为了提高面齿轮副的强度并解决其磨齿问题,提出了弧线齿面齿轮副的一种新的加工方法,并研究其啮合特性。用有刀倾的刀盘旋转而成的切削面作为假想齿轮的齿面,模拟产形齿轮和被加工齿轮啮合过程,推导弧线齿面齿轮副齿面方程;根据两齿面在啮合过程中连续相切条件,建立了考虑安装误差的轮齿接触分析(TCA)模型;齿轮副计算机啮合仿真结果表明,刀倾角、产形齿轮齿数、刀尖半径等加工参数和安装误差向量对啮合迹线和接触椭圆等参数影响较大。 齿轮副的凹凸齿面有利于提高齿轮副强度,用现有砂轮和数控机床可实现面齿轮加工。
To improve tooth strength and make tooth grinding implement for face gear, a new generating method of face gear drive has been proposed, and the meshing characteristics are investigated. First, the tooth surface of imaginary gear is formed by a rotary cutting surface of cutter head with a tilted angle. The meshing process of the imaginary gear and manufactured gear is simulated, and the tooth surface mathematics model of face gear drive has been deduced. Then the tooth contact analysis model which considers the assemble errors is established under the conditions of continuous tangency of two contact surfaces. The computerized simulation of meshing and contact shows that, the machine settings of initial tilted angle, the number of imaginary tooth, cutter head radius and the vectors of assembly errors have a significant effect on the contact path and contact ellipse. The concave and convex of face gear tooth surface benefits gear strength, and the grinding process can be conducted on the general wheel and numerical control machine.
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