NDLI: Synchronization of tool tip and tool orientation contour errors in five-axis machining

Content Provider	IEEE Xplore Digital Library
Author	El Khalick, M.A. Uchiyama, N. Sano, S.
Copyright Year	2012
Description	Author affiliation: Dept. of Mech. Eng., Toyohashi Univ. of Technol., Toyohashi, Japan (El Khalick, M.A.; Uchiyama, N.; Sano, S.)
Abstract	In current CNC machines, each axis is generally controlled by an individual controller, which tries to minimize the axial position tracking error. However, eliminating the tracking errors of each individual axis in multi-axis feed drive systems may not guarantee the desired contouring accuracy. Tracking errors in individual driving axis result in tool tip contour error and tool orientation contour error during five-axis machining. Based on the conventional definition of the tool orientation contour error, which is defined as deviation in the normal direction from the desired orientation in spherical coordinates, even if the tool tip contour error and tool orientation contour error are very small, a mismatch between the tool tip position and tool orientation causes an overcut or undercut when these errors are treated independently. In order to avoid this mismatch, this paper presents a new definition of the actual tool orientation contour error that considers the synchronization between the tool tip contour error and tool orientation contour error. In addition, an estimation model for the tool orientation contour error is proposed. Simulation results demonstrate that the proposed model gives a better indication of the actual tool orientation contour error than the conventional definition.
Sponsorship	IEEE Control Syst. Soc.
Starting Page	4594
Ending Page	4598
File Size	338447
Page Count	5
File Format	PDF
ISBN	9781457710957
ISSN	07431619
e-ISBN	9781457710964
e-ISBN	9781467321020
DOI	10.1109/ACC.2012.6314878
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-06-27
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	American Automatic Control Council(AACC)
Subject Keyword	Machine tools Feeds Machining Vectors Trajectory Estimation Kinematics
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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