Metal deforming – With cutting – By shearing tool-couple
Reexamination Certificate
2005-08-26
2008-05-06
Crane, Daniel C (Department: 3725)
Metal deforming
With cutting
By shearing tool-couple
C072S075000, C029S090010
Reexamination Certificate
active
07367210
ABSTRACT:
The present invention provides a deburring device for a punch press which can remove burrs produced along a slot or a cut portion formed in a plate material by punching or cutting using a punch press so that the removal is carried out as a process with the same punch press. A deburring device6for a punch press has an upper tool7and a lower tool8arranged opposite each other. The upper and lower tools7, 8each have a ball holding member22, 32, respectively, and a ball23, 33, respectively, rotatably supported by the ball holding member and projecting from a surface of the ball holding member22, 32toward an opposite surface of the opposite ball holding member32, 22. Each of the upper and lower balls23, 33has a diameter larger than the width of the slot A, in its portion projecting from the ball holding member22, 32, respectively, the slot A being formed in the plate material W so as to extend across the plane. The plate material W moves with the vertical pair of balls23, 33partly fitted into the slot A and with the plate material W sandwiched between the upper and lower balls23, 33to continuously remove burrs (a) produced along a longitudinal direction of the slot A. The deburring device6continuously removes not only the burrs produced along the slot A but also those produced along a cut portion in the plate material W as described above.
REFERENCES:
patent: 3478558 (1969-11-01), Miller et al.
patent: 4089204 (1978-05-01), Neilsen
patent: 6131430 (2000-10-01), Schneider et al.
patent: 7168364 (2007-01-01), Schneider
patent: 2001/0042453 (2001-11-01), Schneider
patent: 3469929 (2003-09-01), None
Utility Model Abstracts of Japan, Publication No. H3-42320, published on Apr. 22, 1991.
Crane Daniel C
Murata Kikai Kabushiki Kaisha
Westerman, Hattori, Daniels & Adrian , LLP.
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