Method for restoring punch and die alignment of a turret-type pu

Details Method for restoring punch and die alignment of a turret-type pu Method for restoring punch and die alignment of a turret-type pu

1992-08-26

1993-11-23

Rosenbaum, Mark

Metal working

Method of mechanical manufacture

Repairing

2940211, 2940219, 83552, B23P 600, B26D 508

Patent

active

052632377

ABSTRACT:
A method for restoring the alignment of the apertures of the upper and lower turrets of a punch press machine includes the steps of determining the radial and angular misalignment, if any, of an individual turret aperture relative to a reference axis such as, for example, the axis of rotation of the turrets. Any angular misalignment of a turret aperture relative to the reference axis is corrected by re-positioning the respective index pin assembly which maintains the turret in a predetermined angular position. Any radial misalignment of the turret aperture is corrected by a re-boring procedure in which a cutting tool supported on a boring bar is advanced through the turret at the area of the respective aperture to re-bore the aperture to a new, enlarged diameter with the walls of the aperture being concentric with an axis at the desired radial spacing from the reference axis. A preferred cutting tool for use in the re-boring procedure includes three cutting tips, each supported at a different radial spacing from the axis of the cutting tool. A cylindrical sleeve insert can be optionally installed in a newly enlarged turret aperture with the cylindrical sleeve insert having an inside diameter corresponding to the outside diameter of a respective punch holder normally supported in the turret aperture.

REFERENCES:
patent: 4343210 (1982-08-01), Kuroyone
patent: 4380182 (1983-04-01), Bredow et al.
patent: 4412469 (1983-11-01), Hirata et al.
patent: 4532845 (1985-08-01), Jinnouchi
patent: 4658688 (1987-08-01), Shah et al.

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