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假设当两对或多对轮齿接触时,速比不变,载荷均布,则可由圆盘试验机实验得到的润滑油牵引力——润滑特性曲线估算牵引力的瞬时摩擦系数。此结果通常在力和直径不变的条件下得到。文中列出了矿物油的标准牵引力——润滑特性曲线。 图中,当前一循环的接触点在D时,则在A脱离啮合。当接触点自A向C运动时,两对轮齿间载荷均等。从C到D时,载荷仅作用在一对轮齿上。如重迭系数为R_c,模数为m,压力角为,则有:
Assume that when two or more pairs of gear teeth contact, the same speed ratio, uniform load, the disc testing machine can be obtained by testing the lubricating oil traction - lubrication curve to estimate the instantaneous traction coefficient of friction. This result is usually obtained under the same force and diameter conditions. The paper lists the standard mineral oil traction - lubrication curve. In the figure, when the contact point of the previous cycle is at D, the A is disengaged. When the contact point moves from A to C, the load between the two pairs of gear teeth is equal. From C to D, the load acts only on a pair of gear teeth. If the overlap coefficient R_c, modulus m, pressure angle, then: