Abstract:
Machine for machining, in particular press-forming, wire-like material (1, 1a), comprising: a vertically extending frame comprising two half-frames (10,20) arranged opposite each other in the vertical direction (Z-Z), so as to form an interspace (102), the frame having, connected thereto, at least a first machining unit (100) and a second machining unit (200), each suitable for machining, in particular for upsetting or extruding, a respective section (1b, 1c) of wire-like material (1a), said units each comprising a top machining head (110,210) and a bottom machining head (210,220) situated opposite each other in the vertical direction (Z-Z) and arranged on opposite sides of the interspace (1020); a wheel (400) lying in a horizontal plane (X-Y), rotating about a vertical axis (Z-Z) and housed inside the said interspace (1020); wherein the wheel (400) carries devices for gripping a section of wire (1b) and for rotating it between a horizontally oriented position for transporting the section of wire (1b) and a vertically oriented position for the machining of at least one of the opposite ends of the said section of wire (1b) by one of said machining units.
Abstract:
A tool for removing damaged fasteners and a method for making such tool. A portion (46) of inside surface (40) of tool (10) is in the shape of a hexagonal frustum (54) 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) increases in the direction from minor end (56) toward major end (58). In the method for making the tool (10), a tubular section (118) is made from a tapered blank (91) by piercing one end of the tapered blank with a pierce punch (132). The tubular section is then driven onto a splined punch (162) to provide a splined tubular section (165) having splines in one end. The splined tubular section is then extruded through a round-to-hexagonal extrusion insert (182) to provide a splined polygonal section (173) having an inner surface with a tapered, hexagonal shape. A modified round-to-hexagonal extrusion insert (206) provides a tool with corners (202) on the polygonal surface. A modified tool (310) with splines (325) in a clockwise spiral is used to secure tamper-resistant fasteners.
Abstract:
A tool for removing damaged fasteners and a method for making such tool wherein the tool (10) includes a first end (12) and a second 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 ( POUND ) of splines (25) decreases in the direction from minor end (56) toward major end (58). In the method for making the tool (10), a tubular section (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 section is then driven onto a splined punch (162) to provide splines in one end of the tubular section. The tubular section is then stripped off of the punch (162) by a kickout sleeve (166) and extruded through a round-to-hexagonal extrusion insert (182) to provide portion (46) of the inner surface (40) with a tapered, hexagonal shape.
Abstract:
A method of making a recess (58) in a drive socket (100) and the like includes forming a groove (72) to extend along a face of an elongated drive opening (66) in a metal workpiece (38) from one end of its drive opening (66), moving material from the surface of the groove (72) to increase its depth from its outer end along only a portion of its length and gathering the material so moved from the groove surface to form a ledge (90) between ends of the groove (72), whereby a recess (58) is defined by the groove extending beyond the ledge (90). In addition, a female drive device for socket wrenches and the like is disclosed having an elongated drive opening (66), a groove (72) longitudinally extending from one end of the drive opening (66) along a face of the drive opening, and a ledge (90) between ends of the groove (72a). The ledge (90) protrudes radially inwardly such that a recess (58) is defined by the groove extending beyond the ledge (90) for retaining a male drive member.