My first ever built CNC router.

[driftspin]

No that's the case with this design and it will restrict the machine rather than make it better unless the whole gantry is re-designed to account for it.!

I've said this several times now but there is very little difference between the two methods in real world use depending on gantry design. The type and design of machine/gantry is a better selector for which method is best.

Hi JAZZCNC.

I will study this one,

I Always thought mounting the horizontal and vertical bearingblocks on the 4 corners of a single piece of rigid plate would always beat any other setup and would result in the most stif setup.

No influense from flex there.

The flex in the moving zplate could be made less by putting on 2 big motor mounts using round type spindle motormounts.

In this case the spindle motor is square which makes that one a bit easier.

I would have thought having a bigger lumb of metal (rail rizers, square rails, z plate, motor mounts, bolted to the spindle would lessen the vibrations.


So I have something to think about.

It is good to have al these experienced guys here.


Grtz Bert.




Verstuurd vanaf mijn SM-A505FN met Tapatalk

[JAZZCNC]

Hi JAZZCNC.

I will study this one,

I Always thought mounting the horizontal and vertical bearingblocks on the 4 corners of a single piece of rigid plate would always beat any other setup and would result in the most stif setup.

No influense from flex there.

The flex in the moving zplate could be made less by putting on 2 big motor mounts using round type spindle motormounts.

In this case the spindle motor is square which makes that one a bit easier.

I would have thought having a bigger lumb of metal (rail rizers, square rails, z plate, motor mounts, bolted to the spindle would lessen the vibrations.


So I have something to think about.

It is good to have al these experienced guys here.


Grtz Bert.




Verstuurd vanaf mijn SM-A505FN met Tapatalk

Like I say it depends on the design but in most cases the difference is negligible and other areas of the machine often overlooked will have a bigger impact.
In this design, the difference between losing Z-axis travel and raising the gantry to regain it will far outweigh any benefits that stiffening the front plate might make.
Also, it's a mistake to think that the rails stiffen the plate because they don't to any great degree. Plus the weight of the longer front plate and rails have a negative effect in that they require more power to give the same acceleration which is important in a Z-axis.! . . . these are the little things which are often overlooked but can have a big impact on performance.!