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Typical engineering discussion to determine the correct Turnlock fastener for an application
Typical engineering discussion to determine the correct Turnlock fastener for an application.
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This looks much more better, and I’m confident that this will work in your application.
Here you have the 3D
First, thanks for all support, helpful for me.
I have attached a drawing where I used MHSRF33S. Have I understood your suggestion correctly?
Från: Bart Vandezande
Then you need to add the 0.4mm in your formula
15.7 (grommet 1.2mm included) + 0.6=16.3mm
15.7 – 1.2 +0.4 + 0.6 = 15.5mm
Which means you have the range 15.5-16.10 ; which is length 27 and not length 28
Furthermore, if you want the connection not sit stiff, and your total paint thickness is less then 0.6mm then it would be recommended to use length 26
I would though use another type of fastener.
Plastic is not good for outside use: (plastic can swell due to moisture and also sunshine might give issues later)
I would use following:
Total thickness to cover with the paint: 15.7 – 1.2 + 0.6 = 15.1mm
Which means length number 7
hole size to be drilled into your plate of 2mm is 7.9mm
If you need to install many, then a tool can be bought
You can opt to
rivet mount https://anemo.eu/turnlock/MTHRF25S
weld https://anemo.eu/turnlock/MTHRFWS (take care: that’s for very high volumes: you need special welding machine for this)
advantage: your rivets do not need to be countersunk, so you can use standard stainless steel rivets.
Hole pattern for the receptacle:
The above series have a clamping force range between 30N-60N
Which means in worst case = 30N
Which means pushing with 3kg against the panel thanks to one quarter turn, since you install 4 of them, it would be more, however vibrations will make the quarter turn go under bigger stress levels.
I would therefore opt for a Belleville washer system, with clamping force: 350N-380N
(the current system you selected has only a much lower value, as the spring is in the receptacle feature.
So as a conclusion:
(sorry, I’m writing as I speak)
The MHS series would be ideal.
Total thickness = 15.7 – 1.2 + 0.6 = 15.1mm
Stud length number 26
You can opt for the fixed retaining washerhttps://www.turnlock.eu/mhswcs
Or the more common one: https://anemo.eu/turnlock/MHSWSS
your receptacle would be: https://anemo.eu/turnlock/MHSRF33S
the 3D drawing of the stud will be sent later
No i mean total paint thicknes off both plates is 0.6mm.
I counted 15.7 (grommet 1.2mm included) + 0.6=16.3mm. Is that correct?
I’m not sure about the thickness of color but we can try both 27 and 28 to see which suits us best.
Am I assuming correct.
Without paint, the thickness between both plates is (15.7-1.2)
(thickness of grommet = 1.2mm)
Which means thickness between both panels = 14.5mm.
However when adding paint on both sides,
You have as a total thickness 14.5 + 0.6 + 0.6 = 15.7mm
G = P+F+X+0.4 +0.6 + 0.6 = 14.5 +0.4 + 1.2 = 16.1mm
This would mean you need stud length 28 (tolerance 16,1-16,70mm)
(furthermore, imagine the paint is not that thick as 0.6mm) then you might require length number 27 (15.5-16,10mm)
Or is if with your experience, the paint always enough thick
Your part numbers:
imagine your paint is not thick enough.
It would be easy to have some seals extra,
To make the part sealant.
This gasket adds approximately 1mm of thickness
It can be also easily installed:
See attached drawing.
Med vänliga hälsningar / With kind regards,
Can you please inform me of your thickness of your panels and it’s distances?
Note: you cannot combine in the different series receptacles
So you’ll have to use another receptacle too.
It would be handy to see your drawing with the different thicknesses of both of the panels and also the gap between the panels.
How much measures P =? ; F =?