公开(公告)号：US10221992B2

公开(公告)日：2019-03-05

申请号：US14206775

申请日：2014-03-12

Applicant: ROLLS-ROYCE PLC

Inventor： Adam George Antrum Rushworth ,  Dragos Aurelian Axinte ,  John Marcus Allen ,  James Kell ,  Ralph Graham Anderson

IPC: F16M11/20 ,  B25J9/00 ,  B25J17/02 ,  B62D57/032

Abstract: A tool holder. The tool holder is mounted to a platform (9) and comprises a plurality of legs (1) extending from respective positions on the platform (9) for connecting the platform (9) to respective positions on the workpiece. Each leg (1) has a first joint system (8a) at its platform end allowing each leg (1) to pivot relative to the platform (9). Each first joint system (8a) has an actuator arrangement (34) having a first operating mode in which the actuator arrangement (34) is configured to apply a load to move the respective leg (1), and a second operating mode in which the actuator arrangement (34) is configured to allow free movement of the respective leg (1).