Measuring threads

A function for optical measurement according to NIHS
Optical measurement function
Thread measurement according to NIHS
Accurate and fast measurement without programming

This function allows you to optically measure a thread with triangular or rounded teeth. No programming is necessary, just choose the function and configure it.

All characteristics are automatically measured and displayed.

This function is particularly suitable for qmtprojector-100 equipment and qmtvline installation.

qmtprojector-100
qmtvline

 

News

SIMODEC Innovation Trophy for the qmtprojector-100

In the Measurement and Control category, the SIMODEC innovation trophy was awarded to the qmt company for the presentation of its qmtprojector-100 product with the qmtvline fitting
More information
Measurements carried out according to NIHS standards

The function performs measurements according to the definition in the NIHS standards.

  • NIHS 06-10, NIHS Miniature S Thread - Basic Profile and Tolerances
  • NIHS 06-11, Miniature thread S NIHS - Standards
  • NIHS 06-12, NIHS Miniature Thread S - Gauges
  • NIHS 06-13, Miniature thread S NIHS - Pins
  • Vedran Šimunović, Gorana Baršić and Marko Horvatek (2022), Analysis of measurement uncertainty of (simple) pitch diameter calibration when selected sizes of zeiss wires are used, Transactions of FAMENA, Vol. 46, No. 2, pp. 97-105
A metrological validation of the function

This function has been validated. More information under Thread function metrological validation report

Thread side and rod diameters in mm

The thread flank diameter is determined as specified in the NIHS 06-13 standard and described in the EURAMET cg-10 document. Virtual traps are supported on the nets. The thread flank diameter is the distance between the contact points of the rods on the thread. The diagram below illustrates the position of the sidewall diameter and other thread diameters. The diameter of the rods is chosen according to the NIHS 06-13 standard, if the “with standardized rod” option is checked.

The diameter on the tap is the diameter resulting from the tops of the virtual pins positioned on the tap.

Average pitch in mm

The step is the average of all the steps (from vertex to vertex) obtained in the measurement area.

Nominal diameter and bottom in mm

The nominal diameter comes from finding the real apex from the intersection of the 2 sides of each tooth. This diameter is the average of all diameters measured in the area.

The bottom diameter comes from the search for the real bottom from the intersection of the 2 sides of each tooth. This diameter is the average of all diameters measured in the area.

Taper in mm

Taper is measured as the difference in gauge diameter between measurement A and B.

Average angle in degrees

The tooth angle is the average of all angles obtained in the measurement area

Thread height in mm

The net height is the average of the heights obtained between each bottom and each top of the net.