出席全国群英会的沈阳第二机床厂青年铣工李裕民刻苦钻研,积极掌握新技术。今年以来,他先后实现重大技术革新15项,,分别提高效率1～272倍。过去是用刨刀加工图1所示的端铣刀刀体齿槽,一个齿槽需要好几刀,而且质量不易保证,成为车间关键。后来经过他苦心钻研,制造一把沟纹拉刀,用这把沟纹拉刀加工齿槽,生产效率提高272倍。沟纹拉刀如图2所示。拉刀总长度较短,一共有17个齿,每齿升高量为0.05毫米。拉刀的技术要 Attending the nationwide heroeship, Shenyang No.2 Machine Tool Plant, a young mill worker, studied hard and actively mastered new technologies. This year, he has achieved major technological innovation 15, respectively, to improve efficiency 1 ~ 272 times. In the past is the use of planing machine cutter body shown in Figure 1 cutter tooth, a caster need several knives, and the quality is not easy to ensure that the workshop became the key. Later, after his painstaking research to create a grooved broach, groove groove with this processing alveolar production efficiency increased 272 times. Groove broach shown in Figure 2. Broach total length is shorter, a total of 17 teeth, the amount of each tooth increased 0.05 mm. Broach of technology