Automatic measuring and tool position compensating system for a numerically controlled machine tool
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United States of America Patent
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Mar 25, 1980
Grant Date -
N/A
app pub date -
Nov 28, 1977
filing date -
Dec 8, 1976
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In an automatic measuring apparatus and method for a numerically controlled machine tool, the dimension of a stylus secured to a cross slide and a desired dimension between two opposite points on a workpiece to be measured are inputted into an automatic measuring device in advance, the cross slide is moved under numerical control to bring the stylus into contact with the two points and to remove the stylus therefrom, and measurement of the amount of movement of the cross slide is started when the stylus leaves from one of the two points and the measurement is ended when the stylus leaves from the other point. The measurement value thus obtained, the dimension of the stylus and the desired dimension are subjected to addition and subtraction, thereby to automatically measure the actual dimension between the two points, and the difference between this actual dimension and the desired dimension.
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