US 4,024,780 AGranted

Flying rotary saw

AssigneeAetna-Standard Engineering Company

InventorJerzy F. Patejak

Life of this patent

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Abstract

An improved flying saw of simplified and more economical construction is disclosed which operates smoothly with reduced vibration and which performs in an improved manner at higher operating speeds. The machine has a main crank arm with a rotary saw blade at one end and an adjustable counterweight at the opposite end, a stabilizing crank arm with a counterweight, and a connecting rod causing the arms to rotate in unison. Both arms telescope to permit simultaneous adjustments of arm radius while screw jacks adjust the height of the crank axis relative to the work. The work is supported on a wheel having a special sliding-block eccentric which moves the wheel in a vertical direction to deflect the work into the path of the rotary saw blade. A quickdrop support bracket permits lowering of the wheel and its eccentric away from the path of the work in an emergency situation so that flow from the mill need not be interrupted.

Claims7

Dependent claims

Apparatus for severing successive longitudinal sections from continuously moving elongated work such as pipe, tube, rod and the like comprising

(a) a rotary cutting saw,
(b) a rotary support directly mounting and supporting the load of said cutting saw comprising a main crank and means for rotating said crank about an axis to cause said saw to travel in a circular path,
(c) means for guiding the work in a normal path displaced radially from the axis of rotation of said main crank and near but not intersecting the path of said saw,
(d) means driven in synchronism with said crank for periodically deflecting the work from its said normal path into the path of the saw,
(e) a stabilizing crank mounted to rotate about an axis spaced from and parallel to the axis of said main crank,
(f) a connecting rod having one end pivotally connected to said stabilizing crank and its opposite end rigidly connected to said cutting saw to cause the cutting saw to maintain a predetermined orientation while said cranks rotate in unison,
(g) means for simultaneously adjusting the effective radius of both cranks while the apparatus is operating,
(h) said main crank and said stabilizing crank having adjustable and fixed counterweights respectively, and
(i) the means for adjusting the main crank comprising means for correspondingly adjusting the counterweight therefor.

6 more elements

In an apparatus for severing successive longitudinal sections from continuously moving elongated work having a cutting saw movable in a circular path, means for guiding the work in a normal path spaced a short distance from such circular path, and means for periodically deflecting the work from its normal path into the path of the saw to permit severing of said sections, the improvement which comprises

(a) a main crank arm having a central portion mounted to turn about a first axis,
(b) a stabilizing crank arm parallel to and spaced from said main crank arm and having a central portion mounted to turn about a second axis parallel to and spaced from said first axis,
(c) means mounting said cutting saw directly on the end of said main crank arm,
(d) a connecting rod pivotally connected at one end to one end of said stabilizing crank arm and rigidly connected at its opposite end to said cutting saw,
(e) a counterweight mounted on each of said crank arms at the end thereof remote from said connecting rod,
(f) the counterweight on said stabilizing arm being fixed thereon, and
(g) means for adjusting the counterweight on said main crank arm.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 05/587,605Filed 17 Jun 1975
Granted: 24 May 1977
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

B23D 45/22
Machines with circular saw blades for sawing stock while the latter is travelling otherwise than in the direction of the cut: flying sawing…
Y10T 83/4714
Cutting motion of tool has component in direction of moving work: oscillating work shifter adjacent cutter
Y10T 83/4737
Cutting motion of tool has component in direction of moving work: with tool speed regulator
Y10T 83/4783
Orbital motion of cutting blade: constantly oriented tool with arcuate cutting path