Adaptive Control System for Optimizing the ECG Process under the Overcut Constraint
One of the main limitations 1n Peripheral Electro Chemical Grinding (ECG) is the overcut phenomenon. The dominant parameters which govern the dimensions of the geometrical overcut are the voltage and the feedrate. This paper deals with the development of an empirical model which describes the overcut as a function of the dominant parameters. Pased on this model an adpative control system was built and experiments in Profile Peripheral ECG were carried out. A comparison of the results obtained with and without the adaptive control system is presented as well as the relationship between the side and bottom overcuts. According to the above an adaptive strategy to control the geometrical overcut in Profile ECG is suggested.
Peripheral electrochemical grinding of sintered carbides — Effect on surface finish
Abstract Peripheral electrochemical grinding was studied on eight typical commercially available sintered carbide tool grades, with emphasis on surface integrity. The different wheel-workpiece regions — the “contact” region, characterized by a simultaneous electrochemical and abrasive action, and the “after-wheel” region in which only the electrochemical aspect is present — were examined with a microscope. A wide range of practical working conditions was covered for additional data. Geometrical surface parameters such as overcut and surface roughness were related to those of the main process. Electrochemical surface parameters such as selective etching, oxide layer formation and local activation were evaluated by optical and scanning electron microscopy. An appropriate process mechanism was suggested on the basis of the results.
CNC Desktop Vertical Machining Bench Design and Cooling Fluid Application
Today's manufacturing technologies, the human work force is used and at least a minimum level of margin of error is used in CNC machines. Desktop CNC machine tools and CNC machine tools are developed in parallel with the development of personal computers. This study provides CNC training institutions for education, small and medium-sized enterprises for commercial purposes use the low-cost desktop machine has been designing and manufacturing of CNC vertical machining was carried out. Desktop CNC machine tools and production capacity to handle the kind of material was applied to increase the cooling fluid. Through A199 and Fe37 the cooling fluid application desktop CNC machine tools, such as processing of materials that are difficult to successfully processed. Keywords—CNC, Desktop CNC Machine, CNC Design