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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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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 whole 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 attach 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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c select the whole axis to so for this whole axis now we have to move it to the this end
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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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Now I will switch to the isometric and switch to the assembly
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Now I will again switch to the assembly 4 and insert crank and this way I will give crank
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L02 and I will insert. I will make it with a crank not with a shaft because I have already inserted my crank so
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I will select crank 01 whole axis so now it is perfectly overlapping now we will give
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the distance 138 and now if you see our UCS so in y direction we want to rotate it not
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Y around the X okay and click on OK now we will insert one more crank so I will
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switch to the assembly and 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 why sometime I get confused with these UCS and I will say OK now we have
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perfectly assemble the three cranks now at the end we will assemble this shaft so
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I will go to the insert click on the shaft and I will QLIM claim shaft L02 and I will
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insert it now to whom I wanted to make the relations I wanted to make relation
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with this crank L4 and here I will select whole axis one and one let's see
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what happen if I select whole axis two okay and I will say apply now I will
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save it so you have seen that how we have did the crankshaft assembly in a free cat
