| |
| Home Page | Mark Forums Read | Today's Posts | My Replies | Classifieds | Reviews | Photo Gallery | Web Links | Share Files | Advertise With Us | Ad List |
| |||||||
| Polls All Polls should be posted here only not in the forums. Please post relevant polls only. |
| | |
| This forum is sponsored by: |
| View Poll Results: Where to mount ballscrews on the gantry | |||
| one ballscrew under the table with the linear bearings on the top of the table |     | 16 | 12.40% |
| One ballscrew under the table with linear bearings on the side of the table |    | 57 | 44.19% |
| Two ballscrews, next to each linear bearing driven by belt |    | 24 | 18.60% |
| two ballscrews, next to each linear bearing driven by individual motors |    | 32 | 24.81% |
| Voters: 129. You may not vote on this poll | |||
 |
| | LinkBack | Thread Tools | Search this Thread | Display Modes |
|
#13
 
02-22-2006, 09:18 AM
| |||
| |||
| Hello. I'm going to get flamed for this but here goes it. I have 1 screw on the side with 2 bearing blocks per side that sit 8" above the table. To reduce racking, I installed a .5" steel plate in the shape of an "I" across the X axis. This extends the bearing blocks a few inches outward to keep it fairly rigid. In fact, pushing on the far side of the X axis (furthest from the Y screw) twists the machine's aluminum frame before any racking can be measured. This setup has worked well so far cutting PCB, plastics, wood, aluminum and steel. If I ever see the need to improve rigidity, I'll add a second screw on the opposite side. Next up and crisscrossing the frame with scaffolding braces. JR  |
|
| | |
| Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | |
| Thread Tools | Search this Thread |
| Display Modes | |
| |
| | |
Linear Mode
