Energy and temperature analysis in grinding

摘要

Energy consumption and dissipation are discussed, leading into a thermal model for grinding. The analysis developed over many years applies to shallow-cut conventional grinding processes and also to deep grinding processes. Energy analysis provides insights into the grinding process and suggests avenues for process improvements. The thermal model provides a good estimation of contact temperatures as well as temperatures on the finish surface. Case studies are presented to demonstrate how operational efficiency, component quality and removal rates are affected by process conditions. Examples are included for High Efficiency Deep Grinding (HEDG). HEDG is defined as deep grinding at high workspeeds and very high removal rates. Tawakoli, Klocke The contact between the workpiece and wheel is represented as a circular arc. Experiments show that high removal rates and absence of thermal damage can be achieved. HEDG can achieve low specific grinding energy compared with shallow grinding and creep grinding. The chips take away most of the heat generated in the grinding process. As in creep grinding, burn-out of the coolant causes a steep rise in contact temperature of the workpiece.