i

:

THÁI NGUYÊN
i Trung tâm H

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Tôi là:

-

khí, khóa 2011-

-

.

Thái Nguyên, ngày 18 tháng 11

i Trung tâm H

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-

ngh



1.3.1. N

.......................................................................................................- 9 ...................................- 12 ..............................................- 12 i Trung tâm H

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...........................................................- 12 ............................................................- 12 .........................................................................................................- 13 Ch

ng 2.
............................................................................................................- 14 .................................................- 14 ..............................................................- 15 ..............................................................................- 16 ........................................................................................- 16 .....................................................................................- 16 ...........................................................................- 17 -

2.3.5

........................................................... - 17..........................................................- 18 -

2.3.6

................................................................................- 20 -

2.3.7

.........................................................................................- 22 -

2.3.8

..............................................................- 23 ....- 24 ....................................................................................................- 24 .......................................................................- 24 -

Ch


C

S

L

V

V

Ra
L

C

Lo

C

a1
a
R

ng lên dao

Ro
R1
N
Fo


Ps
Q
o
T

dao

G
Góc sau
D
P

i Trung tâm H

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.......................................................................................... - 5 Hình 1.2. S

............................. - 5 -

Hình 1.3. S

...................................................... - 6 -

Hình 1.4. S

.........................................................- 11 .................................................................................- 17 .......................- 19 -


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-1-

1. Tính

-

này có

14].

i Trung tâm H

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phay c

2

.

a).

i Trung tâm H

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1.1.
1.1.1. Quá trình hình thành phoi
1.1

oi

[4].
[4].
[4].

i Trung tâm H

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1.1
2a), sau

2
5 (hình 1.2c).

(

)
, góc


= R0 + R1

-

-

y

i Trung tâm H

y

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là

.


Pz = Ncos + F0sin + F0
Py = -Nsin + F0cos

2
0

);

]:
Px = (0,2


v.

v

i Trung tâm H

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v

sau:

theo S

:
x pv

y pv

1.3.
1.3.

n dao [4].

i Trung tâm H

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(Hình 1.4
gia công

Q = Q1 + Q2 + Q3 = Qp + Qd + Qc + Qm
Tro

:
Q1, Q2, Q3

(1);

Qp, Qd, Qc, Qm

. [4]

0

0
0

Khi

i Trung tâm H

C.

C và 4000C. [4]

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2.1.
p kim)

c

gia công khuôn

vùng

8000

0

i Trung tâm H

11000C.

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80% n
40%

nhi

2.2.