凸轮轴车床靠模电子计算机辅助设计

• 作 者: 贺卫国 谢小平 鲁锦萍
• 出 处: 机械制造
• 发表日期: 1986年05期
• 关键词: 计算机辅助设计 刀具直径 运动简图 极径 从动件 运动规律 极角 挺杆 顶杆 工作图

发动机凸轮轴设计时,根据平顶杆的运动要求给出方程或升程值。而用凸轮轴车床加工凸轮轴时,需要将平顶挺杆的升程值L和相应转角δ换算成图1所示的C_k及X_k。C_k是凸轮极径,X_k是凸轮极角。图2是凸轮轴加工时的运动简图,车刀尖J相当于尖顶从动件,J′与刀尖的运动规律相同。图3是靠模工作图,滚轮与刀具直径相同,只要按照滚轮中心J′的运动要求,靠模转动X_k~′角,J′下降

Engine camshaft design, according to the requirements of the flat mandrel equation or lift value. However, when machining a camshaft with a camshaft lathe, the lift value L of the flattened lifter and the corresponding rotation angle δ need to be converted into C_k and X_k shown in FIG. 1. C_k is the cam diameter, X_k is the cam angle. Figure 2 is a schematic diagram of the camshaft machining movement, the tool tip J is equivalent to the spire follower, J ’and the tip movement of the same. Figure 3 is the work pattern by the model, the same diameter wheel and the tool, as long as the roller in accordance with the center J ’motion requirements, by mode rotation X_k ~’ angle, J ’down