Experimental investigations to optimise step drill geometry for burr minimisation in drilling using regression model
by Ch. Ramu, N.K. Mehta, Pradeep Kumar, A.G. Shankara Murthy
International Journal of Manufacturing Technology and Management (IJMTM), Vol. 21, No. 1/2, 2010

Abstract: This paper aims at optimising step drill geometry, to minimise burr size, in drilling mild steels. The influence of step parameters namely step angle, size and length on burr size were studied. The results reveal that burr size depends not only on thrust force but also on torque. Optimisation results show that to get minimum burr height on the exit side, step diameter should be approximately 75-85% of drill diameter and step length should be about 50% of drill diameter. Empirical equations for thrust force, torque and burr height were also established in terms of step parameters.

Online publication date: Sat, 31-Jul-2010

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Manufacturing Technology and Management (IJMTM):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com