F - Mech Eng,Light,Heat,Weapons – 16 – H
Patent
F - Mech Eng,Light,Heat,Weapons
16
H
F16H 25/22 (2006.01) B29C 45/50 (2006.01) B29C 45/58 (2006.01) F16H 25/20 (2006.01) B29C 45/40 (2006.01) B29C 45/66 (2006.01)
Patent
CA 2381132
The present invention provides a ball screw device for linear movement, which moves a working body by using a single of a plurality of ball screw shafts and ball screw nuts. In the ball screw device, a plurality of ball screw nuts are engaged threadedly with the same ball screw shaft. Also, one of the ball screw nuts on each ball screw shaft is attached to the working body via a fixed flange, the single fixed flange or one of the fixed flanges, is provided with a load sensor, and other ball screw nuts serve as a fluid pressure supporting mechanism using a cylinder and a piston. A fluid pressure is controlled so that the support force of the fluid pressure supporting mechanism is equal to the pushing force detected by the load sensor. By this configuration, a large load can be distributed evenly to the ball screw nuts.
Ishiwada Takeshi
Kohno Kazukiyo
Kubota Koji
Yamamoto Yoshito
Fetherstonhaugh & Co.
Mitsubishi Heavy Industries Ltd.
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