Analysis and Compensation Following Error of Feed Drive in CNC

Xian Jun Sheng; Ke Xin Wang; Ren Ke Kang; Yong Qi Wang

doi:10.4028/www.scientific.net/AMM.26-28.591

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 26-28Analysis and Compensation Following Error of Feed...

Analysis and Compensation Following Error of Feed Drive in CNC

Abstract:

In CNC machining, the constant following error was caused by the uniform motion of feed drive, which could induced contour error in the multi-axis movement, and the contour error would affect machining accuracy. In this paper, the produce principle of following error is analyzed, as well as the influences of following error on contour of linear and circular interpolation. The following error was compensated by velocity feedforward controller, and a new method for identifying coefficient of velocity feedforward controller is presented, based on the actual observed values of following error. The following error was eliminated after compensating with the proposed method.

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Periodical:

Applied Mechanics and Materials (Volumes 26-28)

Pages:

591-597

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.26-28.591

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Online since:

June 2010

Authors:

Xian Jun Sheng, Ke Xin Wang, Ren Ke Kang, Yong Qi Wang

Keywords:

Contour Error, Feed Drive, Following Error, Identify Coefficient, Velocity Feedforward

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