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Assembly process for controlling bearing clearance

A technology of assembly process and bearing clearance, applied in bearing components, shafts and bearings, mechanical equipment, etc., can solve problems such as complex movements and many processes

Active Publication Date: 2019-08-30
杭州电子科技大学安吉智能制造技术研究院有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The automatic assembly line is mostly completed manually due to many processes and complicated actions.

Method used

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  • Assembly process for controlling bearing clearance
  • Assembly process for controlling bearing clearance
  • Assembly process for controlling bearing clearance

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Experimental program
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Embodiment Construction

[0075] The present invention will be further described below in conjunction with accompanying drawing.

[0076] Such as figure 1 As shown, define the diameter of the outer circle of the inner ring as Φd, the diameter of the inner hole of the outer ring as ΦD, the diameter of the ball as Φdg, the tolerance of the diameter of the outer circle of the inner ring as △d, and the tolerance of the diameter of the inner hole of the outer ring as △D, The diameter tolerance of the ball is △dg, then, the assembly clearance μ 0 =ΔD-Δd-2Δdg. Therefore, selecting the outer ring, inner ring, and balls of △D=△d=2△dg for assembly can achieve the highest assembly accuracy at the same cost.

[0077] After measurement, the applicant found that the distribution of the specific errors of the inner ring, outer ring, and balls within the dimensional tolerance range is close to a normal distribution, that is, the number of large tolerances is small, and the number of small tolerances is large; speci...

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Abstract

The invention discloses an assembly process for controlling bearing clearance. When inner ring grooves and outer ring grooves are assembled with balls, the clearance is inconsistent, the precision islow, or even out of tolerance due to the fact that the size errors of the inner ring grooves and the outer ring grooves of bearings and the balls in the machining process are different. The process comprises the following steps: firstly, taking and grading the outer rings, inner rings and balls of one batch; secondly, subdividing the outer rings, the inner rings and the balls of each grade into two stages; thirdly, performing superior precision assembly; fourthly, carrying out secondary precision assembly for the first time; and fifthly, carrying out secondary precision assembly for the secondtime; and sixthly, finishing the bearing assembling. With the process, the inner rings, the outer rings and the balls are divided into six grades according to the measurement error, wherein the grades are respectively +3 grade, +2 grade, +1 grade, -1 grade, -2 grade and -3 grade, and a combination scheme of workpieces of each grade is established according to the characteristic that the number ratio of the workpieces of the six grades approaches to 1:2:3:3:2:1; and therefore, the residual quantity waste of the inner rings, the outer rings and the balls in one batch is reduced, and the manufacturing cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of intelligent manufacturing, and in particular relates to an assembly process for controlling bearing clearance. Background technique [0002] Bearings are important mechanical basic components, and their performance and quality determine the performance and quality of machinery and equipment to a certain extent. my country is the largest manufacturer and consumer of various types of bearings, but there is a big gap compared with foreign technology and quality levels. At present, in the bearing manufacturing process, turning and grinding automatic lines have been widely used. The automatic assembly line is mostly completed manually due to many processes and complicated actions. Because the quality of bearing assembly has a great influence on its overall quality, the current assembly of bearings is inefficient on the one hand, and the assembly quality is inconsistent on the other hand, so the unit processi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C43/04
CPCF16C43/04
Inventor 陈国金陈昌袁以明许明苏少辉王万强李永宁褚长勇龚友平陈慧鹏刘婷婷金杜挺李龙
Owner 杭州电子科技大学安吉智能制造技术研究院有限公司
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