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machined by threaded& q; R X" a: y3 h' |
螺紋加工方式
% _6 i6 N# x& a, p. ?value prior to threading# |1 L; o5 O+ d- [' H
攻螺紋之前的尺寸8 o5 i# R, ] R& Q; u7 G# z
unless otherwise specified all dimensions are in inches and9 W, T( h, I- t) K$ `3 f
除了特殊要求外,全部尺寸為英寸單位
9 K; m/ U4 R3 F) V3 V# z1.overall length is minimum and longer needed to meet customer requirements are always allowed wothout " y; ?+ M( ^- O8 R) Q! o1 n
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engingeering approval
; F d) Z' r+ c4 k$ T 總體長度尺寸為最小,若按照客戶要求增長是被允許的,也不需要工程師批準
C- n0 {3 {1 }& y2 k& b& H+ K) |2.machined surfaces 250 rms max,thd surfaces 125 rms max 0 d: |+ w- q) k' j4 Q
機加工表面粗糙度為250 rms(Ra6.3),螺紋表面粗糙度125rms(Ra 3.2)
& L3 Z/ ^ }& Y, t( w" d3.inside raoius 0.03-0.06 in.) q4 P4 E- n, j
內部半徑為0.8-1.5,1.5為最大7 @- K$ q# z# u
4.corner breaks 0.015X45 in./ N! E# L8 B4 t9 c
棱邊倒角0.4X45: F! F9 @$ j, O( J0 P2 c9 j
5.concentricity between 2 mach.surf.within 0.015 t.i.r+ O- V3 x3 ~8 D- G% o( ]( Q
兩機器的同心度誤差量在0.4內
9 I/ w8 y* L; |" t: h% o6.normality,squareness,parallelism of machined surfaces .005per inch to a max.of.03 for a single surface
' |7 b4 \7 M( Y- |. F! i 一般的,機加工表面的垂直度和平行度.005/1 ,對單個表面.030/1 MAX
" }) o( }9 }0 b4 S9 g6 Q7.all thread entry&exit angles to be 25-45 off of thread axis
2 X$ a/ T* X5 E9 ]5 a 所有螺紋的起始和脫離角都是與螺紋中心軸夾角范圍為25-45 deg
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