拉力試驗(yàn)機(jī)是拉力試驗(yàn)的主要機(jī)器，其拉力信號(hào)可用標(biāo)準(zhǔn)測(cè)力計(jì)或電校正兩種方祛進(jìn)行標(biāo)定，實(shí)質(zhì)上是對(duì)測(cè)量電路作調(diào)整標(biāo)定。標(biāo)準(zhǔn)拉力試驗(yàn)機(jī)的測(cè)量精度一般可達(dá)0.15%,將它串接到試驗(yàn)機(jī)的力傳感器后。先調(diào)整測(cè)量電路中相位平衡和幅值的“粗平衡”和“細(xì)平衡”后使電流輸出為零。
Tensile test machine is a main machine for tensile testing, the tension signal available standard dynamometer or electrical calibration two kinds of methods of calibration, is substantially adjusted calibration of the measuring circuit. The measurement precision can reach 0.15% standard tensile test machine, put it on a test machine of force sensor. Toadjust the measurement circuit of phase equilibrium and the amplitude of the "rough balance"and "fine balance" after the current output is zero.
再緩慢加載，當(dāng)拉力試驗(yàn)機(jī)達(dá)到標(biāo)淮測(cè)力計(jì)的力值時(shí)，力傳感器及共放大電路所顯示的值即滿載量程，調(diào)整測(cè)量放大器的放大倍數(shù)，使電壓值為一標(biāo)準(zhǔn)值，如10v.將此作為標(biāo)準(zhǔn)電壓。卸載并進(jìn)行數(shù)次復(fù)校后即完成滿量程的標(biāo)定，然后再作一定比例量程的線性檢查。
Then a slow loading, when the tensile testing machine to reach standard dynamometer force,force sensor and amplifier circuit displays the value of the full range, adjustment of magnification measuring amplifier, the voltage value is a standard value, such as 10v. as thestandard voltage. Uninstall and several second after the completion of the full range of linearcalibration, check and then for a certain proportion range.
由于同一臺(tái)試驗(yàn)機(jī)在不同的控制狀態(tài)、不同的試件時(shí)它的增益有所不同，此外還要根據(jù)精度和須寬等要求相應(yīng)調(diào)整有關(guān)參數(shù)，因此操作人員必須根據(jù)試驗(yàn)要求不斷調(diào)整有關(guān)參數(shù)，使之達(dá)到優(yōu)良的性能。現(xiàn)將試驗(yàn)機(jī)的電液控制系統(tǒng)合理的操作和調(diào)整簡(jiǎn)要介紹如下。
Because of the same test machine in the specimens with different control state, its gain is different, also according to the requirements of precision and wide adjustment shall becorresponding parameters, therefore the operator must constantly adjust the parametersaccording to the test requirements, so as to achieve excellent performance. The electro-hydraulic control operation and adjustment introduces reasonable system following testing machine.
開(kāi)機(jī)時(shí)應(yīng)先使控制臺(tái)通電，然后再啟動(dòng)液壓源，如果先啟動(dòng)液壓源而未使控制臺(tái)處于控制狀態(tài)，一方面由于伺服閥的零位偏置而使液壓油進(jìn)人液壓虹的一往，導(dǎo)致活塞向一個(gè)方向運(yùn)動(dòng)直到碰到缸蓋，有時(shí)甚至發(fā)生撞缸事故；另方面一些電子器件需要頂熱，尤其是應(yīng)變片的電路，需要預(yù)熱半小時(shí)以上才能使零位比較穩(wěn)定。因此開(kāi)機(jī)時(shí)首先應(yīng)使控制臺(tái)通電檢查各儀表是否都處在正常情況。對(duì)具有位置、力和變形控制等幾種控制狀態(tài)的試驗(yàn)機(jī)，應(yīng)先將控制狀態(tài)置于位置控制處，等全部啟功完畢后再根據(jù)需要轉(zhuǎn)換到相應(yīng)的控制狀態(tài)。
The boot should enable the console is energized, and then start the hydraulic source, if youstart the hydraulic source without the console is in control, on the one hand the hydraulic oilinto the hydraulic of the rainbow to the bias of the servo valve, causing the piston moving in one direction until it meets the head, sometimes even hit the cylinder accident; on the other hand, some electronic devices require the top heat, especially the circuit of strain gauge,preheat is required for more than half an hour to make zero stability. Therefore, the bootshould first make the console to check the power of each instrument are in normal condition.The testing machine with some position, force and deformation control state, should firstcontrol state in position control, etc. according to the needs of Qi Gong after conversion tothe corresponding control status.
拉伸試驗(yàn)機(jī) http://www.ksshiyanji.com/
