圓臺平面磨床的核(he)心部(bu)(bu)件(jian)(jian)性能直接決(jue)定設備(bei)整體加工(gong)(gong)能力，主(zhu)軸(zhou)(zhou)作(zuo)為核(he)心運動(dong)部(bu)(bu)件(jian)(jian)，其精度與剛性至(zhi)關重要。主(zhu)軸(zhou)(zhou)采用(yong) 38CrMoAlA 合(he)金鋼材，經滲氮處理(li)，表面硬度達 HV900 以(yi)上，配合(he) P4 級高密度軸(zhou)(zhou)承(cheng)，徑向跳動(dong)≤0.003mm，軸(zhou)(zhou)向竄(cuan)動(dong)≤0.002mm，若(ruo)主(zhu)軸(zhou)(zhou)精度下降 1μm，工(gong)(gong)件(jian)(jian)加工(gong)(gong)精度將下降 2-3μm，目前主(zhu)軸(zhou)(zhou)壽命可達 10000 小時以(yi)上，劣質主(zhu)軸(zhou)(zhou)壽命僅為其 1/3。

工(gong)(gong)作臺是(shi)承(cheng)(cheng)載(zai)工(gong)(gong)件的(de)關鍵部件，采用 HT300 高度(du)(du)鑄鐵，經人工(gong)(gong)時(shi)效與振(zhen)動(dong)時(shi)效雙重處理，內應(ying)力去除率達(da) 98%，臺面(mian)平(ping)面(mian)度(du)(du)誤(wu)(wu)差(cha)≤0.005mm/1000mm，工(gong)(gong)作臺直徑通常為 500-1600mm，承(cheng)(cheng)載(zai)量(liang) 500-5000kg，臺面(mian)表(biao)面(mian)粗糙度(du)(du) Ra0.8μm，確保工(gong)(gong)件定(ding)位穩定(ding)，若工(gong)(gong)作臺平(ping)面(mian)度(du)(du)誤(wu)(wu)差(cha)超 0.01mm，工(gong)(gong)件平(ping)行度(du)(du)誤(wu)(wu)差(cha)將增加 50%。

液壓(ya)(ya)(ya)系統為(wei)工(gong)(gong)作臺(tai)進(jin)(jin)給(gei)提供動(dong)力，由液壓(ya)(ya)(ya)泵、溢流閥(fa)、油(you)缸等(deng)組成(cheng)，液壓(ya)(ya)(ya)泵額定壓(ya)(ya)(ya)力 3.5MPa，流量 25L/min，確保(bao)工(gong)(gong)作臺(tai)進(jin)(jin)給(gei)速(su)度穩(wen)定在 1-50mm/min，速(su)度波動(dong)≤±0.02mm/min，液壓(ya)(ya)(ya)油(you)清(qing)潔度需達(da)到(dao) NAS 8 級，若油(you)液污染，將導(dao)致進(jin)(jin)給(gei)卡頓，增加 20% 的(de)加工(gong)(gong)誤(wu)差(cha)。

目前，山東臨磨采用核(he)心部件的圓臺平面(mian)磨床，加工合(he)格率可達 99%，設備(bei)故障率降低 40%，其在市(shi)場中的溢(yi)價能(neng)力顯著高于普通設備(bei)。