Method for processing thrust wheel axle

A processing method and technology for rollers, which are applied in the field of processing track rollers and axles of track-type construction machinery, can solve the problems of inability to meet the requirements of energy saving, environmental protection, high-efficiency mass production, high equipment investment cost, low production efficiency, etc., so as to improve the surface The effect of finish, reducing heat treatment costs and improving quality levels

Inactive Publication Date: 2019-01-04
XUZHOU XCMG CRAWLER CHASSIS CO LTD
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Problems solved by technology

The above-mentioned processing method has been widely used for a long time because it can guarantee product quality requirements, but its various processes are relatively complicated, with low produc

Method used

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Embodiment Construction

[0021] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention are described in more detail. The described embodiments are some, but not all, embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention. Embodiments of the present invention will be described in detail below.

[0022] A method for processing a roller shaft of a support roller, the processing method is:

[0023] Step 1. Put the entire initial bar of the roller axle into the centerless lathe, and press the surface through a roller press to make the surface roughness reach Ra6.3, remove the surface defects of the bar, and ensure the required diameter;

[0024] Step 2, the bar is cut in sections;

[0025] Step 3: Pass the se...

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Abstract

The invention provides a method for processing a thrust wheel axle. Lathing of the outer round of a whole bar is achieved by using a bar centreless lathing technology, and the technology that lathingis carried out after existing bar segment cutting is replaced; a roller pressing process is used for enabling the axle surface to generate plastic deformation, metal flowing is used for eliminating surface defects such as machining knife lines and pits, the surface smoothness is improved, the compressive stress on the axle surface is increased, and the fatigue resistance of the surface of a finished product is improved; induction heating is carried out, so that rapid heating and short-time heat preservation are performed, austenite grains are refined, and scale on the surface of the workpieceis reduced; quenching is carried out with a water-based quenching agent, and fine cryptocrystalline martensite is obtained inside the workpiece; tempering at appropriate temperature is carried out toachieve the aim of replacing the hardening and tempering process, and the cost of heat treatment is significantly reduced.

Description

technical field [0001] The invention relates to a method for processing a wheel shaft of a track-type engineering machinery, and belongs to the technical field of wheel shaft processing of a track-type engineering machinery. Background technique [0002] As a key component in the walking system of crawler-type construction machinery, the rollers bear almost the entire weight of the whole machine and act as guide rails for the running of the crawler. They are constantly impacted by complex and changeable excitation loads from the crawler and the upper frame. The working conditions are extremely bad. The roller axle is one of the most impacted and worn parts among all parts of the roller. Its heat treatment performance, microstructure, and surface finish directly determine the life of the roller. Currently, the axle of the roller is a non-standard component. , The processing and manufacturing methods are diverse and specific, which requires a special and mature processing met...

Claims

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Application Information

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IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 徐轲王旭刘彬宋之克王贝吕阳常艳红董春锋崔新隆
Owner XUZHOU XCMG CRAWLER CHASSIS CO LTD
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