Study On An Electric Clamp And Its Original Axis Force On A Testing Machine

The testing machine is one detect instrument to test different kinds ofmaterial's performance . Cuneiform pull clamp is one important part of theTesting machine, With the expeditiousness develop of national economic ,every industry for their product's quality and credit standing are demandTesting machine more and more , at the same time , the Testing machinemust be adapt to the develop of era. The Cuneiform pull clamp as oneimportant part of the Testing machine, must to content the need of era.The letterpress is mostly to study electric clamp and original axis force oftesting machine.At first, The letterpress is expatiate on the actuality and develop ofcuneiform pull clamp by the angle, the electric clamp and the original axisforce.The angle, it mostly introduce the sorts of clamp, and academic analysisand practice analysis of the angle, and the relation between many factor oneffect the credibility clamp of the cuneiform clamp.The electric clamp, it introduce the theory of DC electromotor on thisstructural and it is the instantaneous over loading characteristic. By theinstance of the DC electromotor on locked rotor , Adjust the armaturecurrent under the max current ,and then adjust the excitation current tocontrol the magnetic field degree. By this to control the torsional moment Bythe test of DC electromotor and over loading characteristic of DCelectromotor and temperature on the DC electromotor. Discuss the viable ofover loading on DC electromotor, and the feasibility of the electric clamp.And then ,The original axis force, by academic analysis and test validate,sum up three kinds factors the angle, the middle tache distortion, the firm ofthe clamp on original axis force,. The axis force of the Cuneiform pull clampis decided by the three kinds of action . and the axiality is not the importantaction. and bring forward the logical project.Get the conclusion after researching large quantities test data1.The angle of the clamp is close but different between the academicanalysis and practice analysis.2.The credible clamp is bear on original clamp force and the angle andthe original contact surface between the nip block and sample.3.The instantaneous over loading characteristic of DC electromotor canwork under the locked rotor short time , the current of excitation can exportthe best torsional moment by adjust the current foundation the magneticfield strength to satisfied the different design request .4.The instantaneous over loading characteristic of DC electromotor canbe used on electric clamp.5.The angle, the middle tache distortion, the firm of the clamp on originalaxis force is the three kinds factor of the original axial force.6.The original axis force can be controlled by change the three kindsfactor.The letterpress by investigate and survey and consult and then gatherthe information do account test , Carried out plenty of test works in thispaper, offer many reliable experimental data. These experimental data ishelpful for studying and designing DC electromotor and on the cuneiformpull clamp, These experimental data is helpful for studying and designingcuneiform pull clamp .and improve the level of testing machine to adapt tothe community develop.