Based on the spade drill point’s mathematical models established in Part 1 of this paper, a detailed methodology for the analysis of the cutting edges and angle distributions along these edges is given. The analysis addresses the most important geometric elements of the bit including the tip, major cutting edge, and the chisel edge profiles, as well as the rake and clearance angle distribution along these cutting edges. In unison, the geometric model of the spade bit and the analysis procedure described in this part of the paper have laid the foundation for a methodology and a software package for a detailed geometric analysis of all relevant cutting mechanics related geometric entities of the drill. This, in turn, constitutes the first prerequisite for assessing the cutting performance of these tools.
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Topology of Spade Drills for Wood Drilling Operations Part 2: Spade Drill Point Cutting Geometry Analysis
Hanxin Zhao,
Hanxin Zhao
Department of Mechanical Engineering, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3111
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Kornel F. Ehmann
Kornel F. Ehmann
Department of Mechanical Engineering, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3111
Search for other works by this author on:
Hanxin Zhao
Department of Mechanical Engineering, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3111
Kornel F. Ehmann
Department of Mechanical Engineering, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3111
Contributed by the Manufacturing Engineering Division for publication in the JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING. Manuscript received October 16, 2001; Revised March 17, 2003. Associate Editor: Y. Shin.
J. Manuf. Sci. Eng. May 2005, 127(2): 310-318 (9 pages)
Published Online: April 25, 2005
Article history
Received:
October 16, 2001
Revised:
March 17, 2003
Online:
April 25, 2005
Citation
Zhao , H., and Ehmann, K. F. (April 25, 2005). "Topology of Spade Drills for Wood Drilling Operations Part 2: Spade Drill Point Cutting Geometry Analysis ." ASME. J. Manuf. Sci. Eng. May 2005; 127(2): 310–318. https://doi.org/10.1115/1.1794161
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