Fundamental Issues in Self-Excited Chatter in Grinding
MetadataShow full item record
The modelling of chatter in grinding is more complex than for metal cutting. This is because the number of parameters that influence the onset of chatter in grinding is daunting. Also, unlike metal cutting, the growth of chatter in grinding may take a significant time and so growth rates are also important. Initially the modelling of grinding chatter was simply an extension of that already developed for metal cutting. However this was soon found to be inadequate and the models were increased in complexity to include improved grinding force models, the contact stiffness of the wheel and regeneration of surface waves on both the work and wheel. Some solutions to chatter in grinding were also proposed. Most notably these included the use of varying speed and flexible grinding wheels. This position paper re-visits the almost universal assumption that grinding chatter is always regenerative. It is shown that a grinding force model for oscillating conditions, that has been experimentally confirmed, indicates that both torsional vibration and non-regeneration need to be considered. The consequences for current methods of chatter elimination are discussed.
Showing items related by title, author, creator and subject.
Error compensation of complex three-dimensional surfaces machined on computer-numeric-control grinding machine toolsRaoufinia, M.; Petrakov, Y.; Ataei, A.; Parand, Reza; Abou-El-Hossein, K. (2009)This study discusses the development of a method for compensating profile errors, resulting from the deviation of the actual grinding wheel radius from the calculated one. The study also elaborates on a control strategy ...
Xia, F.; Cole, C.; Wolfs, Peter (2006)The maximal stress and tangential surface forces at the wheel rail contact elliptic area are affected by the wheel rail contact dynamic load and creepages. Dynamic wheel load is related to the wagon dynamic system, track ...
Xia, F.; Cole, C.; Wolfs, Peter (2008)The maximal stress and tangential surface forces at the wheel-rail contact elliptic area are affected by the wheel-rail contact dynamic load and creepages. Dynamic wheel load is related to the wagon dynamic system, track ...