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不论是柴油机还是汽油机所用的铸铝活塞,大部分在其头部顶面都有两个不同直径的气门坑。 以前用与气门坑直径大小的钻头加工,钻头随主轴旋转,再移动中拖板,对气门坑进行加工。该方法有以下缺点:1）钻头直径大,磨刀困难;2）加工时,振动大,且粗糙度达不到要求;3）各种活塞的气门坑直径各不相同,使钻头种类多。为了适应少批量、多品种的生产状况,我们设计了一种专用且经济的合金刀。 1.刀具的结构 （1）刀杆 刀杆为通用件,其结构如图1。左半部与C6140车床的主轴相配,右半部设计φ24_0~(+0.03),深8.5的作为定位孔与刀头配合,在孔的前面,能固定刀
Most of the cast aluminum pistons for diesel or gasoline engines have two different diameter valve pits on the top of their heads. In the past with the diameter of the valve pit drill bits, drill bit with the spindle rotation, and then move the carriage, the valve pit for processing. The method has the following disadvantages: 1) the drill has large diameter and the sharpening cutter is hard; 2) the vibration is large and the roughness can not meet the requirements during processing; 3) the pit diameters of the various pistons are different, In order to meet the production conditions of less batch and more varieties, we designed a special and economical alloy knife. 1. Tool structure (1) Arbor Arbor common parts, the structure shown in Figure 1. The left half of the spindle with the C6140 lathe match, right half design φ24_0 ~ (+0.03), deep 8.5 as a positioning hole with the bit, in front of the hole, can be fixed knife