skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Method for maintaining a cutting blade centered in a kerf

Abstract

A saw having a self-pumped hydrodynamic blade guide or bearing for retaining the saw blade in a centered position in the saw kerf (width of cut made by the saw). The hydrodynamic blade guide or bearing utilizes pockets or grooves incorporated into the sides of the blade. The saw kerf in the workpiece provides the guide or bearing stator surface. Both sides of the blade entrain cutting fluid as the blade enters the kerf in the workpiece, and the trapped fluid provides pressure between the blade and the workpiece as an inverse function of the gap between the blade surface and the workpiece surface. If the blade wanders from the center of the kerf, then one gap will increase and one gap will decrease and the consequent pressure difference between the two sides of the blade will cause the blade to re-center itself in the kerf. Saws using the hydrodynamic blade guide or bearing have particular application in slicing slabs from boules of single crystal materials, for example, as well as for cutting other difficult to saw materials such as ceramics, glass, and brittle composite materials.

Inventors:
 [1];  [2];  [3]
  1. Dublin, CA
  2. Pleasanton, CA
  3. Livermore, CA
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
874550
Patent Number(s):
US 6412377
Assignee:
The Regents of the University of California (Oakland, CA)
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; maintaining; cutting; blade; centered; kerf; self-pumped; hydrodynamic; guide; bearing; retaining; position; width; cut; utilizes; pockets; grooves; incorporated; workpiece; provides; stator; surface; entrain; fluid; enters; trapped; pressure; inverse; function; gap; wanders; center; increase; decrease; consequent; difference; re-center; saws; application; slicing; slabs; boules; single; crystal; materials; example; difficult; ceramics; glass; brittle; composite; single crystal; composite material; cutting blade; /83/384/

Citation Formats

Blaedel, Kenneth L, Davis, Pete J, and Landram, Charles S. Method for maintaining a cutting blade centered in a kerf. United States: N. p., 2002. Web.
Blaedel, Kenneth L, Davis, Pete J, & Landram, Charles S. Method for maintaining a cutting blade centered in a kerf. United States.
Blaedel, Kenneth L, Davis, Pete J, and Landram, Charles S. Tue . "Method for maintaining a cutting blade centered in a kerf". United States. https://www.osti.gov/servlets/purl/874550.
@article{osti_874550,
title = {Method for maintaining a cutting blade centered in a kerf},
author = {Blaedel, Kenneth L and Davis, Pete J and Landram, Charles S},
abstractNote = {A saw having a self-pumped hydrodynamic blade guide or bearing for retaining the saw blade in a centered position in the saw kerf (width of cut made by the saw). The hydrodynamic blade guide or bearing utilizes pockets or grooves incorporated into the sides of the blade. The saw kerf in the workpiece provides the guide or bearing stator surface. Both sides of the blade entrain cutting fluid as the blade enters the kerf in the workpiece, and the trapped fluid provides pressure between the blade and the workpiece as an inverse function of the gap between the blade surface and the workpiece surface. If the blade wanders from the center of the kerf, then one gap will increase and one gap will decrease and the consequent pressure difference between the two sides of the blade will cause the blade to re-center itself in the kerf. Saws using the hydrodynamic blade guide or bearing have particular application in slicing slabs from boules of single crystal materials, for example, as well as for cutting other difficult to saw materials such as ceramics, glass, and brittle composite materials.},
doi = {},
url = {https://www.osti.gov/biblio/874550}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2002},
month = {1}
}

Patent:

Save / Share: