CN105058833B - Numerical control hydraulic machine - Google Patents

Abstract

The invention provides a numerically controlled hydraulic machine. An operation screen is provided on the top of the pressure oil source, and an oil outlet is also provided on the top of the pressure oil source. There is an oil return port at the end, the oil return port is connected with one end of the oil return pipe, the other end of the oil return pipe is connected with the CNC oil cylinder, the servo motor is installed at the top of the valve body, and the cylinder body is installed at the lower end of the valve body, and the valve body is connected with the oil pipe in the upper cavity of the oil cylinder. The upper end of the cylinder body is connected, the valve body is connected with the lower end of the cylinder body through the oil pipe in the lower chamber of the oil cylinder, and a pressure head is arranged at the bottom of the numerically controlled oil cylinder, and the numerically controlled oil cylinder is arranged on the mounting frame of the numerically controlled oil cylinder. It solves the synchronization problem of more than two numerical control oil cylinders, the position control accuracy of the pressure head is high, the movement speed of the pressure head can be controlled, there is no positioning device, no complicated valve blocks, valve groups, expensive proportional valves, proportional pumps, etc. , Simplify the hydraulic system and the mechanical structure of the whole machine, thereby improving the reliability of the whole machine.

Description

A CNC hydraulic press

technical field

The invention relates to the technical field, and more specifically, relates to a numerically controlled hydraulic machine.

Background technique

A hydraulic press is a machine that uses liquid as a working medium and is made according to Pascal's principle to transfer energy to realize various processes. A hydraulic press generally consists of three parts: the machine (main machine), the power system and the hydraulic control system. Hydraulic presses are classified into valve hydraulic presses, liquid hydraulic presses, and engineering hydraulic presses.

A hydraulic press is a machine that uses liquid as a working medium to transfer energy to achieve various processes. In addition to being used for forging and forming, hydraulic presses can also be used for straightening, pressing, packing, briquetting and pressing plates, etc. Hydraulic presses include hydraulic presses and oil presses. Those with water-based liquid as the working medium are called hydraulic presses, and those with oil as the working medium are called hydraulic presses. hydraulic press. The specifications of hydraulic presses are generally expressed in terms of nominal working force (kN) or nominal tonnage (tons). Most hydraulic presses for forging are hydraulic presses with high tonnage. In order to reduce the size of the equipment, large-scale forging hydraulic presses usually use higher pressure (about 35 MPa), and sometimes use ultra-high pressure above 100 MPa. Hydraulic presses for other purposes generally use 6-25 MPa working pressure. The tonnage ratio of hydraulic presses Hydraulic machine is low.

The basic principle of the hydraulic machine is that the oil pump sends the hydraulic oil to the integrated cartridge valve block, and distributes the hydraulic oil to the upper or lower chamber of the cylinder through each check valve and relief valve, and the cylinder moves under the action of high-pressure oil. .A hydraulic press is a device that uses liquid to transmit pressure. When the liquid transmits pressure in a closed container, it follows Pascal's law. The hydraulic transmission system of the four-column hydraulic press consists of a power mechanism, a control mechanism, an actuator, an auxiliary mechanism and a working medium. The power mechanism usually uses an oil pump as the power mechanism, which is generally an integral type. oil pump. In order to meet the requirements of the movement speed of the actuator, one oil pump or multiple oil pumps are selected. Gear pump for low pressure (oil pressure less than 2.5MP); vane pump for medium pressure (oil pressure less than 6.3MP); plunger pump for high pressure (oil pressure less than 32.0MP). Pressure processing and forming of various plastic materials, such as extrusion, bending, deep drawing of stainless steel plates and cold forming of metal parts, and can also be used for pressing powder products, grinding wheels, bakelite, and resin thermosetting products.

Contents of the invention

The invention overcomes the deficiencies in the prior art and provides a numerically controlled hydraulic machine.

The purpose of the present invention is achieved through the following technical solutions.

A numerically controlled hydraulic machine, comprising a pressure oil source, an operation screen, a high-pressure oil pipe, an oil return pipe, a numerically controlled oil cylinder, an oil pipe in the upper chamber of the oil cylinder, an oil pipe in the lower chamber of the oil cylinder, a pressure head, and a mounting frame for the numerically controlled oil cylinder. The top of the pressure oil source is provided with the Operation screen, the top of the pressure oil source is also provided with an oil outlet, the oil outlet is connected to one end of the high-pressure oil pipe, the other end of the high-pressure oil pipe is connected to the numerical control oil cylinder, and the bottom end of the pressure oil source is set There is an oil return port, the oil return port is connected to one end of the oil return pipe, and the other end of the oil return pipe is connected to the numerical control oil cylinder, the numerical control oil cylinder includes a servo motor, a valve body and a cylinder body, and the servo motor is set At the top of the valve body, the lower end of the valve body is provided with the cylinder body, the valve body is connected to the upper end of the cylinder body through the oil pipe in the upper chamber of the oil cylinder, and the valve body is connected to the upper end of the cylinder body through the oil pipe in the lower chamber of the oil cylinder. It is connected with the lower end of the cylinder body, the pressure head is arranged at the bottom end of the numerical control oil cylinder, and the numerical control oil cylinder is arranged on the placement frame of the numerical control oil cylinder, and the placement frame of the numerical control oil cylinder includes an upper beam, a column and a lower beam , the upper beam and the lower beam are provided with numerically controlled oil cylinder installation holes, and the upper beam and the lower beam are provided at both ends of the column.

The valve body is provided with a coupling, a valve core screw, a valve core, a valve body screw and a screw coupling, the servo motor is connected to the top end of the coupling, and the bottom end of the coupling passes through The valve core screw is connected to the top of the valve core, and the bottom end of the valve core is connected to the top of the screw coupling through the valve body screw, and the valve core is connected to the valve body screw. There are a first oil outlet, a second oil outlet, an oil inlet and an oil return port, the first oil outlet and the second oil outlet are arranged on the same side of the valve body, the The oil inlet and the oil return port are arranged on the other side of the valve body, the first oil outlet and the second oil outlet are higher than the oil inlet and the oil return port, the A bearing, a piston lead screw, a lead screw nut, a piston, a cylinder mouth flange and a piston rod are arranged in the cylinder body, the bottom end of the lead screw coupling is connected with the top end of the bearing, and the bottom end of the bearing passes through the piston rod. The lead screw and the lead screw nut are connected to the top end of the piston, the bottom end of the piston is arranged on the piston rod, and the cylinder mouth flange is arranged on the bottom end of the cylinder body.

A first oil return pipeline is provided between the piston screw and the cylinder body, and the first oil outlet is connected to the first oil return pipeline through the oil pipe in the upper chamber of the oil cylinder. A second oil return pipeline is provided between the cylinder body, and the second oil outlet is connected to the second oil return pipeline through the oil pipe in the lower chamber of the oil cylinder.

The first oil outlet is connected to the top end of the first oil return line through the oil pipe in the upper chamber of the oil cylinder, and the second oil outlet is connected to the bottom end of the second oil return line through the oil pipe in the lower chamber of the oil cylinder .

The cylinder port flange is arranged below the bottom end of the second oil return pipeline.

The valve body is provided with a coupling, a valve core screw, a valve core, a valve body screw and a screw coupling, the servo motor is connected to the top end of the coupling, and the bottom end of the coupling passes through The valve core screw is connected to the top of the valve core, and the bottom end of the valve core is connected to the top of the screw coupling through the valve body screw, and the valve core is connected to the valve body screw. There are a first oil outlet, a second oil outlet, an oil inlet and an oil return port, the first oil outlet and the second oil outlet are arranged on the same side of the valve body, the The oil inlet and the oil return port are arranged on the other side of the valve body, the first oil outlet and the second oil outlet are higher than the oil inlet and the oil return port, the A bearing, a piston screw, a screw nut, a piston, an elliptical cylinder mouth flange and an elliptical piston rod are arranged in the cylinder body, the bottom end of the screw coupling is connected with the top end of the bearing, and the bottom end of the bearing passes through the The piston lead screw and the lead screw nut are connected to the top of the piston, the bottom end of the piston is arranged on the elliptical piston rod, and the elliptical piston rod adopts a structure with an elliptical cross section. The elliptical cylinder mouth method The flange is arranged at the bottom end of the cylinder body, and an ellipse guide flange is also arranged outside the bottom end of the cylinder body.

A first oil return pipeline is provided between the piston screw and the cylinder body, and the first oil outlet is connected to the first oil return pipeline through the oil pipe in the upper chamber of the oil cylinder. A second oil return pipeline is arranged between the rod and the cylinder, and the second oil outlet is connected to the second oil return pipeline through the oil pipe in the lower chamber of the oil cylinder.

The first oil outlet is connected to the top end of the first oil return line through the oil pipe in the upper chamber of the oil cylinder, and the second oil outlet is connected to the bottom end of the second oil return line through the oil pipe in the lower chamber of the oil cylinder .

The elliptical cylinder mouth flange is arranged below the bottom end of the second oil return pipeline.

The beneficial effects of the present invention are: compared with the prior art, since the servo motor is provided, by setting the relevant parameters of the servo motor, the running speed of the numerically controlled oil cylinder can be set and controlled; the setting of the servo motor also makes the numerically controlled oil cylinder The position control accuracy of the oil cylinder is greatly improved. By setting the servo motor to control the position of the oil cylinder, the position control accuracy of the CNC oil cylinder is greatly improved; the elliptical cylinder port flange, elliptical piston rod and elliptical guide method The setting of blue, so the elliptical piston rod cannot rotate by itself, so the CNC oil cylinder is inherently equipped with strong guiding performance and does not need an external guiding device to guide it, thus saving the external guiding device and cost, and also making the cylinder The structure of the CNC oil cylinder is simpler, and it has the advantages of simple structure, convenient maintenance, low processing cost, and high production efficiency; at the same time, it solves the synchronization problem of more than two CNC oil cylinders, the position control accuracy of the pressure head is high, and the movement speed of the pressure head can be controlled. , There is no fixed stroke device, no complex valve blocks, valve groups, expensive proportional valves, proportional pumps, etc., which simplifies the hydraulic system and the mechanical structure of the whole machine, thereby improving the reliability of the whole machine.

Description of drawings

Fig. 1 is the overall structural representation of the present invention;

Fig. 2 is the structural representation (embodiment 1) of numerical control oil cylinder among the present invention;

Fig. 3 is a schematic diagram of the structure of the digital control oil cylinder in the present invention (embodiment 2).

In the figure: 01 is the pressure oil source, 02 is the operation screen, 03 is the high pressure oil pipe, 04 is the oil return pipe, 05 is the CNC oil cylinder, 06 is the oil pipe in the upper chamber of the oil cylinder, 07 is the oil pipe in the lower chamber of the oil cylinder, 08 is the upper beam, and 09 is Pressure head, 10 is the column, 11 is the lower beam, 12 is the servo motor, 13 is the coupling, 14 is the valve core screw, 15 is the valve core, 16 is the valve body, 17 is the valve body screw, 18 is the screw The rod coupling, 19 is the bearing, 20 is the piston screw, 21 is the screw nut, 22 is the piston, 23 is the cylinder mouth flange, 24 is the cylinder body, 25 is the piston rod, 26 is the oval cylinder mouth flange, 27 is an oval piston rod, 28 is an oval guide flange, A is the first oil outlet, B is the second oil outlet, P is the oil inlet, and T is the oil return port.

detailed description

The technical solutions of the present invention will be further described below through specific examples.

As shown in Figure 1 to Figure 3, 01 is the pressure oil source, 02 is the operation screen, 03 is the high pressure oil pipe, 04 is the oil return pipe, 05 is the CNC oil cylinder, 06 is the oil pipe in the upper chamber of the oil cylinder, and 07 is the oil pipe in the lower chamber of the oil cylinder , 08 is the upper beam, 09 is the pressure head, 10 is the column, 11 is the lower beam, 12 is the servo motor, 13 is the coupling, 14 is the valve core screw, 15 is the valve core, 16 is the valve body, 17 is Valve body screw, 18 is the screw coupling, 19 is the bearing, 20 is the piston screw, 21 is the screw nut, 22 is the piston, 23 is the cylinder mouth flange, 24 is the cylinder body, 25 is the piston rod, 26 is an elliptical cylinder mouth flange, 27 is an elliptical piston rod, 28 is an elliptical guide flange, A is the first oil outlet, B is the second oil outlet, P is the oil inlet, and T is the oil return port.

Example 1

A numerically controlled hydraulic machine, including a pressure oil source 01, an operation screen 02, a high pressure oil pipe 03, an oil return pipe 04, a numerically controlled oil cylinder 05, an oil pipe in the upper chamber of the oil cylinder 06, an oil pipe in the lower chamber of the oil cylinder 07, a pressure head 09, and a mounting frame for the numerically controlled oil cylinder. The top of the source 01 is provided with an operation screen 02, and the top of the pressure oil source 01 is also provided with an oil outlet. The oil return port is connected to one end of the oil return pipe 04, and the other end of the oil return pipe 04 is connected to the numerical control oil cylinder 05. The numerical control oil cylinder 05 includes a servo motor 12, a valve body 16 and a cylinder body 24, and the servo motor 12 is set on the top of the valve body 16 , the lower end of the valve body 16 is provided with a cylinder body 24, the valve body 16 is connected to the upper end of the cylinder body 24 through the oil pipe 06 in the upper chamber of the oil cylinder, the valve body 16 is connected to the lower end of the cylinder body 24 through the oil pipe 07 in the lower chamber of the oil cylinder, and the bottom end of the numerical control oil cylinder 05 The pressure head 09 is set, and the CNC oil cylinder 05 is set on the CNC oil cylinder installation frame. The CNC oil cylinder installation frame includes an upper beam 08, a column 10 and a lower beam 11, and the upper beam 08 and the lower beam 11 are provided with CNC oil cylinder installation holes. An upper beam 08 and a lower beam 11 are arranged at both ends of the 10.

The valve body 16 is provided with a coupling 13, a valve core screw 14, a valve core 15, a valve body screw 17 and a screw coupling 18, the servo motor 12 is connected to the top of the coupling 13, and the bottom of the coupling 13 The end is connected with the top of the valve core 15 through the valve core screw 14, the bottom end of the valve core 15 is connected with the top of the screw coupling 18 through the valve body screw 17, and a second valve is arranged between the valve core 15 and the valve body screw 17 An oil outlet A, a second oil outlet B, an oil inlet P and an oil return port T, the first oil outlet A and the second oil outlet B are arranged on the same side of the valve body 16, the oil inlet P and the oil return port The oil port T is set on the other side of the valve body 16, the first oil outlet A and the second oil outlet B are higher than the oil inlet P and the oil return port T, and the cylinder body 24 is provided with a bearing 19 and a piston screw 20 , lead screw nut 21, piston 22, cylinder mouth flange 23 and piston rod 25, the bottom end of lead screw coupling 18 is connected with the top end of bearing 19, and the bottom end of bearing 19 is connected to piston 22 through piston lead screw 20 and lead screw nut 21 The tops are connected, the bottom end of the piston 22 is arranged on the piston rod 25, and the cylinder mouth flange 23 is arranged on the bottom end of the cylinder body 24.

A first oil return pipeline is set between the piston screw 20 and the cylinder body 24, the first oil outlet A is connected to the first oil return pipeline through the oil pipe 06 in the upper chamber of the oil cylinder, and is set between the piston rod 25 and the cylinder body 24 There is a second oil return pipeline, and the second oil outlet B is connected to the second oil return pipeline through the oil pipe 07 in the lower cavity of the oil cylinder.

The first oil outlet A is connected to the top of the first oil return pipeline through the oil pipe 06 in the upper chamber of the oil cylinder, and the second oil outlet B is connected to the bottom end of the second oil return pipeline through the oil pipe 07 in the lower chamber of the oil cylinder.

The cylinder port flange 23 is arranged below the bottom end of the second oil return pipeline.

Working process: When the servo motor 12 receives the command, it drives the spool screw 14 to rotate through the coupling 13 and pushes the spool 15 to move. Assuming the spool 15 moves upward, the hydraulic pressure oil passes through the oil inlet P through the first The oil outlet A enters the upper chamber of the cylinder body 24, and the oil in the lower chamber of the cylinder body 24 flows back to the oil return port T through the second oil outlet B of the spool 15, and the piston 22 pushes the piston rod 25 to move downward. , when the piston 22 moves down, the lead screw nut 21 also moves downward, the movement of the lead screw nut 21 forces the piston lead screw 20 to rotate, and the rotation of the piston lead screw 20 is driven by the lead screw coupling 18 to drive the valve body The lead screw 17 rotates, and the valve body 16 also moves downward under the action of the valve body lead screw 17, and then the first oil outlet A, the second oil outlet B, the oil inlet P and the oil return port are closed respectively. The oil circuit of T makes the piston rod 25 move down to the position required by the command and stops; when the command sent to the servo motor 12 is a reverse signal, the piston rod 25 moves up to the position required by the command. above the position and stopped.

Compared with the prior art, since the servo motor is provided, the operating speed of the numerical control oil cylinder can be set and controlled by setting the relevant parameters of the servo motor; the setting of the servo motor also makes the position control accuracy of the numerical control oil cylinder greatly improved Improvement, by setting the servo motor to control the position of the oil cylinder, the position control accuracy of the numerical control oil cylinder is greatly improved; at the same time, the synchronization problem of two or more numerical control oil cylinders is solved, and the position control accuracy of the pressure head is high. The movement speed of the head can be controlled, there is no positioning device, no complex valve blocks, valve groups, expensive proportional valves, proportional pumps, etc., which simplifies the hydraulic system and the mechanical structure of the whole machine, thereby improving the reliability of the whole machine .

Example 2

A numerically controlled hydraulic machine, including a pressure oil source 01, an operation screen 02, a high pressure oil pipe 03, an oil return pipe 04, a numerically controlled oil cylinder 05, an oil pipe in the upper chamber of the oil cylinder 06, an oil pipe in the lower chamber of the oil cylinder 07, a pressure head 09, and a mounting frame for the numerically controlled oil cylinder. The top of the source 01 is provided with an operation screen 02, and the top of the pressure oil source 01 is also provided with an oil outlet. The oil return port is connected to one end of the oil return pipe 04, and the other end of the oil return pipe 04 is connected to the numerical control oil cylinder 05. The numerical control oil cylinder 05 includes a servo motor 12, a valve body 16 and a cylinder body 24, and the servo motor 12 is set on the top of the valve body 16 , the lower end of the valve body 16 is provided with a cylinder body 24, the valve body 16 is connected to the upper end of the cylinder body 24 through the oil pipe 06 in the upper chamber of the oil cylinder, the valve body 16 is connected to the lower end of the cylinder body 24 through the oil pipe 07 in the lower chamber of the oil cylinder, and the bottom end of the numerical control oil cylinder 05 The pressure head 09 is set, and the CNC oil cylinder 05 is set on the CNC oil cylinder installation frame. The CNC oil cylinder installation frame includes an upper beam 08, a column 10 and a lower beam 11, and the upper beam 08 and the lower beam 11 are provided with CNC oil cylinder installation holes. An upper beam 08 and a lower beam 11 are arranged at both ends of the 10.

The valve body 16 is provided with a coupling 13, a valve core screw 14, a valve core 15, a valve body screw 17 and a screw coupling 18, the servo motor 12 is connected to the top of the coupling 13, and the bottom of the coupling 13 The end is connected with the top of the valve core 15 through the valve core screw 14, the bottom end of the valve core 15 is connected with the top of the screw coupling 18 through the valve body screw 17, and a second valve is arranged between the valve core 15 and the valve body screw 17. An oil outlet A, a second oil outlet B, an oil inlet P and an oil return port T, the first oil outlet A and the second oil outlet B are arranged on the same side of the valve body 16, the oil inlet P and the oil return port The oil port T is set on the other side of the valve body 16, the first oil outlet A and the second oil outlet B are higher than the oil inlet P and the oil return port T, and the cylinder body 24 is provided with a bearing 19 and a piston screw 20 , screw nut 21, piston 22, oval cylinder port flange 26 and oval piston rod 27, the bottom end of screw coupling 18 is connected with the top end of bearing 19, and the bottom end of bearing 19 is connected with piston screw 20 and screw nut 21 The tops of the piston 22 are connected, the bottom end of the piston 22 is arranged on the elliptical piston rod 27, the elliptical piston rod 27 adopts an elliptical structure in cross section, and the elliptical cylinder mouth flange 26 is arranged on the bottom end of the cylinder body 24, outside the bottom end of the cylinder body 24 An elliptical guide flange 28 is also provided.

A first oil return pipeline is set between the piston screw 20 and the cylinder body 24, the first oil outlet A is connected to the first oil return pipeline through the oil pipe 06 in the upper chamber of the oil cylinder, and between the oval piston rod 27 and the cylinder body 24 A second oil return pipeline is provided, and the second oil outlet B is connected to the second oil return pipeline through the oil pipe 07 in the lower chamber of the oil cylinder.

The first oil outlet A is connected to the top of the first oil return pipeline through the oil pipe 06 in the upper chamber of the oil cylinder, and the second oil outlet B is connected to the bottom end of the second oil return pipeline through the oil pipe 07 in the lower chamber of the oil cylinder.

The oval cylinder mouth flange 26 is arranged below the bottom end of the second oil return pipeline.

Working process: When the servo motor 12 receives the command, it drives the spool screw 14 to rotate through the coupling 13 and pushes the spool 15 to move. Assuming the spool 15 moves upward, the hydraulic pressure oil passes through the oil inlet P through the first The oil outlet A enters the upper chamber of the cylinder body 24, and the oil in the lower chamber of the cylinder body 24 flows back into the oil return port T through the second oil outlet B of the spool 15, and the piston 22 pushes the elliptical piston rod 27 downward. When the piston 22 moves downward, the screw nut 21 also moves downward. The movement of the screw nut 21 forces the piston screw 20 to rotate, and the rotation of the piston screw 20 is driven by the screw coupling 18 to drive the valve. The body screw 17 rotates, and the valve body 16 also moves downward under the action of the valve body screw 17, and then the first oil outlet A, the second oil outlet B, the oil inlet P and the oil return port are closed respectively. The oil passage of port T makes the elliptical piston rod 27 move downward to the position required by the instruction and stops; when the instruction sent to the servo motor 12 is a reverse signal, the elliptical piston rod 27 moves upward to the It stops above the position required by the instruction; because of the existence of the elliptical cylinder mouth flange 26, elliptical piston rod 27 and elliptical guide flange 28, the elliptical piston rod 27 cannot rotate automatically, so the CNC elliptical oil cylinder is inherently equipped with It has strong guiding performance and does not require external guiding devices.

Compared with the prior art, since the servo motor is provided, the operating speed of the numerical control oil cylinder can be set and controlled by setting the relevant parameters of the servo motor; the setting of the servo motor also makes the position control accuracy of the numerical control oil cylinder greatly improved Improvement, through the setting of the servo motor, the position of the oil cylinder is controlled, so the position control accuracy of the CNC oil cylinder is greatly improved; the setting of the elliptical cylinder port flange, elliptical piston rod and elliptical guide flange, so the elliptical piston The rod cannot rotate on its own, so the CNC oil cylinder has a strong guiding performance and does not need an external guide device to guide it, thus saving the external guide device, saving costs, and making the structure of the CNC oil cylinder simpler , has the advantages of simple structure, convenient maintenance, low processing cost and high production efficiency; at the same time, it solves the synchronization problem of more than two numerical control oil cylinders, the position control accuracy of the pressure head is high, the movement speed of the pressure head can be controlled, and there is no positioning device. There are no complicated valve blocks, valve groups, expensive proportional valves, proportional pumps, etc., which simplifies the hydraulic system and the mechanical structure of the whole machine, thereby improving the reliability of the whole machine.

Example 3

A numerically controlled hydraulic machine, including a pressure oil source 01, an operation screen 02, a high pressure oil pipe 03, an oil return pipe 04, a numerically controlled oil cylinder 05, an oil pipe in the upper chamber of the oil cylinder 06, an oil pipe in the lower chamber of the oil cylinder 07, a pressure head 09, and a mounting frame for the numerically controlled oil cylinder. The top of the source 01 is provided with an operation screen 02, and the top of the pressure oil source 01 is also provided with an oil outlet. The oil return port is connected to one end of the oil return pipe 04, and the other end of the oil return pipe 04 is connected to the numerical control oil cylinder 05. The numerical control oil cylinder 05 includes a servo motor 12, a valve body 16 and a cylinder body 24, and the servo motor 12 is set on the top of the valve body 16 , the lower end of the valve body 16 is provided with a cylinder body 24, the valve body 16 is connected to the upper end of the cylinder body 24 through the oil pipe 06 in the upper chamber of the oil cylinder, the valve body 16 is connected to the lower end of the cylinder body 24 through the oil pipe 07 in the lower chamber of the oil cylinder, and the bottom end of the numerical control oil cylinder 05 The pressure head 09 is set, and the CNC oil cylinder 05 is set on the CNC oil cylinder installation frame. The CNC oil cylinder installation frame includes an upper beam 08, a column 10 and a lower beam 11, and the upper beam 08 and the lower beam 11 are provided with CNC oil cylinder installation holes. An upper beam 08 and a lower beam 11 are arranged at both ends of the 10.

The valve body 16 is provided with a coupling 13, a valve core screw 14, a valve core 15, a valve body screw 17 and a screw coupling 18, the servo motor 12 is connected to the top of the coupling 13, and the bottom of the coupling 13 The end is connected with the top of the valve core 15 through the valve core screw 14, the bottom end of the valve core 15 is connected with the top of the screw coupling 18 through the valve body screw 17, and a second valve is arranged between the valve core 15 and the valve body screw 17 An oil outlet A, a second oil outlet B, an oil inlet P and an oil return port T, the first oil outlet A and the second oil outlet B are arranged on the same side of the valve body 16, the oil inlet P and the oil return port The oil port T is set on the other side of the valve body 16, the first oil outlet A and the second oil outlet B are higher than the oil inlet P and the oil return port T, and the cylinder body 24 is provided with a bearing 19 and a piston screw 20 , lead screw nut 21, piston 22, cylinder mouth flange 23 and piston rod 25, the bottom end of lead screw coupling 18 is connected with the top end of bearing 19, and the bottom end of bearing 19 is connected to piston 22 through piston lead screw 20 and lead screw nut 21 The tops are connected, the bottom end of the piston 22 is arranged on the piston rod 25, and the cylinder mouth flange 23 is arranged on the bottom end of the cylinder body 24.

Example 4

A numerically controlled hydraulic machine, including a pressure oil source 01, an operation screen 02, a high pressure oil pipe 03, an oil return pipe 04, a numerically controlled oil cylinder 05, an oil pipe in the upper chamber of the oil cylinder 06, an oil pipe in the lower chamber of the oil cylinder 07, a pressure head 09, and a mounting frame for the numerically controlled oil cylinder. The top of the source 01 is provided with an operation screen 02, and the top of the pressure oil source 01 is also provided with an oil outlet. The oil return port is connected to one end of the oil return pipe 04, and the other end of the oil return pipe 04 is connected to the numerical control oil cylinder 05. The numerical control oil cylinder 05 includes a servo motor 12, a valve body 16 and a cylinder body 24, and the servo motor 12 is set on the top of the valve body 16 , the lower end of the valve body 16 is provided with a cylinder body 24, the valve body 16 is connected to the upper end of the cylinder body 24 through the oil pipe 06 in the upper chamber of the oil cylinder, the valve body 16 is connected to the lower end of the cylinder body 24 through the oil pipe 07 in the lower chamber of the oil cylinder, and the bottom end of the numerical control oil cylinder 05 The pressure head 09 is set, and the CNC oil cylinder 05 is set on the CNC oil cylinder installation frame. The CNC oil cylinder installation frame includes an upper beam 08, a column 10 and a lower beam 11, and the upper beam 08 and the lower beam 11 are provided with CNC oil cylinder installation holes. An upper beam 08 and a lower beam 11 are arranged at both ends of the 10.

The valve body 16 is provided with a coupling 13, a valve core screw 14, a valve core 15, a valve body screw 17 and a screw coupling 18, the servo motor 12 is connected to the top of the coupling 13, and the bottom of the coupling 13 The end is connected with the top of the valve core 15 through the valve core screw 14, the bottom end of the valve core 15 is connected with the top of the screw coupling 18 through the valve body screw 17, and a second valve is arranged between the valve core 15 and the valve body screw 17 An oil outlet A, a second oil outlet B, an oil inlet P and an oil return port T, the first oil outlet A and the second oil outlet B are arranged on the same side of the valve body 16, the oil inlet P and the oil return port The oil port T is set on the other side of the valve body 16, the first oil outlet A and the second oil outlet B are higher than the oil inlet P and the oil return port T, and the cylinder body 24 is provided with a bearing 19 and a piston screw 20 , screw nut 21, piston 22, oval cylinder port flange 26 and oval piston rod 27, the bottom end of screw coupling 18 is connected with the top end of bearing 19, and the bottom end of bearing 19 is connected with piston screw 20 and screw nut 21 The tops of the piston 22 are connected, the bottom end of the piston 22 is arranged on the elliptical piston rod 27, the elliptical piston rod 27 adopts an elliptical structure in cross section, and the elliptical cylinder mouth flange 26 is arranged on the bottom end of the cylinder body 24, outside the bottom end of the cylinder body 24 An elliptical guide flange 28 is also provided.

Example 5

A numerically controlled hydraulic machine, including a pressure oil source 01, an operation screen 02, a high pressure oil pipe 03, an oil return pipe 04, a numerically controlled oil cylinder 05, an oil pipe in the upper chamber of the oil cylinder 06, an oil pipe in the lower chamber of the oil cylinder 07, a pressure head 09, and a mounting frame for the numerically controlled oil cylinder. The top of the source 01 is provided with an operation screen 02, and the top of the pressure oil source 01 is also provided with an oil outlet. The oil return port is connected to one end of the oil return pipe 04, and the other end of the oil return pipe 04 is connected to the numerical control oil cylinder 05. The numerical control oil cylinder 05 includes a servo motor 12, a valve body 16 and a cylinder body 24, and the servo motor 12 is set on the top of the valve body 16 , the lower end of the valve body 16 is provided with a cylinder body 24, the valve body 16 is connected to the upper end of the cylinder body 24 through the oil pipe 06 in the upper chamber of the oil cylinder, the valve body 16 is connected to the lower end of the cylinder body 24 through the oil pipe 07 in the lower chamber of the oil cylinder, and the bottom end of the numerical control oil cylinder 05 The pressure head 09 is set, and the CNC oil cylinder 05 is set on the CNC oil cylinder installation frame. The CNC oil cylinder installation frame includes an upper beam 08, a column 10 and a lower beam 11, and the upper beam 08 and the lower beam 11 are provided with CNC oil cylinder installation holes. An upper beam 08 and a lower beam 11 are arranged at both ends of the 10.

The valve body 16 is provided with a coupling 13, a valve core screw 14, a valve core 15, a valve body screw 17 and a screw coupling 18, the servo motor 12 is connected to the top of the coupling 13, and the bottom of the coupling 13 The end is connected with the top of the valve core 15 through the valve core screw 14, the bottom end of the valve core 15 is connected with the top of the screw coupling 18 through the valve body screw 17, and a second valve is arranged between the valve core 15 and the valve body screw 17 An oil outlet A, a second oil outlet B, an oil inlet P and an oil return port T, the first oil outlet A and the second oil outlet B are arranged on the same side of the valve body 16, the oil inlet P and the oil return port The oil port T is set on the other side of the valve body 16, the first oil outlet A and the second oil outlet B are higher than the oil inlet P and the oil return port T, and the cylinder body 24 is provided with a bearing 19 and a piston screw 20 , lead screw nut 21, piston 22, cylinder mouth flange 23 and piston rod 25, the bottom end of lead screw coupling 18 is connected with the top end of bearing 19, and the bottom end of bearing 19 is connected to piston 22 through piston lead screw 20 and lead screw nut 21 The tops are connected, the bottom end of the piston 22 is arranged on the piston rod 25, and the cylinder mouth flange 23 is arranged on the bottom end of the cylinder body 24.

A first oil return pipeline is set between the piston screw 20 and the cylinder body 24, the first oil outlet A is connected to the first oil return pipeline through the oil pipe 06 in the upper chamber of the oil cylinder, and is set between the piston rod 25 and the cylinder body 24 There is a second oil return pipeline, and the second oil outlet B is connected to the second oil return pipeline through the oil pipe 07 in the lower chamber of the oil cylinder.

Example 6

A numerically controlled hydraulic machine, including a pressure oil source 01, an operation screen 02, a high pressure oil pipe 03, an oil return pipe 04, a numerically controlled oil cylinder 05, an oil pipe in the upper chamber of the oil cylinder 06, an oil pipe in the lower chamber of the oil cylinder 07, a pressure head 09, and a mounting frame for the numerically controlled oil cylinder. The top of the source 01 is provided with an operation screen 02, and the top of the pressure oil source 01 is also provided with an oil outlet. The oil return port is connected to one end of the oil return pipe 04, and the other end of the oil return pipe 04 is connected to the numerical control oil cylinder 05. The numerical control oil cylinder 05 includes a servo motor 12, a valve body 16 and a cylinder body 24, and the servo motor 12 is set on the top of the valve body 16 , the lower end of the valve body 16 is provided with a cylinder body 24, the valve body 16 is connected to the upper end of the cylinder body 24 through the oil pipe 06 in the upper chamber of the oil cylinder, the valve body 16 is connected to the lower end of the cylinder body 24 through the oil pipe 07 in the lower chamber of the oil cylinder, and the bottom end of the numerical control oil cylinder 05 The pressure head 09 is set, and the CNC oil cylinder 05 is set on the CNC oil cylinder installation frame. The CNC oil cylinder installation frame includes an upper beam 08, a column 10 and a lower beam 11, and the upper beam 08 and the lower beam 11 are provided with CNC oil cylinder installation holes. An upper beam 08 and a lower beam 11 are arranged at both ends of the 10.

The valve body 16 is provided with a coupling 13, a valve core screw 14, a valve core 15, a valve body screw 17 and a screw coupling 18, the servo motor 12 is connected to the top of the coupling 13, and the bottom of the coupling 13 The end is connected with the top of the valve core 15 through the valve core screw 14, the bottom end of the valve core 15 is connected with the top of the screw coupling 18 through the valve body screw 17, and a second valve is arranged between the valve core 15 and the valve body screw 17 An oil outlet A, a second oil outlet B, an oil inlet P and an oil return port T, the first oil outlet A and the second oil outlet B are arranged on the same side of the valve body 16, the oil inlet P and the oil return port The oil port T is set on the other side of the valve body 16, the first oil outlet A and the second oil outlet B are higher than the oil inlet P and the oil return port T, and the cylinder body 24 is provided with a bearing 19 and a piston screw 20 , screw nut 21, piston 22, oval cylinder port flange 26 and oval piston rod 27, the bottom end of screw coupling 18 is connected with the top end of bearing 19, and the bottom end of bearing 19 is connected with piston screw 20 and screw nut 21 The tops of the piston 22 are connected, the bottom end of the piston 22 is arranged on the elliptical piston rod 27, the elliptical piston rod 27 adopts an elliptical structure in cross section, and the elliptical cylinder mouth flange 26 is arranged on the bottom end of the cylinder body 24, outside the bottom end of the cylinder body 24 An elliptical guide flange 28 is also provided.

A first oil return pipeline is set between the piston screw 20 and the cylinder body 24, the first oil outlet A is connected to the first oil return pipeline through the oil pipe 06 in the upper chamber of the oil cylinder, and between the oval piston rod 27 and the cylinder body 24 A second oil return pipeline is provided, and the second oil outlet B is connected to the second oil return pipeline through the oil pipe 07 in the lower cavity of the oil cylinder.

Example 7

A numerically controlled hydraulic machine, including a pressure oil source 01, an operation screen 02, a high pressure oil pipe 03, an oil return pipe 04, a numerically controlled oil cylinder 05, an oil pipe in the upper chamber of the oil cylinder 06, an oil pipe in the lower chamber of the oil cylinder 07, a pressure head 09, and a mounting frame for the numerically controlled oil cylinder. The top of the source 01 is provided with an operation screen 02, and the top of the pressure oil source 01 is also provided with an oil outlet. The oil return port is connected to one end of the oil return pipe 04, and the other end of the oil return pipe 04 is connected to the numerical control oil cylinder 05. The numerical control oil cylinder 05 includes a servo motor 12, a valve body 16 and a cylinder body 24, and the servo motor 12 is set on the top of the valve body 16 , the lower end of the valve body 16 is provided with a cylinder body 24, the valve body 16 is connected to the upper end of the cylinder body 24 through the oil pipe 06 in the upper chamber of the oil cylinder, the valve body 16 is connected to the lower end of the cylinder body 24 through the oil pipe 07 in the lower chamber of the oil cylinder, and the bottom end of the numerical control oil cylinder 05 The pressure head 09 is set, and the CNC oil cylinder 05 is set on the CNC oil cylinder installation frame. The CNC oil cylinder installation frame includes an upper beam 08, a column 10 and a lower beam 11, and the upper beam 08 and the lower beam 11 are provided with CNC oil cylinder installation holes. An upper beam 08 and a lower beam 11 are arranged at both ends of the 10.

The valve body 16 is provided with a coupling 13, a valve core screw 14, a valve core 15, a valve body screw 17 and a screw coupling 18, the servo motor 12 is connected to the top of the coupling 13, and the bottom of the coupling 13 The end is connected with the top of the valve core 15 through the valve core screw 14, the bottom end of the valve core 15 is connected with the top of the screw coupling 18 through the valve body screw 17, and a second valve is arranged between the valve core 15 and the valve body screw 17 An oil outlet A, a second oil outlet B, an oil inlet P and an oil return port T, the first oil outlet A and the second oil outlet B are arranged on the same side of the valve body 16, the oil inlet P and the oil return port The oil port T is set on the other side of the valve body 16, the first oil outlet A and the second oil outlet B are higher than the oil inlet P and the oil return port T, and the cylinder body 24 is provided with a bearing 19 and a piston screw 20 , lead screw nut 21, piston 22, cylinder mouth flange 23 and piston rod 25, the bottom end of lead screw coupling 18 is connected with the top end of bearing 19, and the bottom end of bearing 19 is connected to piston 22 through piston lead screw 20 and lead screw nut 21 The tops are connected, the bottom end of the piston 22 is arranged on the piston rod 25, and the cylinder mouth flange 23 is arranged on the bottom end of the cylinder body 24.

A first oil return pipeline is set between the piston screw 20 and the cylinder body 24, the first oil outlet A is connected to the first oil return pipeline through the oil pipe 06 in the upper chamber of the oil cylinder, and is set between the piston rod 25 and the cylinder body 24 There is a second oil return pipeline, and the second oil outlet B is connected to the second oil return pipeline through the oil pipe 07 in the lower chamber of the oil cylinder.

The first oil outlet A is connected to the top of the first oil return pipeline through the oil pipe 06 in the upper chamber of the oil cylinder, and the second oil outlet B is connected to the bottom end of the second oil return pipeline through the oil pipe 07 in the lower chamber of the oil cylinder.

Example 8

A numerically controlled hydraulic machine, including a pressure oil source 01, an operation screen 02, a high pressure oil pipe 03, an oil return pipe 04, a numerically controlled oil cylinder 05, an oil pipe in the upper chamber of the oil cylinder 06, an oil pipe in the lower chamber of the oil cylinder 07, a pressure head 09, and a mounting frame for the numerically controlled oil cylinder. The top of the source 01 is provided with an operation screen 02, and the top of the pressure oil source 01 is also provided with an oil outlet. The oil return port is connected to one end of the oil return pipe 04, and the other end of the oil return pipe 04 is connected to the numerical control oil cylinder 05. The numerical control oil cylinder 05 includes a servo motor 12, a valve body 16 and a cylinder body 24, and the servo motor 12 is set on the top of the valve body 16 , the lower end of the valve body 16 is provided with a cylinder body 24, the valve body 16 is connected to the upper end of the cylinder body 24 through the oil pipe 06 in the upper chamber of the oil cylinder, the valve body 16 is connected to the lower end of the cylinder body 24 through the oil pipe 07 in the lower chamber of the oil cylinder, and the bottom end of the numerical control oil cylinder 05 The pressure head 09 is set, and the CNC oil cylinder 05 is set on the CNC oil cylinder installation frame. The CNC oil cylinder installation frame includes an upper beam 08, a column 10 and a lower beam 11, and the upper beam 08 and the lower beam 11 are provided with CNC oil cylinder installation holes. An upper beam 08 and a lower beam 11 are arranged at both ends of the 10.

The valve body 16 is provided with a coupling 13, a valve core screw 14, a valve core 15, a valve body screw 17 and a screw coupling 18, the servo motor 12 is connected to the top of the coupling 13, and the bottom of the coupling 13 The end is connected with the top of the valve core 15 through the valve core screw 14, the bottom end of the valve core 15 is connected with the top of the screw coupling 18 through the valve body screw 17, and a second valve is arranged between the valve core 15 and the valve body screw 17 An oil outlet A, a second oil outlet B, an oil inlet P and an oil return port T, the first oil outlet A and the second oil outlet B are arranged on the same side of the valve body 16, the oil inlet P and the oil return port The oil port T is set on the other side of the valve body 16, the first oil outlet A and the second oil outlet B are higher than the oil inlet P and the oil return port T, and the cylinder body 24 is provided with a bearing 19 and a piston screw 20 , screw nut 21, piston 22, oval cylinder port flange 26 and oval piston rod 27, the bottom end of screw coupling 18 is connected with the top end of bearing 19, and the bottom end of bearing 19 is connected with piston screw 20 and screw nut 21 The tops of the piston 22 are connected, the bottom end of the piston 22 is arranged on the elliptical piston rod 27, the elliptical piston rod 27 adopts an elliptical structure in cross section, and the elliptical cylinder mouth flange 26 is arranged on the bottom end of the cylinder body 24, outside the bottom end of the cylinder body 24 An elliptical guide flange 28 is also provided.

A first oil return pipeline is set between the piston screw 20 and the cylinder body 24, the first oil outlet A is connected to the first oil return pipeline through the oil pipe 06 in the upper chamber of the oil cylinder, and between the oval piston rod 27 and the cylinder body 24 A second oil return pipeline is provided, and the second oil outlet B is connected to the second oil return pipeline through the oil pipe 07 in the lower cavity of the oil cylinder.

The first oil outlet A is connected to the top of the first oil return pipeline through the oil pipe 06 in the upper chamber of the oil cylinder, and the second oil outlet B is connected to the bottom end of the second oil return pipeline through the oil pipe 07 in the lower chamber of the oil cylinder.

The present invention has been described in detail above, but the content described is only a preferred embodiment of the present invention, and cannot be considered as limiting the implementation scope of the present invention. All equivalent changes and improvements made according to the application scope of the present invention shall still belong to the scope covered by the patent of the present invention.

Claims (9)

1. A digitally controlled hydraulic press, characterized in that: comprising a pressure oil source, an operation screen, a high-pressure oil pipe, an oil return pipe, a numerically controlled oil cylinder, an oil cylinder upper chamber oil pipe, an oil cylinder lower chamber oil pipe, a pressure head and a numerically controlled oil cylinder placement frame, the pressure oil The top of the source is provided with the operation screen, and the top of the pressure oil source is also provided with an oil outlet, the oil outlet is connected to one end of the high-pressure oil pipe, and the other end of the high-pressure oil pipe is connected to the numerically controlled oil cylinder. The bottom end of the pressure oil source is provided with an oil return port, the oil return port is connected to one end of the oil return pipe, and the other end of the oil return pipe is connected to the numerical control oil cylinder, which includes a servo motor, a valve body and a cylinder body , the servo motor is arranged at the top of the valve body, the cylinder body is arranged at the bottom end of the valve body, the valve body is connected to the upper end of the cylinder body through the oil pipe in the upper cavity of the oil cylinder, and the valve body is connected to the upper end of the cylinder body through the The oil pipe in the lower chamber of the oil cylinder is connected to the lower end of the cylinder body, the pressure head is arranged at the bottom end of the numerically controlled oil cylinder, and the numerically controlled oil cylinder is arranged on the mounting frame of the numerically controlled oil cylinder, and the mounting frame of the numerically controlled oil cylinder includes an upper Beams, columns and lower beams, the upper beams and the lower beams are provided with numerically controlled oil cylinder placement holes, and the upper beams and the lower beams are provided at both ends of the columns. 2. A numerical control hydraulic machine according to claim 1, characterized in that: the valve body is provided with a shaft coupling, a valve core screw, a valve core, a valve body screw and a screw coupling, and the servo The motor is connected to the top end of the coupling, the bottom end of the coupling is connected to the top end of the valve core through the valve core screw, and the bottom end of the valve core is connected to the screw through the valve body screw. The top of the coupling is connected, and a first oil outlet, a second oil outlet, an oil inlet and an oil return port are arranged between the valve core and the valve body screw, the first oil outlet and the The second oil outlet is arranged on the same side of the valve body, the oil inlet and the oil return port are arranged on the other side of the valve body, the first oil outlet and the second outlet The oil port is higher than the oil inlet and the oil return port, and the cylinder is provided with a bearing, a piston screw, a screw nut, a piston, a cylinder mouth flange and a piston rod, and the screw coupling The bottom end is connected with the top end of the bearing, the bottom end of the bearing is connected with the top end of the piston through the piston screw and the screw nut, the bottom end of the piston is arranged on the piston rod, and the cylinder port method The blue is arranged at the bottom of the cylinder. 3. A numerically controlled hydraulic machine according to claim 2, characterized in that: a first oil return line is provided between the piston screw and the cylinder body, and the first oil outlet passes through the oil cylinder The oil pipe in the upper cavity is connected with the first oil return pipeline, and a second oil return pipeline is arranged between the piston rod and the cylinder body, and the second oil outlet passes through the oil pipe in the lower cavity of the oil cylinder and the The second oil return line is connected. 4. A digitally controlled hydraulic machine according to claim 3, characterized in that: the first oil outlet is connected to the top of the first oil return line through the oil pipe in the upper cavity of the oil cylinder, and the second oil outlet The oil pipe in the lower chamber of the oil cylinder is connected to the bottom end of the second oil return pipeline. 5. A numerically controlled hydraulic machine according to claim 3, wherein the cylinder mouth flange is arranged below the bottom end of the second oil return pipeline. 6. A numerical control hydraulic machine according to claim 1, characterized in that: the valve body is provided with a shaft coupling, a valve core screw, a valve core, a valve body screw and a screw coupling, and the servo The motor is connected to the top end of the coupling, the bottom end of the coupling is connected to the top end of the valve core through the valve core screw, and the bottom end of the valve core is connected to the screw through the valve body screw. The top of the coupling is connected, and a first oil outlet, a second oil outlet, an oil inlet and an oil return port are arranged between the valve core and the valve body screw, the first oil outlet and the The second oil outlet is arranged on the same side of the valve body, the oil inlet and the oil return port are arranged on the other side of the valve body, the first oil outlet and the second outlet The oil port is higher than the oil inlet and the oil return port, and the cylinder is provided with a bearing, a piston screw, a screw nut, a piston, an elliptical cylinder port flange and an elliptical piston rod. The bottom end of the shaft device is connected with the top end of the bearing, the bottom end of the bearing is connected with the top end of the piston through the piston screw and the screw nut, the bottom end of the piston is arranged on the elliptical piston rod, and the The elliptical piston rod has an elliptical cross section, the elliptical cylinder mouth flange is arranged at the bottom of the cylinder body, and an elliptical guide flange is arranged outside the bottom end of the cylinder body. 7. A numerically controlled hydraulic machine according to claim 6, characterized in that: a first oil return line is provided between the piston screw and the cylinder body, and the first oil outlet passes through the oil cylinder The oil pipe in the upper cavity is connected to the first oil return pipeline, and a second oil return pipeline is arranged between the oval piston rod and the cylinder body, and the second oil outlet passes through the oil pipe in the lower cavity of the oil cylinder and the oil return pipeline. The second oil return pipeline is connected. 8. A numerically controlled hydraulic machine according to claim 7, characterized in that: the first oil outlet is connected to the top of the first oil return line through the oil pipe in the upper chamber of the oil cylinder, and the second oil outlet The oil pipe in the lower chamber of the oil cylinder is connected to the bottom end of the second oil return pipeline. 9. A numerically controlled hydraulic machine according to claim 7, wherein the elliptical cylinder mouth flange is arranged below the bottom end of the second oil return pipeline.