Abstract:
The measurement of cutting forces in metal cutting is essential to estimate the power requirements, to design the cutting tool and to analyze machining process for different work and tool material combination. Although cutting forces can be measured by different methods, the measurement of cutting forces by a suitable dynamometer is widely used in industrial practice. Mechanical and strain gauge dynamometer are most widely used for measuring forces in metal cutting. The principle of all dynamometers is based on the measurement of deflections or strain produced from the dynamometer structure from the action of cutting force.
In this experimental study, a lathe tool dynamometer is used to measure cutting force, feed force and thrust/Axial force by using strain gauge accelerometer. The dynamometer is a 500kg force 3-component system. The dynamometer is connected to a data acquisition system. As the tool comes in contact with the work piece the various forces developed are captured and transformed into numerical form system. In this experimental work three forces of aluminum, brass and stainless steel materials have been noted down. In this study single point cutting tools with different rake angles, are used to measure forces on these materials with variation in speeds and depth of cut. Graphs were drawn on how these forces vary due to variation in speed and rake angles.
Keywords: Lathe tool dynamometer, Aluminum, brass, stainless steel, single point cutting tools with different rake angles