Clamping fixture for machining motor shell

The utility model provides a clamping fixture for machining a motor shell, which comprises an outer shell, a mounting part is mounted in the outer shell, a mounting groove is formed in the upper side of the mounting part, a limiting rod is mounted in the mounting groove, a moving part is mounted on the side surface of the limiting rod, a pressing block is arranged on one side of the moving part, and a sliding rod penetrates through the inner side of the moving part. The sliding rod is mounted in the mounting part, a spring is mounted on the side face of the sliding rod, a moving block is arranged on the lower side of the moving part, and a limiting block is mounted on the upper side of the moving block; a hydraulic rod is controlled to drive a moving block to move, the moving block drives a limiting block to move, the moving block and the limiting block drive a moving piece to move under the limitation of a limiting rod and a sliding rod, the moving piece compresses a spring, and then the moving piece drives