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