Brute-force hot-spinning accurate plastic forming method for hollow train shaft workblank
A technology for plastic forming and train axles, which is applied to vehicle parts, transportation and packaging, etc. It can solve the problems of complex manufacturing process and difficulty in manufacturing hollow train axle molds, and achieve the effects of simple manufacturing process, reduced equipment investment, and dense organization
Active Publication Date: 2015-11-25
QINGDAO ZHONGTIANPENG FORGING MFG CO LTD
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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
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[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 brute-force hot-spinning accurate plastic forming method for hollow train shaft workblank and belongs to the technical field of plastic forming of long-shaft parts. According to the brute-force hot-spinning accurate plastic forming method, the problems that hollow train shaft moulds are difficult to manufacture and complex in manufacturing process are solved. The brute-force hot-spinning accurate plastic forming method comprises the steps of material preparing, heating, feeding, spinning and refining. By means of a brute-force hot-spinning technique, the rotating speed of work pieces, the feeding speed of a rotary wheel and the axial moving speed of a rotary wheel frame are controlled by a numerical controlling technique. Thus, high-accuracy hollow train shaft workblank can be obtained in a spinning manner, and quick accurate plastic forming of the hollow train shaft workblank can be achieved. The brute-force hot-spinning accurate plastic forming method is simple in manufacturing procedure, good in metal fiber flow direction, small in machining allowance, high in material utilizing rate, mouldless in forging, low in manufacturing cost and suitable for large batch production of various specifications of hollow train shafts.
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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IPC IPC(8): B21D22/16B21D53/88
Inventor 陈庆敏岳岩
Owner QINGDAO ZHONGTIANPENG FORGING MFG CO LTD
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