Slide characteristic value evaluation method, material selection method and design method of mechanism part

Abstract

The invention relates to an estimate method of a sliding characteristic value, a material selection method and a designing method of a component. A critical sliding speed and a critical PV value of a lateral discontinuous sliding are estimated according to a critical PV value of bilateral continuous sliding measured by a hollow cylindrical testing sheet. In the lateral discontinuous sliding as a sliding way, when the sliding characteristic value composed of the critical sliding speed Vi and the critical PV value Pvi of the lateral discontinuous sliding at a loading capacity Wi, a contact area Si and a surface pressure Pi is estimated, the critical sliding speed Vt of the bilateral continuous sliding of a contact area St is calculated according to a critical PV value Pvt of the bilateral continuous sliding by a special formula when the loading capacity is Wi; the critical sliding speed Vi of the lateral discontinuous sliding is calculated according to the critical PV value Pvw of the bilateral continuous sliding by a special formula when the surface pressure of the loading capacity W is Pi; and the critical PV value Pvi of the lateral discontinuous sliding is calculated by a special formula according to needs.

Description

technical field [0001] The present invention relates to a method of estimating a critical slip velocity and a critical PV value of a resin sliding part, a method of selecting a material of a resin sliding part and a method of designing a mechanism part of a sliding part using the estimated value as an index. Background technique [0002] The application of resin in mechanism parts starts from replacing metal, using polyacetal, polybutylene terephthalate, polyamide, polyphenylene sulfide, etc. At present, independent development is foreseen in addition to replacing metals, and dozens of plastics are utilized for various purposes by making use of their respective strengths. [0003] One of the important reasons for substituting metal is that it can be used without oiling the sliding parts. However, with the expansion of applications and the improvement of performance requirements, the material itself has progressed, and it is possible to realize "oil-free" under a wider range ...

AI Technical Summary

Problems solved by technology

Therefore, much work and time are required, and a simple method for estimating the critical PV value is required in order to develop resin sliding parts in a short period of time.

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