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您的當前位置: 網站首頁 > 企業新聞 » 威鍛液壓講解軸頸零件加工孔的軸心線歪斜和彎斷鉆頭

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威鍛液壓講解軸頸零件加工孔的軸心線歪斜和彎斷鉆頭

單臂液壓機軸的內孔長度與直徑之比L/D很大。軸頸零件的03內孔,長34毫米,L/D達11屬于深孔。單臂液壓機深孔鉆削的主要困難有:切屑排不出來,卡在鉆頭的螺旋槽內,擦傷已加工表面,單臂液壓機增加鉆頭的扭轉阻力,使鉆頭有扭斷的危險。單臂液壓機鉆頭工L/D大,剛度差,在軸向切削力的作用下,發生彎曲,致使單臂液壓機加工孔的軸心線歪斜和彎斷鉆頭,以及由于單臂液壓機孔深度大和切屑的堵塞冷卻潤滑液難以進入切削區,鉆頭切削部分沮度升高被退火失去切削能力等。


    單臂液壓機深孔加工的這些困難,反映在加工單臂液壓機小直徑深孔和大直徑深孔的影響程度又有不同。單臂液壓機加工小直徑深孔時,由于小直徑臥式液壓機麻花鉆的排屑槽淺,單臂液壓機排屑槽的螺旋角小以及鉆頭剛度差等原因,使加工孔的表面粗糙度增大、軸心線m斜和容易扭斷鉆頭。改進辦法有:
    采用單臂液壓機工件旋轉鉆頭軸向進給的切削方式:普通單臂液壓機鉆孔加工孔的軸心線直度受鉆頭的剛度和鉆頭上沿已加工表面滑行的棱帶運動方向等因素的影響。在單臂液壓機鉆孔開始時,單臂液壓機鉆頭是橫刃切削,軸向切削力大,小鉆頭的杭彎剛度小,或者單臂液壓機工件表面不平等偶然因素,將使單臂液壓機鉆頭在開始切入金屬的瞬間。文本來源機床專業資料網,由山東威鍛機械設備有限公司 單臂液壓機http://www.62888pk.com 分部整理首發

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