ǰλ: ҳ > >

*̼ͳü

ʱ:

? ? ? ? ? ? ? ?

8.1 ƻע 8.2 *̼ 8.3 8.4 8.5 8.6 8.7 С

ӳ

8.1

ƻע
һ *ͼ Ρ ȣԲ ˶ õһԲ ơ

һƵγɡṹҪ Ƶγ

A1






A



ϵ*ơ ǻڱϵ*ơ

ƵĽṹ ĩ
ǣԲ׶棩

*

Բ棩

β˵ Ƶļӹ










β
β ˵

˵
˵

˵ ˳

ʼ˵



ƵҪ
Ƶ ͨߵϣ ״

õУ


ƵĴ󾶡Со 󾶣е ԲֱDd С׻е Բֱ D1d1

С





Ƶо һԲֱԲĸͨ Ϲۺ͹ȵĵط
Dd






СD1d1

оD2d2

Ƶn
һγɵ *ƣ Ⱦֲ γɵ* ơ



˫

ݾ͵
о϶Ӧ ֮PΪݾࡣ ͬһо϶ Ӧ֮PhΪ̡
ݾ =
ݾ

ƣP=Ph

ƣP=Ph/n

Ƶ



()

ע⣺ֻҪȫͬڡ Ʋһ

õļƵż;
ͼ ;

M ϸ G

ͨ

õ ϸСľܻ򱡱 ˮܡ͹ܡܵ ڹϣڹ· ӡ





Tr

ڸֻ˿ܣ á
ֻܴݵĶ

B

ƵĹ涨 ôʵ߱ʾ (ƵĴߣ ƵС) ϸʵ߱ʾ (ƵСߣ ƵĴ) ͶӰΪԲͼϣʾ׵ϸʵ ԲֻԼ3/4Ȧ ֹôʵ߱ʾ ﲻƻƣͼ ͼϵ߶뻭ʵߡ ﵱҪʾβʱβֵ ߳30㡣

ƻ
߻ʵ Բ

С߻ϸʵ ֹ һ ʵ С0.85d

СԲԼ3/4Ȧ

ӻ
A
С AA

A ֹ߻һС

߻

ƻ
߻ϸʵ

Բ

С߻ʵ A

ֹ ԲԼ3/4Ȧ AA

A ߻С ʵλ

ͨƿ׵Ļ:



׳ĵط

˿

118

120

0.5D

ƾֲṹĻע

C2 C2

C2

˵
b

β
߳30

β ֻҪ ʱŻ ע

͵ıʾ
غϻ ƳֲŴ


5:1


Ļ
ʱֻཻ ߡ

ӵĻ
A AA

ʻ

A ڡ߷෴ Ϊʲô

ͼҪ㣺 ߺʹ߶룻СߺС 롣 ϲְƻಿְ Ĺ涨

ͼ裺

ȷƵĶλ ƼಿͶӰ

ġƵıע

עĻʽ
ֱ (Pݾ) ϳȴ
оͶ L ̣S еȣN

 (Pݾ) Ϊ ݾ Ʋעݾࡣ ƲñעʱעLH Ӧ˳עоš

ϳΪеʱNʡԡ

עʾ
1 M202LH5g6gS
ϳ о

ͨ d20 ݾP2 (ϸ)

2

Tr4014(P7)7HL
ϳ
о

D40 14ݾP72

ע
M202

M20-7H


G1


ߴ Ӧ ס δ?



ע G ǹ Ĵ󾶣 ijߴ š

1

ߴӦ Ӵ

8.2



õ*̼У˨ݶ ĸ͵ȦȡDZ׼ͨ ֻü򻯻ǵװͼͬʱ ǵĹ涨ǡ ǷGBйع涨

ĸ 涨ǣ
ĸ GB/T 6170 M12
ƹ

򻯻
0.8d
2d

У d=ƴ

ͷ˨
涨ǣ ˨GB/T 5780 M1280
0.1d45

򻯻
0.7d
2d ƾ l

˨
d

Ȧ
涨ǣ ȦGB/T 97.1 12
ָM12 ˨ݶ

򻯻
0.15d

2.2d

1.1d

ݶ
涨ǣ ݶGB/T 65 M12l

Բ ͷݶ
1.5d 0.2d

0.1d45

򻯻

0.3d 0.6d
l

2d

d

*̼װͼĻ ˨װͼļ򻯻
0.3d



ӼĿ׾=1.1d ߷෴ ˨Ȧĸʻ ˨ЧȰʽ l=t1+t2+0.15d(Ȧ) +0.8d(ĸ)+0.3d ȡ׼ֵ

t1

t2

l

ͼ裺

ȻͼϷ

ݶװͼļ򻯻

t
0.5d bm l

ݶȣ l=bm+t bm: ֣ bm=d : bm=1.25d1.5d : bm=2d

ƻ

ļִ󻭷

ֹӦ ʲôλã

ݶĩӦ ʲôλã

Сδ

ںδ ӦΪ? б?

֡ϸ

߻ ?λ

װͼı

l

bm

t

: l= t +0.15d+0.8d+0.3d

bmͬݶ, ɱӼ Ͼ

ݶװͼı
ݶ׶ˡ ˡ*֡
׶˽ݶ ˲׶涥 С׶λ á ˽ݶ ö˲СԲ ϵС׻򻷲 λ̶á *˽ݶ * Ħλá
0.2d d 0.4d 2.5:1 0.25d 2.5:1

8.3



һĹá༰
Ĺ üϵĴ(֡Ƥ ֵ)һԴŤء

Ƥ



ͨ*

Բ

ͷШ

ı : 16100 GB1096-79 ʾԲͷͨ*(A) =16mm =100mm
16

100

ӵĻ
*ӵĻ
ʻ





ԲӵĻ

ͷШӵĻ

ϼۻߴע
L b

ע: t bۿ btLɰᾶd ӱ׼в

d-t

d

ġϼۻߴע
b

ע:

t1 ϼ b ۿ t1bɰ׾Dӱ׼в

D+t1

8.4



һĹá༰
Ĺ Ҫ֮ĶλҲ ֮ӣֻܴݲŤء
Բ Բ׶

ı ֱ10mm50mmBԲ ǣ GB119-86 B1050

ӵĻ
Բ
Բ

Բ׶
1 Բ׶





2

8.5





˶Ͷ ıתת Բ *Ĵ Բ׶ ཻĴ Ĵ ϸ

Բ

Բ׶

ϸ

һԲ
Բֵָ
ݾP
ݶha ݸhf

2.ԲֵĻ ԲֵĻ ͼҪ㣺 ݶԲʵߡ ݸԲ ֶԲ㻮ߡ ݸԲͼ лʵߣ ͼлϸʵ ߻ʡԲ ڷԲͶӰ ͼֳݲ ߡ

ݶԲ

ֶԲ

ԲϵĻ ͼҪ㣺
ڷԲͶӰͼ Уֽغϣ 㻮ߡݸ߻ ʵߡݶ߻ ΪһֳΪɼ ʵߣһֳ סߡ
ͶӰΪԲͼУ ֽԲУݶ ԲʵߣݸԲ ϸʵ߻ʡԲ

ע׼ֵĽԲ=ֶԲ

ֺͳϵĻ
ֱ޴ʱݶԲݸԲֶ ԲͳֱߣֳΪ ϵĻϻ ͬ

8.6



Ȧ Ȧ

һеĽṹ༰
ṹ ȦȦ ͱּɡ



ּ ܵغɷΪ СҪܾ СҪ ͬʱܾ



ţ ŵĹɣ
˳ǰôššô ɡ


űʾеĻ͡ṹͳ 磬дŵĻ ʹšߴϵд ھŹɡ ͨ4 λֱʾ Ϊ һλʹš±ʾ




0 1 2 3 4 5 6 7 8 N U QJ

˫нǽӴ ĹкĹ Բ׶ ˫  ǽӴ Բ Բ ĵӴ

ڶλdzߴϵдš ߴϵָͬһھовͬ ⾶Ϳȣвͬij ұߵλھš ھߴ20-480mmΧʱ ھߴ=ھ?5 磺д 6204 6ʹţУ 2ߴϵУ02š 04ھţھߴ=04?5=20mm

еĻ




dDB дڻͼǰ ׼ȷ

A/2

DZ׼ װͼͨü ( d (ھ) Ҫ D (⾶) B ()

м
B A/2 D 60 d B/2

A

8.7
һɵú





ã ڲеǼ𡢸λн ʹܵȡ ࣺ


ѹ Ťת



Բѹ
ɸֵƼߴϵ d:˿ֱ D2:⾶ D1:ھ D:о D=D2-d t:ɽھ

ЧȦn: ֽھ μӹȦ ( ɸնʱȦ ֧Ȧn2: ɶ˲ ֧л̶Ȧ Ȧn1: ЧȦ֧ Ȧ֮͡

n1=n+n2
ɸ߶H0:

H0=nt+(n2-0.5)d

ɵĻ
ɵĻ
*ߵͶӰϣɸȦ߻ ֱߡ Ҫע֡ Ȧϵĵɣм ȦʡԲͨ оߵĵ㻭 ﵯ˵֧Ȧ ٣ͼʽ

ͼ:
DH0Ρ ֧ȦֵԲ ͰԲ ֱ=˿ֱd

ЧȦֵԲ
ӦԲ Ĺߡ
t

ߡ

D

t/2

װͼеɵĻ
ɸȦȡʡԻ 汻ס ṹһ㲻ɼ ֻɸ ˿Ķ ߴ

˿ֱ2mmĶ ˿ֱ1mmʱ Ϳڱʾ ɲʾ⻭

? С ?
һƵĹ涨УҪץסߡ
ôʵ߱ʾ (ŵֱ) ϸʵ߱ʾ (ŵֱ) ֹôʵ߱ʾ עͼߵĻ

ƱעĿģҪǰƵͺ ֳߴҪӴ ˨ݶĸȦDZ׼ װͼļ򻯻ע Ƚǵͬ ݡ ġƼӼı׼ֲᡣ

塢ճ֡ӡӡ 뵯ɵĻ ıǣдŵ塣 ߡѧּγߴļ㷽




ӣ