Positioning pin deviation device

The utility model provides a locating pin deviation device which comprises an air cylinder and a sliding piece connected with the air cylinder, the tool locating device further comprises a pair of guide rails located on the two sides of the air cylinder and a box body containing the air cylinder and the guide rails, and the sliding piece is provided with a main body and a pair of arm parts extending out of one side of the main body. The air cylinder is provided with a telescopic guide rod fixedly connected with the main body, and the pair of arm parts are directly or indirectly fixed on the pair of guide rails. Compared with the prior art, the sliding piece can achieve stable, reliable and high-precision linear telescopic movement along the guide rail through matching with the double rails, and the double-rail structure has higher rated load capacity and can bear larger eccentric bearing moment, so that the sliding piece has more stable and more accurate telescopic movement capacity; therefore, it is guarante