Abrasive fluid jet radius edge cutting of glass

Details Abrasive fluid jet radius edge cutting of glass Abrasive fluid jet radius edge cutting of glass

1986-11-12

1987-12-08

Schmidt, Frederick R.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

51321, 51439, B24C 504, B24C 100

Patent

active

047110562

ABSTRACT:
Producing a radius or curved edge in cutting glass by means of a high pressure abrasive fluid jet. Abrasive particles are aspirated in carefully controlled amounts into a fluid stream which is directed through a nozzle tube having an elongated passageway of small diameter, and the fluid is discharged against and closely adjacent the surface of the glass as a highly collimated jet carrying the abrasive particles. The passageway gradually increases in diameter, or flares outwardly, at the discharge end of the nozzle tube, allowing the collimated stream to diverge within confined limits immediately prior to impinging upon the glass surface. The abrasive particle-containing conical fluid jet cuts through the glass along the path followed by the axis of the nozzle tube, while the glass to either side of the cut is abraded by progressively decreasing amounts toward the lateral extremities of the fluid jet. The glass cut is thus formed with a curved edge on the entrant side of the cut. The glass may be similarly treated from the opposite direction by the abrasive jet to produce a completely rounded edge.

REFERENCES:
patent: 2985050 (1961-05-01), Schwacha
patent: 3524367 (1970-08-01), Franz
patent: 3888054 (1975-06-01), Maselli
patent: 4449332 (1984-05-01), Griffiths
patent: 4478368 (1984-10-01), Yie
patent: 4545157 (1985-10-01), Saurwein
"Abrasive Jet Machining"; The Tool and Manufacturing Engineer; Ingulli; Nov. 1967.

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