API PlusGAGE Portable Articulated Arm Coordinate Measuring Machine

Overview

The API PlusGAGE is a high-performance portable articulated arm coordinate measuring machine (CMM) engineered for precision geometric metrology in dynamic industrial environments. Based on the proven kinematic architecture of serial-link robotic arms with seven rotational degrees of freedom, the PlusGAGE delivers traceable, NIST-traceable volumetric measurement capability across workspaces ranging from 2 meters to 5.5 meters in diameter. Its hybrid measurement paradigm integrates tactile probing—using interchangeable styli and scanning probes—with non-contact laser line scanning via the optional HDSD (High-Density Scanning Device) probe. This dual-mode operation enables users to perform dimensional verification, GD&T analysis (including position, profile, runout, and concentricity), surface deviation mapping, reverse engineering, and first-article inspection—all within a single, field-deployable platform. The system operates under ISO 10360-2 and ASME B89.4.10-2020 compliant conditions, supporting calibration traceability to national standards laboratories.

Key Features

• Integrated internal counterbalance mechanism: Ensures consistent probe-tip stability and measurement repeatability across all arm configurations and orientations without external support or re-zeroing.
• Dual high-capacity lithium-ion battery system: Delivers ≥10 hours of continuous operation under typical scanning loads, enabling uninterrupted shop-floor or on-site measurement campaigns.
• Equal-length arm design: Optimizes kinematic sensitivity distribution and reduces error propagation across the working volume, enhancing overall volumetric accuracy performance.
• Industrial-grade 802.11ac Wi-Fi module: Enables real-time, low-latency wireless transmission of point cloud and probe data to host software—eliminating cable drag, reducing setup time, and improving ergonomic workflow.
• Aerospace-grade carbon fiber arm structure: Combines exceptional stiffness-to-weight ratio (≥220 GPa tensile modulus), thermal stability (CTE < 1.2 ppm/°C), and impact resistance—ensuring long-term mechanical integrity and portability.
• Modular probe interface (MPS v3): Supports rapid interchange of tactile touch-trigger, analog scanning, and optical line-scanning probes—including the HDSD laser line probe with 4,000-point-per-line resolution and 1.2 million points/sec acquisition rate.

Sample Compatibility & Compliance

The PlusGAGE accommodates a broad spectrum of part geometries—from small machined components (<50 mm) to large aerospace subassemblies (>3 m). Its contact/non-contact flexibility supports measurement of fragile, soft, or highly reflective surfaces without deformation or preparation. All tactile probes comply with ISO 10360-5 for probing performance; the HDSD laser probe meets IEC 60825-1:2014 Class 2 laser safety requirements. System validation protocols align with ISO/IEC 17025:2017 for testing laboratories and support GLP/GMP documentation workflows, including audit trails, user access controls, and electronic signatures when integrated with certified metrology software platforms.

Software & Data Management

The PlusGAGE operates natively with API’s Metrology Software Suite (MSS), which provides full GD&T evaluation per ASME Y14.5–2018 and ISO 1101:2017 standards. MSS supports automated report generation with embedded uncertainty budgets, statistical process control (SPC) charting, and multi-sensor data fusion (tactile + laser + photogrammetry). Raw point clouds are exportable in standard formats (ASCII, IGS, STEP AP214, STL) and fully compatible with third-party CAD-based inspection tools (e.g., PolyWorks, Verisurf, Geomagic Control X). Data encryption, role-based permissions, and 21 CFR Part 11–compliant electronic record management are available through optional MSS Enterprise modules.

Applications

• Aerospace: Tooling verification, wing spar alignment, composite layup inspection, and engine component dimensional certification.
• Automotive: Body-in-white gap/flush analysis, die-cast part validation, and powertrain component GD&T compliance checks.
• Energy: Turbine blade profile verification, wind turbine tower segment alignment, and pipeline flange flatness assessment.
• Medical device manufacturing: Implant geometry verification, surgical instrument tolerance validation, and additive-manufactured part porosity correlation.
• Education & R&D labs: Kinematic modeling instruction, metrology training, and rapid prototyping dimensional feedback loops.

FAQ

What is the volumetric accuracy specification, and how is it verified?
The PlusGAGE achieves a volumetric accuracy of ±0.009 mm (2σ) across its full measurement envelope. This value is determined per ISO 10360-2 using calibrated step gauges, ball bars, and laser interferometer reference measurements—and is validated during factory certification and annual recalibration.
Can the PlusGAGE be used in uncontrolled shop-floor environments?
Yes. It operates reliably between 5 °C and 45 °C and features active thermal compensation algorithms that correct for ambient-induced arm expansion. For highest accuracy, temperature gradients should remain below 1 °C/hour.
Is the HDSD laser probe compatible with all PlusGAGE models?
The HDSD probe is supported on all PlusGAGE systems equipped with MPS v3 interface and firmware version 4.2 or later. A separate HDSD calibration certificate and matching arm-specific correction file are required for traceable operation.
Does the system support automated reporting for quality audits?
Yes. MSS includes configurable report templates with embedded measurement uncertainty, operator ID, timestamp, equipment ID, and calibration status—fully compliant with ISO 9001, AS9100, and FDA QSR requirements.
How is traceability maintained across field deployments?
Each PlusGAGE ships with a NIST-traceable calibration certificate. Optional on-site recalibration services include artifact-based verification using certified gauge blocks and sphere plates, documented per ISO/IEC 17025 procedures.