Acatrinei.gabriel - Reductor Cu 1 Treapta de Viteza

8/12/2019 Acatrinei.gabriel - Reductor Cu 1 Treapta de Viteza

1/8

Nr.

Crt

Parameter Calculus

1 Input data

1.1 Rotational speed

of the pinion rpm

i

nnn

c

I544

1 ===

1.2 The torque at

the pinion85.74187155.! " ==

n

PMt

mmMiTT trI 45.4"7#8#1 ===

mmTiT IrII 7#.2!44515#."45.4"7#8# ===

1.# The $ear ratio #."== rdat iu

1.4 The imposed

lifetime

hoursLh 1=

1.5 %unctionin$

conditions

The actuator & electric en$ine

The 'or(in$ machine & transportor cu melc

The load t)pe & uniform

1." The loadin$

c)cles

T)pe & pulsator)

1.7 Num*er of

loadin$s per

c)cle for the

pinion and for

the 'heel

1

1

2

1

=

=

1.8 The reference

rac( parameters

#8.

25+

+1

2

=

=

=

=

fn

n

an

n

p

c

h

2 Choosin$ the steels + treatments+ and limit stresses

2.1 Choosin$ the

steels+

treatments and

hardness,s

-teel 4Cr1

Profile hardness 2#5 /

Core hardness

0127!

01218...88

2+1

2+1

MPa

MPar

=

=

2.2 The limit

stresses for

contact and

*endin$

01228

012"7

2+1lim

2+1lim

MPa

MPa

F

H

=

=

# Predimensionin$ calculus

#.1 Teeth num*er

=

=

=+

=+

=

2...12

0#1...75

74.252cos1#."

21cos

1

21

n

w

datn

wMAX

m

a

teethum

az

3e choose 0#2=

3e choose MAXz1 25 teeth

3e choosen

w

m

a1 inte$er

teethzuz dat 5.15725#."12 ===

3e choose =2z 157 teeth


2/8

#.2 The real $ear

ratio

012#.#.#."

11."11

11."74.25

5.157

1

2

==

===

uu

u

z

zu

dat

#.#.

1

The contact

factor calculusMPaZE 8.18!=

#.#.

2

Contact 6one

factor##.22cos4!.2cos4!.2 === HZ

#.#.

#

Coerin$ de$ree

factor

0124.1

845.4.1

11

=

===

a

a

Z

#.#.

4

The inclination

factor!#.2coscos === Z

#.4 The *endin$ calculus factors

#.4.

1

Num*er of teeth

for the

equialent

'heel teethz

z

teethz

z

n

n

2.18!2cos

157

cos

12.#2cos

25

cos

##

22

##

11

===

===

#.4.

2

Profile

displacement

coefficient

2

1

=

=

n

n

x

x

#.4.

#

-hape factor of

the teeth

15.2

5#.2

9

2

1

2+12+11

=

=

=

Fa

Fa

nnfaFa

Y

Y

xzYY

3e choose accordin$ to appendi: ;5 120

#.4.

4

The tension

correction factor

at the *ase of

the teeth85.1

9

"#.1

9

2

222

1

111

=

=

=

=

Sa

nnsaSa

Sa

nnsaSa

Y

xzYY

Y

xzYY

3e choose accordin$ to appendi: ;" 120

#.4.

5

The coera$e

factor#.#.#94.1

72#.2cos

4.1

75.25.cos

75.25.

22

=

=+=+

a

a

Y

#.4.

"

The inclination

factor8#.

12

21

121 =

=

=

Y

#.5 The load correction factors

#.5.

1

3or(in$ re$ime

factor

3e choose accordin$ to appendi: ;7 120


3/8

#.5.

#

>nuniform

distri*ution of

load on 'idth of

toothin$


4/8

#.7.

4

Choosin$ the

distance

*et'een the a:is

mmaaa wFwHw 25.#"#1.27725.#"#ma:9ma:9 ===

3e choose a'#"#mm -T;- "550

4


5/8

5.2 Calculus scheme

and esta*lish of

forces direction


6/8

5.2.

1

Input -haft


7/8

5.2.

2

Butput -haft

" -hafts calculus

".1 Predimensionin$

calculus The input shaft

mmT

dat

82.4#514+#

45.4"7#8#1"1"##

11 =

=

=

MPaat #5=

The output shaft

mmT

dat

85."45514+#

7#.2!445151"1"##

22 =

==

MPaat 55=

-e ale$e d141

d2

"5".2 Choosin$ of the

*earin$ mountin$

for the input and

output shafts

-haft -)m*o

l

d

mm

=

mm

/

mm

Cr Co

Input "2" # "2 1" 1!5 112

Butput "211 55 1 21 4#" 2!


8/8

mmddoutput

mmddinput

II

I

551"51#...799

#"418...#99

===

===

Acatrinei.gabriel - Reductor Cu 1 Treapta de Viteza

Documents

Transcript of Acatrinei.gabriel - Reductor Cu 1 Treapta de Viteza