PSG Design Data Book Pages Required For Gear Design

PSG Design Data Book Pages Required For Gear Design
This PDF contains all design required procedure for Spur, Helical , Bevel and Worm & worm wheel gear design

1. Symbol

wgepen

Ya
Y

”

GEARS - 8

SPUR, HELICAL AND BEVEL GEARS

Uni
omnia

ER Centre distan, 1 Be rounded off 10 R10 eri fo mn

em Gone distance

~ Gear ratio, > 1, Sundaré Gear ai, Tablet

= Number of teeth, Z, on pinion & Za om whee

mmm standard mode, Tablet*

mm Standard normal module, Table

cm Face width

degres Pressure ange stadados =20*, Other pressure ange in voue 14°30 & 15°

degrees Heli angle, 8° to 25* for Halal gears

25* to 40" for Herringbone gears
Spiral angle, 8° to 35° &, Zero degree for Zerol bevel gears

— Height ctor, £,=1 for Standard gear toth

F =08 for Stub gear tooth

— Radial clearance, 6025 m for standard gears, Other clearances in vogue
= 0157 m; c=0.167 m; 6=02 m & em03 m

= Correction factor or Addendum modifcation coefícient for S, and S
corrected gears

, Table-10. Recommended values, Table-11

= ven Be tablet?

- Era

— Form factor, Table
Form factor based on equivalen! number of teeth on the vital cylinder Z,

2, = gig tr rt be aa

snd Herringbone gears

z A
DA 1 Spiral bevel gears
af. em Torque transite by PINION
kan? Equivale Young Modulos, Tele?

E
Tr cc al cain nace ed Ta al, wen ud a formal

=
O ee

81

Dean DATA TECH

2. SPUR, HELICAL AND BEVEL GEARS (Contó)

Symbol Unie Fons
= road orcas cor, Talla
Dynamie Id factor, Table
Life factor, for cons (ict) ate, Tablet?
iy for beng, Table 2
Sues concentra ator for the let,
Factor of sty in bending, Tale 20
Keen Design Surface sess or contact (rubia, eng) compre u
forthe weer mati tobe modi forthe required le
Agent Design bending ste (esl) forthe weaker mater, 10 be mode
forthe ques ite

BASIC RACK

Table!

31416m

1 =0:45mMox:
Recommended Series of Modales? um. IS: 2535-1963

Prefered Choice?
o

Modules

3 Preference is 10 be given 10 the use of the modules sated a colum 1.
in column 3 should be avoided a far as possible.

sion para na TE!

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3. Peripheral Speed of Gears Table 2

tr Qua Spat of pene mete per wenn
Quai a
= ee ak ETC
Hess Ciel Our
mn ary Tey moi
1889 $ pr A 6 "7
Coarse We 10,12 ‘Above 1 & upto 8 Hs et
But fr Ge me rate à
‘Upto 8 ms pitch line vel
tdo a “Above 8 mis pitch line velocity
Min, Van: Module Backlash
= 0m
CC 3 m
6. de ; E
10 030 ost H a
o ao $ om
6 02 00 bs 2
5 on où Es tis
25 0.08 013 2 018
CO
sunt Ger Ra 4 ru 4
AA QU
EA sap anion
= . a Fer me
mn ; z : ZÉ
E » 5 EN nm
1 a s ; =
2 2 8 be a 18
24 125 a sa 355 20
2 “ ® no.
a M El 8 s E
as 18 m 9 o as
3s
6 =
‘Denon DATA—750 TECH 83

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4. M0 30 Wied Csi pads NO Conse pad

E von]

5. Dolo Sr or Ge Mai m

14. Caldos. Teiment — kg? e Number or Mies
m ous ZOO 8 w wu

‘tine ale are fin?
Min, eine da a or emp emi of tes, etna?
Lin ac un Rent "
FE dus ng Ant

se

6. Formulae Based on: Surface có evmpeeniit) Stents”

Helical and Her

A
é u (E FER as

a iy

FOR CHECKING.

wa) | Sei

|
a]

7. Sure

E
RE

CRETE)

Spiral Ds
cot paa) LEE
mu? 11860 BA) ¿Li my

LECKING

5 de)

141
(M te)

for + D < 45" and cx mr
Heriegbone.

O op

29

te

4
E)

Straight

RAM) _1
97 (Om bay, Soe “OY
Spiral

eqn OT RET LM
PT Sr omy, “|

Pass for external and Minas Jor internal

Denon nara—na TE

SE

8. Gear boxes with siding gears

= DE ==
vot Na gag ee Re
a ee
E keflemt eu kallmmt Ey, kgfiem?: atom
‘Steel 215x100 215x104
we sr ci I er
=
Fo or ction TE um
ea
Type of gear transmission
$ Open type seating 011003
‘Speed reducers (Closed type) pa
ae
o nt à

‘Note: For lightand medium duty b € &
For heayy duty b € LS di

à ‘Recommended Y values

02% 0% 04

050

Table 12

“Type of gear Transmision

rod ps

nd pres

Cron io pe
$ Gears in rid hosing
E Pane) get

Ingmar: Yao blo

3.14

1010 20
upto 45
dio 20

For Nylon gears Ya = 10 10.20

DESIGN DATA™50-TEeH

A i uf

9. a. Housed in roller bearings
Speed Reducers
b. Housed in Journal & Thrust bearings

Design Teig Moment (M

JM kak (40) My nominal twisting moment transmite by
Tniily assume for symmetric scheme
kgkel3 le)
For unsymmetic and overhanging scheme
Kukels (42) Ka dynamic load factor, table 15

the pinion, kaf cm
hp, nominal horsepower transmitted
1, speed of rotation of pinion, rpm

‘EW, nominal power transmitted in kW.

varia"? a

7 Table 14
Load Concentration Factor, k for steel gears of Quai . Shaving HB > 350

Clinical Gears + Bevel Gears

Suc res bi
Gane” ee

3380 for both
the Gears

116 =
ma the pat ont
re) Jes for wheal

16 19 16

15 1

12 as 1 m Average pit

R-os
ion: (E >)

ges e pic eve,
os metio ng

eng: me
e. pun

Desion para TECH

8.15

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10. Table 15

1S quliy _ Spion Shure Spain Be Rell & Sin BO
Ed Con anne ih Im vm ve

lm rm 19 30 80 120 30 180 120" 180

so Sm Sm = 1 12
EX A A

6 y Qu Is 1. IL 12 4

FR ON 1 2 1 1 UN, 12

Be SM LS = Med Mi

BD TT le = Tags

De Ye a =

SI = a Mn.

CI EC

Dein Surface (contact coment) Su [0]
Gor cout depending on We suce

edn Ca HB ky kallem 48). hardness, from table 16,
HB or RC. Béoell or Rockwell C* hardness
LÉ HRC ky. kaflom? 62 plier
lite Factor from table 17
Cootteeats, Cy & Cp Table 16
‘Wheel Hat Surface Cocficnt
Material Treatment Hardness Cyr

Carbon. Steels and Alloy Stes Normalised or HB < 350
ofan Hardened and

AE Tempered
Hg strong Alloy Nickel case HRC=55t063 Gyn 10
arpmium Stele Hardened
Alloy Steel - » Ca=2s0
Carbon & Mangancte Steels D “ Ca=z0
15; C20; CIS Ma Y
Mas

ardened& HROM4O 10 55
‘Alloy Sees, Carbon Sta
CH CAS ana
Surface
° Hardened

Cast Iron, Grade 20,25
Cast Iron, Grade 30, 35

Coy

DESIGN DATA 150 TECH

8.16

11. Base Diane OÙ Etes Meshing Standard Cyldral Gears

Table 26

Saft 1 for Pinon and 2 for Wheel

Normal module
Transverse module
entr distance

Height factor

Bottom clearance

Tooth depth

Puch diameter or
reference diameter

Tip diameter

Root diameter

Number of teeth

Viral number of
teeth

fy (ia special case £, 08, stub tee)

e=025 m 2025 m,
(For sub euh c=03m) (For sub Teeth e=0.3 m,)

h=225 m he225 m,
(For stub we, ha.9 m) (For stub teeth, à

dem Zi diem 2,
IRA
IR) m
lam) ne
dans) 0-2
For heat, Burt 25°

For herringbone, B=25" 10 40°
cos Bue +29
da

2a cos 8
Gy anh

A
ta

82

DESION Dara mo TECH

|
see]

12. Number of teeth on pinio
Number of fs on gear
Virtual number of teeth

Speed me zu,

GEAR Desig;
IN BASED ON LEWIS AND MUCKINGHAM EQUATIONS

a

»

Pitch diameter, reference diameter

(Geve gens),
Face width, em

Cone distance, em

Levis form factor based on P,
Levis form facor base on Py
Velocity factor

oad sires actor, Kafe

Ratio factor

Mean Veli, ms

Pitch line Velociy,. min

Asia force, gh

Dynamic load, gt

Strength of gear 100

"Transmite load, gf

Wear load, kg!

sign bending stress, kffen?
design contac stress,

Modulus of Elric

SPUR GEARS

Pa Diametral A
pe, BoE ao

Pe Che pl, I, cm
Po Axial pitch, cm
Pas Normal dama ich, à
Poe Normal eeu pi, em
m. Mat (
me. Normal ode
me Tree modul
y bona ae
<=. Normal promus ange
8. Helix angle

49-25 or bell pea

25940? for Heros aes
de Retorno cone sl de
Lewis Equation:

x
Fo lo 39m, Edo

2

5

Levis form factor based on P,

y

Y and y can alo be taken from table

om

os

on

= 0150 222 for 20 imoine

0 Ñ
= 015 ~ 938 for 20° nvoluest

a cnt]

SF for Him

m

13. <tr
Sara en whet
= CEM Sv. 52m for
Sey hes
N, an
IS pri wei
m

= GGG oli gar

ne 401
nt Di nd

0164 Va cb + E,
Fe f+ Deiat ree

fore refer table 41

Use Z, instead of Zin the equation for y to
my,

LG, vols are the same as for spur gar]
Buckingham dynamic load
uns [U Y, (cb cost B+) cos 8
Te area]
for € er table 41

ba Qe
as

Dision DATA—P80 TECH

ai for external

Qi formel

Design steel gears for wear and check for
strength

SES

+

+

DE Hrn

mg

neun
a7
> Fay
A]
z
ES
„x

pere
MORE
CELA

> Fy for eso sevice

ss

[Scanned wich CamScanneif

14. BEVEL GEARS

straight bevel gears, €, = SH va
aa

Spit bee paa, = [Stat] ve > sas or
or

(Right angled:

à +B = 90")
due dy and m, refer to the large end

10.
203 Rot py

MN Service factor 110 2
B. Spiral angle

vs Sms

For commercially cut wheels

rpm > 1000

Sri bevel pets, 2, m A 72

CES

Load disribaion factor "a
Both gers straddle mounted 10 LE
‘One gear straddle mounted 1.1 10 1.25

‘Both gears overhanging 125 0 14

For Buckingham’s dynamic load use the equation for spur gear taking V for the largest

‘WORM GEARS

Pitch circle.

‘Tooth strength
Live, Eve
em ee

Lead angle of worm Atari
Helix angle of worm B,=90"—Re

Helix angle of gear : gp 90°—2,
(orm wheel) ®

Baur, and ße

Dyas al Fu (a
cert

Wear Jad Fe De > kw

Host generated, Hy? P
ye (hy x np px amis

Heat dlsipated, Ha
Hand, A Ot ef mit
PRES

52

Form factor Y for 1 +240

a] ro cars

vom om on am

2. Number of starts on worm
Number of teth on wheel

Dy, Pitch diameter of worm

Dy, Pit diameter of gear

Van Pitch line speed of gear

FF, Transmitted loud based on output power, ket

Le Wear factor (able 43)

Ing, Heat transfer corficient

“At. Temperature rise of the lubricant, °C

‘A, Minimum area of the housing, em?

a. Centre distance, em

L, Lead of worm, cm

er Lead angle of worm

Au Lead ange of gear

‘crys Normal pressure angle

Efficiency

BON DATA mo TEEN,

15. Table 40

FORM FACTOR Y IN LEWIS" EQUATION: FD = Fol depths = 2

a CNRS E] Root ap ER
A Do les oe
ETE ee we
o E
tte ee an | soa uw à
5 où ome om | m om om
M on on 0 | wow ote
M Se où 0 | + as 0m ol
Eos os ox | 4 om om oui.
FU om Oo om | % am ous oa
DO m | 5 m a m
DO a a
Be om m | suas a m
Dom | n ow u 06
5 on on owe | # oi aa
5 où où cme | w 06 te .04
200 ow on | © om ou où
Bo me ou | © om om 0%
% om où om | do 0 om on
Hom où où | m om os am
HO ou cana | 0 om am Com
5 où os me | um om 050
rer
Taie a
van ee Dept cs me ii;
Tooth Matet! Gall Fin cass ER
‘een Paced © E
cial gears =
TAs? canon and Canon Me
ca sme] ns ggg ao. 00
end nme 5 00% 00 on
20° Cast iron and Cast iron 5930 e + e 200 e
se dCi ale 7 0m ons oo
Steel ar Y Steel, 11860 e y “40. am” ¡am |
20° Cast iron and Cast iron 6150.¢ 3, 2008. Qu, Que
nn 10 000 om our
SUR set ution we
Minds “1200

Error in action, mm

Don DATA P50 TECH

853

Se

16. ronces & BEARING acacrions (ONTO)
GEAR

WORM PLACED
BELOW Wu
2 ap)
rm)
facto mip) ba] th
Move
haras 2 _ ua) tala)
FORMULAE FOR GEAR FORCES
(an forces refers 10 pee or worm bel) Tele à
Tangent ET Asia force, Pa
4 Pune
E „us Fuß
3 na
i ©) tance co (qq tance ia
I u Se aceon
lan
Perse De.
i Ptos
E Prune
Z 2
fr

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17. SING
LE St)
AGE
CYLINDRICAL GEAR SPEED REDI
CER

8.58.

18. 4 = à

module AR PROPORTIONS

e cire Stance
4, = tp diameter
4 — diameter oF the gear shat

anos

parer of bub = 1.6 4
10m

4 2038 ¡4 = 160

Weiz: DEEE)

D,=4,-10m

tb thickness = 03 b