Dimensional change tendency following type automatic gaging amendment manner

摘要

PURPOSE: To stabilize dimension control of a work on which dimensional toler ance is severe while using width of the dimensional tolerance effectively by carrying out X axis correction while adding a tendency correction value to a usual correction value only when it is in the same tendency after a tendency of a dimensional change is ascertained. ;CONSTITUTION: A diameter of a continuously worked work W is measured by a measuring sensor 17, and a measured value (a) is outputted from a measuring part 18, and the measured value (a) is compared with a central value (b) of dimensional tolerance, and a dimensional error (c) is found. When the obtained dimensional error (c) enters (±) OK area, and only when a tendency of the prescribed number of dimensional errors immediately before these are stored in an error data storage part 32 is in the same tendency, a tendency correction value (α) to be stored in a tendency correction value storage part 35 is added to a correction value C, and X axis correction is carried out.;COPYRIGHT: (C)1994,JPO&Japio