親ねじ磨耗のシミュレーションに関する基礎的研究 : 円筒モデルの提案と基礎実験

概要

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A method is discussed in which the wear process in the leadscrew-nut system is simulated using a couple of cylindrical models proposed. To simplify the contact condition geometrically between screw and nut with trapezoidal thread profile, a couple of cylindrical models touching each other in the end surfaces is applied. The wear of the practical leadscrew is simulated by observing the wear depth at the end surface of the cylindrical model corresponding to the wear depth at the flank of thread. In order to evaluate the propriety of the cylindrical model, the wear tests of the practical leadscrews and the simulation tests with the cylindrical models are performed. In the simulation tests, the testing conditions, such as the materials of specimens, the type of lubricant, the contact area ratio, the contact pressure and the sliding speed, are similar to those in the practical tests. It is considered on the basis of the experimental results that the lubricating condition and the wear character along the frictional surfaces of the simulator are corresponding to those of the practical system, and a prospect is obtained that the simulation for the leadscrew wear is possible by the cylindrical model within the limits of the condition set in this study.
公益社団法人精密工学会の論文
1986-01-05