Study On Sharpening Appliance Of Turning Tool Based On Parallel Kinematic Mechanism

Tools occupy an important position in metal machining process system and the cuttingperformance directly affects the efficiency, quality and cost of machining, Tool sharpeninginclude it’s manufacturing and regrinding in use. The automation of Tool sharpening is aninevitable requirement for the further development of the manufacturing industry. From thegeneral External Turning Tool Sharpening principle, This paper mainly carried on the researchat following several respect:Analysis of the basic structural parameters of the turning tools, geometry Angle andedge grinding methods, coordinate system which based on the tool nose was set up. derivedthe equation of the flank of the turning tool,given posture transformation of each flank fromthe installation of the initial posture to the grinding position,which expressed by Using matrixand coordinate transform method.Closely combined with the need of posture adjustment in the blade grinding process, Apure rotation of the parallel mechanism are analyzed and summarized. Based on the type ofparallel mechanism, constitution principle of mechanism,Proposed a parallel mechanismwhich can realize spatial three rotational degrees of freedom. The mechanism has a simplestructure and it’s easy to control. Analyse kinematic characteristics of the mechanism. Theseanalysis result establish the theory base for the application of practice engineering.It’s easy to get the position of the inverse solution according to the mechanism structurefeatures in positional analysis of parallel mechanism,while the positive kinematics is morecomplex due to existing in solving multiple solution, Establish kinematics equations forpositive Solutions, find the bodies of Positive Solutions. And using the vector method, deducethe velocity mapping model and Jacobian matrix. then, velocity and acceleration problems areanalysed. Next, in order to verify the theoretical results. establish the model of the mechanismby using the SimMechanics toolbox in MATLAB Simulink,and make kinematic simulationThrough normalization of each size parameters, Analyze the effect of various parameterson the moving range of the platform. so that the design of appliance can meet the needs ofposture adjustment of the turning tool. after Determining the right size parameters of the appliance,design the important parts and use Pro/E create a virtual prototype model of themechanism. Finally set up inverse operation program based on MATLAB GUI and package itas an independent running programs.