我厂600、380、40、20马力内燃机车系列产品的驾驶室,车架等部件需加工许多φ50～φ300毫米大的圆孔。料厚为1～3毫米。如果采用气割或是凿削,不但效率低,精度往往也不能保证。为此,我们参照了国外的一些资料,设计并制造了通用板料多刀切孔器,较好地解决了在薄板上加工各种圆孔的问题。切孔器结构如图1所示,由锥柄体1;滑轴2、10;滑动刀座4;小钻头9;刀头8;压紧螺丝3、6、7几部分组成。锥 I plant 600,380,40,20 horsepower diesel locomotive cab, frame and other components to be processed many φ50 ~ φ300 mm large hole. Material thickness of 1 to 3 mm. If you use gas cutting or chiseling, not only inefficient, precision often can not be guaranteed. To this end, we have some reference to foreign information, design and manufacture of a common multi-plate cutter hole, a better solution to the processing of a variety of holes in the sheet problem. Cutter structure shown in Figure 1, the taper shank body 1; slide shaft 2,10; sliding seat 4; small drill 9; 8 head; compaction screws 3,6,7 several parts. Cone