Apparatus for shearing multi-walled workpieces

Abstract

In an apparatus for shearing multi-walled workpieces, such as metal framing studs, a base support (16) defines a blade gap therebetween, and a guillotine-like blade is slidably received within the gap for shearing the workpieces. A pair of first supports (20) are each slidably mounted on a respective base support (16, 18). A pair of second supports (22) are also each slidably mounted on the base support, and are spaced apart from and face the first supports to thereby define an adjustable-width channel (28) therebetween. Each of the supports defines a blade-like edge for engaging an elongated, multi-walled workpiece and the first and second support surfaces are each moved into contact with a respective wall of the workpiece. The supports can be oriented relative to one another such that the axis of the channel, and a longitudinal axis of the workpiece received within the channel can be oriented at a desired angle relative to the blade. The guillotine-like blade is then driven downwardly into engagement with the workpiece to shear the workpiece along a line of contact.

Description

field of invention [0001] The present invention relates to apparatus for cutting sheet-like material, and more particularly, to cutting workpieces of different sizes and shapes having at least two walls of sheet-like material, such as metal frame posts and gutters. Background technique [0002] Metal framing posts are used in the construction industry, particularly in commercial construction, to construct the frame and mount siding of slate or other material thereon. While frame struts can be formed in a variety of different shapes and configurations, the common form of struts is constructed of metal and includes a rear wall and two parallel side walls forming a generally U-shaped cross-section. Commercially supplied struts are supplied in standard lengths so that if non-standard lengths are required, the standard struts must be trimmed to the required length (often by the builder). [0003] Typically on the construction site, post trimming is performed using a dicing saw w...

AI Technical Summary

Problems solved by technology

[0005] A disadvantage of this existing shearing machine is that it cannot be used to conveniently cut a variety of different prefabricated pillars, gutters or similar workpieces

Each template typically forms apertures of a fixed shape and size to accommodate a manufacturer's specific type and size of workpiece and can therefore only be used for that type of workpiece

In addition, frame struts and similar workpieces are bent or slightly deformed during transport, which prevents such workpieces from being accommodated in their corresponding formwork

Thus, although such machines can be used to cut various frame posts or similar workpieces through a variety of templates having apertures of different shapes and configurations, not only is this relatively expensive, but any slightly deformed workpiece cannot be accommodated in said templates , cannot be cut by such machines

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