Machine vise

Turn the lead screw with a wrench, and drive the moving clamp body through the lead screw nut to form the tightening and loosening of the workpiece. Machine flat pliers assembly structure is a removable thread connection and pin connection of cast iron; The linear motion of the movable clamp body is transformed by the spiral motion. The working surface is the friction surface of the shaft and hole of the screw pair, the guide pair and the clearance match.