數(shù)控機(jī)床原點(diǎn)及參考點(diǎn)設(shè)置及實(shí)例

1、數(shù)控機(jī)床原點(diǎn)及參考點(diǎn)設(shè)置及實(shí)例1、機(jī)床原點(diǎn)的設(shè)置機(jī)床原點(diǎn)是指在機(jī)床上設(shè)置的一個固定點(diǎn)，即機(jī)床坐標(biāo)系的原點(diǎn)。它在機(jī)床裝配、調(diào)試 時就已確定下來，是數(shù)控機(jī)床進(jìn)行加工運(yùn)動的基準(zhǔn)參考點(diǎn)。（1 ）數(shù)控車床的原點(diǎn)在數(shù)控車床上，機(jī)床原點(diǎn)一般取在卡盤端面與主軸中心線的交點(diǎn)處，見圖1.9。同時，通過設(shè)置參數(shù)的方法，也可將機(jī)床原點(diǎn)設(shè)定在X、Z坐標(biāo)的正方向極限位置上。數(shù)禹 shukongwj 1.10。圖1.9車床的機(jī)床原點(diǎn)圖1.10銃床的機(jī)床原點(diǎn)（2 ）數(shù)控銃床的原點(diǎn)在數(shù)控銃床上，機(jī)床原點(diǎn)一般取在X、Y、Z坐標(biāo)的正方向極限位置上，見圖2、機(jī)床參考點(diǎn)機(jī)床參考點(diǎn)是用于對機(jī)床運(yùn)動進(jìn)行檢測和控制的固定位置點(diǎn)。4機(jī)琢理點(diǎn)r

2、-rZpY 900澤控 om圖1.11數(shù)控車床的參考點(diǎn)機(jī)床參考點(diǎn)的位置是由機(jī)床制造廠家在每個進(jìn)給軸上用限位開關(guān)精確調(diào)整好的，坐標(biāo)值 已輸入數(shù)控系統(tǒng)中。因此參考點(diǎn)對機(jī)床原點(diǎn)的坐標(biāo)是一個已知數(shù)。通常在數(shù)控銃床上機(jī)床原點(diǎn)和機(jī)床參考點(diǎn)是重合的；而在數(shù)控車床上機(jī)床參考點(diǎn)是離機(jī) 床原點(diǎn)最遠(yuǎn)的極限點(diǎn)。圖1.11所示為數(shù)控車床的參考點(diǎn)與機(jī)床原點(diǎn)。數(shù)控機(jī)床開機(jī)時，必須先確定機(jī)床原點(diǎn)，而確定機(jī)床原點(diǎn)的運(yùn)動就是刀架返回參考點(diǎn)的 操作，這樣通過確認(rèn)參考點(diǎn)，就確定了機(jī)床原點(diǎn)。只有機(jī)床參考點(diǎn)被確認(rèn)后，刀具（或工作 臺）移動才有基準(zhǔn)。When you are old and grey and full of sleep,A

3、nd no ddi ng by the fire, take down this book,And slowly read, and dream of the soft lookYour eyes had once, and of their shadows deep;How many loved your mome nts of glad grace,And loved your beauty with love false or true,But one man loved the pilgrim soul in you,And loved the sorrows of your cha

4、nging face;And bending dow n beside the glow ing bars,Murmur, a little sadly, how love fledAnd paced upon the mountains overheadAnd hid his face amid a crowd of stars.The furthest dista nee in the worldIs not betwee n life and deathBut whe n I sta nd in front of youYet you don't know thatI love

5、you.The furthest dista nee in the worldIs not whe n I sta nd in front of youYet you can't see my loveBut whe n un doubtedly knowing the love from bothYet cannot be together.The furthest dista nee in the worldIs not being apart while being in loveBut whe n I pla inly cannot resist the year ningYet prete nding you have n ever bee n in my heart.The furthest dista nee in the worldIs not struggli ng aga inst the tidesBut using