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US 5,938,378 AGranted
Apparatus for boring webs of steel sections
AssigneeOmi Kogyo Co., Ltd.
InventorsShohei Omi, Chikayuki Urashima, Taro Ishikawa
Life of this patent
Estimating the term…
Abstract
The apparatus for boring a web of a section. The apparatus is provided with a boring device which is opposed perpendicular to the web of a clamped section and arm plates for supporting the boring device. The apparatus further has a clamping mechanism for clamping the section from each side thereof along the direction substantially parallel to the rotational axis of the boring device.
Claims12
An apparatus for boring a web of a clamped workpiece comprising:
- a boring device having a rotational axis oriented perpendicular to the web;
- a frame;
- a table movable relative to the frame and supporting the boring device;
- a jig attached to the frame and abutting the workpiece to position the boring device relative to the workpiece;
- an urging mechanism attached to the frame and applying a pressure near the rotational axis of the boring device to urge the workpiece against the jig and the boring device;
- wherein the boring device selectively advances towards and retracts from the web of the clamped workpiece in the direction parallel to the rotational axis of the boring device.
3 more elements
An apparatus for boring a web of a clamped workpiece comprising:
- a boring device having a rotational axis oriented perpendicular to the web;
- a frame comprising a guide member extending parallel to the rotational axis of the boring device and a table, with the boring device attached to the table;
- a jig attached to the frame and abutting a first side of the workpiece to position the boring device against the workpiece;
- and
- an urging mechanism attached to the frame and applying a pressure to a second side of the workpiece opposite to the first side to urge the workpiece against the jig and the boring device, wherein
- the boring device selectively advances towards and retracts from the web in a direction parallel to the rotational axis of the boring device, and
- the urging mechanism and the table are provided with hand grips adapted for lifting the apparatus.
4 more elements
An apparatus for boring a web of a clamped workpiece comprising:
- a boring device having a rotational axis oriented perpendicular to the web;
- a frame comprising a guide member extending parallel to the rotational axis of the boring device and a table reciprocally supported on the guide member, with the boring device attached to the table;
- a jig attached to the frame and abutting a first side of the workpiece to position the boring device against the workpiece;
- and
- an urging mechanism attached to the frame and applying a pressure to a second side of the workpiece opposite to the first side to urge the workpiece against the jig and the boring device,
- wherein the boring device selectively advances towards and retracts from the web in a direction parallel to the rotational axis of the boring device.
3 more elements
Dependencies are inferred from the claim text.