Semi-automatic inspection of internal threads
IIT Manual Station

Introducing Semiautomatic Contactless Thread Inspection?

IIT manual station is a compact, and reliable solution for internal thread inspection. The inspection system consists of a capacitive probe with toroid measurement field, special fixture for centering of probe mounted to pneumatic cylinder, and a fixture for the inspected products.

Manual station is very versatile especially for lower volume production with large variety of products and thread sizes, complicated shapes requiring special fixtures and other special requirements. With shorter delivery time and easy process integration thanks to manual part handling, it is a very interesting alternative to fully automated solutions. 

With multiple advantages, IIT manual station is a more complex inspection of internal threads compared to using thread gages. This tool decreases the operator mistakes to minimum by automated data acquisition and evaluation, reduces the cycle time by 70% compared to regular manual inspection.


IIT Manual Station
IIT profile - Nominal thread
IIT profile - Damaged thread
IIT profile - Short thread
IIT profile - Missing chamfer
IIT profile - Loose thread
IIT profile - chip inside thread

Detection Capabilities

How does it work?

  • Parts are manually loaded by operator to specially designed fixture mounted on the bottom plate. Measurement is manually started by a button or by foot pedal. After starting, the probe is inserted into the thread and a synchronized signal is acquired. It is further processed to detect any deviations from the expected profile. Several approaches can be applied to detect different types of defects. Different tolerances can be applied depending on the product and customer requirements for the thread quality. Various features (not only thread) can be evaluated from the readout. All this can be configured in the supplied software. 
  • Machine status and evaluated results can be visualized by LED indicators on the machine or a connected HMI monitor. The monitor provides the operator with advanced visualization of measurement and statistics.  
  • System provides calibration and teach-in capabilities, pre-configured programs for multiple part types, online visualization and statistical processing, storage of data about rejected parts, connection via ethernet and other data useful functions. 
IIT Manual Station


System Parameters

Thread size range:

M5 - M25 (custom sensors for higher dimensions)

Thread length:

max. 50 mm (more on demand)

Measurement speed:

approximately 1 part/s based on application


0.02 mm average

Inspection configuration:

teach-in based on the sample master parts

More about the technologies


INSPECTION of Internal thread

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