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LEVER-GEAR MECHANISM OF A GRINDING ATTACHMENT

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Gear 1 rotates about fixed axis B and meshes with gear 2 which rotates about fixed axis C. Eccentric 4 is rigidly attached to gear 1 and is connected by a turning pair to collar a of link 6. Eccentric 5 is rigidly attached to gear 2 and is connected by a turning pair to collar b of link 3 which, in turn, is connected by turning pair D to link 6. If the numbers of teeth of gears 1 and 2 differ by a small amount, a full cycle of motion of the mechanism will equal a number of revolutions that is the least common multiple of the numbers of teeth of the gears. When driving gear 1 rotates, point A of link 3 describes a complex connecting-rod curve that can be applied for the operation of a grinding attachment mounted on this link.
$2560$LrG,FD$

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Documents: Gear mechanisms  [Streambook]
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