Gebr. Heller Maschinenfabrik Gmbh

Bsh Hausgerate Gmbh

Bsh Bosch Und Siemens Hausgerate Gmbh

Thomas Dorn

Jürgen Walz

Gebhard Mayer

The machine spindle arrangement () according to the invention forms a unit with a motor () as central element. At one side of the motor () a spindle neck () with a spindle () is flanged that is directly driven by the rotor () of the motor (). The spindle () is a so-called null spindle that can be replaced without readjustment with all bearings and other wear parts due to the present exactly adjusted positioning surface () that abuts against an axially properly defined bearing contact surface (). At the backside of the motor () facing away from the spindle (), a tool releasing device () and an angle adjustment transmission () is arranged that serves to rotate a present traverse feed shaft () relative to the spindle (). The traverse feed shaft () serves to actuate an adjustment device at the tool ().

Machine spindle assembly for a machine tool

The inventive working spindle comprises a spindle housing and a spindle shaft with axial positioning surface and axial contact surface by which the correct axial position of each fitting provided spindle shaft in the spindle housing is obtained. For torque-proof holding of the spindle shaft in the spindle housing, preferably with stationary motor, a braking unit is provided that comprises a radial outer part that is coupled with the spindle housing in a torque-proof manner and a radial inner part that is coupled with the spindle shaft in a torque-proof manner. The largest outer diameter of the peripheral surface of the inner part is smaller than the narrowest location of the through-opening of the spindle housing between the braking unit and the tool side end of the spindle housing. For this reason the spindle shaft can be readily removed from the spindle housing without disassembly measures of the braking unit, if required, and can be reinserted in reverse route. The inventive working spindle is simply constructed and can be versatilely used. Concurrently it is remarkably easy to maintain.

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Reutlingen, Germany

Thomas Dorn