An Appraisal of techniques and equipment for cutting force measurement
Faculty of Regional Professional Studies
Regional Professional Studies Deans Office
Current research focussed on the assessment of metal machining process parameters and on the development of adaptive control show that machine performance. work-piece and tool life, quality of machined surfaces, the geometry of cutting edges, and cutting conditions are closely related to the cutting forces. This information is of great interest to cutting tool manufacturers and users alike. Over the years there have been significant developments and improvements in the equipment used to monitor such forces. In 1930 mechanical gauges were replaced by resistance strain gauges and some 30 years later compact air gauge dynamometers were invented. Since this time intensive research has continued being directed towards developing new approaches to cutting force measurement. The Kistler Company, well known manufacturer of acceleration and piezoelectrical dynamometers worked in this field for more than three decades and developed vert sensitive devices. While leading manufacturing research laboratories are often equipped with this technology, classical electrical strain gauges and other dynanometers of individual designs are still commonly used in industry. The present paper presents data obtained using different techniques of force measurement in metal machining processes. In particular, areas of uncertainties, illustrated through results concerning the turning process. are analysed, leading to an appraisal of the current status of these measurements and their significance.