Data processing: generic control systems or specific application – Specific application – apparatus or process – Product assembly or manufacturing
Reexamination Certificate
2007-04-17
2007-04-17
Pham, Thomas (Department: 2121)
Data processing: generic control systems or specific application
Specific application, apparatus or process
Product assembly or manufacturing
C702S041000
Reexamination Certificate
active
11031748
ABSTRACT:
A system and method are provided for real-time measurement of tool forces. A relationship between a motor characteristic and tool forces is determined by first directly measuring tool forces for a standard tool, work piece, and part program in a central facility. A force profile indicative of the tool forces and the standard tool, work piece, and part program are provided to a user at a user facility. The motor characteristic for a CNC machine at the user facility is then measured for the standard tool, work piece, and part program. Based on the force profile determined at the central facility, the relationship between the motor characteristic and tool forces is determined. Thereafter, the motor characteristic of the CNC machine is measured for a desired tool, work piece, and part program and converted to tool forces using the relationship between the motor characteristic and tool forces.
REFERENCES:
patent: 4559600 (1985-12-01), Rao
patent: 5377116 (1994-12-01), Wayne et al.
patent: 5537734 (1996-07-01), Belka et al.
patent: 5566092 (1996-10-01), Wang et al.
patent: 5592386 (1997-01-01), Gaultier
patent: 5730643 (1998-03-01), Bartlett et al.
patent: 6110010 (2000-08-01), Pflager et al.
patent: 6161055 (2000-12-01), Pryor
patent: 6200204 (2001-03-01), Helgren
patent: 6311539 (2001-11-01), Yeo et al.
Altintas, Yusuf.Manufacturing Automation: Metal Cutting Mechanics, Machine Tool Vibrations, and CNC Design. Cambridge University Press: 2000. Chapters 2 and 3.
Altintas, Y. “Prediction of Cutting Forces and Tool Breakage in Milling from Feed Drive Current Measurements.” Journal of Engineering for Industry: vol. 114, Nov. 1992. p. 386-392.
Atlintas et al. “In-Process Detection of Tool Failure in Milling Using Cutting Force Models.” Journal of Engineering for Industry: vol. 111, May 1989. p. 149-157.
Bertok et al. “A System for Monitoring the Machining Operation by Referring to a Predicted Cutting Torque Pattern.” Annals of the CIRP: vol. 32, 1983. p. 439-444.
Chen et al. “Integrated Virtual Manufacturing Systems for Process Optimisation and Monitoring.” CIRP: 2002. p. 409-412.
Choi et al.Sculptured Surface Machining: Theory and Applications. Kluwer Academic Publishers: 1999. Chapters 12 and 13.
Imani et al. “An improved process simulation system for ball-end milling of sculptured surfaces.” International Journal of Machine Tools & Manufacture: vol. 38, 1998. p. 1089-1107.
Jun et al. “Evaluation of a spindle-based force sensor for monitoring and fault diagnosis of machining operations.” International Journal of Machine Tools & Manufacture: vol. 42, 2002. p. 741-751.
Kline et al. “The Effect of Runout on Cutting Geometry and Forces in End Milling.” International Journal of Machine Tools & Manufacture: vol. 23, 1983. p. 123-140.
Liang et al. “Machining Process Monitoring and Control: The State-of-the-Art.” Journal of Manufacturing Science and Engineering: vol. 126, May 2004. p. 297-310.
Martin et al. “A Review by Discussion of Condition Monitoring and Fault Diagnosis in Machine Tools.” International Journal of Mechanical Tools & Manufacture: vol. 34, 1994. p. 527-551.
Prickett et al. “An overview of approaches to end milling tool monitoring.” International Journal of Mechanical Tools & Manufacture: vol. 39, 1999. p. 105-122.
Rehorn et al. “State-of-the-art methods and results in tool condition monitoring: a review.” International Journal of Advanced Manufacturing & Technology: 2004.
Smithey et al. “A worn tool force model for three-dimensional cutting operations.” International Journal of Machine Tools & Manufacture: vol. 40, 2000. p. 1929-1950.
Spence et al. “Integrated solid modeler based solutions for machining.” Computer-Aided Design: vol. 32, 2000. p. 553-568.
Takata et al. “Model Referenced Monitoring and Diagnosis—Application to the Manufacturing System.” Computers in Industry: vol. 7, 1986. p. 31-43.
Tarng et al. “Detection of tool failure in end milling.” Journal of Materials Processing Technology: vol. 57, 1996. p. 55-61.
Weinert et al. “Estimating Tool Wear in Milling by Applying a Simulation Based Engagement Condition Approximation.” Annals of the German Academic Society for Production Engineering: 2003.
Yellowley et al. “Observations on the Mean Values of Forces, Torque and Specific Power in the Peripheral Milling Process.” International Journal of Mach. Tool: vol. 25, 1985. p. 337-346.
Zhu et al. “A Model-Based Monitoring and Fault Diagnosis Methodology for Free-Form Suface Machining Process.” Journal of Manufacturing Science and Engineering: vol. 125, Aug. 2003. p. 397-404.
Pham Thomas
Vulcan Craft LLC
Withrow & Terranova , PLLC
LandOfFree
Real-time measurement of tool forces and machining process... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Real-time measurement of tool forces and machining process..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Real-time measurement of tool forces and machining process... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3787743