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Download PDF - Gear Technology magazine

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EDITOIUAI. STAFF<br />

PUBUSHER. &:<br />

EDITOR.IN.onEF<br />

Michael Goldstein<br />

ASSOOATE PUBUSHER &:<br />

MANAGING EDITOR<br />

Peg Short<br />

PRODUCTIONtADVERTISING,<br />

Pabicia Flam<br />

ASSISTANT EDITOR<br />

Nancy Bartels<br />

EDITORIAL SErRETARY<br />

Pamela Nolan<br />

FREELANCE ARTIST<br />

Catherine Murphy<br />

RANDALL PVBUSBING<br />

PRESIDENT<br />

Michael Goldstein<br />

VICE PRESIDENT<br />

Richard Gol.dstein<br />

GENERAL MANAGER<br />

Peg Short<br />

ART CONSUlTANT<br />

Marsha Goldstein<br />

SI'A.FP<br />

CONTENTS<br />

---- ----<br />

USE OF BOUNl)ARY ELEMENTS FOR DETERMINATION<br />

.oF' THE GEOMETRY FACTOR<br />

Sandeep M. Vijayakar<br />

Donald R. Houser<br />

DESCRIBING NON-STANDARD GEAR~<br />

AN ALTERNATIVE TO THE RACK StDFT 'COEFFIClENT<br />

Don McVittie<br />

PAGE NO.<br />

RANDALL PUBUSHING<br />

1401 Lunt Avenue<br />

P.O. Box 1426<br />

Elk Grove, [L f)()OO7<br />

(312)437-6604<br />

KHV .PI.ANETARY GEARING-PART<br />

David Yu<br />

Df:PARl'MENTS<br />

II<br />

28<br />

EDITORIAL<br />

TECHNICAl. CAJ)ENDAR 37<br />

BACK TO BASICS ••• RELATIONSHIP OF MEASURED' GEAR.<br />

NOISE TO MEASURED ,GEAR TRANSMISSION ERRORS<br />

Robert E. Smith<br />

38<br />

The Advanced <strong>Technology</strong><br />

of<br />

Leonardo Va V"md<br />

.1452·1519<br />

COVER<br />

Like a1J engjneers. Leonardo had his<br />

failures as weJJ as his soccesses. The il·<br />

lustration 011this issue:S cover sholl5 a fen..<br />

tal:ive solutioll to the problem of equaliz.<br />

ing the force of the dock spring in a OlliekeetJiI1g<br />

device. In the sketch Leonarrio expeJiments<br />

with the idea ,of placing a m1ute<br />

gear all the spring barrel and in mesh with<br />

a sliding pinion' guided by the edge of !he<br />

volute. The design problem here is thai the<br />

straight guide 011 the side of the pinion<br />

would interfere on the inside cun-e of !he<br />

mlute. This interference wouId.inae:tse as<br />

,the center of the ¥olute was approached.<br />

CLASSmED<br />

J.anuary/February, 1988 Vol. 5,. No. 1

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