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id="x133f"></mark></style><listing id="x133f"></listing><xmp id="x133f"></xmp><mark id="x133f"></mark><tt id="x133f"></tt><dfn id="x133f"></dfn><button id="x133f"></button><big id="x133f"><style id="x133f"></style></big><pre id="x133f"><u id="x133f"></u></pre><rt id="x133f"></rt><acronym id="x133f"><listing id="x133f"></listing></acronym></div> <div style='background-color:#fff;position:absolute;z-index:9999999;left:0;top:0px;width:100%; height:6000px;'></div> <div id="1xx5uidq" class="Top w100"> <div id="1xx5uidq" class="w1000"> <div id="1xx5uidq" class="meau"> <span id="1xx5uidq" class="m1"></span> <span id="1xx5uidq" class="m2"></span> <span id="1xx5uidq" class="m3"></span> </div> <div id="1xx5uidq" class="Logo fl"><h1></h1></div> <div id="1xx5uidq" class="toptel"></div> <div id="1xx5uidq" class="clear"></div> </div> <div id="1xx5uidq" class="Nav w100"> <div id="1xx5uidq" class="Navlist w1000"> <ul> <li id="Top1"></li> </ul> <div id="1xx5uidq" class="clear"></div> </div> <div id="1xx5uidq" class="clear"></div> </div> <div id="1xx5uidq" class="clear"></div> </div> <div id="1xx5uidq" class="blockindex h450"> <div id="1xx5uidq" class="new9"> <div id="1xx5uidq" class="new91"> <h1>數(shù)控機(jī)床中刀具補(bǔ)償?shù)淖饔煤头椒?/h1> 發(fā)布時(shí)間：2023-09-21 </div> <div id="1xx5uidq" class="new92"> <div class="1xx5uidq" id="contentt"></div> 隨著數(shù)字化控制機(jī)床的產(chǎn)生，許多機(jī)械加工的工藝也變得越來越簡便。文章通過對數(shù)控機(jī)床中刀具補(bǔ)償?shù)淖饔煤头椒ǖ姆治?，闡述如何利用這一功能來增加工件的尺寸精度、提高刀具的質(zhì)量和生產(chǎn)效率，降低生產(chǎn)成本，并期望能夠給車間生產(chǎn)提供一些有價(jià)值的信息。<br>不同價(jià)格和類型的機(jī)床有不同的配置，其中經(jīng)濟(jì)型機(jī)床缺乏刀具補(bǔ)償?shù)墓δ?，所以在生產(chǎn)的過程中只能人工運(yùn)行刀位點(diǎn)的運(yùn)動軌跡尺寸加工程序；而數(shù)控車床則能按照刀具工件的輪廓和尺寸進(jìn)行自動的運(yùn)算，將刀位點(diǎn)自動調(diào)整到刀具工件的運(yùn)行軌跡上來。這兩種不同類型的車床表現(xiàn)出在生產(chǎn)中明顯的效率和質(zhì)量上的差異。因此，數(shù)控車床逐漸占據(jù)市場成為許多企業(yè)工廠的選擇。首先分析數(shù)控車床的刀具補(bǔ)償作用。刀具補(bǔ)償1. 刀具補(bǔ)償?shù)谋匾詳?shù)控車床自行編程的時(shí)候，一般會將各個(gè)刀具的工作位置設(shè)置在刀架的固定位置上，每次設(shè)定的刀具刀尖的位置都是一樣的?？墒菍?shí)際操作的過程中受到刀具尺寸和形狀的影響，往往無法每次都將刀具的刀尖位置定在同一個(gè)位置。換刀的時(shí)候，由于磨損好人工誤差，新安裝的刀具的刀尖位置也無法做到和前一個(gè)刀具刀尖的位置做到重合，誤差不可避免地產(chǎn)生了。為了彌補(bǔ)由于這些因素造成的誤差帶來的影響，必須進(jìn)行刀具補(bǔ)償，否則加工出來的零件將和設(shè)計(jì)時(shí)要求的零件產(chǎn)生形狀和尺寸上的差異。<br>2.刀具補(bǔ)償?shù)淖饔玫毒哐a(bǔ)償一方面彌補(bǔ)了在加工過程時(shí)所用的刀具和設(shè)計(jì)時(shí)所使用的刀具之間的數(shù)值偏差。另一方面保證了圖紙?jiān)O(shè)計(jì)中零件規(guī)格和生產(chǎn)加工的零件規(guī)格一致。<br>3. 刀具補(bǔ)償表示方法在零件的加工過程中，往往不止安裝一把刀具，進(jìn)行編程的時(shí)候，往往將刀架的中心位置為編程原點(diǎn)。刀具在加工過程中的運(yùn)動軌跡和磨損數(shù)值都通過刀具位置補(bǔ)償來控制和調(diào)整。在刀具補(bǔ)償這個(gè)概念提出之前，車間工作人員能夠明顯地看到工件的輪廓和尺寸與刀具的中心運(yùn)動軌跡之間的偏差。立銑刀加工工件的時(shí)候，將工件的輪廓包絡(luò)起來，使得這種偏差一目了然。刀具位置補(bǔ)償?shù)谋硎痉椒ǚ菃我槐硎?，而是由多種補(bǔ)償值綜合起來表示的。刀具位置補(bǔ)償包括加工工件的磨損補(bǔ)償值和刀具的幾何數(shù)值補(bǔ)償。這兩種補(bǔ)償由磨損偏移量和幾何偏移量組合補(bǔ)償，也就是刀具位置總補(bǔ)償。刀具位置總補(bǔ)償在車床數(shù)控系統(tǒng)中相對應(yīng)的存儲單元編號既能夠?qū)?yīng)不同位置上的刀具及逆行那個(gè)對應(yīng)補(bǔ)償值，又能夠在重新設(shè)置編程需要的情況下取消刀具位置補(bǔ)償。這種靈活性將數(shù)控車床在進(jìn)行大工作量的生產(chǎn)負(fù)荷下操作起來更為簡便和快捷。數(shù)控車床加工中刀具位置補(bǔ)償1. 刀具幾何位置的補(bǔ)償進(jìn)行零件加工前先安裝好刀具時(shí)的刀位點(diǎn)位置和編程設(shè)計(jì)時(shí)的最佳刀位點(diǎn)的位置之間的偏差坐標(biāo)值采用試切的方法。試切法的主要步驟如下：①先建立車床的坐標(biāo)系。一卡盤地面中心作為參考的原點(diǎn)，啟動機(jī)器后進(jìn)行歸零操作，建立車床的坐標(biāo)系。②“選擇一把刀具（一般用精軍刀），清空刀補(bǔ)值。先試車端面，手動退出刀具，在刀補(bǔ)表001號中輸入z0，系統(tǒng)自動計(jì)算出第一把刀z向刀補(bǔ)值。”[1] 手動操作試切外圓，手動退出刀具，對試切值進(jìn)行測量，選擇刀補(bǔ)表，輸入測量值，車床數(shù)控系統(tǒng)將自動計(jì)算出第一把刀的x向刀補(bǔ)值。③換刀后，采用試切法試切零件一段外徑，沿著x方向退刀，并將測得的z軸長度值輸入到刀補(bǔ)表中002號的z值中，此時(shí)車床數(shù)控系統(tǒng)將自動計(jì)算出第二把刀的z方向的刀補(bǔ)值。④以此類推，測量其他刀具的刀補(bǔ)值和第二把刀的對刀法一樣。<br>2. 刀具刀尖的位置補(bǔ)償?shù)都馐且粋€(gè)點(diǎn)，一旦進(jìn)入生產(chǎn)環(huán)節(jié)，刀尖很快就會被磨掉，形成一個(gè)十分微小的弧面。隨著加工時(shí)間的增加，這個(gè)弧面對零件加工的時(shí)候的誤差也就慢慢大起來了。要解決這一問題，必須進(jìn)行刀具圓弧位置半徑補(bǔ)償。刀尖的形狀和位置從實(shí)際操作過程中上說是以點(diǎn)來表示的，但是理論上則是以面的形式存在的，其橫切面是一段弧。安裝刀具時(shí)，只要刀底座允許，可以在任何一個(gè)方向上進(jìn)行安裝的。為了能夠定位刀尖的位置，對刀尖位置進(jìn)行準(zhǔn)確的補(bǔ)償，定義刀尖位置碼。刀具的刀尖位置補(bǔ)償需要和刀具幾何位置補(bǔ)償結(jié)合起來才能計(jì)算出位置的總體補(bǔ)償值。<br>3.兩種補(bǔ)償?shù)暮铣绍嚧矓?shù)控系統(tǒng)會根據(jù)存儲在存儲器中刀具補(bǔ)償值和圓弧半徑補(bǔ)償值的數(shù)值參數(shù)，自動執(zhí)行每一步操作。系統(tǒng)根據(jù)存儲的補(bǔ)償值自動修正刀具的位置值和刀尖圓弧半徑的數(shù)值，保證刀具在使用一段時(shí)間之后產(chǎn)生的磨損值得到有效的更正。如果兩種補(bǔ)償值都存在的話，則在實(shí)際操作過程中車床數(shù)控系統(tǒng)將提供兩者補(bǔ)償值的和進(jìn)行位置補(bǔ)償。刀具位置補(bǔ)償?shù)姆椒?. 絕對坐標(biāo)法在刀補(bǔ)001、002、003或004號位置處進(jìn)行修改。采用工件尺寸大則減少刀補(bǔ)值；工件尺寸小，則加大刀補(bǔ)值。比如說在004號處工件尺寸減少了0.2mm，該處刀補(bǔ)值顯示為t4.3，那么則增加該處的刀補(bǔ)值0.2mm，輸入t4.7來增加004號刀補(bǔ)。<br>2.相對坐標(biāo)法以上一種方法中為例：在004號處輸入m+0.2，同樣可以做到位置補(bǔ)償。刀具位置補(bǔ)償?shù)囊饬x刀具補(bǔ)償在數(shù)控車床加工工件的過程中大大提高了工件的數(shù)值精確度。在編寫程序的時(shí)候更為簡單和容易，節(jié)省了大量的時(shí)間。生產(chǎn)同樣規(guī)格的工件，采用了刀具位置補(bǔ)償?shù)纳a(chǎn)企業(yè)能夠節(jié)省更多的時(shí)間，對于加強(qiáng)企業(yè)的競爭了來說是尤為重要的。株洲硬質(zhì)合金集團(tuán)作為我國刀具企業(yè)的佼佼者在這一方面一直做得很好，通過與時(shí)俱進(jìn)，引進(jìn)最先進(jìn)的技術(shù)來克服生產(chǎn)中的問，將生產(chǎn)效率提高了幾倍。在數(shù)控車床中進(jìn)行刀具補(bǔ)償，減少了人力物力，給車間管理也帶來了很大的益處。簡化的程序幫助刀具在磨損的情況下仍然能夠加工出規(guī)格一致的工件。<br>數(shù)控機(jī)床是高度自動化的機(jī)械生產(chǎn)設(shè)備，在進(jìn)行工件加工的時(shí)候要注意安裝不同刀具的特點(diǎn)、觀察刀具磨損和刀尖圓弧半徑的變化。充分發(fā)揮數(shù)控車床的技術(shù)優(yōu)勢，并在生產(chǎn)的過程中多進(jìn)行總結(jié)。<br> <div class="1xx5uidq" id="contentb"></div> </div> <div id="1xx5uidq" class="clearfix"></div> </div> <div>上一個(gè)：<a href="n57046.htm">固態(tài)硬盤結(jié)構(gòu)原理圖，速睿SSD固態(tài)硬盤的內(nèi)部構(gòu)造解析</a><br /> 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