FIELD: machine building.
SUBSTANCE: invention relates to a tool chucking device, especially an oscillation tool chucking device. Chucking device comprises at least one chucking unit which has at least one chucking element for clamping a treatment tool in an axial direction, extending along spindle of process machine, having at least one control unit for acting on chucking element. Control unit has a control member configured for rotation and made in form of lever (36). Device is equipped with at least one conversion unit for changing gear ratio depending on at least one component of motion of control member of control unit so that force applied to lever for turning thereof, remains virtually constant at angle of opening of lever.
EFFECT: technical result consists in ensuring smooth movement of rotary lever of control member.
10 cl, 7 dwg
