Dimensional – The ability to measure multiple axes of an object to get the whole dimension.
Profile – CMM can capture profile information and the form of both 2D and 3D objects.
Angle – Angles and orientation of two different points of an object can easily be measured.
Depth – The ability to map the depth of any object with the use of two stereo images.
The CMM plate, where the object is placed, is usually made of dense, rigid material, giving it much-needed stability to hold the workpiece. The balance of this structure is essential for accurate CMM measurement and analysis.
Above the work table is a mounted gantry with a vertical mechanical probe. The gantry is responsible for controlling the probe to take measurements of the tool or object along the X, Y, and Z coordinates. After measurement, the dimensional information obtained is then processed and analyzed, which ends the activities of a CMM.
With this device, all measurement comes from a single origin that operates under a coordinate system, ensuring minimal chances of error and increased dimensional accuracy. In addition, besides measurement and dimensional analysis, the machine may serve other functions, including tool certifications and CAD comparisons, among others, resulting in quality assurance of end products.
- It’s expensive; hence requires a high upfront investment.
- The probe may affect soft parts components made of rubber and other elastomers during dimensional analysis.
- Most coordinate measuring machines are large, requiring enormous room space.