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Products > measuring systems for drawing dies and punches > RICOS - specialized ring contour gauge for drawing dies

Special designed for measurement of inside profile (land angles) of ironing dies for 2-piece beverage can manufacture, tolerance model and comparison with CAD data


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Measuring task

Measuring task of RICOS is the measurement and evaluation of the inside profile of ironing rings in beverage can manufacture

The measuring and evaluation system RICOS serve the profile measurement and the tolerance evaluation of ironing rings for beverage can manufacture.

In the production employment of the ironing ring the profile and the position of the edge (land) in dependence of the wear changes. RICOS serve for the measurement of the form and the position of the land.


By tolerance patterns the rings can be classified regarding their employment fitness.

It proved as sufficient to work with a profile only relatively measured in y-direction since the associated absolute position of the edge is to be determined easily and comfortably over a measurement with the »RINGMASTER«.


The measurement of the profile takes place via a mechanical tracer, driving during the measuring procedure into x direction (measuring length 2–6 mm) with very high resolution in the Y‑coordinate (order of magnitude 1 µm).

Because of the high resolution of the tracer the surface roughness is measured additionally. This »noise« is filtered away by suited mathematical methods.


The measured values are seized, stored as pairs of x/y values and supplied to the evaluation.

Tolerance models

The examination of the fitting in barness in tolerance patterns forms the core of the evaluation of the profile measuring curves.

For each type of ring a tolerance model exists. With the help of the model measured profiles can be divided in »good« or »badly«.

Tolerance models can be given by CAD-data and by a manually input.

The figures show the RICOS-measuring instrument and a schematic representation of the measurement.


* These parameters apply to the standard device and can be adapted to different diameters.




Overview: Equipment for the perfect toolroom