Improving the accuracy of machining of non-rigid shaft

Abstract

So far, due to much more strict events of operating parameters requirements, the reduction of pieces steel intensity allows to produce multiplying quantity of the highly precise Non-Rigid Pieces (NRP); most of them are supposed to be the shafts in amount. The creation of Automatic Control Systems (ACS) by mechanical operating also involves highly precise NRP production. In present paper there is Self-Centering Rest (SCR) operating hydrocylinder piston rod control system presented; it causes influence directly to the rest centering accuracy. The plant processing does not require hydrostation and pipeline; it possesses highly precise centering and it is able to function either in shaft support mode, or in active dampening one. There is the original scheme of double acting sealed hydrocylinder presented. There is the functional control scheme of hydraulic power cylinder presented. There are results of the non-rigid shaft axle research while turning presented. Thus, the beat reduction of the rigid shaft while turning in SCR system reaches 3...16 times in comparison.

Modeling the Deformation of Non-Rigid Shafts during Turning on CNC Machines

“…The most significant are the dependencies connecting such physical quantities as displacements deformations and stresses. In the finite element method, there are two types of models [7]: linear and non-linear. Moreover, linearity and non-linearity can refer to both the geometry of the model and its material model is considered linear if under the influence of loads it has small deformations, and the relationship between deformations and stresses is linear, i.e.…”