Method and device for working by removal of chips of the glass or of vitreous materials, and the piece of glass or of vitreous material, worked thus

摘要

P method and device for working by chip removal of the glass and of the vitreous materials. The workpiece is heated on its part of which it is necessary to remove the chips, by a first input of heat is distributed completely and uniformly to the softening temperature, and that at the instant of the removal of chips, over a depth equal to the depth of cut and at the level of the point of view, a second input of heat is concentrated, superposed on the first, the whole being done so that the supply of heat total gives rise both to the formation of chips and the subsequent fusion immediately relaxing of the worked surface. The process according to the invention makes it possible to remove the chips of glass or of vitreous material so that the surface being worked in this way has a very high precision, of dimension, while being in particular smooth and optically transparent. / p & & p & application to the manufacture of lenses. / p