B - Operations – Transporting – 23 – B
Patent
B - Operations, Transporting
23
B
164/19, 26/197,
B23B 1/00 (2006.01) B23P 25/00 (2006.01) C03B 23/04 (2006.01)
Patent
CA 1155757
8.11.79 1 PHN 9306 ABSTRACT: Method and device for machining glass and vitreous material as well as work-piece of glass or vitreous material machined according to the method. Method and device for machining glass and vitreous material transparent by means of a single point cutting tool, a portion of the work-piece to be worked being heated integrally and uniformly by a first spread heat supply to the softening tempera- ture and simultaneously the surface to be worked being locally heated in the region of the cutting area-at the moment of material removal and to a depth equal to the cutting depth by a second concentrated heat supply, which is superimposed on the first heat supply, all this in such a manner that a chipping operation as well as simultaneously therewith and immediately thereafter a relaxing flow of the worked surface takes place. By means of the method according to the inven- tion it is possible to chip work-pieces of glass and vitreous material so that the worked surface has a high dimensional accuracy as well as an optical sur- face quality in particular, that is to say a smooth, and transparent surface.
341811
Brehm Rudolf
Haisma Jan
Teunissen Johannes C.g.
Veldkamp Jan D.b.
N.v. Philips Gloeilampenfabrieken
Van Steinburg C.e.
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