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Modulated Tool Path (MTP) Chatter Suppression System

Y-12 National Security Complex

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Technology Marketing Summary

The Modulated Tool Path (MTP) chatter suppression system builds on the general dynamic machine characterization and control capabilities associated with the MTP chip breaking system development. Chatter is caused by the vibration of the machine tool as it encounters previous cutting passes. Through the phase shift of the cutter motion associated with the MTP process, the mechanism that is the basis for the chatter is eliminated.


The MTP uses computer modeling and simulation techniques and does not require a reduction of feeds or speeds. It allows automatic chip breaking.

  • Increased production by eliminating the need to reduce feeds or speeds
  • Improved quality of the machined surface
  • Eliminated down time
  • Simplified and less costly chip-processing/ recycling
  • Decreased product delivery delays
  • Reduced cutting tool temperatures
  • Reduced part flaws
  • Improved workplace safety
  • Reduced machine repairs
Applications and Industries
  • Turning and boring operations involving a variety of materials
  • New and existing machines
  • Most machining operations
More Information

TRL 3: Active research and development initiated.

2010 R&D 100 Award

Patents and Patent Applications
ID Number
Title and Abstract
Primary Lab
Patent 8,610,393
Method and apparatus for characterizing and enhancing the dynamic performance of machine tools
Disclosed are various systems and methods for assessing and improving the capability of a machine tool. The disclosure applies to machine tools having at least one slide configured to move along a motion axis. Various patterns of dynamic excitation commands are employed to drive the one or more slides, typically involving repetitive short distance displacements. A quantification of a measurable merit of machine tool response to the one or more patterns of dynamic excitation commands is typically derived for the machine tool. Examples of measurable merits of machine tool performance include dynamic one axis positional accuracy of the machine tool, dynamic cross-axis stability of the machine tool, and dynamic multi-axis positional accuracy of the machine tool.
Y-12 National Security Complex 12/17/2013
Patent 8,240,234
Methods and systems for chip breaking in turning applications using CNC toolpaths
The present invention provides methods and systems for chip breaking, controlling cutting tool wear, and the like in turning, boring, and other applications, including: engaging a workpiece with a cutting tool in a feed direction along a toolpath, superimposing an oscillation in the feed direction on the toolpath, and dynamically or non-dynamically varying the oscillation superimposed in the feed direction on the toolpath such that interrupted cuts and chips of a predetermined length or less are produced. These systems take full advantage of computer numerical control (CNC) methodologies.
Y-12 National Security Complex 08/14/2012
Technology Status
Development StageAvailabilityPublishedLast Updated

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