外文翻譯切削刀具(存儲(chǔ)版)
【正文】 Ferrous metals, on the other hand, are generally harder in position and tougher to cut. Cutting tool material is one of the biggest decisions you39。這表示孔徑必須為規(guī)定深度，不考慮鉆頭的斜角頭部。 如果孔的位置必須保持較小公差，應(yīng)首先使用中心鉆，然后使用麻花鉆光整孔。提示：在擴(kuò)孔時(shí)，孔的尺寸以及位置精度的最佳狀態(tài)是按照下列步驟操作：首先鉆孔，然后鏜孔，最后擴(kuò)孔。注：在使用銑床攻絲時(shí)必須特別小心。使用螺旋槽絲錐可將切屑帶出螺紋孔。端銑刀磨損時(shí)，少量偏移調(diào)節(jié)可確保每一個(gè)部件都有相同的尺寸。球銑刀球銑刀是一種圓角半徑正好等于刀具直徑一半的圓鼻端銑刀。這種刀具的直徑范圍很廣，能夠?qū)崿F(xiàn)更大深度的切削。如果更改上面的任一數(shù)值，計(jì)算器都會(huì)自動(dòng)更新切削所需功率。大部分上述刀具都可提供三種基本材料：高速鋼、整體硬質(zhì)合金以及硬質(zhì)合金嵌齒。提示：如果您正在使用高速鋼鉆頭，必須首先使用中心鉆。這些刀具材料都可提供各種不同的涂層以提高其性能。TiAlN涂層呈現(xiàn)灰色和黑色，主要用于加工硬質(zhì)合金。這表示端銑刀的槽數(shù)越多，切削中的剛性就越高。雙槽端銑刀的中心實(shí)心部分大約為端銑刀直徑的52％。其優(yōu)點(diǎn)在于切削速度和進(jìn)給速度更高(與TiN相比可提高40% 至60%)，金屬切除速度更快，而且具有極佳的耐磨性能。這會(huì)對(duì)外切削邊造成沖擊，并導(dǎo)致鉆頭碎裂。硬質(zhì)合金嵌齒刀具非常適合大批量生產(chǎn)場(chǎng)合，因?yàn)槊恳粋€(gè)嵌齒上都有多個(gè)切削邊。含鐵金屬通常較硬，難于切削。在銑削幫助頁面上，可求解三個(gè)方程：1. SFM = (刀具直徑[英寸]) * RPM * / 122. (切屑載荷[英寸]) = (進(jìn)給速度[英寸/分]) / RPM / 槽數(shù)3. (進(jìn)給速度[英寸/分]) = RPM / (螺距)在使用這三個(gè)方程時(shí)，您可輸入已知參數(shù)，控制設(shè)備將計(jì)算剩余的未知數(shù)。嵌齒端銑刀嵌齒端銑刀與標(biāo)準(zhǔn)端銑刀相同，但配有可更換的硬質(zhì)合金刀片。在加工硬質(zhì)材料時(shí)，標(biāo)準(zhǔn)端銑刀的尖角容易碎裂，而且磨損速度比圓鼻端銑刀更快。提示：在使用刀具補(bǔ)償功能（G41 以及 G42）編程，使用端銑刀切削輪廓或者型腔刀具軌跡時(shí)，在調(diào)節(jié)加工部位尺寸時(shí)非常靈活。切屑控制較為困難。盡管這種痕跡非常輕微，而且不會(huì)影響孔的尺寸，但某些客戶會(huì)因?yàn)榭椎耐庥^而拒絕接受。擴(kuò)孔鉆可使孔徑公差達(dá)到極小范圍，并可獲得極高的表面質(zhì)量。中心鉆中心鉆是一種小型鉆頭，配有引導(dǎo)點(diǎn)。盲孔是指沒有完全貫穿工件的孔。s diameter. TIP: Bull end mills are effective for producing a corner radius between a wall and a floor on a given part feature. They also add to the strength of an end mill. When machining hard, tough to cut materials, the sharp corners on a standard end mill tend to chip and wear faster than an end mill with a corner radius. The radius on a bull end mill provides a more gradual shearing entry in to the work piece. BALL END MILLA ball end mill is a bull end mill where the corner radius is exactly 1/2 the tool39。 A blind hole is not cut entirely through a workpiece. Quite often, an engineering blueprint will specify a drilled hole to be drilled to full diameter depth. This means that the hole diameter must be a specified depth without regard to the angled tip of the drill. When you measure your tool length offset, you are measuring the length of the drill and its tip. So how deep do you drill the hole so that the full diameter depth is correct? Well, you need to know how long the drill point is. TIP: The length of the drill point is determined by the tool point angle and the drill diameter. You can calculate the length of the drill point by multiplying the drill diameter by a constant。ll have to make when choosing a cutting tool. Most all of the cutters described above are available in three basic materials: highspeed steel, solid carbide, and carbide insert style. Almost all of the basic cutting tool materials can be used to cut almost all materials. It really boils down to performance. Highspeed steel cutting tools have very high toughness but lack wear resistance. Carbide, on the other hand, has a very high wear resistance but chips and breaks easily. Carbide will always be able to cut materials at higher speeds and feeds, but is more expensive. Carbide insert cutting tools are very useful in highproduction situations because the inserts are designed with multiple cutting edges on each insert. When they bee worn out, you index the inserts to the next cutting edge, and when all cutting edges are used, you only replace the inserts and not
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