Have a part 4 diam not realy round need to measure and report circumference of parts. Never had this one best way to measure and report. Parts have split in diam like a saw cut.
reporting circumference
Collapse
X

So do you need to report the actual surface distance or is reporting the circumference of the measured circle adequate. If you just need the circumference of the measured circle, insert a variable using c=pi*d. I'm not sure about how to use pi in a variable but I bet it can be done.
v1=pi*cir1.d
If you actually need surface distance, I don't know off the top of my head. I'll have to ponder it for a while.

I do not think Pcdmis can give you 'length of line'. Sounds like something that would need to be scanned, continuous contact or laser, then length of line reported from a cad software.sigpic
Originally posted by AndersII've got one from September 2006 (bug ticket) which has finally been fixed in 2013.
Comment

Thanks I actually need surface distance thought of pi times diam but parts are not really round. And yes Matt was wondering if there was a way for pcdemis to determine this. looking for a good way because there are sixty parts. Was thinking this will have to be done on solid works.sigpic
3.7 MR4
Comment

How many points are you allowed to take?
This is probably going to suck as a solution BUT if you take enough points and distance 3D from point to point and using variables you capture a cumulative sum of the distances it may prove as accurate as solidworks.Bill Jarrells
A lie can travel half way around the world while the truth is putting on its shoes.  Mark Twain
Comment

Originally posted by Wingman View PostHow many points are you allowed to take?
This is probably going to suck as a solution BUT if you take enough points and distance 3D from point to point and using variables you capture a cumulative sum of the distances it may prove as accurate as solidworks.
Comment

Originally posted by Goodluck View PostThat's not a bad idea. Measure it as a circle, set the circle as the orgin and then create a bunch of polar vector points? Paste with pattern might also be usefull.Bill Jarrells
A lie can travel half way around the world while the truth is putting on its shoes.  Mark Twain
Comment

Just had some thoughts and wanted to post them before I forgot. You could find 'center' and zero. Find corners of the 'split' and create start and end lines.
Using Variables
Assign Total Angle Angle between Start and end Lines.
Assign Step Angle as Total Angle / Num Hits
Align to Start Line
Count = 1
Circumference=0
If Count < numhits
Rotate Step Angle
Vector point(count) Radius,0
Circumference = circumference+dst(3d) point(count1) to point(count)
count=count+1
endif
Circumference = circumference+dst(3d) point(numhits) to Point end
See attached pic
Starting point would need renamed to point0
Ending point would need renamed to pointend
enough hits it would work
I realize it isn't a perfect cure but it would get you there. Solid work might do better if it can fill in the spacing with a curve instead of a straight line.
Of course, if you knew the math formula for circumference of a small section of an arc you could compute every three points into an arc and calculate their distance. You can find the formula in Machinery Handbook I am pretty sure.
Would take some code up front but it is doable.Bill Jarrells
A lie can travel half way around the world while the truth is putting on its shoes.  Mark Twain
Comment

Originally posted by Wingman View Post
Of course, if you knew the math formula for circumference of a small section of an arc you could compute every three points into an arc and calculate their distance. You can find the formula in Machinery Handbook I am pretty sure.
1) Find diameter
2) Circumference = pi*rsquared
3) Circumference/360 = Distance for 1 degree of arc
4) 20*Distance from above = distance for 20 degrees of arc
Now I may be totally misunderstanding what you want, but I think that works.When in doubt, post code. A second set of eyes might see something you missed.
sigpic
Comment
Related Topics
Collapse

by Skippy213I am in need of trying to get a measurement from one plane to a circle but I need to know the Z distance and I am not able to do this with a normal insert...

Channel: PCDMIS for CMMs
04112018, 01:36 PM 

by Jeff HuntI was trying to come up with a good way of inspecting thicker lasered parts. The issue with these types of parts is the kerf of the trim will cause your...

Channel: PCDMIS for CMMs
08032012, 09:02 AM 

by ElroyCarbonHello,
I am running version 3.2 and interested in measuring the distance of the line as it curves around the radius. In other words I...
Channel: PCDMIS for CMMs
10202008, 07:35 PM 

by gsciolaGood Day, All:
I just created a variable (V1) to calculate the area of a circle. Now I need to show this on the report. Does anyone know...
Channel: PCDMIS for CMMs
05102016, 12:34 PM 

by AndyDaVeeDoes anyone know how to measure a distance between two features.
on a curved surface.
Channel: PCDMIS for CMMs
10152014, 04:39 PM 
Comment