This guy basically has no experience, and you guys are completely training him over the internet for free, and somewhat awkwardly I might add.
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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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7 l2 T. D$ `# V3 V1 k& x8 w* Ncmm talk about programming one. & D" ~4 D$ K) q
$ Z4 |" M6 d8 c2 M3 r* i5 r, CI've sat buy and read a dozen threads started by him asking about ridiculously basic cmm concepts.
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( C3 S+ S# f# w8 q3 O; ^+ a, DMaybe 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
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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
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2 q! I* s9 K0 l s+ gthat 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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for.
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The 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
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that 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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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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8 w, I7 c, _: z% q0 X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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9 w, p3 \9 \7 [7 N, a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。
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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3 v- G7 q5 z7 i! _5 ]6 t/ x7 H
0 H2 y+ F! D0 T! @5 c8 a* X( P5 C& z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( T" l$ U R, X; [' A8 F: u' U
. Q+ u) A& n4 h7 K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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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" R+ [. Y% m4 B$ @8 X
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6 T: x. e! z g0 R5 II (like many of you) am a professional fault-finder by trade.
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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.
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+ o2 _1 u" I7 `/ t0 h$ _Nope, can't find a single thing in error. I'd say that he's hit the nail squarely on the head.$ r9 `; W; X5 P( X5 u" `) i2 R2 M
' L, d, s0 b' U s! O1 zIn 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 ; g% e" W1 Q/ A5 g
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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
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: G! n1 k- G8 n+ f# Q# W; \3 BTHE MACHINES HAVE TO BE!!!!
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3 d. j6 q# j7 W3 c! a; P8 FAnalogy 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
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. }; m; i' V) \" |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?6 B6 c! i# k0 z0 s/ y7 J
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。
8 l3 ~ b* ~& }2 `, [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。6 H/ B) M5 l" B+ ^5 N, ?0 V- Y# j5 o
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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3 D/ z/ P% s* g5 z( |/ n1 g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8 n) |, g" O/ N5 S
% Y; }. e v i8 o! t优秀的学习案例:为什么鉴定为cmm怪人,就想机器一样3 J$ M$ }. M% z- h+ W
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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0 C$ K! O7 M; x3 h
: r( k3 c' x8 C3 d- c,对不对? 怎么会出错?6 w! `7 |. t6 N
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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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6 u0 w2 M9 ~3 {4 ^- m* z嗨,
% Z; S {5 A. u5 h8 V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。 ! u8 G1 X/ j2 L4 o( b
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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 , k+ C6 U' l" D1 n" U5 z2 Y7 a+ o( T
3 m% c: A9 X$ ^& C5 `at the end?
. ], y8 N& Z- u' T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?
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Is that 3um less than nominal, or 3um less than the calibrated result for the gauge ?; W. Q v$ Z$ _3 e2 H) S+ Q
3微米是不是小于名义值,或3微米小于环规的校准结果?
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" K- ^3 I, F' h( t& N- U& nits the nominal.As its has been engrved on the standard for example 10 mm (+9 microns).cmm is reading it as 10.06 mm. % Q6 R1 @: k( N) ~( I8 \$ x. c
正常。如果已经被标定例如10mm(+9mm)。那么cmm 读数为10.06mm。 6 ~& A) r- p8 Y0 m* d1 D' _
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8 ~6 l' y) f9 F" E% C& f10.06 is plus sixty microns. Six microns is .006. 8 \$ h) ?: \2 a, w4 A
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Perhaps you meant 10.006?
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9 A3 J7 h0 r& x( s. FIs 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 9 Z- R1 ] Z: }0 [. ]
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stylus. Make sure the measurements on the masterball are taken properly. Make sure the points are properly spaced and contacting the masterball at the
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$ h! o1 j# Y; Moptimal "attack angle".
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/ N. [2 {" o' {, rOnce 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 4 X) U/ x/ Q3 z' ^& n
$ u2 v9 T: \, {0 L5 d' L/ Ering 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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) P* O1 i7 I! x6 `7 C0 Y0 @(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 - X) M5 Q$ ~" O0 a7 ?; w
/ S& a% d9 O \/ zit's more than .03mm then there's probably something wrong.
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' i! Z' H6 W# x, wIf it's somewhere in between and you need better, if possible, try a shorter stylus. $ q0 D* W ^0 O/ v
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10.06是60个微米。六个微米是.006 。 4 ? c& l$ e7 G+ |9 X L
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可能你认为是10.006?
7 t" t0 s* O/ F. c8 ?) m0 H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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2 x! C( Q# W/ U2 ?定点是以正确的位置和最佳的法线角度去接触标准球., k8 p8 D, N( p7 L/ Y, \; u
! N! t( {7 u6 t1 b L, P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4 L+ B5 Z0 J& U
+ T" {" T) ^# A3 l7 R2 Y7 ]+ C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
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9 r" F4 J( T7 p1 C; w有错误。
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, E0 ]8 _ U: w( X; @: [- i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。 & S# j& z) E9 V' f4 y- \
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Agreed Ken,
8 F6 q2 w' t L8 KThe 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 1 R6 y# J$ x0 v, R4 d' {
. L4 Y7 M& q, D/ v# nrealise 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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" k! R0 A# s6 U- W, ?( Bto the outer surfaces, you just never know for sure. 5 Z* w1 r; d) R% p
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The other matters to add up are, + U* s$ W! ?* Q9 Z- `
the uncertainty of measurement of the machine :
& q' Z! u5 p! i' ithe actual calibration result for the ring gauge ( not the engraved size ): $ v$ E3 K8 [" [7 i* G6 v2 \
the algorithm used for the dia result :
+ W7 R+ U( F. \- o! U# x7 ]room conditions ( temp humidity cleanliness ) :3 L' f" ?2 t2 v# p! Y1 n
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$ @' b# _9 I% R! _Good luck G.P. in finding your 3 microns. They're in there somewhere. 5 G5 a. L, v; a. d
同意肯恩,* f/ \7 \% Z/ f. V+ B/ V: F
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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1 V- V4 a. L2 l/ U# l9 o- g! F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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3 S. w% I2 P3 t( V其他因素加起来是,
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环规实际的校准结果(不是被标的值):
7 N3 d) R6 d" P2 l$ V2 D结果圆的运算法则:
, E' L7 \' L( J, U/ k' B房间环境(临时湿度) :
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G.P找到的3微米误差就在里面,祝你幸运! - w* S, n6 o* b' n/ h7 q9 D, Y( G
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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?
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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?
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# t6 m9 I/ z3 \3 sIt's only my opinion G.P. , but if your trying to find your 3 microns, 2 I/ H% i0 q4 n
- I4 }' [8 ^ l) Athen use all means at your disposal to measure each point perpendicular to the surface.
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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 ? ; ]: X# g4 N" U7 J" S5 I
它只是我个人的意见 G.P. ,如果你想尝试达到3个微米, , ^" O- _7 ~/ @1 G2 e& m' t( U8 m$ C
/ b% o7 B: m% X K! ~+ h( H: c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。
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( h7 f0 A* ~0 Y& ?6 }0 \0 Y. g, @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? [. J [9 `) k' v( y
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: j. L, y F. E5 UI would measure it as a cylinder. Set my coordinate to that cyl. & measure circles incrementally in the ring gage. 1 v9 n2 D a* E
& k9 N3 M; a. O, z. R, P3 `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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You are chasing 3um error in a diameter measurement?!
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What type of machine? Manual or CNC% x8 u9 ~: G4 x5 ~: g7 i
What type of touch probe? TP20, TP2, SP25, TP200* M8 O+ o& S: ^- H! P* T& R1 {
What length is the stylus? 10mm 20mm 100mm
$ }3 F/ p4 ~& n. ?9 P1 Z: f2 t0 QWhat is the temperature in the room?/ J% t0 }/ p" _
What diameter is the ring gauge?5 v% K4 z1 l: n0 S7 c: K
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Let'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 8 r6 T# m( p" [ ~5 ?1 [
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people breathing heavy it can effect your measurement.% r6 t. n/ L$ y& d( Y
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% T* e" U: D$ e你试图测量一个直径只有3微米的偏差?!
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. t" Y( ]% `( J. o6 L5 H9 v哪类机器?手动或自动
! K+ a5 ~1 b% U- }哪类探头?TP20,TP2,SP25, TP2002 G: u E; }2 G6 j
探针长度为多少? 20 毫米 10 毫米 100 毫米0 C7 d$ H/ N, h# F7 `
房间中,温度多少?( f3 Y8 y# d2 Z* E2 X
环规直径为多少?
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5 q, `0 g5 c9 c& h/ X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。 |