초록 ▼

A workpiece (22) having a periphery is centered using a centering apparatus (20) having a workpiece spindle (24, 28) operable to rotate the workpiece (22) about a rotational axis (26), and a centering head (29). The centering head (29) includes a mount (30) movable in a movement direction lying in a

A workpiece (22) having a periphery is centered using a centering apparatus (20) having a workpiece spindle (24, 28) operable to rotate the workpiece (22) about a rotational axis (26), and a centering head (29). The centering head (29) includes a mount (30) movable in a movement direction lying in a plane (40) perpendicular to the rotational axis (26), and generally along a radial line (38) extending outwardly from the rotational axis (26). A swivel head (32) is pivotably supported on the mount (30) and is pivotable about a pivot axis (46) parallel to the rotational axis (26). The swivel head (32) has a pair of bearings (66) spaced apart along a direction lying generally perpendicular to the movement direction, with the bearing axis of each bearing (46) parallel to the rotational axis (26). A distance measuring device (34) is operable to measure the distance between the periphery of the workpiece (22) and a measurement location on the mount (30). The method includes mounting the workpiece (22) on the spindle (24, 28), positioning the centering head (29) at a location adjacent to the periphery (82) of the workpiece (22), rotating the spindle (24, 28) to rotate the workpiece (22), and measuring a runout curve using the distance measuring device (34). The centering head (29) is moved to contact the bearings (46) to the workpiece (22). The workpiece (22) is pushed with the bearings (46) in a direction and by an amount so as to reduce a constant term of the runout curve toward zero.

대표청구항 ▼

A workpiece (22) having a periphery is centered using a centering apparatus (20) having a workpiece spindle (24, 28) operable to rotate the workpiece (22) about a rotational axis (26), and a centering head (29). The centering head (29) includes a mount (30) movable in a movement direction lying in a

A workpiece (22) having a periphery is centered using a centering apparatus (20) having a workpiece spindle (24, 28) operable to rotate the workpiece (22) about a rotational axis (26), and a centering head (29). The centering head (29) includes a mount (30) movable in a movement direction lying in a plane (40) perpendicular to the rotational axis (26), and generally along a radial line (38) extending outwardly from the rotational axis (26). A swivel head (32) is pivotably supported on the mount (30) and is pivotable about a pivot axis (46) parallel to the rotational axis (26). The swivel head (32) has a pair of bearings (66) spaced apart along a direction lying generally perpendicular to the movement direction, with the bearing axis of each bearing (46) parallel to the rotational axis (26). A distance measuring device (34) is operable to measure the distance between the periphery of the workpiece (22) and a measurement location on the mount (30). The method includes mounting the workpiece (22) on the spindle (24, 28), positioning the centering head (29) at a location adjacent to the periphery (82) of the workpiece (22), rotating the spindle (24, 28) to rotate the workpiece (22), and measuring a runout curve using the distance measuring device (34). The centering head (29) is moved to contact the bearings (46) to the workpiece (22). The workpiece (22) is pushed with the bearings (46) in a direction and by an amount so as to reduce a constant term of the runout curve toward zero. ng non-threaded fasteners of various sizes from a first substrate anchored to a second substrate by said fasteners, each said tool comprising: a shank having a longitudinal axis, first and second ends, and an exterior surface; a driving head located on said first end of said shank; a fastener exposure/dimpling head located on said second end of said shank; said fastener exposure/dimpling head including a fastener receiving cavity extending into said shank, a cutting lip extending outwardly from said fastener receiving cavity, said cutting lip having an outer edge that lies entirely within the same plane, and a rounded dimpling section located between said cutting lip and said exterior surface of said shank; each said tool in said set having a different size fastener receiving cavity. 14. The tool set of claim 13 wherein there are first, second and third tools, said first tool having a fastener receiving cavity adapted to receive the head of a 2D nail, said second tool having a fastener receiving cavity sized to receive the heads of nails having a size between 3D and about 8D, said third tool having a fastener receiving cavity adapted to receive the heads of nails having a size between about 10D and about 20D. 15. A tool for use in removing a non-threaded fastener from a first substrate anchored to a second substrate by said fastener, said tool comprising: a shank having a longitudinal axis, first and second ends, and an exterior surface; a driving head located on said first end of said shank; a fastener exposure/dimpling head located on said second end of said shank; said fastener exposure/dimpling head including a fastener receiving cavity extending into said shank, said fastener receiving cavity having a cross-section selected from the group consisting of circular and substantially rectangular, a cutting lip extending outwardly from said fastener receiving cavity, and, a dimpling section located between said cutting lip and said exterior surface of said shank. 16. The tool of claim 15 wherein said cross-section of said fastener receiving cavity is circular. 17. The tool of claim 15 wherein said cross-section of said fastener receiving cavity is substantially rectangular. 18. A tool for use in removing a non-threaded fastener from a first substrate anchored to a second substrate by said fastener, said tool comprising: a shank having a longitudinal axis, first and second ends, and an exterior surface; a driving head located on said first end of said shank; a fastener exposure/dimpling head located on said second of said shank; said fastener exposure/dimpling head including a fastener receiving cavity extending into said shank, a cutting lip extending outwardly from said fastener receiving cavity, and a dimpling section located between said cutting lip and said exterior surface of said shank; and a cleanout channel communicating said fastener receiving cavity with the exterior surface of said shank. 19. The tool of claim 18 wherein said cleanout channel extends upwards at an angle to the longitudinal axis of said shank. 20. The tool of claim 19 wherein said angle is about 30 degrees.