Apparatus with the multi-stage power shifting means applied to a machine tool

摘要

An apparatus with the multi-stage power shifting means applied to a machine tool includes a housing body, a first transmission device and a second transmission device disposed in the housing body, a coupling device connected to the transmission devices and a controller controlling the gear shifting motion of the transmission devices. The controller includes two control units pivotally connected to respective engaging parts of the transmission devices and a driving system capable of moving the control units. When a power is sequentially transmitted from an external power source to the first transmission device, the coupling device, the second transmission device and then to a power transmission mechanism, the controller adjusts the mode of meshing the engaging parts with other correlated elements in the transmission devices to attain different output torque and speed values, the multi-stage shifting effect and the torque multiplying effect without increasing the bulk.

主权项

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.