METHOD OF CONTROL OF MACHINING ACCURACY OF LOW-RIGIDITY ELASTIC-DEFORMABLE SHAFTS

Authors

  • GRZEGORZ LITAK DEPARTMENT OF APPLIED MECHANICS LUBLIN UNIVERSITY OF TECHNOLOGY
  • ANTONI SWIC
  • DARIUSZ WOLOS

Keywords:

LOW RIGIDITY SHAFT, CONTROL OF MACHINING ACCURACY, MATHEMATICAL MODELS OF MACHINING, EFFICIENCY, MECHANICS OF MACHINE TOOLS

Abstract

       THE PAPER PRESENTS AN ANALYSIS OF THE POSSIBILITY OF INCREASING THE ACCURACY AND STABILITY OF MACHINING OF LOW-RIGIDITY SHAFTS WHILE ENSURING HIGH EFFICIENCY AND ECONOMY OF THEIR MACHINING. AN EFFECTIVE WAY OF IMPROVING THE ACCURACY OF MACHINING OF SHAFTS IS INCREASING THEIR RIGIDITY AS A RESULT OF ORIENTED CHANGE OF THE ELASTIC-DEFORMABLE STATE THROUGH THE APPLICATION OF A TENSILE FORCE WHICH, COMBINED WITH THE MACHINING FORCE, FORMS LONGITUDINAL-LATERAL STRAINS. THE PAPER ALSO PRESENTS MATHEMATICAL MODELS DESCRIBING THE CHANGES OF THE ELASTIC-DEFORMABLE STATE RESULTING FROM THE APPLICATION OF THE TENSILE FORCE. IT PRESENTS THE RESULTS OF EXPERIMENTAL STUDIES ON THE DEFORMATION OF ELASTIC LOW-RIGIDITY SHAFTS, PERFORMED ON A SPECIAL TEST STAND DEVELOPED ON THE BASIS OF A LATHE. AN ESTIMATION WAS MADE OF THE EFFECTIVENESS OF THE METHOD OF CONTROL OF THE ELASTIC-DEFORMABLE STATE WITH THE USE, AS THE REGULATING EFFECTS, THE TENSILE FORCE AND ECCENTRICITY. IT WAS DEMONSTRATED THAT CONTROLLING THE TWO PARAMETERS: TENSILE FORCE AND ECCENTRICITY, ONE CAN IMPROVE THE ACCURACY OF MACHINING, AND THUS ACHIEVE A THEORETICALLY ASSUMED LEVEL OF ACCURACY.

Author Biography

GRZEGORZ LITAK, DEPARTMENT OF APPLIED MECHANICS LUBLIN UNIVERSITY OF TECHNOLOGY

PROFESSOR AT THE DEPARTMENT OF APPLIED MECHANICS, LUBLIN UNIVERSITY OF TECHNOLOGY

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Published

2013-06-27

Issue

Vol. 11 No. 2 (2014)

Section

Articles

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