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零部(bu)件加(jia)工(gong)(gong)(gong)精度(du)(du)(du)的(de)(de)(de)(de)影(ying)響問題(ti)，在液(ye)壓缸(gang)(gang)的(de)(de)(de)(de)制(zhi)(zhi)造過程中(zhong)應嚴格控制(zhi)(zhi)缸(gang)(gang)體(ti)內(nei)(nei)(nei)壁和活塞桿表面加(jia)工(gong)(gong)(gong)精度(du)(du)(du)，特(te)別是(shi)幾何精度(du)(du)(du)，尤其直(zhi)線(xian)(xian)度(du)(du)(du)是(shi)關鍵(jian)，在國內(nei)(nei)(nei)加(jia)工(gong)(gong)(gong)工(gong)(gong)(gong)藝中(zhong)，HSG型(xing)(xing)工(gong)(gong)(gong)程用液(ye)壓缸(gang)(gang)廠，活塞桿表面的(de)(de)(de)(de)加(jia)工(gong)(gong)(gong)基(ji)本上是(shi)車后(hou)磨(mo)削(xue)，保證直(zhi)線(xian)(xian)度(du)(du)(du)問題(ti)不大，HSG型(xing)(xing)工(gong)(gong)(gong)程用液(ye)壓缸(gang)(gang)定制(zhi)(zhi)，但對于缸(gang)(gang)體(ti)內(nei)(nei)(nei)壁的(de)(de)(de)(de)加(jia)工(gong)(gong)(gong)，其加(jia)工(gong)(gong)(gong)方法(fa)很(hen)多，有鏜削(xue)-滾壓、鏜削(xue)-珩(heng)(heng)(heng)磨(mo)、直(zhi)接珩(heng)(heng)(heng)磨(mo)等(deng)，HSG型(xing)(xing)工(gong)(gong)(gong)程用液(ye)壓缸(gang)(gang)價格，但由(you)于國內(nei)(nei)(nei)材料(liao)的(de)(de)(de)(de)基(ji)礎水(shui)平(ping)較(jiao)國外(wai)有差距，管材坯料(liao)直(zhi)線(xian)(xian)度(du)(du)(du)差，壁厚不均勻、硬(ying)度(du)(du)(du)不均勻等(deng)因素，往(wang)往(wang)直(zhi)接影(ying)響缸(gang)(gang)體(ti)內(nei)(nei)(nei)壁加(jia)工(gong)(gong)(gong)后(hou)的(de)(de)(de)(de)直(zhi)線(xian)(xian)度(du)(du)(du)，因此建議采用鏜削(xue)-滾壓、鏜削(xue)-珩(heng)(heng)(heng)磨(mo)工(gong)(gong)(gong)藝，如直(zhi)接珩(heng)(heng)(heng)磨(mo)，則必須首先提(ti)高(gao)管材坯料(liao)的(de)(de)(de)(de)直(zhi)線(xian)(xian)度(du)(du)(du)。

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　　在允許的(de)情況下，液(ye)壓缸(gang)的(de)缸(gang)體(ti)壁厚安全系(xi)數盡量選(xuan)大一(yi)些，使缸(gang)體(ti)厚壁增加，特別是高壓工況下使用的(de)油缸(gang)，以減小油壓下的(de)缸(gang)體(ti)變形，變形后的(de)缸(gang)體(ti)也會引起液(ye)壓缸(gang)低速(su)爬行(xing)。

(1)液壓缸(gang)(gang)內(nei)部(bu)泄漏(lou)。液壓缸(gang)(gang)內(nei)部(bu)泄漏(lou)包括液壓缸(gang)(gang)體密封(feng)、活塞(sai)(sai)桿與密封(feng)蓋密封(feng)及活塞(sai)(sai)密封(feng)均(jun)磨損過量等(deng)引起的泄漏(lou)。

活塞桿與(yu)密(mi)封蓋密(mi)封泄漏的原(yuan)因是(shi)，臨沭HSG型工程用液壓缸，密(mi)封件折皺、擠壓、撕裂、磨損、老化、變質、變形等，此時應(ying)更換新的密(mi)封件。

活(huo)塞密(mi)封過量磨(mo)損的(de)主要(yao)原(yuan)因是速(su)度控制閥調節不當(dang)，造成過高(gao)的(de)背(bei)壓(ya)(ya)以(yi)及密(mi)封件安裝不當(dang)或液(ye)壓(ya)(ya)油(you)污染。

擺動式液壓缸

擺動(dong)(dong)(dong)(dong)式液壓缸是(shi)輸出扭矩并實現(xian)往復運動(dong)(dong)(dong)(dong)的(de)執行元件，有單葉片(pian)(pian)、雙葉片(pian)(pian)、螺(luo)(luo)(luo)旋(xuan)(xuan)(xuan)擺動(dong)(dong)(dong)(dong)等幾種(zhong)形(xing)式。葉片(pian)(pian)式式：定子(zi)(zi)塊固定在(zai)缸體上，而葉片(pian)(pian)和轉(zhuan)子(zi)(zi)連(lian)接在(zai)一起。根(gen)據進油方向，葉片(pian)(pian)將帶動(dong)(dong)(dong)(dong)轉(zhuan)子(zi)(zi)作往復擺動(dong)(dong)(dong)(dong)。螺(luo)(luo)(luo)旋(xuan)(xuan)(xuan)擺動(dong)(dong)(dong)(dong)式又分單螺(luo)(luo)(luo)旋(xuan)(xuan)(xuan)擺動(dong)(dong)(dong)(dong)和雙螺(luo)(luo)(luo)旋(xuan)(xuan)(xuan)兩種(zhong)，現(xian)在(zai)雙螺(luo)(luo)(luo)旋(xuan)(xuan)(xuan)比較常用(yong)，靠兩個(ge)螺(luo)(luo)(luo)旋(xuan)(xuan)(xuan)副降(jiang)液壓缸內活塞的(de)直(zhi)線(xian)運動(dong)(dong)(dong)(dong)轉(zhuan)變為直(zhi)線(xian)運動(dong)(dong)(dong)(dong)與自轉(zhuan)運動(dong)(dong)(dong)(dong)的(de)復he運動(dong)(dong)(dong)(dong)，從而實現(xian)擺動(dong)(dong)(dong)(dong)運動(dong)(dong)(dong)(dong)。