Recent Posts

This forum is being retired and replaced with a new blog.

Check out the blog here:   http://holcosales.com/blog

New content will be added to the blog only.

When you measure a cone, the diameter you get is an average – in between the small and large diameter.  To find where the diameter meets the cone – you have to construct that measurement.

In this example, imagine a cone with a centerline pointing in the Z direction, like the cone on the red 3D training part.

First, measure and construct a Z datum, so that you know where zero is.  Then, measure the cone and click done. – Next, Construct Cone.  Pick the measured cone, select “Composite”.  Then go to Nominals, and enter “0” for the nominal Z location (or whatever point along the Z axis you want).  Then close the nominal window and the diameter will be the diameter at Z=0.

[UPDATE:]

UPDATE:

Those with MeasureMind 14 or greater will need to setup permissions on the following directory:

C:\QVI

in addition to:

C:\OGPMM

Also - don't forget permission to the default routines directory.  But if you're following these instructions, you obviously have a network, so you should be saving your programs on a routinely backed-up network drive, right?   If so, it would make sense to change the default directory in input.cfg to point to your network drive!

I would advise using the intersect method - you will run into trouble if one of your lines is near 0 degrees.  It can bounce between 0 and 360 degrees and throw off the calculation.

The discrepancy is no doubt due to Plane Projection.  Make sure you are in the proper plane to analyze angles.  The default is XYZ (no plane projection).  So, when you do the calculation you are probably subtracting angles in two different projection planes.  When you compare to the intersection, you are seeing an average of the two projection planes of the lines.  This will be close, but not perfect.  If you switch to one of the standard views (XY or YZ or ZX) for the line steps and the intersection steps, you will find correlation.  Note:  if you choose the intersection method, you need to set the projection plane for the intersection step ONLY to come up with the correct measurement.

Hope this helps, and good luck!

If I want to determine the angle between two lines, I can think of two different ways to do it:

1. Calculate the result of A2-A1
2. Construct an intersect using A2 and A1

These give different results by about 3/4 of a degree.
Is one method more valid than another?
What accounts for the discrepency?

Thanks.

I'll be happy to help you, but it's hard without seeing the print.  If you can, email it to me at:  johnl@holcosales.com

I have several parts for which we must measure a max. taper from a tolernced dimension. I guess the way to do this is by a MATH fuction. Does any one know the proper math function or expresion to use for this measurement?

THX.
S.

Thanks.  That did it.

See the attached document.....

We have QC CALC set up for one user on a PC. 
Now that the routines are written, we are training another user. 
Each user will have their own profile on the PC. 
Running measuremind from the new user profile is not a problem, but QC CALC will not open. 
The new user is not restricted in any Windows way.
When trying to open QC CALC, the error message is:

Read/Write access to the following location(s) is required to run this software.

C:\Prolink\QC CALC 3.0\Misc Files\


Any Ideas?