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Internal thread processing machining process is a very important part of the development of modern processing technology, internal thread processing into machined in a very weak link. In this paper, the conventional processing method and vibration internal thread tapping, these processes have a problem: the process of tapping insurmountable dynamic loads, resulting in broken taps, blocking, abrasion, etc., while the processing quality is not high. By studying the concept of technological innovation, the basic principle, type, innovative approaches and tapping features, clear tapping innovative methods in technology push and demand-pull of the dual role model of innovation. Combined with the characteristics of the process of tapping through innovative thinking, use of modern design and innovative mechanical design, discusses a dynamic energy can convert the energy of tapping new ideas an impact on the internal thread machining tapping thought. For this new thread processing methods were studied. Shock tapping system consists of slider-crank mechanism and tapping units, tapping units and through the ball screw drive gear will hammer (slider) Taps linear motion into rotary motion. In a short time due to an impact in the agglomeration process large energy transfer to the tap, so the system can be adapted to shock when tapping tapping dynamic load. Depending on the mechanical design of various mechanical characteristics of the structure, completed the structural design of the impact of tapping. Tapping with a working cycle of the impact can be divided into four stages, air travel stage, a buffer stage, the tapping phase, return phase characteristics, and completed the impact of motion and force tapping unit calculations. In this paper, under the impact of innovative design made the appropriate tapping system, reasonable simplification, impact tapping system constructed a simplified physical model. In the optimization design theory, under the guidance establish appropriate objective function to determine the bound variables, and the preparation of the optimization process was solved on the computer, on the impact of the system has been optimized to obtain the optimal solution of the system. To make tapping unit (tapping device) parts of the structure is more reasonable, finite element analysis software ANSYS analysis theory and the main parts tapping device has been simplified solid modeling, meshing, force and constraint definitions . Finally, post-processing to obtain the stress-strain diagram structure, combined with the actual situation on the results are analyzed to make the structure more in line with job requirements, more reliable. Conclusions of this study the impact of tapping for improving and perfecting the techniques and methods have theoretical guidance. By optimizing the system and structural components of the finite element analysis, a more reasonable system parameters and structure size, right after the experimental stage to provide a more accurate theory.
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