Currently, many gear transmissions in use, mainly consist of cylindrical gears. Among the existing methods for cutting cylindrical gears, the process of cutting with worm milling cutters has gained the widest popularity. Research and practical experience in the use of worm milling cutters have shown that the accuracy of the profile of worm milling cutters depends on the geometry of their cutting part. In turn, the performance of worm milling cutters depends on the geometry of the cutting part. Thus, the tasks of increasing the accuracy and performance of worm milling cutters are interconnected. To address these tasks, it is necessary, first and foremost, to analyze possible errors that occur during the gear cutting process and the reasons for their occurrence, as well as the role of design methods for worm milling cutters in their accuracy and performance. When transforming the generating surface of a milling cutter to the real instrument choose the surfaces of tooth of milling cutter, one of that is a re-sharping, and the second is a not re-sharping, setting initial position of these surfaces the parameters of geometry of cutting part in the instrumental system of coordinates. However, due to the peculiarities of forming these surfaces during the manufacture of the cutting part of a worm milling cutter, the resulting cutting edge takes the form of a spatial line and does not lie on the generating surface of the milling cutter that was used as the basis for the design. This leads to additional errors in the profile of the gear cut with such a cutter. The question of the impact of the shape of the cutting edge of the milling cutter, obtained in this way, on the parameters of the gear’s surface has not been considered up to this point due to the absence of work in this direction. The influence of the shape of the cutting edge on the surface of the gear is considered through the parameters of the accuracy of the manufacture of these surfaces, which form the cutting edge and are standardized by the corresponding deviations. The shape of the rake surface of the tooth, which is regulated by the relevant standard, plays a vital role, so it is necessary to first consider the features of the formation of re-sharpening surfaces of worm milling cutters—the rake surface. This chapter discusses the methods for forming the front helical surface of worm milling cutters, and based on the results of theoretical and practical research, recommendations are provided for increasing the accuracy of such milling cutters by studying the formation of these surfaces of this tool.