Spiral Bevel Gear
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Transcript of Spiral Bevel Gear
7/24/2019 Spiral Bevel Gear
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GEAR
Presented By:Satheesh Kumar and Srinivas Approvedb :
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POWER TRANSMISSIONBelt Drives
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Types of Bevel gears:
StraightBevel Gear
SpiralBevel Gear
erolBevel Gear
!ypoidBevel Gear
"iterBevel Gear
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Design Pro#ed$re:
Preli%inary design
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E$ro#opter E& ''!eli#opter:
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Te#hni#al Spe#i(#ations:
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•
Esti%ated Load) P : *++, -.
• Speed of the pinion) np : /0*0 rp%
1ref 2
• Tor3$e) : 4//567*+ 89% 1ref
2
• Gear Ratio) mG : '67/ 1 n p ; ng <
/0*0;'/7 2 So$r#e: E$ro#opter E&'' Te#hni#al Data
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Ass$%ptions:
• Shaft Angle : 07o other
• Press$re Angle : '7o other =ref >
•
Spiral Angle : 4o
other =ref >• "aterial : &ase hardened Steel
other
•
!and of Spiral : Left hand other =ref >
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• Step 1: Estimated Pinion Sie:
– Pinion pit#h dia%eter) d 9 pittingresistan#e =fro% (g *>
– Pinion pit#h dia%eter) d 9 bendingstrength =fro% (g '>
?ig$re *
?ig$re 'd <
*,6*%
%
d !"#$."
mm8@TE : Pinion Tor3$e < 4//567*+8% Gear ratio < '67/:*So$r#e:
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• Step ': 8$%ber of Teeth in Pinion) n
< '' =fro% (g 4>
8@TE : Pinion Pit#h Dia%eter < '746'%% Gear ratio < '67/:*
?ig$re 4
So$r#e:
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• ?a#e .idth) F < ,5 %% =fro% (g />
8@TE : Pinion Pit#h Dia%eter < '746'%% Gear ratio < '67/:*
?ig$re /
So$r#e:
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• Dia%etral pit#h :
% % t
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%ear %eometr&
ItemS&m
Pinionunits
S&m
'othPinion
and%ear
unitsS&m
%earunits
Pit#h Dia%eter d *4 %%
D /0 %%Pit#h angle C
*0647,/0/,
deg +76,04
7/deg
@$ter #onedistan#e
Ao
''067,+'
%%
"ean #onedistan#e
A%
*0/67,+'
%%
Depth fa#tor * ' 9"ean .oring
Depthh
*'6/0,*7'5
%%
&learan#e fa#tor ' 76*' 9
&learan#e #*6,'7*
5+5%%
"ean .holeDepth h%
*/675*,07+ %%
E3$ivalent 07Fratio
%07
'60',44'/
deg
"eanaddend$%
fa#tor
#* 76'// 9
"ean #ir#$larpit#h p% '46074''5+ %%
Ass$%ptions
=ref>
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Assumptions
S&mS&m
(a)ue
units
*omments
Pinion teeth n *+ 9Gear teeth 8 * 9
%od$le %et 0 %%
Shaft angle 07 deg
?a#e idth ? +7 %%Spiral angle 4 deg
Depth fa#tor * ' 9See
table /&learan#e
fa#tor' 76*' 9 See +6
Addend$%fa#tor #* 76'// 9 Seetable S$% of
dedend$%angles
H '6*,4See
table ,
pinion
dedend$%angle HP 76075
See
table +
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Referen#e i%ages:
General no%en#lat$reGear angles&atia eJa%ple
Aero appli#ation8or%al plane
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T!A8- M@N
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Points raised in the previo$s
%eeting
• Poer Trans%ission fro% the tinshafts