Influence of gear ratio on wear depth of nonstandard HCR spur gear drive with balanced fillet stress

Abstract

In this paper, the wear depth of a nonstandard High Contact Ratio (HCR) spur gear drive is investigated using contact analysis considering the load share between the tooth in contact, fillet stress and contact stress for number of mesh cycles in steel gears. The fillet stresses obtained using finite element method is balanced by varying the tooth thickness along the reference line. This method of changing the tooth thickness is referred as nonstandard HCR spur gear drive. Using this method, an improved nonstandard HCR spur gear drive is obtained in terms of bending strength. In this enhanced nonstandard HCR spur gear drive the wear depth is estimated analytically for balanced fillet stress. Also, this paper explores the influence of gear ratio over wear depth of nonstandard HCR spur gear drive and finally the results are discussed.