On-Machine Measurement

On-machine measurement is defined as measuring a part within the physical area of a machine (without moving it), usually using a probing feature of the machine that is also manufacturing the part. Standard coordinate measurement machines (CMM) measure in a separate measuring lab. Each measurement method has strengths and weaknesses that make technicians prefer one over the other.

Technicians who prefer on-machine measurement cite the ease of measurement because there is no movement of the part involved, allowing for less errors in the manufacturing process. Technicians enjoy the automated measurement attached to machinery that doesn’t require moving parts. On-machine measurement is often utilized for large productions, malleable materials, parts that should be removed from the chuck, or large products that aren’t easy to transport.

Technicians who prefer standard CMMs beg to differ. CMM supporters argue that the shop floor is too unpredictable with temperature, environment, and contaminants that alter the actual measurement of a part. Some wonder how it’s possible to trust a machine measuring itself. If the machinery is defective, wouldn’t that mean the additional OMM machine is too? Technicians who instead use CMMs say they would rather lose time transporting a part than have an inaccurate measurement.

Clearly, there are flaws in using only OMM measurement or a standard CMM, so KEYENCE is bringing the CMM to on-machine measurement with the XM-5000 and WM-3500 CMMs. The XM and WM tackle standard CMM and OMM measurement issues.

Using a portable CMM as an OMM measurement tool ensures the efficiency and ease of measuring a part on a machine while still ensuring CMM precision.

With KEYENCE’s portable CMM, there is no need to bring a part onto a different shop floor. Instead, you move the CMM to the part and press the measurement button to define 2D, 3D, and GD&T features. The ability to bring the CMM to the machine for on-machine measurement eliminates any bottlenecks from transporting parts to a different CMM measurement floor.

KEYENCE’s portable CMMs come equipped with technology that tackles the unpredictability of the shop floor. They are easily maneuverable around unpredictable spaces by hand, on a stage, tripod, or cart, and have a temperature compensation function for volatile environments.

The temperature compensation function ensures that regardless of the shop floor environment, the CMM can adjust for measurements that align with the standard temperature. These additional features collaborate to ensure that the KEYENCE CMMs are the best CMMs for on machine measurement.

Instead of deciding between a CMM or OMM measurement, pick KEYENCE’s portable CMMs to get the most out of your equipment. Plus, enjoy all the benefits of OMM measurement and the accuracy of a CMM. Our clients consistently report that our CMMs reform their measuring processes into a streamlined method without bottlenecks.

Have questions or want more info? Contact us to request a demo today.