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一、问题的提出凸轮轮廓,按其左右二侧对称与否,分为对称与不对称两种类型。左右二侧轮廓,是以特定的点或线为分界的。特定点或线可以是最高升程点、对称轴线、特定值升程点等等。凸轮升程测量,即以此分界点为升程测镀起始点(如图1所示,最高升程点φ_m为升程测量起始点)按一定的角度间隔,在指定轮廓范围内(如图1所示,由φ_0至φ_n)测量轮廓各点半径对基圆半径的尺寸差。凸轮升程是其转角的非线性函数,凸轮轮廓表现为一封闭的复杂曲线,因而,起始点的位置影响
First, the question raised Cam contour, according to its symmetry or not on both sides, divided into two types of symmetry and asymmetry. Left and right sides of the outline, is based on a specific point or line as the boundary. A particular point or line can be the highest lift point, the axis of symmetry, a particular point of lift, and so on. Cam lift measurement, that is, the starting point for the demarcation point lift measurement plating (shown in Figure 1, the maximum lift point φ_m for the starting point of lift measurement) at a certain angular interval within the specified profile (Figure 1, φ_0 to φ_n) is used to measure the size difference between each point of the contour and the radius of the base circle. Cam lift is a non-linear function of its rotation, the cam contour appears as a closed complex curve, thus, the starting position of the impact