Grinding machine for grinding of workpieces with an internal profile

Abstract

A grinding machine for grinding of workpieces with an internal profile, having a grinding arm in which at least one grinding wheel is supported for grinding of the profile of the workpiece and a reception which is arranged at the grinding machine for holding the grinding arm. To facilitate the change of the grinding arm and thereby nevertheless to ensure a precise position of the same relatively to the reception the invention proposes that the grinding arm comprises at least two clamping pins being spaced apart from another and that the reception comprises two corresponding recesses for the reception of the clamping pins, wherein in the reception locking means are arranged by which the clamping pins can be locked in the recesses so that the grinding arm is detachably fixed in a defined position relatively to the reception.

We claim: 
     
         1 . A grinding machine for grinding of workpieces with an internal profile, comprising a grinding arm in which at least one grinding wheel is supported for grinding of the profile of the workpiece and a reception which is arranged at the grinding machine for holding the grinding arm, wherein the grinding arm comprises at least two clamping pins being spaced apart from another and that the reception comprises two corresponding recesses for the reception of the clamping pins, wherein in the reception locking means are arranged by which the clamping pins can be locked in the recesses so that the grinding arm is detachably fixed in a defined position relatively to the reception, wherein the grinding arm comprises a driving shaft by which the grinding wheel can be driven, wherein the driving shaft is torque proof connected with a coupling element and wherein in the reception a driving element is arranged which can be brought into torque proof connection with the coupling element. 
     
     
         2 . The grinding machine according to  claim 1 , wherein the coupling element is designed as profile element which comprises around the circumference a plurality of radial protruding projections, wherein the driving element comprises a shape which is complementary to this. 
     
     
         3 . The grinding machine according to  claim 1 , wherein the coupling element is designed as part which projects from the base contour of the grinding arm, wherein the driving element in the reception comprises a recess for entry of the coupling element. 
     
     
         4 . The grinding machine according to  claim 1 , wherein the rotational movement of the driving shaft is transmitted to a shaft via a belt or a chain which shaft is connected torque proof with the grinding wheel. 
     
     
         5 . The grinding machine according to  claim 1 , wherein in the grinding arm and in the reception detachable coupling means are arranged for the transmission for a fluid under pressure. 
     
     
         6 . The grinding machine according to  claim 5 , wherein the coupling means are designed for the transmission of oil or cooling lubricant. 
     
     
         7 . The grinding machine according to  claim 1 , wherein in the grinding arm and in the reception detachable contact means are arranged for the transmission of electricity or of electrical signals. 
     
     
         8 . The grinding machine according to  claim 1 , wherein at or in the grinding arm a storage element is arranged on which grinding arm specific data can be stored. 
     
     
         9 . The grinding machine according to  claim 8 , wherein the storage element is designed as a RFID transponder.