1.OLDHAMs COUPLING A Presentation by : Akash Sood 0939ME101002SUBMITTED TO :

2. OLDHAMs COUPLINGContentsHistoryDefiningDerivativesPlacingExternal MountsWorkingAdvantages / Dis-advantagesApplicationA Presentation by : Akash Sood 3. OLDHAMs COUPLINGHistory Thecoupler is named for John Oldham who invented it in Ireland, in 1820, to solve a paddle placement problem in a steamship design. A Presentation by : Akash Sood 4. OLDHAMs COUPLINGDefining An Oldham coupler is a method to transfer torque between two parallel but not collinear shafts. A Presentation by : Akash Sood 5. OLDHAMs COUPLINGDerivatives Ithas three discs, one coupled to theinput, one coupled to the output, and amiddle disc that is joined to the first twoby tongue and groove. A Presentation by : Akash Sood 6. OLDHAMs COUPLINGPlacing Thetongue and groove on one side is perpendicular to the tongue and groove on the other.A Presentation by : Akash Sood 7. OLDHAMs COUPLINGExternal Mounts Oftensprings are used to reduce backlash of the mechanism.A Presentation by : Akash Sood 8. OLDHAMs COUPLINGWorkingA Presentation by : Akash Sood 9. OLDHAMs COUPLINGWorkingA Presentation by : Akash Sood 10. OLDHAMs COUPLINGAdvantages Protects driven component by serving as a mechanical "fuse" - aninexpensive replaceable plastic midsection shears under excessload. Protects support bearings by exerting consistently low reactiveforces, even under large misalignments. Electrical insulation Accommodates large radial misalignment in a short length Accommodates much larger angular misalignment then standardOldham coupling Easy installation in blind or difficult installations when through-boresare used Economically priced compared to other couplings with similarperformance characteristics Inexpensive replaceable wear element Low moment of inertiaA Presentation by : Akash Sood 11. OLDHAMs COUPLINGDis-advantages Lower peak torque and torsional stiffness thanstandard Oldham coupling Slightly non-homokinetic transmission (that is,the driven and driving shafts dont move atexactly the same speed throughout onerotation) when angular misalignment issignificant Axial reactive loads exerted on supportbearings when torque approaches maximum Accommodates only a small axialmisalignmentA Presentation by : Akash Sood 12. OLDHAMs COUPLINGApplication Itwas basically invented to connect two parallel non co axial shafts. It is a really good mechanism and transmits the same speed and same direction of rotation. It is not of much importance now as gears are being used. A Presentation by : Akash Sood 13. OLDHAMs COUPLINGA Presentation by : Akash Sood