公开(公告)号：US20180017954A1

公开(公告)日：2018-01-18

申请号：US15638932

申请日：2017-06-30

Applicant: MITUTOYO CORPORATION

Inventor： Takashi NODA ,  Hiromi DEGUCHI ,  Norihiko MURATA

IPC: G05B19/401 ,  G01B21/20 ,  G01B5/008 ,  G05B19/04 ,  G01B21/04

CPC classification number: G05B19/401 ,  G01B5/008 ,  G01B21/04 ,  G01B21/042 ,  G01B21/20 ,  G05B19/041 ,  G05B2219/37043 ,  G05B2219/37374 ,  G05B2219/37411 ,  Y02P90/265

Abstract: A probe displacement command in a scanning measurement is generated according to a composite speed vector V: V=Gf·Vf+Ge·Ve+sp(p)·Gc·Vc2 wherein Vf is a vector along which a probe is displaced along a scanning path, Ve is a vector maintaining a deflection amount of the probe toward a work piece at a standard deflection amount. Vc2 is represented by (Vc1·q)q, Vc1 is a vector in a direction correcting a probe position such that a stylus tip is oriented along a scanning course, q is a vector given by a vector product of the normal line of a surface of the work piece and Vf, The normal direction of a measured surface is designated as Nw, p is a scalar product of Vc2 and Nw, and sg(p) is a function returning +1 or −1 in accordance with a value of p.