METHOD FOR QUANTITATIVELY DETERMINING THE SIZE OF A SOFT ZONE AREA OF A PARTIALLY HARDENED WORKPIECE

METHOD FOR QUANTITATIVELY DETERMINING THE SIZE OF A SOFT ZONE AREA OF A PARTIALLY HARDENED WORKPIECE

The bolt (1) used to hold a planet wheel in an epicyclic gear train has a hardened center section (2) and soft ends (3). The workpiece hardness measurement system uses a multi-frequency eddy current measuring coil (4) which is passed along length of the bolt. Differences in the eddy currents enable...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: YASHAN, ANDRIY, BECKER, RAINER, DISQE, MICHAEL
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
MEASURING ANGLES
MEASURING AREAS
MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS
PHYSICS
TESTING
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Beschreibung
Zusammenfassung:The bolt (1) used to hold a planet wheel in an epicyclic gear train has a hardened center section (2) and soft ends (3). The workpiece hardness measurement system uses a multi-frequency eddy current measuring coil (4) which is passed along length of the bolt. Differences in the eddy currents enable it to detect and measure the lengths (b) of the soft ends of the bolt.