Front and rear claws of chuck of common lathe

The front claw and rear claw of lathe chuck are usually used for the chuck of metal working lathe. The front claw is three L-shaped claws, which are used to hold small workpieces. The reverse claw is three inverted L-shaped, and the other side of the claw can clamp the workpiece and the workpiece with larger diameter. The so-called reversal refers to the reversal of the thread that the jaw screws into the chuck. So the general metalworking chuck is six-claw.

Lathe chuck is a machine tool accessory that uses the radial movement of movable jaws evenly distributed on the chuck body to clamp and position the workpiece. Chuck is generally composed of chuck body, movable jaw and jaw driving mechanism. The minimum diameter of the chuck body is 65mm and the maximum diameter is1500 mm. The center of the chuck body is provided with a through hole, so that the workpiece or bar can be connected with the end of the machine tool spindle directly or through a flange. Chuck is usually installed on lathe, cylindrical grinder and internal grinder, and can also be used on milling machines and drilling machines with various indexing devices.