Polishing machine test specimen clamping device for laboratory

The invention discloses a polishing machine test specimen clamping device for a laboratory. The polishing machine test specimen clamping device comprises a handle, a fixing clamp, an upright post, a rack, a gear, a hand wheel, a butterfly screw bolt, a transverse arm, a fastening screw, a clamp head fixing post, a clamp head, a right clamping block, a right butterfly screw bolt, a left clamping block and a left butterfly screw bolt, wherein the upright post is arranged on the fixing clamp, and the transverse arm is arranged on the upright post and can vertically move along the upright post. The clamp head fixing post is arranged on the transverse arm, and can leftwards and rightwards move along the transverse beam. The clamp head is fixedly arranged on the clamp head fixing post. The polishing machine test specimen clamping device has the beneficial effects that (1) the operation is simple, in addition, the safety coefficient in the experiment process is great, and the efficiency is high; (2) the adaptability is high, and the polishing machine test specimen clamping device can adapt to test specimens in dimensions; (3) operations of the contact and separation between a test specimen and a polishing disc, the loading on the test specimens and the like are convenient.