Principles of grinding processes

2022 ◽  
pp. 351-468
Author(s):  
Bahman Azarhoushang ◽  
Heike Kitzig-Frank
Keyword(s):  
Grinding Processes

A review of the application of acoustic emission techniques for monitoring forming and grinding processes

2005 ◽  
Vol 159 (1) ◽  
pp. 48-61 ◽  
Author(s):  
T. Jayakumar ◽  
C.K. Mukhopadhyay ◽  
S. Venugopal ◽  
S.L. Mannan ◽  
Baldev Raj
Keyword(s):  
Acoustic Emission ◽  
Grinding Processes

scholarly journals A case study on the observability of cutting fluid flow and the associated contact mechanics in scaled rough surfaces

2021 ◽  
Vol 3 (5) ◽  
Author(s):  
Michael Müller ◽  
Lukas Stahl ◽  
Robar Arafat ◽  
Nadine Madanchi ◽  
Christoph Herrmann
Keyword(s):  
Fluid Flow ◽  
Contact Mechanics ◽  
Early Stage ◽  
Cutting Fluid ◽  
Cutting Fluids ◽  
Friction Behavior ◽  
Two Fluids ◽  
Grinding Processes ◽  
Different Characteristics ◽  
Tool Cutting

AbstractIn grinding processes, heat is generated by the contact of the grains with the workpiece. In order to reduce damages on the workpiece and the grinding tool, cutting fluids are necessary for most grinding processes. They have the tasks of cooling and lubricating the contact zone and to remove the chips from the contact area. Different types of cutting fluids perform differently regarding these tasks, which can be investigated on a laboratory scale. However, the results of those experiments are limited to certain workpieces and processes and information about the contact mechanics are not available. The experimental investigation of contact mechanics under cutting fluid influence is hardly possible. For this reason, this paper uses a measurement strategy that uses scaled topographies and has already been successfully applied to contact mechanics problems. With such a setup, it is intended that at an early stage in the development of cutting fluids, their characteristics in terms of contact mechanics can be determined very efficiently. To demonstrate this approach, two different cutting fluids were tested with the help of the associated test rig—a water miscible emulsion and a non-water miscible grinding oil. The two fluids showed fundamentally different characteristics regarding their hydrodynamic load bearing effect, their influence on the friction behavior of the contact and their fluid flow in the gap. The properties analyzed here correspond to the practical application of cutting fluids. The results underline the potential of the presented setup for an integration into the development process of cutting fluids.

Kantenpräparation durch Formschleifprozesse*/Cutting edge preparation by form grinding

2017 ◽  
Vol 107 (06) ◽  
pp. 453-460
Author(s):  
E. Prof. Uhlmann ◽  
J. Bruckhoff
Keyword(s):  
Tool Life ◽  
Cutting Tools ◽  
Cutting Edge ◽  
Grinding Processes ◽  
Form Grinding ◽  
Cutting Edge Preparation ◽  
Edge Preparation

Angesichts steigender Anforderungen an Zerspanwerkzeuge nimmt die Schneidkantenpräparation einen immer größer werdenden Stellenwert ein, da sich so die Standzeit von Zerspanwerkzeugen erhöhen lässt. Die bisher eingesetzten Präparationsverfahren eignen sich meist nur für einfache Verrundungen an der Schneidkante. In umfangreichen Untersuchungen wurde die Eignung von Formschleifprozessen zur Herstellung definierter Schneidkantenmikrogeometrien anhand von Arbeitsergebnissen analysiert.   Due to increasing demands on cutting tools cutting edge preparation has a high priority because it influences the tool life. Current cutting edge preparation processes can only generate simple roundings on the cutting edge. By extensive investigations the suitability of form grinding processes for the production of defined microgeometries on the cutting edge was analysed.

Prozessüberwachung beim ultraschallunterstützten Schleifen*/Influence of the tool-workpiece contact on the ultrasonic amplitudes in the grinding process

2018 ◽  
Vol 108 (07-08) ◽  
pp. 513-518
Author(s):  
J. Bruckhoff ◽  
E. Uhlmann
Keyword(s):  
High Hardness ◽  
Grinding Process ◽  
Process Measurement ◽  
Hard Materials ◽  
Grinding Processes ◽  
Technical Ceramics

Hinsichtlich Zähigkeit verbesserte technische Keramiken führen in Kombination mit der materialspezifischen hohen Härte dieser sprödharten Werkstoffe zu Herausforderungen bei der Bearbeitung. Das präzise sowie wirtschaftliche Bearbeiten geschieht daher vorwiegend mit Schleifverfahren. Die Ultraschallunterstützung kann die Produktivität von Schleifprozessen erhöhen. In-Prozess-Messungen der Ultraschallamplitude sollen Aufschluss über die Wechselwirkungen von Werkstück und Werkzeug geben.   Due to improved toughness and material-specific high hardness of technical ceramics, the machining of these brittle-hard materials is challenging. Therefore, precise and economical processing is mainly done by grinding. Ultrasonic support can increase the productivity of grinding processes. In-process measurement of ultrasonic amplitudes provides information about the interaction between the workpiece and the tool.

Schärfprozess beim Doppelseitenplanschleifen/Sharpening process during double face grinding - Influencing factors for sharpening in double face grinding with planetary kinematics

2020 ◽  
Vol 110 (06) ◽  
pp. 393-398
Author(s):  
Linus Lichtschlag ◽  
Eckart Uhlmann
Keyword(s):  
Influencing Factors ◽  
Scientific Investigation ◽  
High Quality ◽  
Grinding Processes ◽  
Surface Profiles ◽  
Face Grinding

Die Herstellung der Schneidfähigkeit der Schleifwerkzeuge bildet neben der Erzeugung ebener Schleifbelagsprofile die Grundlage effizienter und produktiver Schleifprozesse beim Doppelseitenplanschleifen mit Planetenkinematik. Zur wissenschaftlichen Durchdringung des meist erfahrungsbasiert ausgelegten, komplexen Schärfprozesses werden potenzielle Einflussgrößen und deren Effekte auf das Schärfergebnis systematisch analysiert.   The formation of the cutting ability of the grinding tools, in addition to the generation of flat grinding surface profiles, is the basis for high-quality and productive grinding processes in double face grinding with planetary kinematics. For the scientific investigation of the complex sharpening process, which are usually based on experience, potential influencing variables and their effects on the sharpening result are systematically analysed.

scholarly journals Diacetyl and 2,3-pentanedione in breathing zone and area air during large-scale commercial coffee roasting, blending and grinding processes

2017 ◽  
Vol 4 ◽  
pp. 113-122 ◽  
Author(s):  
Michael J. McCoy ◽  
Kimberly A. Hoppe Parr ◽  
Kim E. Anderson ◽  
Jim Cornish ◽  
Matti Haapala ◽  
...  
Keyword(s):  
Large Scale ◽  
Breathing Zone ◽  
Grinding Processes ◽  
Coffee Roasting

Near Optimal Grinding Process Design Using Neural Network and Real Coded Genetic Algorithm

2006 ◽  
Author(s):  
Indrajit Mukherjee ◽  
Pradip Kumar Ray
Keyword(s):  
Neural Network ◽  
Genetic Algorithm ◽  
Process Design ◽  
Back Propagation ◽  
Back Propagation Neural Network ◽  
Optimization Techniques ◽  
Grinding Process ◽  
Automotive Manufacturing ◽  
Grinding Processes ◽  
Real Coded Genetic Algorithm

A typical grinding process is an essential manufacturing operation and has been considered to be a precise and economical means of shaping the parts into the final products with required surface finish and high dimensional accuracy. The need to economically process hard and tough materials which can withstand varying stress conditions to ensure prolonged service life of parts has become a real challenge for researchers and practitioners. In this context, with the advance development and automation of grinding processes, use of appropriate modelling and optimization techniques has been continually emphasized. In view different types of end product and process requirements in grinding processes, optimization often becomes non-linear, multiple response constrained problem with multi-modal distribution of response quality characteristics. The objective of this study is to apply back propagation neural network modelling technique for prediction of a computer numeric-controlled (CNC) rough grinding process behaviour, and thereby determine overall near optimal process design using real coded genetic algorithm. The study proposes an integrated approach using back propagation neural network algorithm, composite desirability function, and real-coded genetic algorithm. The effectiveness and suitability of the approach is determined based on data analysis of a single-pass 6-cylinder engine liner CNC rough grinding (honing) operation in a leading automotive manufacturing unit in India.

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