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Hello Friends welcome to FreeCAD tutorial and in this tutorial we will do Crankshaft assembly
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in FreeCAD with the help of assembly 4 workbench and I will show you from the scratch how you can
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do it with the help of assembly 4 so I will close this and I will create a new file switch to the
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assembly 4 and i will save this file i will give it name
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so it is a good practice to open the file so i will open my both the file now
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i will open my assembly
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so my assembly is active now i will create a new assembly and i will go to my shaft and
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here i insert axis so i will select this edge go to create a new whole axis so one axis
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has been created you can see that similarly I will select the other edge
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and create a new hole axis now I will switch to the assembly and I will
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insert my shaft so I will name off the link I can say
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shaft L01 and I will insert it so you can see that my shaft has been inserted
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in assembly and from here I will give it link to the parent assembly and I will
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keep the rest of the things as it is and I will say ok
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ok so I will say ok now we will insert our crank I will again go to the insert part and I will
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give the name of the link crank 01 and I will insert it so you can see that my crank has
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been inserted but this crank having no any relation with the shaft so we will
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assign the relation so here on attached to option I wanted to give relation with
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the shaft so I will select the shaft and I will select the whole axis one let's
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see select the whole axis too so for this whole axis now we have to move it to the this
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end so here on the z direction I will give the distance to the 64 plus 138 which is 202 this dimension which we can view here so
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while making the mate just make sure that how much you are moving if we have a dimensions
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written or our length width and height of the part which you are going to assemble that is good now
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I will switch to the isometric and switch to the assembly now I will again
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switch to the assembly 4 and insert crank and this way I will give crank L02
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and I will insert now I will make it with a crank not with a shaft because I
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have already inserted my crank so I will select crank 0 1 whole axis so now it is
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perfectly overlapping now we will give the distance 138 and now if we see our UCS
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so in y direction we want to rotate it not y around the X okay and click on ok
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now we will insert one more crank so I will switch to the assembly and
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insert and click on the crank and I will you name it crank L04 and I will insert it now here you can see that
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distance now you have to give so first now I will make relation with my this
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crank crank L2 whole axis 1 and whole axis 1 now we know that total length is
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a 138 so in Z direction I will give the 138 now I will rotate it
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so for the rotation I will select y axis not y sometime I get confused with this UCS
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and I will say ok now we have perfectly assembled the three cranks now at the end we will assemble
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this shaft so I will go to the insert click on the shaft and I will QLIM claim
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shaft L02 and I will insert it now to whom I wanted to make the relations I
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I want to make relation with this crank L4 and here I will select whole axis 1 and 1
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Let's see what happens if I select whole axis 2. Okay. And I will say apply
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Now I will save it. So you have seen that how we have did the crankshaft assembly in a free cat
