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Breakage Detection of Small-Diameter Tap Using Vision System in High-Speed Tapping Machine with Open Architecture Controller  

Lee, Don-Jin (Engineering Research Center/Net Shape and Die Manufacturing, Pusan National University)
Kim, Sun-Ho (Department of Mechatronics Engineering, Dong-Eui University)
Ahn, Jung-Hwan (School of Mechanical Engineering, Pusan National University, ERC/NSDM)
Publication Information
Journal of Mechanical Science and Technology / v.18, no.7, 2004 , pp. 1055-1061 More about this Journal
Abstract
In this research, a vision system for detecting breakages of small-diameter taps, which are rarely detected by the indirect in-process monitoring methods such as acoustic emission, cutting torque and motor current, was developed. Two HMI (Human Machine Interface) programs to embed the developed vision system into a Siemens open architecture controller, 840D, were developed. They are placed in sub-windows of the main window of the 840D and can be activated or deactivated either by a softkey on the operating panel or the M code in the NC part program. In the event that any type of tool breakage is detected, the HMI program issues a command for an automatic tool change or sends an alarm signal to the NC kernel. An evaluation test in a high-speed tapping machine showed that the developed vision system was successful in detecting breakages of small-diameter taps up to M1.
Keywords
Tool Breakage; CMOS Image Sensor; Vision System; Slit Beam Laser; Threshold Filter; Centroid;
Citations & Related Records
Times Cited By KSCI : 8  (Citation Analysis)
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