Rotary knives shear machine
OwnerFerruccio Sclippainventor
Life of this patent
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Abstract
Improvements relating to shear machines to cut advancing bars and particularly a rotary knives dividing shears cutting device, wherein one improvement relates to the conversion of a conventional rotary knives shear machine to a planetary rotary knives shear machine, working at a multiple ratio high speed, the other improvement provides planetary rotary knives working at a fractional ratio in order to keep the rotating knives always directed in the same shear direction.
Claims6
A shear machine for cutting a bar including at least one pair of principal parallel shafts, which rotate at the same rate in opposite directions, comprising a principal gear fixedly and coaxially mounted about each of said principal shafts;
- an arm keyed to each of the said principal shafts to rotate therewith;
- a secondary shaft supported on said arm;
- a knife attached to said secondary shaft;
- a secondary gear attached to said secondary shaft and in planetary geared coupling with said principal gear;
- whereby the rotation of the principal shaft and of the respective arm, the secondary gear rotates, about the principal gear and carries said knife with it by means of said secondary shaft, the cutting motion of said knife being along an epicycloidal trajectory.
Dependencies are inferred from the claim text.