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Teaching Work-Holding in Undergraduate Classes

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Conference

2016 ASEE Annual Conference & Exposition

Location

New Orleans, Louisiana

Publication Date

June 26, 2016

Start Date

June 26, 2016

End Date

August 28, 2016

ISBN

978-0-692-68565-5

ISSN

2153-5965

Conference Session

Practical Teaching in Manufacturing

Tagged Division

Manufacturing

Page Count

17

DOI

10.18260/p.27354

Permanent URL

https://peer.asee.org/27354

Download Count

607

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Paper Authors

biography

Sangarappillai Sivaloganathan United Arab Emirates University

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Dr Sangarappillai Sivaloganathan – Siva is a Srilankan by birth and a citizen of the United Kingdom. His experience in Sri-lanka started with an year’s post-graduate apprenticeship in the manufacturing shops of the Government Railway and nine years in the Cement Industry. He graduated as a Mechanical Engineer from University of Srilanka, and obtained his Masters from the University of Aston and PhD from City University of London, both in the UK. He started his career in the UK as the Senior Research Assistant at the SERC Engineering Design Centre. He joined Brunel University in 1995 where he worked for 18 years before joining United Arab Emirates University in August 2011. During his stay at Brunel he has worked with many British industries. Dr Sivaloganathan is a keen researcher in Design and was the Convenor for the International Engineering Design Conferences in 1998 and 2000. He has been a regular participant of the ASEE annual conference during the past few years. He has published more than 85 papers in reputed journals and conferences.

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biography

Rajesh Ganithi Petroleum Institute

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Mr. Rajesh Ganithi started his career in engineering with a diploma in tool-and-die making from NTTF, India in 1995. Over the next 20 years, he gathered enormous amounts of experience while working for a variety of companies in various capacities. He started with IRS Singapore Pte Ltd as mold maker for five years from 1995. He then joined Meridian Automotive systems, Canada in 2001 as a tool and die maker. In 2005, he joined ATS Automation Tooling Systems, Canada as a tooling engineer and then joined Prolink Molds Canada in 2008 as a manufacturing engineer. Training students in CNC applications was part of his work in the past few years in Canada. In 2012, he joined UAE University as the engineer in charge of the CNC lab. The lab was completely rejuvenated by Rajesh and he plays an active role in teaching and researching CAM and its applications. Coming from a practical background, Rajesh has research interests in strategies for machining-time reduction and material saving. At present working in Petroleum Institute, Abu Dhabi.

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Abstract

Machine tool is a power driven appliance to bring the cutting tool and the work piece in contact and to have a relative motion between them that executes the cut that transforms the raw stock into a finished or semi-finished component. In order for the cut to be effective work has to be held firmly and appropriately. Two kinds of devices, the jigs and fixtures, are developed and used for this purpose. A jig is primarily used in hole fabrication, for locating and holding a work-piece and guiding the production tool. A fixture, on the other hand, is used in machining and assembly for securely locating and holding the work-piece without providing a built-in guidance to the manufacturing tool. Both must provide maximum accuracy and be designed for ease of mounting and clamping of the work-piece. Tools and tool holding and rapid tool changing have become standard attachments to machine tools. The relative motion has been taken care of by the enormous developments in CAD and CAM. But fixtures, which are situated at the interface between design and production, are still not given adequate attention despite the substantial savings in investments and costs and improvement in quality that can result. Further, surveys show that expenditures on fixtures and cutting tools represent seven to ten times the capital invested in a piece of equipment during its service life. The problem is further exacerbated in a teaching laboratory where even standard work-holding devices are not stocked due to low utilization. The situation is taken as a challenge and exercises were designed to teach the students the systematic approach to the design of work-holding. This paper describes some of the experiences in the design and use of jigs and fixtures and the student learning experiences.

Sivaloganathan, S., & Ganithi, R. (2016, June), Teaching Work-Holding in Undergraduate Classes Paper presented at 2016 ASEE Annual Conference & Exposition, New Orleans, Louisiana. 10.18260/p.27354

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