Focus-Variation Instrument Measures Accurately in Tight Tolerances

IMTS 2018: Alicona’s µCMM 3D focus-variation measuring instrument is designed for high accuracy in tight tolerances. 


Facebook Share Icon LinkedIn Share Icon Twitter Share Icon Share by EMail icon Print Icon

Alicona’s µCMM 3D focus-variation measuring instrument is designed for high accuracy in tight tolerances. Through a combination of tactile coordinate technology and optical surface metrology, the instrument measures dimensions, position, shape and roughness of components with one sensor.

The instrument is capable of measuring small surface details including precise determination of position, through several optical 3D measurements in relation to each other, the company says. The 3D measurement takes place only at the relevant measuring points.With only one sensor, users measure both surface roughness and GD&T features with tolerances in the single-digit µm range. The spectrum of measurable surfaces includes industrial material and composites such as plastic, PCD and ceramics. It accommodates matte, polished and highly reflective components. Features include single-button solutions, automated measuring sequences and ergonomic operating panels such as a specially developed controller. Another feature is measurement automation, achieved by the AutomationManager automation interface to automatically measure surface roughness parameters and GD&T features. An administrator defines the required measuring programs, which are started by an operator. The programs to be measured are selected via drop-down menu or barcode scanner. The measurement result is then completely operator-independent.


  • Gaging Countersunk And Chamfered Holes

    While countersunk and chamfered holes are similar in appearance, functionally they are quite different. Consequently, different gages exist to serve these different functional requirements.

  • DFGT - Double Flank Gear Testing

    Functional gear testing, also known as total radial composite deviation, is a method of looking at the total effect of gear errors. This test method simulates the conditions under which a set of gears is likely to operate as a result of the gears meshing together.

  • Composites Machining for the F-35

    Lockheed Martin’s precision machining of composite skin sections for the F-35 provides part of the reason why this plane saves money for U.S. taxpayers. That machining makes the plane compelling in ways that have led other countries to take up some of the cost. Here is a look at a high-value, highly engineered machining process for the Joint Strike Fighter aircraft.