New Measuring Method of Circular Movement of NC Machine Tools : Development of Alternative Method for Standardization

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In this paper, we describe an alternative method based on a new idea for measuring the circular movement of machining centers. ISO has employed three methods for the acceptance tests of machine tools : the first is a rotating one-dimenional probe method, the second utilizes a two-dimensional probe and a master circular ring, and the third utilizes a kinematic ball bar. At present, it is necessary to develop an alternative method with no relation to the latter two methods because their patents are pending. We have developed an alternative method by improving the rotating one-dimensional probe method. The newly developed method is superior to the other two methods ; the rotation angle can be detected and the rotation radius is variable. The effectiveness of the developed method is confirmed experimentally.

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