平键是各种电机产品中不可缺少的零件之一。往往在一台电机中,就有轴伸键、定子铁心键、定子压板键、转子铁心键等很多种,不但用量大而且对尺寸相光洁度的要求也很高。文化大革命前我厂平键制造是先用锻造方法制成键的毛坯,然后在牛头刨床上进行切削加工,既费工又费料,质量达不到要求,产量满足不了要求,成为生产上的薄 Flat key is an indispensable part of a variety of motor products. Often in a motor, there are shaft extension keys, stator core keys, stator pressure plate keys, rotor core keys and many other species, not only the amount of large and the size of the finish requirements are also high. Before the Cultural Revolution, I flat key manufacturing plant is made by forging the key blank, and then shaper on the cutting process, both the work and expense of material, quality does not meet the requirements, the output can not meet the requirements of a production thin