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One-time forming process of cold heading for multi-step bushings for vehicles

A molding process and multi-step technology, applied in the direction of metal processing equipment, etc., can solve the problems of increasing the difficulty of one-time molding, the complexity of the mold structure, and the difficulty of drilling holes, so as to save raw materials, increase labor productivity, and improve mechanical properties. Effect

Active Publication Date: 2021-01-05
上海华鞍汽车配件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. Multi-steps: The more steps the parts require, the more modules are required, which greatly increases the difficulty of one-time molding and requires 5 molds to form;
[0004] 2. Hole: It complicates the structure of the mold. Since the workpiece has many steps and a flange, it increases the difficulty of drawing holes and requires more than 5 molds to complete;
However, this process requires secondary processing, and the labor cost is high. When the car is produced in large quantities, eight CNC lathes and eight operators are required to work in two shifts for 24 hours.

Method used

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  • One-time forming process of cold heading for multi-step bushings for vehicles
  • One-time forming process of cold heading for multi-step bushings for vehicles
  • One-time forming process of cold heading for multi-step bushings for vehicles

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Embodiment Construction

[0042]In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention will be further elaborated below.

[0043] see Figure 1 to Figure 8 The one-time forming process of cold heading of multi-step bushing for vehicles includes the following steps:

[0044] Step 1: Cutting the wire: the wire wheel mechanism pulls in the wire, passes through the wire mold, holds the wire against the mountain for positioning, the material cutting mechanism moves, cuts the wire according to the size, and the transmission mechanism clamps the cut material, and sends it to the specific position of the 1# mold , at this time the workpiece is a cylindrical shear.

[0045] combine figure 2 As shown, step 2: Upsetting the cut material and drilling guide holes, the punching unit moves as a whole, the punch rod of the die pushes the workpiece into the cavity of the main mold, the punch rod makes guide holes on ...

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PUM

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Abstract

The invention discloses a cold heading one-step forming process for an automotive multi-step bush. The process comprises the following steps: SI, shearing a wire; SII, performing cold heading on the sheared wire, and punching a guiding hole; SIII, performing forced bundling and hole drawing; SIV, performing hole drawing and hole protection; SV, performing hole protection, flange preforming and hole bundling; SVI, performing hole protection and flange pressing; and SVII, leading a scrap material into a scrap material tube.

Description

technical field [0001] The invention relates to the technical field of automobile production and manufacturing industry, in particular to a one-step cold heading molding process for multi-step bushings for automobiles. Background technique [0002] The production of multi-step bushings for vehicles in the prior art has the following technical difficulties: [0003] 1. Multi-steps: The more steps the parts require, the more modules are required, which greatly increases the difficulty of one-time molding and requires 5 molds to form; [0004] 2. Hole: It complicates the structure of the mold. Since the workpiece has many steps and a flange, it increases the difficulty of drawing holes and requires more than 5 molds to complete; [0005] 3. Flow lines: due to the many steps of the parts with flange through holes, there are many uncertain factors in the direction of the flow lines. It takes several mold trials to improve the plan to produce better flow lines, so that the streng...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21J5/02B21J5/08B21J5/10B21J5/00
CPCB21J5/002B21J5/025B21J5/08B21J5/10
Inventor 孙德明倪平唐坚
Owner 上海华鞍汽车配件有限公司
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