Author Topic: strengthen z-axis of the classic Zoltar  (Read 5867 times)

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oscar

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strengthen z-axis of the classic Zoltar
« on: February 25, 2013, 10:56:02 AM »
By attaching  the Kress engine the way I did
the z-axis bends in one direction when used.

I found out with heavy using the round holes become slightly oval.

My plan is  to replace the vertical plate by a 12mm thick aluminum plate.
then use the same brackets for the kress motor.



OldRaven

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Re: strengthen z-axis of the classic Zoltar
« Reply #1 on: February 25, 2013, 04:27:37 PM »
Hey Oscar,

I have the same problem.
Also need to strengthen this for my kress.

Peter

oscar

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Re: strengthen z-axis of the classic Zoltar
« Reply #2 on: February 25, 2013, 11:16:20 PM »
I am now cutting and sanding the 12mm alu block.

Without an CNC machine!

I will soon post the result here.

oscar

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Re: strengthen z-axis of the classic Zoltar
« Reply #3 on: February 26, 2013, 04:39:59 PM »





Lets hope it brings the results I expect.

@ Chris : What do I use to glue the bearing to the lowest plate ( CA glue ? )
« Last Edit: February 26, 2013, 04:49:45 PM by oscar »

Chris@home

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Re: strengthen z-axis of the classic Zoltar
« Reply #4 on: February 27, 2013, 08:56:33 PM »
Hello Oscar,

Seems you are having a lot of fun there.... :)
Upgrading the original 2001 first prototype after 13 years of service.

Thats great!

The bottom bearing does not need a seat / support and was self aligning.
Once the driveset is in position and running smooth,
you can add a drop of loctite thread locker to the edge of a bearing and
the bottom plate - if wished.

BTW, check the backlash on your delrin nuts - trapezium screws,
do minimize that with the setscrews and it will work as new.

Enjoy!

-chris-

OldRaven

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Re: strengthen z-axis of the classic Zoltar
« Reply #5 on: October 25, 2013, 10:10:59 PM »
Oscar,

Where did you get the aluminium holders for the fress that are mounted on the backplate?

I could really use those too...   yes yes..  I know. . I can mill them myself..  but I'm to lazy to do that :)

oscar

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Re: strengthen z-axis of the classic Zoltar
« Reply #6 on: October 27, 2013, 08:20:57 AM »
Oscar,

Where did you get the aluminium holders for the fress that are mounted on the backplate?

I could really use those too...   yes yes..  I know. . I can mill them myself..  but I'm to lazy to do that :)

Made them myself.
If you like I can search for the Cad file.

Oscar

OldRaven

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Re: strengthen z-axis of the classic Zoltar
« Reply #7 on: October 27, 2013, 09:41:17 AM »
Hi oscar,

That would be great!

thanx

Peter