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Multi-point male die liquid-filling drawing forming device and method for plate

A technology of liquid-filled deep drawing and punching, which is applied in the field of forming devices for thin-walled, complex curved surface, and deep cavity plate parts. The effect of short manufacturing cycle and high flexibility

Active Publication Date: 2014-06-18
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The purpose of the present invention is to combine the technical advantages of multi-point forming and liquid-filled deep-drawing forming to provide a multi-point punch liquid-filled deep-drawing forming device and method to solve the forming difficulties of parts with complex curved surfaces, thin walls and deep cavities question

Method used

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  • Multi-point male die liquid-filling drawing forming device and method for plate
  • Multi-point male die liquid-filling drawing forming device and method for plate
  • Multi-point male die liquid-filling drawing forming device and method for plate

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specific Embodiment approach 1

[0042] Specific implementation mode one: as Figure 1 to Figure 7 As shown, a sheet material multi-point punch liquid-filled deep drawing device in this embodiment includes a die 3, a blank holder 5, an elastic backing plate 7 and a metal guard plate 8, and the device also includes a multi-point punch Die 1 and a plurality of linear drive devices 15; the multi-point punch 1 and blankholder 5 are all arranged directly above the die 3, the multi-point punch 1 includes a punch body 16 and a plurality of small punches 2, A plurality of small punches 2 are vertically arranged independently of each other and form a punch module. The punch body 16 is positioned directly above the plurality of small punches 2. The corresponding position of the punch body 16 is provided with Multiple through holes, the quantity of the through holes is consistent with the quantity of the small punches 2, the upper ends of the multiple small punches 2 correspond to the multiple through holes of the punch...

specific Embodiment approach 2

[0044] Specific implementation mode two: combination Figure 1 to Figure 7 Note that the elastic backing plate 7 in this embodiment is a polyurethane plate or a rubber plate; the metal guard plate 8 is a low carbon steel plate, a stainless steel plate or an aluminum alloy plate. The thickness of the metal guard plate 8 and the elastic backing plate 7 can be selected according to the forming needs. The undisclosed technical features in this embodiment are the same as those in the first embodiment.

specific Embodiment approach 3

[0045] Specific implementation mode three: combination figure 1 , figure 2 To illustrate, the method of using the device described in Embodiment 1 or Embodiment 2 of this embodiment to realize the forming method of multi-point punch liquid-filled deep drawing of a plate, the method includes the following steps (liquid-filled deep drawing)

[0046] Step 1: First, according to the shape of the part 9, adjust the heights of the plurality of small punches 2 respectively to realize the outer contour configuration of the multi-point punch 1, and then place the slabs 6 to be formed on the upper end surface of the die 3 in sequence , elastic backing plate 7 and metal guard plate 8;

[0047] Step 2: The blank holder 5 is driven downward by the blank holder slider of the press to close the mold with the die 3, and then the multi-point punch 1 is driven downward by the deep drawing slider of the press and applied to the slab 6 to be formed. 10-1000t drawing force; at the same time, th...

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Abstract

The invention discloses a multi-point male die liquid-filling drawing forming device and a multi-point male die liquid-filling drawing forming method for a plate, relates to a device and a method for forming thin-walled curved plate parts, and aims to solve the problem of difficulty in forming of thin-walled and deep-cavity parts with complicated curved surfaces. A plurality of small punches are independently arranged; the upper ends of the small punches penetrate into through holes in a male die body; the upper end of each small punch is connected with a linear driving device; a female die is a semi-closed cavity of which the upper end is opened and the lower end is closed; an elastic base plate and a metal protection plate are superposed on the upper end surface of the female die from bottom to top. The heights of the small punches are adjusted to realize the construction of an outer contour of a multi-point male die; a to-be-formed plate blank, the elastic base plate and the metal protection plate are sequentially arranged on the upper end surface of the female die; a blank holder moves down to be assembled with the female die, and the multi-point male die moves down and applies a drawing force to the to-be-formed plate blank; meanwhile, a liquid medium is filled into an inner cavity of the female by the aid of a pressurizing system until drawing is completed to obtain parts of a required shape. The device and the method are used for forming the plate, and the thin-walled and deep-cavity parts with the complicated curved surfaces can be formed.

Description

technical field [0001] The invention relates to a deep-drawing forming device and method for a plate, in particular to a forming device and method for a plate part with complex curved surface, thin wall and deep cavity. Background technique [0002] With the development of aerospace, aviation and automobile industries, traditional plate parts are moving towards complex curved surfaces (space free-form surfaces) and thin walls (the relative thickness of the slab t / D<0.5%, where t represents the thickness of the slab, and D represents the diameter of the slab) , deep cavity (the relative height of the part h / d>1, where h represents the height of the part, and d represents the opening diameter of the part) and other trends, put forward higher requirements for the forming technology. Traditional manufacturing technology has problems such as high mold cost, many forming passes, long manufacturing cycle, and poor formability, which cannot meet the needs of the development of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D26/021B21D26/031
Inventor 苑世剑刘伟徐永超
Owner HARBIN INST OF TECH
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