公开(公告)号：JPH03199901A

公开(公告)日：1991-08-30

申请号：JP26930490

申请日：1990-10-06

Applicant: ESSILOR INT

Inventor： PASUKARU DABUUDO ,  MANIYUERU GARARUDO ,  AAMEDO ADAADEI

IPC: B24B9/14 ,  B25H7/00 ,  G01B5/00 ,  G01B5/20 ,  G01B21/00 ,  G01B21/20 ,  G02C13/00

Abstract: PURPOSE: To use a contour tracking device regardless of whether an article to be read for contour is the rim or template of a spectacle frame by rotating the rotatable contact head of a feeler by means of a driving means. CONSTITUTION: The contact head 19 of a feeler 18 is brought into contact with an article to be read for contour supported by a holding means 16 mounted on a supporting table 14 by moving a reciprocating table 20 supporting the head 19 by means of a motor gear box unit 26. The feeler 18 is driven and, therefore, the unit 26 which drives the head 19 is started. The head 19 follows the contour of the article to be read for contour with a contact pressure adjusted by a torque limiter 52. A sensor 36 reads the angular position of a supporting body 21 and also the linear position of the table 20 along a guide 39. Therefore, the polar coordinates of the feeler 18 are always recognized. The pressure of the head 19 applied to the article is adjusted by the limiter 52 incorporated in the driving system of the table 20.