Method and device for cutting flat work pieces made of a brittle material
A laser beam having a line-shaped beam profile with a following cooling spot in order to increase thermomechanic tension which is moved along a separating line having predefined contours is known in prior art. In order to cut out a given contour using simple mean, (free-shape cut) the method accordi...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | A laser beam having a line-shaped beam profile with a following cooling spot in order to increase thermomechanic tension which is moved along a separating line having predefined contours is known in prior art. In order to cut out a given contour using simple mean, (free-shape cut) the method according to the invention relates to a line-shaped bum spot (
1
) generated on a work piece. Said spot is of significantly increased intensity at both ends (
1
a,
1
b
). Said spot is moved along the cut line (
2
) in such a way that both said ends lie on the cut line (
2
) and the length (S) thereof depends on the curvature of the contour of the cut line (
2
). |
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