Tool changing – Including machine tool or component – Reciprocating tool machine tool
Patent
1996-10-04
1997-11-11
Briggs, William R.
Tool changing
Including machine tool or component
Reciprocating tool machine tool
83552, 83563, 483 28, B23Q 3155, B21D 3704
Patent
active
056858124
ABSTRACT:
The turret punch press has a body frame (3); a ram (51) for striking a punch (41) to punch out work (W) in cooperation with a die (35); an upper turret (39) rotatably mounted on the body frame and having a plurality of punches (41), any desired punch being selectively located at a punch area (A1); and a lower turret (33) also rotatably mounted on the body frame and having a plurality of dies (35), any desired die mated with the desired punch being selectively located at the same punch area (A1). In particular, the upper turret (39) is formed smaller in diameter than the lower turret (33), and further the upper turret (39) is dislocated eccentrically from the lower turret (33) toward the punch area (A1) to provide an open die exchange area (A2) over a part of the lower turret (33). Or else, the upper turret (39) is formed with a cutout portion (53) to provide an open die exchange area (A2) over a part of the lower turret (33) when the upper turret is disposed concentrically on the upper turret (39). In addition, since a first die delivery device (85) is disposed on the body frame (3) and at the die exchange area (A2) to minimize the load applied to the die exchange arm (65), the die (35) can be moved by the die exchange arm to and from a die mount hole (37) of the lower turret (33) at high die exchange speed and precision, thus improving the die exchange efficiency.
REFERENCES:
patent: 5346454 (1994-09-01), Hayashi
patent: 5522295 (1996-06-01), Chun
patent: 5545116 (1996-08-01), Seto
Hirose Shunzo
Seto Yoshiharu
Amada Mfg. America Inc.
Briggs William R.
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