Initial Design Check Please

[Gotty101]

thanks for the replies guys.

With regards to the HGH20CA blocks ive found some at a great price but the spec is HGH20CAZOC Very light preload. Or should i go for Z1?
Ive had a look around and this thread said z0 (http://www.mycncuk.com/threads/3711-Hiwin-linear-blocks-HGW-20-CC-what-preload-to-spec)

Thanks again.

Trev

[JAZZCNC]

Stick with Z0 don't need higher preload than this. The HGH20CAZOC are normal grade bearings and will be fine.

[Gotty101]

Hi guys, just an update to say ive not given up. Ive order the Hiwin blocks, and found a source for the rails, screws (1610 and 1605 for the z)

This is where im at, ive not had chance to redraw the lower frame or the cnc bed yet but thats next.

[Gotty101]

I think i may need a few extra idlers in the middle between the two x ball screws at the back.

[Gotty101]

I got home yesterday to a card from parcelforce, so I think my hiwin bearing blocks are here. :)

[vargai]

I have removed this post and already placed to the right thread

[Gotty101]

Hi i just use printscreen and rezize it in photoshop.
With regards to the z axis i have cut a slot in the two plates for clearance. I suggest you open a design thread and ask the guys to give your design the once over before you go to far.

Trev

[vargai]

Thanks, Z axis principle is well documented here, this is just detail issue,
just I want to pick up all the evident or earlier discussed information
I will do my best with the design but have some definite ideas
As soon I have finished I will open the thread. You are right: design modification is much cheaper than re machining.
BR
István

[Gotty101]

Hi guys, well my Hiwin blocks have arrived. Ive ordered my ball screws now as i know the main dimensions are not going to change.


This is my idea for a bed, it will be a box as im going to be running suds. The bed can be raised and then bolted to the uprights to keep it in position.
Im going to order the hiwin rail next. I know ive got the FK bearings back to front, but can they be mounted this way? The only reason im looking to mount them this way is if i mount them the normal way im wondering if it will push the pully to far out to line up with the pully on the stepper motor.




Trev