After creating the master sketch and piston head in part 1 of this lesson we will move onto modelling the controlling arm and crank shaft in the Part Design workbench in FreeCAD, again with reference back to the master sketch. This will allow to complete our modelling and move onto the assembly.
In this 4 part lesson we use FreeCAD to model a piston head, connecting rod and crankshaft in the Pat Design workbench an assemble and animate those in the A2 Plus assembly workbench as though they were moving in an engine. The A2 plus workbench will allow us not just to connect the individual parts but allow simulating the movement allowing them to move in a mechanical motion together. We will then move on to scripting, animating the parts making them move together. From lesson 2 we learnt about master sketches and using those in the part design, we are going to be utilising these in in this workflow both in the modelling and the a2plus assemblies.
In the previous part, part 1 we will first draft the master sketch in Free CAD's sketcher to create a simplified version of the mechanism at it's lowest position and them in same video model the piston head using revolves, datum planes, pads and pockets. We will learn how easy it is to constrain these parts using master sketch throughout to keep our constraints neat and tidy
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Lesson 3.1 (a) Retrospective and optimisation of Piston Crank Shaft Assembly
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Lesson 3.3 Model a Piston Crank Shaft Assembly Animation in Part Design A2Plus
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