It is around 100 Kg +-10
Tomorrow I'll make quality pictures and I'll take some pictures of few unmounted new parts.
Last edited by DigiSoft; 17-09-2013 at 04:14 PM.
You'll certainly need to keep plenty of torque in reserve with slaved stepper motors otherwise your open to racking. What do you plan to use machine for.?
What pitch screws.?
Last edited by JAZZCNC; 17-09-2013 at 05:00 PM.
YES YES I will be using slaved steppers for X axis. 1 stepper at each side. I use 425Oz 3A NEMA 23 stepper motors. I bought 42V 750W / 15A PSU. I would like to be able to work on steel too. Do you think it would be possible?
Today I ordered steel working table. They will be making T slots in it. I have access to CNC shop with big cnc 2000mm x 2000mm working table. My table will be 1500 x 900mm and around 200KG.
The gantry complete like you said will be around 120kg.
I use RM1605 (5mm pitch / 16mm diameter).
I do not need fast machine. I just want to be stable and precise.
Last edited by DigiSoft; 17-09-2013 at 06:14 PM.
At lower feeds which you'll run for steel and aluminium you'll be probably be ok but they will struggle with higher feeds or heavy cutting conditions.
Personally I'd be looking into small servo's or at least Nema 34 motors and high voltage drives. Even small 400W servos will be fine has they give linear torque so won't restrict machine potential.
The 3Nm motors and low voltage you plan will be very limiting to machine performance has speed increases.! They should handle lower feeds ok but seems a shame to build what sounds like is going to be a very well built and sturdy machine and not be able to exploit it's full potential.!! . . . . That said they will get you started but think you'll probably quickly want to upgrade.
I have made a big progress with my CNC.
The worktable is finished and the construction is welded. It is night so I couldn't make better picture, but in few days I'll post more work progress. Everything is made of steal. Tubes are 80mm x 80mm x 4mm. The worktable is machined from steal.
Overall weight ~ 500KG
Last edited by DigiSoft; 03-03-2014 at 09:58 PM.
That is one hell of a substantial frame and bed, I can see why it weighs 500Kg, great job , pity the pigeon's have shit all down it though
Last edited by EddyCurrent; 03-03-2014 at 10:07 PM.Spelling mistakes are not intentional, I only seem to see them some time after I've posted
ahahahahahah it is not from pigeon. It rolled over on the concrete while we tried to turn it up side down :D
Tidy job but the gantry and supported rails seem quite a bit less substantial than the base and bed, that's not to say it won't perform well.
Next you will have to skim the bed to make sure it's flat.
Last edited by EddyCurrent; 15-04-2014 at 10:19 PM.Spelling mistakes are not intentional, I only seem to see them some time after I've posted
BUILD LOG: New Build - For Your Amusement - MK-2 buildBy Karl in forum DIY Router Build LogsReplies: 11Last Post: 11-06-2012, 07:34 PM