Cutting – Tool engages work during dwell of intermittent workfeed – Work feed means controlled by means mounted on tool or tool...
Patent
1997-08-27
2000-11-14
Rada, Rinaldi H.
Cutting
Tool engages work during dwell of intermittent workfeed
Work feed means controlled by means mounted on tool or tool...
83175, 83220, 83234, 83240, 83263, 83277, 83412, 83424, 834374, 83549, 83560, 83631, 226 37, 226112, 269 58, 269153, B26D 702, B21D 4311, B65H 2318
Patent
active
061454249
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a punching machine and a method thereof which can move a work head comprising a ram and a tool in the direction of axis Y, and further can move a work clamp apparatus clamping a work in the direction of axis X.
BACKGROUND ART
Conventionally, as punching machines, a work head thereof comprising a ram and a tool is moved in the direction of axis Y, and a work clamp apparatus thereof clamping a work is moved in the direction of axis X, thereby, a work can be punched. This kind of punching machines are known in, for example, a Japanese Patent Publication No. 59-44938, a Japanese Patent Publication No. 59-45449 and so on.
According to this type of punching machine, in order to punch a thin and long work which is punched with few holes, it is necessary to punch the work at high speed. In such high-speed punching, there is a problem how to move the work clamp apparatus in the direction of axis X.
For example, it is very difficult to move at high speed a work of which dimension is 5,000.times.450 mm and thickness is 0.4 mm, in the directions of axis X and Y. Especially, it is difficult to move the work in the direction of the shorter dimension thereof.
In order to avoid for moving the work in the direction of the shorter dimension, the work head comprising the ram and the tool is moved in the direction of axis Y. However, when a work clamp apparatus is moved at high speed in the direction of axis X, the work head and the work clamp apparatus are interfered with each other, which are in a dangerous state. Further, a dead zone exists so that it is not possible to punch the work. Furthermore, there is a problem that it is not possible to use a tool of a plurality of tools in the work head, located farthest from the work clamp apparatus.
DISCLOSURE OF INVENTION
It is an object of the present invention to provide a punching machine and a method thereof which can move a work clamp apparatus clamping a work in the direction of axis X without interfering with a work head, so that a dead zone does not exist and that the work is punched at high speed.
To achieve the object, a punching machine comprises a work head having a ram and a tool and moving in a direction of axis Y on a body frame, a first work movement positioning apparatus mounted at one side in the direction of axis X in a movable area of the work head in order to move and position the work in the direction of axis X, and a second work movement positioning apparatus mounted at the other side in the direction of axis X in order to move and position the work in the direction of axis X.
Accordingly, the work head comprising the ram and the tool which can move in the direction of axis Y is mounted on the body frame. The first and second work movement positioning apparatuses are mounted at both sides in the direction of axis X in the movable area of the work head, respectively. Thereby, it is possible to punch the work at high speed. Further, it is not necessary for the first and second work movement positioning apparatuses to enter into the movable area of the work head. Accordingly, it is possible to avoid interfering with the work head so that the dead zone does not exist.
In a particular embodiment, the first and second work positioning apparatuses comprise a carriage for axis X having a plurality of work clamps, a feed screw for moving a nut member integrated with the carriage for axis X, and a drive motor for rotating the feed screw, respectively.
Accordingly, the first and second work movement positioning apparatuses can be driven controlled individually. For example, while the work is positioned by the first or second work movement positioning apparatus, the second or first work movement positioning apparatus can be moved to an arbitrary work holding stand-by position in order to position the work.
The punching machine can further comprise a clutch mounted on the body frame so that the feed screws are engaged and disengaged by the clutch.
Accordingly, if necessary, each feed screw is engaged by the clutch
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Matsuda Morikatsu
Matsuno Eiji
Amada Company Limited
Amada Engineering Center Co., Ltd.
Goodman Charles
Rada Rinaldi H.
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