Error Analysis of Machine Tools Using Form Shaping Function.

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  • 形状創成関数理論による工作機械の誤差解析
  • ケイジョウ ソウセイ カンスウ リロン ニ ヨル コウサク キカイ ノ ゴサ

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Abstract

The need for higher accuracy on machined components is always a matter of concern. Accuracy of machined component is determined by the relative motion between the cutting tool and the workpiece. One of the important factors which affects the accuracy of this relative motion is the geometric error of machine tools. Therefore, it is necessary for relating the geometric errors of each structural element to the resultant cutting point error. In this study, for the expression of the relative motion of machine tool elements, a mathematical model utilizing homogeneous transformation matrix multiplications is developed assuming the rigid body kinematics. By applying proposed mathematical model, each geometric error which affects the resultant error can be identified separately. The influence of characteristic configurations of machine tools on the machining error is also investigated.

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