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1、Lecture 15Lecture 15Gear pump design 1(parts design)TOPICS How gear pump works?Safety mechanism Fitting size&tolerance Representation of gears&spring,etc.TOPICS（continue）How to setup all parameters?Manufacturing technique structure on housing cover Design gears in inventor Modeling design of housing
2、 Modeling design of the cover&other partsHow gear pump works?How gear pump works?Safety mechanismFitting size&toleranceSIZES OF MATING PARTSBasic size,max&min size,toleranceTOLERANCE BLOCK DIAGRAMBasic size,deviation&toleranceHole basis fits systemHoleShaftBasic sizeFitting size&tolerance Clearance
3、fit Interference fit Transition fitShaft basis fits systemHoleShaftBasic sizeFit symbol：50H8Upper deviation：+0.039Lower deviation：0Tolerance:0.039Size of hole：50+0.0390Fit symbol exampleRepresentation of gearsRepresentation of gearsSpur gear definitions and formulasSpur gear definitions and formulasRepresentation of gearsRepresentation of gearsRepresentation of spring How to setup all parameters?Manufacturing technique structure on housing coverDesign gears in inventorUndercut of the gearModeling design of housingModeling design of the other parts