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1、數(shù)控車編程實(shí)例蘭州工業(yè)學(xué)院例在CK7815型數(shù)控車床上對(duì)圖(a)所示的零件進(jìn)行精加工，圖中?85mm不加工。要求編制精加工程序。(a)(b)?80?85?80?62?50M48X1.565602060603X?45R701X45155290?44.8?200T01T02T033515535355O350X2螺紋車刀外圓車刀切槽刀Z1X451．首先根據(jù)圖紙要求按先主后次的加工原則，確定工藝路線。(1)先從左至右切削外輪廓面。其路線為：倒角?切削螺紋的實(shí)際外圓?切削錐度部分?車削?62mm外圓?倒角?車?80mm外圓?切削圓弧部分?車削?80mm外圍。?80?85?80?62?50M48X1.56
2、5602060603X?45R701X45155290?44.8OX2Z1X45(3)車M48×1.5的螺紋。(2)切3mm×?45mm的槽。2．選擇刀具并繪制刀具布置圖根據(jù)加工要求需選用三把刀具，如圖所示。T01號(hào)外圓車刀，T02號(hào)切槽刀，T03號(hào)螺紋車刀。(a)(b)?80?85?80?62?50M48X1.565602060603X?45R701X45155290?44.8?200T01T02T033515535355O350X2螺紋車刀外圓車刀切槽刀Z1X453.編制的程序N0001G50X200.0Z350.0T01設(shè)定起刀點(diǎn)N0002S630M03主軸正轉(zhuǎn)，轉(zhuǎn)速630r/minN0
3、003G00X41.8Z292.0M08快進(jìn)至X=41.8mm，Z=292mm，開切削液(a)(b)?80?85?80?62?50M48X1.565602060603X?45R701X45155290?41.8?200T01T02T033515535355O350X2螺紋車刀外圓車刀切槽刀Z1X45由于加工螺紋后,工作會(huì)產(chǎn)生塑性變形,會(huì)使工件尺寸變大,普通M螺紋在配合中外螺紋的牙頂和內(nèi)螺紋的牙底間有一間的間隙,故加工前圓棒直徑是小于螺紋的理論的大徑,這個(gè)尺寸一般在0.1-0.2之間選擇.加工前圓棒的直徑d=48-0.2=47.8N0004G01X47.8Z289.0F0.15工進(jìn)至X=47.8
4、mm，Z=289mm，速度0.15mm/r（倒角）Z227.0Z向工進(jìn)至Z=227mm(精車?47.8mm螺紋外徑)X50.0X向工進(jìn)至X=50mm(退刀)(a)(b)?80?85?80?62?50M48X1.565602060603X?45R701X45155290?41.8?200T01T02T033515535355O350X2螺紋車刀外圓車刀切槽刀Z1X45X62.0W-60.0X向工進(jìn)至X=62mm(退刀)，-Z向工進(jìn)60mm(精車錐面)Z155.0Z向工進(jìn)至Z=155mm(精車?62mm外圓)X78.0X向工進(jìn)至X=78mm(退刀)(a)(b)?80?85?80?62?50M48X
5、1.565602060603X?45R701X45155290?41.8?200T01T02T033515535355O350X2螺紋車刀外圓車刀切槽刀Z1X45X80.0W-1.0X向工進(jìn)至X=80mm(退刀)，-Z向工進(jìn)1mm(倒角)（G01X78.0K-1.0）W-19.0-Z向工進(jìn)19mm(精車?80mm外圓)(a)(b)?80?85?80?62?50M48X1.565602060603X?45R701X45155290?41.8?200T01T02T033515535355O350X2螺紋車刀外圓車刀切槽刀Z1X45N0005G02W-60.0I63.25K-30.0順圓-Z向工進(jìn)6
6、0mm(精車圓弧)N0006G01Z65.0Z向工進(jìn)至Z=65mm(精車?80mm外圓)X90.0X向工進(jìn)至X=90mm(a)(b)?80?85?80?62?50M48X1.565602060603X?45R701X45155290?41.8?200T01T02T033515535355O350X2螺紋車刀外圓車刀切槽刀Z1X45N0007G00X200.0Z350.0T0100M09返回起刀點(diǎn)，取消刀具補(bǔ)償，同時(shí)關(guān)切削液N0008M06T0202換刀，并進(jìn)行刀具補(bǔ)償N0009S315M03主軸正轉(zhuǎn)，轉(zhuǎn)速315r/min(a)(b)?80?85?80?62?50M48X1.5656020606
7、03X?45R701X45155290?41.8?200T01T02T033515535355O350X2螺紋車刀外圓車刀切槽刀Z1X45N0010G00X51.0Z227.0M08快進(jìn)至X=51mm，Z=227mm，開切削液N0011G01X45.0F0.16X向工進(jìn)至X=45mm，速度0.16mm/r（車?45mm槽）N0012G04P1000.0暫停進(jìn)給1S(a)(b)?80?85?80?6
