This CNC machine tool four-claw chuck can stably hold different shapes of parts


The chuck is a mechanical device on the machine tool fo […]

The chuck is a mechanical device on the machine tool for clamping the workpiece. The clamping and positioning of the workpiece is achieved by the radial movement of the jaws all over the chuck body. The chuck is generally composed of a chuck body, a claw and a claw driving mechanism. Chucks are typically mounted on lathes, cylindrical grinders and internal grinders, and can be used with milling machines for milling machines and drill presses.

Can the advantage of four-point clamping be applied in practice?

Choice|To be self-centering still reliable

Because the deformation of the four-claw clamping part is significantly better than the three-jaw clamping, some special-shaped parts are very difficult to clamp with the three-jaw chuck, so some easily deformed or square parts will choose the four-jaw chuck to clamp .

The four-jaw chuck is composed of one disc body and four claws, and the connecting lines of the two claws are perpendicular to each other, and the intersection point of the connecting line is just the center of the chuck. The common four-jaw chuck is also divided into four-claws from the centering chuck and the four-jaw single-action chuck. The four-claws move synchronously from the four-claw of the centering chuck. They are suitable for clamping square parts. They are also suitable for shaft and disc parts. Each claw of the four-jaw single-action chuck can be moved in one position. Eccentric parts and irregularly shaped parts.

The traditional four-claw centering chuck has a great disadvantage: because the four jaws move synchronously, this causes the chuck to not ensure that the four claws are simultaneously clamped to the workpiece, and the test pad needs to be repeated during the clamping process. Gaskets to solve this problem. This process is time consuming and inefficient. When changing parts of different sizes, you also need to adjust the position of the claws again.



Traditional four-jaw timing chuck is very difficult to accurately touch parts with four claws

The four-jaw single-action chuck can move in a single stroke. It is guaranteed that each jaw is reliably in contact with the workpiece, but there is no manual centering function. Therefore, each of the claws of the single-acting chuck needs to be repeatedly adjusted to gradually adjust the parts to the center of the chuck, and the parts with high requirements on the center line and the grip surface are not suitable.

Traditional four-jaw single-action chucks are very difficult to locate the center of the part

Is there a four-jaw chuck that can not only stabilize the clamping parts, but also eliminate the need for such cumbersome debugging?

Ideas | Floating Centering makes you more fast and better

Because the drawbacks of the traditional four-claw centering chuck and the four-jaw single-action chuck are obvious, many users have abandoned the use of the four-jaw chuck and decided to spend a high price as a special part to customize a special clamping scheme. This is not only costly but also versatile, and the chuck loses its greatest advantage – a wide range of clamping. The emergence of the four-jaw floating centering chuck provides a new idea for solving the clamping problem of the deformed and deformable parts.