Patent ID: 7497766

Claim:
A tool-holding device for an insert tool ( 14 ) equipped with an at least essentially disk-shaped hub ( 42 ), for a hand-guided angle grinder ( 32 ) or a hand-guided circular saw, having a drive shaft ( 16 ) and a drive device ( 12 ) equipped with at least one locking element ( 20 ), wherein the locking element ( 20 ) is supported so that the locking element ( 20 ) is able to move in relation to a spring element ( 18 ) in order to fix the insert tool ( 14 ) in a form-locked manner in the circumference direction ( 50 , 52 ), wherein the drive shaft ( 16 ) has at least one form-locking element ( 100 ) formed onto the drive shaft ( 16 ) in a non-cutting manner in order to connect the drive shaft ( 16 ) in a form-locked manner in the circumference direction ( 50 , 52 ) to a drive torque-transmitting mechanism of the drive device ( 12 ), wherein the mechanism of the drive device ( 12 ) is comprised of a drive flange ( 10 ) that constitutes a contact surface ( 30 ) of the insert tool ( 14 ), wherein the contact surface ( 30 ) is oriented opposite with respect to a machine tool side of the drive flange ( 10 ), and is provided with arc-shaped grooves ( 66 ) for self-cleaning purposes and wherein the mechanism of the drive device ( 12 ) is supported on the drive shaft ( 16 ) by means of a spacer element ( 108 ).