【正文】 置形成圓弧，刀具會變得像磨削工具一樣把材料強行除掉，只能成為廢刀。”為了減少震動，在用小的切削力通過刀具的前傾面的去除適當(dāng)?shù)慕饘贂r，應(yīng)使?jié)B入到工件中的切削載荷連續(xù)而充足，如果鉆頭承受的切削載荷太輕，刀具前傾面的磨損速度就會加快，刀具變鈍，從而影響刀具的使用壽命。雖然相對較低，但伯頓的客戶也成功 的應(yīng)用過每分鐘5000轉(zhuǎn)的加工速度。伯頓還補充到，采用喙式進給并選擇高的主軸速度可以提高鉆頭的效率。所有的刀具都沒帶內(nèi)冷能力。伯頓說：“我們計劃這種涂層刀君會在六月到一年的時間內(nèi)上市”。因為小刀具涂層不能做的足夠薄，這樣涂層就會改變刀具的前角和后角，從而不利于加工。TiAIN具有很高的硬度,當(dāng)鉆削像不銹鋼這樣的難加工金屬材料時，帶有TiAIN涂層的刀具能有效的減少熱沖擊。如果產(chǎn)生很多泡沫，戴維斯說，“切屑就不會按著預(yù)定的方式排出。潤滑及冷卻為了更加有助于徘屑，戴維斯推薦在金屬加工中使用油基金屬切削液代替水基冷卻液，因為油具有較高的潤滑效果。每次喙式進給的深度最好為孔徑的30%50%。雖然沒加強調(diào)，但是加工細深孔時，喙式進給是一種很好的加工方式。例如，如果定心鉆的坡口角為120，內(nèi)冷卻鉆頭的坡口角為140，并且定心鉆的直徑小于內(nèi)冷卻鉆的直徑。當(dāng)選用定心鉆時，應(yīng)使選擇的定心鉆刀尖上的坡口角小于等于其后內(nèi)冷鉆的坡口角。為了防止這些冷卻液通口被雜物堵塞，戴維斯還推薦在鉆頭加上一5微米孔徑或更加精密的冷卻液濾清器。盡管有內(nèi)冷卻能力，但還是不夠的，冷卻液需要一定的流動速度從而能夠?qū)⑶行记宄隹淄?。另外，在加工小孔時采用的外冷卻液的冷卻方式產(chǎn)生的利要大于弊，當(dāng)鉆頭進入工件時，已經(jīng)流入孔的冷卻液產(chǎn)生的壓力有時會繳壞鉆頭，戴維斯說。也就是到35倍的直徑深度后切削液就會很難流入到刀尖。尤其是在加工深細孔時，有無冷卻液對加工的影響更大，因為深細孔加工的刀具比較脆弱，再加上刀具對切屑的二次切削和切屑的堆積會積累大量的熱，而熱量是碳化物刀具的主要“天敵”，它會加快刀具的失效速度。這篇文章主要介紹了內(nèi)冷卻鉆頭鉆孔、無冷卻鉆孔、插銑、電火花以及激光加工微孔的幾種方法。s lightrelated electricity requirements by as much as 70 percent.? Working with transportation carriers that use biodiesel fuel blends, because these can help reduce particulate matter emissions by as much as 80 percent.? Booking transits on slowersteaming vessels when a pany is shipping cargo internationally.* Working with carriers and thirdparty logistics providers that participate in the EPA，s SmartWay Transport Partnership(第二篇：外文翻譯微孔的加工方法正如宏觀加工一樣，在微觀加工中孔的加工也許也是最常用的加工之一。ity include: ? Changing aging lighting in warehouses to more current fluorescent lighting technologies。and type of energy 39。material handling equipment power ratings。 power grids produce lower carbon emissions than others)。t mean your retail pany can afford to pass the buck on the responsibility to “green” its warehousing, transportation and other logistics functionsSupply chain collaborationhas not caught on wdth many businesses , it is ripe wdth possible green advantages, because it can ultimately help hoth panies buHd more efficient transportation processes to reach their joint example, if Company A and Company B both have partially loaded trucks routinely traveling from Romeoville, I11., to stores in nearby Des Plaines or Woodstock, I11., it simply makes sense that they would wind up requiring substantially fewer overall transitsif they could share space on those loadsShould the prospect of collaboration still be a hit too “out there” for your corporate culture, you still may he able to achieve improved efticiencies if your organization currently has stores or divisions that are operating as separate shipping kind of structure suggests the presence of considerable redundancyas many do, especially during extremely hot or cold months, when driversare trying to stay fortableand the corresponding fuel constmiption and carbon a similar vein, if a pany39。第一篇：物流外文翻譯范文Greener Logistics are easy ways your retail pany can move products more efficiently and economically To many people, the terms“supply chain” and “carbon footprint” seem virtually all, the movement of raw materials and products makes significant transportation demands, and transportation39。s energy requirements often are more apparent