POWER HEAD Russian patent published in 1998 - IPC

FIELD: machine-tool industry. SUBSTANCE: two tooth pairs 4,5 with internal gearing kinematically connect epicyclic-gear-train 6 of feeding power head with engine 2. Sun gear 1 is connected to the first tooth pair 4. Sun gear 11 is made as a whole with translation screw 12 of the screw pair. The screw pair has nut 13 on the external surface of quill 3. Quill 3 is built into carrier 14, electromagnetic couplings 15,16 are mounted on the sun gear 17 of the epicyclic-gear-train 6. Electromagnetic coupling 16 is connected to the tooth pair 5, electromagnetic coupling 15 is connected to housing 1. The couplings mentioned are used for feed control. EFFECT: simplified structure, decreased size of the head. 2 dwg