CMM Calibration

[Matthew D. Hoedeman]

Yep, Monday was the day the tech came in to do my machine. Original machine specs are +/-0.0007" for both accuracy and repeatability. Here are the results:

Checked linear every 4" in all axis, deviations in tenths (1=0.0001")
X: 0,-1,-1,-1,-2,-1,0,1,1,-2,-1
Y: 0,-1,0,-1,-1,-2,0,-1,-1,0,1,1,2,1,2,2
Z: 0,-1,-1,0,1,-1,-2,-3,-2,-1,-3

Maximum deviation = 0.0003" from nominal

Squareness over 27.5" on a solid gage
XY 0.0001"
XZ 0.0002"
YZ 0.0002"

Repeatability in X-, X+, Y-, Y+, Z-: variation of 0.0001" on repeated touch, all axis.

Then, after doing the calibration the correct way, they checked the machine using the ball-bar with these results at 20 positions on the table (deviations from calibrated lenth of ball-bar, NOT comparisions of opposite angle setups):

+0.0000
-0.0002
+0.0001
-0.0004
+0.0001
-0.0003
-0.0002
+0.0001
-0.0004
-0.0004
+0.0001
-0.0003
+0.0001
-0.0004
+0.0001
-0.0002
-0.0003
+0.0001
-0.0004
-0.0003

Biggest adjustment made by the tech: 0.0004" of squareness in the YZ plane over the 27.5" gage.

So! My machine is good and ready, how about yours?

[george frick]

hey "buckethat" we missed you the last few days-was gettin' a little worried bout ya-glad ur back. i guess you had a "wild" 4 days off. need to reset your old avatar so the new guys can see ya.

[Matthew D. Hoedeman]

If they are that interested, they can see 'me' and 'my' girls on the profile page. Only 3 are left from the original picture, but they are there.

[kbotta]

Yep, glad your back!

Was getting worried you didn't make it back from the w/end



Kev

[kbotta]

Hey, are those Lansing girls (over on Edgewood??)
Kev

[Matthew D. Hoedeman]

You BET!

YES THEY ARE! Most of them are Michigan State University (THE university of Michigan) Students. What a nice bunch of girls!

[\v/inston]

welcome back old chap!

nice calibration! you should take it to Hooters to impress the babes down there. "hey babe check out how accurate my probe is"

[george frick]

cmm calibration #'s

welcome back old chap!

nice calibration! you should take it to Hooters to impress the babes down there. "hey babe check out how accurate my probe is"

funny how no one else would really relate to those #'s or even care except us "dogs" on this board

[ag162]

I guess it's not the size that counts,,,,,,,only the accuracy. lmao

WB Matt,


A.Gore

[kbotta]

Yep, I love MSU!!
Use to work on the corner of Gunson and Gr. River in my younger days.

Stupid stupid beers....
Kev

[John Kingston]

Go Buckeyes !!!!!


Now I run and hide!
Oh, yeah. Welcome back Matt.

[Matthew D. Hoedeman]

A BUCKEYE is nothing more than a "hairless nut", and I guess you prove that right to the limit, eh John?

[John Kingston]

Did you ever see a buckeye with its outer shell? Pointy things sticking off the whole O.D. We can be very "Pricky".

[Matthew D. Hoedeman]

Oh yeah, my brother's and I used to have 'pricker-bomb' fights when we were kids with those things in the back yard. They hurt like you wouldn't believe!

[John Kingston]

ROFLMAO. We used to do that too. Apples and crab-apples also. Even would have snowball fights with buckeyes in the snowballs. Leave the little prickery things sticking out.

Nowadays kids use Nerfs and stuff. Sissies!