Screw head punch needle

The relates to a screw head punching needle which comprises a main body and a groove formed on the end part of the main body, wherein the center of the groove forms a convex punching head of which the peripheral surface is additionally provided with a vane lower than the punching head. When screw he...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	GUOZHOU LIN
Format:	Patent
Sprache:	eng
Schlagworte:	MACHINE TOOLS MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS PUNCHING METAL THREAD CUTTING TRANSPORTING WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTIONTHEREWITH WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
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