Gear hobbing is one of the most common soft-machining processes for pre-toothing. The process kinematics result in a characteristic tooth-flank topography, which is mainly determined by so-called feed marks. For an economical finishing process by gear grinding in automotive applications, the feed-mark depths should not exceed a maximum value of 35 μm. In the present study the validity of this limit has been investigated in view of the development of increasingly powerful grinding machines and grinding wheels. For this purpose, gears with feed-mark depths δ_x below and above 35 μm were machined and ground by means of discontinuous profile gear grinding afterwards. The influence of the feed marks on the grinding process with roughing parameters was systematically evaluated on the basis of various process variables such as the increase in spindle power P_s or the degree of grinding-wheel clogging Z_s, while the resulting gear quality was mainly analyzed by various parameters to describe macro- and micro-geometry deviations of the ground tooth flanks. With increasing feed-mark depth, an increase in spindle power was found due to the additional machined volume. An influence of increasing feed-mark depths on the clogging degree, the grinding-wheel wear and the gear quality could not be proven. Therefore, economical finishing of gears by gear grinding is also possible with feed-mark depths of more than 35 μm. A new definition of this limit should be sought.

滚齿是用于预齿的最常见的软加工方法之一。过程运动学导致特征性的齿面形貌，这主要由所谓的进给标记确定。为了在汽车应用中通过齿轮磨削进行经济的精加工，进给标记深度不得超过35μm的最大值。在本研究中，鉴于功能越来越强大的磨床和砂轮的发展，已经研究了该限制的有效性。为了这个目的，具有馈标记齿轮深度δ _X低于35μm的工件经过机加工并随后通过不连续轮廓磨削进行磨削。根据各种工艺变量，例如主轴功率P _s的增加或砂轮堵塞Z _s的程度，系统地评估了进给标记对带有粗加工参数的磨削过程的影响_。，而最终的齿轮质量主要通过各种参数进行分析，以描述齿面的宏观和微观几何偏差。随着进给标记深度的增加，由于增加了加工量，发现主轴功率也增加了。进给标记深度增加对堵塞程度，砂轮磨损和齿轮质量的影响无法得到证明。因此，也可以通过进给标记深度大于35μm的齿轮磨削对齿轮进行经济的精加工。应该寻求该限制的新定义。