NDLI: Experimental Characterization of Laser-Assisted Mechanical Micromachining (LAMM) Process

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Singh, Ramesh Shreyes, N. Melkote
Copyright Year	2005
Abstract	There is growing demand for micro and meso scale devices in the field of optics, semiconductors and bio-medical devices. In response to this demand, mechanical micro-cutting (e.g. micro-turning, micro-milling) is emerging as a viable alternative to lithography based micromachining techniques. However, certain factors limit the types of workpiece materials that can be processed using mechanical micromachining methods. For difficult-to-machine materials such as mold and die steels, limitations in cutting tool stiffness and strength are major impediments to the use of mechanical micromachining methods. This paper presents a Laser Assisted Mechanical Micromachining (LAMM) process that involves highly localized thermal softening of the hard material by focusing a solid-state continuous wave/pulsed laser beam in front of a miniature (100μm–1mm wide) cutting tool. By suitably controlling the laser power, location and spot size, it is possible to cause a sufficiently large decrease in the strength of the work material and thereby minimize catastrophic tool failure and lower tool forces and deflection. This paper presents the results of experimental characterization of the LAMM process. Micro scale grooving experiments are conducted on H-13 mold steel (42 HRc) in order to understand the influence of the laser variables (laser power, beam location with respect to tool) and cutting parameters (depth of cut, cutting speed and tool width) on the cutting forces and surface finish. The results show that, for a given cutting condition, these process responses are significantly influenced by the laser variables. Plausible explanations for the observed trends are given.
Sponsorship	Manufacturing Engineering Division and Materials Handling Division
Starting Page	957
Ending Page	964
Page Count	8
File Format	PDF
ISBN	0791842231
DOI	10.1115/IMECE2005-81350
e-ISBN	0791837696
Volume Number	Manufacturing Engineering and Materials Handling, Parts A and B
Conference Proceedings	ASME 2005 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2005-11-05
Publisher Place	Orlando, Florida, USA
Access Restriction	Subscribed
Subject Keyword	Laser heating Mechanical micromachining Micro grooving Experimental characterization Lasers Micromachining
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in