Torque transmitting device
AssigneePlica Werkzeugfabrik AG
InventorErich Runge
Life of this patent
Estimating the term…
Abstract
A device provided on machine tools for transmitting torque onto tools, comprising at least two diametrically opposite rotary driving grooves openly issuing at the end of the tool shank and rotary drivers engaging in these and at least one locking member being disposed in the tool seat to be radially movable for engagement in a locking groove in the tool shank closed at both ends in the axial direction, wherein the rotary drivers comprise a cross section tapered in the direction of the rotary axis to have a stepped shape and, respectively, at least two rotary driving surfaces mutually offset to have a stepped shape for reducing susceptibility to wear. A tool for insertion in such a device.
Claims14
A device provided on machine tools for transmitting torque onto tools, comprising at least two diametrically opposite rotary driving grooves (7) openly issuing at the end of the tool shank (3) and rotary drivers (8) of the machine tool seal (1) engaging in these and at least one locking member (5) being disposed in the tool seat (1) to be radially movable for engagement in a locking groove (4) in the tool shank (3) axially closed at both ends, characterized in that each rotary driver (8) is symmetrical about a first plane which extends in an axial direction through a rotary axis and through a center of each of the rotary drivers (8), the rotary drivers (8) are symmetrical about a second plane which extends in an axial direction through the rotary axis, the first and second planes are perpendicular to each other, and each of the rotary drivers (8) have a cross-section which includes a step-shaped taper at each of two flanks, and at least two mutually offset driving surface (F1, F2) at each of the step-shaped tapers.
A tool for insertion in the receiving bore (2) of a tool seal (1) of a machine tool comprising at least two rotary drivers (8) diametrically opposite to each other and at least one locking member (5) being disposed to be radially movable, said tool having at least two rotary driving groves (7) diametrically opposite to each other, openly issuing at the end of the tool shank (3) and at least one locking groove (4) in the took shank (3) closed at both ends in the axial direction, characterized in that each groove (7) is symmetrical about a first plane which extends in an axial direction through a rotary axis and through a center of each of the rotary driving grooves (7), the rotary driving grooves (7) are symmetrical about a second plane which extends in an axial direction through the rotary axis, the first and second planes are perpendicular to each other, and each of the rotary driving grooves (7) have a cross-section which includes a step-shaped taper at each of two flanks, and at least two mutually offset driving surfaces (f.sub.1, f.sub.2) at each of the step-shaped tapers.
Dependencies are inferred from the claim text.