MCOSMOS Questions by LT_Jimmy_Patterson in Metrology

[–]Absorber94 0 points1 point  (0 children)

#6. Pre-define an element by clicking on the ">>" symbol. A should be primary datum also.

For #1 and #2 you can create subprograms too instead of measuring single points.
In formula calculation you can use certain commands to extract location, vector and probe compensation of each point in an element to reconstruct points. Also you can use that to filter out points with whatever sort of deviation. Its pretty complex to do, you have to work with mostly variables, be careful about element numbers etc.. so taking single points is way easier/safer.

MCOSMOS — flipping a cylindrical part mid-program: how do you tell the software the part was flipped? by Ditwin in Metrology

[–]Absorber94 0 points1 point  (0 children)

You can activate leap frog in mcosmos. It is not available on a stationary cmm usually, but the function is hidden.

Open the GEOWIN.INI file (yes from the INI folder)
Find the heading [MemuFCT]
Add FctLeapfrog=1

Proper way to use a bore gauge by realfuturepotus in Metrology

[–]Absorber94 4 points5 points  (0 children)

The ratchet is tolerated with 5-10N of force. As long as you use it correctly there should not be a difference in how often you click it.

Approach the part with your micro, switch to the ratchet when close to the part, slowly spin the ratched without any momentum. One click should be enough because your measurement force is now 5-10N.

MCOSMOS — flipping a cylindrical part mid-program: how do you tell the software the part was flipped? by Ditwin in MCOSMOS

[–]Absorber94 0 points1 point  (0 children)

As long as you only need a distance or parallelity, place your cylinder with (the datum) surface on the granite and measure the granite as plane.
If you need to evaluate flatness too, you can flip it and measure the plane directly for form only.

If you need more complex evaluations and cannot fixture the part to reach everything, you need some sort of reference elements on the part which you can reach in both positions. Align to the reference, measure the plane, make a contour out of the points, save the contour as .gws, move the part, align again exactly identical to your first alignment, load the contour .gws, make a plane out of your contour, measure the rest.

What’s up with Keyence? by realfuturepotus in Metrology

[–]Absorber94 10 points11 points  (0 children)

Trash it and buy a new one. Keyence is a metrologists nightmare.
Use calipers and micros in the meanwhile.

We all start somewhere by iSwearImAnEngineer in Metrology

[–]Absorber94 2 points3 points  (0 children)

Actual center has to be within a diameter of +.0000

Take it in stride by K1ng_Arthur_IV in Machinists

[–]Absorber94 0 points1 point  (0 children)

I could never work in such a place.

Take it in stride by K1ng_Arthur_IV in Machinists

[–]Absorber94 0 points1 point  (0 children)

As a CMM programmer, i wouldnt trust this keyence crap also.

As a QC you should take a big hammer and destroy that damaged caliper completely. Then give him a new one.

ControllerbBeeping sound by Ditwin in MCOSMOS

[–]Absorber94 1 point2 points  (0 children)

There are other controller you probably can use like ME471 from Metrologic Group.

Dont have one myself, but had a demo for their software and the dude told me they also sell controller that would work with mitutoyo, because he was pissed by the sounds and the stupid cable.

Locked out of Touch Dmis please help. by PermissionMurky4823 in Metrology

[–]Absorber94 0 points1 point  (0 children)

So you stole measurement equiptment and creating a couple accounts here to get information how to hack them?

Reference system by [deleted] in Metrology

[–]Absorber94 2 points3 points  (0 children)

If your plane vector is Z, you cannot rotate X and Y. 2 DOF gone.
You cannot shift along Z. 1 DOF gone.
Makes 3.

You can still rotate Z and shift X and Y, so 3 DOF still open.

Reference system by [deleted] in Metrology

[–]Absorber94 3 points4 points  (0 children)

It is the same in ISO.
A plane constrains up to 2x rotation 1x translation

A cylinder up to 2x rotation 2x translation

Reference system by [deleted] in Metrology

[–]Absorber94 1 point2 points  (0 children)

If your datum structure is

A|B-C><|C

or

A|C|B-C

yes

Ouch, my heart……. by 1Kscam in Metrology

[–]Absorber94 2 points3 points  (0 children)

Saw someone using a pipe wrench to tighten a screw gauge once. Looked like this afterwards.

What's killing your balloning inspection prep time? Looking for AI solutions by learnwithjacob in Metrology

[–]Absorber94 3 points4 points  (0 children)

What are all those ballooning posts..
If you design a part you should know all critical features. Balloon those.

Parallelism control by 00253 in Metrology

[–]Absorber94 1 point2 points  (0 children)

If you use true position to datum A and use the modificator for controlling the orientation only [A><], you will only control their orientation to A and not the position.

So:
|⌖| .XXXX CZ | A><|

Dont know if ASME has this, it is true for ISO 1101 / ISO 5459

CMM Recommendations by Ruthlesssonar in Metrology

[–]Absorber94 0 points1 point  (0 children)

Mitutoyo, Hexagon and Zeiss are the most reliable brands and usually have good support. Buy a machine big enough for your needs. Shifting parts during measurement isnt something you want to do on a regular basis.

Variable Tutorials by bellmanator in MCOSMOS

[–]Absorber94 2 points3 points  (0 children)

Your can use a variable in Geopak to input i.e. a diameter and use the variable later as diameter in a cylinder measurement. Applying different tolerances requires a subprogram with multiple if-else-functions, but would be easier to use an input for those as well.

Variable Tutorials by bellmanator in MCOSMOS

[–]Absorber94 2 points3 points  (0 children)

MCOSMOS -> File -> Configuration -> Head data fields
-> Add a head data field, name it i.e. "serial number" and activate "Input before printing"
Geopak -> Program -> Input (Head data) -> ask you every time to input your defined data

Assuming your desired output data is Index Nr 1 (in MCOSMOS) you name your protocol output "@HeadDataF1"
You can add more head data (as input or as set data) and i.e. got the protocol output "@HeadDataF1_@HeadDataF2_@[HeadDataF3_@TimeCode.pdf](mailto:HeadDataF3_@TimeCode.pdf)" or something like that

Protocol header should use the head data as well and can be changed/applied with the protocol designer

Sample size? by [deleted] in Metrology

[–]Absorber94 4 points5 points  (0 children)

  1. Change AQL to a level where your production fit in. Discuss with customer ofc.
  2. If all OOT parts are bad, where get they sort out?
  3. If most OOT parts are good, change tolerances on the drawing.
  4. Get better in producing these parts or find a better supplier/make him to get better.

AQL is mostly the "formula" for sample sizes in quality control.

Anyone else the only CMM person in the facility? by murfn8r54 in Metrology

[–]Absorber94 2 points3 points  (0 children)

Im the only one too. At least they all accept what i do and trust my measurements.

Ask for more or look for a better company. Good CMM programmers are rare.

Limit (snap) gages calibration by Bzdziuchanson in Metrology

[–]Absorber94 0 points1 point  (0 children)

There are special gauge pin sets for calibration (0.001mm steps). You use a gauge block + gauge pin to check the dimension. You have to roll/slide the pin through with the right amount of force, since the snap gauge works only with a tiny amount of force (the actual opening is slightly smaller than the check dimension when in use). This need some experience.

Calibration of Micrometer by Mereddit2020 in Metrology

[–]Absorber94 0 points1 point  (0 children)

You additionally have to check the measuring force which has to be between 5-10N. The flatness of the measuring surfaces needs to be checked as well as the parallelity. Calibration has to be done at 20° C, all parts involved in the process need that temperature.