CHƯƠNG 7 THIẾT KẾ QUẦN ÂU NAM NỮ

.CHLlaNG 7
THIET ICE QUAN

•

THIET KE QUAN

Au

Au NAM NO'

NAM 1 LY L~T

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Hinh 7.1

93


- Quan

c~p

rai, tui d9c cheo, etta quan khoa keo.

- C6 1 tIii wi sau (h. 7.1).

II - s6 DO MAU (em)
I. Dai quin (Dq)

2. Yang

b~ng

: 95
: 72

(Vb)

3. Yang rn6ng (Vrn)

: 88

4. Yang ang (V6)

: 40

5. Cit d¢ng m6ng (CDm) : 7 (6 -;- 8)

CDt = 2
CDs =1.5

III - TlEU CHUAN VAI

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Kh6 vai 150em : 1l0em

IV - PHUONG pHAp THIJh KE
M6i quan h¢ gifra than tnrac va thAn sau dugc th€ hi¢n

94

a h'inh 7.2


VW4 + chiet(3)

A-5~

A;2SA'2

8

1"4

A

TA-,

,
Pi' ,

Iii! 'iiI

It

Vbl4 + ly(3,5)

T'\

i3x;

B9
B10

-

d
VrnI 10+1

B6
B5

v

E

T,

B8

Vm/4+CDs

V mliO-1

•

'"

8,

B,

N

;,

B4

B2 3, 5

B,

Vm/4+CEJ\

B3

>

B'

,

•m

B
~

1-

•
~

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C5

Xs

C4

X4
V6I2+2

C C +2

C6

X,

C, C' 2

X

·C,

X,

C C

X3 X

VO/2-2

Hinh 7.2 - Mf/i quem hf giii'a than trube WI than sau

95


A -

THAN TRlIOC (h. 7.3)

Ke duemg d1!Dg dQc quiln each
bien voi 1cm. Tren dubng d6 la
xac d!nh cae do<;tn :

Vb! 4+~,5)
I 3

A

A

12 A'?
A",~T,

TA
T,

1. Dili qulin (AX)
AX = 56 do Dq = 95
2. H~ cira quan (AB)
AB = V m + 2 (0 + 2) = 24
4

3. f)j~m ngang mong (BB')
BB'=

4.

H~

A

~;~
'"

j

Tj

1f4

•

~

>
B'
~
<

Vm/4+CDt

B, 3. S B j

N

B

B3

~

AB

""4

•
~

=6

g6i (AC)

AC =

!.?r + 5 = 52,5

,

Tu cae di~m xac congnghemay.net
dinh, ke cae C, C'
duemg vuOng g6c v6icongnghemay.net
duemg AX.

Cj

C 3C

5. R(>ng IMn I~i cira quan (BB I)

BBI = Vm + CDt = 24
4
,

6. Gia cira quan (BIBo)

BIB2 = 3,5 (c6 dinh)
7. Chia Iy chlnh (BB3 )

BB3 = BB2 = 13,75
.

4

x

Ke Iy chfnh qua B3 va song song
dubng dvng dqc quan, d.t cae
dubng

ke

ngang lu tren xu6ng

du6i t1;li C
96

Xj

&

V6I2-2

Hinh 7.3 - Th{in

tn({rc

X


8. Ve cita qu~n

- Til BI ke vuOng g6c ve phia cap

t~o

A" B4

- Giam vat cira quffn A,A', ; 1,5 (1 -;- 2)
- Ve eua qu~n qua cae di~m A' 2, B4 • B2

- Ban moi to 4cm, dai qua duemg .ngang mong 1em.
9. R(lng cap (A' ,A 3) : A' ,A3 ;

~b -;- Iy (3,5) ; 21,5

10. Giom guc cita qui\n (A' ,A" ,) : A' ,A", ; 1
V~ch

dui'mg chan c<:lP noi A 3 A"2'

11. R(lng 6ng (XIX,; X IX3) : XIX,;

YO _ 1 - 9

4

-

12. Vi' dUOng giang qu~n

- Ke noi B,X, d.t ngang goi tai

C:"

- Giiun goi C, C',; I
- Ve giang qu;ln cong dell qua d.c diem B2,C'2'X2.
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13. Ve duimg dQc qu~n

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- Giiun goi C I C3 ; C I C',
- YO dge quiln eong deu qua cae diem A" B:, C" X 3 ,
14. Ke
-

mi~ng

D~

tui

eheeh mi¢ng tui (A,T) ; 4

- R¢ng mi¢ng tili (TTl); 17
- Diem eh~n mi¢ng tui (TT,) ; 1,5

- Di~m ch;'j.n mi~ng tdi T 1 nam tr~n duemg dqc qw'in.
15. Ke Iy

- TIr A 1 hlY

vt phia eua qUaD

Iem, ve ccng deu xu6ng duemg h;:t

eira quan.

- Liiy khOling x€p Iy 3,5em , ke eheo xuong dui'mg ngang mOngo
7· GTTKQA·A

97


B - THAN SAU (h. 7.4)
1. Sang dau cae dUOng ke
ngang thea than tmoe, g6m :
- Chan

e~p

I...

Vbl4 + chiet(3)

Ar,

(A)

A,

8

"\

A-5

lA, 1\ :; ::if

- Ngang mong (B')

"/ Y13"

- Ngang dung (B)

8,

- Ngang g6i (C)
B,

- Ngang gau (X)
2. Ke dUOng Iy ehinh than sau
vu6ng g6c v6'i cae dttCmg

ke

ngang, cAt cae dltCmg k6
ngang t~i cae di~m A 4 • Bs.
C4 , X 4 ·

B9

B, 0

l

Vm/4+CEls

B,

~B,
Vml10-1

VmI 10+1

B5

-

3. DuOng dung m6ng
- Phfa tren

t~i

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duemg
chan
C5

C,

C C' +2

C,

cap (A4A,) :
A4A, ~ Vb - 0,5 ~ 3,1

.

20

- Phfa du6i t~i duemg h~ ella

,

qu~n (B,B6) :

Vm

B,B6 ~ 10 - I

~

7,8

N6i A6B6 t~a dUOng dung
rn6ng than sau, cat ca.c dubng
ngang m6ng

t~i

B,.
X5

4. Dong cap (A,A6)
A,A6 ~ 1,5

98

X,

X,

Vol2+2

Hinh 7.4 - Thein

.I'WI

7- GTTKQA - B .


5. R\ing qp (A6A7)

A6A7 =

~b

+ chiet (3)

= 21

6. Rong ngang mong (B7B,)
B7 B,

= Vm
4 + CDs = 23,5

7. RQng 6ng (X4Xs = X 4X6 )
X 4XS = X\X 2 + 2 = 11
8. RQng ngang dung (B6B9)
B6~

= Vm
10

+ 1 = 9.8

H~

thilp dung than sau B9B\U = 1, ke song song v6i dl1img ha
eua quAn.

9. Vo duiing vong dung

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Vi! yang dung tu Ao thing xu6ng B, va cang Mu

tm B\U.

10. VO duimg giang quan

- Uy C4 C, = C\C'2 + 2
- Ve giang qulin cang Mu qua cae diem BIO, C" Xs.
11. VO duiing dQc qulin

- Uy C4 C6 = C4 C,
- Ve d9c qulin cang

Mu qua cac di~m A7 , Eg, C6 , X 6 .

12. VO chiet
A
2

- Duimg truc chiet A7 S = A6 7 = 10,5

.
- Blm to chiet = 3

- Chi6u dai chiet SSt = 10
- Ke chiet thea hlnh 7.4.
99


13. Tui sau
-

Mi~ng

- RQng

tui song song va each chan C;;tp 6,5cm

mi~ng

ttii = 13 (12.;- 14)

- TUi ve cAn d6i voi chiet

- Blm to

mi~ng

tui cai :::; 1.

C - CHI TIET PHI,)

1.

C~p qu~n

(h. 7.5)

eM thee chieu doc viti :
- Chieu d"i

c~p (1/2) = ~b + 10

- Bim to qp = 4.

1----------

Vb + 10

2
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Hl'nh 7.5 - Cl!P qllan
3

2. lIap lui

d~c

cheo

Dl!a VaG thAn quan tru6"c, cAt thee
hlnh 7.6.

Hlnh 7.6 - Dap oli dQc cheo

100


3. Coi

va dap lui sau (h. 7.7)

Kfeh thuae 6 x 16 (eM dge sqi)
16

"'"

I

-...,

Hinh 7.7 - Cui va diip lui sau

4. flap moi (h. 7.8)
- Chieu dai tir chan c~p qua dl1Cmg ngang m6ng 2cm
- Ban to : dau tfen 8, dilu duai 5.
8

I

I
I
I
I
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0
OJ

5

Hinh 7.8 - Dap moi

5. Than lui (tui dge vii ffii sau)
Ct.t theo hlnh 7.9.

17

---L--'._._._._._
Hinh 7.9 - Than lui (lui d9C va tui sau)

101