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在钻床上加工有多种规格内孔的工件时,一般需不断更换不同直径的钻头或铰刀等刀具。带锥柄的钻头和铰刀等,一般借助莫氏圆锥衬套安装于机床主轴的内锥孔或其它专用夹具的内锥孔中,装卸较麻烦,更换时需用楔铁将钻头等连同锥套一起拆卸,再用楔铁将钻头等从锥套中卸下。当加工小直径内孔工件时,由于内、外锥套层次较多,钻头的更换和装卸就更为麻烦。图示的快换钻床夹头具有结构简单、使用方便、节约辅助时间、提高生产率和减轻劳动强度等优点。使用时,钻夹头的锥柄安装在机床主轴内锥孔中,钻头则安装于套筒7的内锥孔中。套筒7由楔块5和
In the drilling of a variety of specifications in the hole processing of the workpiece, the general need to constantly replace the different diameter drill or reamer and other tools. Drill bits and reamers with taper shanks are usually mounted on the inner conical hole of the machine tool spindle or other special jigs by means of Morse taper bushings. Handling and disassembly are troublesome. Set with the demolition, and then use wedge iron to remove the bit from the taper. When machining small diameter bore workpieces, drill bit replacement and handling are even more troublesome due to more inner and outer cones. The illustrated quick change drill chuck has the advantages of simple structure, convenient use, saving auxiliary time, increasing productivity and reducing labor intensity. When used, the taper shank of the drill chuck is installed in the taper hole of the machine tool spindle, and the drill bit is installed in the taper hole of the sleeve 7. Sleeve 7 by the wedge 5 and