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To decide on a CMM for your operations, a quick run through a checklist will help you find the best one for your applications.

First, decide where the CMM will be located, and will it be permanent or portable.

Second, determine the size of the largest part to be measured. A general rule of thumb, the larger the CMM, the higher the cost, so bigger is not always better. If your parts are small or medium sized, a medium-sized Bridge CMM will work for you.

Next, determine the number of data points that will be collected. If you require a high accuracy point cloud, then you need a laser scanner. However if all you are measuring
is a smaller number of points for evaluation, then a touch probe and stylus is all you need.

Determine the degree of automation required if you are using a fixed CMM. Again, if it is a point cloud, you will want as much automation for efficiency and productivity. If it is a smaller number of points, you may be able to do it manually.

Determine how fast you need the work to be done. If you are rapid prototyping or reverse engineering, you will want fast scanning, requiring a highly accurate and fast laser scanner.

Lastly, speak with CMM manufacturers, and they will help you find the best system for your specific application.

Remember these are general rules of thumb and your application may vary, but following this process should prevent you from going down the wrong path.

Applications for High Speed Scanners
Here is a list of applications where a high speed laser scanner provides premium productivity and top accuracy.

  • Inspection of sheet metal shapes and features
  • Assembly problem troubleshooting
  • Shape validation of machined orthopedic implants
  • Automotive flush & gap inspection
  • Inspection and reverse engineering of turbine blades
  • Investigating shrinkage of casted metal parts or injection-molded plastic components
  • Inspection of tool wear
  • Reverse engineering of manually tuned mould and dies 

To read more about Choosing the right CMMs click here.

Choosing the right CMM

By Jeff Bourque

Assessing the CMM that will work best for your shop

As many manufacturers know, a coordinate measuring machine (or CMM) is a three dimensional device for measuring the physical characteristics of an object.

Single interface for multiple micrometers

Mitutoyo has launched a laser scan micrometer data processing software - LSMPAK V2.0 - that can support multi-channel systems such as the company’s LSM-5200 compact controller.

Maximizing CMM ROI

by Jim Barnes

Aerospace shop boosts metrology throughput with upgrades

Simple length setting of on CNC machining centres

Prim LTS (length tool setter) is a new product from Renishaw. The single-axis tool setter allows users to set tool length, check for breakage and compensate for thermal growth on a CNC machining centre.

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