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发表于 2015-7-29 09:29:46
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machined by threaded
7 s; S0 D3 y3 X3 y5 [4 Y ?8 s- Z( D螺纹加工方式
, }9 R% b8 \4 G% b; k4 dvalue prior to threading& H- C( ]4 z. K
攻螺纹之前的尺寸
, v7 F3 o5 u- L- l: eunless otherwise specified all dimensions are in inches and
9 p- A6 ^( z: g2 W. B, Q# z* C5 u除了特殊要求外,全部尺寸为英寸单位3 r% _, R3 M9 t. G. ^
1.overall length is minimum and longer needed to meet customer requirements are always allowed wothout
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* Q8 r5 v# C: V$ {) U5 P Dengingeering approval/ T% p0 ?% J# x, j' m
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. ^ ^; i$ G1 \. ?3 A0 B6 Y
2.machined surfaces 250 rms max,thd surfaces 125 rms max # F2 E* l- ?% ~( f; A8 d
机加工表面粗糙度为250 rms(Ra6.3),螺纹表面粗糙度125rms(Ra 3.2)
+ c' }6 ~6 T! p# B3.inside raoius 0.03-0.06 in.2 b- }* e$ }4 y, O2 c
内部半径为0.8-1.5,1.5为最大8 Y3 G! F; _- A# ~. h6 W& v3 i
4.corner breaks 0.015X45 in.
/ V0 B1 p' Z; Q1 G 棱边倒角0.4X45
+ \& @) B( Z8 K; m, d0 h6 f5.concentricity between 2 mach.surf.within 0.015 t.i.r
+ N4 b. ]7 z) f3 ? 两机器的同心度误差量在0.4内7 m7 \& h0 S& i0 w2 A2 p6 \- U
6.normality,squareness,parallelism of machined surfaces .005per inch to a max.of.03 for a single surface, y% `9 [' \1 a( N: j1 }! V
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 MAX! L3 t# g; c8 U# N' \8 Z
7.all thread entry&exit angles to be 25-45 off of thread axis
/ W$ D: ~) F) \ }! g: 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+ y) ~+ S" y7 I. w' X4 `) x
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