We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Concept for soft sensor structure for turning processes of AISI4140: DFG priority program 2086, project: In-process soft sensor for surface-conditioning during longitudinal turning of AISI4140.
- Authors
Böttger, David; Stampfer, Benedict; Gauder, Daniel; Straß, Benjamin; Häfner, Benjamin; Lanza, Gisela; Schulze, Volker; Wolter, Bernd
- Abstract
During turning of quenched and tempered AISI4140 surface layer states can be generated, which degrade the lifetime of manufactured parts. Such states may be brittle rehardened layers or tensile residual stresses. A soft sensor concept is presented in this work, in order to identify relevant surface modifications during machining. A crucial part of this concept is the measurement of magnetic characteristics by means of the 3MA-testing (Micromagnetic Multiparameter Microstructure and Stress Analysis). Those measurements correlate with the microstructure of the material, only take a few seconds and can be processed on the machine. This enables a continuous workpiece quality control during machining. However specific problems come with the distant measurement of thin surface layers, which are analyzed here. Furthermore the scope of this work is the in-process-measurement of the tool wear, which is an important input parameter of the thermomechanical surface load. The availability of the current tool wear is to be used for the adaption of the process parameters in order to avoid detrimental surface states. This enables new approaches for a workpiece focused process control, which is of high importance considering the goals of Industry 4.0.
- Subjects
STRAINS &; stresses (Mechanics); GOAL (Psychology); RESIDUAL stresses; SURFACE states; MAGNETIC measurements; MACHINING
- Publication
Technisches Messen, 2020, Vol 87, Issue 12, p745
- ISSN
0171-8096
- Publication type
Article
- DOI
10.1515/teme-2020-0054