ISO 15616-2:2003

Overview

ISO 15616-2:2003 specifies acceptance tests for CO2‑laser beam machines used in high‑quality welding and cutting, focusing on the measurement of static and dynamic accuracy. It defines procedures, required measuring equipment and a classification system to evaluate the manipulation system precision, positioning accuracy, repeatability and trajectory exactness for 2D operation (two operation directions). This part is intended to be used in conjunction with ISO 15616‑1:2003 (general principles and acceptance conditions).

Key topics and technical requirements

• Manipulation system precision
  • Measurement of maximum deviation of the focus/working point from intended path in X, Y, Z or rotary axes.
  • Tests address straightness, parallelism, squareness and axial/radial run‑out for moving tables, focusing heads and rotary fixtures.
• Positioning accuracy and repeatability
  • Characteristics follow definitions aligned with ISO 230‑2 (mean reversal, uni/bi‑directional repeatability, bi‑directional accuracy).
  • Measurements performed with calibrated devices and under specified load conditions.
• Trajectory exactness (dynamic accuracy)
  • Compare programmed contour to actual tool path during simulated processing of standard contour elements (square sides typically 80 mm).
  • Inspect corner rounding error and overshoot (errors f_a and f_o) at different trajectory velocities, with and without load.
• Measuring devices and procedures
  • Use calibrated mechanical, optical (laser) or inductive measuring devices (e.g., straightedge, dial gauges, laser interferometers) as specified.
  • Reporting: results tabulated with maximum acceptable values and test conditions documented.
• Classification system
  • Establishes motion‑system grades to match required precision for application‑specific needs.

Applications and practical value

• Ensures CO2 laser welding and cutting machines meet acceptance test criteria for production of precision parts.
• Supports machine manufacturers, integrators and end‑users in verifying machine performance before commissioning.
• Useful for QA/inspection teams and certification bodies performing contract acceptance, procurement verification or periodic re‑qualification.
• Helps select appropriate machine classes for applications where precision, repeatability and trajectory control directly affect weld/cut quality.

Who should use this standard

• OEMs of CO2 laser machines
• Contract manufacturers and job shops using laser welding/cutting
• Quality assurance engineers and test laboratories
• Procurement specialists specifying machine acceptance conditions

Related standards

• ISO 15616‑1:2003 - General principles and acceptance conditions (primary companion).
• ISO 15616‑3:2003 - Calibration of instruments for gas flow and pressure measurement.
• ISO 230‑2 - Machine tool positioning and geometric test definitions (referenced for positioning characteristics).

Keywords: ISO 15616-2, CO2 laser beam machines, acceptance tests, static and dynamic accuracy, positioning accuracy, repeatability, trajectory exactness, manipulation system precision.