Coordinate measuring machines with optical sensors
Coordinate measuring technology is increasingly working with optical sensors. This technology promises faster and more flexible measurements. However, optical sensors can only fully exploit their advantages with optimum calibration and monitoring. The new guideline VDI/VDE 2617 Sheet 6.1 deals with acceptance and confirmation tests for coordinate measuring machines (CMMs) that work with image processing systems and supplements the standard DIN EN ISO 10360-7.
The VDI/VDE 2617 Sheet 6.1 provides definitions for the structural resolution of optical sensors and notes on the monitoring of CMMs and rotary-pivot joints. The guideline is to be seen as a supplement to the standard DIN EN ISO 10360-7 and is only to be applied together with it. The terms for the inspection of CMMs can be found in DIN EN ISO 10360-1. Optical sensors for the measurement of lateral structures are described in the appendix to give the user an overview of the available technologies.
More precise standard
If a coordinate measuring machine uses both vision systems and other probe systems, the test of the length measurement deviation is performed in accordance with the applicable standard. If the CMM only works with an image processing system, the test of the length measurement deviation is carried out with this probe system according to DIN EN ISO 10360-7. CMMs with optical distance sensors are tested according to DIN EN ISO 10360-8.
Issuer of the Directive VDI/VDE 2617 Sheet 6.1 "Accuracy of coordinate measuring machines - Characteristics and their verification - Guide to the application of DIN EN ISO 10360-7 for coordinate measuring machines with vision systems" is the VDI/VDE Society for Measurement and Automation Technology (GMA).
The guideline will be published in draft form in March 2019 and can be ordered at a price of EUR 87.90 from the Beuth Publishing House can be ordered. Online orders are possible under www.beuth.de or www.vdi.de/2617 possible. The possibility to contribute to the shaping of the directive through comments exists by using the electronic appeals portal or by written notification to the issuing company (gma@vdi.de). The deadline for objections is 31.08.2019. VDI guidelines can be used in many public display free of charge.
