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数控铣床铣削常用铣刀有哪些
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数控铣床铣削常用铣刀有哪些
日期: 2021-04-30 阅读: 8916 次

数控铣床铣削常用铣刀

(1)面铣刀

端铣所用(yong)刀(dao)(dao)具为(wei)面(mian)(mian)(mian)铣刀(dao)(dao),面(mian)(mian)(mian)铣刀(dao)(dao)可(ke)以是(shi)套式的(de),也可(ke)以是(shi)整体带柄(bing)式的(de)。面(mian)(mian)(mian)铣刀(dao)(dao)适用(yong)于(yu)加工(gong)平(ping)面(mian)(mian)(mian),尤其适合加工(gong)大(da)面(mian)(mian)(mian)积平(ping)面(mian)(mian)(mian)。面(mian)(mian)(mian)铣刀(dao)(dao)的(de)主切削(xue)刃分布在外圆(yuan)柱(zhu)面(mian)(mian)(mian)或外圆(yuan)锥(zhui)面(mian)(mian)(mian)上(shang),其端面(mian)(mian)(mian)上(shang)的(de)切削(xue)刃为(wei)副切削(xue)刃。

(2)三面刃铣(xian)刀。

三面刃(ren)铣刀的外圆周(zhou)和两(liang)边侧面都(dou)有切(qie)削刃(ren)。三面刃(ren)铣刀可以(yi)加工(gong)台肩面、沟槽(cao)等

(3)立铣刀

①通用(yong)立铣刀

从(cong)结(jie)构上分(fen)为整体结(jie)构立(li)铣(xian)刀和(he)(he)镶齿可转(zhuan)位立(li)铣(xian)刀,饟齿立(li)铣(xian)刀又分(fen)为方肩(jian)式和(he)(he)长刃(ren)式,长刃(ren)式也称(cheng)做(zuo)玉米立(li)铣(xian)刀。

②圆角(jiao)立铣刀

当立(li)铣刀(dao)(dao)端面刃边缘具有刀(dao)(dao)尖圆(yuan)(yuan)角(jiao)r时,称(cheng)为圆(yuan)(yuan)角(jiao)立(li)铣刀(dao)(dao)。立(li)铣刀(dao)(dao)的(de)刀(dao)(dao)尖圆(yuan)(yuan)角(jiao)半径提高(gao)了铣刀(dao)(dao)的(de)使用寿(shou)命,此类立(li)铣刀(dao)(dao)常用于加(jia)工槽或型腔的(de)过(guo)渡圆(yuan)(yuan)角(jiao)。

③球头立铣刀

显然,如果(guo)中(zhong)心切削圆角(jiao)(jiao)立铣刀(dao)(dao)的(de)圆角(jiao)(jiao)r,等(deng)于刀(dao)(dao)具(ju)(ju)半径,则(ze)刀(dao)(dao)具(ju)(ju)端(duan)面(mian)刃为(wei)球面(mian),此(ci)时(shi)称为(wei)球头铣刀(dao)(dao)。通常球头铣刀(dao)(dao)的(de)最小尺寸为(wei)$12R6mm,球头立铣刀(dao)(dao)由立铣刀(dao)(dao)发展(zhan)而成(cheng),可以沿(yan)刀(dao)(dao)具(ju)(ju)的(de)轴向(xiang)切入工(gong)件,以及沿(yan)刀(dao)(dao)具(ju)(ju)径向(xiang)切削,主(zhu)要(yao)用(yong)于加工(gong)三(san)维的(de)型腔或(huo)凸凹模成(cheng)形表面(mian),也可以用(yong)于孔口倒(dao)角(jiao)(jiao)和平面(mian)倒(dao)角(jiao)(jiao)。

④倒角铣刀

倒角铣刀用于工(gong)件边角处倒角。

(4)键槽铣刀

键(jian)槽铣(xian)刀(dao)(dao)即两(liang)齿中心(xin)切(qie)削立铣(xian)刀(dao)(dao)。圆(yuan)柱面上(shang)和端(duan)面上(shang)都有(you)切(qie)削刃,兼有(you)钻头和立铣(xian)刀(dao)(dao)的功能(neng)。端(duan)面刃延(yan)至(zhi)圆(yuan)中心(xin),使(shi)立铣(xian)刀(dao)(dao)可以(yi)沿其轴(zhou)向钻孔(kong),切(qie)出(chu)键(jian)槽深;又(you)可以(yi)像立铣(xian)刀(dao)(dao),用(yong)圆(yuan)柱面上(shang)刀(dao)(dao)刃铣(xian)削出(chu)键(jian)槽长度。铣(xian)削时,立铣(xian)刀(dao)(dao)先对工(gong)件钻孔(kong),然后(hou)沿工(gong)件轴(zhou)线(xian)铣(xian)出(chu)键(jian)槽全长。

(5)钻铣刀

钻(zuan)铣(xian)也称插(cha)铣(xian),钻(zuan)铣(xian)是高效率(lv)切除加(jia)工余(yu)量(liang)的加(jia)工方法,常(chang)用于(yu)粗加(jia)工。

(6)螺纹(wen)铣(xian)刀

螺纹铣刀用于铣削内、外蝶纹表(biao)面(mian)。

(7)鼓形(xing)铣(xian)刀

鼓(gu)形铣(xian)(xian)刀(dao)(dao)切削(xue)刃分布在半径为R的(de)(de)中凸的(de)(de)鼓(gu)形外廓(kuo)上(shang),其端面无(wu)切削(xue)刃。铣(xian)(xian)削(xue)时控制铣(xian)(xian)刀(dao)(dao)上(shang)下位置,从而改变刀(dao)(dao)刃的(de)(de)切削(xue)部位,可以在工(gong)(gong)件(jian)上(shang)加(jia)(jia)工(gong)(gong)出由(you)负(fu)到(dao)正的(de)(de)不同斜角表面,常用于(yu)数控铣(xian)(xian)床和加(jia)(jia)工(gong)(gong)中心加(jia)(jia)工(gong)(gong)立体曲面。R值(zhi)越(yue)小,鼓(gu)形铣(xian)(xian)刀(dao)(dao)所能(neng)加(jia)(jia)工(gong)(gong)的(de)(de)斜角范围(wei)越(yue)广,而加(jia)(jia)工(gong)(gong)后的(de)(de)表面粗糙度值(zhi)也越(yue)高(gao)。这种刀(dao)(dao)具的(de)(de)缺点是(shi):刃磨困难,切削(xue)条件(jian)差,而且不能(neng)加(jia)(jia)工(gong)(gong)有(you)底的(de)(de)轮廓(kuo)。

(8)成形铣刀

常见的几(ji)种(zhong)成形(xing)铣刀,成形(xing)铣刀一般为专用(yong)刀具(ju),即(ji)为某个工(gong)(gong)(gong)件(jian)或某项加工(gong)(gong)(gong)内容而专门制(zhi)造(刃磨)的。它适(shi)用(yong)于加工(gong)(gong)(gong)特定形(xing)状面和特形(xing)的孔、糟,常用(yong)于型模加工(gong)(gong)(gong)。


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