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Case story – CMM – Escribano REVO retrofit - .PDF file.

A Madrid-based precision engineering business specialising in complex parts for aerospace and defence applications has invested in a Renishaw Revo five-axis measuring head and probe system.

The system, recently fitted to a Metris CMM at Escribano’s production facility, measures non-prismatic surfaces very quickly – many of which would be difficult or impossible to measure with touch trigger systems.

The head is able to overcome the limitations of three-axis scanning methods, where any attempt to rapidly move the large mass of a CMM results in inertial errors caused by accelerations and decelerations.

It uses synchronised head and machine motion when scanning, rapidly following changes in part geometry without introducing its own dynamic errors.

The CMM is able to move at a constant velocity while measurements are being taken without impacting accuracy.

Revo also benefits CMM users with infinite head positioning and tip-sensing probe technology, which further improves measurement accuracy by sensing close to the measured surface.

This combination of speed, flexibility and accuracy has been proven in a range of scanning measurement applications, including circle, helix, sweep and gasket scanning, plus, if required, rapid single-touch routines.

Escribano’s CNC machines are maintained and configured to minimise set-up and non-machining time, mostly using Renishaw OMP40 spindle-mounted touch probes and NC4 non-contact laser tool setting systems.

Three DEA Global Advance co-ordinate measuring machines (CMMs) with Renishaw probes check samples of parts for everything from thermal imaging cameras to components destined for the Joint Strike Fighter.

The company’s largest CMM is a Metris LKV CMM equipped with the Renishaw Revo five-axis measuring head and probe system.

Escribano has also invested in a white light interferometer microscope for measuring roughness and a contact profile meter that is capable of assessing the size and texture of a part’s surface.

Renishaw

A world leader in engineering technologies, Renishaw’s core skills in measurement and precision machining serve sectors as diverse as dimensional metrology, spectroscopy, machine calibration, motion control, dentistry and surgical robotics.

A world leader in engineering technologies, Renishaw’s core skills in measurement and precision machining serve sectors as diverse as dimensional metrology, spectroscopy, machine calibration, motion control, dentistry and surgical robotics.

Sensors for co-ordinate measuring machines (CMMs) are an industry standard, from basic touch-trigger probes through to automated stylus and probe changers, motorised indexing probe heads, and revolutionary five-axis measurement systems.

Machine probes for CNC machine tools allow automated tool setting, workpiece set-up, in-cycle gauging and part inspection. Products include laser tool setters, contact tool setters, tool breakage detectors, touch probes and high accuracy inspection probes.

For motion control, Renishaw supplies laser encoders, optical linear encoders, optical angle encoders, optical rotary encoders, magnetic rotary encoders, magnetic chip encoders and magnetic linear encoders.

To analyse the static and dynamic performance of position-critical motion systems, Renishaw’s laser interferometer and environmental compensation system offers a linear measurement accuracy of 0.5 ppm, readings of up to 50 kHz and a linear measurement speed of up to 4 m/s, with a linear resolution of 1nm.

Renishaw’s Raman spectroscopy products exploit the Raman effect to identify and characterise the chemistry and structure of materials. A diverse range of analytical applications include pharmaceutical, forensic science, nanotechnology, biomedical and semiconductors.

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