JPH03216228A - Form rolling die - Google Patents

Abstract

PURPOSE:To reduce form rolling manhour by providing on an upper die a movable part having a work positioning part and providing on a lower die a fixing part having a punch part for working a work. CONSTITUTION:In a form rolling die 10 composed of the upper die 11 and the lower die 12, both dies are connected by stopper pins 13 and screws 14. A floating shank 16 on an subbase 15 making the base of the upper die 11 and an upper die 17 on the lower side are formed integrally and an lower die 19 is fitted to a lower subbase 18 making the base of the lower die 12. A pin 1 is positioned between the upper die 17 and the lower die 19, the fall of the upper die 17 rotates the pin 1 and a mark is engraved by a mark punch 20 of the die 19 along the periphery of the pin. In this way, at the same time that the rolling die 10 form-rolls a groove part 3, a chamfering part 4 and a marking part 2 of the pin 1, and pin 1 can be cut and the working manhour can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a rolling die that performs rolling using a die.

[Conventional technology]

When creating a groove of a certain shape around a round bar material or chamfering it, if the shape is complicated, turning is done using an automatic lathe, etc. If it is a simple shape, rolling using a rolling roll is used. It was generally done through fabrication.

That is, in the case of turning, a cutting tool is used to perform cutting into a certain shape, and in the case of rolling, a certain shape is formed by passing the material between rollers.

[Problem to be solved by the invention]

However, in the case of cutting, as is well known, the cutting time takes a considerable amount of time, and the cutting process generates chips and particles, which are not only extremely troublesome to dispose of, but also cause an increase in costs.

In addition, in the case of rolling, rolling rolls are generally difficult to process because they are made of hard materials (e.g., carbide), making it difficult to manufacture the rolls, and because pressure is applied to the rolls, the parts to be processed are small. However, it has major drawbacks such as the large size of the device.

On the other hand, regarding molds, although the processing methods such as punching, bending, and drawing have been well known in the past, there are no known techniques for methods such as rolling the material.

An object of the present invention is to provide a rolling die that enables high-precision processing at low cost by performing rolling using a die.

[Means to solve the problem]

The gist of the present invention for achieving the above object is to provide a movable part having a positioning part for positioning the workpiece in order to roll the workpiece to the upper die, and a fixed part having a punch part for processing the workpiece to the lower die. It is characterized by having a section.

[Effect]

According to the above configuration, the workpiece to be machined is supplied to the positioning section, the upper die is lowered and the workpiece is passed through the punch section of the lower die, thereby rolling the workpiece, and finally the workpiece is carried out from the die. It was created by

〔Example〕 Embodiments of the present invention will be described in detail below based on the drawings.

Fig. 1 is a sectional view of a mold according to the present invention, Fig. 2 is a sectional view taken along the line AA in Fig. 1, Fig. 3 is a sectional view taken along BB in Fig. 2, and Fig. 4 is a sectional view of the upper die and the lower die. Explanatory diagram for explaining the shape of
The figure is a perspective view of the lower die, and Figure 6 shows the workpiece to be processed.
A) shows a side view, and (opening) shows a C-C sectional view.

First, the shape of the workpiece will be explained using Figure 5. l is a pin, which will be explained using an example of a piercing bottle as a workpiece. 2 is an engraved part where, for example, the material name K1B or the manufacturer's name is engraved. 3 is the groove where the locking tool engages. 4 has a chamfered part that is designed to be easily inserted into the hole in the earlobe. Since the pin 1 is processed using a rolling die described later, the groove portion 3 and the chamfered portion 4 are processed to have a uniform shape over the entire circumference, and the stamped portion 2 is formed in a concave shape along the circumference.

Next, the rolling die will be explained using FIGS. 1 to 5.

IO is a rolling die consisting of an upper die 11 and a lower die 12. The upper mold 11 and the lower mold 12 are connected by at least two stopper pins 13 and screws l4. The upper mold 11 is integrally formed with a floating shank 16 above an upper sub 15 which is to serve as a base, and an upper die 17 below. Next, in the lower mold 12, a lower die 19 is fitted into a lower sub 18 which serves as a base of the lower mold. Upper die 17 and lower die 19
The bottle 1 shown in FIG. 6 is positioned between the upper die I7 and the pin 1 rotates between the upper die 17 and the lower die I9, and a mark is made by the mark punch 20 in the middle of the lower die I9. is engraved along the circumference as shown in Figure 6 (opening). The rolling die 10 shown in FIG. 1 can simultaneously roll the groove 3, chamfer 4, and stamped part 2 of the pin 1 shown in FIG. 6 and cut the pin 1.

FIG. 2 shows a cross-sectional view taken along line A-A, but the upper die l shown in FIG.
7 and the lower die 19 have a wire die 22 and a knockout 23 held by a fixed frame 21 on the front surface thereof. Also upper die l7
The shape between the pin 1 and the lower die 19, as shown in FIG. 4, matches the shape of the pin 1 in FIG. 6. The wire 24 is inserted from the direction of the arrow 27 of the two center lines 25 and 26 in FIG. When the upper die 17 comes down in the direction of the arrow 28, the bottle 1 is processed between the upper die 17 and the lower die 19, and at the same time,
The knockout 23 pushed by the upper die 17 descends in the direction of the arrow 29 and cuts the wire 24 with the width of the knockout 23.

FIG. 7 is a partial sectional view showing details of the upper die and the lower die. The upper die 17 has a positioning protrusion 30 for holding the pin 1, and the cut bottle 1 is pushed out and held by the positioning protrusion 30.

Further, the upper die 17 and the lower die 19 have protrusions 31 and 32 for forming the groove portion 3 of the pin 1, and more specifically, inclined portions 33 and 34 are formed so as to allow gradual processing. ing. That is, as shown in FIG.
A protrusion 38 is also formed at a location where the protrusion 32 corresponds to the chamfered portion 4, and a mark punch 20 is fitted into the intermediate portion of the lower die 19. If you press the blank of bottle 1 from above as shown by arrow 37 and rotate it,
Groove portions 3, chamfered portions 4, and stamped portions 2 are formed along the projections 32 and 38, and the product is carried out in the direction of arrow 36.

Next, the processing method will be explained in detail using FIGS. 8 to 12.

FIG. 8 is a cross-sectional view showing the cutting process, in which the wire 24 is cut into the wire die 2.
It passes through the hole 22a of No. 2 and is inserted into the knockout 23. As the upper die 17 is lowered in the direction of arrow 28, the knockout 23 is also lowered in the direction of arrow 29, and the knockout 2
The wire rod 24 is cut in a punch-die relationship formed between the wire rod 3 and the wire die 22 to form a blank for the bottle 1.

Figure 9 is a cross-sectional view showing the feeding process, and shows the knockout 2
When the wire rod 24 is sent forward with the pin 3 returned to its original position, the blank of the pin 1 is pushed out in the direction of the lower die 19, and as shown in FIG.
0, and a new wire 24 is set in the knockout 23. Figure 11 is a partial cross-sectional view showing the rolling process, where the upper die l
7 is lowered in the direction of the arrow 28, the pin 1 rolls between the upper die 17 and the lower die 19, and the protrusions 3l formed on the upper die 17 and the lower die 19, the inclined portion 33 at the beginning of the 32,
34, the groove part 3 and the chamfered part 4 are rolled, and the marking part 2 is further formed by the mark punch 20 located in the middle of the lower die l9.
is engraved.

FIG. 12 is a partial sectional view showing the unloading process, and when the upper die 17 is further lowered in the direction of arrow 28, the processing of the grooves and markings is completed. As a result, a stepped portion 3 is formed below the lower die 19.
At point 5, it falls in the direction of arrow 36 and is carried out, completing all machining of pin 1. By the way, in FIG. 11, only the rolling process of the pin 1 has been described, but by lowering the upper die 17, cutting by the knockout 23 shown in FIG. 8 can be performed simultaneously, and the lowering of the pin 1 is completed. At the same time as the upper die 17 rises, the blank of the cut pin 1 is pushed out and set on the positioning convex portion 30 of the upper die 17, so that machining can be performed continuously.

Note that the present application is not limited to the above embodiments, and various changes can be made without changing the gist. For example, changes in workpieces, changes in molds in small areas, etc. are included in this application.

〔Effect of the invention〕

As described above, according to the present invention, the rolling process can be performed using a die, so there is no need for complicated and large-scale equipment, and the process can be performed simply by changing the press machine and die that are commonly used. In addition, other processes (such as cutting) can be performed simultaneously or continuously, which not only greatly contributes to cost reduction, but also enables transfer with a press machine, which is completely unimaginable for conventional molds. The effects of this application, such as enabling fabrication processing, are significant.

[Brief explanation of drawings]

Fig. 1 is a cutaway view of a mold according to the present invention, Fig. 2 is a sectional view taken along line A-A in Fig. 1, Fig. 3 is a sectional view taken along line B-B in Fig. 2, and Fig. 4 is an upper die and a lower die. Explanatory diagram for explaining the shape of
The figure is a perspective view of the lower die, Figure 6 is a side view of the workpiece, (A) is a side view, and Figure 7 is a detailed partial sectional view of the upper die and lower die. Figures 8 to 12 are diagrams for explaining the machining process. Figure 8 is a cutting process, Figure 9 is a sectional view showing a feeding process, Figure 10 is a positioning process, and Figure 11 is a cross-sectional view showing a feeding process.
The figure is a partial sectional view showing the rolling process, and FIG. 12 is a partial sectional view showing the unloading process. 1-Bin, 2-・1 stamped part, 3-1 groove, 10-rolling mold, l1-・1 upper mold, 12-・1 lower mold, 15-1 upper sub, l
7 one upper die, 18 one lower sub, 19 one lower die, 20-・-
Mark punch, 22--wire die, 23-knockout, 24-wire rod, 30--positioning convex portion, 31, 32-
・Protrusion, 33, 34 -- Slanted portion, 35・Stepped portion. Figure 1 Figure 2 Figure 5 Figure 6 Figure 8

Claims (2)

[Claims] (1) It has an upper mold and a lower mold, the upper mold has a movable part for rolling the work, the movable part has a positioning part for positioning the work, and the lower mold has a movable part for rolling the work. A rolling mold characterized in that the mold has a fixing part for rolling the workpiece, and the external fixing part has a punch part for processing the workpiece and a delivery part for carrying out the workpiece. . (2) The rolling die according to claim 1, further comprising a cutting die for cutting the workpiece to a fixed size.