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intersticios fisuras


Oferta Tecnológica


Innovative gap measurement standard
A German research institute has developed a new standard for precise measurements of gaps in threads and gearing, extremely important for the reliable functioning. State of the art measurement procedures use tactile measuring equipment to determine the geometric characteristics of double flank installation. The precision of the probing process determines the measuring uncertainty. The standard enables a precise lead back. The research institute is looking for licensees.
A German research institute, active in metrology, has developed a new standard for precise measurements of gaps in threads and gearing, which is of enormous importance to ensure function and reliability. The gap measurement standard consists of a thermic, invariant base plate with at least four superimposed precision balls whose positions to each other are calibrated. In each case, two precision balls are forming one gap. The distances and diameters of precision balls and ball tips are so positioned that approximately the same geometric conditions exist, when e.g. measuring a thread or a gear. For metric threads the site conditions equal the profile angle of the thread of a = 60°. The calibration of the centre positions of the four precision balls is done on a coordinate measuring machine with integrated laser interferometer, based on the trilateration process.
Ordinary calibrations in the area of coordinate metrology characterise the spatial probing behaviour of the stylus on the precondition of the probing process. Some measurement tasks
are the area of thread and gearing measurements require a gap probing process in a double flank system, the so-called self- centering probing process. Here, significantly different correlations of forces lead to elastic deformations occur, which must be considered separately.
For the determination of hereby resulting deviations in length measurements the so called gap standard has been developed.
The research institute is searching for licensees.
Advantages and Innovations:
The following advantages are offered:
- Standard for the calibration of stylus configurations.
- Lead back of measurements in double flank installation.
- Same measurement strategy during calibration and application.
Stage of Development:
Field tested/evaluated
Patent(s) applied for but not yet granted
CommeR Statunts Regarding IPR Status:
Patent applied in Germany

Partner sought

Type and Role of Partner Sought:
Type of partner sought: industry
- Specific area of activity of the partner: Manufacturers or service companies who offer products
in the are of industrial quality control.
- Task to be performed by the partner sought: use the offered product as licensee.


Type and Size of Client:
R&D Institution
Already Engaged in Trans-National Cooperation:
Languages Spoken:


Technology Keywords:
09005 Materiales de referencia
02002010 Mecanizado (torneado, perforado, moldeado, fresado, cepillado, cortado)
09006002 Normas técnicas
09001008 Otros ensayos no destructivos
09001005 Tecnología mecánica relacionada con la realización de medidas