Metal deforming – By plural tool-couples – With means to feed work between plural tool stations
Patent
1979-02-15
1981-06-16
Moon, Charlie T.
Metal deforming
By plural tool-couples
With means to feed work between plural tool stations
72421, B21D 4305
Patent
active
042729815
ABSTRACT:
A workpiece manipulator has a first epicyclic-gear transmission having a ary input and a crank output which moves generally in a planar and rectangular path on rotation of the rotary input through a predetermined angular distance. This path has generally parallel upright sides and generally parallel top and bottom sides interconnecting the upright sides. A drive including another epicyclic-gear train is connected to this rotary input and rotates same at a speed increasing generally from a standstill to a predetermined speed then slowing generally to a standstill again twice for each travel of the output about the rectangular path. These standstills correspond respectively to intermediate positions of the crank output along the upright sides of the path. A workpiece holder is connected through an upright threaded spindle to the crank output for joint displacement of the holder and the crank output during travel of this output along the top and bottom sides of the path and during travel along those portions of the upright sides of the path below the intermediate positions thereon, and for displacement of the holder in a direction generally perpendicular to the plane of the upright sides during travel of the output along the portions of the upright side above the intermediate positions thereon. All displacement rates increase and decrease sinusoidally so that the holder can enter and stop in a pressing station of a forging press, for example, then pick up a workpiece and move to the next station. Thereafter the holder lowers, then stops and releases the workpiece, and finally withdraws.
REFERENCES:
patent: 4012937 (1977-03-01), Imanishi
patent: 4024749 (1977-05-01), Taniguchi
Crosby Gene P.
Maschinenfabrik Hasenclever Gesellschaft mit beschrankter Haftun
Moon Charlie T.
Ross Karl F.
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