Gear cutting – milling – or planing – Milling – Including means to infeed rotary cutter toward work
Patent
1992-10-30
1993-10-05
Howell, Daniel W.
Gear cutting, milling, or planing
Milling
Including means to infeed rotary cutter toward work
409137, 409159, B23C 300
Patent
active
052498964
ABSTRACT:
A pit defining a machining cavity is positioned downstream of a loading conveyor. A workpiece such as a foam block to be machined into a lost foam pattern for use in full-mold casting is fixedly mounted on an invertable workpiece mount base that is positioned above the machining cavity. The machining cavity houses a cutting unit for cutting, from below, the foam block supported on the workpiece mount base. Chips produced when the foam block is cut by the cutting unit are discharged by a chip discharger disposed beneath the machining cavity. The machining cavity can be substantially closed by the workpiece mount base or the foam block mounted thereon. There may be employed upstream and downstream machining stations each having the machining cavity, the workpiece mount base, and the cutting unit. The workpiece mount base in the upstream machining station is vertically movable, and the upstream and downstream machining stations are interconnected by transfer units. After one side of the foam block has been cut by the cutting unit in the upstream machining station, the foam block is elevated and then transferred to the downstream machining station in which the opposite side of the foam block is cut by the cutting unit.
REFERENCES:
patent: 3010371 (1961-11-01), Riedel et al.
patent: 3371580 (1968-03-01), Barnes et al.
patent: 4603456 (1986-08-01), Hiroyasu et al.
patent: 5084952 (1992-02-01), Grabow
patent: 5197527 (1993-03-01), Namba et al.
Kamada Teruo
Namba Takaoki
Burt Pamela S.
Carrier Joseph P.
Honda Giken Kogyo Kabushiki Kaisha
Howell Daniel W.
Weiner Irving M.
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