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Additive manufacturing insert reinforced plate forming soft die structure and manufacturing method thereof

A technology of additive manufacturing and manufacturing method, which is applied in the direction of manufacturing tools, additive processing, casting and molding equipment, etc., can solve the problems of poor fit and effect of low-melting alloys, and achieves low mold manufacturing cost and forming accuracy. High, improve the effect of surface quality and dimensional accuracy

Pending Publication Date: 2021-07-23
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the shape of the steel rod is difficult to match the shape of the workpiece, and the fit between the steel rod and the low-melting point alloy of the module is not good, the effect of practical application is poor.

Method used

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  • Additive manufacturing insert reinforced plate forming soft die structure and manufacturing method thereof
  • Additive manufacturing insert reinforced plate forming soft die structure and manufacturing method thereof
  • Additive manufacturing insert reinforced plate forming soft die structure and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] This embodiment discloses a sheet metal forming soft mold structure reinforced by additive manufacturing inserts. The overall structure of the soft mold adopts the stamping die structure on the press, see Figure 4 , the mold presses the strip-shaped blank 3 into a "V" shape. The thickness of the slab blank 3 is 2 mm, the width is 30 mm, and the length is 100 mm. The material is Q235. See Table 1 for other parameters.

[0046] Table 1 Material parameter table

[0047]

[0048] First, the stamping die structure is designed according to the geometry of the workpiece, including the upper module 1, the lower module 4, the lower template 7, the guide post 8, the guide sleeve 9 and the upper template 10.

[0049] The upper module 1 is fixed on the lower surface of the upper template 10 . The lower module 4 is fixed on the upper surface of the lower template 7 . Specifically, the upper module 1 is fixed on the lower surface of the upper template 10 by a plurality of scre...

Embodiment 2

[0061] This embodiment discloses a sheet metal forming soft mold structure reinforced by additive manufacturing inserts. The overall structure of the soft mold adopts the stamping die structure on the press, see Figure 10 , the structure of the soft mold for sheet metal forming is a mold for stamping "T-shaped" parts, in which ZA27 is selected for the zinc-based alloy; AL6061 is selected for the plate blank 3; DP1000 is selected for the steel insert 2. The material parameters are listed in Table 2.

[0062] Table 2 Material parameter list

[0063]

[0064]

[0065] First, the stamping die structure is designed according to the geometry of the workpiece, including the upper module 1, the lower module 4, the lower template 7, the guide post 8, the guide sleeve 9 and the upper template 10.

[0066] The upper module 1 is fixed on the lower surface of the upper template 10 . The lower module 4 is fixed on the upper surface of the lower template 7 . Specifically, the upper...

Embodiment 3

[0075] This embodiment discloses a method for manufacturing a sheet metal forming soft mold structure reinforced by additive manufacturing inserts, see Figure 1 to Figure 3 , including the following steps:

[0076] 1) Establish the three-dimensional model of the stamped sheet metal parts that need to be produced, that is, the CAD model of the sheet metal part.

[0077] 2) Carry out rapid die design, import the 3D model of the stamped sheet metal part into the forming analysis software, input the boundary conditions and complete the pre-processing of the finite element analysis, submit the calculation, and perform numerical simulation analysis on the stamping forming process. During the simulation, the upper module 1 and the lower module 4 are set as deformable bodies according to the actual material for calculation.

[0078] 3) Analyze the stamping forming simulation results, and extract the Mises stress distribution nephogram of upper module 1 and lower module 4 at the bott...

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Abstract

The invention discloses an additive manufacturing insert reinforced plate forming soft die structure and a manufacturing method thereof. The additive manufacturing insert reinforced plate forming soft die structure comprises an upper die block, a lower die block, a lower die plate, a guide column, a guide sleeve and an upper die plate; the upper die block is fixed on the upper die plate, and the lower die block is fixed on the lower die plate; matrixes of the upper die block and the lower die block are made of low-melting-point alloy; working faces of the upper die block and the lower die block can be matched with each other according to the shape of a stamping sheet metal part needing to be manufactured, wherein inserts are embedded in the outwards-protruding edge angles of the working faces of the upper die block and / or the lower die block, and the inserts are manufactured through additive manufacturing. According to the additive manufacturing insert reinforced plate forming soft die structure and the manufacturing method, rapid and economical forming of the complex sheet metal part can be achieved, and meanwhile the surface quality and the size precision of a workpiece are high; the steel inserts are manufactured through the additive manufacturing, the matching degree of the working surfaces and a stamping part and the bonding strength of the working surfaces and the matrixes of the die blocks are high, and the inserts are flexible in design; the low-melting-point alloy die blocks and the insert material can be recycled, the die cost is low, and the manufacturing period is short.

Description

technical field [0001] The invention belongs to the field of sheet metal forming, and in particular relates to a sheet material forming soft mold structure reinforced by additive manufacturing inserts and a manufacturing method thereof. Background technique [0002] Stamping is currently the most widely used sheet metal forming method, especially in mass production of automobiles and home appliances. However, due to the need for special steel molds in the traditional stamping process, there are problems such as high manufacturing costs and long development cycles in the production of single-piece and small-to-medium batch sheet metal parts such as user customization and product development. How to achieve rapid and economical forming of sheet metal parts has always been an important direction of efforts in the manufacturing field. Since the 1980s, people have successively developed rapid mold or moldless sheet metal forming technologies such as soft mold forming, local heat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D22/02B21D37/12B22C9/02B22C9/22B33Y80/00G06F30/17G06F111/10G06F113/10G06F113/22G06F119/14
CPCB21D37/12B21D22/02B22C9/02B22C9/22B33Y80/00G06F30/17G06F2111/10G06F2113/10G06F2113/22G06F2119/14
Inventor 温彤刘龙琴周银陈霞唐浩兴曾川航
Owner CHONGQING UNIV