• search hit 30 of 326
Back to Result List

Modeling of Transient Thermal Conditions in Cutting

  • The thermal conditions like the temperature distribution and the heat fluxes during metal cutting have a major influence on the machinability, the tool lifetime, the metallurgical structure and thus the functionality of the work piece. This in particular applies for manufacturing processes like milling, drilling and turning for high-value turbomachinery components like impellers, combustion engines and compressors of the aerospace and automotive industry as well as energy generation, which play a major role in modern societies. However, numerous analytical and experimental efforts have been conducted in order to understand the thermal conditions in metal cutting, yet many questions still prevail. Most models are based on a stationary point of view and do not include time dependent effects like in intensity and distribution varying heat sources, varying engagement conditions and progressive tool wear. In order to cover such transient physics an analytical approach based on Green’s functions for the solution of the partial differential equations of unsteady heat conduction in solids is used to model entire transient temperature fields. The validation of the model is carried out in orthogonal cutting experiments not only punctually but also for entire temperature fields. For these experiments an integrated measurement of prevailing cutting force and temperature fields in the tool and the chip by means of high-speed thermography were applied. The thermal images were analyzed with regard to thermodynamic energy balancing in order to derive the heat partition between tool, chips and workpiece. The thus calculated heat flow into the tool was subsequently used in order to analytically model the transient volumetric temperature fields in the tool. The described methodology enables the modeling of the transient thermal state in the cutting zone and particular in the tool, which is directly linked to phenomena like tool wear and workpiece surface modifications.
Bitte benutzen Sie diese Referenz, um auf diese Ressource zu verweisen:
https://doi.org/10.17265/2159-5275/2017.03.001

Export metadata

Additional Services

Metadaten
Author:Thorsten Augspurger, Fritz Klocke, Benjamin Döbbeler, Matthias Brockmann, Sascha Gierlings, Adriana Lima
DOI:https://doi.org/10.17265/2159-5275/2017.03.001
Parent Title (English):Journal of Mechanics in Engineering and Automation
Document Type:Article
Language:English
Date of Publication (online):2022/06/09
Year of first Publication:2017
Provider of the Publication Server:FH Münster - University of Applied Sciences
Release Date:2022/06/09
Tag:Infrarotkamera; Temperatur; Zerspanung
Issue:7-1
First Page:113
Last Page:120
Faculties:Maschinenbau (MB)
Publication list:Brockmann, Matthias
Licence (German):License LogoBibliographische Daten