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Method and apparatus for manipulating metal workpieces

a metal workpiece and metal technology, applied in the direction of ducting arrangement, lighting and heating apparatus, heating types, etc., can solve the problems of reducing the integrity of sheet material, rendering it less structurally sound, and the subsequent rolling and bending process much more difficult, so as to achieve the effect of reducing cost and facilitating fabrication of hvac duct sections

Pending Publication Date: 2020-04-16
MESTEK MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The method allows for efficient and cost-effective fabrication of HVAC duct sections by preserving the material's integrity, enabling smoother bending and rolling processes and reducing material loss, thus improving the duct fabrication process.

Problems solved by technology

For example, removing quantities of material from the sheet material to form notches, taps, access doors and like features prior to bending into a completed duct section can greatly reduce the integrity of the sheet material, rendering it less structurally sound and making the subsequent rolling and bending processes much more difficult.

Method used

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  • Method and apparatus for manipulating metal workpieces
  • Method and apparatus for manipulating metal workpieces
  • Method and apparatus for manipulating metal workpieces

Examples

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Embodiment Construction

[0021]FIG. 1 illustrates a sheet of material processed by a plasma cutter of the prior art. The sheet of material 10 may take the form of any type of electrically conductive material known in the HVAC industry for manufacturing a ventilation duct such as, for example, steel, aluminum, brass, copper, etc. As is known in the art, when a plasma cutter (not shown) is applied to the sheet of material 10, an electrical channel of superheated, electrically ionized gas is continuously blown through a focused nozzle at high speed toward the surface of the sheet of material 10, melting through the sheet of material 10 by delivering sufficient heat toward its surface, while the head of the plasma cutter moves above the sheet of material. A plasma cutter can therefore be used to create various features in a sheet of material such as sheet metal. As illustrated in FIG. 1, for example, a continuous hole seam 12 can be created by the plasma cutter to form a hole 11 in the material, and / or a contin...

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Abstract

A method of forming a duct section from a web of material includes the steps of forming a series of perforations in a web of material, the series of perforations defining an outline of one of a hole or notch in a finished duct section, forming a male lock bend and a female lock seam in first opposed edges of the web of material, forming flanges in second opposed edges of the web of material, removing the portion of material interior to the series of perforations to form the hole or notch, and bending the web of material to form the finished duct section.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a divisional application of U.S. patent application Ser. No. 15 / 817,428, filed Nov. 20, 2017, which claims the benefit of U.S. Provisional Application Ser. No. 62 / 425,297, filed on Nov. 22, 2016, both of which are hereby incorporated by reference their entirety.FIELD OF THE INVENTION[0002]The present invention relates generally to manipulating metal workpieces and, more particularly, to a method and apparatus for forming features in a sheet of material for subsequent bending into an HVAC duct section.BACKGROUND OF THE INVENTION[0003]A plasma cutter is a cutting tool used in manufacturing industries for cutting electrically conductive materials such as steel, aluminum, brass and copper. Plasma cutters work by creating an electrical channel of superheated, electrically ionized gas (“plasma”) from the plasma cutter, through the material to be cut, thus forming a completed circuit back to the plasma cutter via a grounding ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F24F13/02B23K10/00B21D51/06
CPCB21D51/06F24F13/0245B23K10/00B23K10/003H05H1/34
Inventor KERSKA, STEVEN J.WELTY, JOHN R.COON, TIMOTHY A.
Owner MESTEK MACHINERY
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