What are the CNC machine tool clamps? What are the characteristics of CNC machine tools and fixtures?

What are the CNC Tool Holders? What are the characteristics of CNC Lathe Tooling and fixtures?

(1) Chuck clamp

Three jaw chuck: it is a three jaw chuck, which is the most commonly used general fixture for lathe. The biggest advantage of the three jaw chuck is that it can be automatically centered, with fast clamping range and clamping speed. However, the centering accuracy exists in error, and it is not suitable for workpieces with high coaxiality requirements.

(2) Hydraulic power chuck

The action is sensitive, the clamping is fast and convenient, and it can achieve a large pressing force. Some productivity and labor reduction are strong. However, when the clamping range changes, the claw position needs to be readjusted when the size changes. CNC lathes usually use hydraulic self centering chucks. This project may be suitable for batch processing.

(3) Adjustable jaw chuck

It takes more time than other types of chucks and is more. Therefore. Such chucks are rarely used on lathes to improve productivity. The adjustable jaw type four jaw chuck is generally used to locate and clamp parts with non concentric or symmetrical structure. Use four jaw chuck, faceplate, angle iron, angle iron, etc. to clamp irregular and heavy workpieces, which must be heavy.

(4) Power chuck

In order to improve the production efficiency of CNC lathes, if the high speed is realized, it even exceeds the ultra-high cutting. Now the numerical control lathe has reached 100000r / min. For such a high speed, the general chuck is no longer applicable. If the high-speed power chuck must be used to ensure safe and reliable processing.

Center hole and centering clamp of shaft parts:

(1) Central hole

It is a common positioning benchmark for shaft parts. The workpiece is installed between the spindle center and the tailstock center. If the axes of the two centers of the lathe do not coincide (front and rear direction), the turning tool will become a cone. Therefore, the tail of the lathe should be adjusted horizontally to make the axes of the two centers coincide.

(2) Automatic clamping chuck

When machining shaft parts on the CNC lathe, the blank is installed between the spindle center and the tailstock top, and the chuck or gear center on the working spindle drives the rotation. This kind of fixture can transmit enough torque during rough turning to adapt to the cutting of the spindle.

(3) Gear shifting Center

Gear shifting center. The housing can be connected with the lathe spindle hole through the standard reducer sleeve or directly. The housing is equipped with a center for centering the blank. The gear shifting sleeve is connected with the housing through screws. The ring retraction can prevent the screws from loosening. NC lathe usually uses this fixture for processing φ 10 ～ ±± diameter diameter diameter diameter diameter.

(4) Composite chuck and a top

The composite chuck can not only be used for two top workpieces, but also for one clamp and one top installation tool.