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Machining method of narrow and small grinding undercuts of roller bearing

A technology of roller bearing and processing method, which is applied to bearing components, shafts and bearings, mechanical equipment, etc., can solve the problems of large dispersion of the size of the overtravel groove, excessive size of the overtravel groove, and low qualified rate of finished products, etc. Avoid the outflow of defective products, improve the anti-wear ability, and control the effect of heat treatment deformation

Inactive Publication Date: 2018-05-04
AVIC HARBIN BEARING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the narrow and small overrun grooves of existing roller bearings have serious tool wear during the processing process, which easily causes large dispersion of overrun groove sizes, resulting in out-of-tolerance size of overrun grooves and low qualified rate of finished products. problem, and then provide a processing method for roller bearings with narrow and small overrun grooves

Method used

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  • Machining method of narrow and small grinding undercuts of roller bearing
  • Machining method of narrow and small grinding undercuts of roller bearing
  • Machining method of narrow and small grinding undercuts of roller bearing

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specific Embodiment approach 1

[0039] Specific implementation mode one: combine Figure 1 to Figure 4 Describe this embodiment, a method for processing a narrow overrun groove of a roller bearing according to this embodiment, the method includes the following steps,

[0040] Step 1. Fine turning the first plane A, the second plane B and the outer diameter of the ferrule 1:

[0041] The first plane A, the second plane B of the roller bearing ring and the outer diameter 1 of the ring are finely machined by two knives in turn by using the method of split cutting;

[0042] Step 2. Inner diameter of thin turning ferrule 2:

[0043] Using the method of cutting with separate knives, the inner diameter 2 of the ferrule is finely machined with two knives;

[0044] Step 3, thin car rib 3 and raceway 4:

[0045] Carry out fine turning on the rib 3 and the raceway 4 of the roller bearing ring in turn;

[0046] Step 4, fine car overrun slot 5:

[0047] The overrun groove 5 of the roller bearing ring is finely machi...

specific Embodiment approach 2

[0058] Specific implementation mode two: combination figure 2 To illustrate this embodiment, the cutting parameters of the first plane A, the second plane B, and the outer diameter 1 of the ferrule in step 1 of the first fine turning are: the cutting allowance is 60%, and the feed rate is 0.2 mm / r, the cutting speed is 180m / min; the cutting parameters of the first plane A, the second plane B and the outer diameter of the ferrule 1 of the second fine turning are: the cutting allowance is 40%, and the feed rate is 0.22mm / r, the cutting speed is 200m / min. In such a setting, using the method of split cutting, a reasonable amount of back cutting is given in the process of the first plane A, the second plane B and the outer diameter of the ferrule to reduce the residual stress on the surface of the ferrule, so that Control the heat treatment deformation to ensure the size of the overrun groove of the final product. Other compositions and connections are the same as in the first ...

specific Embodiment approach 3

[0059] Specific implementation mode three: combination figure 2 To illustrate this embodiment, the cutting parameters of the inner diameter 2 of the first fine turning ring in step 2 of this embodiment are: the cutting allowance is 60%, the feed rate is 0.2mm / r, and the cutting speed is 160m / min; The cutting parameters of the inner diameter 2 of the second fine turning ring are: the cutting allowance is 40%, the feed rate is 0.22mm / r, and the cutting speed is 180m / min. In such a setting, using the method of split cutting, a reasonable amount of back cutting is given in the 2nd process of the inner diameter of the fine turning ferrule, so as to reduce the surface residual stress of the ferrule, thereby controlling the heat treatment deformation and ensuring the size of the overtravel groove of the final product . Other compositions and connections are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention relates to the technical field of machining, in particular to a machining method of narrow and small grinding undercuts of a roller bearing. According to the machining method, the problems that in the machining process of existing narrow and small grinding undercuts of a roller bearing, tools are worn severely, the large size dispersion of the grinding undercuts is prone to being caused, consequently, dimension deviation of the grinding undercuts is caused, and the percent of pass of finished products is low are solved. The method comprises the following steps that firstly, a tool-by-tool cutting method is adopted, the first plane, the second plane, the sleeve ring outer diameter and the sleeve ring inner diameter of a roller bearing sleeve ring are sequentially subjected tofinish lathing machining through two tools; then, flanges, roller ways and the grinding undercuts of the roller bearing sleeve ring are sequentially subjected to finish lathing machining; the first end face and the second end face of the sleeve ring are subjected to soft grinding, and after the flanges and the roller ways of the bearing sleeve ring are subjected to rough lathing machining, the roller ways continue to be subjected to finish grinding; and finally, the grinding undercuts are finally checked, and the bearing sleeve ring is subjected to heat treatment. The machining method is usedfor machining the narrow and small grinding undercuts of the roller bearing.

Description

technical field [0001] The invention relates to the technical field of mechanical processing, in particular to a processing method for narrow overrun grooves of roller bearings. Background technique [0002] Cylindrical roller bearings are widely used, and the processing technology of its raceways and rolling elements is very mature, but there is still room for research and improvement in the processing methods and process equipment for the overtravel grooves of rings with ribs. The design of the size and shape of the overrun groove has high requirements on the processing technology of the overrun groove and the quality of the ferrule. For the narrow and small overrun groove structure that is difficult to machine, the processing technology of the overrun groove is particularly important. The narrow and small overrun groove of a certain cylindrical roller bearing needs to meet the four coordinate process dimensions to meet the processing requirements of the part. Cylindrical ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00F16C33/30
CPCB23P15/003F16C33/30
Inventor 罗志刚薛雪姜铁寅兴长喜赵燕刁庆王喆
Owner AVIC HARBIN BEARING
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