CMM COMPASS

An Arm CMM is a measuring device equipped with an arm with multiple joints. They were developed using prosthetic limb technology. Operators can freely move the arm and approach the target object from multiple directions.

Arm CMMs are typically more affordable than a bridge-type CMMs and don't take up as much space. Therefore, they can be installed in various locations such as manufacturing floors and workshops. It is also possible to perform measurements while working on the manufacturing line.

However, Arm CMMs cannot measure large-sized products that do not fit within the range of the arm's movement or objects with complex shapes and deep areas. Representative products include "Gage Max FARO ARM" from FARO and "MCAx S" from Nikon.

A Gantry CMM is a measuring device with a structure that combines a fixed foundation and a sliding top part. Representative products include Mitutoyo's "FALCIO APEX 2000G/3000G Series" and Hexagon Metrology's "ALPHA."

Because the main shaft structure moves over the table or rails when performing measurements, Gantry CMMs are relatively compact compared to bridge-types. They are capable of measuring heavy or large objects that are difficult to measure with bridge-type machines such as large components of automobiles, aircraft, and communication satellites.

A Cantilever CMM is a measuring device with a cantilever structure where only one end is fixed to a supporting structure, similar to a diving board in a swimming pool.

It allows measurements from three sides, is well-suited for manual operation, and provides comfortable access to the workpiece. While its mobility precision is somewhat lower, it proves useful in situations where ease of operation is a top priority.

On this page, we introduce the features and specifications of Mitutoyo's "MiSTAR 555," Carl Zeiss's "ZEISS DuraMax," and Hexagon Metrology's "TIGO SF." If you are considering the introduction of a Cantilever CMM, please use this information as a reference.

A Handheld CMM is a type of device that utilizes a compact handheld probe to measure the target object.

Significant advantages of Handheld CMMs include small size, lightweightness, and excellent environmental resistance, allowing for convenient measurements anytime, anywhere, on-site. This type of device is beneficial for measuring sizes and complex-shaped objects that are challenging to measure with traditional CMMs with fixed ranges of movement.

While the proficiency of the operator may influence the results with some products, recent advancements have brought about devices that reduce variability through navigational settings and specify measurement locations. The relatively low implementation cost has led to widespread adoption, even in facilities already using bridge-type machines.

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CNC-method machines are capable of carrying out measurements automatically. Movements of the tool head are controlled by a computer.

The advantage of the CNC-method is that it allows for quick and highly accurate measurements by placing the measurement object in a predetermined position and executing the measurement program. It eliminates variations caused by operators and can easily handle complex work shapes and precise measurement items. This contributes to reducing labor and streamlining processes.

However, CNC-method machines generally have a higher initial cost than manual ones. Additionally, programming and test operations are required when using the machine, and setup can be time-consuming and labor-intensive. Therefore, they are not suitable for measuring unique prototypes or handling measurements of various different items.

Here, we introduce the features and specifications of common CNC-method CMMs. If you are considering the introduction of a CNC-method CMM, be sure to check this information.