Straight shank collet is also called C-type spring collet, which is divided into C20\C32 and C42. C32 is used more frequently, and its material is generally 65MN. Straight shank collet is also called powerful collet - C collet. Straight shank collet is a high-speed, high-precision, and high-efficiency processing fixture. The tool holder must be able to clamp the tool on the machine tool with high precision, and can still maintain a high-precision clamping state during the processing. The powerful spring collet must be equipped with a powerful tool holder, and is generally used on milling machines or machining centers.
C20 powerful collet is widely used in various mechanical processing clamping fields. It is a kind of collet, a connecting tool between the tool holder and the CNC tool. C20 powerful collet can clamp tools with a diameter of 3mm-16mm. It is used in combination with a powerful tool holder. The tool holder must be able to clamp the tool on the machine tool with high precision and maintain a high-precision clamping state during the processing.
C25 strong collet is widely used in various mechanical processing clamping fields. It is a kind of collet, a connecting tool between the tool holder and the CNC tool. C25 strong collet can clamp tools with a diameter of 6mm-20mm. It is used in combination with a strong tool holder. The tool holder must be able to clamp the tool on the machine tool with high precision and maintain a high-precision clamping state during the processing.
C32 strong collet is widely used in various mechanical processing clamping fields. It is a kind of collet, a connecting tool between the tool holder and the CNC tool. C32 strong collet can clamp tools with a diameter of 6mm-25mm and is used in combination with a strong tool holder. The tool holder must be able to clamp the tool on the machine tool with high precision and maintain a high-precision clamping state during the processing.
The locking principle of the powerful chuck tool holder: similar to the principle of the ratchet bearing, the needle roller is thicker in one direction and thinner in the opposite direction on the conical surface, instead of rolling on a contour surface, that is, the gap is smaller in one direction and locked , one direction is the gap is larger, loosen it. When the locking sleeve rotates clockwise, it drives the cage and needle roller to rotate. When the needle falls into the 0.8 groove on the chuck body, the cage is forced to tilt due to the guiding effect. Continue to rotate the 0.8 groove to make the needle roller move upward. The cage is driven to move together, forming a spiral upward movement. Due to the taper effect, the chuck body is forced to deform inward, forming a locking force. Turn the screw downwards to loosen it counterclockwise. The round groove design of the inner hole ensures uniform elastic deformation and ensures excellent precision. The special needle bearing arrangement design has low locking resistance and high clamping force, which can produce a clamping force of 280kgm.
Powerful collet chucks are suitable for milling machines for heavy cutting and precision cutting. Powerful collet chucks are commonly used in cutting processing. They are used to clamp straight shank tools such as milling cutters and reamers. The clamping deformation of the retaining spring is small. The tolerance of the clamped tool shank diameter is h6. The clamping force is relatively large and the clamping accuracy is relatively good. Different collets can be replaced to clamp milling cutters and reamers with different shank diameters.