Abstract
Accuracy Control in the Process of Low-Rigidity Elastic Deformable Shafts Turning
Highlights
Elastic-deformable shafts with low rigidity are more and more frequently used in various mechanisms and machines
This paper presents the problem of control of accuracy of forming elastic-deformable shafts with low rigidity, and namely the control of elastic-deformable state of semifinished product with low rigidity through the effect of additional force factors under conditions of lateral bending, permitting the achievement of uniform stiffness of the shaft at the point of application of machining force, and a significant increase of the accuracy of shaft formation in the course of turning
The provided analysis of machining errors of the drive shafts manufactured in conformance with the company technology shows that even after two turning passes their accuracy was insufficient and grinding was performed at non-uniform material allowance exceeding 0,3 mm, which causes an increase of the time and cost of machining
Summary
Elastic-deformable shafts with low rigidity are more and more frequently used in various mechanisms and machines. Axial-symmetrical parts account for approximately 34%, and among those up to 12% can be classified as shafts with low rigidity [4, 5] In spite of their diverse functionality and design features of those parts, they can be classified into one group based on a uniform classification parameter – shape (bodies of rotation). Such elements must meet stringent requirements with regard to form accuracy and surface position, linear dimensions and quality of outer surface. This paper presents the problem of control of accuracy of forming elastic-deformable shafts with low rigidity, and namely the control of elastic-deformable state of semifinished product with low rigidity through the effect of additional force factors under conditions of lateral bending, permitting the achievement of uniform stiffness of the shaft at the point of application of machining force, and a significant increase of the accuracy of shaft formation in the course of turning
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