There are both tools and tool holders in precision parts processing, but do you know how many types of tool holders there are? (1) Handle of straight shank tools: This type of shank mainly includes end mill shank and collet chuck shank. The end mill tool holder has good positioning accuracy and strong rigidity, and can hold the corresponding specifications of straight shank end mills and other straight shank tools; the collet chuck tool holder has the advantages of automatic centering and automatic elimination of deflection. Straight shank tools that hold small specifications are widely used. (2) All kinds of milling cutter holders: three-face milling cutter holders (xs) series are used for face milling cutters, sleeve end milling cutter holders (xm) series are used for sleeve end mills, and indexable face milling cutters are used Can be converted to face milling tool holder (xd) series. The size of the tool holder should be selected according to the diameter of the milling cutter's hole. Morse shank end mills should use Morse shank without flat tail. (3) Drilling tool shank: When processing precision parts, the chuck shank is equipped with the corresponding drill chuck, which can hold straight shank drills, center drills, etc. Morse taper shank drill bits can choose Morse shank with flat tail. Sleeve reaming drills use sleeve reaming and reamer handles. (4) Tapping tool holder: tapping chuck is mainly used, which is composed of tapping chuck holder and tapping collet. The above four tool holders play an indispensable role in the CNC machining industry, so they are widely used in this industry.