CNCCMV2/Overview
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Key Performance Specifications
- X Axis Travel Range = 20cm
- Y Axis Travel Range = 20cm
- Z Axis Travel Range = 5cm
- Step Motor Torque at 12VDC = 3.2kg-cm
- Spindle Max Rotation Speed = 22600rpm no-load
- Spindle Motor Torque at 24VDC = 88.5g-cm at max efficiency
- Workpiece Holding Mechanism = Linear Bolt and Tensioning Nut
- For Prototype II, define goals based on study of industry standards. Include desired precision + accuracy + speed.
- Minimum step size for each axis plus variance
- Repeatability of motion (drift) (determined by going to certain locations a large number of times)
- Minimum spacing between traces (determined by minimum allowable size of bit + precision)
- Minimum trace size possible
- Goal: repeatability is as good as step size - ie, all inaccuracy is negligible compared to step size, and zero backlash at all practical milling speeds.
- Define practical milling speed range based on substrate
Key Design Specifications
- Step Motor Axis Drive
- Rotary-to-Linear Motion Converting Stainless Steel Leadscrew and Wear-compensating Leadscrew Nut
- Anti-friction Bronze Sleeve Bearings
- Precision Stainless Steel Axis-Supporting Shafts
- Versatile Holding Platform with Magnets
- Brushed DC Motor Spindle Drive
- Precision Stainless Steel Spindle Shaft
- Computer to Microcontroller to Stepper Driver Electronics Pathway
- Gcode Streamer to Gcode Interpreter Software Pathway