Title:
SURFACE MACHINING METHOD
Document Type and Number:
WIPO Patent Application WO/1987/000475
Kind Code:
A1
Abstract:
A method of machining a surface in the interior of a region encompassed by a predetermined closed curve (CCL), by moving a tool (TL) along a cutting passage (PTi) in a predetermined direction (the direction of an arrow A) to carry out the surface machining of the interior of a region (AR), moving the tool along a subsequent cutting passage (PTi+1), which is shifted by a predetermined depth, to carry out the surface machining of the same region, and repeating these surface machining operations. In this method, the machining of the surface is done by determining an offset curve (OFC) which is offset outwardly from the closed curve (CCL) by a predetermined length, determining the width W in the direction of shifting (the direction of an arrow B) of region encompassed by the offset curve (OFC), determining the length which is among the lengths of the segments by which the width W is divided into n equal parts, and which is not larger than predetermined maximum cutting depth and nearest to the maximum cutting depth, to use this length as an actual cutting depth P, shifting the tool (TL) in the direction of shifting by a length equal to the cutting depth P after the completion of the surface machining operation along the cutting passage PTi, and then carrying out a surface machining operation by moving the tool along the subsequent cutting passage PTi+1. The machining-starting point (Pi) and machining-terminating point (Qi) are provided on an offset curve (OFC') which is offset outwardly by a predetermined length from the closed curve (CCL) which defines the region.
Inventors:
TANAKA KUNIO (JP)
ONISHI YASUSHI (JP)
ONISHI YASUSHI (JP)
Application Number:
PCT/JP1986/000381
Publication Date:
January 29, 1987
Filing Date:
July 21, 1986
Export Citation:
Assignee:
FANUC LTD (JP)
International Classes:
B23Q15/00; C07C259/06; G05B19/4093; G05B19/41; (IPC1-7): B23Q15/00; G05B19/403
Foreign References:
| JPS60127955A | 1985-07-08 |
Other References:
See also references of EP 0231388A4
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