CN105014305A - Method for shaping annular thin plate with bending edge - Google Patents

Abstract

The invention provides a method for shaping an annular thin plate with a bending edge. The method is characterized by including the following steps: a square panel veneer is blanked through a steel plate shearer; the square panel veneer is tailored, and an annular unfolding material is manufactured according to the size requirement of a finished product; heat treatment is carried out on the annular unfolding material; the upper surface and the lower surface of the annular unfolding material are both coated with a lubricating agent; the annular unfolding material is arranged in an extension die, extension shaping is carried out, and the annular unfolding material is extended to form an annular piece with a U-shaped cross section; the lubricating agent on the surface of the annular piece with the U-shaped cross section is removed; and an asbestos washer is installed in a U-shaped groove of the annular piece with the U-shaped cross section, and the parts, higher than the asbestos washer, on the two sides of the U-shaped groove are beaten, so that the two sides are bent to be attached to the upper surface of the asbestos washer, and the annular thin plate with the bending edge is finally shaped.

Description

A kind of manufacturing process of Thin ring plate of crimp

Technical field

The invention belongs to field of machining, relate to sheet parts forming process.

Background technology

The Thin ring plate of crimp is generally circular at present, cross section be U-shaped and have two crimps to be formed on U-shaped top stretch out edge, as shown in Figures 1 and 2.

Thin ring plate for this type of crimp is extended part forming, the general method of extending of general employing, but some part adopts the method to receive the restriction of the performance such as limit elongation and intensity hardness of material itself, can not be shaped out, even if the method for repeatedly extending can be adopted to be shaped such part, the problem that qualification rate is lower, and part periphery also may exist break, skid wire, the forming defects such as wrinkling, these part features make its shaping difficulty larger, are also that Conventional processing methods can not realize.

Summary of the invention

The technical problem to be solved in the present invention:

The part periphery that traditional forming methods brings also exist break, the problem of skid wire, the forming defects such as wrinkling.

Technical scheme of the present invention:

The invention provides a kind of manufacturing process of Thin ring plate of crimp, it is characterized in that, comprise the following steps:

Square plate under utilizing plate shearing machine;

Square shaped plate carries out cutting, requires to make annular spread material according to finished size;

Annular spread material is heat-treated, reduces hardness and the intensity of annular spread material, improve the success rate that annular spread material is extended;

Annular spread material upper and lower surface all applies lubricant, the frictional force reducing annular spread material surface and extend between mould die body; Part raw material are excessively thin, and be subject to the impact of the frictional force between material surface and die body when directly extending, part there will be crackle, be coated with lubricant (can be blue or green paint) and piece surface can be made smooth, reduce the frictional force between material surface and die body greatly.

Annular spread material being placed in extends in mould, carries out shaping of extending, and annular spread material is extended into the annular element that cross section is U-shaped;

Removal cross section is the lubricant on the annular element surface of U-shaped;

Asbestos washer is arranged in U-lag that cross section is the annular element of U-shaped, the part of U-lag both sides higher than asbestos washer is beaten, make it bendingly fit on the upper surface of asbestos washer, the Thin ring plate part of crimp is finally shaped.

Here U-lag both sides fit to asbestos washer higher than the part of asbestos washer upper surface on hand or rubber hammer direct control because now part is thinner, intensity is lower.

According to statistics, installation spoilage pole, this part scene reaches 70%, and former process program part qualification rate is less than 30%.This forming mode to avoid in original forming process part periphery exist break, skid wire, coarse-grain, " tangerine peel ", the forming defects such as wrinkling, improve the quality of part, improve part forming first-time qualification rate, reduce product rejection rate, saved production cost.When ensureing to assemble, there is sufficient part assembly shop, ensures that assembling is carried out smoothly.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of the Thin ring plate of crimp;

Fig. 2 is the schematic cross-section of the Thin ring plate of crimp;

Fig. 3 annular spread material extend after schematic shapes.

Detailed description of the invention

Below method of the present invention is described in detail

(1) blanking

Utilize plate shearing machine for blanking, be of a size of 300mm × 300mm.

(2) spread material processed

Through carefully analyzing part and mold shape foundation " conformal " mode, many experiments calculates the shape and size of best exhibition material;

Spread material shape, internal radius: Φ 192.5mm, external diameter: Φ 265.5mm

(3) heat treatment

Reduce part strength and hardness, meet needs of extending

(4) blue or green paint is coated with

Be coated with the green grass or young crops paint of one deck 0.02mm at material surface, reduce part frictional force

(5) panel beating smoothing

Be out of shape after part heat treatment, part is smoothed, for part shaping of extending is prepared

(6) to extend shaping

Utilize conventional mould of extending to carry out shaping of extending on 100T punch press, see Fig. 3, annular spread material is extended into the annular element that cross section is U-shaped, ensure to extend height >=7mm

(7) depainting

Drawing regulation part end-state is without paint-like state, therefore the 0.02mm anterior operation increased green grass or young crops paint is removed, to meet drawing specified states

(8) metal plate forming, assembling

Asbestos washer is arranged in U-lag that cross section is the annular element of U-shaped, the part of U-lag both sides higher than asbestos washer is beaten, make it bendingly fit on the upper surface of asbestos washer, the Thin ring plate part of crimp is finally shaped.

(9) part manufacture completes, and hands over inspection.

Claims (1)

1. a manufacturing process for the Thin ring plate of crimp, is characterized in that, comprises the following steps:

Square plate under utilizing plate shearing machine;

Square shaped plate carries out cutting, requires to make annular spread material according to finished size;

Annular spread material is heat-treated, reduces hardness and the intensity of annular spread material;

Annular spread material upper and lower surface all applies lubricant, the frictional force reducing annular spread material surface and extend between mould die body;

Annular spread material being placed in extends in mould, carries out shaping of extending, and annular spread material is extended into the annular element that cross section is U-shaped;

Removal cross section is the lubricant on the annular element surface of U-shaped;

Asbestos washer is arranged in U-lag that cross section is the annular element of U-shaped, the part of U-lag both sides higher than asbestos washer is beaten, make it bendingly fit on the upper surface of asbestos washer, the Thin ring plate part of crimp is finally shaped.