3D datasets of insert and injection valve

Vertical Focus Probing

Measure flanks with more than 90°

So far, geometries such as the bore holes of e.g. injection valves in the automotive industry could hardly be measured optically. Lateral probing of components with vertical surfaces was limited to tactile measuring systems, CT solutions or complex special solutions. This changes with a new function of the optical coordinate measuring system µCMM. Vertical surfaces of more than 90° can now also be measured optically.

Optical hole measurement

Vertical surfaces of more than 90° can now also be measured optically. The diameter-depth ratio of holes ranges from 1:3 to 1:10, the measurable diameter is 0.1 mm to 2 mm. Users measure parameters such as outside and inside diameter and opening angle.

More measurable parameters

Reference surfaces, contours, lengths etc.

In addition to holes, dimensional features such as reference surfaces, contours, lengths etc. can thus be optically measured with high accuracy, in high resolution and in short measurement times.

Multiple hole measurement

with automatic rotation unit "µCMM Real3D”

In combination with an automatic rotation unit "µCMM Real3D", turning the 3-axis CMM into a 5-axis system, multiple holes including their orientation to each other can be measured. One application which can be achieved using the µCMM in combination with Real3D is the measurement of injection nozzles including diameter, K-factor, injection angle and side angle.

Vertical Focus Probing

Extension of Focus-Variation technology

The method for hole measurement "Vertical Focus Probing" is an extension of the Focus-Variation technology and is based on the use of a partial light cone. Individual diffusely reflected light rays from vertical surfaces are captured by the lens. Flanks with more than 90° are traceably measured in high-resolution and high repeatability. Vertical flanks measured in this way can be used, for example, to fit a workpiece coordinate system.

Paper: Vertical Focus Probing and the use in Dimensional Metrology

This new technology is an extension of the Focus-Variation technology and hence a pure optical measurement technology. It allows the measurement of vertical walls and micro holes directly without articulating the sample during the measurement. Read in this recently published R&D paper more about the measurement principle of Vertical Focus Probing and the impact of this method with respect to micro hole measurement and 3D measurements of steep flanks with a slope angle of more than 90°. For all measurements the optical coordinate measurement machine µCMM is used.

Alicona optical measurement of a calibrated pin

Further questions on the Alicona µCMM?