RIVCLINCH - sidler-eg.com

1 Devices and systems for joining sheets and profiles without fasteners6780 2 RIVCLINCH Joining without fastener!What is clinching?Upon clinching, double- or multi-layer joints of sheets and/or profiles are joined form-fittingly and non-positively in a push-button-like cold-forming process. With the RIVCLINCH joining technology, apart from steel and stainless steel materials, also aluminium and othernon-ferrous materials can be joined efficiently and environment-friendly. Furthermore, coated as well as precoatedsheets can be joined without any damage to the on the chosen RIVCLINCH joining tools, round or rectangular joint points joining technologyThe first step of RIVCLINCH joining is to draw the materials to be joined through the punch into the die. As soonas the bottom material touches the die anvil, it starts flowing to the sides and forms a button. After that, the punchmoves back into the initial position and the joined part can be removed.

2 A form-fitting and non-positive joint resultsfrom local advantages at a glance Form-fitting and non-positive joining of sheets and profiles in cold-forming No additional fasteners Low power consumption No thermal load on the joining zone No surface damage to coated workpieces Films or adhesive as intermediate layer possible in most cases No preworking or reworking required Very good reproducibility of the joint Environment-friendly at the workplace since there is no gas or noise emission Minimum maintenance costs Non-destructive testing of the joint possible3 Tailor-made solutionsThe tool kitsThe central component of the RIVCLINCH joining system is the tool kit. It is individually adapted to everyapplication. B llhoff provides different possibilities of integration intoa clinch unit, presses or multistage hand toolsOur comprehensive RIVCLINCH hand tool programprovides you as the user with the possibility to useclinching technology in your business without high investment costs.

3 The program structure allows to findthe right solution for almost every the Modular systems product series, we haveset up a standard clinching program from which we can combine individual clinching tools according to your desired application from different modular systems4 Joining together!Joint point geometryJoinable materialsWith the RIVCLINCH joining technology, apart from steel and stainless steel materials, also aluminium and othernon-ferrous materials as well as hybrid joints with foil or adhesive intermediate layers can be joined. Furthermore,coated as well as precoated sheets can be joined without any damage to the pointFor round points, the workpieces to be joined are formed locally. A form-fitting and non-positive joint results which is also visually pointThe rectangular point results from a combined cutting and forming is particularly suitable for hard materials as well as for stainless of suitability for clinching of different materials depending onthe material thicknessRound pointRectangular pointHigher-strength steel500 N/mm2< Rm < 700 N/mm2 Austenitic, stainless steelStructural steel, aluminiumMaterial thickness, punch side [mm]Material thickness, die side [mm] mmSteel mmSteel mmSteel mmOnly rectangular point tools should be used for austenitic stainless mmSteel mmSteel high-strength, mmSteel high-strength, mmBEAluminium mmAluminium mmSteel mmAdhesive2 x steel design1.

4 Consider accessibility for design!2. Provide for sufficient flange width!4. Preferable direction thick into thin 3. Leave sufficient space for extension of die. First relieve the button from the die (1ststep), then move the C-frame forward (2ndstep)! interference edges!6 Joining technologies a comparisonCorrosion on coated materiallowlowlowlowhighnoneChanges in structure and strengthnonenonenonenoneyesnoneat the joining locationDynamic strengthvery goodvery goodsuboptimalsuboptimalsuboptimalgoodCr ash resistancesuboptimalvery goodsuboptimalsuboptimalsuboptimalgoodSt atic strength:1. Shear tensiongoodvery goodvery goodvery goodvery goodgood2. Pull-out tensiongoodvery goodvery goodvery goodvery goodgoodMethod in combination with adhesionoptimaloptimalpossiblepossiblepo or Edges burrs chipsnonenonenoneedgesnonenoneRequired fastenersnoneself-pierce rivetscrewsnoneadhesiverivetnutswasherst hreadAdditional process stepsnonefeedingfeeding,feeding.

5 Coatedpressingcaulkingscrewingsurfacescu ringCosts per jointvery lowlowvery highvery highhighhighEnergy inputlowlowhighhighvery highvery highEconomic efficiencyvery goodgoodpoorpoorsuboptimalsuboptimalEnvi ronmental friendliness at the workplacevery goodvery goodgoodgoodpoorvery poorHandlingvery easyeasyeasyeasyeasycomplexReproducibili tyvery goodvery goodgoodgoodsatisfactorygoodDependence of resulting jointlownonenonelowhighvery highon surface conditionPre-operationnonenonedrillingdr illingwashingwashingpicklingpicklingClin chingSelf-pierce RivetingScrewingSpotAdhesionrivetingweld ing7 Economic efficiency of the RIVCLINCH joining technologyTotal costs of a joint pointLow investment costs No exhausting devices required (toxic vapours ofspot welding) No cooling water and thus no complex installationrequired No expensive electrical installations for weldingtransformers required Particularly when welding zinc plated steel sheetsand aluminium, very high costs result (figure 1)Low operating costs Low power consumption during operation of the tools No power consumption during idle time (operationwith booster) Low costs for wear parts due to long life of the toolkits (figure 2) No additional power consumption resulting from operation of exhausting devices No cooling water required as mediumNo reworking costs No damage to coating of, for example, zinc platedsurfaces No burn-off as with spot welding and thus no resulting complex re-zinc-plating to avoid undesiredcorrosion (figure 3)Short cycle times Short joining process (approx.)

6 S for forming plusfeed motions depending on feed stroke and designof the used system) High automation level with high numbers of piecesand few personnel possible!Easy handling No expensive highly qualified operating personnel requiredThe primary aim of the clinching technology, apart from providing an up-to-date and innovative fastening technology, is to save production costs. Cost saving results from different factors:The costs of a joining element result from three main factors: Operating costs (current, air, water, exhaustion, ..) Wear parts (tools, electrodes, ..) Costs of additional elements (self-piercing rivet)As an example, a joint of two aluminium sheets was other material combinations such as steel + steel, different weighting can withoutSelf-pierce riveting withResistancecuttingsemitubular rivetspot / joining element ( )Joining parts material: Aluminium sheetClinchingWeldingWeldingWeldingWeldi ngSt 1403St zinc plated St zinc plated mm200180160140120100806040200 Investment Operating costsSteelSteelAluminium Stainless steelzinc coatedcoated350,000300,000250,000200,000 150,000100,00050,0000 Normal range of number of pieces per dieNumber of clinchingpoints until tool changeNumber of clinching pointsuntil tool changeComparison of costs for different joining processesand + + + + + joint that lives up to its promise!

7 Strength parametersDynamic strength of a RIVCLINCH pointCompared to spot welding, the dynamic strength of a clinching point is higher! Through mere mechanical forming without thermal load and accompanying edge zone carburisation, a permanently reliable fastener means that a RIVCLINCH joint point has a longer life than a welding F in kN RIVCLINCH Spot weldingNumberof cyclesto failureRIVCLINCH joiningStatic shear tension strength depending on sheet thicknessesmaterial: steel sheet, tensile strength = ~ 300 point, 5 point, 8 mm3a. Rectangular point diagonallyto the direction of stress3b. Rectangular point longitudi-nally to the direction of stress90 3a3b1, 213bThere are three areas when it comes to strength values:1. Static strength (quasi-static shear and cross tension testing)2. Dynamic strength (swinging load / fatigue test)3. Crash resistance (impact load / impact test)Strength values of clinched joints mainly vary depending on the following factors.

8 Diameter of the clinching point Material type Material thickness Joining direction ( thin into thick / hard into soft ) Geometry of the clinching pointStatic shear tension strength depending on sheet thicknesses23aSheet thickness (mm)Shear tension strength (kN)9 Factors determining the quality of a clinched jointQuality check of the RIVCLINCH jointJoining equipment Design of the joining equipment Type of force generation Static deformation behaviour Dynamic deformation behaviour Kinematics ControlJoining parts Number Materials Material thicknesses Surface condition Geometry Accessibility Joining directionJoining tool Geometry of punch Geometry of die Stripper / holding-downdeviceProcess forces Joining forces Stripper forcesJoining process Alignment Cycle times Environmental effectsTesting the RIVCLINCH jointNon-destructive testing of the RIVCLINCH joint can be realised by measuring the residual material thickness (ST)and the joint point diameter D.

9 Those values are determined in pre-tests for the corresponding application anddocumented in a test report with test report number. By simple measurement of those values at the componentand a comparison with reference data, the quality of the RIVCLINCH joint can be checked without damaging a simple test of the residual material thickness, conventional quicktest gauges, as illustrated, can be used. This way, during production, quality surveillance can be performed in sampling tests without damaging the component which also improves the value-added process of your surveillanceFor clinching, there is a causal relationship between joint quality and the geometry of the joining element. It is therefore possible to estimate the quality of the joint from a visual evaluation of the joining element and bymeasuring geometric DTesting the residual material thickness ST10 RIVCLINCH in actionWe offer the suitable joint for different target groups and are specialised in developing consistent and attractive solutions side by side with shield made with hand toolModular system, hand-held for subassemblies0706 IP hand tool withmulti-axis suspension indoor and gate manufac-turingLarge component dimensions in energy and climatic engineeringas illustrated here can be joined with semi- automated systemsHand-held clinching systems, for example inthe sheet metal industry,optimise your workprocesses 11 The tool kitsAs a standard, tool kits for round points with nominal diameters of 3, 4, 5, 6, 7, 8 and 10 mm as well as forrectangular points with nominal dimensions of mm.

10 5 mm and 6 mm are tool kit is integrated into a clinch unit depending on the application. B llhoff offers many possible combinations, starting from a hand tool with a joiningforce of 25 kN to modular systems with a joining forceof 50 kN to fully automatic systems and special machines. However, integration into presses or multi-stage tools is also : tripartiteRIVCLINCH die SR 503 The diesRIVCLINCH dies comprise a basic die body and individual die segments that are held in position by asteel spring. The individual segments are captively fastened to the basic die body with a safety cage. Thus, the segments cannot fall ring can be divided into 2, 3 or 4 segments. Theselection of the suitable die geometry depends on theindividual over methods with not segmented dieThe RIVCLINCH modular systemRIVCLINCH joining bears the following advantages thanks to the segmented die: Very high pull-out tension values due to improved flow behind the material because the die opens duringclinching and the material can flow to the side.