CN202779355U - Combination tool for forming of long box-like workpieces - Google Patents

Abstract

The combined tooling for forming high box-shaped parts mainly solves the technical problems of low production efficiency and unstable product quality in the prior art that requires three times of forward stretching. It consists of a pre-sequence positive stretching die and a post-sequence reverse stretching die. When in use, the pre-sequence positive stretching die and the post-sequence reverse stretching die are fixed on the mechanical equipment, and the stretched part is first stretched in the first process, and then transferred to the reverse stretch in the second process. Promptly make the finished product of high box shape. The utility model fully considers the transition between the bottom and the wall of the high box-shaped part and the friction resistance and bending resistance when the metal material flows into the die area, so the die and the punch are selected. A suitable angle is obtained, and one process is reduced. It has the characteristics of simple and reasonable structure, high production efficiency and guaranteed product quality. It can be widely used in the technical field of forming high box-shaped parts, especially rectangular high box-shaped parts.

Description

High box-shaped parts forming combination tooling

technical field

The utility model relates to a forming combined tooling, in particular to a forming combined tooling for high box-shaped parts. The invention belongs to the technical field of mechanical processing stretch forming application.

Background technique

Stretch forming of conventional tall box-shaped parts requires three forward stretches. Due to the problem of the transfer between the bottom and the wall of the high box-shaped part and the friction resistance and bending resistance when the metal material flows into the die area during the stretching process is not solved well enough, there is a high scrap rate and low production efficiency. The problem that the production cost of the product is high.

Contents of the invention

The utility model is aimed at solving the above problems, and provides a high box-shaped part forming combination that is improved from the existing three times of forward stretching to one forward stretching and one reverse stretching. tooling.

In order to achieve the above object, the utility model adopts the following technical scheme: the high box-shaped component forming combined tooling is composed of a pre-sequence positive stretching die and a post-sequence reverse stretching die. The preamble positive drawing die includes punch A (1) and die A (3). Die A (3) is installed on the lower template A (7) through the backing plate (5). A hole is opened at the center of the lower template A (7), and a push rod A (6) is arranged in the hole, and a top plate A (4) is installed on the push rod A (6). There is a gap between the blankholder A (2) at the lower part of the punch A (1) and the die A (3).

Subsequent reverse stretching dies include punch B (8) and die B (10). Die B (10) is installed on the lower formwork B (13). There is a hole in the center of the lower template B (13), and a push rod B (12) is arranged in the hole, and a top plate B (11) is installed on the push rod B (12). There is a gap between the blank holder B (9) at the lower part of the punch B (8) and the die B (10).

When in use, the pre-sequence positive stretching die and the post-sequence reverse stretching die are fixed on the mechanical equipment, and the stretched part is first stretched in the first process, and then transferred to the reverse stretch in the second process. Promptly make the finished product of high box shape.

The utility model solves the unreasonable structure of the tooling in the prior art and the production efficiency by improving the prior art that needs three times of forward stretching into a tooling of one forward stretching and one reverse stretching. Low, technical problems of unstable product quality. The utility model fully considers the transition between the bottom and the wall of the high box-shaped part and the friction resistance and bending resistance when the metal material flows into the die area, so the die and the punch are selected. A suitable angle is established, and one process is reduced, which better solves the technical problem that the stretched parts are easy to break. It has the characteristics of simple and reasonable structure, high production efficiency and guaranteed product quality. It can be widely used in the technical field of forming high box-shaped parts, especially rectangular high box-shaped parts.

Description of drawings

Fig. 1 is the structural schematic diagram of the preorder positive stretching die of the present utility model.

Fig. 2 is a structural schematic diagram of the subsequent reverse stretching die of the utility model.

Detailed ways

Example

The combined tooling for forming high box-shaped parts is composed of two parts: the pre-sequence positive stretching die and the post-sequence reverse stretching die, as shown in Figure 1 and Figure 2.

Referring to Fig. 1, the preamble positive stretching die includes a punch A1 and a die A3. Die A3 is installed on the lower formwork A7 by backing plate 5. There is a hole in the center position of the lower formwork A7, and a push rod A6 is arranged in the hole, and a top plate A4 is installed on the push rod A6. There is a gap between the blank holder A2 on the lower part of the punch A1 and the die A3.

Referring to Fig. 2, the post-order reverse stretching mold includes a punch B8 and a die B10. Die B10 is installed on the lower formwork B13. There is a hole in the center of the lower template B13, and a push rod B12 is arranged in the hole, and a top plate B11 is installed on the push rod B12. There is a gap between the blank holder B9 at the bottom of the punch B8 and the die B10.

The transition zone from the outer edge of the bottom of the punch A1 in the above-mentioned pre-order positive stretching die to the stretching direction is made at an angle of 45°, which facilitates the flow of metal during reverse stretching in the subsequent process and increases the stretching safety factor. Above-mentioned die A3 is conical die, and its taper angle is 30 °. In this way, from the beginning of stretching, the flange part of the stretching part is formed into a dish shape, which is convenient for metal flow, reduces frictional resistance and bending deformation resistance, and improves the stretching insurance factor.

The above-mentioned post-order reverse stretching die is made into a blank holder B9 with a 45° transition profile, and the working profile of the blank holder B9 is bonded to the die B10 according to the material thickness gap. Such blank holder B9 increases the blank holder area, effectively controls the flow of metal materials into the die area, reduces frictional resistance and bending resistance, and thus increases the tensile insurance factor.

Claims (4)

1. one kind high box part moulding assembled tool, it is characterized in that: it is comprised of the positive drawing die of preorder and postorder reverse-drawing mould, the positive drawing die of preorder, comprise punch A(1), die A(3), die A(3) be installed in lower bolster A(7 by backing plate (5)) on, lower bolster A(7) the center have a hole, be provided with push rod A(6 in the hole), push rod A(6) the upper top board A(4 that installs), above-mentioned punch A(1) the blank holder A(2 of bottom) with die A(3) have a gap; Postorder reverse-drawing mould, comprise punch B(8), die B(10), die B(10) be installed in lower bolster B(13) on, lower bolster B(13) center has a hole, be provided with push rod B(12 in the hole), push rod B(12) the upper top board B(11 that installs), above-mentioned punch B(8) the blank holder B(9 of bottom) with die B(10) have a gap.

2. high box part moulding assembled tool as claimed in claim 1 is characterized in that: the punch A(1 in the positive drawing die of above-mentioned preorder) 45° angle is made to the draw direction transition region in the outer of bottom.

3. high box part moulding assembled tool as claimed in claim 1 is characterized in that: above-mentioned die A(3) be taper matrix, its cone angle is 30 °.

4. high box part moulding assembled tool as claimed in claim 1 is characterized in that: above-mentioned postorder reverse-drawing mould, make the blank holder B(9 of transition profile at 45 °), blank holder B(9) working surface and die B(10) press the material thickness gap and fit.

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