切(qie)(qie)分導(dao)(dao)衛(wei)位于切(qie)(qie)分機架的出口，三(san)切(qie)(qie)分導(dao)(dao)衛(wei)貴嗎 ，由插件(jian)、切(qie)(qie)分導(dao)(dao)衛(wei)體(ti)、分料盒組成，

小(xiao)型廠的切(qie)(qie)分軋制依靠切(qie)(qie)分導衛來完成對(dui)軋件(jian)的切(qie)(qie)分，常州三切(qie)(qie)分導衛，因而切(qie)(qie)分輪(lun)成為切(qie)(qie)分導衛較為重要的部件(jian)。

熱軋(ya)(ya)橢圓(yuan)(yuan)軋(ya)(ya)件(jian)(jian)(jian)進(jin)口滾(gun)動導(dao)(dao)衛(wei)屬(shu)于金(jin)屬(shu)的(de)軋(ya)(ya)制，尤其涉及金(jin)屬(shu)軋(ya)(ya)件(jian)(jian)(jian)的(de)矯(jiao)直(zhi)、導(dao)(dao)向(xiang)和(he)定(ding)位裝置。包括箱(xiang)(xiang)體(ti)，箱(xiang)(xiang)體(ti)內設(she)帶有軋(ya)(ya)件(jian)(jian)(jian)通(tong)道的(de)導(dao)(dao)板，箱(xiang)(xiang)體(ti)設(she)冷卻水口，導(dao)(dao)輥(gun)(gun)軸(zhou)設(she)油孔與油嘴連接，特點是箱(xiang)(xiang)體(ti)上至少(shao)設(she)置一對(dui)軸(zhou)線(xian)互相交叉的(de)導(dao)(dao)輥(gun)(gun)，三切(qie)分導(dao)(dao)衛(wei)價(jia)位，兩(liang)輥(gun)(gun)軸(zhou)線(xian)夾(jia)角為2α，兩(liang)只帶有弧面孔型(xing)的(de)導(dao)(dao)輥(gun)(gun)傾斜地伸入至軋(ya)(ya)件(jian)(jian)(jian)通(tong)道中(zhong)，構成近似橢圓(yuan)(yuan)孔型(xing)。當軋(ya)(ya)件(jian)(jian)(jian)穿過橢圓(yuan)(yuan)孔型(xing)時，導(dao)(dao)輥(gun)(gun)對(dui)軋(ya)(ya)件(jian)(jian)(jian)進(jin)行矯(jiao)直(zhi)、夾(jia)持和(he)扶正，使(shi)(shi)其長軸(zhou)以(yi)垂直(zhi)狀態(tai)順利進(jin)入圓(yuan)(yuan)孔型(xing)或方孔型(xing)。優點是，構思新(xin)穎，結構簡單(dan)、合理，使(shi)(shi)用(yong)時可以(yi)減(jian)(jian)少(shao)軋(ya)(ya)件(jian)(jian)(jian)扭曲(qu)和(he)歪斜，減(jian)(jian)少(shao)軋(ya)(ya)件(jian)(jian)(jian)對(dui)導(dao)(dao)輥(gun)(gun)、軸(zhou)承(cheng)的(de)沖(chong)擊，延長導(dao)(dao)衛(wei)使(shi)(shi)用(yong)壽命，減(jian)(jian)少(shao)導(dao)(dao)衛(wei)損(sun)耗和(he)更(geng)換頻次，減(jian)(jian)少(shao)堆(dui)鋼(gang)事(shi)故，有利于軋(ya)(ya)鋼(gang)生產，減(jian)(jian)少(shao)軋(ya)(ya)件(jian)(jian)(jian)刮(gua)傷和(he)軋(ya)(ya)輥(gun)(gun)錯(cuo)位，有利于提(ti)高產品(pin)正1品(pin)率。

導(dao)(dao)板(ban)用來引導(dao)(dao)軋(ya)件(jian)(jian)正(zheng)確進出(chu)(chu)孔型(xing)，使軋(ya)件(jian)(jian)在水平方向不致左右偏(pian)斜和歪扭。裝入口處(chu)的導(dao)(dao)板(ban)稱入口導(dao)(dao)板(ban)，裝在出(chu)(chu)口處(chu)的稱為出(chu)(chu)口導(dao)(dao)板(ban)。有時把導(dao)(dao)板(ban)裝在導(dao)(dao)板(ban)盒中。

衛板(ban)安裝在出口側(ce)用來防止發生纏輥事(shi)故。下(xia)衛板(ban)裝在導板(ban)橫梁上(shang)。上(shang)衛板(ban)固定較難，而且它(ta)不(bu)像(xiang)下(xia)衛板(ban)那樣工作可靠，其頂端可能(neng)因機架振動而離開軋輥，也可能(neng)因軋件(jian)撞(zhuang)在衛板(ban)尖上(shang)造(zao)成事(shi)故。在孔型設計時采用上(shang)壓，是避免這種麻煩(fan)的有效措施。

鋼板(ban)(ban)軋(ya)機(ji)不用導(dao)(dao)板(ban)(ban)，它(ta)的衛板(ban)(ban)又叫(jiao)護板(ban)(ban)。開坯(pi)軋(ya)機(ji)可(ke)采用整體(ti)鑄造的導(dao)(dao)板(ban)(ban)。型(xing)鋼軋(ya)機(ji)也可(ke)采用適于幾個孔型(xing)的整體(ti)導(dao)(dao)板(ban)(ban)。鋼管穿(chuan)孔機(ji)的導(dao)(dao)板(ban)(ban)上下(xia)布置，與軋(ya)輥一起構成孔型(xing)并(bing)參與變形(xing)。