Machining method of tapered roller for rail transit

A technology of tapered rollers and processing methods, which is applied in the direction of metal processing equipment, manufacturing tools, and the control of workpiece feed movement, etc. It can solve problems such as poor consistency of dimensional accuracy, and the radian of the rolling surface contour cannot meet the requirements, etc., to achieve temperature rise small effect

Inactive Publication Date: 2021-07-23
C&U CO LTD +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] A bearing is a bearing that mainly bears radial direction and can bear a certain axial force. It is common in various fields of our life and work. Among them, tapered roller bearings used in the field of rail transportation, compared with other fields , higher requirements on the service life, high-speed performance, impact resistance, load capacity, etc. of tapered roller bearings, which lead to higher precision of tapered roller bearings used in this...

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  • Machining method of tapered roller for rail transit
  • Machining method of tapered roller for rail transit
  • Machining method of tapered roller for rail transit

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Embodiment Construction

[0013] An embodiment of a tapered roller processing method for rail transit of the present invention is as follows Figure 1-3 As shown, when processing rollers with a diameter below 15mm, the following steps are included:

[0014] (1) The American national cold heading machine RH161 is used to form the roller blank at one time by cold heading;

[0015] (2) Heat-treat the formed roller blank and remove the oxidized skin;

[0016] (3) The 3MK6040 model grinding machine equipped with CBN grinding wheel is used to carry out through-type centerless grinding of the rollers, complete the rough grinding of the outer diameter of the rollers, and eliminate the outer diameter allowance of the rollers. Grinding;

[0017] (4) Use the MK7730 type grinding machine equipped with CBN grinding wheel to carry out rough grinding on the large end face and small end face of the roller, and grind the allowance of the small end face to solve the weight consistency caused by the small end face betw...

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Abstract

The invention provides a machining method of a tapered roller for rail transit, which is characterized by comprising the following steps: cold heading and forming of a blank; heat treatment and removal of oxide skin; rough grinding of the outer diameter; rough grinding of double end surfaces; hardness detection; cut-in grinding of the outer surface; superfinishing of a spherical base surface; superfinishing of the outer diameter; demagnetizing, cleaning and drying; appearance detection; size detection grouping; and cleaning, rust prevention and packaging. Aiming at the defects in the prior art, the invention provides the machining method of the tapered roller for rail transit, the machining method can ensure that the dimensional precision and consistency of the tapered roller are at a higher level, and the tapered roller can have higher rotation precision and is low in noise and small in temperature rise when running in a bearing.

Description

technical field [0001] The invention relates to a method for processing tapered rollers for rail transit. Background technique [0002] A bearing is a bearing that mainly bears radial direction and can bear a certain axial force. It is common in various fields of our life and work. Among them, tapered roller bearings used in the field of rail transportation, compared with other fields , higher requirements on the service life, high-speed performance, impact resistance, load capacity, etc. of tapered roller bearings, which lead to higher precision of tapered roller bearings used in this field, especially in tapered roller bearings The tapered rollers used as rolling elements have poor consistency in dimensional accuracy, and the contour radian of the rolling surface cannot meet the requirements. This has led to the fact that only a small amount of tapered roller bearings produced in China are used in non-critical parts of trucks or passenger transport. Tapered roller bearing...

Claims

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Application Information

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IPC IPC(8): B23P15/00B24B1/00B24B49/00
CPCB23P15/00B24B1/00B24B49/00
Inventor 邓德祥郑飞熊夏卫华王兵张广栋官孟垚汤仁波余菊华
Owner C&U CO LTD
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