Benefits for Engravers: How to Use Motorized Z-Axis?

Role of the Motorized Z-Axis in Laser Machines

The Motorized Z-Axis in laser cutting or engraving machines controls the vertical distance between the laser head and the worktable. Its primary functions include:

• Multi-Layer Processing: Supports layered cutting or engraving at varying depths by dynamically adjusting the focus position for complex tasks.

• Adapting to Material Thickness: accommodates materials of different thicknesses without manual worktable adjustments, enhancing operational convenience.

• Improving Efficiency: Automated Motorized Z-Axis adjustments reduce manual intervention, significantly boosting productivity and processing consistency.

The Motorized Z-Axis enhances the flexibility and precision of laser machines, making it ideal for high-precision or multi-step processing tasks.

Controlling the Motorized Z-Axis in LightBurn

LightBurn is a powerful laser control software that supports precise Motorized Z-Axis configuration and G-code control. Below is a detailed guide for setting up and using the Motorized Z-Axis:

Motorized Z-Axis Configuration

Enable Motorized Z-Axis Functionality:

• Connect the laser machine to LightBurn and go to “Edit” > “Device Settings.”
• In “Basic Settings,” check “Enable Z-Axis”  “Relative Z moves only” and “0ptimize Z moves” to activate Motorized Z-Axis functionality.

Calibrate the Motorized Z-Axis:

In the “Move” window, use the Z-axis control buttons to test up-and-down movement, ensuring the direction and range are correct.

Alternatively, enter the G-code command $H Z in the “Console” window to trigger Z-axis homing for verification.

Controlling the Motorized Z-Axis with G-Code

LightBurn supports precise Motorized Z-Axis control via G-code. Below are common command examples:

Rapid Move to a Specific Height G0 Z-Number:

Moves the Motorized Z-Axis rapidly to a height of 10mm.(The maximum z offset distance of Max 4 cannot exceed 45mm, and that of Max 4 v2 cannot exceed 20mm)

Restore Absolute Positioning G0 Z-0:

Return the Z axis to its starting height(without z-offset)

Motorized Z-Axis Settings for Layered Processing

In LightBurn’s “Settings Editor,” you can set Motorized Z-Axis offsets for different cutting layers:

• Single Offset: Use “Z Offset (mm)” to set the Motorized Z-Axis offset for the first pass (e.g., -2mm for sinking).
• Multi-Layer Progression: Use “Z Step per Pass (mm)” to set the Motorized Z-Axis descent per pass (e.g., 2mm). Note: This option only applies when “Passes” is set to 2 or more.

Example: For a first pass without sinking and a second pass sinking 2mm, set “Z Step per Pass (mm)” to 2mm and “Passes” to 2.

Disabling the Motorized Z-Axis via Firmware (NEJE Software)

In certain scenarios, such as simplifying operations or adapting to specific firmware requirements, users may need to disable the Motorized Z-Axis. Below are the steps to disable the Motorized Z-Axis by flashing firmware in NEJE software:

Launch Device and Connect NEJE Software:

• Download the latest NEJE control software from the NEJE official website.
• Make sure the laser machine is recognized by your computer.

Flash No-Z-Axis Firmware

• Open  “Change Your Device Mode” in the bottom-right corner.
• Select a no-Z-axis firmware (e.g., switch NEJE Max 4 to Max 5 mode) and click “Start Flashing.”
• Keep the device’s power and USB connection stable during the flashing process to avoid interruptions.

Verify Motorized Z-Axis Disabling:

1. After flashing, restart the device and reconnect to the NEJE software.
2. Check the device settings to confirm the Motorized Z-Axis is disabled (Z-axis homing should be unavailable, and the Z-axis should not respond).

Note: Flashing no-Z-axis firmware disables the Motorized Z-Axis by default, suitable for simple tasks that don’t require Z-axis adjustments. Back up the original firmware for potential restoration.

Conclusion

The Motorized Z-Axis significantly enhances the precision and flexibility of laser machines, ideal for tasks requiring auto-focusing or multi-layer processing. By flashing no-Z-axis firmware in NEJE software, users can disable the Motorized Z-Axis for simpler operations.

In LightBurn, Motorized Z-Axis configuration and G-code control offer advanced flexibility, meeting complex processing needs through both interface adjustments and commands. Choosing the appropriate Motorized Z-Axis setup based on your processing goals will greatly improve efficiency and quality.