數(shu)(shu)控車(che)(che)床(chuang)主軸(zhou)(zhou)在(zai)運行(xing)(xing)過(guo)程中(zhong)，主軸(zhou)(zhou)潤滑不(bu)足、潤滑油粘稠、主軸(zhou)(zhou)加工(gong)、安裝等因素都會導致(zhi)(zhi)(zhi)軸(zhou)(zhou)承溫(wen)(wen)(wen)(wen)度(du)升(sheng)高(gao)。如(ru)果(guo)溫(wen)(wen)(wen)(wen)度(du)過(guo)高(gao)，可能(neng)會導致(zhi)(zhi)(zhi)材(cai)料膨脹，導致(zhi)(zhi)(zhi)機(ji)械間隙變小，從而導致(zhi)(zhi)(zhi)噪音(yin)和(he)機(ji)械損(sun)壞。主軸(zhou)(zhou)軸(zhou)(zhou)承的(de)溫(wen)(wen)(wen)(wen)度(du)可以通(tong)過(guo)測量軸(zhou)(zhou)承在(zai)運行(xing)(xing)過(guo)程中(zhong)的(de)溫(wen)(wen)(wen)(wen)升(sheng)來監(jian)測，看(kan)看(kan)是否正常。數(shu)(shu)控車(che)(che)床(chuang)軸(zhou)(zhou)承溫(wen)(wen)(wen)(wen)度(du)通(tong)常限制(zhi)(zhi)在(zai)≤45℃的(de)溫(wen)(wen)(wen)(wen)度(du)升(sheng)高(gao)范(fan)圍內。在(zai)監(jian)測過(guo)程中(zhong)，如(ru)果(guo)發現軸(zhou)(zhou)承溫(wen)(wen)(wen)(wen)度(du)>70℃-80℃，應立(li)即停止檢查。數(shu)(shu)控車(che)(che)床(chuang)的(de)安裝和(he)布(bu)線可以利用熱(re)敏電阻、多通(tong)道數(shu)(shu)字(zi)儀(yi)表和(he)PLC控制(zhi)(zhi)系(xi)統的(de)組合(he)來實(shi)現軸(zhou)(zhou)承溫(wen)(wen)(wen)(wen)度(du)檢測。在(zai)主軸(zhou)(zhou)的(de)前(qian)、中(zhong)、后軸(zhou)(zhou)承位(wei)置(zhi)安裝四個熱(re)敏電阻。PLC控制(zhi)(zhi)系(xi)統采集四個測量點的(de)溫(wen)(wen)(wen)(wen)度(du)，并(bing)監(jian)測不(bu)同位(wei)置(zhi)軸(zhou)(zhou)承的(de)具體溫(wen)(wen)(wen)(wen)升(sheng)。

控(kong)制(zhi)(zhi)要求及原理(li)：溫(wen)度控(kong)制(zhi)(zhi)系統(tong)(tong)采(cai)用(yong)(yong)熱阻測量測點溫(wen)度，采(cai)用(yong)(yong)多(duo)通道數字儀(yi)表(biao)顯(xian)(xian)示軸(zhou)承溫(wen)度。PLC實現(xian)參數設置、遠程(cheng)監(jian)控(kong)、數據存(cun)儲、報(bao)警處(chu)理(li)等功能(neng)。在(zai)實際編(bian)(bian)程(cheng)過(guo)程(cheng)中(zhong)，不(bu)需(xu)要編(bian)(bian)寫(xie)程(cheng)序來讀取(qu)和寫(xie)入PLC寄存(cun)器。通過(guo)數據定(ding)義(yi)的(de)方法，定(ding)義(yi)I/O變(bian)量后，數控(kong)車床(chuang)變(bian)量名稱直接用(yong)(yong)于系統(tong)(tong)控(kong)制(zhi)(zhi)、操作顯(xian)(xian)示、數據記錄(lu)、報(bao)警等。系統(tong)(tong)設置一個啟(qi)動按鈕(niu)來啟(qi)動控(kong)制(zhi)(zhi)程(cheng)序，并設置兩個紅(hong)(hong)色和綠(lv)色指示燈來顯(xian)(xian)示溫(wen)度狀態。四個測量點的(de)溫(wen)度在(zai)要求的(de)范(fan)圍(wei)內，且(qie)綠(lv)燈亮(liang)，表(biao)示主(zhu)軸(zhou)可(ke)以正常(chang)工作；當某個測點的(de)溫(wen)度達(da)到上限(xian)時，即使(shi)主(zhu)軸(zhou)轉速不(bu)符(fu)合要求，紅(hong)(hong)燈也會亮(liang)起(qi)，數控(kong)車床(chuang)上的(de)顯(xian)(xian)示器會發出與軸(zhou)承對應的(de)警報(bao)。