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Outward double-row tapered roller bearing inner race measurement method

A technology for tapered roller bearings and measuring methods, which is applied in the directions of measuring devices, mechanical measuring devices, and mechanical clearance measurements, etc., and can solve problems such as difficulty in ensuring dimensional accuracy and difficulty in grinding the small end face of the inner ring.

Inactive Publication Date: 2012-05-02
瓦房店工业冶金轴承制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing measurement methods for measuring the inner ring raceway of double row tapered roller bearings, such as figure 1 As shown, the raceway size of the inner ring is measured using the large end face of the inner ring as the measurement reference plane; this measurement method is to achieve interchangeability of the outward-facing double-row tapered roller bearings, that is, the interchangeability of assembly height and clearance, the first condition must be Ensure the uniform width of the inner ring, that is, the smaller the difference between the actual width of the inner ring (10), the higher the exchange rate of the complete set of bearings, because the change of the actual width of the inner ring (10) directly affects the actual axial direction of the entire set of bearings Clearance deviation (6) (see figure 2 ); Therefore, in order to ensure the interchangeability of the internal axial clearance, it is necessary to grind the small end face (12) of the inner ring, but it is very difficult to grind the small end face (12) of the inner ring, and it is difficult to ensure the dimensional accuracy

Method used

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  • Outward double-row tapered roller bearing inner race measurement method
  • Outward double-row tapered roller bearing inner race measurement method
  • Outward double-row tapered roller bearing inner race measurement method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] 352064 bearings, the national standard stipulates that the inner ring width is 100(0~-0.40)mm, the outer ring width is 168(0~-0.40)mm, the assembly height is 220(+0.8~-0.8)mm, α=17°, group C0 Axial clearance: (0.46~0.68) mm. Inner ring raceway B1=B2=220mm-100mm-(220-168)mm÷2=94mm.

[0042] (1) Taking the small end face 12 of the inner ring as the reference, the measurement steps are as follows:

[0043] ① Process the actual width of the inner ring from 10 to 100 (0~-0.40) mm;

[0044] ② Grinding and processing the inner ring raceway B1 and raceway B2 based on the large end face 14 of the inner ring;

[0045] ③Measure the inner ring raceway B1 and raceway B2 based on the small end face 12 of the inner ring:

[0046] Such as Figure 4 As shown, the measured size range of the raceway B1 is about 94 (-0.017~+0.017) mm, and the measured size range of the raceway B2 is about 94 (-0.017~+0.017) mm, that is, the two inner rings Due to the difference in the size of the race...

Embodiment 2

[0058] 352236 bearings, the national standard stipulates that the width of the inner ring is 86 (0~-0.25) mm, the width of the outer ring is 152 (0~-0.25) mm, the assembly height is 192 (+0.5~-0.5) mm, α=16°41'57 ”, C0 group axial clearance: 0.23mm~0.36mm. Inner ring raceway B1=B2=192mm-86mm-(192-152)mm÷2=86mm.

[0059] (1) The measurement steps based on the small end face are as follows:

[0060] ① Process the actual width of the inner ring from 10 to 86 (0~-0.25) mm;

[0061] ② Grinding and processing the inner ring raceway B1 and raceway B2 based on the large end face 14 of the inner ring;

[0062] ③Measure the inner ring raceway B1 and raceway B2 based on the small end face 12 of the inner ring:

[0063] like Figure 4 As shown, the measured size range of raceway B1 is about 86 (-0.017~+0.017) mm, and the size range of raceway B2 is about 86 (-0.017~+0.017) mm, that is, the two inner ring raceways Due to the difference in processing size, the maximum actual axial clear...

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Abstract

The invention discloses an outward double-row tapered roller bearing inner race processing and measurement method. By choosing a reference surface for inner race measurement, the problem that the grinding is highly difficult, the dimensional precision is hard to guarantee, as a result, the exchange rate of complete sets of bearings is affected is solved. In order to solve the problem, the invention adopts the following technical scheme: the actual width (10) of the inner race of an outward double-row tapered roller bearing is machined according to a range specified by the national standard, and the mutual difference of the actual width (16) of the inner race can be completely ignored; and the outward double-row tapered roller bearing inner race measurement method measures the dimension of the raceway of the inner race and the axial clearance in the bearing by adopting a small inner face end surface (12) as a measurement reference. The measurement method has the advantages that: the difficulty in machining the width of the inner race of the bearing is greatly decreased, and the fitting rate of exchanged outward double-row tapered roller bearings is greatly increased.

Description

technical field [0001] The utility model relates to a measuring method for a double-row tapered roller bearing, in particular to a measuring method for the inner ring of an outward-facing double-row tapered roller bearing. Background technique [0002] The assembly height and clearance of double-row tapered roller bearings are two related technical indicators that affect their load-carrying capacity and service life. Correctly measure and calculate the assembly height, and determine the appropriate grinding amount for the assembled intermediate ring or ring end face. Only in this way can the assembly height and clearance of the combined products meet the specified requirements. Existing measurement methods for measuring the inner ring raceway of double row tapered roller bearings, such as figure 1 As shown, the raceway size of the inner ring is measured using the large end face of the inner ring as the measurement reference plane; this measurement method is to achieve inter...

Claims

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Application Information

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IPC IPC(8): G01B5/02G01B5/14
Inventor 邹丽媛
Owner 瓦房店工业冶金轴承制造有限公司
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