Wow! From what you started with in the first page of this thread to what you are building now is SERIOUSLY impressive. My hat is off to you. I really appreciate your help with my questions.
I'm going to be building something similar to your first aluminum framed prototype. Ill be using a spin index spindle, SKF 6209 bearings, and probably this Servo (
http://tinyurl.com/nh6j2bo). I'm planning on gearing it to 3:1 only, for simplicity. I'm thinking that should give me enough torque and hopefully get me around the 1400 RPM max speed range. I will be using it to machine mainly 6061/7075 and 1018/1020, nothing too crazy. Most parts will be a couple inches in diameter or less. Anything that is bigger will only be indexing.
- I'm unsure on the calculations needed to get the rotational accuracy I should expect.
- For small diameter (3 inches or less) work pieces, and 2550 oz in of torque (850 oz in peak * 3), will I absolutely need a brake?
- I really love the Gecko products, and all of my builds have Gecko drives. I know you said the G340 didn't meet your requirements, but based on what I'm building, do you think the new G320x will accomplish what I'm after (bearing in mind that my 4th axis will not be anywhere near the Mega and Ultra stuff you are building now, but more so inline with your first aluminum house prototype)