专利名称：Improved tool for removing damaged
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fasteners and method for making such tool 发明人：CHALMER C. JORDAN
hell>michale jackson申请号：AU1600201
申请日：20001109
文艺复兴的实质公开号：AU1600201A
rabona公开日：
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20010606欧美怀旧经典歌曲
cure
专利内容由知识产权出版社提供
摘要：A tool for removing damaged fasteners and a method for making such tool wherein the tool (10) includes a first end (12) and a cond end (14) with an outside surface (32) and an inside surface (40) defined between ends (12) and (14). A portion (46) of inside surface (40) is in the shape of an hexagonal frustum (54) that has a major end (58) and that includes spiral splines (25). Splines (25) have constant depth between the major end (58) and the minor end (56) of frustum (54) and the relief angle (£) of splines (25) decreas in the direction from minor end (56) toward major end (58). In the method for making the tool (10), a tubular ction (118) is made from a tapered blank (91) by piercing one end of the tapered blank with a pierce punch (132). One end of the tubular ction is then driven onto a splined punch (162) to provide splines in one end of the tubular ction. The tubular ction is then stripped off of the punch (162) by a kick-out sleeve (166) and extruded through a round-to-hexagonal extrusion inrt (182) to provide portion (46) of the inner surface (40) with a tapered, hexagonal shape.
aman申请人：CHALMER C. JORDAN
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