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Renishaw has released an updated version of Renishaw OMV – its 3D inspection software for CNC machine tools.

The new version allows users of multi-axis CNC machine tools to guarantee accurate measurement results through the ability to add two or more alignments in a program.

Renishaw OMV 2.02 is also Microsoft Windows Vista compatible and offers enhanced graphical reporting with user-configurable tools.

A PC-based part verification package for CNC machine tools, Renishaw OMV gives users coordinate measuring machine (CMM) style 3D verification against a CAD model.

Operators use a point-and-click programming interface and clear graphical reports of deviations and errors indicate whether a measured point is in, above, or below tolerance, before the part is removed from the machine.

Informed decisions can then be made to re-machine a component or sign off a deviation before the part reaches final CMM inspection.

Renishaw OMV 2.02 is available with an optional multi-axis module that allows part verification programs to operate on a variety of machine tools with 3+2 axis configurations, including tilting/rotating table and heads.

An Orientation Point tool can be used to automatically translate and rotate probe position to the best measurement position, without the need for an operator to manually input the required angle.

Renishaw OMV uses a measured alignment to guarantee accurate measurement results.

Version 2.02 also adds the ability to use two or more alignments in a program, which is a significant benefit to users working with components on multi-axis machines or with large or flexible components.

Renishaw OMV 2.02 features best-fit algorithms, including ‘Max-Material’ and ‘Least-Material’, which match groups of measured data to the CAD model, reducing deviations and errors by removing alignment and datum constraints.

When software reports lead to a decision to re-machine a part, these best-fit conditions can also be combined to give instant feedback about any adjustments required to machine tool setup.

Best-fit operations and the measurement of complex parts are also aided by a data-import facility, which allows a predefined series of points to be loaded into the software.

A series of probe paths is then automatically generated to measure these data points.

This feature has benefits for users needing to measure large free-form components, or where specific measurement points are required on a component.

Graphical and numerical reporting is configurable, allowing feature parameters to be toleranced and displayed.

Users are presented with at-a-glance views of the distribution of point deviations on printouts, while graphical reporting allows measured values to be displayed using colour-coded surface ‘confetti’ points, call-out labels or in-place values.

Within version 2.02, labels can be positioned manually and their orientation is user configurable, while the ‘Screen shot’ function has been improved to allow the size of the resulting image to be configured.

Measurement for a range of platforms Renishaw OMV allows the high-accuracy measurement of features such as multi-point circles, cylinders, cones, spheres and planes.

The software supports a range of native CAD files, including AutoCAD, Cimatron, CATIA, SDRC, SolidEdge, SolidWorks, Unigraphics and Pro/Engineer, plus standard formats such as IGES, Parasolid, STEP and STL.

Machine-tool controller compatibility is extensive, including Acramatic, Fanuc, Haas, Heidenhain, Hitachi Seicos, Makino, Mazak ISO, Mori Seiki, Okuma, Selca, Siemens and Yasnac.

An enhanced software package, Renishaw OMV Pro, is available for more demanding measurement applications and includes advanced geometric dimensioning and tolerancing (GDandT) functionality.


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.

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