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本文介绍两种铣床用的快换夹头。它们结构简单,使用方便,能大大地缩短辅助时间。图1所示的快换夹头,用来夹持直径4～40毫米的直柄或锥柄铣刀。夹头由心轴2、可换轴套3、外套6、过渡夹套5及螺钉3组成。心轴2的锥柄插入铣床主轴锥孔内,并用拉紧螺杆1拉紧。心轴下端开有两条键槽(A-A剖面),可换轴套4下端的两牙花键恰好配入键槽内,通过它带动铣刀转动。可换轴套4与心轴2的配合孔,必须与
This article describes two types of milling machines with quick change chuck. Their simple structure, easy to use, can greatly reduce the auxiliary time. The quick change chuck shown in Figure 1 is used to hold straight shank or taper shank cutters 4 to 40 mm in diameter. Chuck from the mandrel 2, changeable sleeve 3, jacket 6, the transition jacket 5 and 3 screws. The taper shank of the spindle 2 is inserted into the taper hole of the spindle of the milling machine and is tightened with the tensioning screw 1. The lower end of the mandrel is provided with two keyways (A-A section). The two splines at the lower end of the replaceable shaft sleeve 4 just fit into the keyway, and the cutter is driven to rotate through it. Replacing sleeve 4 and mandrel 2 with the hole must be