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弹簧三用顶尖是我公司技协恽金生老师傅于七四年左右不断摸索研制成功的。通过实际生产使用证明,很有推广价值,它不但制造简单、安全可靠,且能提高工效,保证加工质量和减轻劳动强度。车床加工时,一般常用死顶尖与活顶尖。死顶尖用于研磨顶尖孔,加工精度比较高的工件;不能高速切削,高速切削顶尖与顶尖孔容易研成一体。活顶尖用于粗加工或半精加工,可高速切削提高工效;但活顶尖有间隙,不能精加工,故在工作中要两次更换顶尖,特别是加工一、二百斤重的大轴等时,要用天车或用垫起工件的办法来更换顶尖,既麻烦又增加了劳动强度,耽搁了不少辅助时间,且易使工件变形。
The top of spring three is my company’s Association for Science and Technology 恽 Kim Sang master about 74 years of continuous exploration and development success. Through the actual production and use of proof, great promotional value, it is not only easy to manufacture, safe and reliable, and can improve ergonomics, to ensure processing quality and reduce labor intensity. Lathe processing, commonly used dead top and live top. The top of the die is used to grind the top hole, the workpiece with high machining accuracy; can not be high-speed cutting, high-speed cutting the top and the top hole easily into one. Live top for roughing or semi-finishing, high-speed cutting to improve work efficiency; but there are gaps in the live center, can not be finished, so in the work to replace the top two times, especially the processing of one or two pounds of heavy shaft, etc. When using the crane or the pad to replace the top of the workpiece approach, both cumbersome and increased labor intensity, delay a lot of auxiliary time, and easy to make the workpiece deformation.