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Method for determining clamping force for riveting

A clamping force and riveting technology, used in force/torque/work measuring instruments, instruments, measuring devices, etc., to solve problems such as inability to measure the original connection

Active Publication Date: 2018-05-04
BAYERISCHE MOTOREN WERKE AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the measuring devices known from the prior art, it is in principle not possible to measure the original connection, since always a part of the measuring device, for example a measuring disc, often has to be clipped together into the connection to be checked.

Method used

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  • Method for determining clamping force for riveting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The rivet shown by way of example in the figure is a blind rivet 10 by means of which the first component 12 and the second component 14 are connected to one another. Blind rivets 10 are produced in a known manner using blind rivets 16 : blind rivets 16 are passed through aligned holes in the two components 12 , 14 and the respective components 12 , 14 are pressed by pressing the rivet head 18 of the blind rivet 16 . together. The shank of the blind rivet 16 protruding from the rivet head 18 is then pulled out counter to the direction of insertion with blind rivet pliers or another suitable tool, which leads to deformation of the blind rivet 16 , that is to say, to the blind rivet 16 in the second component. The rear of the hole of 14 is upset and thus flared. The portion of the blind rivet 16 protruding behind the hole of the second member 14 is called a rivet header 20 . At the end of this process, the shank breaks at the intended breaking point inside the rivet bod...

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PUM

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Abstract

The invention relates to a method for determining the clamping force of a riveting, in particular a blind riveting, wherein the riveting is formed by a rivet having a rivet head and a deformed rivet head, the method comprising the steps of applying a torque onto the rivet; and determine the torque, especially the breakaway torque, of the rivet.

Description

technical field [0001] The invention relates to a method for determining the clamping force of a riveting joint. Background technique [0002] Rivets are mainly used for the non-detachable connection of sheet metal parts. Compared with screws, rivets have the following advantage: It is not necessary to machine threads in the components. Unlike conventional riveting, in the case of blind riveting only access to the components to be joined is required from one side for the joining process. [0003] Determining the clamping force for riveting, especially blind riveting, is important for evaluating the joint strength and monitoring the quality of the riveting, especially in series production. [0004] In principle, a form-fitting riveting can be visually detected by means of the deformed rivet head. However, the quality of the riveting, ie the actual strength, can only be determined on special test benches. In principle, however, the original connection cannot be measured wit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L5/00G01L3/00
CPCG01L5/0038B21J15/28
Inventor J·瓦格纳F·莱明格
Owner BAYERISCHE MOTOREN WERKE AG