CN114619413B - Negative clearance steel ball intermediate shaft assembly equipment and assembly method for steering system - Google Patents
Negative clearance steel ball intermediate shaft assembly equipment and assembly method for steering system Download PDFInfo
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- CN114619413B CN114619413B CN202011466646.0A CN202011466646A CN114619413B CN 114619413 B CN114619413 B CN 114619413B CN 202011466646 A CN202011466646 A CN 202011466646A CN 114619413 B CN114619413 B CN 114619413B
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- sliding tube
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 93
- 239000010959 steel Substances 0.000 title claims abstract description 93
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000010438 heat treatment Methods 0.000 claims abstract description 53
- 230000006698 induction Effects 0.000 claims abstract description 23
- 238000003825 pressing Methods 0.000 claims abstract description 21
- 239000000956 alloy Substances 0.000 claims abstract description 16
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 230000000903 blocking effect Effects 0.000 claims description 17
- 235000004443 Ricinus communis Nutrition 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000012797 qualification Methods 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 229910001087 A-4 tool steel Inorganic materials 0.000 description 1
- 229910001193 A-6 tool steel Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
- B25H1/00—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby
- B25H1/06—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby of trestle type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
- B25H1/00—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby
- B25H1/10—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby with provision for adjusting holders for tool or work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
- B25H1/00—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby
- B25H1/12—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby with storage compartments
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
- B25H1/00—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby
- B25H1/14—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby with provision for adjusting the bench top
- B25H1/16—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby with provision for adjusting the bench top in height
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Mechanical Engineering (AREA)
- Automatic Assembly (AREA)
Abstract
The invention relates to a negative play steel ball type intermediate shaft assembly device and an assembly method of a steering system, which comprise an alloy bracket with a working platform arranged at the upper part, wherein an assembly pressing mechanism component is arranged on the working platform, a high-frequency induction heating mechanism is arranged on the working platform at the rear part of the assembly pressing mechanism component, and the high-frequency induction heating mechanism heats a sliding pipe of an intermediate shaft to be assembled, which is clamped by the assembly pressing mechanism component.
Description
Technical Field
The invention relates to the field of assembly devices and assembly methods of parts, in particular to an assembly device of a steel ball type intermediate shaft with negative play applied to an automobile steering system and an assembly method matched with the assembly device.
Background
At present, in the field of development, production and manufacturing of automobile steering systems, there is a procedure for assembling a steering engine intermediate shaft, in which steel balls are assembled into ball grooves of the intermediate shaft and then pressed into a sliding tube, and since the intermediate shaft belongs to a key part of an automobile steering system, the assembly accuracy of the intermediate shaft directly affects the quality of a finished product and the driving safety of the automobile steering system in the future, and therefore, the procedure is one of procedures which particularly need to be emphasized in the process of assembling the automobile steering system.
As the on-site operation workers find that the intermediate shaft assembly technology in the prior art has a plurality of problems in the actual working process:
1. The assembly speed is low, and the efficiency is low;
2. the assembly precision is poor due to the fact that the intermediate shaft, the ball groove and the sliding tube are difficult to accurately position;
3. the lack of suitable and more versatile equipment results in a large number of assembly parts, and the worker has a significant difficulty in operating the equipment once the production needs to be adjusted.
In view of the foregoing, there is a great need for a new type of intermediate shaft assembling apparatus and assembling method, which can meet different length requirements and different types of negative play intermediate shaft assembly, and during assembling, the intermediate shaft and the sliding tube can be subjected to fine adjustment adaptation, the steel ball is convenient to assemble, and the intermediate shaft, the steel ball groove and the sliding tube can be precisely positioned.
Disclosure of Invention
In order to solve the problems, the invention provides a negative play steel ball type intermediate shaft assembly device and an assembly method of a steering system, wherein an assembly mechanism arranged on an alloy bracket with a platform is used for adjusting the upper and lower heights through a ball screw by utilizing the upper and lower spaces of the intermediate shaft so as to meet the assembly with different length requirements, meanwhile, the positions of the intermediate shaft and a steel ball groove are precisely positioned, a sliding groove with an adjustable phase angle is formed in an upper supporting system of the intermediate shaft by taking the intermediate shaft as a reference, the steel ball can be arranged in a cartridge clip in advance, then the assembly mechanism is matched with a high-frequency induction heating coil mechanism, a sliding tube is heated by high-frequency heating, the upper parts of the steel ball and the intermediate shaft are assembled with the sliding tube by rotating the ball screw after being heated to a fixed temperature in combination with a thermal expansion and contraction principle, and finally an anti-falling cap is pressed. The invention can meet the requirements of assembling steel ball products with negative play of different types of intermediate shafts of steering systems, is easy to operate, shortens the assembly time, improves the assembly precision and efficiency of the intermediate shafts, improves the assembly qualification rate of sample stages, and greatly reduces the trial production cost.
The invention relates to a device and a method for assembling a steel ball type intermediate shaft with negative play of a steering system, which specifically comprises the following steps:
the utility model provides a steering system's negative play steel ball formula jackshaft assembly equipment, is provided with work platform's alloy bracket, its characterized in that including being provided with upper portion:
The working platform of the alloy bracket is provided with an assembly pressing mechanism assembly, the working platform at the rear part of the assembly pressing mechanism assembly is provided with a high-frequency induction heating mechanism, and the high-frequency induction heating mechanism heats a sliding pipe of a middle shaft to be assembled, which is clamped by the assembly pressing mechanism assembly;
The working platform at the side part of the assembly press-fitting mechanism assembly is provided with an anti-drop cap press-fitting mechanism;
The anti-drop cap press-fitting mechanism has the function of pressing the anti-drop cap in after the assembly is completed, preventing the shaft from being separated from the pipe, and completing the final assembly.
A water pump and a water tank are arranged in a frame body surrounded by the alloy support at the lower part of the working platform, and the water pump and the water tank cool down the high-frequency induction heating mechanism.
The invention relates to a negative play steel ball type intermediate shaft assembly device of a steering system, which is characterized in that an assembly press-fitting mechanism component comprises a positioning plate, an assembly track, an intermediate shaft upper supporting and clamping device, a steel ball assembly clip, a fixed bracket, a steel ball assembly ball screw, a sliding pipe fixing device and an adjustable positioning pin for sliding pipes, wherein the positioning plate is formed by connecting two horizontal transverse plates and a vertical plate which are in mutually right-angle shapes, the horizontal transverse plates are fixedly connected with a working platform in a manner of screwing bolts through threaded holes formed in the surface of the horizontal transverse plates, two assembly tracks are vertically arranged on the surface of the vertical plate, the intermediate shaft upper supporting and clamping device is arranged on the track, a fixed bracket is arranged at the lower part of the clamping device, the steel ball assembly clip is arranged at the upper part of the fixed bracket, the upper part of the intermediate shaft is clamped and fixed by the clamping device, the steel ball assembly ball screw arranged at the upper part of the middle shaft, namely, the lifting and lowering mechanism for sliding pipe upper part of the intermediate shaft to be assembled is driven, the lifting and lowering mechanism for heating the steel ball assembly is arranged at the upper part of the middle shaft, the middle shaft is fixed by the sliding pipe, and the steel ball assembly clip is fixed by the sliding pipe, and the position of the fixed tube is arranged at the upper part of the middle shaft.
The invention relates to a steel ball type intermediate shaft assembly device with negative play for a steering system, which is characterized in that a high-frequency induction heating mechanism is a heating device with a high-frequency heating ring, and the high-frequency heating ring is arranged around a pipe body of a sliding pipe in a surrounding manner to heat the pipe body.
The high-frequency induction heating principle is to use high-frequency alternating current to flow to a conductor (usually a copper tube) curled into a ring shape, thereby generating magnetic beams, placing metal in the conductor, enabling the magnetic beams to penetrate through the metal body, generating nest current (rotating current) in the direction of self-paying with the magnetic beams, generating heat under the influence of the nest current, and adopting the heating mode, namely induction heating, wherein the sliding tube is suitable for the sliding tube heating arranged on the negative play steel ball type intermediate shaft assembly of the steering system.
The negative clearance steel ball type intermediate shaft assembly equipment for the steering system is characterized in that the number of the steel ball assembly clips is 3, and the steel ball assembly clips are uniformly distributed at intervals of 120 degrees circumferentially opposite to the shaft body of the intermediate shaft to be assembled.
Each steel ball assembly clip is capable of assembling 10 sets of steel balls.
The negative clearance steel ball type intermediate shaft assembly device of the steering system is characterized in that one side of the upper part of the plate body of the vertical plate is provided with 3 blocking blocks which are vertically distributed, the blocking blocks are provided with blocking shafts which are transversely inserted into and penetrate through the blocking blocks, and the upper part of the intermediate shaft is blocked by the blocking shafts to support the clamping device to fall.
The blocking block and the blocking shaft can block the upper supporting and clamping device of the middle shaft when needed, and prevent the middle shaft from freely falling.
The negative clearance steel ball type intermediate shaft assembly equipment of the steering system is characterized in that an arc-shaped chute and a lock catch are arranged on the upper supporting and clamping device of the intermediate shaft, and the intermediate shaft to be assembled is positioned in a sliding mode in the arc-shaped chute and locked by the lock catch.
The invention relates to a steel ball type intermediate shaft assembly device with negative play for a steering system, which is characterized in that the movable casters with locking devices are arranged at the 4 corners of the bottom of an alloy bracket, when the movable casters are required to move, an adjusting plate of the locking devices is rotated clockwise to lift the movable casters, and after the adjusting device is adjusted to a preset working position, the adjusting plate is rotated anticlockwise to lock the movable casters.
The movable castor with the locking device is usually a fuma castor, and a single castor can carry 250KG, so that the load and operation requirements of the steel ball type intermediate shaft assembly equipment with the negative play of the steering system can be met.
The method for assembling the negative clearance steel ball type intermediate shaft of the steering system is based on the negative clearance steel ball type intermediate shaft assembling equipment of the steering system, and comprises the following specific steps of:
1) Before assembly, confirming that all the tools of the assembly equipment are in place correctly and the assembly device is positioned on a preset working position, and locking the movable castor;
2) The ball screw for steel ball assembly is rotated, the upper supporting and clamping device of the intermediate shaft is lifted, then the upper part of the intermediate shaft to be assembled is placed into the upper supporting and clamping device of the intermediate shaft, the installation position is finely adjusted through the arc-shaped chute, and then the upper part of the intermediate shaft to be assembled is installed in place and clamped and fixed through the lock catch;
3) In the step 2), the angle requirement on the steel ball groove of the middle shaft and the sliding tube is paid attention to;
4) The ball screw for assembling the steel balls reversely rotates, the supporting and clamping device at the upper part of the intermediate shaft is lowered, namely the upper part of the intermediate shaft to be assembled is also lowered synchronously, and the steel ball groove of the intermediate shaft is assembled by the cartridge clip for assembling the steel balls, which is arranged at the upper part of the fixed bracket;
5) Fixing the sliding tube through a sliding tube fixing device arranged in the middle of the inside of the fixing support, confirming the same axis as the upper part of the intermediate shaft to be assembled, starting a high-frequency induction heating mechanism, and heating the sliding tube by a high-frequency heating ring which is arranged around the tube body of the sliding tube in a surrounding manner until the preset heating time is 3-3.4 seconds, wherein the heating process of the sliding tube is finished after the heating is stopped;
6) Continuously rotating a ball screw for steel ball assembly, so that the upper part of an intermediate shaft to be assembled is lowered, the intermediate shaft is assembled into a sliding pipe in a pressing mode, and after accurate pressing is confirmed, an anti-falling cap is pressed in through an anti-falling cap press-fitting mechanism to prevent the shaft from being separated from the pipe;
7) After the assembled intermediate shaft is naturally cooled, the upper supporting and clamping device and the sliding tube fixing device of the intermediate shaft are loosened, the assembled intermediate shaft is taken out, the anti-drop cap guard plate is detached, the workpiece is placed at a preset position, and the assembly is finished until the next time, and the assembly is ready.
It should be noted that the anti-drop cap guard board is detached firstly after the intermediate shaft is taken out, and the main function of the anti-drop cap guard board is to prevent the anti-drop cap from being cracked and scratched in the press-fitting process, and the anti-drop cap is a plastic piece.
The method for assembling the steel ball type intermediate shaft with the negative clearance of the steering system is characterized in that in the step 2), the auxiliary positioning shaft of the pipe can be used for auxiliary positioning, the upper part of the intermediate shaft to be assembled is clamped after being installed in place, and then the auxiliary positioning shaft of the pipe is taken down.
According to the method for assembling the steel ball type intermediate shaft with negative play of the steering system, in the step 6), if the gap between the intermediate shaft and the sliding tube is uneven, the position of the intermediate shaft can be manually adjusted so that the intermediate shaft can be smoothly pressed into the sliding tube.
The invention relates to a negative clearance steel ball type intermediate shaft assembly device and an assembly method of a steering system, wherein the design principle of the assembly device is as follows: the sliding tube is heated by the high-frequency induction heating device, the size of the ball groove of the sliding tube is thermally expanded to change after a certain temperature is reached, negative clearance assembly is performed through equipment, and the requirements of higher rigidity, clearance and sliding force of the intermediate shaft are met after assembly.
The negative clearance steel ball type intermediate shaft assembly equipment and the assembly method of the steering system have the following beneficial effects:
1. According to the negative clearance steel ball type intermediate shaft assembly equipment and the assembly method of the steering system, the assembly precision and the assembly efficiency of the intermediate shaft are improved, and the assembly qualification rate of a sample stage is also improved;
2. according to the negative clearance steel ball type intermediate shaft assembly equipment and the assembly method of the steering system, an operator can easily operate the equipment, the assembly working time is shortened, and the trial production cost is greatly reduced;
3. the assembly equipment and the assembly method for the negative clearance steel ball type intermediate shaft of the steering system can meet the requirement of assembling different types of negative clearance steel ball products of the intermediate shaft of the steering system, and are wide in application range and good in adaptability.
Drawings
FIG. 1 is a schematic diagram of a specific construction of a steel ball type intermediate shaft assembly device and method for a steering system with negative play according to the present invention;
Fig. 2 is a schematic diagram of a specific structure of an assembly press-fitting mechanism assembly of a negative play steel ball type intermediate shaft assembly device and an assembly method of a steering system;
Fig. 3 is a schematic diagram showing the assembly effect of the assembly device and the assembly method of the steel ball type intermediate shaft with negative play for the steering system.
In the figure, A1-alloy bracket, A1 a-working platform, A1B-locking device, A1C-movable caster, A2-intermediate shaft to be assembled, A2 a-sliding tube, A3-water pump, A4-water tank, an A-assembly press-fitting mechanism component, a B-high frequency induction heating mechanism, a B1-high frequency heating ring B1, a C-anti-dropping cap press-fitting mechanism, an A1-positioning plate, an A1 a-blocking block, an A1B-blocking shaft, an A2-assembly track, an A3-intermediate shaft upper supporting and clamping device, an A3 a-arc chute, an A3B-lock catch, an A4-steel ball assembly spring clip, an A5-fixing bracket, an A6-steel ball assembly ball screw, an A7-sliding tube fixing device and an A8-sliding tube adjustable positioning pin.
Detailed Description
The invention relates to a device and a method for assembling a steel ball type intermediate shaft with negative play for a steering system, which are described in detail below with reference to the accompanying drawings and examples.
Examples
As shown in fig. 1-3, a negative play steel ball type intermediate shaft assembly device of a steering system comprises an alloy bracket 1, wherein the upper part of the alloy bracket is provided with a working platform 1a, an assembly pressing mechanism assembly A is arranged on the working platform of the alloy bracket, a high-frequency induction heating mechanism B is arranged on the working platform at the rear part of the assembly pressing mechanism assembly, and the high-frequency induction heating mechanism heats a sliding pipe 2a of an intermediate shaft 2 to be assembled, which is clamped by the assembly pressing mechanism assembly;
The working platform 1a at the side part of the assembly press-fitting mechanism assembly A is provided with an anti-drop cap press-fitting mechanism C;
A water pump 3 and a water tank 4 are arranged in a frame body surrounded by the alloy support 1 at the lower part of the working platform 1a, and the water pump and the water tank cool down the high-frequency induction heating mechanism B.
In the embodiment, the power of the water pump is 370W, the voltage is 220V, the rated flow is 25L/MIN, the rated lift is 20M, the maximum volume of the water tank is 68L, the water pump is connected with the water tank through a pipeline, and the water quantity is required to be ensured to be more than 50L when the equipment operates.
The assembly press-fitting mechanism assembly A comprises a positioning plate A1, an assembly track A2, a middle shaft upper supporting clamping device A3, a steel ball assembly cartridge clip A4, a fixing bracket A5, a steel ball assembly ball screw A6, a sliding tube fixing device A7 and an adjustable positioning pin A8 for sliding tubes, wherein the positioning plate is formed by connecting two horizontal transverse plates and a vertical plate which are in mutually right-angle shapes, the horizontal transverse plates are fixedly connected with a working platform 1a in a mode of screw holes formed in the surface of the horizontal transverse plates in a screw bolt screwing mode, two assembly tracks are vertically arranged on the surface of the vertical plate, a middle shaft upper supporting clamping device is arranged on the tracks, a fixing bracket is arranged at the lower part of the clamping device, the steel ball assembly cartridge clip is arranged at the upper part of the fixing bracket, the upper part of the middle shaft to be assembled is clamped and fixed by the fixing bracket, the lifting of the middle shaft upper supporting clamping device is controlled through rotation of the steel ball assembly ball screw arranged at the upper part of the vertical plate, namely, the lifting of the middle shaft upper part to be assembled is driven to be assembled by lifting the middle shaft upper part, the steel ball assembly screw is arranged at the upper part of the middle shaft assembly ball screw, the steel ball assembly screw is arranged at the upper part of the middle shaft to be assembled by the fixing bracket, the steel ball assembly tube is fixed by the sliding tube fixing device and the steel tube fixing device and the middle shaft fixing device is arranged at the height, and the middle shaft fixing device is fixed by the sliding tube fixing device and the steel tube fixing device.
The high-frequency induction heating mechanism B is specifically a heating device with a high-frequency heating ring B1 which is circumferentially arranged around the tube body of the sliding tube 2a to heat the same.
The number of the steel ball assembling clips A4 is 3, and the steel ball assembling clips A are uniformly distributed at intervals of 120 degrees along the circumference of the shaft body of the intermediate shaft 2 to be assembled.
One side of the upper part of the plate body of the vertical plate is provided with 3 vertical blocking blocks A1a, the blocking blocks are provided with blocking shafts A1b which are transversely inserted into and penetrate through the blocking blocks, and the upper part of the middle shaft is blocked by the blocking shafts to support and clamp the falling of the clamping device A3.
The upper supporting and clamping device A3 of the intermediate shaft is provided with an arc-shaped chute A3a and a lock catch A3b, and the intermediate shaft 2 to be assembled is positioned in a sliding manner in the arc-shaped chute and locked by the lock catch.
The movable casters 1c with the locking devices 1b are arranged at the 4 corners of the bottom of the alloy bracket 1, when the movable casters are required to move, the movable casters are lifted by rotating the adjusting plate of the locking devices clockwise, and after the adjusting device reaches a preset working position, the movable casters are locked by rotating the adjusting plate anticlockwise.
The method for assembling the negative clearance steel ball type intermediate shaft of the steering system is based on the negative clearance steel ball type intermediate shaft assembling equipment of the steering system, and comprises the following specific steps of:
1) Before assembly, each fixture of the assembly equipment is confirmed to be in place correctly, the assembly device is positioned on a preset working position, and the movable castor 1c is locked;
2) The ball screw A6 for steel ball assembly is rotated, the upper supporting and clamping device A3 of the intermediate shaft is lifted, then the upper part of the intermediate shaft 2 to be assembled is placed into the upper supporting and clamping device of the intermediate shaft, the installation position is finely adjusted through the arc-shaped chute A3a, and the upper part of the intermediate shaft to be assembled is installed in place and clamped and fixed through the lock catch A3 b;
3) In the step 2), the angle requirement on the steel ball groove of the middle shaft and the sliding tube 2a should be paid attention to;
4) The ball screw A6 for assembling the steel balls is reversely rotated, the supporting and clamping device at the upper part of the intermediate shaft is lowered, namely the upper part of the intermediate shaft 2 to be assembled is synchronously lowered, and the steel ball groove of the intermediate shaft is assembled by the cartridge clip A4 for assembling the steel balls, which is arranged at the upper part of the fixed bracket A5;
5) Fixing the sliding tube 2a through a sliding tube fixing device A7 arranged in the middle of the inside of a fixing support A5, confirming the same axial lead as the upper part of the intermediate shaft 2 to be assembled, starting a high-frequency induction heating mechanism B, and heating the sliding tube by a high-frequency heating ring which is arranged around the tube body of the sliding tube in a surrounding manner until the preset heating time is 3-3.4 seconds, wherein the heating process of the sliding tube is finished after the heating is stopped;
the heating time in this example was 3.2 seconds.
6) Continuing to rotate the ball screw A6 for steel ball assembly, so that the upper part of the intermediate shaft 2 to be assembled is lowered, the intermediate shaft is assembled into the sliding tube 2a in a pressing mode, after accurate pressing is confirmed, the anti-falling cap is pressed in through the anti-falling cap pressing mechanism C, and the shaft is prevented from being separated from the tube;
7) After the assembled intermediate shaft is naturally cooled, the upper supporting and clamping device A3 and the sliding tube fixing device A7 of the intermediate shaft are loosened, the assembled intermediate shaft is taken out, the anti-drop cap guard plate is detached, the workpiece is placed at a preset position, and the assembly is finished until the next time, and the assembly is ready.
In the step 2), the auxiliary positioning shaft of the pipe can be used for auxiliary positioning, the upper part of the intermediate shaft to be assembled is clamped after being installed in place, and then the auxiliary positioning shaft of the pipe is taken down.
In step 6), if the gap between the intermediate shaft and the sliding tube 2a is uneven, the position of the intermediate shaft can be manually fine-tuned so that it can be smoothly pressed into the sliding tube.
It will be appreciated by persons skilled in the art that the above embodiments have been provided for the purpose of illustration only and not for the purpose of limitation, and that variations and modifications of the above described embodiments will fall within the scope of the appended claims as long as they are within the true spirit of the application.
The assembly equipment and the assembly method for the negative clearance steel ball type intermediate shaft of the steering system improve the assembly precision and efficiency of the intermediate shaft, improve the assembly qualification rate of a sample stage, are easy for operators to operate, shorten the assembly working hours and greatly reduce the trial production cost, and can meet the assembly of different types of negative clearance steel ball products of the intermediate shaft of the steering system.
Claims (4)
1. The utility model provides a steering system's negative play steel ball formula jackshaft assembly equipment, is provided with alloy support (1) that work platform (1 a) are provided with on upper portion, its characterized in that:
An assembling and pressing mechanism component (A) is arranged on a working platform (1 a) of the alloy bracket (1), a high-frequency induction heating mechanism (B) is arranged on the working platform at the rear part of the assembling and pressing mechanism component, and the high-frequency induction heating mechanism heats a sliding tube (2 a) of an intermediate shaft (2) to be assembled, which is clamped by the assembling and pressing mechanism component;
The working platform (1 a) at the side part of the assembly press-fitting mechanism assembly (A) is provided with an anti-drop cap press-fitting mechanism (C);
The anti-drop cap press-fitting mechanism has the function of pressing the anti-drop cap in after the assembly is completed, preventing the shaft from being separated from the pipe, and completing the final assembly;
A water pump (3) and a water tank (4) are arranged in a frame body surrounded by the alloy bracket (1) at the lower part of the working platform (1 a), and the water pump and the water tank cool down the high-frequency induction heating mechanism (B);
The assembly press-fitting mechanism assembly (A) comprises a positioning plate (A1), an assembly track (A2), an intermediate shaft upper part supporting and clamping device (A3), a steel ball assembly cartridge clip (A4), a fixed bracket (A5), a steel ball assembly ball screw (A6), a sliding tube fixing device (A7) and an adjustable positioning pin (A8) for sliding tubes, wherein the positioning plate is formed by connecting two horizontal transverse plates and a vertical plate which are in a mutually right-angle shape, the horizontal transverse plates are fixedly connected with a working platform (1 a) in a mode of screw bolts screwed into threaded holes formed in the surface of the horizontal transverse plates, two assembly tracks are vertically arranged on the surface of the vertical plate, the upper part supporting and clamping device for the intermediate shaft is arranged on the track, the lower part of the clamping device is provided with a fixed bracket, the steel ball assembly cartridge clip is arranged on the upper part of the fixed bracket, the upper part of the intermediate shaft upper part supporting and clamping device for the steel ball is clamped and fixed with the upper part of the intermediate shaft (2) to be assembled, the lifting and clamping device for the sliding tubes is controlled by rotation of the ball assembly ball screw arranged on the upper part of the vertical plate, namely, the upper part of the intermediate shaft is fixed with the steel ball assembly pin is fixed with the fixed by the sliding tube fixing device in a sliding tube fixing position when the upper part is fixed with the steel ball assembly position of the intermediate shaft is adjusted, and the sliding tube is heated by the high-frequency induction heating mechanism (B);
The high-frequency induction heating mechanism (B) is a heating device with a high-frequency heating ring (B1), and the high-frequency heating ring is arranged around the tube body of the sliding tube (2 a) in a surrounding manner and is used for heating the sliding tube;
The number of the steel ball assembling clips (A4) is 3, and the steel ball assembling clips are uniformly distributed at intervals of 120 degrees along the circumference of the shaft body of the intermediate shaft (2) to be assembled;
a blocking block (A1 a) which is vertically distributed at 3 positions is arranged on one side of the upper part of the plate body of the vertical plate, a blocking shaft (A1 b) which is transversely inserted into and penetrates through the blocking block is arranged on the blocking block, and the upper part of the middle shaft is blocked by the blocking shaft to support and clamp A3 to fall;
The upper supporting and clamping device (A3) of the intermediate shaft is provided with an arc-shaped chute (A3 a) and a lock catch (A3 b), and the intermediate shaft (2) to be assembled is positioned in a sliding way in the arc-shaped chute and locked by the lock catch;
the movable casters (1 c) with the locking devices (1 b) are arranged at the 4 corners of the bottom of the alloy bracket (1), the movable casters are lifted by the adjusting discs of the clockwise rotation locking devices when the movable casters need to be moved, and the movable casters are locked by anticlockwise rotation of the adjusting discs after the adjusting device reaches a preset working position.
2. A method for assembling a negative play steel ball type intermediate shaft of a steering system, which is based on the device for assembling the negative play steel ball type intermediate shaft of the steering system according to the above claim 1, and comprises the following specific steps:
1) Before assembly, each tool of the assembly equipment is confirmed to be in place correctly, the assembly device is positioned on a preset working position, and the movable castor (1 c) is locked;
2) The ball screw (A6) for steel ball assembly is rotated, the upper supporting and clamping device (A3) of the intermediate shaft is lifted, then the upper part of the intermediate shaft (2) to be assembled is placed into the upper supporting and clamping device of the intermediate shaft, the installation position is finely adjusted through the arc-shaped sliding groove (A3 a), and the upper part of the intermediate shaft to be assembled is installed in place and clamped and fixed through the lock catch (A3 b);
3) In the step 2), the angle requirement on the intermediate shaft steel ball groove and the sliding tube (2 a) is paid attention to;
4) A ball screw (A6) for assembling the steel balls reversely rotates, the supporting and clamping device at the upper part of the intermediate shaft is lowered, namely the upper part of the intermediate shaft (2) to be assembled is also lowered synchronously, and the steel ball groove of the intermediate shaft is assembled by a cartridge clip (A4) for assembling the steel balls, which is arranged at the upper part of the fixed bracket (A5);
5) Fixing the sliding tube (2 a) through a sliding tube fixing device (A7) arranged in the middle of the inside of a fixing support (A5), confirming the same axis with the upper part of an intermediate shaft (2) to be assembled, starting a high-frequency induction heating mechanism (B), and heating the sliding tube by a high-frequency heating ring which is arranged around the tube body of the sliding tube in a surrounding manner until the preset heating time is 3-3.4 seconds, wherein the heating process of the sliding tube is finished after the heating is stopped;
6) Continuing to rotate the ball screw (A6) for steel ball assembly, so that the upper part of the intermediate shaft (2) to be assembled descends, the intermediate shaft is assembled into the sliding tube (2 a) in a pressing mode, after accurate pressing is confirmed, the anti-falling cap is pressed in through the anti-falling cap press-fitting mechanism (C), and the shaft is prevented from being separated from the tube;
7) After the assembled intermediate shaft is naturally cooled, the upper supporting and clamping device (A3) of the intermediate shaft and the sliding tube fixing device (A7) are loosened, the assembled intermediate shaft is taken out, the anti-drop cap guard plate is detached, the workpiece is placed at a preset position, and the assembly is finished until the next time, and the assembly is ready.
3. The method for assembling a steel ball type intermediate shaft with negative play for a steering system according to claim 2, wherein in the step 2), the auxiliary positioning shaft is used for auxiliary positioning, the upper part of the intermediate shaft to be assembled is clamped after being put in place, and then the auxiliary positioning shaft is taken off.
4. A method of assembling a steel ball type intermediate shaft with negative play for a steering system according to claim 2, wherein in said step 6), if the gap between the intermediate shaft and the sliding tube (2 a) is uneven, the position of the intermediate shaft can be manually fine-tuned so that it can be smoothly pressed into the sliding tube.
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| CN202011466646.0A CN114619413B (en) | 2020-12-14 | 2020-12-14 | Negative clearance steel ball intermediate shaft assembly equipment and assembly method for steering system |
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| CN202011466646.0A CN114619413B (en) | 2020-12-14 | 2020-12-14 | Negative clearance steel ball intermediate shaft assembly equipment and assembly method for steering system |
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| CN114619413B true CN114619413B (en) | 2025-02-14 |
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| CN214323262U (en) * | 2020-12-14 | 2021-10-01 | 博世华域转向系统（烟台）有限公司 | Negative clearance steel ball type intermediate shaft assembly equipment of steering system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| FR2822122B1 (en) * | 2001-03-14 | 2003-05-23 | Nacam | ASSEMBLY OF A STEERING COLUMN BRACKET WITH A DIRECTION PINION OF A MOTOR VEHICLE |
| JP6182874B2 (en) * | 2013-01-22 | 2017-08-23 | 株式会社ジェイテクト | Steering device coupling device |
| CN106625343B (en) * | 2015-07-17 | 2018-11-16 | 博世华域转向系统有限公司 | A kind of guide tracked jackshaft clamp for assembling of the steel ball of steering system and assembly method |
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| CN214323262U (en) * | 2020-12-14 | 2021-10-01 | 博世华域转向系统（烟台）有限公司 | Negative clearance steel ball type intermediate shaft assembly equipment of steering system |
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