E4809-770-103-A
E4809-770-103-A
E4809-770-103-A
———偏門的備品備件聯(lián)系我們——————
選擇刀具應(yīng)考慮數(shù)控車床的加工能力、工序內(nèi)容、工件材料等因素。數(shù)控車床所選擇的刀具，不僅要求具有高硬度、高耐磨性、足夠的強度和韌性、高耐熱性及良好的工藝性，而且要求尺寸穩(wěn)定、安裝調(diào)整方便。所以應(yīng)采用新型優(yōu)質(zhì)材料制造數(shù)控加工刀具，并優(yōu)化刀具參數(shù)，使刀具的尺寸與被加工工件的表面尺寸和形狀相適應(yīng)。那么，怎么選擇合適的切削刀具呢？
（1）選擇適當(dāng)?shù)牡毒?br />
在數(shù)控車床的切削加工中，金屬切削刀具的作用是極其重要的。制造刀具的材料必須具有較高的硬度、耐磨性和耐熱性，足夠的強度和韌性，良好的導(dǎo)熱性及工藝性，并具有良好的經(jīng)濟性。在選用刀具過程中，在滿足零件加工要求的前提下，盡量選擇直徑較大的刀具，它的強度及韌性較好；同一道工序中，選用的刀具數(shù)量盡量少，以減少換刀次數(shù)；盡可能選擇通用的標(biāo)準(zhǔn)刀具，不用或少用特殊的非標(biāo)準(zhǔn)刀具。
（2）合理確定對刀點
對刀點是在數(shù)控車床上加工零件時，刀具相對于工件運動的起點。又稱“程序起點"或“起到點"。對刀點的選擇必須遵守以下原則：便于用數(shù)字處理和簡化程序編制；在車床上找正容易，加工便于檢查；引起的加工誤差小。對刀點的位置可選在工件上，也可選在工件外面(如夾具或車床上)，
———冷門的備品備件聯(lián)系我們——————
———停產(chǎn)的備品備件聯(lián)系我們——————
福建光沃自動化設(shè)備有限公司
聯(lián)系人 ：歐工（銷售經(jīng)理）
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但必須與零件的定位基準(zhǔn)有一定的尺寸關(guān)系。對刀點應(yīng)盡量選在零件的設(shè)計基準(zhǔn)或工藝基準(zhǔn)上，如以孔定位的工件，可選孔的中心作為對刀點。刀具的位置則以此孔來找正，使“到位點"與“對刀點"重合。這樣，可以便可以更好地提高對刀的效率，保證加工質(zhì)量。
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