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一、挂轮的一般计算方法目前,在滚齿机上加工大质数齿轮时,一般使用的分齿及差动挂轮(即交换齿轮)计算公式为:分齿挂轮:a/b×c/d=分齿定数×k/z±p差动挂轮:a_2/b_2×c_2/d_2=差动定数×p/s_垂×k式中:k——滚刀头数;z——工件齿数;p——假想齿数和工件齿数的差值,一般取1/5～1/50;s垂——垂直进给量。在使用以上公式计算机床挂轮时,对其中p值的选择往往是一个麻烦的问题,如p值选得较小,则分齿挂轮易出现其它的大质数;如p值选得较大,又容易使差动挂轮得到过大的传动比。往往经过多次选取,还找不到合适的p值。
First, the general method of calculating the current round of gear hobbing machines in the processing of large prime number gear, the general use of the points and differential gear (ie, exchange gear) formula is: points gear round: a / b × c / d = The number of divided teeth × k / z ± p differential wheel: a_2 / b_2 × c_2 / d_2 = differential fixed number × p / s_ vertical × k Where: k-- hob head; z-- workpiece teeth ; p - imaginary teeth and the difference between the number of workpiece teeth, usually take 1/5 ~ 1/50; s vertical - vertical feed. When using the above formula to calculate the value of p, it is a troublesome problem to choose the value of p. For example, if the value of p is chosen to be smaller, , But also easy to make differential gear to get too large transmission ratio. After many times often selected, but also can not find a suitable p value.