APPLICATION TECHNOLOGY


Revolutionising stud welding


Heinz Soyer Bolzenschweißtechnik GmbH has recently launched the innovative BMS-9 stud welder and the PS-9 stud welding gun which will be officially presented at the international trade show Fastener Fair Stuttgart in February.


H


einz Soyer states that the small, lightweight and portable stud welding system represents a new generation of stud welding equipment and offers many interesting technical features.


For the first time, it is possible for operators to view all


important operating conditions with the help of an LED display using the traffic light principle on the PS-9 welding gun. The green LED display on the welding gun tells the operator when the stud welding device is ready and can be operated. Faults are signalled using the red LED display. The circular LED display shows the current operating status from any angle. This makes the


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operator’s job far easier and also helps to increase the quality of the weld joints, thus offering maximum functionality and ease of use.


Resolve loose hardware and assembly issues PEM® surface mount and broaching fasteners designed specifically for use with PC boards provide ideal


solutions to satisfy component-to-board, board-to-board, and board-to-chassis attachment requirements. P


ennEngineering highlights that all of its surface mount and broaching fasteners install permanently, reduce the need for loose hardware, eliminate secondary operations, and simplify and streamline the production process.


surface mount fasteners (threaded or unthreaded nuts and standoffs, captive panel screws, and R’ANGLE®


(internally threaded nuts, threaded or unthreaded standoffs, threaded studs, panel fastener assemblies, and spring-action SNAP-TOP®


The families of PEM hardware for PC board applications include ReelFast® right-angle fasteners), broaching fasteners


standoffs), broach/


flare-mounted standoffs (offering greater pullout performance), and SpotFast® clinch/broach mount fasteners (for joining metal to boards or plastic panels). ReelFast®


fasteners mount on PC boards in the same manner and at the same


time as other surface mount components prior to the automated reflow solder process and simply become another board component. Broaching fasteners install into all types of PC boards and aluminium, acrylic, casting, or polycarbonate components and create a firm, interference-type fit resistant to rotation. Detailed specifications (Bulletin K) and free part drawings (PEM CAD Library) for all these RoHS-compliant fasteners can be accessed online.


152 Fastener + Fixing Magazine • Issue 67 January 2011


Kicking transmission rings into shape


Rotor Clip Company Inc, a manufacturer of retaining rings, hose clamps and related products, employs a specialised wire- forming process in the manufacture of constant section retaining rings for use in automotive transmissions.


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hese rings (Rotor Clip designations UMI, UHO, and USH) are coiled into a slightly elliptical shape which compensates for the plastic deformation that will occur during installation. Once installed, these rings


‘kick-in’ and assume a more traditional circular shape which Rotor Clip says contributes to: • Allowing the parts to clear the bore much more easily due to roundness.


• Higher load capacity due to increased groove contact. • Maximum clearance for assembled part to pass through the installed part.


The ‘kick’ to the parts is most exaggerated at the gap of


the part when it is installed. This allows for easier removal using standard installation tools since the exposure of the gap is increased.


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