Analysis of ways and methods of deformation measuring of rigid mounted axially symmetrical device elements.

Abstract

In this article some technologies of modern devices manufacturing are reviewed which are intended to achieve the needed device accuracy. The imprecision of sensing element (SE) manufacturing and different factors influencing on it are observed too. Functioning of axially symmetric non-ideal gear under high-frequency load leads to deflection of SE axis from vertical direction which is result of unbalanced mass and moments influence. Many researches were devoted to develop some methods of this disbalance evaluation. Some of them are based on theoretical approaches to disbalance elimination, but it is impossible to make it real even on contemporary technology achievements. In other researches the procedure is sufficiently simplified but it could not reach the needed accuracy of balancing. The solutions are known which allow to evaluate the deflection of SE axis under load throughout the shift of the bar free end but such processing is made not for the final stage of manufacturing. Thus the additional structural element is in the SE design. After removing this additional element the balancing of the SE could be ruined. In this article the other method of deformations evaluation in dynamics is offered when the shift caused by non-ideal SE condition needs appropriate balancing. The rigid mounting of the SE is offered, when the base end of the bar is fixed and the other end becomes free after last technological operation. The procedure of measuring of the shifts caused by unbalancing masses and moments is made through the bar mounting place. The questions of unbalancing mass and moments influence on shifts values in the sensors balance area are studied. According to the given geometry and physical and mechanical properties of sensors the best combinations of geometry and device sizes are offered with mounting area restrictions and shifts measuring kept in mind.