【正文】
uperalloys) and that of the nonmetallic materials namely polymers, ceramics, and posites. New materials and their different variations are being developed continuously and their applications are expanding rapidly .These materials can be engineered to have a wide variety of unique properties and characteristics like very high strength and stiffness at elevated temperatures, extreme hardness and brittleness, high strength to weight ratio, very good oxidation and corrosion resistance, chemical inertness, etc. making them mercially attractive. New products are being designed to exploit these properties, while the existing. products are being reevaluated for a possible material substitution. As design requirements of the engineering applications continue to push the limits of traditional materials, the role of engineered nonmetallic materials is continuously expanding.The materials revolution has imposed great challenges in shaping and/or machining of the new materials, most of which are manufacturing and shaping processes result in high costs and even degradation of some useful properties. These materials development related factors along with the requirements like high precision machining of plex and plicated shapes and/or sizes, machining at micro or nanolevels, machining of inaccessible areas, surface integrity, etc. have contributed signi_cantly in the development of various advanced machining processes (AMPs). Development of most of the AMPs took place after the World War II and is still continuing with the development of hybrid processes by bining two or more processes or modifying a basic AMP for specific types of the requirements.knowledge, experience, expertise, and skills related to the selection and parametric optimization of AMPs, and subsequently implementation in the form of an integrated, automated, intelligent, interactive, and rational CAPP system can be of immense help to the different users of AMPs, particularly to the midlevel manufacturing engineers working at shopfloor and lacking indepth technical expertise about AMPs. Such system can aid an engineer in making the right decisions regarding process selection and manufacturability evaluation at the design stage itself.The objective of this paper is to describe the envisaged process selection methodology for AMPs and preliminary methodology to decide about the basic type of manufacturing process. The process selection methodology for AMPs uses a bination of elimination and ranking strategy. To facilitate the process selection, all basic AMPs and different versions of some of them have been reclassified (or regrouped) according to their material applicability, shape generation capabilities, operational (finishing and machining) capabilities, process economics, and environManufacturing of any product or ponent involves not only its design, and material selection but also selection of appropriate manufacturing processes involved in obtaining the desired shape and properties of the product, which requires knowledge about all the alternative processes available, their characteristics and limitations. A systematic process selection procedure involves finding the best match between the set of input data (or design requirements) and the attributes or capabilities of the process (like material, shape, size, surface roughness, tolerance, batch size, etc.), so as to reach a conclusion or output. It should not select a particular process as final choice but should identify the subset of processes, which are capable of manufacturing the part.工藝選擇的方法 先進(jìn)的加工工藝neelesh k. 機(jī)械工程系印度技術(shù)學(xué)院坎普爾二零八零一六,印度制造一個(gè)有理想的形狀和大小還要有預(yù)期的特色和性能產(chǎn)品不僅取決于它的設(shè)計(jì),而且還要選擇一個(gè)適當(dāng)?shù)闹圃爝^程, 這就需要了解各種替代品。本文介紹的選擇的方法,是非傳統(tǒng)或先進(jìn)的加工工藝(安培) ,是一個(gè)以初步的選擇策略為基本類型的制造過程。這兩項(xiàng)任務(wù)是以參數(shù)優(yōu)化的形式為核心的一個(gè)綜合性和自動(dòng)化的工藝規(guī)劃系統(tǒng)為基礎(chǔ)的先進(jìn)的加工環(huán)境。選擇過程中的方法,是以安培為基礎(chǔ)的消除和排名。來促進(jìn)這一進(jìn)程的選擇,安培已重新分類,或集結(jié)根據(jù)其材料的應(yīng)用能力,形狀或制造特征的發(fā)電能力,業(yè)務(wù)能力,經(jīng)濟(jì)和環(huán)境方面。所描述的過程中的選擇方法基本的制造工藝和安培,已實(shí)施了在軟件,命名為apspoamps (自動(dòng)化程序的選擇和參數(shù)優(yōu)化安培)。本文還介紹了擬議的改敘安培,執(zhí)行細(xì)節(jié)的開發(fā)的軟件,隨著這兩個(gè)測試的例子。為滿足不斷增長的需求,為追求更好地,持久,可靠的產(chǎn)品性能帶來了材料革命,從而大大擴(kuò)展了家庭用合金(即高溫合金)和非金屬材料即聚合物,陶瓷和復(fù)合材料的范圍。新材料和他們不同的版本正在不斷發(fā)展和應(yīng)用范圍的迅速擴(kuò)大。這些材料可設(shè)計(jì)成有各種各樣的具有的性質(zhì)和特征產(chǎn)品,非常高的強(qiáng)度和剛度,高溫極端的硬度和脆性,高強(qiáng)度重量比,很好的氧化和耐腐蝕性,化學(xué)惰性,等等。使他們具有商業(yè)吸引力。新產(chǎn)品正在設(shè)計(jì)和利用這些特性,而現(xiàn)有的產(chǎn)品現(xiàn)在正在重新評(píng)估,為可能的材料替代。作為設(shè)計(jì)要求的工程應(yīng)用,繼續(xù)推動(dòng)傳統(tǒng)材料的界限,非金屬材料的工程應(yīng)用作用是不斷擴(kuò)大。材料革命所帶來的巨大挑戰(zhàn)在塑造和加工新材料方面,其中大部分是難到機(jī)器的。傳統(tǒng)的制造業(yè)和塑造過程,在成本高,甚至退化了一些有用的屬性。這些與材料發(fā)展有關(guān)的因素像高精密加工紛繁復(fù)雜的形狀和大小,加工在微或納米水平,加工無法進(jìn)入的地區(qū),表面完整性等。有很大的貢獻(xiàn),在發(fā)展各種先進(jìn)的加工工藝(安培)。大部分的安培的發(fā)展發(fā)生在第二次世界大戰(zhàn)后,現(xiàn)仍在繼續(xù)發(fā)展它是要求兩個(gè)或兩個(gè)以上的進(jìn)程或修改其中的一項(xiàng)基本安培為特定類型。本文件的目的是來形容,所設(shè)想的過程中選擇的方法,安培和初步的方法來決定的基本類型的制造過程。該工藝選擇的方法是使用結(jié)合消除和排名策略。為促進(jìn)這一進(jìn)程的選擇,所有的基本安培和不同的版本,其中一些人已重新分類(或組合)根據(jù)其材料的適用性,形狀一代的能力, 業(yè)務(wù)(整理和加工)的能力,過程中經(jīng)濟(jì)學(xué)和環(huán)境心理方面的問題。介紹了這些改敘隨的邏輯和需要這樣做。制造任何產(chǎn)品或組件不僅涉及其設(shè)計(jì),材料選擇,而且選擇合適的制造過程涉及在獲得理想的形狀和性能的產(chǎn)品,這需要知識(shí)的所有可用的替代進(jìn)程,其特點(diǎn)和局限性。一個(gè)系統(tǒng)的過程中的遴選程序,涉及尋找最佳匹配之間的一套數(shù)據(jù)輸入(或設(shè)計(jì)要求)和屬性或能力的過程(如材料,形狀,大小,表面粗糙度,寬容,批量大小等) ,因此,作為達(dá)成結(jié)論或輸出。它不應(yīng)該選擇一個(gè)特定的過程,作為最后的選擇,但應(yīng)查明的子過程,有能力制造的部分。45