Ergonomic Design Of Computer Numerical Control Milling Machine Using Quality Function Deployment

Nur Syaheera, Ahmad (2013) Ergonomic Design Of Computer Numerical Control Milling Machine Using Quality Function Deployment. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

In milling operation, CNC milling machine has been recognized as one of effective solutions for high productivity, efficiency and precision. However, the existing CNC milling machine has contributed to ergonomics problems such as awkward working posture, muscle fatigue and mental fatigue. The aim of this study is to redesign the existing CNC milling machine by considering working posture of the machinist. This study performed questionnaire survey to determine the requirements of machinist regarding CNC milling machine design. The requirements of the machinist are then translated using Quality Function Deployment and Kano to obtain technical specification of the redesigned CNC milling machine. The working posture of machinist while performing the milling operation in existing CNC milling machine and redesigned CNC milling machine was assessed using RULA analysis. Based on RULA analysis, the redesigned CNC milling machine has improved the working posture as shown by low score of RULA. Hence, this study concluded that application of Quality Function Deployment in designing an ergonomic CNC milling machine has shown an effective solution for safe working posture. This study suggests that the workspace arrangement of CNC milling machine should be critically studied to improve productivity efficiency.

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