| In the rough milling process of 3C industry, a relatively conservative feed rate is given based on experiences, thus there are still space for increasing efficiency. Thus, in order to control and reduce costs, there are urgent demands on increasing efficiency of manufacture. Currently, most studies about the promotion of efficiency are based on solid modeling and emulation, however, there are some dilemmas in those methods, such as complexity of modeling process as well as solving process and the result is highly depended on the accuracy of modeling.Aiming at avoiding troubles mentioned before, a new method of promoting efficiency of manufacture is proposed in this paper, which is based on the study on loading current of spindle. This this method, fluctuations of spindle current in instruction domain are used to reflect fluctuations of material removing rate. Model of feed rate optimization is modeled via the feedback of spindle current in instruction domain. Finally realize reduction of feed rate in high-load area to balance tool load and improvement of feed rate in low-load area to raise efficiency.In implement of this method, there are some special points that current changed suddenly, which is the key points to verify validity of results. A huge current will come when the spindle is on, a way to block those current is proposed in this paper.A software based on methods mentioned before is developed in the environment of Visual Studio 2010, which aims at offering a visual instrument to optimize the cutting parameters. The plan of functions and modules are made, key points are discussed in the paper.Additionally, the method brought up in the paper has been practiced in several real manufactures to verify the validity. 10%-25% of efficiency is promoted in rough milling as well as 5%-10% is increased in finish milling. It is proved that the method proposed is valid in increasing efficiency of machining. |
PDF Full Text Request