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Title: Rotary fast tool servo system and methods

Abstract

A high bandwidth rotary fast tool servo provides tool motion in a direction nominally parallel to the surface-normal of a workpiece at the point of contact between the cutting tool and workpiece. Three or more flexure blades having all ends fixed are used to form an axis of rotation for a swing arm that carries a cutting tool at a set radius from the axis of rotation. An actuator rotates a swing arm assembly such that a cutting tool is moved in and away from the lathe-mounted, rotating workpiece in a rapid and controlled manner in order to machine the workpiece. One or more position sensors provides rotation and position information for a swing arm to a control system. A control system commands and coordinates motion of the fast tool servo with the motion of a spindle, rotating table, cross-feed slide, and in-feed slide of a precision lathe.

Inventors:
 [1];  [2]
  1. Cambridge, MA
  2. Plaistow, NH
Publication Date:
Research Org.:
Massachusetts Institute of Technology (Cambridge, MA)
Sponsoring Org.:
USDOE
OSTI Identifier:
1013663
Patent Number(s):
7,574,947
Application Number:
11/447,473
Assignee:
Massachusetts Institute of Technology (Cambridge, MA)
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Montesanti, Richard C, Trumper, David L, and Kirtley, Jr., James L. Rotary fast tool servo system and methods. United States: N. p., 2009. Web.
Montesanti, Richard C, Trumper, David L, & Kirtley, Jr., James L. Rotary fast tool servo system and methods. United States.
Montesanti, Richard C, Trumper, David L, and Kirtley, Jr., James L. Tue . "Rotary fast tool servo system and methods". United States. https://www.osti.gov/servlets/purl/1013663.
@article{osti_1013663,
title = {Rotary fast tool servo system and methods},
author = {Montesanti, Richard C and Trumper, David L and Kirtley, Jr., James L.},
abstractNote = {A high bandwidth rotary fast tool servo provides tool motion in a direction nominally parallel to the surface-normal of a workpiece at the point of contact between the cutting tool and workpiece. Three or more flexure blades having all ends fixed are used to form an axis of rotation for a swing arm that carries a cutting tool at a set radius from the axis of rotation. An actuator rotates a swing arm assembly such that a cutting tool is moved in and away from the lathe-mounted, rotating workpiece in a rapid and controlled manner in order to machine the workpiece. One or more position sensors provides rotation and position information for a swing arm to a control system. A control system commands and coordinates motion of the fast tool servo with the motion of a spindle, rotating table, cross-feed slide, and in-feed slide of a precision lathe.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2009},
month = {8}
}

Patent:

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Works referenced in this record:

A new symmetric scanning tunneling microscope design
journal, March 1988

  • Davidsson, P.; Claeson, T.; Pehrson, S.
  • Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films, Vol. 6, Issue 2
  • DOI: 10.1116/1.575421

Design of a rotary fast tool servo for ophthalmic lens fabrication
journal, October 1999