Forming process of large conic roller blank

A tapered roller, large-scale technology, applied in the field of forming and processing, can solve the problems of production equipment, labor, low utilization rate of steel, low production efficiency, etc., to improve processing efficiency and accuracy, avoid easy cracking, and improve organization. The effect of compactness

Inactive Publication Date: 2007-08-22
王建昌
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Problems solved by technology

The turning forming process is to place the material bar on the lathe to process the chamfering and end surface shape at one end, and then cut it according to the required length, and then turn the cut material section around and use another lathe to process the chamfering cavity at the other end, although Its shape and size processing parameters are easy to adjust, but the steel utilization rate is not high (usually only 60-70%), the process is complicated, the production efficiency is low, and the production equipment and labor are more
Cold heading impact forming has the advantages of high utilization rate of raw materials, high production efficiency, and less equipment and labor. However, the processing range of the largest roller cold heading machine in China is rollers with an outer diameter of no more than 25mm, and rollers with a diameter larger than 25mm. Heading machine, and because of the extremely low useful work in theory, it cannot be used in actual production and other defects

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  • Forming process of large conic roller blank

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Embodiment Construction

[0017] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0018] The invention is a cold extrusion forming process. The material section is slowly deformed by extrusion at room temperature, and the outer diameter Φ25-50mm, GCr15I hot-rolled annealed round steel is made into a tapered roller blank with an included angle between the outer diameter busbar and the axis of 2°. , the required deformation pressure is 2000-5000KN, and YJ61-315X hydraulic press is used. Since blank forming requires a short stroke, it can process 10-15 pieces per minute, which is 2-4 minutes for one piece compared with traditional turning, and the production efficiency is improved. About 20 times.

[0019] Concrete process steps are:

[0020] a) Cutting the metal bar into sections of required specifications;

[0021] b) Grinding and smoothing the outer circle of the material section to the required outer diameter;

[0022] c) Put the above...

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Abstract

The present invention discloses forming process of large conic roller blank, and belongs to the field of cold extrusion forming technology. The forming process includes the steps of: cutting the metal rod into the material sections in required size, external grinding to required size, extruding in an extruder at pressure of 200-800 tons, and pushing out the extruded large conic roller blank. The forming process is superior to turning process, and has high steel material utilization rate, high production efficiency, improved material structure and other advantages.

Description

technical field [0001] The invention relates to a forming processing method, in particular to a forming method of a large blank tapered roller. Background technique [0002] The traditional tapered roller forming process mainly includes turning forming (suitable for large tapered rollers) and cold heading impact forming (suitable for small, medium and small-sized tapered rollers). The turning forming process is to place the material bar on the lathe to process the chamfering and end surface shape at one end, and then cut it according to the required length, and then turn the cut material section around and use another lathe to process the chamfering cavity at the other end, although Its shape and size processing parameters are easy to adjust, but the steel utilization rate is not high (usually only 60-70%), the process is complicated, the production efficiency is low, and the production equipment and labor are more. Cold heading impact forming has the advantages of high uti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C23/02B21C25/02B21C23/01B21C31/00
Inventor 王建昌
Owner 王建昌
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