公开(公告)号：US3566129A

公开(公告)日：1971-02-23

申请号：US3566129D

申请日：1969-04-28

Applicant: STEWART WARNER CORP

Inventor： BARDWELL FRANCIS G ,  MAZUR RICHARD A

IPC: B23Q35/14 ,  G01N21/30 ,  G05B1/00

CPC classification number: B23Q35/14

Abstract: A pattern contour-tracing system which is capable of intercepting and locking on the pattern contour from a position removed from the contour without the use of a leadin contour. The pattern contour-sensing head is pointed so as to travel in a line toward the contour with the sensing head steering means locked out until the sensing means detects that the sensing is within a predetermined distance of the contour. The steering means is then unlocked so that the sensing head can be automatically steered by the servo means to make a smooth transition into the path defined by the pattern contour. A photosensitive tracing system is disclosed which is operable to lead into and trace the pattern contour whether the contour is defined by a line or an edge.