Patent ID: 9353832
Filing Date: 2016-05-31
CPC Classification: F16H

Claim Text:
1. An apparatus with a multi-stage power shifting means being mounted between an external power source and a power transmission mechanism of a machine tool, said apparatus comprising: a housing body; a first transmission device disposed in said housing body, said first transmission device including a first gear set connected to said external power source, a first internal gear meshing with said first gear set, a first fixing plate fixed to said housing body and a first engaging part capable of meshing with said first gear set, said first internal gear and said first fixing plate; a second transmission device disposed in said housing body, said second transmission device including a second gear set interacting with said first transmission device and driving a rotation of said power transmission mechanism, a second internal gear meshing with said second gear set, a second fixing plate fixed to said housing body and a second engaging part capable of meshing with said second gear set, said second internal gear and said second fixing plate; a coupling device disposed in said housing body and respectively connected to said first transmission device and said second transmission device whereby said coupling device transmits a power of said external power source from said first transmission device to said second transmission device; and a controller comprising a first control unit pivotally connected to said first engaging part, a second control unit pivotally connected to said second engaging part and a driving system disposed in relation to said first control unit and said second control unit for controlling movement of said first control unit and said second control unit.