Scribing wheel, method of manufacturing the scribing wheel, use of such wheel

The scribing wheel achieves increase in its longevity and ensures high strength in end face of segmented substrate obtained by severing brittle material-made substrate scribed by the scribing wheel. Disc-shaped scribing-wheel base material in use is so designed that mid-portion of disc periphery has...

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Bibliographische Detailangaben
1. Verfasser:	TOMEI, NAOKO
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CHEMISTRY CUTTING DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING,CUTTING-OUT, STAMPING-OUT OR SEVERING DRESSING OR CONDITIONING OF ABRADING SURFACES FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS GLASS GRINDING HAND CUTTING TOOLS MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES METALLURGY MINERAL OR SLAG WOOL PERFORMING OPERATIONS POLISHING SEVERING TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TRANSPORTING WORKING CEMENT, CLAY, OR STONE WORKING STONE OR STONE-LIKE MATERIALS
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Beschreibung
Zusammenfassung:	The scribing wheel achieves increase in its longevity and ensures high strength in end face of segmented substrate obtained by severing brittle material-made substrate scribed by the scribing wheel. Disc-shaped scribing-wheel base material in use is so designed that mid-portion of disc periphery has the largest diameter. Diamond film is formed on the periphery by CVD method. The periphery is ground in the middle so that a plane including a circle defined by ridge line becomes perpendicular to the central axis of the scribing wheel. This helps reduce the roughness of ridge part. When the scribing wheel is used for scribing on brittle material-made substrate, upon severing of the scribed substrate, the end face of the segmented substrate can be made with greater accuracy and higher strength. The scribing wheel suffers little from abrasion at its ridge part even under continuous scribing, and thus enjoys longer operating life.