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Force-measurement device for a system for crimping an element on a part

一种部件、元件的技术，应用在用力实施装配的压接装置领域，能够解决昂贵、难以实现等问题

Active Publication Date: 2018-01-26
BOLLHOFF OTALU SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Furthermore, force measuring devices using piezo cells are very complex devices, which are difficult to implement and are therefore expensive devices compared to the price of conventional crimpers

Method used

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  • Force-measurement device for a system for crimping an element on a part
  • Force-measurement device for a system for crimping an element on a part
  • Force-measurement device for a system for crimping an element on a part

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Experimental program
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Embodiment Construction

[0027] There is a need to provide a force measuring device, suitable for force-assisted crimping devices, which is capable of measuring peak forces in a reliable and efficient manner.

[0028] Existing force measuring devices utilizing piezoelectric cells are bulky and not portable. Furthermore, this technical solution is not suitable for the measurement of peak forces, in other words forces obtained in a very short time. The kinematics associated with crimping are actually quite fast. The drawbar of the crimper goes from idle to applied force in less than a second. Thereby, a "shock" effect is exerted when a force is exerted on a non-variable force unit, such as a piezoelectric unit of a measuring device. This "shock" effect can skew force measurements and affect their reliability.

[0029] In order to provide a reliable and accurate measurement of the peak force exerted by the assembly equipment of the components to be crimped, it is advantageous to use a force measuring ...

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PUM

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Abstract

The invention relates to a device for measuring (10) a force applied by an installation apparatus (20) provided with a threaded rod (21) having an outer or inner thread, which includes: a hydraulic chamber (11) including a fluid (11'); a piston (12) configured to slide inside the hydraulic chamber (11); a threaded connector (13) attached to the piston (12), the threaded connector (13) having a thread configured so that the threaded rod (21) is screwed onto the threaded connector (13), so that the threaded rod (21) can impose an axial force (Fa) on the piston (12) driving a travel of the piston(12), in the hydraulic chamber (11); a pressure gauge (14) communicating with the hydraulic chamber (11), configured to measure a pressure (P) inside the hydraulic chamber (11) created by the axial force (Fa) applied to the piston (12) by the threaded rod (21).

Description

technical field [0001] The invention relates to the field of crimping devices for nuts and studs to be crimped on components, in particular crimping devices for force-applied assembly. It is an object of the present invention to provide a device for measuring the force applied by such a crimping device. Background technique [0002] Crimping is a simple method widely used to assemble two parts. A crimping device or crimping machine for a nut or stud to be crimped allows the screwing, crimping and unscrewing operations of the nut or stud to be performed. [0003] Some crimping machines perform the crimping of nuts or studs by performing the assembly operation with force. The value of the force to be applied is previously defined at the position of the crimping machine according to the application and the part to be crimped on its support. In general, force values ​​range from 3.5 kN to 40 kN and may notably be as high as 60 kN for the usual case. [0004] The force previo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L5/24G01L1/02
CPCG01L1/02G01L5/24G01L7/166H01R43/0486
Inventor D.马切拉尔多J.加尔加略C.马特勒
Owner BOLLHOFF OTALU SA