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With the development of industrialization and manufacturing advances , deep hole drilling machining position occupied more and more important , deep hole machining in industrial production is also increasing . Process problems such as oriented , Chip , cooling and lubrication machining of deep holes , there is likely to cause the drill bit card , easy to break , plus small drill adverse conditions , has seriously hampered the efficiency of drilling and deep the development of the industry . In order to solve these technical problems in the deep hole machining process , this paper summarizes the basis of the study of the deep hole at home and abroad on the design of a new kind of drilling deep holes adaptive drive the drill motor current induced voltage detection value size as feed the judgment basis achieve adaptive adjustment purposes ; developed its own deep-hole drilling platform , the actual drilling experiment achieved the desired effect . First twist drill structural analysis, mathematical models , pointed out that the impact factor of the deep hole drilling to identify the type of the structure of the twist drill for deep hole drilling , finite element simulation analysis , the analysis in the process of drilling holes deep , influencing factors such as stress and torque . Second , based on the foregoing analysis , the experimental platform designed to program the system design . Drill - drive motor current sensing voltage value control the amount , according to the size of the transient voltage value to adjust the feed rate , the drill has been working in the best working condition , prevent the emergence of a drill bit excessive force phenomenon . Experimental platform AT89C55 microcontroller as the core , by the A / D, the zero-crossing comparator , precision rectifier , voltage acquisition circuit . Finally, drilling experiment , to simulate the actual processing of the plant . The experimental results show that this system can smooth control process , improve processing efficiency, and at the same time be able to play a very good drill bit protective effect . The subject to achieve the intelligent control of deep hole drilling process , improved drilling efficiency and automation ; effective protection of the drill bit to prevent the drill abnormal and workpiece the adverse impact of the factors of the process , the prevention of the easy card easily broken and other anomalies appear in the drilling process , to ensure the stability and reliability of the drilling process .
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