Boots – shoes – and leggings
Patent
1989-06-01
1990-03-27
MacDonald, Allen
Boots, shoes, and leggings
364521, G06F 700
Patent
active
049126440
ABSTRACT:
A method of and apparatus for unfolding a sheet metal part has a three-dimensional scanner which is moved along the profile of a three-dimensional surface model to decompose the three-dimensional surface model into groups of pattern entities. Auxiliary lines interconnecting the end points of pattern entities of the internal shape of the sheet metal part and the end points of the pattern entities of the external shape of the sheet metal pattern including the end points of the pattern entities of the internal shape are produced. An unfolding three-dimensional surface model is constructed by assembling the pattern entities and the auxiliary lines, and then the reconstructed three-dimensional surface model is scanned by the three-dimensional scanner to unfold it into a two-dimensional unfolded pattern. Bends in the sheet metal part are detected from the variation of the direction of the scanning axis of the three-dimensional scanner, the length of the pattern entities each having a portion corresponding to a bend is corrected by a bending allowance, and a bending line is added to the unfolded pattern at a position corresponding to a bend. When the three dimensional surface model has an auxiliary line, the pattern entities of the corresponding internal shape are unfolded, and then the auxiliary line is selected after the completion of the scanning operation.
Aoyama Yoshitada
Haga Takeshi
MacDonald Allen
OKI Electric Industry Co., Ltd.
LandOfFree
Method of and apparatus for unfolding a sheet metal part employi does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of and apparatus for unfolding a sheet metal part employi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of and apparatus for unfolding a sheet metal part employi will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1655846