| Aluminum alloy 6061 is a high quality and high strength alloy produced by heat treatment pre-tensioning process.It is not only widely used in aerospace and mechanical fields,but also has a very good prospect in the manufacture of micro molds.With the development of technology,precision processing and ultra-precision processing is more and more widely applied.The purpose of this paper is to explore the turning process of piece component in aluminum alloy 6061.The most important thing is to explore the cutting path and the influence of spindle speed and feed amount on the thickness of the piece component.The thickness prediction model of piece component was established,and the thickness of the piece component was predicted based on the cutting path and cutting parameters.In this paper,the theory of metal cutting and the present situation of domestic and foreign turning simulation are analyzed.Using NANOTECH 350 FG Moore ultra precision five-axis machine tool,the piece component processing experiment platform was built.With single point diamond cutting tool,the orthogonal test of piece component processing path,spindle speed and feed quantity is designed.The combination of the optimal section turning factors,the processing path,spindle speed 1400r/min and feed amount of 8mm/min,were obtained by experiment.The influence of three factors on piece component thickness was analyzed by using the method of extreme difference.The experimental results show that the influence of the machining path on the thickness of the piece component is the most obvious,the second is the feed quantity,and the main shaft speed is the least influence on the thickness of the piece component.Secondly,according to the experimental data,the piece component model was established by ABAQUS,a large general finite element analysis software,to obtain the difficult data in the experiment.In order to discuss the piece component processing method,the finite element analysis software is used to simulate the process of piece component turning.This method can be used to explore the influence of the turning path,spindle speed and feed on the thickness of the piece component during the process of processing,and also can analyze the stress and strain situation during the process of turning.Thirdly,on the basis of six groups of experiments,MATLAB is used to fit the test data to obtain the thickness prediction model of aluminum alloy 6061 and make a significant test of the model.Finally,the machining parameters were randomly selected for piece component processing,and the thickness of the piece component was measured by the Nikon altimeter.The measured value of the test is compared with the thickness value of the piece component thickness prediction model,and the results show that the deviation of the measured piece component thickness prediction model from the experimental measurement can be accurate to a level of 0.1?m.In this paper,the machining process of 6061 aluminum alloy single point diamond piece component was studied by combining the mechanical,material and numerical analysis,and the thickness prediction model was established and verified by experiments.It has certain guiding function for similar piece component turning. |
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