Oblon, Fisher, Spivak, McClelland & Maier
Workpiece transfer apparatus for machine tool
 A workpiece transfer apparatus for transferring a workpiece for a machine tool. A first crank arm is rotatably supported and rotatably supports a planet gear engaging with a stationary gear and a driven gear engaging with the planet gear. A second crank arm is secured to the driven gear and fixedly supports a crank pin. A connecting member for lifting and lowering a workpiece grip device is pivotably connected to the crank pin. The crank pin has a cam member secured thereto. An operating member is provided with a cam follower engaging with the cam member and is operatively connected to the workpiece grip device for opening and closing the same in accordance with the shape of the cam member. 
Toyoda Koki Kabushiki Kaisha
B B B
B25J B23Q B25J
inventional inventional inventional
Teruyuki Yasuo
Ito Suzuki