Patent ID: 9527136
Filing Date: 2016-12-27
CPC Classification: B23B,Y10T

Claim Text:
1. A clamping device of a balancing machine for coaxially clamping a toolholder on a spindle rotary about an axis of rotation, said spindle including at a frontal end a coaxial receiving socket and said toolholder including a coupling shank axially insertable into the frontal end of the spindle, said coupling shank being adapted to be axially clamped in place in the receiving socket by means of releasable clamping means, wherein at least one inner locating surface in the receiving socket, at least one outer locating surface on the coupling shank and, where applicable, one further engaging surface cooperate in order to support the toolholder in coaxial position radially and axially on the spindle, wherein the supporting of the coupling shank in the receiving socket takes place only on discrete supports spaced from each other circumferentially, wherein a first and a second one of the discrete supports are formed by inner and outer locating surfaces and define, in combination, a rigid support in a first radial direction, wherein a third one of the discrete supports is formed by a radially adjustable first supporting element and defines a support in a second radial direction opposite the first radial direction, and wherein the radially adjustable supporting element is carried for radial movement on the spindle or the toolholder and is adjustable against the force of a spring.