Stanley N Mills

US Patent:

20080267725, Oct 30, 2008

Filed:

Apr 30, 2007

Appl. No.:

11/741774

Inventors:

Stanley Luke Mills - Lawrenceville GA, US

International Classification:

B23D 77/00

US Classification:

4082035

Abstract:

Although useful in many industrial applications for wood, plastic or non-ferrous metals, this original form of this concept is tailored to the wood I-joist industry. One of the benefits of using wooden I-joist construction versus conventional sawn lumber joists is the ability of cutting holes for duct work and other mechanicals to pass through the system. For this to occur in an industrial environment extreme requirements must be met. The cutting rate for a production machine of this type must be unusually fast for hole saw operations. The size of hole cut is necessarily quite large. Combined with an extreme cutting rate this produces unusually large torque and fatigue requirements. Because manual extraction of the cut material would be cumbersome and consume excessive time, a means of automatic ejection of the “divot” is required. With the varying depth and width of beams to be processed comes the need for simple, quick and accurate adjustment to the machine and multiple or variable cutting diameters.