Clinch bolt offers the best of both worlds
An
Arnold Umformtechnik product story
Edited by the Engineeringtalk editorial team
Feb 20, 2004
The old saying "time is money" has prompted the engineers at Arnold Umformtechnik to develop a fastening element which has never been seen before.
The old saying "time is money" has prompted the engineers at Arnold Umformtechnik to develop a fastening element which has never been seen before.
Connections which can be released are normally made by means of threaded parts, like screws, bolts and nuts; permanent connections are made by welding, gluing, joining, or riveting.
But now a single fastening element that can provide a releasable connection, a permanent connection or a combination of both has been developed at Arnold Umformtechnik.
The ATP Arnold TriPress is a very versatile clinch bolt, the shank of which has a trilobular (triangular) shape.
Depending on the load to which the connection is subjected, the shank can either be given a longitudinal knurl, or have lateral grooves, or a combination of both.
After clinching the shank the torque and clinch strength is considerable, in most cases exceeding the break moments of a conventional fastening element.
For turning a permanent connection into a releasable connection there are two variants: one with a centre collar or a shank with a thread connection.
Both versions allow the user to attach further component parts by using a nut after clinching the stud in a normal way.
There are many applications in which this fastener can be used.
These include applications in generator or electric motor casings, and for connecting plastic parts and aluminium sections together.
The cost-effectiveness of such fasteners results from minimum clinching times (10% compared with screwed connections) and simple and reliable handling.
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