On the curl and spring behaviour of CNC turned beryllium copper chips using computational image/video analysis
by V.S. Sooraj; Narayana Nidish; Anand Nikhil; Chaudhary Priyanka
International Journal of Machining and Machinability of Materials (IJMMM), Vol. 21, No. 4, 2019

Abstract: Characteristic features of spring coiled chips generated during straight turning of Beryllium-Copper alloy have been studied using computational image and video analysis. Geometry and curl-behaviour of ductile chips leading to the formation of continuous helical coil structure is investigated theoretically and experimentally. Aiming the predictive generation of such chips for futuristic applications, theoretical relationships are derived to predict the curl radii and helix parameters in terms of cutting conditions and tool geometry. Cutting performances are also analysed at various conditions using the chip compression ratio, incorporating the inter-influence of major and minor cutting edges. A specially designed vibration test of metal chip followed by a computational video analysis is introduced in this work to assess their spring characteristics and stiffness. A simplified spring-beam analogy is applied for modelling the transverse vibration of chips using a clamped-free end condition, frequency of which is analysed from the videos and correlated to stiffness. Detailed experimental investigation followed by response surface analysis is reported to illustrate the geometrical features of chips at various cutting conditions.

Online publication date: Sun, 11-Aug-2019

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 Machining and Machinability of Materials (IJMMM):
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