Research On Deviation And Correction Technology Of Axial Deviation Of Deep Hole Machining

With the continuous development of machinery industry and market diversification demand,new material with high strength,high hardness of the deep hole processing,heterosexual complex parts of the deep hole processing,high precision parts deep hole processing appear constantly,such as the difficulty of processing is becoming more and more big,the deep hole processing is put forward higher request,and deep hole machining hole axis deflection is a technical problem currently existing in the deep hole processing.Deep hole processing environment and the special nature of the processing technology,making the deep hole in the process of processing will inevitably be difficult to predict hole axis deflection problem,can solve the problem of deep hole machining hole axis deflection,directly affect the deep hole The processing accuracy and quality,Therefore,on the premise of ensure the high efficiency of the deep hole processing,how to ensure that in the process of deep hole machining hole axis deviation,is the key to improve the quality of deep hole machining precision.This paper expounds the research background and significance of deep hole machining technology,and briefly describes the characteristics of different deep hole machining system and the main problems of deep hole machining;Analysis the mechanism of deep hole machining hole axis deflection and influence factors of eccentric respectively.Also analysis the guide sleeve and drill pipe stiffness caused drill pipe axis deflection of two kinds of theoretical models and hole deflection differential equation,and concluded that hole axis deviation and the relationship between the parameters;Also summarized the control of deep hole machining hole axis deflection method,including deflection prevention before the deep hole processing,new squeeze film damper outside force rectifying deviation and the external force correction of the workpiece attachment;And the design of the correction drill pipe is discussed.The feasibility of the scheme is discussed.At the same time,the structure of the drill pipe is designed,including the selection of the cone-shaped structure of the drill pipe,the determination of the supporting position,To calculate the force,and through the model simulation analysis and experimental verification,obtained by the design of the correction drill pipe has a certain corrective effect.Based on the CFD theory,the FLUENT hydrodynamic software was used to study the effects of the diagonal and the eccentricity And the corresponding boundary conditions are set.The flow field of the gap cutting fluid between the outer wall of the conical body and the inner wall of the deep hole is simulated and analyzed.The pressure distribution of the model and the simulation value of the partial model And the influence of different oil supply pressure on the bearing capacity of the driller in the deep hole machining system was analyzed.The design of the correction drill pipe is of great significance to reduce the deflection of the hole in the deep hole.