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发表于 2015-7-29 09:29:46
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machined by threaded7 O; h. S) q7 g" g
螺纹加工方式
& T y, n+ C7 j/ }value prior to threading3 P, G- I% r" |+ _0 ]: |
攻螺纹之前的尺寸( z1 Y, k4 K9 g \
unless otherwise specified all dimensions are in inches and
$ O! x2 g0 d: o8 k6 c3 f除了特殊要求外,全部尺寸为英寸单位
# ?( p5 K9 V# U, \! S4 V' v2 _1.overall length is minimum and longer needed to meet customer requirements are always allowed wothout
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1 u2 g/ C2 S4 e* Q5 F, R4 b6 Oengingeering approval* s9 R3 c, d* r( Z
总体长度尺寸为最小,若按照客户要求增长是被允许的,也不需要工程师批准
3 T. p. [- X* F5 d1 g2.machined surfaces 250 rms max,thd surfaces 125 rms max 1 s+ z1 ~8 q+ h
机加工表面粗糙度为250 rms(Ra6.3),螺纹表面粗糙度125rms(Ra 3.2)
. v( i' P4 L8 i3.inside raoius 0.03-0.06 in.8 z& u, F1 f a* }+ D- k- C" z
内部半径为0.8-1.5,1.5为最大
" `% p) Q: W, D( o4.corner breaks 0.015X45 in. `! s9 `% L" _* Z* P
棱边倒角0.4X45
; w% E& s: K7 t) |5.concentricity between 2 mach.surf.within 0.015 t.i.r
' J3 x2 E2 E, @# o 两机器的同心度误差量在0.4内
% W7 @$ p0 s+ l5 D9 \6.normality,squareness,parallelism of machined surfaces .005per inch to a max.of.03 for a single surface0 S* X* w% J( L" w' _3 C' N
一般的,机加工表面的垂直度和平行度.005/1 ,对单个表面.030/1 MAX2 ]9 [' d* B) s6 a% \8 Z
7.all thread entry&exit angles to be 25-45 off of thread axis
) C( I: U& M0 n3 v# t8 @- r# N( T/ M 所有螺纹的起始和脱离角都是与螺纹中心轴夹角范围为25-45 deg
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