Stone working – Sawing – Rotary
Patent
1992-11-09
1993-08-17
Jones, Eugenia
Stone working
Sawing
Rotary
125 15, B28D 104
Patent
active
052359603
ABSTRACT:
In the annular sawing of bars, in particular of semiconductor material, the ccurate fitting of the saw blade is of great importance. In the case of the conventional clamping systems, in which the saw blade is held on the machine rotary part by clamping forces exerted by means of a holding ring and is subjected to tension by means of an additional clamping ring, inadequate tensioning constancy is usually caused by the tensioning forces acting against the clamping forces. A tensioning behavior which is better in comparison can be achieved according to the invention by the tensioning forces being applied to the clamping ring by clamping elements releasably connected to the machine rotary part and consequently clamping forces and tensioning forces no longer being directed against one another. By the use of such clamping systems, longer saw blade service lives and higher sawing outputs can be achieved.
REFERENCES:
patent: 3329138 (1967-07-01), Lupardo
patent: 4498449 (1985-02-01), Kachajian et al.
patent: 4716881 (1988-01-01), Steere
Jones Eugenia
Wacker-Chemitronic Gesellschaft fur Elektronik-Grundstoffe mbH
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