Technology of Machine Tools. Supplement 1. Testing of Accuracy of NC Machine Tools.

摘要

The state of the art of accuracy testing, a concept, basic explanations, definitions, methods, and a list of tests are presented here as a general proposal for a standard test that corresponds to the present state of the art of metrology of numerically controlled machine tools. The three main basic features of this system are: it is a non-machining system of tests which could be called tracing of a universal master part; it is an essentially non-statistical test which assumes that the individual sources of errors and their motions can be, to a reasonable extent, isolated and systematically combined; and the tests are formulated from the user's and not from the builder's point of view, and they are related to the accuracy of the workpiece. The basic measurements of translational and rotational errors, the effects of machine deformation and of temperature, and the tolerances permitted in milling, boring, and turning machine operations are discussed. (ERA citation 06:005162)