The utility model discloses a
harmonic drive type arc
trimmer. Including bottom plate, curvature coarse adjustment unit, curvature fine adjustment unit, high accuracy rotation unit,
diamond pen, the curvature coarse adjustment unit includes coarse adjustment support, and the coarse adjustment support is set up on the bottom plate and can move to X axle direction, and the coarse adjustment support is C type structure, the high accuracy rotation unit includes rotation frame, rotation rigid drive unit, and the rotation rigid drive unit sets up on the coarse adjustment support, and the rotation frame is fixedly arranged in the inner chamber of coarse adjustment support, and the rotation frame is C type structure, and the outer
diameter of rotation frame cooperates with the inner
diameter of coarse adjustment support, and the rotation rigid drive unit is connected with rotation frame, the curvature fine adjustment unit includes fine adjustment drive unit, sliding mechanism, and the sliding mechanism sets up in rotation frame, and the
diamond pen sets up on the sliding mechanism, and the fine adjustment drive unit is connected with sliding mechanism, the rotation rigid drive unit, fine adjustment drive unit all include
servo motor,
harmonic reducer, and the
servo motor is connected with
harmonic reducer. The utility model improves the stability of product quality, and guarantees the arc profile degree
numerical stability that trims out.