Measuring A Paradigm Shift in Shop-Floor Metrology
The field of coordinate measuring machines (CMMs) has witnessed little structural concept innovation since its inception, with traditional cartesian configurations such as bridge, gantry, and cantilever designs dominating the landscape. These configurations have served the industry well, offering precision and reliability for decades. However, as the demands of modern manufacturing evolve, so too must the tools that support it. Recognizing this, Aberlink has introduced the EXTOL Delta configuration CMM, a groundbreaking solution that addresses the growing need for cost-effective, space-efficient, and high-performance shop-floor measurement systems.
Understanding the Delta Configuration
At its core, the EXTOL Delta CMM design departs from conventional configurations by utilizing a parallel kinematic structure. This design involves three independent linear actuators working in concert to manipulate the measurement probe with high precision. The result is a compact and versatile machine with a reduced footprint, making it particularly well-suited for shop-floor environments where space is often at a premium.
In recent years the Delta structure has had a significant impact on other areas of advanced manufacturing due to its unique design characteristics and high efficiency with the structures being primarily used in advanced robotics, automated electronics assembly systems and 3D printing offering advantages in precision, speed, and adaptability.
Aberlink’s EXTOL Delta CMM incorporates cutting-edge technology to deliver unparalleled efficiency and accuracy in the field of coordinate metrology. By leveraging advancements in materials, control systems, and advanced software error mapping of the structure by capturing all machine geometry parameters, the Delta configuration achieves exceptional thermal stability, repeatability and accuacy, even in challenging manufacturing conditions. These innovations position it as a disruptive force in the world of metrology. Volumetric measuring accuracy with a Renishaw TP20 touch probe is 2.6 + L/250 µm while with a Renishaw SP25 scanning probe it is 2.3 + L/250 µm.
Benefits of the Delta Configuration
Space Efficiency: Traditional CMM configurations require significant floor space, making them less ideal for manufacturing setups where every square meter counts. The Delta CMM’s compact design minimizes its footprint, enabling manufacturers to integrate precise measurement capabilities directly into production. This proximity to the machining process reduces the time and effort required for part transportation and setup, streamlining workflows and boosting overall efficiency. The EXTOL 520 model offers a XY measuring volume of 520 x 520 mm with a footprint of 950 x 900 mm while the smaller EXTOL 370 offers 370 x 370 mm with an economical 715 x 730 footprint.
Cost-Effectiveness: Manufacturers are under constant pressure to optimize costs without compromising quality. The Delta CMM’s simplified mechanical structure reduces manufacturing and maintenance expenses compared to traditional CMM configurations. Its affordability makes high-quality metrology accessible to a broader range of businesses, including small and medium-sized enterprises that may have previously viewed CMMs as cost-prohibitive.
Robustness in Shop-Floor Environments: One of the significant challenges of deploying CMMs on the shop floor is their susceptibility to environmental factors such as temperature fluctuations, vibrations, and contaminants. The Delta CMM’s design mitigates these issues through enhanced structural rigidity and advanced thermal compensation algorithms. Its ability to maintain accuracy in less-than-ideal conditions makes it a reliable choice for real-time measurement applications in dynamic manufacturing settings. The EXTOL machine mechanical linear bearings and encoder scales, mounted vertically above the measuring volume, are away from potential contamination from dirt and cutting-fluids making the design intrinsically suitable to the shopfloor.
Speed and Agility: The parallel kinematic structure of the Delta CMM allows for faster and more agile movements compared to traditional configurations. This speed translates to quicker measurement cycles, enabling manufacturers to keep pace with high production rates. The Delta’s agility, particularly when utilizing analogue scanning probes, also facilitates the measurement of complex geometries and features, making it a versatile tool for a wide range of applications.
Integration with Automation: As industries increasingly adopt automation and Industry 4.0 principles, the need for seamlessly integrated measurement solutions becomes critical. The Delta CMM’s compact design and advanced connectivity features make it an ideal candidate for integration with robotic systems and automated production lines. Its compatibility with modern data management platforms ensures that measurement results can be easily incorporated into digital workflows, supporting closed-loop manufacturing processes.
Driving the Trend Toward Closed-Loop Machining
Closed-loop machining represents a transformative approach to manufacturing, where real-time data from measurement systems is used to inform and adjust machining operations dynamically. This feedback loop minimizes errors, reduces waste, and ensures consistent quality. Aberlink’s EXTOL Delta CMM is uniquely positioned to accelerate the adoption of this methodology through its innovative design and capabilities.
Enhanced Feedback Capabilities: The Delta CMM’s ability to provide rapid and accurate measurements makes it an invaluable component of closed-loop systems. By delivering real-time data on part dimensions and tolerances, the EXTOL enables manufacturers to identify deviations immediately and implement corrective actions before defects propagate.
Simplified Integration: Traditional CMMs often pose challenges when it comes to integration with machining centers due to their size and complexity. The Delta CMM’s compact footprint and straightforward setup make it easier to deploy in close proximity to machining operations. This ease of integration reduces the barriers to entry for manufacturers looking to embrace closed-loop machining.
Supporting Smart Manufacturing: The Delta CMM aligns with the broader trend toward smart manufacturing by offering advanced connectivity and data management features. Its ability to communicate with other systems in the manufacturing ecosystem ensures that measurement data is utilized effectively, driving continuous improvement and operational excellence.
Looking Ahead: The Impact of the Delta Configuration
Aberlink’s EXTOL Delta CMM represents more than just a new product; it signifies a shift in how manufacturers approach measurement and quality control. By addressing longstanding challenges such as cost, space, and environmental robustness, the Delta configuration has the potential to democratize access to high-quality metrology tools.
As more manufacturers adopt the Delta CMM and integrate it into closed-loop systems, the benefits will extend beyond individual businesses to the industry as a whole. Reduced waste, improved efficiency, and enhanced product quality will contribute to a more sustainable and competitive manufacturing landscape.
The CMM Fit For A King
The introduction of Aberlink’s EXTOL Delta CMM marks a turning point in the evolution of coordinate measuring machines. Its innovative design and impressive capabilities address the needs of modern manufacturing while paving the way for broader adoption of closed-loop machining. By delivering cost-effective, efficient, and reliable measurement solutions, the Delta CMM is poised to redefine industry standards and drive the next wave of innovation in metrology. Aberlink was honoured with the UK King’s Award for Innovation in 2024 in recognition of the outstanding design innovation and error mapping of the Extol CMM.
For more information: www.aberlink.com
