How to Select Coordinate Measuring Machines                         Image credit: Nikon Metrology, Inc. | Renishaw   Coordinate measuring machines (CMMs) are mechanical systems designed to move a measuring probe to determine coordinates of points on a workpiece surface. They provide precise measurements of objects for design, testing, assessment, profiling, and reverse...
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Q & A on Coordinate Measuring Machines (CMM)

We asked our users for their input on Coordinate Measuring Machines (CMM). Here are the results of 119 users familiar with Coordinate Measuring Machines (CMM).

Who Took Our Poll? | Design Trends | Applications and Use | Features | Buying Advice

Who Took Our Poll?Top

Design TrendsTop

Q:
What new technologies are influencing coordinate measuring machine design?
15 answers
Answers:
Sophisticated design and analysis technologies are playing an important role in the designing of coordinate measuring machines.
~Arsalan Ahmad, Process Engineer, Lahore, Pakistan
The one thing in my mind is materials used to make it extremely light and hold up in a shop environment. Portable CMM.
~Paul F, CMM Programmer and operator (Portable And Table), Elgin, IL
Besides all the standard things I can only think of 3D printers and manually adjusted or improved parts from them.
~Engineer, Christchurch, New Zealand
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Q:
From your perspective, which companies are creating the most innovative coordinate measuring machines?
18 answers
Answers:
Zeiss CMM manufacturers are coming up with new and state of the art technologies.
~Arsalan Ahmad, Process Engineer, Lahore, Pakistan
The CMM which are small in size, accurate and flexible seem interesting to me.
~Engineer, Christchurch, New Zealand
Turbine blade inspection, and gear inspection.
~Quality Control/Assurance, Bangalore, India
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Applications and UseTop

Q:
What are some of the applications you have used coordinate measuring machines for?
29 answers
Answers:
Turbine blade inspection, and aerospace component inspection, Motor cycle crank case RH and Crank case LH , and cylinder head like this I used.
~Quality Control/Assurance, Bangalore, India
All manufacturing issues to reverse engineering of same manufactured parts. Now, I am starting in on the scanning software.
~Paul F, CMM Programmer and operator (Portable And Table), Elgin, IL
Checking of complex curved first off shots of moulded parts from a new injection moulding or die casting machine's tooling.
~Engineer, Christchurch, New Zealand
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Q:
Please share with us any “non-standard” applications that coordinate measuring machines have been used for.
10 answers
Answers:
I haven't experienced any non standard use of coordinate measuring machine up til now.
~Arsalan Ahmad, Process Engineer, Lahore, Pakistan
Marking future holes center for prototype parts (on sheet metal parts).
~Aguilar L, Quality Senior Engineer, Puebla, Mexico
Sorry, no knowledge of any non-standard applications.
~Engineer, Christchurch, New Zealand
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Q:
Do you know of any disastrous mistakes that occurred due to the incorrect usage of coordinate measuring machines?
9 answers
Answers:
Yes, for example one customer moved the machine from one room to another without asking the supplier. This resulted in a scale and reader head damage. Others don't use filters or air coolers or they don't exchange the filters in time for compressed air. This results in bearing damage and worst case, guide-way damage.
~Mihai Jipa, Managing Partner, Bucharest, Romania
Parts are missed measured when trying to get a measurement from a bad tip that has been changed to reach different areas. No collaboration for said tip.
~Donald S, Quality Control, Greenville, TX
If You use the Improper Power Supply,Without UPS and Earth Voltage >1.5V,It will damage the Machine Mother board.
~Prasanna V, Quality Control, Chennai, India
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FeaturesTop

Q:
What would your design or feature "wish list" be for this product?
16 answers
Answers:
Fully automatic with tactile, optics and roughness measurements possibilities on prismatic and free surface parts, with visual inspection and detection of surface states.
~Research & Development, Krakow, Poland
Probably the software behind the CMM to confirm its measured accuracy to the original data and allow for extra shrinkage and possible distortion too.
~Engineer, Christchurch, New Zealand
They should make a laptop docking station, the new Edge has a small screen that does this, I'm talking about laptop size would be nice.
~Paul F, CMM Programmer and operator (Portable And Table), Elgin, IL
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Q:
Is there any advice you want to share with users to help them avoid common errors in selection or usage of coordinate measuring machines?
10 answers
Answers:
Overcoming distortion of a part (e.g. slightly twisted) is something I have problems with, after receiving all the measured points and then comparing its accuracy back to what it was meant to be?
~Engineer, Christchurch, New Zealand
Preventive maintenance Know very well all specifications useful for operators Know very well the routines to measure common features in order to get correct results
~Aguilar L, Quality Senior Engineer, Puebla, Mexico
Once you have sent people to train on programming the machine have them work on the job making programs and training others so they will get the hang of doing it naturally.
~Donald S, Quality Control, Greenville, TX
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Buying AdviceTop

Q:
Do you have any advice for people relative to buying or using coordinate measuring machines?
12 answers
Answers:
First of all to know all details regarding tasks to do with CMM: - Smallest tolerance to apply, in order to choose the correct resolution and uncertainty. - Biggest size of parts / devices to measure, in order choose the right CMM size. - Take in account: Bigger CMM --> smaller accuracy
~Aguilar L, Quality Senior Engineer, Puebla, Mexico
Don't stop with the first you see and try them out on some of your harder parts to measure. Try programming simple part to see if the program is as simple as the part.
~Donald S, Quality Control, Greenville, TX
Handle the Machine with Care,Use all the Listed Safety precautions,Keep the Machine in Vibrationless environment
~Prasanna V, Quality Control, Chennai, India
Maintain the ambient conditions for keeping this machine, it will give you best results every time.
~Arsalan Ahmad, Process Engineer, Lahore, Pakistan
Software selection and training until the operators get it. Get the CAD Files to program too.
~Thomas Bates, Sr. Quality Engineer, Huntsville, AR
Review and check several suppliers. and check their applications.
~Francisco Saldana, Facilities Manager, Monterrey, NL, Mexico
Be sure what is your number one application before you buy
~Mihai Jipa, Managing Partner, Bucharest, Romania
Look at the ease of use on software before hardware.
~Paul F, CMM Programmer and operator (Portable And Table), Elgin, IL
Sorry, never actually used one myself.
~Engineer, Christchurch, New Zealand
Do not buy the first M/C you see
~Mark W, Quality Control, Birmingham, England
Pcdmis is very good
~Michael H, Quality Control, Huntsville, AL
RETAIN AN EXPERT
~GERALD ROSSANO, Engineering Consultant, FORT MYERS, FL


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