07
2026
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07
Lead Metrology: Deepening its expertise in blade contact testing with precision triggering technology.
Case Study of FLY Series Moving Bridge Coordinate Measuring Machine for Small Blades by Xi'an Lead Metrology Co., Ltd.
Lead Metrology: Deepening its expertise in blade contact testing with precision triggering technology.
In the manufacturing of aero-engine and gas turbine blades, the control of surface profile and key geometric parameters directly determines the overall performance of the machine. For a long time, the measurement of the minute arcs at the leading and trailing edges, blade twists, and the transition area at the blade root has been considered a challenge in contact-based inspection. Relying on years of experience in developing coordinate measuring machines, Lead Metrology has achieved high-precision and high-efficiency evaluation of all blade parameters using a high-rigidity mainframe structure and intelligent stylus compensation algorithm, without introducing optical sensors. This provides a reliable option for workshops lacking optical capabilities or strictly adhering to contact measurement standards.
System Solution
Lead Metrology's dedicated blade measurement system is built around a high-precision coordinate measuring machine (CMM) as its core platform. It is equipped with low-force touch-trigger sensors and an automatic rotating probe head, combined with self-developed blade evaluation software modules, enabling automatic data acquisition and tolerance analysis for specified cross-sections of the blade profile, root contours, and datum reference features.
Technical configuration
- High-precision coordinate measuring machine host, with air-bearing guide rail fully supported structure.
- Low-force trigger sensor, minimum force required: 0.01N, suitable for thin-walled blades.
- Automatic indexing measuring base enables multi-angle sampling of complex blades.
- Professional blade measurement module, supporting automatic calculation of parameters such as blade shape deviation, chord length, twist angle, maximum thickness, and leading and trailing edge radius.
- Graphical inspection report, one-click output of deviation cloud map and cross-sectional profile comparison map.
Performance characteristics
- Single leaf inspection takes 3-5 minutes
- Measurement repeatability is better than ±1.5 micrometers, achieving sub-micrometer triggering accuracy.
- The probe radius compensation algorithm is optimized for the leading and trailing edges of the blade, significantly reducing measurement errors for small arcs.
- No painting or surface treatment required, naturally adaptable to various metal blade surfaces
- Fully automated measurement process, automatically planning probe posture and obstacle avoidance path.
- Supports batch statistical analysis of blades and export of SPC data
- Reserved automation interface for integration with production line management system
Summary of advantages
1. It retains the characteristics of traceability and clear standards in contact measurement, making it suitable for scenarios with strict airworthiness audits.
2. No need for optical sensors to be linked with the turntable, reducing the complexity of system integration and calibration.
3. The probe directly contacts the sampling point, eliminating interference factors such as surface reflection and tilt angle.
4. For difficult-to-measure areas such as the leading and trailing edges of the blade and the chamfer at the blade root, we provide specialized probe assemblies and path templates.
5. Measurement results can be directly compared with traditional blade drawing annotation methods, facilitating quick comparison by process engineers.
Lead Metrology uses reliable coordinate contact technology to ensure that the precision of every blade can withstand scrutiny.
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