Evaluation and Improvement of Productivity in High-Speed NC Machining-Reference-Cited by-同舟云学术

Evaluation and Improvement of Productivity in High-Speed NC Machining

Published:1999-06-01 Issue:3 Volume:122 Page:556-561
ISSN:1087-1357
Container-title:Journal of Manufacturing Science and Engineering
language:en
Short-container-title:

Author:

Yan X.¹,Shirase K.²,Hirao M.¹,Yasui T.¹

Affiliation:

1. Faculty of Technology, Kanazawa University, Kanazawa, Japan

2. Faculty of Engineering, Osaka University, Osaka, Japan

Abstract

The productivity of machining centers is influenced inherently by the quality of NC programs. To evaluate productivity, first an effective feedrate factor and a productivity evaluation factor are proposed. It has been found that in high-speed machining, these two factors depend on a kinematic factor which is a function of (1) command feedrate, (2) average per-block travel of the tool, (3) moving vectorial variation of the tool, and (4) ac/deceleration or time constants. Then an NC program simulator has been developed to evaluate productivity. With the simulator, the machining time can be calculated accurately and the cutting conditions can be extracted. Finally, three NC programs were implemented on high-speed machining centers and analyzed by the simulator. It was found that in mold and die machining, the productivity can be improved by increasing the acceleration and average travel and reducing the vectorial variation of the tool rather than the command feedrate. [S1087-1357(00)01303-4]

Publisher

ASME International

Subject

Industrial and Manufacturing Engineering,Computer Science Applications,Mechanical Engineering,Control and Systems Engineering

Link

http://asmedigitalcollection.asme.org/manufacturingscience/article-pdf/122/3/556/5932881/556_1.pdf

Reference16 articles.

1. Yan, X., 1998, “Evaluation and Improvement of Productivity for Machining Centers,” Ph.D. Dissertation, Kanazawa University.

2. Saito, S., 1994, “Shortening of Non-Cutting Time for Machining Center,” Machinery & Tools, No. 2, pp. 43–49 (in Japanese).

3. Hirose, T. , 1995, “On the Software for Using 5-Axis Control MC Efficiently,” Machinery & Tools, 12, pp. 22–31 (in Japanese).

4. Yan, X. et al., 1997, “Improving Productivity of Machining Centers Based on NC Program Diagnostic System,” J. Jpn. Soc. Precis. Eng., 63, No. 7, pp. 1044–1048 (in Japanese).

5. Ryoki, M. , 1987, “High Speed 3-Dimensional CNC,” J. Jpn. Soc. Precis. Eng., 53, No. 7, pp. 1018–1021 (in Japanese).

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