A kind of logarithmic profile roller and manufacturing method

A roller and logarithmic technology, applied in the field of logarithmic profile rollers and manufacturing, can solve the problems of inconvenient processing, complex calculation, and large inspection workload, and achieve the effects of avoiding early failure, simple calculation, and convenient inspection.

Active Publication Date: 2022-07-26
LUOYANG LYC BEARING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the multi-segment equal-length arc fitting method has no practical value, that is to say, the actual result of designing the roller as a multi-segment equal-length arc curve and a logarithmic curve is the same, and there are also complex calculations and inconvenient processing. , the problem of heavy detection workload, on the other hand, it also shows that even if the logarithmic curve design is carried out in the design, the processing and detection are also carried out in segmented arcs, and the design, processing, and detection are separated and not unified

Method used

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  • A kind of logarithmic profile roller and manufacturing method
  • A kind of logarithmic profile roller and manufacturing method
  • A kind of logarithmic profile roller and manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Example 1, please refer to image 3 , taking a bearing as an example, the effective length of the roller L we =47mm, the calculated Lundberg logarithmic equation is:

[0057]

[0058] Set convergence accuracy eps=1X10 -10 mm, the entire iterative process takes less than 1 second, and the fitted curve is as follows image 3 shown. After calculation, the optimal result is

[0059] m=0.86, c=20.21mm, R 1 =57160mm, R 2 =9276mm, f=2.963X10 -5 mm

Embodiment 2

[0060] Example 2, please refer to Figure 4 , in order to verify its versatility, taking another bearing as an example, the effective length of the roller Lwe=39mm, the calculated Lundberg logarithmic equation is:

[0061]

[0062] The fitted curve is as Figure 4 shown. After calculation, the optimal result is

[0063] m=0.88, c=17.16mm, R1=48685mm, R2=6684mm, f=1.656X10-5mm

[0064] from image 3 and Figure 4 It can be seen that the arc curve and the logarithmic curve are highly consistent. The fitted curve has the characteristics of a logarithmic curve, which is beneficial to the uniform stress distribution of the roller during the working process. In the two cases, the proportion m of the lengths of the two arcs after fitting is different, which is obviously different from the traditional design method. In the design of the modified line profile, the proportion of the end arc length of the bearing products produced by a specific manufacturer is generally is fixe...

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Abstract

The invention discloses a kind of logarithmic profile roller and a manufacturing method, comprising a roller main body, the roller generatrix of the roller main body is at the effective length L of the roller we Within the range, the roller body includes an arc one and an arc two, and the radius of the arc one is R 1 , the radius of the second arc is R 2 . This type of logarithmic profile roller, its logarithmic profile is only composed of two arcs, and the two arcs have different proportions in the roller length (calculated). Curve fitting based on geometry makes the calculation more convenient. Simple, two arcs make processing and inspection more convenient and fast, and can realize the unity of design, processing, inspection and application in a true sense, because the similar logarithmic curve makes the line contact rolling bearing, there will be no internal edge stress concentration in application , to avoid early failures.

Description

technical field [0001] The invention relates to the technical field of rolling bearings, in particular to a logarithmic profile roller and a manufacturing method. Background technique [0002] Rolling bearings are industrial basic parts, which are used in almost all running machinery and occupy an important position in the national economy. [0003] Cylindrical roller bearings and tapered roller bearings are common and very important types in the rolling bearing family. Because the internal rollers are in the form of line contact, the bearings can bear large loads, so they are usually used in railways, wind power, construction machinery, metallurgy , mining and many other fields. [0004] Since the Hertzian contact stress in 1882, the contact problem inside the rolling bearing has attracted people's attention. In the linear contact cylindrical roller bearing and the tapered roller bearing, the linear contact roller edge will appear stress concentration, resulting in the ear...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16C33/34
CPCF16C33/34
Inventor 贾松阳潘隆王朋伟丁建强武全有范强刘高杰焦阳窦婉筠
Owner LUOYANG LYC BEARING
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