Preliminary Development of Real Time Usage-Phase Monitoring System for CNC Machine Tools with a Case Study on CNC Machine VMC 250

• Published in: IOP conference series. Materials Science and Engineering 2018-03, Vol.319 (1), p.12016
• Main Authors: Harja, Herman Budi, Prakosa, Tri, Raharno, Sri, Martawirya, Yatna Yuwana, Nurhadi, Indra, Nogroho, Alamsyah Setyo
• Format: Article
• Language: English
• Subjects: Component reliability; Dynamic loads; Machine shops; Machine tools; Maintenance management; Microcontrollers; Monitoring; Monitoring systems; Numerical controls; Real time; Reliability aspects; Schedules; Spindles; Vertical milling machines
• ISSN: 1757-8981; 1757-899X
• DOI: 10.1088/1757-899X/319/1/012016

The production characteristic of job-shop industry at which products have wide variety but small amounts causes every machine tool will be shared to conduct production process with dynamic load. Its dynamic condition operation directly affects machine tools component reliability. Hence, determination of maintenance schedule for every component should be calculated based on actual usage of machine tools component. This paper describes study on development of monitoring system to obtaining information about each CNC machine tool component usage in real time approached by component grouping based on its operation phase. A special device has been developed for monitoring machine tool component usage by utilizing usage phase activity data taken from certain electronics components within CNC machine. The components are adaptor, servo driver and spindle driver, as well as some additional components such as microcontroller and relays. The obtained data are utilized for detecting machine utilization phases such as power on state, machine ready state or spindle running state. Experimental result have shown that the developed CNC machine tool monitoring system is capable of obtaining phase information of machine tool usage as well as its duration and displays the information at the user interface application.