高速(su)電主(zhu)軸(zhou)運轉時存(cun)在震動(dong)現象，震動(dong)幅度過大還(huan)必須警惕是否是電主(zhu)軸(zhou)出了問題。大家知道嗎？簡(jian)單的高速(su)電主(zhu)軸(zhou)震動(dong)也是有(you)分類的。
跟(gen)隨小(xiao)編(bian)一起來看看，電主(zhu)軸的震(zhen)動分哪幾種吧。
一(yi)個(ge)經過(guo)精平(ping)衡的(de)轉(zhuan)(zhuan)軸(zhou)置于支架上，若(ruo)以垂直于轉(zhuan)(zhuan)軸(zhou)的(de)力沖擊它(ta)，轉(zhuan)(zhuan)軸(zhou)將(jiang)(jiang)產(chan)生(sheng)振(zhen)動(dong)(dong)(dong)，這(zhe)種振(zhen)動(dong)(dong)(dong)稱(cheng)為自(zi)激振(zhen)動(dong)(dong)(dong)。它(ta)的(de)振(zhen)動(dong)(dong)(dong)頻(pin)率(lv)(lv)稱(cheng)之為自(zi)激振(zhen)動(dong)(dong)(dong)的(de)固有頻(pin)率(lv)(lv)丘。自(zi)激振(zhen)動(dong)(dong)(dong)是高(gao)速旋轉(zhuan)(zhuan)體自(zi)身的(de)固有屬性。任何回轉(zhuan)(zhuan)體，即使經過(guo)精心(xin)平(ping)衡，也總會產(chan)生(sheng)一(yi)定偏心(xin)質量(liang)。當轉(zhuan)(zhuan)軸(zhou)以頻(pin)率(lv)(lv)廠高(gao)速旋轉(zhuan)(zhuan)時，轉(zhuan)(zhuan)軸(zhou)偏心(xin)質量(liang)產(chan)生(sheng)的(de)轉(zhuan)(zhuan)矩(ju)將(jiang)(jiang)迫使轉(zhuan)(zhuan)軸(zhou)產(chan)生(sheng)周期性振(zhen)動(dong)(dong)(dong)，這(zhe)種振(zhen)動(dong)(dong)(dong)稱(cheng)為強迫振(zhen)動(dong)(dong)(dong)。強迫振(zhen)動(dong)(dong)(dong)的(de)振(zhen)動(dong)(dong)(dong)頻(pin)率(lv)(lv)是外(wai)力使轉(zhuan)(zhuan)軸(zhou)產(chan)生(sheng)的(de)振(zhen)動(dong)(dong)(dong)。
