A kind of processing technology of backstop spare parts of heavy-duty bearing of railway wagon

A railway freight car and processing technology technology, applied in the field of bearing processing, can solve the problems of limiting the surface accuracy requirements of the two ends of the parts, the processing cost of product bumps, and the backward processing technology, so as to solve the problems of poor versatility, improve production efficiency and resource utilization. reasonable effect

Active Publication Date: 2022-03-29
WAFANGDIAN BEARING GRP STATE BEARING ENG TECH RES CENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] For a long time, our company usually adopts sub-process processing in the processing of heavy-duty bearing backgear parts of railway wagons. Due to the variety of equipment used and the large number of processing stations, the positioning reference is constantly changing, and the cumulative error of the process is high. In the uncontrollable state, the realization of the surface accuracy requirements of both ends of the part is limited. For example, the runout of one end of the curved surface to the surface B is not greater than 0.05mm, and the coaxiality of the curved surface of the A surface is not greater than 0.03mm. The runout of surface B reaches 0.16mm, and the concentricity exceeds the allowable value of 0.22㎜
The backwardness of processing technology has become a major problem restricting production. For this reason, it is urgent to innovate the technology. Only in this way can the problems of product accuracy, work-in-progress damage and processing cost increase be solved.

Method used

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  • A kind of processing technology of backstop spare parts of heavy-duty bearing of railway wagon
  • A kind of processing technology of backstop spare parts of heavy-duty bearing of railway wagon
  • A kind of processing technology of backstop spare parts of heavy-duty bearing of railway wagon

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Effect test

Embodiment 1

[0044] A processing technology for backstop parts of heavy-duty bearings of railway wagons, comprising the following steps:

[0045] (1) Select the bearing backstop forging, and use a lathe to sequentially process the forging end face 1, the first inner hole 2, and the safety angle 3;

[0046] The number of safety corners 3 completed in (1) is 2. After the processing is completed, as follows: figure 1 As shown, the first stage;

[0047] (2) Turn the forging 180 degrees clockwise, and use a lathe to sequentially process the end face 1-1, outer diameter 4, and safety angle 3 of the forging;

[0048] The number of safety corners 3 completed in (2) is 2. After the processing is completed, as follows: figure 2 As shown, the second stage;

[0049] The lathe described in the above steps (1) and (2) adopts the C7232 hydraulic profiling lathe;

[0050] (3) Carry out turning on the end face 1-2 of the forging, the slope of the large diameter 5, and the fillet 6 of the large diamete...

Embodiment 2

[0055] A processing technology for the rear gear parts of heavy-duty bearings of railway wagons, the process is divided into 14 processes, and the specific steps are as follows:

[0056] a. Select the forging of the bearing backstop, use a lathe to process the end face of the forging in turn, rough turn the first inner hole, turn the safety corner, and complete the process 1, such as Figure 11 Shown; Among them, C7232 and CD7632 lathes are used;

[0057] b. Rough car outer surface, car end face, car safety corner, complete process 2, such as Figure 12 Shown; Among them, C7232 and CD7632 lathes are used;

[0058] c, soft grinding, complete process 3, such as Figure 13 Shown; where M7475B surface grinder is used;

[0059] d. The boss outside the car, the rounded corners of the boss outside the car, complete the process 4, such as Figure 14 Shown; Wherein adopt C7632, CD7632 lathe;

[0060] e. Rough car large inner hole, complete process 5, such as Figure 15 Shown; Whe...

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Abstract

The invention relates to a processing technology for bearing spare parts, in particular to a processing technology for backstop spare parts of heavy-duty bearings for railway wagons, and belongs to the technical field of bearing processing. It includes the following steps: (1) Select the forging of the back stop of the bearing, and use a lathe to sequentially process the end face, the first inner hole, and the safety angle of the forging; (3) Turning the end face of the forging, the slope of the large diameter, and the fillet of the large diameter in sequence; (4) Turning the side opposite to the position of the forging where the large inner hole and the third inner hole are located The forgings are processed by turning; the continuous processing process is adopted, and the positioning reference is reasonably selected to ensure that the positioning reference is unified; the CNC machine tool is used to replace the equipment used in the original process, and the digital processing advantage of the CNC machine tool is used to give full play to its unique transmission and execution mechanism. , so as to overcome the process defects in the process of processing.

Description

technical field [0001] The invention relates to a processing technology for bearing spare parts, in particular to a processing technology for backstop spare parts of heavy-duty bearings for railway wagons, and belongs to the technical field of bearing processing. Background technique [0002] For a long time, our company usually adopts the sub-process processing method in the processing of the backstop parts of the heavy-duty bearings of railway wagons. Due to the variety of equipment used and the large number of processing stations, the positioning reference is constantly changing, and the cumulative error of the process is at In the uncontrollable state, the realization of the surface accuracy requirements of both ends of the part is limited. For example, the runout of one end of the curved surface to the surface B is not greater than 0.05mm, and the coaxiality of the curved surface of the A surface is not greater than 0.03mm. The runout of surface B reaches 0.16mm, and th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00B23B1/00
CPCB23P15/00B23B1/00
Inventor 吴伟姜智李忠革温庆宇韩伟连涛于全周雨
Owner WAFANGDIAN BEARING GRP STATE BEARING ENG TECH RES CENT CO LTD
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