What kinds of CNC lathe chucks are commonly used?

The CNC lathe chuck is an important device for clamping the workpiece. It is mainly installed on the main shaft of the lathe. The rotation of the main shaft drives the rotation of the chuck to achieve cutting. So do you know which lathe chucks are more commonly used?

In terms of structure, it can be divided into: two-jaw chuck, three-jaw chuck, four-jaw chuck, six-jaw chuck, eight-jaw chuck, etc. When are these types of chucks used?

Two-jaw: It is used in fine turning, grinding and indexing head milling, and generally requires higher precision; if roughing and shapeless accuracy requirements can be used, a two-jaw chuck with lower precision can be used, and the centering accuracy is not very high. high.

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Three-jaw: The three jaws of the three-jaw chuck can move synchronously, so as to realize the function of automatic centering, the clamping range is large, the clamping is fast, and mass production and processing can be realized. Some bar workpieces mostly use this kind of chuck , is also the most common fixture currently used.

Four-jaw: It can be divided into two types: linkage type and single-action type. Generally, a four-jaw chuck can be used to clamp some square or heterosexual workpieces to prevent workpiece deformation.

Six-jaw and eight-jaw: The characteristics of the two types of chucks are similar. The main purpose of increasing the number of jaws is to increase the contact area and prevent the deformation of the workpiece. Such chucks are more suitable for workpieces such as some thin-walled parts.

In terms of power, it can be divided into: hydraulic chuck, pneumatic chuck, manual chuck, etc.;

Hydraulic: large clamping force, stable precision after claw repair, fast clamping, convenient and simple operation, an artifact of mass production of automated equipment, greatly improving production efficiency;

Air pressure: The clamping force is lower than the hydraulic pressure, the fully enclosed design is less polluted, and the inherent clamping force is still maintained in the event of a sudden power failure;

Manual: The chuck can be clamped and loosened by turning the wrench, which is suitable for rough machining of some rough materials.

Of course, in addition to the above types, there are some special fixtures that will not be introduced.

In summary, if they are combined and analyzed from the market usage, the hydraulic type three-jaw chuck is the most common lathe chuck, and its cost performance is relatively high.