Page 128 - Mechatronics for Safety, Security and Dependability in a New Era

Ch23-I044963.fm Page 112 Tuesday, August 1, 2006 9:09 PM
Ch23-I044963.fm
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112 Page 112 Tuesday, August 1, 2006 9:09 PM
RESULTS AND DISCUSSION

In order to verify the salient features of the extended ODM, a prototype system is implemented using
C language and Open GL graphic library. The screen image of an uncut free tool path obtained from
the implemented system is shown in Fig.3. The uncut regions are detected and then attached to the
offset contours. The result of the implemented system verifies that the devised method is robust
enough to generate uncut free tool paths.

CONCLUSIONS

In this study, we proposed the extended ODM for uncut free tool path generation. The OLE/TLE
concept enables the ODM to possess robustness and flexibility. The distinctiveness comes from the
facts: 1) The entire procedure is systematically integrated using the OLE/TLE, 2) Every procedure
deals only with the OLE/TLE, and 3) Each procedure is designed based on the OLE/TLE. Thus,
through this study the problem obviating uncut regions is resolved and the high speed milling becomes
feasible.

REFERENCES

Held M., Lukacs G. and Andor L. (1994) Pocket machining base on contour-parallel tool paths
generation by means of proximity maps, Computer Aided Design, 26:3, 189-203.
Park S. and Choi, B. (2001). Uncut free pocketing tool-paths generation using pair-wise offset
algorithm, Computer Aided Design, 33:10, 739-746.
Seo M., Kim H. and Onosato M. (2005) Systematic approach to contour-parallel tool path
generation of 2.5-D pocket with islands, Computer-Aided Design and Applications, 2:1, 213-222.

L
1
Prcwoii s[(n-1 )"J tool pulh Current [(u)' '] tool path Pocket CI,
Y
r T

T 1
Pocket OLE Island OLE
(b) Pocket/island CT.Es ami OT.Es

*

(d) Clean up path appended lo current OLF.

Figure 2: Uncut region detection procedures Figure 3: Uncut free tool path