KR100219427B1 - Spiral hole processing device for die bush - Google Patents

Abstract

The present invention relates to a spiral groove processing apparatus of a die bush, wherein an air spindle is rotatably mounted on a front surface of a column installed at one side of a bed, and the other side of the bed is moved forward and backward at a predetermined distance from the air spindle. It is installed, the front and rear parts of the forward and reverse means is coupled to the chuck for chucking the die bush and the adjustment means for adjusting the feeding distance at the same time to give the transfer force to the forward and reverse means, Fine feed means for guiding forward and backward means in the Y-axis direction and spiral groove processing device combined with fine adjustment means for adjusting the conveying distance are provided, so that the proper angle and Multi-threaded spiral grooves are formed in depth to suppress the rise of slugs during press processing, as well as to prevent the slugs from rising. It is possible to obtain a good quality product by solving the poor quality of phosphorus.

Description

Spiral groove processing equipment of die bush

The present invention relates to a spiral groove processing apparatus of a die bush, and more particularly, to a spiral groove processing apparatus of a die bush that can prevent the rise of slugs due to the pressing force of the punch during press working.

In general, a press apparatus for forming a uniform shape on a slug of a relatively thin sheet metal has a die bush in which a die bush made of cemented carbide having a shape to be processed is installed in a mold. When the slug is placed on the upper part and the punching operation is a kind of press, the slug is bent or punched (punched) by the punch force.

However, as described above, when the press is processed by the oil and magnetism between the punch and the slug is generated, the slug is raised together with the punch when the punch is raised, there is a disadvantage that the slug must be removed from time to time during the molding operation.

In order to solve the above disadvantages, conventionally, a hole is formed in the inner peripheral surface of the die bush to prevent the slug from rising due to the compressive force of the air during the press work.

As such, various types of methods have been conventionally provided for processing holes in die bushes. That is, the method provides a method of manually drilling holes using a diamond string on the inner side of a rectangular die bush, and a method of processing holes using a wire discharge machine on the inner surface of a circular die bush, or a separate stripper for punching. ) To remove the slug which rises as it is attached to the punch.

However, in the method of processing a hole in a rectangular die bush as described above, the hole size is small and can not be applied to a circular material, there is a problem in that the machining operation is cumbersome in particular by processing the hole by hand.

In addition, the wire discharge machine can be machined regardless of the size of the hole, but the workability is reduced, the processing time is delayed, and in the installation of the stripper, there is a limit to installing the stripper when the processing hole is small. there was.

The present invention is to solve the above problems, the object of the present invention is to form a multi-threaded spiral groove at an appropriate angle and depth on the inner peripheral surface of the die bush on which the slug is seated, thereby suppressing the rise of the slug during press working Rather, it is to provide a spiral groove processing apparatus of a die bush that can obtain a high-quality product by solving the poor quality of processing due to the slug rise.

1 is a perspective view showing a spiral groove processing apparatus of a die bush according to the present invention,

FIG. 2 is a partial cross-sectional view of a portion of the spiral groove processing apparatus of FIG. 1;

3 is a plan view showing a state in which the spiral groove processing apparatus according to the present invention is transferred in the Y-axis direction,

4 is a front view showing a state in which the spiral groove processing apparatus according to the present invention is transferred in the X-axis direction,

5 is a perspective view illustrating a die bush in which a spiral groove is processed on an inner circumferential surface by the spiral groove processing apparatus according to the present invention.

Explanation of symbols on the main parts of the drawings

10: bed 12: column

14: air spindle 16: wheel

20: forward and reverse means 22: guide pin

24: housing 24a: limiting projection

26: spiral bush 26a: spiral groove

26b: Split groove 28: Collet

30: flow preventing member 32: angle divider

34: chuck 40: adjusting means

42: adjustment handle 50: fine transfer means

52: cross slide 54: support

60: fine adjustment means 62: fine adjustment handle

A feature of the present invention for achieving the above object is a processing apparatus for processing a spiral groove on the inner peripheral surface of the die bush is installed in the mold, the column is installed upright on one side of the bed, and the column front part rotates An air spindle for machining a spiral groove on the inner circumferential surface of the die bush and a forward / reverse means installed on the bed so as to be linearly spaced apart from the air spindle by a predetermined distance, and the front of the forward and reverse means A chuck attached to the chuck for chucking the die bush, coupled to a rear portion of the forward and reverse means, and providing a feed force to the forward and reverse means, and adjusting means for adjusting the feed distance; It is coupled to the lower side and the micro-feeding means for guiding the forward and reverse means in the Y-axis direction and to adjust the feed distance of the fine transport means For is achieved by fine adjustment means consisting of a.

According to a preferred embodiment of the present invention, the forward and reverse means is provided with a housing having a plurality of guide pins mounted on the upper surface and a spiral bush installed to be capable of linear transfer while rotating in the housing and a collet fixed to the spiral bush. Is achieved.

Adjusting means according to a preferred embodiment of the present invention is achieved by being provided with a manually operated adjusting handle to enable the spiral bush to be transported.

The microfeeding means according to a preferred embodiment of the present invention is achieved by being a cross slide for conveying while guiding the housing in a direction perpendicular to the column.

Fine adjustment means according to a preferred embodiment of the present invention is achieved by the fine adjustment handle for adjusting the conveying distance of the housing is finely conveyed along the cross slide.

EMBODIMENT OF THE INVENTION Hereinafter, the preferred embodiment of the spiral groove processing apparatus of the die bush which concerns on this invention is demonstrated in detail based on an accompanying drawing.

1 and 2 are views showing a spiral groove processing apparatus according to the present invention, an air spindle rotatably mounted to a bed 10 and a column 12 installed on one side of the bed 10 and a front surface thereof. (air spindle) 14 and the other side of the bed 10 is coupled to the forward and backward means 20 and the rear of the linearly installed in such a way that the linear transfer in the X-axis direction adjustment means for adjusting the transport distance (40) And, it is coupled to the lower, forward and backward means 20 for adjusting the transport distance of the micro-feeding means 50 and the micro-feeding means 60 for guiding the forward and backward means 20 in the Y-axis direction. And fine adjustment means ().

At one end of the air spindle 14, a wheel 16 is bitten on the inner circumferential surface of the workpiece such as the die bush 2 so as to process a plurality of rows of spiral grooves 2a to an appropriate depth. Silver spiral groove (2a) can be replaced with the appropriate wheel according to the size of the inner diameter and the depth to be processed.

The forward and reverse means 20 is a spiral bush installed to be rotatable and linearly transported in the housing 24 having the plurality of guide pins 22 mounted on the upper surface and the hollow portion 24a of the housing 24. It is provided with a collet (28) which is fixed to the bush 26 and its central portion and reciprocated while rotating with the spiral bush (24).

The outer circumferential surface of the collet 28 is interposed with a flow preventing member 30 to precisely transfer the collet 28 without flow, and the stroke distance of the spiral bush 26 and the collet 28 is provided on the inner circumferential surface of the housing 24. In order to limit the limiting projections 24a protrude integrally.

The spiral bush 26 is formed on the outer circumferential surface of the spiral bush 26 so that the spiral groove 26a into which one end of the guide pin 22 is inserted is disposed, and the angle divider 32 mounted to the rear of the collet 28 is fitted to the rear portion. For example, the dividing grooves 26b are formed at 90 ° and 60 °, and a chuck 34 for chucking the die bush 2 is mounted at the tip end thereof.

The adjusting means 40 is provided with an adjusting handle 42 which is coupled to the rear side of the angle divider 32 and manually operated for feeding while rotating the spiral bush 26. In addition, the adjusting means 40 may be a transfer cylinder which is operated by hydraulic and / or pneumatic pressure to automatically reciprocate the spiral bush 26.

The micro conveying means 50 is provided with a cross slide 52 for guiding the housing 24 in the Y-axis direction, and the fine adjusting means 60 protrudes from one side of the cross slide 52. It is provided with a fine adjustment handle 62 for penetrating 54 and at the same time finely conveying the housing 24 along the cross slide 52.

Referring to Figures 3 and 4 the action of the die bush spiral groove processing apparatus according to the present invention configured as described above in detail as follows.

After rotating the adjusting handle 42, the spiral bush 26 and the collet 28 fixed thereto are retracted in the X-axis direction, and then a plurality of spiral grooves 2a are provided in the chuck 34 mounted at the distal end of the collet 28. Chuck the workpiece to be machined, i.e., the circular die bush 2, and then rotate the adjusting handle 42 in the reverse direction again so that one end of the wheel 16 bited by the air spins 14 and the spiral groove ( The inner circumferential surface of the die bush 2 is brought into contact with the position to process 2a).

At this time, the spiral bush 26 is guided by the guide pin 22 having one end inserted into its spiral groove 26a, and the collet 28 is precisely linearly reciprocated without flow by the flow preventing member 30. The spiral bush 26 and the collet 28 are caught at one end by a limiting protrusion 24a protruding from the inner circumferential surface of the housing 24, thereby limiting the transport distance.

Then, the support of the cross slide 52 in the state in which the angle divider 32 selected at 90 ° or 60 ° is inserted into the division groove 28b formed in the spiral bush 26, depending on the number of machining of the spiral groove 2a. When the fine adjustment handle 62 is penetrated and supported by the 54, the housing 24 is finely transferred along the cross slide 52 in the Y-axis direction, so that the wheel 16 is formed on the inner circumferential surface of the die bush 2. In contact with them, the spiral groove 2a of the appropriate depth can be machined.

After that, when the adjusting handle 42 is rotated in the forward direction while the wheel 16 is rotating, the spiral bush 26 and the collet 28 are rotated at the same time as they are linearly moved in the X-axis direction. On the inner circumferential surface of 2), one row of spiral grooves 2a are machined to an appropriate depth. Further, the collet 28 is reversed by rotating the adjusting handle again in the reverse direction, and then the spiral bush 26 and the collet 28 are repeatedly inserted after inserting the angle divider 32 adjusted to 90 ° into the dividing groove 26b. ) By reciprocating to process the spiral groove (2a) of several rows on the inner peripheral surface of the die bush (2) as shown in Figure 5 to prevent the rise of the slug during the press operation.

As described above, according to the spiral groove processing apparatus of the die bush according to the present invention, not only suppresses the rise of the slug during press working by forming a plurality of spiral grooves at an appropriate angle and depth on the inner peripheral surface of the die bush on which the slug is seated. In addition, it is possible to obtain a high quality product by solving the inferior processing quality defects caused by rising slugs.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

Claims (8)

In the processing apparatus for processing the spiral groove on the inner peripheral surface of the die bush installed in the mold, A column installed upright on one side of the bed; An air spindle rotatably mounted on the front surface of the column and for machining a spiral groove on an inner circumferential surface of the die bush; Forward and reverse means installed on the bed so as to be linearly spaced apart from the air spindle by a predetermined distance; A chuck mounted on a front portion of the forward and backward means for chucking the die bush; An adjusting means coupled to the rear portion of the forward and backward means to provide a forwarding force to the forward and backward means and to adjust a transport distance; A micro transfer means coupled to the lower side of the forward and backward means and configured to guide the forward and reverse means in a Y-axis direction; Spiral groove processing apparatus of the die bush, characterized in that consisting of fine adjustment means for adjusting the transport distance of the fine transfer means. According to claim 1, One end of the air spindle is fixed to the wheel for processing the spiral groove on the inner circumferential surface of the die bush, the wheel can be replaced with a suitable wheel according to the size of the spiral groove and / or the depth to be machined Spiral groove processing equipment of die bush. According to claim 1, The forward and reverse means is a spiral bush (spiral bush) which is installed to enable a linear transfer while rotating in the housing and a plurality of guide pins mounted on the upper surface and the collet fixed to the spiral bush Spiral groove processing apparatus of the die bush, characterized in that provided. 2. The spiral groove processing apparatus of claim 1, wherein the adjusting means is provided with an adjusting handle manually operated to rotate and feed the spiral bush. The spiral groove processing apparatus of claim 1, wherein the microfeed means comprises a cross slide for transporting the housing while guiding the housing in a direction perpendicular to the column. 2. The spiral groove processing apparatus of claim 1, wherein the fine adjustment means comprises a fine adjustment handle for adjusting a feeding distance of a housing to be finely conveyed along the cross slide. 5. The spiral groove processing apparatus of a die bush according to claim 1 or 4, wherein the adjustment means is a transfer cylinder operated by hydraulic and / or pneumatic pressure to automatically reciprocate the spiral bush. According to claim 3, The inner peripheral surface of the housing is provided with a limiting projection for limiting the stroke distance of the spiral bush and the collet, The collet outer peripheral surface in order to prevent the flow during transportation of the collet is provided with a flow preventing member Spiral groove processing apparatus of the bush again characterized in that provided.

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