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Machining method for backstop blank

A blank processing and blank processing technology, which is applied in the field of rear block blank processing, can solve the problems of difficult machining, waste of raw materials, time-consuming, etc., and achieve the effects of saving machining time, reducing the wear and tear of machining equipment, and reducing the amount of machining

Inactive Publication Date: 2014-04-23
JINXI RAILWAY VEHICLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, in the process of forging to form the blank, the bar is directly forged into a round cake shape, so that the subsequent machining after the blank is formed is relatively difficult and time-consuming, and raw materials are also wasted when blanking.

Method used

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  • Machining method for backstop blank
  • Machining method for backstop blank
  • Machining method for backstop blank

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0022] The invention relates to a method for processing a backstop blank. The specific steps are:

[0023] 1) Feed with bar stock, the size of the feed is Φ120×85 (mm), and remove the surface burr.

[0024] 2) Use a thyristor water-cooled static frequency converter to heat the placed bar, and use a portable infrared thermometer model PT300 to measure the furnace temperature every 30 minutes to ensure that there is no overheating or overburning of the billet during the heating process. When the temperature is above 1100°C, the blank can be forged, and the blank is flattened: the flattening is divided into axial and radial flattening, the axial flattening h=36, and the radial flattening=Φ185.

[0025] 3) Punch the flattened blank with a 750kg air hammer machine, and the punching size of this technical solution is Φ50.

[0026] 4) first put such as figure 2 The rear block rolling forming die shown is preheated to 150°C, and then fixed on the fixture, put the punched blank into...

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PUM

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Abstract

The invention relates to a machining method for a backstop blank, which belongs to the field of machining for railway wagon accessories. The machining method disclosed by the invention comprises the following steps of: heating the blank at first, and then performing axial and radial flattening, then punching the flattened blank, then performing rolling forming on the backstop blank by using a backstop rolling forming die, and finally shaping the backstop blank by a backstop shaping die. The machining amount of the blank machined by the method disclosed by the invention is reduced during subsequent machining; meanwhile, raw materials are saved, cost is decreased, machining equipment wear is reduced, and machining working hours are saved.

Description

technical field [0001] The invention relates to a processing method for a rear block blank, which belongs to the field of processing railway wagon accessories. Background technique [0002] The backstop plays a key role in the sealing of the bearing. It fastens the inner ring of the bearing together with the front cover, so that the bearing does not move under the action of the axial force during the movement, thus ensuring the safety of the railway freight car. run. In the traditional process, the processing of the bearing backstop is completed by forging and machining. Specifically, the rear block is first forged to form a blank, and then finished by machining and phosphating. Among them, in the process of forging and pressing to form the blank, the bar is directly forged into a round cake shape, so that the subsequent machining after the blank is formed is relatively difficult and time-consuming, and raw materials are also wasted when blanking. Contents of the inventi...

Claims

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Application Information

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IPC IPC(8): B21D35/00B21D53/88
Inventor 周志勇康锋杨文林陈小花郭玉茹陈凯宁建强程平靳彪
Owner JINXI RAILWAY VEHICLE CO LTD
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