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Dimensions of Rivet
The main dimensions of a
rivet include diameter of rivet, length of rivet, diameter of the head
of rivet and depth of the hole of rivet. In other word, the dimensions
of rivet are essential according to the need of costumer and the
application of rivet.
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Length of Rivet:
The length of rivet is
defined based on the thickness of segments and the type of body of
rivet. In solid rivets, the length of rivet is equal with the thickness
of segments plus half of the diameter of rivet. In semi-solid or hollow
rivets the length of rivet is equal with thickness of segments plus 0.65
of diameter of the rivet.
Is some special cases
which the end of rivet should take a particular shape, the extra length
of rivet should be defined by required tests.
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Note:
The length of rivet in
ordinary rivets is the distance between the lower surface of the head
and the end of rivet but the length of round-head rivets is the distance
between the top point on the head and the end of rivet.
In the catalogues of
Parch Saz Co. and also in this website, the length of introduced rivets
is sometimes defined according to the thickness of segments.
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Diameter of the Hole:
The diameter of the hole
should be a little more than the diameter of rivet to place the rivet
into the hole easily. Of course this loosing is limited because the
rivet should have friction and connection with the hole after riveting.
Parch Saz Co. produces
rivets with the real diameter less than their registered diameter and
the real diameter of hole should be equal with the registered diameter
of rivet. The improper diameter of hole may bring various problems such
as weak connection of bent body for rivet in thick segments and deformed
end of rivet.
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Depth of the hole for
riveting:
Rivets are usually made
hollow to have an easy riveting but when the hollow rivets have not
enough strength, the semi-solid rivets are better because these rivets
have enough volume in the cut surface place. So the depth of hole should
be enough to have an easy riveting and also to have enough cut
resistance of rivet. For this purpose we recommend that the depth of
hole for semi-solid rivets should be equal with registered diameter of
rivet but the place of segment cut should not be placed in the hollow
part of rivet while riveting low-thick segments.
پرچ _ میخ
پرچ _ قطعه محوری _ لنت ترمز _ کلاچ _ آلومینیومی _ مسی _ فولادی _ ایران _
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