NDLI: A DBB-based accuracy measurement method for rotary axes of high speed 5-axis CNC machining center

Content Provider	IEEE Xplore Digital Library
Author	Shang Peng Xu anping Zhang dawei
Copyright Year	2010
Description	Author affiliation: School of Mechanical Engineering, Tianjin University 300072, China (Zhang dawei) \|\| School of Mechanical Engineering, Hebei University of Technology, Tianjin, 300005, China (Shang Peng; Xu anping)
Abstract	The equipment of 2 rotary axes on 5-axis CNC machining centers provided 2 more degrees of freedom (DOF) between the workpiece and the tool, as well as more geometrical errors. There was not authoritative method to measure the alignment errors of rotary axes. A novel method was proposed in this paper to assess the main alignment errors of C-axis of 5-axis CNC machining center by using double-ball-bar (DBB). First, the measurement models were derived, which contained four main errors of C-axis, during the measurement, several axes moved together in order to keep the DBB follow a circle trajectory, and during this process, the length changes of the bar were send to the PC which connected with the sensor equipped in DBB. The errors were analyzed and calculated with the length changes of the bar of DBB at different sensitive directions. At the end of this paper, the synthetical errors of the machining center were proposed as the ultimate result. The applicability and effectiveness of this proposed diagnosis method was validated by comparing the calculated results and the real errors existed in the aim 5-axis machining center.
Starting Page	3551
Ending Page	3554
File Size	390132
Page Count	4
File Format	PDF
ISBN	9781424477371
e-ISBN	9781424477395
DOI	10.1109/MACE.2010.5536577
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-06-26
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Error analysis Machining Length measurement Motion measurement Computer numerical control Mechanical engineering Alignment errors Milling machines Rotary axis Coordinate measuring machines Double-ball-bar 5-axis CNC machining center Mechanical variables measurement Velocity measurement
Content Type	Text
Resource Type	Article

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