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goscommons / CNC-Plasma-Table

An open source CNC torch table for metal cutting
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Product Backlog Documentation for a Kit design based on the current CNC prototype #31

Open jurra opened 6 years ago

jurra commented 6 years ago

Here we document all the features, improvements and ideas for the new kit design. We are trying out Zenhub to use the scrum workflow.

The backlog may include sketches, ideas, and specific tasks as well.

JannesHN commented 6 years ago

My idea of a kit of the CNC plasma cutter is that it only contains (relatively) small essential components. Parts that we can buy in bulk, such as specific stepper motors, the microprocessor, the small elements in the gantries. The rest, the bigger parts such as the frame beams and rods for the x and y axis should be bought locally by the users.

vinaybhajantri commented 6 years ago

Hey all, please see the general specifications list based on the small scale CNCs in the market. We should be able to determine these for our CNC too.

Note: I have already put sample values as an example

  1. Standard workable area: 3,850 mm
  2. Travelling capacity X axis: 3,850 mm without processing of the ends of profile
  3. Travelling capacity Y axis: 350 mm
  4. Travelling capacity Z axis: 280 mm
  5. Fast feed Y - Z: max. 30 m/min.
  6. Fast feed X axis: 50 m/min.
  7. Positioning accuracy: ± 0,1 mm
  8. Spindle speed: 1-24,000 r.p.m.
  9. Power output router spindle: 7,0 kW S1 with constant feedback torque control
  10. Tool support for 5 tools
polemidis commented 6 years ago

Hey man, are we still talking about the Plasma? Sorry maybe I lost some episodes, have we transition to Router? :)

On Mon, Jul 30, 2018 at 10:39 AM Vinay Bhajantri notifications@github.com wrote:

Hey all, please see the general specifications list based on the small scale CNCs in the market. We should be able to determine these for our CNC too.

Note: I have already put sample values as an example

  1. Standard workable area: 3,850 mm
  2. Travelling capacity X axis: 3,850 mm without processing of the ends of profile
  3. Travelling capacity Y axis: 350 mm
  4. Travelling capacity Z axis: 280 mm
  5. Fast feed Y - Z: max. 30 m/min.
  6. Fast feed X axis: 50 m/min.
  7. Positioning accuracy: ± 0,1 mm
  8. Spindle speed: 1-24,000 r.p.m.
  9. Power output router spindle: 7,0 kW S1 with constant feedback torque control
  10. Tool support for 5 tools

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jurra commented 6 years ago

For now lets just keep the current specifications we have in the prototype and put them in the readme. Does it makes sense? This is Plasma, yes. @vinaybhajantri just pointed to an example on how to present in our documentation the machine specifications.

jurra commented 6 years ago

restructuring product backlog documentation:

I found many comments in separate issues, that can all be gathered here Maybe this could also go on a seperate markdown file in the root folder of the repository

Target requirements for CNC table

To be able to have clear cut pieces. The variables that affect that is a) Amperage (but for my low end plasma cutter is at 40Amps. It doesnot go more anyway. Ideally for 1/4" we would need 65Amps) b) Speed c) Cutting height d) Piercing height

Fabrication requirements

The whole machine should be able to be assembled on site. This means using stockparts, machining and fastening with the leaast amount of different tools.