Title
Torque control for a form tool drilling operation
Abstract
This paper presents the dynamic modeling and real-time torque control for a form tool drilling process. The form tool produces a desired shape in a workpiece through a drilling process. In this study, the form tool drilling process resembles the combination of drilling, reaming, counter-boring, and chamfering operations. The machining process is modeled as a linear system with variable gain due to the form tool geometry. The process is also subject to unknown disturbances such as unpredictable chip jamming and tool-workpiece friction. Spindle motor power and speed measurements were used to estimate drilling torque for cost effective practical implementation. An input-output pole placement controller with previewed gain scheduling was designed and implemented. Through experimental studies, this controller was shown to effectively regulate tool torque and hence avoid tool breakage, by manipulating the feed during drilling, and reduce cycle time compared to current practice.
Year
DOI
Venue
1999
10.1109/87.736745
IEEE Transactions on Control Systems Technology
Keywords
Field
DocType
Torque control,Drilling,Shape,Machining,Solid modeling,Power system modeling,Linear systems,Gain,Geometry,Jamming
Control theory,Torque,Control theory,Gain scheduling,Model predictive control,Control engineering,Machining,Process control,Control system,Drilling,Mathematics
Journal
Volume
Issue
ISSN
7
1
1063-6536
Citations 
PageRank 
References 
9
1.10
0
Authors
5
Name
Order
Citations
PageRank
Richard J. Furness191.10
Tsu-Chin Tsao213537.12
James S. Rankin II391.10
Michael J. Muth491.10
Kenneth W. Manes591.10