Equator™ Comparison process RENISHAW

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Equator's innovative and highly repeatable gauging technology is based on the traditional comparison of production parts to a reference master part. Re-mastering is as swift as measuring a production part and immediately compensates for any change in the thermal conditions of a shop-floor environment. Equator can be used in factories with wide temperature variation – simply re-master and the system is ‘re-zeroed', ready for repeatable comparison to the master.

Traceability to calibrated CMMs

Master parts do not need to be expensive custom parts like a traditional gauge; take a production part and measure it on a co-ordinate measuring machine (CMM) to establish feature variation from CAD or drawing nominals. The results from any CMM, operating with any CMM programming software, can be configured to be used directly within the Equator software.

Effectively, the calibrated absolute accuracy of the CMM (often located in remote temperature controlled rooms to ensure accuracy) can be ‘extended' onto the shop floor to provide calibrated traceability to Equator measurements. With the calibration file loaded into the Equator software, measurements made in the Equator system can be referred back to the CAD or drawing nominals. This allows true process control with SPC packages.

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‘Master' part comparison

A known good part, or 'master' part, is scanned to generate a master data set. The same scanning routine is applied to each of your production parts. Each production data set is compared to the master data set to determine whether the associated part is within user defined tolerances.

'Part nominal' comparison

Determining the nominal size of your production parts is also possible. Simply measure the master part on a CMM to create a calibration data set to normalise your subsequent comparisons. Now the true deviations from part nominal can be displayed for each part.

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Data Sheet

Data sheet: Equator 300 gauging system - SP25/MODUS[4.9MB]

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Case stories

(IN705) Conroe Machine - Equator™ programmable gauges help create the ultimate automation cell for bearing machining and parts sorting
Conroe, Texas, USA – Conroe Machine is doing what most machine shops only dream of – hard turning a family of parts around the clock in an unmanned cell that operates a ‘self controlled’ process.
[968kB]
(IN602) Case study: Euromould: Equator™ gauge: “As Quality Manager, it has quickly become the best investment we’ve made.”
David Powell, Quality Manager at UK-based Euromould Ltd, has been using Renishaw’s Equator flexible gauge to increase inspection capacity and portability, achieving an 85% reduction in the inspection time of injection moulded parts.
[324kB]
(IN217) Case study: Kishan Auto - Gauging time and costs cut by 80% and accuracy maintained despite a 21°C range
Kishan Auto parts Pvt. Ltd., Rajkot (Gujarat, India) is a world leader in the manufacture of connecting rods for major names in the car, compressor, heavy commercial vehicle, tractor, marine engine and earth mover manufacturing industries. Kishan recently purchased a Renishaw Equator flexible gauging comparator, and have seen an immediate reduction in cost and gauging cycle times of more than 80%. Additionally, despite shop floor temperature variations of more than 21°C (43°F), measuring performance has been unaffected due to Equator’s unique comparator method which uses master parts calibrated on Kishan’s co-ordinate measuring machine (CMM).
[1.5MB]
(IN215) Case study: Eponsa - “Equator™ could reduce waiting time to zero, it can gauge difficult features and the price is very competitive”
Eponsa, a manufacturer of automotive components located near Barcelona, Spain, has purchased a versatile and innovative shop-floor comparative gauge, the new Renishaw Equator, to check the quality of stamped parts and assemblies. This will reduce non-productive waiting times to a fraction of the time taken now, while maintaining the high quality and manufacturing efficiencies that are critical for the success of an automotive subcontractor. Other advantages for Eponsa are that Equator can scan the form of part features with its SP25 probe and change styli with the stylus change rack, included as standard, to check a large variety of parts.
[636kB]
(IN111) Case study: Meyer Tool - Aero-engine component maker Meyer Tool “softens” up hard gauge costs with software-driven Equator™ gauge
A software-driven comparative gauge, Renishaw’s new Equator system is already starting to soften up the cost for numerous hard gauges at aero-engine component maker Meyer Tool, Cincinnati, OH. Meyer Tool designs, builds, and maintains dozens of these costly tools every year for in-process measurement.
[1.2MB]