If the spring collet produced has a longer service life

1. Finish turning the conical surface of the collet. Use the threaded tire to ensure the turning accuracy of the collet body. After finishing finishing the finish turning of all surfaces and drilling the equal dividing holes, turn the conical surface. When turning the conical surface, take the threaded surface as the positioning reference. We design a cap pattern tire, which can ensure the turning accuracy when turning the conical surface. The processing principle is as shown in the following figure. First screw the head onto the ear pattern tire, and then install the cap pattern tire onto the machine tool spindle, Finally, use the small TOOL HOLDER on the supporting plate to cut the Spring Collet.

2. Milling into equal parts: when milling the groove on the trimming chuck, first use the end mill iron 20mm x 40mm to divide the groove into six equal parts, and then use the iron chip cutter to mill the 3mm wide six equal parts empty groove for the split, but this groove cannot be iron connected, and the end face is left with 3~4mm connecting bars, so that the chuck body is still integral, so as to ensure that the incoming end will not be deformed after thermal processing, and the processing accuracy of each positioning surface of the grinding incoming end should be aligned and thermal processing should be conducted after the above processing, but the external processing parts should be reasonable, The collet head shall be quenched,? Its hardness is about 40~45HRC, and the middle part of the chuck is not quenched to ensure the elasticity of the chuck.

3. Grinding the collet cone surface: when grinding the collet cone surface, the thread tire is also used to ensure the grinding accuracy. The conical surface is an important locating surface in the clamping process of the collet. The accuracy of the conical surface is good or bad. The accuracy of the whole chuck is directly affected. A set of grinding and screwing clamping chuck is designed. The positioning datum is still the thread surface. The coaxiality of the grinded cone surface with respect to the dry thread surface can reach 0.1mm

4 Inner diameter of spring collet: the grinding inner diameter tire is used to ensure the accuracy of grinding plus T. The inner diameter of the collet is also a positioning surface, which is used to hold the clamp block for the inner diameter of the head, and then the clamp block is used to tighten the workpiece. Therefore, the accuracy of the inner diameter also directly affects the accuracy of the workpiece to be processed, which requires that the inner diameter and the conical surface must be coaxial. We design a special grinding inner diameter tire and clamping chuck, which is positioned with a conical surface. After grinding, the coaxiality of the inner diameter of the chuck with respect to the thousand cone surface can generally reach 0.02mm

5. Spring collet guide surface: similarly, thread tire is used to ensure grinding accuracy. The guide surface plays a guiding role in the collet, and the guide surface and cone surface must be coaxial. It is still clamped with the thread tyre used for grinding the cone surface.