US 4,619,163 AGranted

Automatic mitering apparatus

OwnerIrving J. Browninventor

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Abstract

Precut pieces of wood of like configuration are stacked in a hopper from the lower end of which they are advanced one-by-one by a reciprocable pusher onto a horizontally disposed work station. As soon as a workpiece is positioned on the station it is automatically clamped into place, after which two rotary saws, which are mounted adjacent opposite ends of the station, are reciprocated from retracted to advanced positions, during which movement they cut away portions of the workpiece at opposite ends thereof. As soon as the saws have advanced passed the workpiece, they are retracted slightly away from opposite ends of the workpiece, so that they will not reengage the workpiece when they return to their starting positions. When the saws are retracted the now-cut workpiece is automatically released and then ejected from the work station, after which a cycling relay automatically causes another workpiece to be shifted onto the work station so that the above-noted steps are repeated. The electrical control means for the apparatus causes the cutting cycle to be repeated until the hopper is emptied.

Claims13

Dependent claims

Automatic mitering apparatus for wood blocks and the like, comprising

a frame, means defining a work station on said frame feeding means operable intermittently and automatically to feed workpieces in a first direction and one-by-one onto said station,
clamping means responsive to the movement of a workpiece onto said station automatically to clamp such workpiece intermediate its ends against movement on said station,
a pair of mitering saws mounted to rotate on said frame in a pair of spaced planes located adjacent opposite sides, respectively, of said work station,
means responsive to the clamping of a workpiece on said station for automatically reciprocating of said saws in said planes between retracted and advanced positions along paths disposed to intersect opposite ends, respectively, of said workpiece, thereby to cause the rotating saws during movement to their advanced positions to cut away opposed end portions of said workpiece,
means responsive to the movement of said saws to their retracted positions, and operative independently of said feeding means, for automatically and successively releasing and ejecting said workpieces from said station in a direction transversely of said first direction after it has been cut by said saws,
cycling means operative in response to the ejection of a workpiece from said station automatically to actuate said feeding means to feed the next successive workpiece to said station to be clamped thereon by said clamping means, and
means operative to effect translational shifting movement of said saws slightly towards said opposite sides of said work station before cutting the workpiece thereon, and to effect translational shifting movement of said saws slightly and transversely away from said work station immediately following the cutting said workpiece.

4 more elements

Automatic mitering apparatus, comprising

a frame having thereon a work station,
a hopper mounted on said frame adjacent said work station and disposed to contain a supply of workpieces,
means for feeding said workpiece one-by-one in a first direction from said hopper onto said work station,
means operative in response to the movement of a workpiece onto said station to clamp the last-named workpiece intermediate its ends against movement on the station,
a pair of rotary saws mounted on said frame to rotate in spaced planes located adjacent opposite sides, respectively, of said work station,
means operative automatically in response to the clamping of a workpiece on said station to reciprocate said saws in said planes and along adjacent opposite sides, respectively, of said work station between retracted and advanced positions relative to said work station, and along paths that extend normal to the respective axes of rotation of said saws, and transversely of the workpiece clamped on said station,
means for automatically shifting said saws slightly axially and translationally toward each other and said station prior to movement of the saws to their advanced positions, thereby to cause the saws to engage and cut the workpiece clamped on said work station during the advance of the saws along said paths, and operative to shift said saws axially and translationally away from each other and said work station when the saws reach their advanced positions, thereby to prevent engagement of the saws with said workpiece upon return of the saws to their retracted positions,
means operative independently of said feeding means for automatically ejecting said workpiece from said work station in a direction transverse to said first direction when said saws return to their retracted positions,
cycling means operable after ejection of said workpiece from said station automatically to actuate said feeding means to feed another workpiece onto said station, and
electrical control means for automatically operating said cycling means each time said saws returns to their retracted positions.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 06/629,179Filed 9 Jul 1984
Granted: 28 Oct 1986
Term ends: Not estimatedThe source records don’t support an estimate.

Classification18 codes

B23D 59/005
Measuring or control devices, e.g. for automatic control of work feed pressure on band saw blade: for preventing collision of saw blades with…
B23D 45/024
With the saw blade mounted on a carriage: the saw blade being adjustable according to depth or angle of cut
B23D 45/10
Sawing machines or sawing devices with circular saw blades or with friction saw discs: with a plurality of circular saw blades
B23D 47/042
Of devices for feeding, positioning, clamping, or rotating work: for conveying work to, or discharging work from, the machine