Page 32 - Moving Forward 2020: Harold and Inge Marcus Department of Industrial and Manufacturing Engineering magazine

MANUFACTURING
DESIGN
By Miranda Buckheit
Saving time and money via engineering By Miranda Buckheit
A new method for for machining hole patterns has implications for for cost and and time savings in in in in in automobile construction and and tech companies according to to a a a a a a a a a a a a a a a team of of researchers from the Harold and and Inge Marcus Department of of Industrial and and Manufacturing Engineering One of of the the the most notable aspects of of the the the research was the the the engineers’ ability to help designers and and and manufacturing engineers engineers better understand the the application and and and production of of of feature feature patterns with sizes constrained by the the location of of of groups of of of design features—geometric composite position tolerances The research produced by former master’s students Abhijeet Golhar and and Yiran Jiang and and their advisers El Amine Lehtihet professor professor of of of of industrial industrial engineering engineering and Edward De Meter professor professor of of of of of industrial industrial engineering engineering was published in in in in in in the Journal of of of Manufacturing Science
and Engineering Currently the the American Society of Mechanical Engineers provides a a a a a a a a a a a a a universal design standard that relays the the specification and and interpretation of geometric tolerance design constraints constraints but does not specify ease or difficulty of of complying with these constraints constraints “This study now provides a a a a baseline for how difficult some of these geometric position tolerance constraints are to to to create on
on
on
on
a a a a a a a a a shop floor ” Lehtihet said “Sometimes companies don’t have the proper equipment to to handle
certain designs and and have to revisit the the drawing board so this insight will save them both time and and money ” Golhar’s role in the the research was to design the the patterns and and subsequent experiments as as as well as as as get hands-
on
on
experience with the the department’s CNC—computer numerical control—machines to to to manufacture the the parts The CNC machines machines use data to to to control control and automate machine machine machine movements Mainly the research looked at at at linear rectangular and and circular patterns patterns of of holes of of various sizes After Golhar created and and manufactured the the patterns patterns he he he had to inspect the the work pieces using a a a a a a a a a a a Zeiss coordinate measuring measuring machine running CALYPSO software a a a a a a a common measuring measuring tool The researchers used the the the producibility algorithm designed for the the the the experiment to to to to determine the the the the inherent ability of the the the machine tool to to to to to satisfy a a a a a a a a a a given pattern subject to to to to to a a a a a a a a a a composite position tolerance constraint This analysis
gave the researchers insight into how how to to to produce particular design specifications including indicating how how difficult they are “The results obtained from the the the algorithm then needed to to be analyzed to to to draw inferences about the the the the patterns such as as how findings may enable enable designers to to to assess them ” Golhar said “This enables the the the engineers to to design design their manufacturing processes accordingly ” Golhar graduated in May 2018 32 IME NEWSLETTER • VOLUME 5 2020
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