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Updated Competence Database
The Competence database is based on the member's competence profiles in geometric and dimensional metrology. Each profile consists of several services which have been defined according to different dimensional metrology items (instruments, standards and artefacts, tools and methods, specific objects as well as supporting tasks).
The current database figures are:
- 45 active members
- 476 member records
- 2776 services defined
- 3045 available parameters
- 1277 specified parameters
- thread measurement in progress
Online Calculation
EVIGeM offers the possibility of calculating the pitch, diameter or indicated value for thread measurements according to the guideline EA-10/10 online on this website.
Take me to the online calculation
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MarGear GMX 400
Universal Gear Tester GMX 400, the accurate and fast solution for Gear analysis.The GMX 400 covers a wide range of applications for the gearing world up to 400 mm OD.
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- The EVIGeM members
Join the network
Additional organisations are invited to apply for a membership in the EVIGeM Virtual Institute. If you are interested in joining this network in the field of geometric and dimensional metrology, contact us and inquire about membership. Applications from companies and institutes offering technical expertise in any of EVIGeM’s dimensional subject areas and supporting tasks are always welcome.
Internetportal MMM ETH Zürich, Switzerland:
Various glossary term:
Contact line (of gear pairs)
1. The contact line connects all points on a tooth flank simultaneously touching at a certain time contact the mating flank. As the gears rotate, the contact line moves over the active range of the tooth flanks. 2. (of a cylindrical gear pair) the two base cylinders of a gear pair have two com¬mon tangential planes, which intersect in the instantaneous axis. They are the planes of action of the gear teeth. Each plane of action cuts the associated tooth flanks (flank and mating flank) in the contact line, corresponding to the work¬ing position. Each line is the common generating line of flank and mating flank; its prolongations are tangential to the base cylinder. Rotating the base cylinders around their axes and simulta¬neously winding and unwinding the tan¬gential planes, the contact lines travel through their zone of action.