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Contouring Accuracy in CNC Machine
Hardik H. Bhatt,  Ketan D. Saradava
With the expanding demand on the dimensional precision of machined parts, contouring accuracy regarding contour error has been, and keeps on being, a major worry in the configuration and control of continuous-path CNC machines. Current strategies for accomplishing more prominent accuracies can be delegated control methodologies or compensation approaches. A direct approach is initially explored which to keep the dynamics of the machine simple with the utilization of a simple proportional controller for the position feedback loop. It is demonstrated that with perfectly matched axial dynamics, flawless straight paths with no contour errors can be accomplished. With the expansion of a simple feedforward gain to compensate for radial errors coming about because of restricted bandwidth of the machine axes, flawless round shapes with no contour errors can likewise be accomplished. A tuning method, utilizing measured steady-state axial tracking errors, is then proposed to tune the gain to accomplish matched axial dynamics.
Keywords- CNC machine tools, contouring error, machining accuracy, tracking error, machine axial dynamics.
Unique Identification Number - IJEDR1601083Page Number(s) - 500-503Pubished in - Volume 4 | Issue 1 | March 2016DOI (Digital Object Identifier) -    Publisher - IJEDR (ISSN - 2321-9939)
Cite this Article
Hardik H. Bhatt,  Ketan D. Saradava,   "Contouring Accuracy in CNC Machine"
, International Journal of Engineering Development and Research (IJEDR), ISSN:2321-9939, Volume.4, Issue 1, pp.500-503, March 2016, Available at :http://www.ijedr.org/papers/IJEDR1601083.pdf