Document Type

Conference Paper

Publication Date

2026

Abstract

Manufacturing processes Lab (IENG 302L) is one of the courses that is taught in the Industrial Engineering Department. The students perform several manufacturing processes in this course and for every one of these manufacturing processes, the students need to submit a project report. One of these manufacturing processes is a CNC turning process. The turning project of this course has historically had extensive average time for completion. As such, it was deemed necessary that a way to improve the quality of a turning project be generated. Industrial Quality Control (IENG 316) is also taught as part of the industrial engineering curriculum, and it was determined that the quality tools in this course should be used to evaluate the initial performance of the turning project. An executive activities sheet has been developed for this IENG 303 turning project to collect data about the time required to finish this project and to check if that was meeting the expectation or not. The turning projects of Spring 2021 and Fall 2021 semesters were evaluated by using several analysis techniques, such as Shewhart’s control chart, the DMAIC process, check sheets, scatter diagrams, pareto charts, and fishbone diagrams. Several quality control tools were used to evaluate the length of time for the in-lab turning process and overall project completion. Several assignable causes were found and resolved to improve this project in the Spring 2022 semester. Then, the project was reevaluated by using quality control tools. Significant improvements were obtained from this evaluation which reduced the time to finish the turning machining process by 50% and reduced the errors and needed troubleshooting in the process and minimized the scrap material in the process which all led to improving the quality of the turning project.

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