MK1 Steel router build log 1500x800x200

[driftspin]

Today i did some rigidity testing.

My findings are Y and Z direction are much stiffer than the X direction.

Because of a design decision to have the x ballscrews near the top of the bed there is a quitte long linkage bar to the ballnut.

In the design is a linkage bar of a 70x5 mm strip 200mm long.

I under estimated the forces a bit.
The strip twists under x direction forces.
One can see the ballscrew flex a little too as a result of the week linkage.

Result is about .4mm of flex at 200n of force when the z is almost fully extended.

About 0.04mm ish at 20n of force.

So the first upgrade is identified before the first part is produced :-)


Grtz Bert.

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