TOOL HOLDER TO ALLOW TOOL INTERFERENCE FIT Russian patent published in 2010 - IPC B23B31/02 

FIELD: process engineering.

SUBSTANCE: holder comprises shaft to joint with mechanical machine tool and chuck with head and base. Note here that said chuck comprises clamping part in its head. Clamping part comprises receiver made up of axial groove to grip tool shaft and central part 3 arranged between joint shaft and base. Note here that chuck has front diametre on head facing the tool and rear diametre in base 5 facing central part. Note also that outline connecting front and rear diametres has at least two invariable sections relative to outline diametre. Besides, first part is arranged on the head, while second is located in the base, while transition is located between head and base. Note that chuck diametre widens irregularly on transition from first part to second part so that chuck head is thinner than its base. Note here that chuck outline diametre widens on transition from first part to second part toward the bas at 0° to 50°, preferably, from 10° to 40°, and particularly 30°.

EFFECT: higher reliability.

9 cl, 4 dwg