Interior centerline based seating method

Details Interior centerline based seating method Interior centerline based seating method

1993-09-10

1994-09-06

Watson, Robert C.

Metal working

Method of mechanical manufacture

Work holding

269 481, B23B 3140

Patent

active

053436121

ABSTRACT:
An apparatus (10) and method for centering and gripping a work piece (WP) having an internal cavity (60) is disclosed. The apparatus includes a generally longitudinal post shaft (11) in an internal chamber (21) that has a head portion (42) for supporting the cavity end wall (62) and a plurality of pivot bars (22) and clamp bars (31) for engaging the cavity side wall (61) and cavity throat (63). An air driven slidable push rod (41) disposed within the shaft (11) in an internal chamber (21) causes the bars (22,31) to move from a retracted position to an expanded position. The apparatus can be inserted into the work piece (WP) while the bars (22,31) are in the retracted position and then gripped and centered by activating the push rod (41) and expanding both sets of bars (22,31).

REFERENCES:
patent: 1588200 (1926-06-01), Skelton
patent: 1873515 (1932-08-01), Warren
patent: 2615413 (1952-10-01), Adams et al.
patent: 3554565 (1971-01-01), Cashman
patent: 3980250 (1976-09-01), Persson
patent: 4304398 (1981-12-01), Crowell
patent: 5054756 (1991-10-01), Riemscheid et al.

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