JPS60102235A - Die - Google Patents

Abstract

PURPOSE:To obtain a die easy to assemble and capable of obtaining a product of high accuracy by attaching a punch to a punch plate keeping space and guiding the punch by a guide hole of a stripper having the same size as the working hole of a die. CONSTITUTION:In a press die in which a punch 18 held by a punch plate 22 is guided by the guide hole 19 of a stripper 20 and a material 17 placed on a die 24 having a working hole 23 is cut and bent, the punch 18 is attached to the punch plate 22 through space 29 to facilitate positioning of the punch 18, and at the same time, prevent generation of warping of the punch plate 22. The guide space 28 of the guide hole 19 of the stripper 20 that guides the punch 18 is made smaller than above-mentioned space 29 to improve the accuracy of working. Further, above-mentioned guide hole 19 is made to the same size as the working hole 23 of the die 24 to form them simultaneously by superposing the two.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to the structure of a press mold having a large number of processing parts such as cutting and bending.

Structure of conventional FLL and its problems FIG. 1 shows a product having a conventional multiple 11-4 cutting and bending process. The details of this mold are shown in FIG. The die 9 has a punch plate 1-7 and a die 9 having a hole 8 with a certain clearance with respect to the punch shape. It consists of a holding shaft τ1lj11 that holds 2 on the punch plates 1 and 2 so that it does not come out of the mold, and 11 (with respect to the punch holding shaft 11, the punch plate) holds t, '+ hole 6 is 0 to 0.01 The mold has a press-fit hole set to a relatively small size, and a key 12 is fixed thereto for correct rotation of the punch 2.

In such a configuration, as shown in FIG.
Since the punch 13 (50 to 200 mm) is press-fitted into the punch plate 14, the punch plates 1 and 14 tend to become sticky, making it impossible to ensure product accuracy.

As shown in Fig. 4, the stripper 16 and the die 16 have many irregularly shaped holes, so the stripper,
A large amount of die component manufacturing time is consumed. However, there are some problems that take up a lot of time, such as when taking a punch, fixing the ghee, and when the punch and die blades meet, and when assembling the mold.

Invention 1] Non-invention Q, this invention overcomes the above-mentioned drawbacks of the conventional technology, and its effects can be expected.

4'14 Aspects of the Invention The present invention provides a punch for IJtl cutting, a strike lever having a guide hole for guiding the punch, a punch plate 1 having a holding hole for holding the punch, and a punch cutting shape. A die that has a machined hole with a certain clearance between the punch and the punch.
Where to process the moon ☆; Guide for determining the position of part 111 and the punch itself using the striso guide hole lll1l1
The guide 111 and the stripper guide hole have an appropriate guide clearance of, for example, 0.03 mm or less, with respect to each other. Nogunchi holding 11Qlt
The punch plate holding hole and the punch plate holding hole each have a gap that is larger than the guide gap, which can greatly reduce part manufacturing time, and is extremely advantageous in terms of product accuracy and assembly as a whole.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 6 and 7. FIG. 6 shows the state before processing, and FIG. 7 shows the state during processing.

In Figure 6, for Nokunchiplay) 22.

The punch 18, which is not press-fitted but is attached with a certain clearance, enters the processing hole 23 of the die 24 while being guided by the guide hole 19 of the strip play 20, and the punch 17 is processed. It is something that

Note that the punch is always guided by the guide hole of the stripper both before and after processing, so processing is performed without the punch itself rotating.

] In Fig. 7, the punch 18V has a step 30 equivalent to the shear clearance and a step 31 equivalent to the cumulative plate thickness (L- is provided, so the punch guide hole 19 of the stripper 20 and the machined hole 23 of the die 24 have the same dimensions.

Therefore, as shown in FIG. 8, it is possible to simultaneously process the three main parts 23 of the wrist sonoper 20, including the punch guide hole 19 and the punch guide hole 24 of the wrist sonoper 20, as shown in FIG. -1 Effect of bright color (1) The punch is not press-fitted, but maintains a gap and punch brake.
1. 4", the punch plate's grip is gone / ζ0 (2) Since the punch is kited by a stripper, there is no need to use ghee to stop it from rotating.

(3) In the production of strippers and dies, the same process can be performed using a wire cutting machine, resulting in a significant reduction in production time.

(4) The blades of the punch and die were not easily aligned. Other than that, the product accuracy as a whole is 4, and the assembly is extremely advantageous.

In addition, the present invention is characterized by the fact that 3M1li is suitable not only for cutting and bending, but also for PI drilling and irregular-shaped drilling.

Figure 3 is a cross-sectional view of a conventional cutting and bending die; Figure 3 (d) is a partial cross-section 1-m showing the warping of the punch plate 1 due to the conventional punch fixing method; Figures 4 a and b are views of a conventional stripper. and a plan view of the die, FIG. 6 shows one embodiment 1+ of the present invention.
11 is an enlarged sectional view of a cutting and bending mold in an embodiment of the present invention, FIG. 6 is a sectional view of a cutting and bending mold in an embodiment of the present invention before processing, and FIG. 7 is a cutting and bending die in an embodiment of the present invention. FIG. 8 is an enlarged cross-sectional view of the mold crab and FIG. 8 is a cross-sectional view showing the simultaneous machining of the stripper and die by wire-cut discharge.

2.11, 13.18...Punch, completed, 14゜2
2...Punch play 1-112...Key,
6,16°20...-stripper, 9. 161
24... Gui.

1.1γ...Material, 3,4...Gap between punch and stripper, 21...Punch play 1□ Holding hole, 10.25...Punch processing'/LQj"11
1st part, 19・ Stripper tonoid hole% 26・ ・
・Punch guide) 咄F5B, 2y ・Punch Ho 11
axis) X, 8 + 23.36 +43, 49...
Machining hole of die, 28...St'J collar guide clearance, 6129... Clearance between punch holding Ili+l+ and punch play 1/holding hole, 3o-... Shear clearance level difference, 31... Plain (step equivalent to 4 plate thickness, 32... Wire cut flattened) Jll] January]
1 tweet.

Name of agent Patent attorney Satoshi Nakao JJ and 1 other famous confectioners Figure 11 (α) (b,) 2 Figure 3 Figure 4 (α) 1) (b Figure 5 1β Figure 6 Consent Figure 7 8 Figure

Claims (1)

[Scope of Claims] A punch for processing a material, a stripper having a guide hole for guiding the punch, and a punch plate having a holding hole for holding the punch. Constant clearance k'jE for punching shape
The guide hole of the stripper and the machining hole of the die have the same size, and the punch has a tip portion for machining the moon and a die that has a position of the punch itself. The shaft part consists of a guide shaft part for defining the stripper guide hole, and a retainer for holding the punch on the punch plate to prevent it from falling out of the mold. 1) A mold having a guide gap of 1) or more than 11 guide gap between the punch holding shaft and the punch plate holding hole.