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Taper blank-holding and deep-drawing stamping method

A deep drawing and tapered technology, which is applied in the direction of metal processing equipment, forming tools, manufacturing tools, etc., can solve the problems of difficult implementation, high cost, complex structure of stamping equipment with variable blank holder force method, etc., and achieve a convenient and reasonable solution. Effect

Active Publication Date: 2013-10-23
SHANGHAI MEISHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the variable blank holder force method has the disadvantages of complex stamping equipment structure and difficult control, so it is difficult to implement and the cost is high

Method used

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  • Taper blank-holding and deep-drawing stamping method

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Embodiment Construction

[0034] The specific implementation manner will be further described below in conjunction with the accompanying drawings. This embodiment is aimed at a tapered blank holder for a cylindrical part of an air conditioner compressor shell, and its stamping and stretching adopts a tapered blank holder, such as figure 1 As shown, 1 is a punch, 2 is a workpiece, 3 is a blank holder, and 4 is a die. The basic process is (see figure 2 ):

[0035] The first step is to manufacture a drawing die consisting of a punch, a die and a blank holder, wherein the outer diameter of the punch matches the inner diameter of the cylinder of the drawn part, and the die has a diameter that matches the outer diameter of the drawn part The upper end of the inner hole has a conical concave with a machining allowance, and the lower end of the blank holder has a conical head that matches the conical concave and has a machining allowance; it will be processed after the optimal cone angle value is determined ...

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PUM

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Abstract

The invention relates to a taper blank-holding and deep-drawing stamping method for a cylindrical piece and belongs to the technical field of stamping forming. A deep-drawing die is manufactured to enable a blank to form a tapered recess falling into a tapered concave of a female die, and a required cylinder is deep-drawn in the center of the tapered concave till the cylinder reaches the predetermined depth, wherein the taper angle of the blank holder tapered concave of the deep-drawing die is an optimal taper angle calculated by a computer. By adopting the method, the problems of wrinkling and tension fracturing of a deep-drawing piece in the stamping process are effectively solved to ensure that the manufactured deep-drawing die can be deep-draw high-quality deep-drawing pieces.

Description

technical field [0001] The invention relates to a stretching method for metal materials, in particular to a tapered edge-drawing and stamping method for cylindrical parts, and belongs to the technical field of stamping and forming. Background technique [0002] Deep drawing is an important process in sheet metal forming and is widely used in automobiles, aerospace, and household appliance manufacturing. During the drawing process, the flange part of the workpiece in the drawing deformation zone will be unstable and wrinkle under the action of tangential compressive stress, which will affect the quality of the drawn part. When the wrinkled blank is forcibly pulled into the gap between the concave and convex dies, it will get stuck in the die, damage the die, and cause the bottom of the stretched part to break. Applying a certain blank-holding force to the sheet by using the blank-holder ring can effectively prevent the wrinkling of the flange part of the sheet. [0003] The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D22/20B21D37/10
Inventor 裴新华韩乃川王进
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD
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