Calibration of SMT (Surface Mount) Assembly Machines

shrikantborkar

Starting to get Involved
#1
Dear All,

Recently I have been told to additional Charge for ISO Activities.

Please guide/Inform
1. How do we calibrate SMT Machines? what Parameters to be considered?
Is it been calibrate In House or M/c Manufacture can Help to this?

Please inform how you Doing this Calibration?

Thanks

Shrikant Borkar
 
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K

kualititaj

#2
Re: Calibration of SMT Machines

Assuming SMT stands for Solder Mount Technology oven, you can't calibrate the machine as it does not measure anything. You can calibrate the thermometer used to measure the temperature in the curing stations of the machine. is this your intent of the question?
 

shrikantborkar

Starting to get Involved
#3
Re: Calibration of SMT Machines

Hi, kualititaj

Thanks For your Reply.

yes , Regarging Reflow Oven , I did necessary calibration arrangement.ie. Calibtation wrt. master Temp Meter.

But My Question is regading

SMT Mounting assembly machine. where 80 to 90% population of Parts been get mounted by machine.
this part may accomodate in Maintenance activities.
I just want to confirm whether this Part will come under ISO calibration?

Please comments

Thanks
Shrikant Borkar
 
K

kualititaj

#4
In that case, in my experience we do not claibrate an SMT mounting machine as it is not a measuring instrument, but an assembly equipment. What would be more appropropriate is to do a PM on a regualr basis and show that the pick and place head is working within specifications.
Regards
 

DannyK

Trusted Information Resource
#5
In my experience with SMT equipment, there usually is no calibration for the screen printing, pick and place and reflow oven.
Verification or preventive maintenance activities are usually conducted as per the manufacturer's maintenance manual.
 
S

Sushma

#6
Assuming you are talking about Surface Mount Techonology machines,
Some points :

For Reflow and wave machine, there’s no request for verification, due to verify the machine performance every day though the profile testing.

Primary verfication, calibration ands preventive maintainence for mounting machine ( let's say all equipment ) also comes under ISO calibration.

Regards
 
V

vanan10

#7
We do practice mounter calibration on a bi-annual basis. The area of calibration covers the following areas:

- Z-axis calibration
- X&Y axis gantry calibration
- Theta calibration
- Recognition device calibration
- Feeder truck/cart x,y,z offset calibration.

All of this is followed by CpCpK measurement.
 
J

justncredible

#8
Sine it is a CNC type of a machine you could use a ballbar, or laser to calibrate it. You might contact the bigger companys such as reinshaw and see if they have any experience.
 
G

gfreely

#10
Having worked as a Calibration Program Manager for a manufacturing company with several lines of SMT assy, I actually think I can input something useful! A first! :lol:

As was stated, the thermometer and other "measuring equipment" can be added to your list of equipment to be cal'd. If it can directly affect the realisation of the product, it SHOULD. However, the SMT assy machinery is not calibrated equipment because, again I am reitterating a previous post, it does not "measure". I fought this battle when I took over that job and FINALLY won.

A periodic Preventive Maintenance or Performance Verification *can* and SHOULD be done according to manufacturer specs at the minimum. THESE checks should be covered under your QMS or ISO 9001.

Assuming you have a final test of the assembled product, only a PM program would really be necessary. If the units are testing good after assy, then as long as the machinery is kept up (and documentation NEVER hurts) then Verification Checks are just an extra step you may or may not wish to embark on.
 
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