I was wondering if there would be interest on a user-side community project to enhance the SX3 and the X4 spindle and power transmission.
We would design, build, share results, and share enhancements to arrive at one "mature" design.
All project documentation would be made publicly available in common exchange formats including: plans, specs, part numbers, suppliers in different countries, CAD files, all g-code for the manufacturing of any parts, etc.
Here is a first shot at performance objectives in proposed order of priority:
1) Usable speeds from 50 to 30,000 RPM (different sets of pulleys/belts okay)
2) Eliminate vibration
3) Eliminate noise
Here is a first shot at community oriented objectives:
4) Have "one" final design (with versions for the SX3 and X4)
5) Maximize common elements on the SX3 and X4 changes
6) Keep costs of the final retrofit below $1000
7) Use globally available parts and/or materials. If that is not possible, then produce plans to manufacture those parts locally.
Here is a first shot at a list of secondary objectives. These may or may not be met based on whatever compromises we may need to make, but they might influence the design:
8) Spindle lock
9) Power draw bar
10) Maintain the ability to rotate the SX3 head
There are probably a number of implications like the support mechanism for the motor and the seating of the pulleys on both sides would need to be redesigned. The type of pulley/belt used would likely change You probably would need at least 3 sets of pulleys and belts, perhaps in a tree arrangement. The draw bar would need to be modified to at least be self centering. Speeds would probably not be reflected in the machine display. Some additional mechanisms to align and keep aligned the spindle, pulleys, motor and all the assemblies would be critical. You might want a good shield between the spindle/tool/workpiece and your body parts or valuables.
There are a number of complicated things. This is a big project that would greatly benefit from the knowledge and experience of a good size group of people like this one
What do you guys think?