Brittle material cutting method
AssigneeNippei Toyama Corporation
InventorNoriyuki Takeuchi
Life of this patent
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Abstract
In a method of cutting a workpiece of brittle material with a wire by using a machining solution containing abrasive grains, the workpiece is pushed against the wire from above, and a machining solution pooling vessel is disposed below the workpiece, to immerse the cut portion of the workpiece in the machining solution in the vessel, and an ultrasonic oscillator is provided for the machining solution pooling vessel to apply ultrasonic waves to the machining solution during machining, whereby difficulties that the machined surface is scratched or cracked by the abrasive grains, and the machining solution is deteriorated in cutting capacity are eliminated, and the machining accuracy and efficiency are improved.
Claims3
In an apparatus for cutting a workpiece comprising brittle material in which a wire (1) is supplied from a wire supply reel (11), wound over a plurality of grooved rollers (2), and wound on a wire take-up reel (12), and while, between said grooved rollers (2), said wire (1) and said workpiece (3) comprising brittle material are pushed against each other, a machining solution (5) containing abrasive grains is supplied to said workpiece, to cut said workpiece, a method of cutting said workpiece comprising brittle material comprising the steps of:
- pushing said workpiece (3) downwardly against said wire (1) from above with a pushing member positioned above said workpiece,
- immersing the substantially entire cut portion of said workpiece in a machining solution in a machining solution pooling vessel (7) provided below said workpiece (3);
- and
- maintaining the cut portion of said workpiece substantially in its entirety in said machining solution in said machining solution pooling vessel (7) while said workpiece is being cut with the portion of the workpiece presently being cut not submerged in the machining solution, thereby preventing said abrasive grains from adhering to said cut portion of said workpiece.
Dependencies are inferred from the claim text.