This guy basically has no experience, and you guys are completely training him over the internet for free, and somewhat awkwardly I might add. : [/ r) v* b3 d- [4 u8 l' H }
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He started out with all kinds of monumentally stupid ideas about calibrating his machine himself, now we can easily see that he can't even properly operate a
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cmm talk about programming one. 3 o. Q7 u: i6 i2 `& C8 Z% U8 O
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I've sat buy and read a dozen threads started by him asking about ridiculously basic cmm concepts.
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8 I/ [. Z' P- l% TMaybe I would be more receptive if he came in here from the start and said "hey guys, I know absolutely zero about cmm's, but I want to be just like 3 c8 Q, d% t( i+ J h/ S
- y6 U3 r9 {; G2 @you...can you help me? Where do I start?" But instead I find myself continually astounded by the questions he is asking. It is so compelling to read just so ( h- q' I& S9 ~% ~- K
$ Q% R# x) t- ^7 S/ I3 R, Tthat I understand it fully when I get to the inevitable end of this story involving a major rejection and impending bankruptcy of some poor company he works
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! ]# _) R3 E* n. W, b" K; kfor. 2 b% u$ F2 p9 J+ B/ O c
2 N) w8 X0 q" L) Z5 d, |2 M! I3 IThe only possible outcome I can see is the company he works for ending up in financial ruins as he "programs" a part and their setup adjusts the parts so 6 J8 U9 Q2 A, b' `8 @# `& F0 y+ J
. W* \# F) T4 C" x7 Zthat they "look good" on the cmm reports and they ship parts to customers, ultimately destined for rejection or worse failure during operation. I honestly
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pray when I read his posts that he doesn't make something like steering or braking components, seat belt retractors.....the list goes on and on.
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% [; ^1 X* v$ C, I这一个人基本上没有经验,而你们正在免费通过互联网完整培训他,我可能稍微增加点难度。
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他从自己校正他的机器的各种非常愚蠢的主意开始,现在我们容易看出他一个甚至不能正确操作cmm的人。
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+ c }+ g; { }- A9 W5 w我做出牺牲,阅读一堆章节并被他开始问各种荒谬最基本的cmm 观念。' B. ]8 y2 N; z" s
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可能我应该更加接纳他刚进来就说:我基本对cmm了解为零,但是我成为你那样...你能帮助我吗?我从那里开始?但是我发现自己不停的被问的吃惊.我完全理解,当我得到这个故事必
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然的包括他工作的公司必然是非常容易被淘汰和即将发生倒闭
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( z% G8 w$ S* C. p我看他服务的公司最后的结果是财务破产作为他'程序'的一部分他们计划调整这部分以便他们在cmm报告中看起来好点.他们把这个给客户.最多被拒绝或者在使用中完全失败.当我
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3 t' e8 a5 ?% l5 J读他那职位的时候,我真诚的起到他不是做方向盘或者转向制动器,安全带....这个列表继续
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I (like many of you) am a professional fault-finder by trade. ' Y# Z/ k/ ]0 W9 Q3 {* J1 y4 L
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Let's see if I can find any errors or problems with anything that Section has stated in his last post./ l/ d0 h6 w# D6 a
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% A/ R( N* A' H, b( E" ]/ E* RNope, can't find a single thing in error. I'd say that he's hit the nail squarely on the head.
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$ y1 h; Z/ _& a' d; k' Z% M$ w% {, jIn fact, I've wondered several times in the past if this guy was really an experienced CMM geek who's just messin' with our heads, but I'm convinced that & W. c! S( ^# s6 M i; b
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he's on the level, which is quite disturbing. His situation could be used as an excellent case study about why CMM geeks should ALL be certified - JUST LIKE / |* {1 K% |; @- A C" H
6 r& t [7 D0 dTHE MACHINES HAVE TO BE!!!!
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+ m3 I2 x% b, ~% _: SAnalogy time: Why shouldn't it be good enough if a VEHICLE is inspected, registered and licensed? Why should the OPERATOR have be trained and licensed? The 7 h9 K! D4 u' e. d, P
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car's just fine, and that's the thing that does all the work! The operator just goes along for the ride, right? What could possibly go wrong?
+ g& d1 G' p& y8 a# W我(象你们中很多人一样)是一个经过专门培训对质量吹毛求疵的专业人士。
+ a# K6 J0 W* k& @& I9 R: s如果我能找任何的错误或的问题任何事,让我们见到那一个区段已经在他的最后职位中陈述。& @8 O. N6 Y/ r7 H0 S8 b7 o' Y
不,不能在错误中找一些线索。 我将会说,他脑子坏掉了。
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事实上,我在过去怀疑过很长时间这个家伙是不是真的是一个有经验的cmm怪人,他仅仅是打乱我们的思路,但是我确认他是一个卓越的人.这是不用讨论的,他的情况应该被当作一个
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优秀的学习案例:为什么鉴定为cmm怪人,就想机器一样 d0 A) J5 [7 a( L, E) s# y, ~/ _
; `0 z2 S" ]% n) t; i7 E3 g: f" y类似:如果一辆车辆已经被检查,登记以及许可,它为什么不是最佳状态? 为什么那操作员应该被训练而且得到许可的? 小车还好,所有的工作都一样! 操作员仅仅是凑凑热闹$ @) E* F$ V/ r) g6 E
( C2 n8 S& n7 ^* R# T g: s, f,对不对? 怎么会出错?" n5 P1 _1 @* I l/ g
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hi,' S' A6 I% O$ D, r. _0 P, t2 v& H$ S
i think you guys are fedup from me.i am really sorry for that.But appreciate the co-operation of you people.
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我认为,你们是从我这郁闷.我真的抱歉。但是还是感激帮助者。 1 k& o8 n! X( b# N5 @/ k
- x$ T( {5 u G- L- D0 ]% v" ?my machine is measuring a standard ring gage 3 microns less.is there any option in the metrolog to compensate it manually or i have to add up in the results + X* a6 s) w9 j1 \7 w, k) Q/ L
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at the end? ! ?' J* _5 C9 {1 k* z
我的机器测量一个标准环规小了3微米.是不是有选项去手动补偿或我不得不在最后把它加入到结果? 4 Y ~9 A. {; F2 c
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Is that 3um less than nominal, or 3um less than the calibrated result for the gauge ?
. |6 ~% |" s5 N3微米是不是小于名义值,或3微米小于环规的校准结果?% [ `$ X. d- ]/ |; F
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# L* e; L* f" U2 Xits the nominal.As its has been engrved on the standard for example 10 mm (+9 microns).cmm is reading it as 10.06 mm. $ c* t4 w- Q5 P
正常。如果已经被标定例如10mm(+9mm)。那么cmm 读数为10.06mm。
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10.06 is plus sixty microns. Six microns is .006. G, W7 k# h9 }: l$ |1 P, F8 d
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Perhaps you meant 10.006?2 S6 D5 Z; A6 I- y4 k- X
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Is your cmm nc or manual? If it's manual, my advice would be to give up and buy a real cmm. If it's nc then make sure you have a program to calibrate the 3 Z& ?/ `: C0 T7 g, s; N
6 G- E5 I* D, k# q( Z+ ustylus. Make sure the measurements on the masterball are taken properly. Make sure the points are properly spaced and contacting the masterball at the " E0 x4 Y1 J& }7 p. c
6 \" [# p& Z! O/ ?! S0 }optimal "attack angle". / v! b* @' ?: r; D6 r
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Once you have a program for probe calibration then you should do some testing. Calibrate the stylus and inspect the ring gage several times. Re-position the - T8 M3 Y# {$ R
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ring gage between runs. You may want to re-clean it between runs but be careful not to affect the temperature. Then, repeat this whole process several times
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(including re-calibrating the stylus). If the variance you see here is more than .003mm (i expect it will be), then the 3 microns you are seeing is noise. If ) }; a, r' z6 F7 T# M
4 H( L# o9 r; ]4 ^; Zit's more than .03mm then there's probably something wrong.
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If it's somewhere in between and you need better, if possible, try a shorter stylus.
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10.06是60个微米。六个微米是.006 。
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可能你认为是10.006?
" g, I4 ~- ~ e2 c. q" ]5 c你的cmm是自动还是手动? 如果它是手动,我的建议是放弃它同时再买台真正的cmm 。如果它是自动, 那么确信你有建议一个探针校正程序。 确定在标准球上的测量正确的。 确
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定点是以正确的位置和最佳的法线角度去接触标准球.; M0 k7 u% ^) f. Q( J3 j! A: C
( ?) I3 }+ M) @2 p" i( u一旦你有一个校准测头的程序,你应该做一些测试.校准探针和检查环规多次。测量中重新调整环规位置。在测量中你可能想重复调整它但是小心不要影响它的温度
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+ H& }/ Q2 D0 E( g+ |) A1 B; [然后,重复这整个程序多次(包括重复校准探针) 如果在这里你见到的差异超过.003mm(我预计它会), 那么你看到的这3个微米是噪音。如果它是超过.03mm, 那么那些地方可能) B* Y# z6 m/ Y2 `
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如果它处于中间,同时你想更要的效果.如果可能的,试一个较短的测针。
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Agreed Ken,* Q' k. W: [; e& |/ L
The biggest ball dia with the shortest shank length is always the way to go. A TP200 instead of a TP2 or 20 would reduce the lobing effect also, but I
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realise the choice is not always there.
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I always set my alignment plane through the centerline of the ring ( cylinder measurement ) as , although these gauges are usually square from the cylinder
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to the outer surfaces, you just never know for sure. 9 R0 s; U% V, h1 ]9 C5 Q
7 \3 \5 G" \( K5 j" kThe other matters to add up are,
8 n5 e4 H3 f1 z! Wthe uncertainty of measurement of the machine : + k% i3 e% `9 {: ?
the actual calibration result for the ring gauge ( not the engraved size ): : Y6 h8 @; g. ]) l
the algorithm used for the dia result :
7 H2 a3 J) G: H7 Aroom conditions ( temp humidity cleanliness ) :
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/ ]6 @+ v. m# g, D9 V& K2 JGood luck G.P. in finding your 3 microns. They're in there somewhere.
% A1 ~- e- r8 E7 ~- ?( q1 G同意肯恩,
- ^0 C& N9 |) b1 _# C4 h2 v这个方法最好是用最大的球茎和最短的探针长度。用TP200代替TP2或tp20会也减小效果,但是我认为问题并不在那里。
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我总是通过环规的中心设置我的基准面(测量圆柱),虽然这些环规从圆柱到外圆面是非常一致的,单你仅仅是不确
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& [/ a$ Z- k. C) x; y1 ?其他因素加起来是, & V8 G4 y- `: K
机器的测量的不确定: 9 G: i& d' q+ T$ q
环规实际的校准结果(不是被标的值): 1 n6 M9 R/ x' n) o" e2 }# G( g6 `9 S
结果圆的运算法则:+ q+ S( K% y& R) n- B) V
房间环境(临时湿度) :9 A1 w; L. f2 N; \
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G.P找到的3微米误差就在里面,祝你幸运!
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Is it necessary to align a ring gage beofre the dia measurement.I have read somewhere that we dun need to make alignment for dia measurements.is it right? 5 l4 K* s9 ?0 \. `/ S+ f1 i
6 b/ A/ l1 v5 K* P. }在直径测量之前有必要定位环规。我已经某处读我们需要制造 对准直径测量.是吗? : o( O$ R7 ~9 M5 Z- M
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It's only my opinion G.P. , but if your trying to find your 3 microns,
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then use all means at your disposal to measure each point perpendicular to the surface.
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# r4 p0 n0 f6 J' ?: ?That includes aligning the ring gauge before measuring for dia.
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As a matter of interest, what size does the calibration certificate say the ring gauge is ? 3 M7 _3 y+ W) [# N0 |
它只是我个人的意见 G.P. ,如果你想尝试达到3个微米,
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使用所有的方法(尽力而为),在测量任意一个点都要垂直于表面。 4 _2 {8 N5 t4 |9 E
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那包括在测量直径之前排校准环规。
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稍微有点好奇,环规校准报告说环规尺寸是所少? 6 g- d( w- l5 |3 T- R$ J2 W
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I would measure it as a cylinder. Set my coordinate to that cyl. & measure circles incrementally in the ring gage.
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我会把它作为一个圆柱来测量。设定我的坐标系为圆柱坐标系同时在环规中逐渐提高测量圆
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; T" G% K, I) |0 s3 J7 I0 w6 M( O* sYou are chasing 3um error in a diameter measurement?!
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What type of machine? Manual or CNC
J( N1 j i- f3 e( d& dWhat type of touch probe? TP20, TP2, SP25, TP2004 ^2 O( l. d2 D5 \: L+ t% B
What length is the stylus? 10mm 20mm 100mm9 h% D' E% @; A" N
What is the temperature in the room?0 e; ?7 I6 N; G( `6 {
What diameter is the ring gauge?
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! r& J( R2 \: g6 ILet's face it... 3um (0.003) is not a significant error, if you have 1 person standing near the machine breathing really heavy and the next day there are 5
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people breathing heavy it can effect your measurement.* s6 z4 t' T+ b }( Z2 G% \: @0 H2 m
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你试图测量一个直径只有3微米的偏差?!! _. \/ E+ V& f1 p- T6 `
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哪类机器?手动或自动+ z9 f8 S/ |4 r5 h, m7 I9 C
哪类探头?TP20,TP2,SP25, TP200
$ [& w/ {. l# N5 g4 g探针长度为多少? 20 毫米 10 毫米 100 毫米
# o+ Q, e2 f5 r# R房间中,温度多少?
0 `8 B0 D7 |% h* w环规直径为多少?
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让我们正视它。3 um(0.003) 并不重要,如果机器的附近站立的1个人呼吸 真和明天5个人呼吸都能影响你的测量。 |