TRANSFER MECHANISM Russian patent published in 2012 - IPC B25F5/00 B25D11/06 B23Q5/02 E21C37/24 

FIELD: machine building.

SUBSTANCE: invention relates to mechanisms for torque transfer and may be used in perforators and/or chisel hammers. The transfer mechanism comprises a torque transfer facility comprising the first profiled section for torque transfer in interaction with the first part, the second profiled section for torque transfer in interaction with the second part and an intermediate section. The first profiled section and the second profiled section are arranged with at least partial match of profiles designed for transfer of torques. The intermediate section is arranged between the first profiled section and the second profiled section and has a radius reduced relative to the first profiled section and the second profiled section. The first profiled section has a radius of circumference of teeth tops, which is smaller than the radius of circumference of teeth tops in the second profiled section with identical radii of groove circumference.

EFFECT: invention provides for efficient transfer of torque and simple manufacturing of profiled sections of a torque transfer facility.

7 cl, 4 dwg