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High-strength hot-spinning precision plastic forming method for hollow train axle blanks

A technology for plastic forming and train axles, which is applied to vehicle parts, transportation and packaging, etc., can solve the problems of hollow train axle mold manufacturing difficulties and complex manufacturing processes, and achieve the advantages of reduced equipment investment, simple manufacturing process, and reduced plastic deformation force Effect

Active Publication Date: 2017-07-07
QINGDAO ZHONGTIANPENG FORGING MFG CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the difficult problems of hollow train shaft mold manufacturing and complex manufacturing process, and proposes a hollow train shaft blank strong hot spinning precision plastic forming method, using strong hot spinning technology, on CNC strong spinning equipment , through numerical control technology to control the rotation speed of the workpiece, the feed speed of the spinning wheel, and the axial movement speed of the spinning wheel frame, and spin out a high-precision hollow train shaft blank

Method used

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  • High-strength hot-spinning precision plastic forming method for hollow train axle blanks
  • High-strength hot-spinning precision plastic forming method for hollow train axle blanks
  • High-strength hot-spinning precision plastic forming method for hollow train axle blanks

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with specific embodiments and accompanying drawings.

[0033] Such as Figure 1-3 shown, depending on the product model, the prepared diameter is For a seamless steel pipe with a length of 1746mm and a wall thickness of 80mm, the steel pipe blank is heated to 1150°C±20°C, and the blank is installed on the core mold of the powerful spinning equipment through an automatic feeding device, and the blank and the core are connected by the automatic clamping device. One end of the mold is fixed on the spindle of the spinning machine for rolling. Set the spinning wheel 2 forming angle α=26.5°, shaping angle β=15°, eccentricity C=10mm, and spinning wheel 2 forming fillet radius ρ=7mm. The spindle of the spinning machine drives the blank to rotate, and the three spinning wheels 2 simultaneously spin the workpiece at an angle of 120°. The three spinning wheels 2 are installed on the integral spinner frame 1, a...

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Abstract

The invention relates to a method for powerful hot spinning precision plastic forming of hollow train axle blanks, which belongs to the technical field of plastic forming of long shaft parts, and mainly solves the problems of difficulty in manufacturing hollow train axle molds and complicated manufacturing processes. The invention includes several steps of material preparation, heating, feeding, spinning, and finishing. The powerful hot spinning technology is used to control the rotation speed of the workpiece, the feed speed of the rotary wheel, and the axial movement of the rotary wheel frame through the numerical control technology. Speed, spinning out high-precision hollow train axle blanks, realizing rapid and precise plastic forming of hollow train axle blanks. The invention has the advantages of simple manufacturing process, good metal fiber flow direction, small machining allowance, high material utilization rate, dieless forging and low manufacturing cost, and is suitable for mass production of various types of hollow train axles.

Description

technical field [0001] The invention relates to a method for precise plastic forming of a hollow train axle blank by powerful hot spinning, and belongs to the technical field of plastic forming of long shaft parts. Background technique [0002] With the continuous improvement of the running speed of rolling stock and the continuous increase of load capacity, in order to reduce energy consumption and improve the safety and carrying capacity of train operation, in the structural design of new high-speed trains and heavy-duty trains, the weight of the load-bearing structure Getting lighter and lighter. As the key load-bearing component of high-speed trains, the axle's structural mass belongs to the unsprung vibration mass, and the size of the unsprung vibration mass determines the force of the wheel-rail movement to a certain extent. In the process of train product design, under the premise that the axle load is determined, in order to reduce the force of the wheel and rail ac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D22/16B21D53/88
Inventor 陈庆敏岳岩
Owner QINGDAO ZHONGTIANPENG FORGING MFG CO LTD
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