Side-wall forming die and side-wall forming process

A technology of forming mold and forming process, applied in the field of car body, can solve problems such as aluminum plate cracking, and achieve the effect of avoiding cracking

Active Publication Date: 2018-10-19
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a side wall forming mold and a side wall forming process to solve the deficiencies in the prior art, and it can avoid the problem of cracking when the integrally formed aluminum plate side wall is formed

Method used

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  • Side-wall forming die and side-wall forming process
  • Side-wall forming die and side-wall forming process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The embodiment of the present invention provides a side wall forming mold, the side wall forming mold includes an upper mold body 1, a lower mold base 2, a punch 3 arranged on the lower mold base 2, and a compensation device movably arranged on the upper mold body 1 The die 4, the inner binder ring 5 that is movably arranged inside the punch 3 and matches the binder surface of the compensation die 4, the outer binder ring 6 that is movably arranged on the outside of the punch 3; the inner binder The ring 5 is equipped with an inner second-stage ejector pin 7, and the outer blank holder ring 6 is equipped with an outer second-stage ejector pin 8; wherein: the length of the inner second-stage ejector pin 7 is shorter than the length of the outer second-stage ejector pin 8, and in the mold In the closed state, the lower end surface of the inner secondary ejector rod 7 is higher than the lower end surface of the outer secondary ejector rod 8 by Δh; the upper mold body 1 is a...

Embodiment 2

[0055] This embodiment provides a side wall forming process, wherein: the above side wall forming die is used for side wall drawing and forming. In this embodiment, the inner binder ring 5 is only rigidly limited by the lower mold base 2, so that The inner blank holder 5 has only one limit position, and during specific implementation, the side enclosure forming process is as follows: Figure 8 shown, including the following steps:

[0056] Step S10: First, the upper mold body 1 and the punch 3 are in the mold-opening state; then, the ejector rod 10 of the machine tool moves upward, and the ejector rod 10 of the machine tool first contacts the outer secondary ejector rod 8 and lifts up 6, and then the ejector rod 10 of the machine tool moves up again. Contact the inner secondary push rod 7 and jack up the inner binder ring 5, so that the inner binder ring 5 and the outer binder ring 6 move to the same height. At this time, the inner binder ring 5 and the upper surface of the ou...

Embodiment 3

[0067] This embodiment provides a side wall forming process, wherein: the above side wall forming die is used for side wall drawing and forming. The difference between this embodiment and Embodiment 2 is that in this embodiment, the inner binder ring 5 At the same time, the lower die nitrogen spring and the lower die seat 2 are used to limit the position respectively. At this time, it is required to set the lower die nitrogen spring on the lower die to provide the driving force and pressure source; set the stroke and force of the lower die nitrogen spring, and the lower die nitrogen spring The active force of the inner binder ring 5 can be used as the pressure source of the inner binder ring 5, and the inner binder ring 5 is limited during the mold clamping process, and the stroke of the lower mold nitrogen gas spring can be used as the elastic stroke of the inner binder ring 5, and the lower mold seat 2 pairs of inner blank holders 5 provide rigid spacing. During the mold clo...

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Abstract

The invention relates to the technical field of car bodies, in particular to a side-wall forming die and a side-wall forming process. The side-wall forming die comprises an upper die body, a lower dieseat, a convex die, a compensation concave die, an inner blank holder and an outer blank holder, wherein the convex die is arranged on the lower die seat; the compensation concave die is movably arranged on the upper die body; the inner blank holder is movably arranged inside the convex die and matched with the pressing surface of the compensation concave die; the outer blank holder is movably arranged on the outer side of the convex die; inner secondary ejector rods are arranged on the inner blank holder; outer secondary ejector rods are arranged on the outer blank holder; the length of eachinner secondary ejector rod is less than that of each outer secondary ejector rod; and in the die closing state, the lower end surface of the inner secondary ejector rod is delta h higher than that of the outer secondary ejector rod. By adoption of the side-wall forming die and the side-wall forming process provided by the invention, the drawing depth of a side-wall door opening can be reduced, and the problem that an integrally-formed aluminum plate cracks in the side-wall forming course can be avoided.

Description

technical field [0001] The invention belongs to the technical field of car bodies, in particular to a side wall forming die and a side wall forming process. Background technique [0002] With the vigorous development of the vehicle industry, the exterior shape of the vehicle is also changing with the improvement of consumers' aesthetic requirements. The exterior shape of the vehicle has more and more protruding ridges, smaller ridge R angles, and more complex surface changes. Wait. At the same time, with the development of lightweight vehicles and new energy vehicles, major OEMs are researching all-aluminum bodies or increasing the application ratio of aluminum alloys in the body. New requirements for vehicle products such as the above have made the manufacturability of outer cover products such as side panels worse, making manufacturing more and more difficult, and even making parts difficult to form. For example, the upper edge profile of the side wall and the front and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D37/10B21D22/22B21D53/88
CPCB21D22/22B21D37/10B21D53/88
Inventor 黄永生桂方亮张稳定王肖英韩永志刘程崔礼春
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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