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Title: Control and measurement of clamping and machining forces in intelligent fixturing
Keywords: Cutting force model, clamping force, instrumented locators, spatial stability analysis, workspace envelope, direct torque control.
Issue Date: 21-Nov-2003
Citation: RAWTHER ASHIQUL HAMEED (2003-11-21). Control and measurement of clamping and machining forces in intelligent fixturing. ScholarBank@NUS Repository.
Abstract: The thesis presents a novel force measurement technique in a fixturing arrangement with instrumented locators. The developed system aims to overcome the problems associated with the dynamometer and this study could lead to the feasibility of fixturing set-ups with instrumented locators as a viable alternative than a dynamometer. Attempt is also made to design a simple controllable electro-mechanical clamping element using the principle of direct torque control of a permanent magnet DC motor. The torque is controlled in the region of zero speed of the motor, which keeps wear and tear to a minimum. An optimisation method to determine the minimum optimal clamping force using linear programming is derived. This technique aims to simplify the process of optimisation and provide a methodology to find an estimate of the minimum clamping force through an iterative procedure so that control of clamping forces can be realised outside a laboratory environment.
Appears in Collections:Master's Theses (Open)

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