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我厂第二金工车间在技术革新运动中,由于认真的学习苏联先进经验,在车间内试验并推广了苏联先进刀具端铣刀,使生产效率提高十几倍,保证了车间生产任务的顺利完成。现将这种铣刀介绍如下:端铣刀的结构如图所示,这种铣刀的刀柄系用45号钢制成,刃部用P9钢,刃部和柄部并用焊接焊牢。表1是三种不同直径端铣刀的设计尺寸。这种铣刀的特点是:(1)齿数少:标准铣刀的齿数为5～6个,列昂诺夫铣刀的齿数是4～6个,而端铣刀的齿数一般为3个,最多不过4个,因此这种铣刀的刀齿强度高,能在超过规定的切削用量下工作。一般铣刀在减少齿数后会影响工件的表面光结度,只能控制在(?)_3～(?)_4之间;但端铣刀由于切削用量高,螺旋角大,切削时形成连续切
In the process of technological innovation, the second metalworking workshop of our factory, due to conscientious study of the advanced experience of the Soviet Union, tested and promoted the advanced Soviet knife end mill in the workshop, which increased the production efficiency by more than ten times and ensured the successful completion of the workshop production tasks . This type of milling cutter is introduced as follows: The structure of the end mill is shown in the figure. The shank of this milling cutter is made of 45 steel and the blade is welded with P9 steel, blade and shank. Table 1 is the design of three different diameter end mill size. The characteristics of this milling cutter are: (1) small number of teeth: the standard cutter number of teeth is 5 to 6, Lennon Knife cutter teeth is 4 to 6, while the end milling cutter teeth generally 3, Up to but 4, so the cutter teeth of high strength, in excess of the provisions of the cutting work. Generally reduce the number of teeth after the cutter will affect the surface finish of the workpiece, can only be controlled between (?) _ 3 ~ (?) _ 4; but the end milling cutter due to high cutting, helix angle, cutting to form a continuous cut