公开(公告)号：US3533262A

公开(公告)日：1970-10-13

申请号：US3533262D

申请日：1968-08-08

Applicant: SENDZIMIR INC T

Inventor： SENDZIMIR MICHAEL G

IPC: B21B1/28 ,  B21B13/14 ,  B21B13/16 ,  B21B39/08

CPC classification number: B21B1/28 ,  B21B13/147 ,  B21B13/16

公开(公告)号：US3318130A

公开(公告)日：1967-05-09

申请号：US42457165

申请日：1965-01-11

Applicant: SENDZIMIR INC T

Inventor： SENDZIMIR MICHAEL G

IPC: B21B13/14 ,  B21B13/16 ,  B21B28/04

CPC classification number: B21B13/14 ,  B21B13/16 ,  B21B28/04

公开(公告)号：US3587279A

公开(公告)日：1971-06-28

申请号：US3587279D

申请日：1968-07-25

Applicant: SENDZIMIR INC T

Inventor： SENDZIMIR MICHAEL G ,  SEELING LEWIS R

IPC: B21B13/14 ,  B21B35/00 ,  B21B37/60 ,  B21B31/22

CPC classification number: B21B37/60 ,  B21B13/147 ,  B21B2035/005

Abstract: A FAST RESPONSE SCREWDOWN CONTROL SYSTEM ESPECIALLY USEFUL WITH THE SENDZIMIR TYPE CLUSTER MILL A MANUALLY SETTABLE INPUT IS PROVIDED FOR A SERVOCONTROLLER AS WELL AS A FEEDBACK FROM THE SCREWDOWN TRAIN TO THE SERVOCONTROLLER WHEREBY

GAUGE MAY BE ACCURATELY MAINTAINED WITH THE SERVOCONTROLLER OPERATING A HYDRAULIC ROTARY ACTUATOR THROUGH VARIOUS VALVES.