ABSTRACT
The previous chapters have demonstrated how the Direct Gear Design® approach expands the involute gearing limits in comparison with the traditional gear design that is based on the rack generation. This chapter is dedicated to definition of the gear parameter limits for the spur and helical gears with symmetric and asymmetric teeth. Some of the tooth shapes and gear mesh combinations presented below look rather unusual and may not have rational practical applications. A goal of this chapter is to show boundaries of the involute gearing parameters.
