Torque Measuring Device’s Design And Perforation Design Of Main Drive Of Puncher Based On Finite Element Method

Currently research in large shaft torque measurement at home and abroad have verylittle, in order to make up for this deficiency, in this paper, with the main shaft of a piercerof seamless factory as the research object, self designed a snap ring torque monitoringdevice.The snap ring and shaft for contact analysis by Workbench software, when bolt ofsnap ring bear the largest pretightening force, the snap ring isn’t to get stuck in the shaftwell, to solve this problem, processing in the carrier on the inside of the clasp two smallslot, with the drive shaft two small convex interference, the transmission shaft and theclamping ring without slippage.Torque monitoring device should have good performance, this paper uses Workbenchas software tool, to optimize the structure and size of the transmission shaft monitoringdevice, and obtained the ideal size and structure of card ring, the ring has high sensitivity.The snap ring should easily be installed on the drive shaft, so it made improvementsrelated to structure, at the end of the ring, bolt connection is improved to pin connection,the other side does not change. In this paper, the relevant technical staff to the main driveof a seamless plant punch shaft of the measured data as the data support, the final design ofthe clamping ring is installed in the dangerous position of the driving shaft, analyzed sixdifferent torque statics by finite element software, shear strain data obtained through theMATLAB software for curve fitting, the fitting-curve is a straight line, proves that the snapring torque measuring device linearity is good, and the sensitivity of this device is0.5980/KM m.The shear strain curve measured curve intercepts a volatile, in the dynamic analysis ofWorkbench, loading approximate curve corresponding to the torque curve, the measuredshear strain and strain curve obtained has the same dynamic trend, describes the dynamicanalysis of finite element results obtained curves match the measured curve, proved the good dynamic performance of snap ring. Through the dynamics calculation, the naturalfrequency of the drive shaft is20.13Hz, the natural frequency of snap ring is26.85Hz,prove that the clasp can better reaction shaft for torsion.Through the analysis of fatigue life of drive shaft, get the fatigue cycle number of thedrive shaft is138040times; the clamp ring are arranged on the transmission shaft, thefatigue analysis on the whole, obtain the fatigue cycle number card ring for the159720time. The fatigue life of the card ring16%bigger than the fatigue life of the drive shaft, thesnap ring is mounted on the shaft of the time, the clasp can ensure continuous monitoring,and will not interrupt torque by ring occur fatigue damage monitoring.