SHEARING BLADE AND METHOD OF EXTRUSION-MACHINING ALUMINUM

PROBLEM TO BE SOLVED: To provide a shearing blade with which a cut surface having high smoothness is obtained and the fine cut surface is maintainable by reducing adhesion of a discard, damage and wear when cutting the discard in hot extrusion machining. SOLUTION: In the hot extrusion machining of a...

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Bibliographische Detailangaben
Hauptverfasser:	NAKADA KAZUTAKA, MOMO YOICHI
Format:	Patent
Sprache:	eng
Schlagworte:	AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PUNCHING METAL TRANSPORTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a shearing blade with which a cut surface having high smoothness is obtained and the fine cut surface is maintainable by reducing adhesion of a discard, damage and wear when cutting the discard in hot extrusion machining. SOLUTION: In the hot extrusion machining of aluminum, the shearing blade (1) is lowered and cuts the discard. An adhesion preventing part (11) in the tip part of the cutting edge (10) is formed by a plane inclined to a plane perpendicular to the moving direction (the arrow) of the shearing blade (10) and the inclined angle (θ1) to the moving direction of the shearing blade of a first rake face continued to the adhesion preventing part (11) and the inclined angle (θ2) to the moving direction of the shearing blade of a second rake face continued to this first rake face satisfy the relationship of θ1>θ2. COPYRIGHT: (C)2011,JPO&INPIT