CNC Machine Calibration with HPI-3D Laser Interferometer

The HPI-3D laser interferometer is a high-precision measurement system designed for CNC machine calibration. It provides reliable, real-time feedback on linear displacement and angular deviations, including pitch and yaw, in full compliance with ISO 230-2 and VDI/DGQ 3441 standards. HPI-3D is used in industrial metrology applications where maximum accuracy, compact design, and ease of integration are essential.

Why Use a Laser Interferometer for CNC Calibration?

Calibrating CNC machines requires extremely accurate measurement of positioning errors along all axes. Traditional methods using built-in encoders or linear scales often lack the precision or flexibility needed for complex setups. HPI-3D provides:

Direct linear displacement measurements with 100 pm resolution
Angular error detection (pitch & yaw) using 3DOF mode
Dynamic measurement capabilities at speeds up to ±7 m/s
High-frequency sampling for vibration and velocity analysis
Non-contact operation, minimizing influence on machine dynamics

Supported Measurement Types

Linear position error (X, Y, Z)
Pitch and yaw deviation
Repeatability tests
Velocity and acceleration analysis
Straightness and thermal drift (with optional optics)

Fast Setup and Integration

The HPI-3D system is housed in a compact case and can be set up in minutes. It connects directly to the machine or setup frame and can be operated via included PC software. Compatible with:

Machine tools with open optical access
Gantry systems
Multiaxis setups with additional optics
Rotary tables (via Wally integration)

Software Features

HPI software enables:

Live measurement readout
Automated measurement cycles
Data export for ISO 230 reports
Graphical error analysis
Compensation table generation

More about HPI-3D Software →

Technical Compliance

ISO 230-2
VDI/DGQ 3441
Optional GUM traceability via calibration certificate

Download full specification →

Real-World Use Cases

5-axis CNC calibration in production environments
Thermal compensation tuning in machine tool R&D
Verification of positioning system upgrades
Long-travel axis linearity control (>3 m)

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