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couple two plates and antisvitation

  • Thread starter Thread starter antoniopf
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antoniopf

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Bye, guys. I have to pair two 3mm plates. I made holes in diameter 4.2 to use screws m4. would you tell me how to mate in such a way that the screws are not loosened by vibration?
 
brakes. glue. hammered on the screw. use rivets or rivets. use self-locking dice. use cracked washers... insomma... skin.
learn how to use the search button....
 
split washers (grover) and serrated are useless if not worsening of the seal. independent tests have been conducted that prove it unequivocally.

The elastic washers, mug or wavy, however, have a small effectiveness.
 
this is not the independent one, but the company that led it is the one that launched the stone in the pond. looking with the same keywords you find a lot of material.
 
we are using them in the steel industry on the shears especially for destinations used not to unscrew the main components subject to shock and vibration. They're more than two years old and they really hold.
 
exxon said:
this is not the independent one, but the company that led it is the one that launched the stone in the pond. looking with the same keywords you find a lot of material.
Click to expand...
thanks, if we take the video for good but it is not true that the nester is worsening, something good does.
I personally do not stand them, I use only self-locking or even braking, the contradado I use only where a screw has to make as a pin for levers that do not need large loads and low precision, having to leave the slow screw to allow the rotation of the parts, the contradado assures the anti-savory.
now I look for some comparison between these washers and braking
 
bip said:
... it is not true that the grover washer is worsening, something good does.
Click to expand...
my statement comes from another test (which I no longer searched...). in that test, instead of subjecting the vibration joint, the same is prompted to traction/transverse compression of the coupled pieces. the result is that the grover increases the distance between the nut and the coupled part, increasing the lever arm and making the seal worse.

After seeing that test, I erased them from the library. .
 
exxon said:
my statement comes from another test (which I no longer searched...). in that test, instead of subjecting the vibration joint, the same is prompted to traction/transverse compression of the coupled pieces. the result is that the grover increases the distance between the nut and the coupled part, increasing the lever arm and making the seal worse.

After seeing that test, I erased them from the library. .
Click to expand...
question and do these not remove the nut from the coupled side? Do they look thicker? or I got it wrong
on the undiscussed estate even if I would like to see an independent test.....if however the screw is subject to these vibrations maybe it is not right solution... .
Hi.
 
If you use a split washer, you must also use a ranella, otherwise the support surface becomes insufficient. the sum of the two thicknesses is greater than one nl for the same diameter. Besides this, the diameter of the nl is that of a standard ranella and are also much more rigid.

As soon as I find time, I look for other documents. if in the meantime someone wants to googlare. . .
 
exxon said:
If you use a split washer, you must also use a ranella, otherwise the support surface becomes insufficient. the sum of the two thicknesses is greater than one nl for the same diameter. Besides this, the diameter of the nl is that of a standard ranella and are also much more rigid.

As soon as I find time, I look for other documents. if in the meantime someone wants to googlare. . .
Click to expand...
You're sure you have to use another washer under a grover because in the video they don't use it... and honestly I thought it wasn't useful in most cases.....
however thickness nordlock for m3 1.8mm grover 0.8mm+(wax0.8mm)=1.6mm comuqnue lower
m20 nordlock 3.4mm grover 3.8mm so it is higher but di0.4mm I do not know what impact it can have; therefore depends on the diameter of the screw, if the thickness is to the advantage of Nordlock or groover... .
Hi.
 
m3?

I didn't say that, but I was referring to carpentry. for couplings under m12 I think more appropriate use of elastic washers (wave or cup).

on the use of the ranella under the grover, it is necessary to specify that the grover does not replace the function of the flat ranella, because its outer diameter is equal to that of the nut contact. if you need the flat ram to distribute the load on an appropriate surface or to compensate for the hole increase for tolerance issues (as happens practically always in carpentry), you are obliged to use both.
 
exxon, a few weeks ago I discovered the north lock. I also invited a company representative to have free samples but he told me that m4 didn't have them. I don't want my use to be overestimated, in addition to the fact that they are expensive.
 
I agree that for "vitines" it is not the best solution. also the cost is prohibitive for smaller sizes, while it is almost negligible for the screws that are sold in boxes for a piece.

for small screws we use elastic wave washers, for intermediate ones the elastic cup washers, then we pass to nl.

p.s. a customer buys clones nl from the cream. it seems to me that they are patented, but if the purchase is regular and documented, I don't think they can be raised responsibility for those who buy, but only to those who sell...
 

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