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FRICTION SCREW PRESS DRIVE MECHANISM

Click to enlargeClick to enlarge Description

Link 1, the press screw, is connected by turning pair A to the fixed link (press frame) and by screw pair B to press ram 2 which slides in fixed guides p-p. Link 1 has tapered friction wheel d. By means of a mechanism (not shown) link 3 alternately engages tapered friction wheels a and b, rotating about axis x-x, with wheel d. Thus link 1 is rotated first in one direction and then in the other. The alternating rotation of screw 1 is converted into reciprocation of ram 2.
$2242$LS,HP$

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Documents: Lever mechanisms  [Streambook]
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