Patent ID: 8364441
Filing Date: 2013-01-29
Classification: G01B

Abstract:
1. A surface texture measuring device, comprising: a contact piece having a tip capable of contacting with an actual measuring target; first pseudo measurement point sequence obtaining means operative to drive the contact piece such that the contact piece traces a surface of a reference workpiece having a reference shape, and obtain a locus of a certain position of the contact piece as a first pseudo measurement point sequence; contact piece model calculating means operative to calculate, based on the first pseudo measurement point sequence and a design surface specifying the surface of the reference workpiece, a contact piece model representing a surface shape of the contact piece and placed in a pseudo space; second pseudo measurement point sequence obtaining means operative to place the contact piece model such that a surface of the contact piece model contacts a reference surface specifying a surface of the actual measuring target and that the contact piece model takes a same posture as that taken by the contact piece during a measurement, and calculate a reference position of the contact piece model as a second pseudo measurement point sequence; and replacement determination means operative to determine whether or not to replace the contact piece based on the second pseudo measurement point sequence.