Abstract
This paper presents a new model that relates thermal aspects with process kinematics in face grinding applications with straight wheels. Changes in chip thickness along the contact area were considered in the model, which allows for taking into account local thermal effects. The model was validated through grinding tests conducted with conventional alumina wheels. Power signals were used as input for the model. Thermal damage on the ground surface was detected using eddy current technology and revealed by acid etching. Both the model and experimental findings provide the basis for developing an approach for process optimization.
Highlights
IntroductionFace is aacritical criticalprocess process manufacturing, is employed the production ofFace grinding grinding is in in manufacturing, andand is employed in theinproduction of several several types of workpieces forautomotive, the automotive, aerospace, energy generation sectors.Motor types of workpieces for the aerospace, and and energy generation sectors.Motor and and transmission shafts of hardened steel are typical workpieces for which this operation is transmission shafts of hardened steel are typical workpieces for which this operation is used. used.Depending geometry, face heights cancan varyvary from less less thanthan1 mm more than 200Dependingon onthe theworkpiece workpiece geometry, face heights from 1 to mm to more thanmm.In addition, CBN, diamond or conventional abrasive wheels can be used for face mm
Linking the kinematics to a specific energy expression based on the aggressiveness concept developed by Badger in [7], and in [8] a thermal model for face grinding with straight wheels has been developed. This allows for further analysis and a better understanding of the influence of contact geometry and process kinematics on thermal behavior and grinding wheel wear
The present study aimed to provide both a thorough characterization of kinematics removal mechanisms and a detailed temperature simulation of face grinding applications with straight wheels
Summary
Face is aacritical criticalprocess process manufacturing, is employed the production of. In [4], Drazumerik focused on optimizing the process through a combination of axial and radial feeds by establishing a maximum temperature limit for each of the three studied grinding zones (the diameter, the radius, and the face) For this purpose, a temperature simulation model was developed based on the estimation of an aggressiveness-driven specific energy. Linking the kinematics to a specific energy expression based on the aggressiveness concept developed by Badger in [7], and in [8] a thermal model for face grinding with straight wheels has been developed This allows for further analysis and a better understanding of the influence of contact geometry and process kinematics on thermal behavior and grinding wheel wear
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