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IN-PROCESS AND POST-PROCESS QUANTIFICATION OF MACHINING ACCURACY IN CIRCULAR CNC MILLING
Journal article   Peer reviewed

IN-PROCESS AND POST-PROCESS QUANTIFICATION OF MACHINING ACCURACY IN CIRCULAR CNC MILLING

Yongjin Kwon, Yalcin M. Ertekin and Bill Tseng
Machining science and technology, v 9(1), pp 27-38
23 Mar 2005

Abstract

BallBar CMM In-Process & Post-Process inspection Touch Probe
In-process part inspection using a spindle touch probe has gained a significant importance, mainly because parts can remain on the machine without disrupting the machine setup while inspection is being conducted. This practice leads to a shorter inspection time, improved part accuracies, and reduction of scraps. Recently, intense domestic and international competition has put more importance on part quality in terms of producing parts right the first time and maintaining the consistent quality standards. A literature review revealed that a comparative analysis between in-process gauging using a touch probe and post-process inspection using a coordinate measuring machine (CMM) to ascertain part quality has not been adequately studied. Therefore, there is a need for a study to measure the characteristics of the two inspection techniques. To address the problem, cutting experiments were conducted and measurement data were analyzed using a state-of-the-art CNC machine, a CMM, a touch probe, and a high-precision ballbar system. The experimental data show that machined features and touch probe measurements are affected by the inherent shortcomings in machine tool structure, suggesting a machine tool capability analysis be undertaken in tune with the required tolerance specifications prior to machining operations, rather than solely relying on the touch probe inspection for part quality assessment.

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Collaboration types
Domestic collaboration
Web of Science research areas
Engineering, Manufacturing
Engineering, Mechanical
Materials Science, Multidisciplinary
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