Study On Mechanism And Technique Application Of The Low Frequency Vibration Tapping

In the last few years, because the material science flies to develop soon, thenew material that have the good machine and the physics functions flows outcontinuously now, and get the application in the each realm gradually. Theapplication of the high degree of hardness, the high strength metals material...etc.is increasingly extensive, but process the function because of these materials badly,become the applied main obstacle of expansion, particularly is these are difficult toprocess the material of inside the thread process is one of the work prefaces thatexists the serious problem in times gone by. Have the representative difficult toprocess the material,such as austenitic stainless steel, the titanium alloy...etc., theyhave the material strength high, process to harden the severity etc. characteristics,The widespread existence tapping torque in tapping process greatly , the tap easilydrive" bite the dead", easily collapse the blade and break etc. problem, particularlyis for the thread of the small diameter, almost can't tapping method to process withthe commonness, even can process unwillingly, process the efficiency also verylow, and the bad and rough degree of the thread teeth form anomaly, accuracythat offend to make is big. The vibration tapping to be a kind of new craft method,the thread tapping to have the good and applied foreground in resolve difficultlyprocess the small diameter of the material, which result in decrease the tappingtorque ,raising the tap life span , resolving the tap for traditional tapping to breakthe problem, economizing the cost, making the new machine material of metalalloy of titanium , stainless steel...etc. have the better and applied foreground.Vibration tapping and conventional tapping to have to slice to pare the mechanismdifferently at the same time, be advantageous to raising process the efficiency andprocess the accuracy of the thread inside . Therefore carry on the vibration tappingto process mechanism and its processing technology application studies to havethe important theories meaning and practical values.The northern and heavy work group company undertakes the some productof some engineering to research to manufacture the mission, that engineering is anational point engineering item, in order to carry out the total request of reducingin weight, an artillery design adopts the metal alloy of titanium ( TC4) to shake.The titanium metal alloy material useds for the artillery spare parts to belong to thefirst time still in the factory, tapping work preface to process particularly difficult.The metal alloy of titanium shake there is 44 of total the M5 ～ M16 threadbore on, at the early kind machine research to manufacture, because processing themetal alloy of titanium to shake the hour of a thread bore to tapping efficiencyand the tap life spans very low, serious influence research to manufacture the work.Set out physically from my company, draw lessons from the domestic andinternational advanced experience, mainly research to manufacture to the somepoint engineerings item medium, the metal alloy of titanium shakes a threadbore to process to tapping efficiency and the tap life span very low decisivemanufacturing craft technique hard nut to cracks, this text carries on followingseveral research works :1.Understood the present condition of vibration tapping research at home andabroad and the applied condition and the development trendses of vibrationtapping processing technology at home and abroad;2. Clarified the process of vibration tapping principle to combine in brief and insummary according to its basic principle, and introuduced the vibration tappingdevice, do the in great quantities on trial research and apply in produce physicallymedium;The experiment prove that that system has the of flap is big, thefrequency is high, the noise is small and operates simple, apply the scope wide, beeasy to maintenance and process high etc. of efficiency comprehensive. Tappingefficiency, tap life span, thread to process the quantity and apply the scope fromthe vibration up, that vibration tapping technique to arrive better level already.3.Analyzing the movement characteristics and the torque characteristic of the lowfrequency vibration tapping and Analyze the foundation of the vibration tappingthat the slices to pare the process up the slice of silk scraps formation mechanismand broke the scraps mechanism to carry on the more detailed analysis to thevibration, For go deep in to announce to public systematically to tap to process toslice the scraps formation mechanism, enrich the metals to slice to pare thetheories to have the certain theories meaning analysis.4. The craft parameter that vibration tapping mainly is to vibrate the frequency,flap and slice to pare the speed, to torque of the vibration tapping to have theimportance influence silkily, this text makes the theories to this research. Excellentturn these parameters, will improve the slice and pare result of the vibrationtapping.5. Axial force , radial force is influence process inside the thread accuracy ofimportant factor. The axial force is small, letting up the tap to squeeze towards isslice the tooth form, the tooth form half Cape error margin let up. radial forceis main factor that the thread expands the amount of bore that influence processtoward the resultant force unbalance;6.Analyzing the titanium metal alloy material function result in of tapping hardnut to crack, carring on the research to craft condition of the titanium metal alloyvibration tapping, The point offends the tap design and slices the functionmechanism and choices of pare the liquids to carry on to experiment the researchto the metal alloy of titanium, The vibration tapping increases the path thatcutting liquid get into cutting area, raising to permeate the result, vibrationtapping for the metal alloy titanium to choose cutting liquid formulationreasonably, having the good lubrication result, the result that lowers to torque isobviously.7. through process to experiment vibration tapping, excellent turned the stainlesssteel, the titanium metal alloy etc. the vibration tapping of four kinds of materialsM5 ～ M16 thread craft parameter, vibration tapping system have solved thehard problem about metal alloy of titanium shake very low to tappingefficiency and the tap life spans, have significant lower to torque , raise the threadto process the quantity and process the result that the efficiency and knifes havethe enduring degree.This topic carry on the theories and experiment research silkily aboutprocessed mechanism and its techniques application of the low frequencyvibration taping, obtaining as follows result:1) he vibration tapping have solved difficulty problem that difficult process thematerial can't adopt mobile tapping;2) The vibration tapping have the result about decreasing the torque andimproving thread to process the quantity significantly;3) The vibration tapping device in the servo electrical engineering type can becompetent the metal alloy of titanium , the austenitic stainless steel totapping ,offend the diameter as the M5 ～ M16, and have very high process theefficiency, the contented factory usage request.4) This vibration tapping technique has the characteristics of the flap is geat,the frequency is high, noise are low , have better level.5) The vibration tapping machine in general use strong, the parameter adjustmentis vivid, having the extensively applied foreground in weapon make professiondifficultly process material process.6) The vibration slices to pare technique is a kind of forerunner the manufacturingtechnique ,through this item of application study, make the group companycontrol the vibration tapping to slice to pare to process the characteristics andprocess the mechanism, resolve difficult process the material to offend the silkproblem, lay the technique foundation for the further expansion application thatthe vibration tapping system.