Power-off motion compensation device for servo driver

The utility model relates to the technical field of machining, and discloses a servo driver power-off motion compensation device which comprises a linear sliding rail, an infrared distance meter is installed on the inner wall of one side of the linear sliding rail, a strip-shaped sliding groove is formed in the middle of the linear sliding rail, a lifting sliding block is embedded in the strip-shaped sliding groove in a sliding mode, and the lifting sliding block is connected with the linear sliding rail in a sliding mode. One end of the lifting sliding block is fixedly connected with a carrying platform, the other end of the lifting sliding block is fixedly connected with a compensation operation table, an adjusting groove is formed in the compensation operation table, the drilling movement of a drill bit in a normal state is simulated firstly, and the measurement result can be obtained under the condition that only an infrared distance meter and a servo driver body are relied on. After the drilling error he