In-Process Recognition of Chip Forms Using Dynamic Component of Cutting Force

Abstract

In order to assure system reliability in FMS and unmannned machining, automatic sensing devices are required. The in-process recognition of chip forms is one of the most important technologies for the completely automatic operation of machine tools. In this study, the dynamic component of cutting force closely related to chip breaking has been measured to recognize chip forms. From the measured results on various cutting conditions and tool geometries, especially those having crater wear, the relationship between the chip form and the dynamic component of cutting force has been investigated. As a result, it can be verified that the dynamic component of cutting force adequately processed using the cut-off frequency (80-500 Hz) reflect exactly the conditions of chip breaking, and has a periodic component. Accordingly, it is possile to recognize the states of chip formation, and to tell which chips can be easily handled, by monitoring the maximum amplitude of the dynamic component of cutting force.