Bringing Precision Metrology to the Part with Portable CMMs

Fortunately, portable coordinate measuring machines (CMMs) have emerged as a solution, enabling high-accuracy 3D metrology to be performed directly on parts at any location.

When high-precision 3D metrology is required, considering the implementation of a portable CMM system can save time and unlock measurement opportunities throughout a facility. By liberating coordinate measurement and embracing the insights offered by portable CMMs, manufacturers can enhance their measurement capabilities and streamline their processes.

Limitations of Traditional CMMs

Traditional stationary CMMs are typically housed in dedicated climate-controlled spaces within metrology rooms. While these fixed machines offer high levels of accuracy, they come with certain drawbacks:

Central Location: Parts must be removed from the production line and transported to the metrology room, resulting in time wastage.

Space Requirements: Large stationary CMMs demand significant floor space, which can be a constraint in manufacturing facilities with limited room.

Environmental Constraints: Stationary CMMs require stable temperature and cleanroom conditions to operate optimally.

Capacity Constraints: Limited CMM capacity often leads to bottlenecks, causing parts to queue up for inspection.

Fixturing Challenges: Custom fixtures are often required to properly orient parts for measurement, adding complexity and time to the process.

Technical Expertise: Certified technicians are needed to operate and program traditional CMMs, necessitating specialized training.

Advantages of Portable CMMs

In contrast, portable CMMs offer a newfound level of measurement freedom and flexibility:

Mobility: Lightweight and wheeled units allow for easy movement of the CMMs to the parts, enabling in-line quality control and eliminating the need for part transportation.

Compact Size: Portable CMMs have a small footprint, making them suitable for deployment in tight production environments where space is limited.

Robustness: Ruggedized portable CMM models are designed to withstand the challenging conditions of shop floors, including vibration and dirt.

Rapid Setups: Laser tracking technology and quicker programming capabilities enable faster inspection starts, reducing overall measurement time.

Flexible Fixturing: Portable CMMs offer versatile part-holding options, including magnetic bases, suction cups, and clamps, simplifying the setup process.

User-Friendly: Intuitive software interfaces and touch probes make operating portable CMMs straightforward, reducing the training requirements for technicians.

Wireless Data Transfer: Bluetooth connectivity allows for instant transfer of measurement results without the need for cumbersome cables.

By eliminating capacity bottlenecks and enabling measurements to be performed at the pace of production, portable CMMs enhance efficiency and workflow in manufacturing facilities.

Key Applications of Portable CMMs

Portable CMMs find application in a wide range of measurement scenarios, including:

First Article Inspection: Validating the accuracy of new parts against specifications.

In-Process Checking: Monitoring key features during production to fine-tune manufacturing processes.

Maintenance and Repair: Documenting wear or damage on fixtures, dies, and tooling for maintenance purposes.

Reverse Engineering: Scanning existing parts to recreate designs without the need for detailed drawings.

On-Site Verification: Inspecting large structures such as airframes, vessels, and buildings directly at the construction site.

Design Validation: Testing prototypes and making necessary adjustments before final production.

Supplier Audits: Conducting quality assurance audits on parts received from external vendors.