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ADM Activity 4.2.1

CNC Mill Anatomy, Safety, and Coordinate Systems

Identify CNC mill systems, hazards, machine coordinates, work coordinates, program zero, and safe setup practices.

Back to Unit 4Learning StepsStudent TaskWhat You Submit
Learning targets

Today You Will Learn To

  • Identify the DMC2 Mini milling system, Mach3 control interface, axes, spindle, tool, table, workholding, and emergency controls.
  • Distinguish Mach3 machine coordinates from the active work coordinate system used by the Fusion setup.
  • Complete the teacher-approved reference, jogging, zero-setting, program-loading, feed-hold, stop, reset, and dry-run sequence.
Manufacturing context

Why This Matters

The DMC2 Mini is operated through Mach3. Students must understand the physical mill, Mach3 screen controls, machine coordinates, work coordinates, program zero, tool position, workholding, and emergency controls before any code is loaded or motion is enabled.

Learning sequence

Learn Before You Build

Complete these steps in order. Record the requested notes or evidence before moving to the graded activity.

5 min

1. Identify your assigned machine path

Record whether the lesson uses the DMC2 Mini with Mach3 or a specific FoxAlien model. Do not mix controller procedures.

15–20 min

2. Read the correct machine documentation

DMC2 teams use the official Mach3 manuals and classroom DMC2 procedure. FoxAlien teams open only the manual matching the exact assigned model.

20 min

3. Observe the teacher demonstration

Watch startup, emergency stop, axis identification, jogging, workholding, work-zero setup, program preview, dry run, shutdown, and fault response.

15–20 min

4. Complete a no-cut controls check

Identify controls and coordinate displays without a cutting tool contacting material.

Detailed activity procedure

Complete the CNC Machine Orientation and No-Cut Readiness Check

  1. 1
    Record the assigned machine name, exact model, controller, spindle-control method, expected file type, and teacher-approved post-processor path.
  2. 2
    Locate and identify the frame, spindle or router, collet or tool holder, cutting tool, worktable, workholding, X/Y/Z axes, limit or home devices, controller, power controls, and emergency stop.
  3. 3
    Mark the machine work envelope, moving-axis hazards, pinch points, rotating-tool zone, chip zone, and operator position.
  4. 4
    Identify the controller displays and controls used for position, jogging, program loading, preview, start, hold, stop, reset, feed override, spindle control, and single-block operation when available.
  5. 5
    Distinguish machine coordinates from work coordinates. Explain how the Fusion setup origin must match the work zero established at the machine.
  6. 6
    Complete the teacher-approved startup and machine-reference procedure. Do not use a homing command unless the assigned machine is configured and approved for it.
  7. 7
    Jog one axis at a time under direct supervision. Record the positive X, Y, and Z directions and verify that the displayed movement matches the physical movement.
  8. 8
    Inspect and demonstrate the approved workholding method with no cutting operation. Confirm that clamps, fasteners, and fixtures remain outside the planned toolpath.
  9. 9
    Load a teacher-approved no-cut program. Verify units, coordinate mode, work offset, program extents, starting point, depth, and final position in the controller preview.
  10. 10
    Complete a raised-Z, spindle-off, or other teacher-approved dry run at reduced feed. Use single block or feed hold as directed.
  11. 11
    Practice the response to an unexpected motion, wrong direction, wrong coordinate display, loose stock, or program mismatch.
  12. 12
    Complete the shutdown and cleanup procedure and submit the no-cut readiness record.
Required checkpoints

Stop and Verify Before Moving On

Checkpoint A — Machine identified

Exact model, controller, spindle method, and file path are recorded.

Checkpoint B — Coordinates verified

Axis directions and the difference between machine and work coordinates are demonstrated.

Checkpoint C — No-cut readiness

Program preview, dry run, stop response, and shutdown are completed safely.

Safety and process control

Required Operating Habits

  • Use only teacher-approved files, tools, stock, speeds, feeds, and procedures.
  • Preserve the last verified working file or code version.
  • Stop immediately for unexpected motion, unusual sound, vibration, loose workholding, tool damage, or an unclear condition.
  • Do not operate the CNC mill without the required certification, permission, and supervision.
  • Record failed trials, defects, and interventions honestly.
Quality check

Before You Submit

  • Axes and origins are labeled from the machine’s actual reference.
  • The work envelope is clear before motion.
  • No student reaches toward a moving spindle or unsecured workpiece.
Student deliverables

What You Submit

  • CNC mill anatomy diagram
  • Coordinate-system diagram
  • Hazard and control table
  • Completed preflight and safe-state check
  • Coordinate practice results
DMC2 Mini control standard

Mach3 Operating Boundary

Mach3 interprets the NC program and commands the DMC2 Mini axes. Students may not change ports, pins, motor tuning, soft limits, homing, spindle, or machine-profile settings.

The active Mach3 profile, machine units, axis directions, work offset, tool, stock, and spindle-control method must match the approved Fusion manufacturing setup.

  • Load only teacher-approved .tap files.
  • Never zero an axis until the teacher-approved work-zero procedure is complete.
  • Use Feed Hold to pause controlled motion and the emergency stop for an immediate hazard.
  • After any reset, verify the machine state, program line, work zero, tool position, and safe restart point before continuing.
Outside learning resources

Official References and Videos

Use these resources for learning and verification. Machine operation must still follow the classroom procedure and teacher direction.

Official Mach3 Product Manuals

Open the Mach3Mill installation/configuration guide and Mach3Mill usage guide used by the classroom DMC2 Mini.

Open External Resource ↗

CNC for Beginners: Workholding Basics

Official Autodesk Fusion video on securing stock, reducing setups, and preparing a machine safely.

Open External Resource ↗

Official FoxAlien Manuals and Drivers

Open only the manual matching the exact FoxAlien model assigned by the teacher. Controller, homing, spindle, and post-processing steps vary by model.

Open External Resource ↗
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