MechMate CNC Router Forum

Go Back   MechMate CNC Router Forum > Structure & Mechanics > 20. Gantry
Register Options Profile Last 1 | 3 | 7 Days Search Today's Posts Mark Forums Read

Reply
 
Thread Tools
  #1  
Old Tue 27 March 2007, 17:04
Sheldon Dingwall
Just call me:
 
Upper limit of weight for Gantry and Y-car assembly

Does anyone have an idea of the upper limit for combined weight for the gantry and y-car including spindles?

Or even how to calculate the limit?
Reply With Quote
  #2  
Old Wed 28 March 2007, 00:13
Gerald_D
Just call me:
 
There is no limit....

There are 3 main factors for this consideration:

1. Acceleration and decel. rates that the operator would be happy with. If you can live with a slowly accelerating gantry and a long stopping distance, then the gantry can have a high inertia or mass.

2. The increased friction on the rails caused by the heavier mass.

3. whether the motor system has the torque to overcome the inertia and friction mentioned above.

You can always accept more mass if you can boost the torque. For a given torque, you can increase mass until the system becomes too sluggish for your taste, or until the friction bogs it down altogether.

Calculating it for a given system is a waste of time. Rather just load dummy mass (bricks, whatever) onto the system and see what it copes with.
Reply With Quote
  #3  
Old Wed 28 March 2007, 08:34
Sheldon Dingwall
Just call me:
 
"Calculating it for a given system is a waste of time. Rather just load dummy mass (bricks, whatever) onto the system and see what it copes with."

I was thinking that might be the best way to go.

Thanks Gerald.
Reply With Quote
Reply

Register Options Profile Last 1 | 3 | 7 Days Search Today's Posts Mark Forums Read

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -6. The time now is 11:15.


Powered by vBulletin® Version 3.8.3
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.