INFLUENCE OF HIGH PROFILE SHIFT IN IMPROVING SURFACE DURABILITY

Document Type : Original Article

Authors

1 Principal, St. Joseph Engineering College, Mangalore. Author for correspondence.

2 Lecturer, Dept. of Mechanical Engineering, BMS College of Engineering, Bangalore.

3 Assistant Professor Dept. of Mechanical Engineering Sahyadri Institute of Technology, Mangalore.

4 Assistant Professor, Dept. of Mechanical Engineering, Malnad College of Engineering, Hassan, India.

Abstract

ABSTRACT
The use of profile shift in involute tooth gearing has permitted the gear designer to
utilize conveniently different parts of the involute tooth curve generated by the base
circle. The procedure is called profile shifting or profile correction, which helps achieve
desirable tooth-action and to avoid interference or undercutting and also the most
dangerous tooth contact in the vicinity of the base circle. Altering a tooth-sum of a gear
pair operating between a specified centre distance changes the operating pressure
angle and hence necessitates profile shift. This profile shift can be distributed between
the gears of the pair suitably. Such gear pairs display considerable lowering of contact
stresses which is a more desirable characteristic for power transmission gearing. Few
cases of altered tooth-sum gearing have been subjected to experimental tests, the
performance of this gearing is compared vis-à-vis standard tooth-sum gearing. The
results have been highly encouraging. Such findings suggest the use of altered toothsum
gearing for power transmission applications. This paper presents the use of high
profile shift gearing in improving the surface durability of gears.

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