CMM Quarterly on Teachable

The current CMM Quarterly training programs on Teachable.
Calypso Basic Training 1, 2, & 3
Calypso CAD Model Training
GD&T and Calypso
CMM Manager DCC Training 1, 2, & 3
All training come with downloadable videos and pdfs. Train at your own pace.


Calypso - PCM Confirm

This article focuses on the Calypso PCM command - confirm. There are times when constructing a program that as programmers we need the operator to follow specific instructions or confirm that something is a certain way before executing the program


Example: A confirmation ("confirm") in PCM


We have written a calibration routine program but we need the operator to confirm that MasterBall shaft at the '0' position before the operator executes this calibration program. This will avoid the stylus system from striking the MasterBall base during the calibration. If it is not at the '0' position I want to end the program.


Here is one way this is done.


NOTE: this example uses PCM, a optional module on Calypso.





Write the program as you normally would. When this is complete right click to access the parameter function.





Choose Parameter and this will open the Pre and Post Parameter settings dialog box











In the presetting box and type the above commands. Now there is another method to select the code above and we will cover that in a future article.
When you run the program this box will appear






The Code
VarC is a variable statement. This could be named anything. I used VarC to represent Variable Confirm.


If the answer is Yes or
if VarC equals True then continue on



If the answer is No or
if VarC equals False then
endinspection (close out the inspection run)



This can be used for a variety of situations where confirmation is required. Just change the question is the confirm statement making sure it is between quotes.


If you do not have the PCM module you may want to consider purchasing it. PCM adds a flexibility to Calypso that benefits both the programmer and operator.

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CMM Quarterly Publications

This book allows you to teach yourself the basics of Zeiss Calypso. Through this manual you learn such topics as alignment setups, probe qualification, measuring features, defining characteristics, and much more. You will also learn how to program with or without CAD models,

This manual includes instructional videos.
This book covers all revisions from 5.0 and including 5.6

We do offer Over the Web training to assist in any questions you have.

Discounts are available for multiple purchases. Please contact us directly at cmmquarterly@gmail.com for more information.
This book sells for $800.00 USD plus $10.00 shipping


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Bilateral Equal Profile

A common question about profile is, if I take the minimum and the maximum values of my profile output they don’t add up to the profile results value. What is happening with the profile calculation?


Let’s look at one of the profile tolerance zone shapes.
Bilateral (Equal Distribution)

Let’s break down this picture above:
The black line is the Nominal Geometry.
The green line is the actual profile.

The blue lines are as designated, the upper and lower tolerance lines. Taking the blueprint tolerance and dividing that number by two, i.e. 0.10 is +/- 0.05 will assign the position of these lines.
The red lines are the actual reported profile deviation. This is where things won’t seem to add up. If my min is -0.0006 and my max is 0.0009 why is it not reported as 0.0015? Instead Calypso reports the profile as 0.0018. Calypso takes the point with the greatest deviation from the nominal geometry and doubles that result for the actual profile result.
Where A is the absolute value of either the min or the max the actual profile deviation = 2xA. 
1.     Find the maximum value, or the largest deviation toward the outside of the part
2.     Find the minimum value, or the largest deviation toward the inside of the part
3.     A = The largest absolute vale of either the min, or max
4.     Reported Actual profile deviation = 2xA
Max:    .0009
Min:   -.0006
A = 0.0009
Profile Actual = 2xA = 0.0018

 NOTE FROM EDITOR: Although this article is focused on Calypso this formula is used in all softwares to calculate Bilateral Equal Distribution.

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