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Requirements.md

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Project Requirements

  • Must display following axes
    • X
    • Y
    • Z
    • W (tailstock / knee)
    • Spindle position / Tachometer / Surface speed
  • Lathe mode
  • Mill mode
  • Surface grinder mode
  • Configurable distance counts per linear axis / per rev
  • Configurable reset counts per linear axis / per rev

Functions for All Modes

  • Toggle linear units between mm / inches
  • Toggle angular units between degrees, radians, grads
  • Incremental distance counts
  • Absolute distance counts
  • Zero all axes
  • Trig calculators:
    • sin, asin
    • cos, acos
    • tan, atan

Functions for Lathe Mode

  • Configurable tool offsets
  • Show tacho in RPM or surface speed (m/min, SFM)
  • Measure taper
  • Radius cutting mode:
  • Ball turning (maybe this is an expansion of IJK mode?)

Functions for Mill Mode

  • Configurable tool length offsets
  • Show tacho in RPM or surface speed (m/min, SFM)
    • Set edge finder / probe diameter
  • Per-axis centre finding (1/2 button)
  • Measure taper
  • Hole pattern calculator (PCD)

Functions for Surface Grinder Mode

¯_(ツ)_/¯

Detailed Lathe Functions

Configurable tool offsets

To set tool offset

Each tool will be touched off and zeroed on a series of linear axes. This permits a drill in the tailstock to be zeroed (as long as the tailstock is not moved, and only the quill is extended). To perform:

Assuming a RH lathe turning tool in tool holder 1:

  1. Press TOOL CALL.
  2. Select tool 1.
  3. Press TOOL SET.
  4. Touch off Z axis from the work (or take a facing cut with carriage locked).
  5. Press Z_0 to set the tool's current Z position in relation to the machine (G53).
  6. Touch off X axis from the work (or take a cut with X axis locked), and measure the work diameter.
  7. Enter the diameter, and DRO will calculate radius (and hence X axis offset from centre line G53).

The turning tool is now set with reference to the carriage position.

Assuming a drill in a taper in tailstock as tool 21:

  1. Press TOOL CALL.
  2. Select tool 21.
  3. Press TOOL SET.
  4. Touch off Z axis from the work.
  5. Press W_0 to set the tool's current W axis.

A single tool may have multiple cutting edges, for example a square 45 degree turning tool used for chamfers has two edges that might be used, one for chamfers towards the chuck and one for chamfers towards the tailstock. Here, using the tool corner for the offset may prove useful.

A single tool may also have multiple cutting edges (such as Tom Lipton's OD turning, OD chamfer, OD back chamfer and internal chamfer, and 90 degree grooving tool). For such a tool, using two separate corners as two separate tools in the library (and two labels on the tool holder) is desirable, especially if the numbers are one after the other.

Radius cutting mode

  1. Set fillet dimensions, either start+end+centre offsets (like G2 XY IJK) or end point and radius (G2 XY R)
  2. Set number of cuts
  3. Move to first cut, crank X axis to zero, and feed Z axis until zero
  4. back out, index next cut
  5. repeat steps 3-4 until complete

Detailed Mill Functions

Hole pattern calculator (PCD)

  1. Set centre XYZ
  2. Set diameter of PCD
  3. Set hole count
  4. Set starting XYZ or starting angle