钻削加工在金属切削加工中占有重要的地位,是孔加工广泛应用的方法之一。它在汽车生产中占的比例很大,作用也很突出。仅就××汽车制造厂的发动机分厂和底盘分厂的初步统计,在近2000台金切设备中,各型钻床有500多台,占金切设备的25％以上。此外,还有一些设备(如立式车床、六角车床)也承担一定的钻削加工,因此,使它所占比例增加到30％左右。钻削刀具以普通高速钢麻花钻为主,约占95％以上。汽车生产是大量流水生产,产量大,节奏性强,要求既能稳定生产,又要有高的生产效率;零件和材料的种类多,要求刀具既能适应不同零件和材料的加工,又要有高的刀具寿命;零件尺寸要求严格,互换性强,表面光洁度和精度要求都较高。为了适应汽车生产的这些特点,几年来,虽然采用了一些新工艺、新刀具和新材料,但是和国内外先进水平相比还 Drilling plays an important role in metal cutting and is one of the widely used methods for hole machining. It accounts for a large proportion of automobile production, the role is also very prominent. Only × × car factory engine plant and chassis factory preliminary statistics, nearly 2,000 gold cutting equipment, all types of drilling more than 500 Taiwan, accounting for more than 25% of the metal cutting equipment. In addition, there are some equipment (such as vertical lathe, hexagonal lathe) also bear a certain degree of drilling, therefore, make it the proportion increased to about 30%. Drilling tools to ordinary high-speed steel twist drill-based, accounting for more than 95%. Automobile production is a large number of 流水生产, large output, strong rhythm, requiring both stable production, but also have high production efficiency; Many types of parts and materials, requiring both tools to adapt to different parts and materials processing, but also have High tool life; strict size requirements, interchangeability, surface finish and precision requirements are higher. In order to adapt to these characteristics of automobile production, in recent years, although using a number of new technology, new tools and new materials, but compared with the advanced level at home and abroad