Grinding force dynamometer technical review report
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This document discusses the use of dynamometers to measure cutting forces in machining operations. Dynamometers cannot directly detect or measure forces but can quantify them by measuring effects like deflection, deformation, or strain. The document focuses on using a grinding dynamometer, which measures the radial and feed forces between a grinding wheel and workpiece. It describes making an octagonal aluminum block to fit the dynamometer and measuring forces during grinding with different materials, wheel sizes, and motor speeds.
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Grinding force dynamometer technical review report
- 2. Dynamometer are diveces used to measure the cutting force in machining operation. The cutting force cannot be detected or quantified directly but their effect can be seen using transducer. A force which can neither be seen nor be gripped but can be detected and also quantified respectively by its effect and the amount of those effect(on some material)like elastic deflection,deformation,strain etc.
- 3. Arectangular aluminium block is roughly made for maximum stock removal and then machined to get the desired size. In making the octagonal rings,two holes are drilled by radial driling machine followed by boring operation. An aluminium block is cut inti an octagonal shape. The slit between the horizontal members is made using slitting saw. Two blind holes are made on the dynamometer to fit with the vice by nut bolt system.
- 4. Grinding dynamometers are used to measure the radial and feed forces between grinding wheel and the workpiece in a plunge surface grinding. The essential reuirements of dynamometer are its mechanical rigidity and sensitivity. Two components of force namely radial and feed are measured with the help of a grinding dynamometer. Feed forces are due to the cutting action of grinding wheel radial forces are due to workpiece motion.
- 8. The materials used for experimental studies aretungsten carbide and stainless steel. The wheel used is adiamond - impregnated metal-bonded grinding wheel150 mm in diameter, 9 mm in width. The width of thelayer containing diamonds is 3 mm and abrasive gritsize is 80/100. A DC motor (3 Phase, 1.5/2 kW/hp,1400 rpm) was employed to rotate the grinding wheel.The total minimum load has been found to be 183.7N.Maximum value, the total load would be calculated as 473.5 N.
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