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IJAT Vol.14 No.3 pp. 491-499
doi: 10.20965/ijat.2020.p0491
(2020)

Paper:

Development of Scanning Line Tool Path Generation Algorithm Using Boundary Position Information of Approximate Polyhedron of Complex Molds

Yuki Saito, Jun’ichi Kaneko, Takeyuki Abe, and Kenichiro Horio

Saitama University
255 Shimo-okubo, Sakura-ku, Saitama City, Saitama 338-8570, Japan

Corresponding author

Received:
November 5, 2019
Accepted:
January 31, 2020
Published:
May 5, 2020
Keywords:
CAM, machine tools, feed speed, numerical control, cutting
Abstract

In the manufacturing industry, molds are required for mass production operations, and the industry’s recent small lot, multi-product production systems call for such molds to be made by NC machine tools in short periods of time. The tool path point coordinates of NC machine tools are derived by geometric computations, which are used in turn to derive the polyhedron-approximated mold surface and the contact positions of the tool. In the conventional method, however, placing surplus tool path points on the planar section makes it difficult to acquire the boundary position coordinate values in the vicinity of the boundaries of the polyhedrons that constitute the curved surface, resulting in errors in the path point coordinates for the polyhedron-approximated shape of the mold surface. In this study, therefore, we have developed CAM algorithms that can reduce the tool path errors and suppress the number of tool path points by not deriving the path point coordinates in the linearly approximated section. This is done by using the boundary information of the approximate polyhedrons that constitute the concave section of the mold model.

Cite this article as:
Yuki Saito, Jun’ichi Kaneko, Takeyuki Abe, and Kenichiro Horio, “Development of Scanning Line Tool Path Generation Algorithm Using Boundary Position Information of Approximate Polyhedron of Complex Molds,” Int. J. Automation Technol., Vol.14, No.3, pp. 491-499, 2020.
Data files:
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Last updated on Sep. 19, 2021