Micromachining selected metals using diamond coated cutting tools
by Mark J. Jackson, Grant M. Robinson, Waqar Ahmed
International Journal of Nanomanufacturing (IJNM), Vol. 1, No. 2, 2006

Abstract: Micro and nanotechnology is becoming increasingly important to the needs of society. Therefore, the need to create devices from selected metals becomes more apparent. High-speed milling has been shown to provide a great deal of promise in creating microstructures and in nanotexturing surfaces in engineering materials. Cutting tool rotation is expected to reach 1,000,000 rpm (revolutions per minute) compared with conventional cutting speeds of around 30,000 rpm. Rotating the tool this quickly reduces cutting forces, which produce a high quality of cut so that post-processing is not required. Clearly, strain rates imparted to the workpiece at these speeds are very high and this influences initial chip formation and chip removal mechanisms. High strain rates imparted cause distinct chip formations in certain metals to occur which are similarly observed in other materials. Certain soft metals such as aluminium do not machine very well because the material adheres to the cutting tool. However, high strain rates tend to overcome these limitations. This paper examines high strain rate initial chip formation in metals, compares these results to other materials and shows that an initial chip curl model can be applied to describe high strain rate machining phenomena at the microscale.

Online publication date: Sun, 28-Jan-2007

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 Nanomanufacturing (IJNM):
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