Turning technology of thin-walled sealing piece for rail transit

A technology of rail transit and seals, which is applied in the field of bearing manufacturing, can solve problems such as clamping skew and clamping deformation of parts, and achieve the effect of solving clamping skew and improving product accuracy and quality

Inactive Publication Date: 2016-02-17
CHANGSHU CHANGZHOU BEARING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem mainly solved by the present invention is: aiming at the deficiencies of the prior art, it provides a turning process of thin-walled seals for rail transit, which can solve the problems of clamping skew and clamping deformation of parts, and improve product precision and quality

Method used

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Embodiment Construction

[0009] The preferred embodiments of the present invention are described in detail below, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0010] The invention discloses a lathe processing technology of a thin-walled seal for rail transit. The material of the thin-walled seal for rail transit is SKF3 bearing steel, which can improve the service life and reliability of the product and lay a foundation for the subsequent processing quality of the product. The turning process includes the following steps: rough turning inner hole plane-rough turning outer circle plane-CNC finishing inner hole plane-CNC finishing turning outer circle plane.

[0011] During lathe processing, the parts to be processed of thin-wall seals for rail transit are clamped and fixed on the CNC lathe. When clamping, three sets of floating jaws are used at the sam...

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Abstract

The invention discloses a turning technology of a thin-walled sealing piece for rail transit. The thin-walled sealing piece for rail transit is formed in the mode that after a plurality of floating type jack catches are adopted on a numerical control lathe for one-time clamping, rough turning and finish turning are performed. In the rough turning process, an R0.4 circular bead blade is adopted, the back engagement of the cutting edge is 0.1-0.12 mm, the feeding amount is 0.04-0.05 mm/r, and 0.08-0.1 mm fine turning allowance is reserved on the outer circle and an inner hole; in the finish turning process, an R0.2 circular bead blade is selected, the back engagement of the cutting edge is 0.02-0.04 mm, and the feeding amount is 0.02-0.04 mm/r. Due to the mode, the problems that clamping of parts deflects and clamping deforms can be solved, and product precision and quality are improved.

Description

technical field [0001] The invention relates to the technical field of bearing manufacture, in particular to a turning process of a thin-walled sealing member for rail transit. Background technique [0002] High-speed trains are required to be able to operate under very strict working conditions, especially in the radial, axial and high-speed operating conditions. The seals of high-speed railway locomotives must be resistant to high pressure and friction, so as to prolong the normal working time of the main engine without leakage and the maintenance and replacement cycle , and must maintain its functionality with maximum reliability. For the existing thin-walled seals for rail transit, the machining precision of the ferrule before heat treatment has a great influence on the later heat treatment deformation, grinding precision, and final product quality, and serious cases will directly lead to scrapping. The traditional turning process adopts three-point contact jaw clamping...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B1/00B23B31/02
CPCB23B1/00B23B31/02
Inventor 陈胜东
Owner CHANGSHU CHANGZHOU BEARING
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