Proper nozzle alignment is critical for achieving high-quality laser cutting results. A misaligned laser beam can lead to excessive dross, rough cutting edges, unstable piercing, and increased nozzle wear.

The BOCHU MCD100 Manual Center Device is designed to simplify beam centering and improve cutting consistency. This guide explains how to perform focal position calibration and beam centering during first-time use.

Why Use the BOCHU MCD100?

The MCD100 allows operators to visually inspect and adjust the laser beam position without relying on traditional tape-shot methods. The device provides real-time feedback, helping users quickly identify beam offsets and accurately center the beam within the nozzle.

Benefits of Proper Alignment

• Improve cutting quality
• Reduce dross and burrs
• Ensure stable assist gas flow
• Reduce nozzle consumption
• Minimize production downtime
• Improve cutting consistency

Step 1: Focal Position Calibration

Important: Focal position calibration must be completed before using the MCD100 for the first time. This process establishes the correct reference position for beam centering.

1. Position the Device

Place the MCD100 under the cutting head.

Align the red dot pointer with the center hole of the device and power on the unit.

This ensures that the system starts from the correct reference position.

2. Move the Cutting Head

Using the wireless remote controller, trigger the cutting head to move downward until it reaches approximately 1 mm above the MCD100 window.

The device is now ready for calibration.

3. Observe the Beam Pattern

Watch the display screen carefully.

A properly calibrated focal position will produce:

• A concentrated beam spot
• Stable beam image
• Consistent beam position even when the device is moved slightly

If the beam appears scattered or unstable, calibration adjustment is required.

4. Adjust According to Offset

The MCD100 provides visual feedback for beam offset correction.

Large Offset Adjustment

When the beam deviation exceeds approximately ±5 mm:

• Perform coarse adjustment
• Gradually move toward the center position
• Continue monitoring the display until the beam becomes stable

Small Offset Adjustment

When the beam deviation is within approximately ±2 mm:

• Perform fine adjustment
• Optimize the focal position
• Verify beam stability before proceeding

Once the beam remains concentrated and stable, focal position calibration is complete.

Step 2: Beam Centering

After calibration, the next step is centering the laser beam within the nozzle.

1. Set the Focus Value

Set the cutting head focus to the previously calibrated value.

For example:

Focus Position: -10 mm

Then move the cutting head to the 1 mm working position.

2. Adjust the XY Centering Screws

Observe the interface displayed on the MCD100.

Manually adjust the X-axis and Y-axis centering knobs on the cutting head.

The display provides real-time feedback during adjustment.

3. Monitor Nozzle Status

The software uses color indicators to simplify alignment.

Yellow Nozzle Outline

Yellow indicates:

• Beam is not centered
• Further adjustment is required

Green Nozzle Outline

Green indicates:

• Beam is centered successfully
• Alignment is complete

Continue adjusting until the nozzle outline changes from yellow to green.

4. Complete the Process

Raise the cutting head after centering.

The MCD100 will automatically return to its initial state.

The beam centering process is now complete.

Common Alignment Issues

Beam Remains Yellow After Adjustment

Possible causes:

• Incorrect focal calibration
• Excessive beam offset
• Mechanical adjustment range reached

Recheck focal position calibration before repeating beam centering.

Beam Image Appears Unstable

Possible causes:

• Incorrect head height
• Dirty protective window
• Optical contamination

Inspect the optical path and repeat calibration if necessary.

Best Practices

To maintain optimal cutting quality:

• Check beam centering regularly
• Re-align after nozzle replacement
• Verify alignment after collisions
• Inspect protective lenses for contamination
• Perform calibration whenever optical components are serviced

Conclusion

The BOCHU MCD100 Manual Center Device makes laser beam alignment faster, safer, and more accurate than traditional methods. By completing focal position calibration and beam centering correctly, operators can significantly improve cutting quality, reduce dross, and extend consumable life.

For technical support, product inquiries, or compatibility information, contact Brogo Laser.