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Many researches on measurement and evaluation method of rotational accuracy of machine tools’ spindles has been carried out, since it greatly affects machining accuracy. However, major factor influencing directly on the machining accuracy is behavior of rotational motion of the tool axis and then it can be said that the on-machine measurement and evaluation of the behavior is very important. In this study, therefore, the measurement principle and error factors are considered in design of the device for measuring the axis motion behavior of the rotational tool with various shapes. The results obtained here are as follows. (1) Measurement principle of behavior of the rotational axis motion of the tools with various shapes could be proposed. (2) The proposed principle is applicable to various types of rotary tool such as end mills and drills. (3) It is also applicable to the measurement of tool wear. (4) The allowable range of error factors in designing and making of the device was made clear.

nihon kikai gakkai ronbunshū. c

Development of On-Machine Measurement System for Axis Motion Behavior of Rotational Tools with Various Shapes (Consideration of Measurement Principle and Error Factors)