本文選題：多自由度切削加工 + 銑-銑復(fù)合加工方法�。� 參考：《北京理工大學(xué)》2015年博士論文

【摘要】：難加工材料得到了越來越廣泛的應(yīng)用,這些材料所具有良好的性能特征使其能很好地滿足使用要求。通過新的高效切削方法和對應(yīng)的新刀具結(jié)構(gòu)來降低難加工材料切削加工過程的切削力、提高刀具壽命、提高加工效率是切削加工領(lǐng)域的一個(gè)研究的課題。本文針對難加工材料高效切削新方法及刀具結(jié)構(gòu)進(jìn)行了研究,主要包括以下幾個(gè)方面:1、基于復(fù)合加工的思想、磨損均化的思想、有序多刃加工的思想和多自由度切削加工方法概念,提出了一種全新的加工方法銑-銑復(fù)合加工方法。銑-銑復(fù)合加工方法綜合了端面銑刀和螺旋刃立銑刀的優(yōu)點(diǎn),利用端面銑刀和螺旋刃立銑刀合成運(yùn)動(dòng)來完成表面加工。對銑-銑復(fù)合加工方法的原理進(jìn)行了分析,并對其進(jìn)行了分類。根據(jù)銑-銑復(fù)合加工方法具有的組合優(yōu)勢,提出了順逆混合銑-銑復(fù)合加工方法的概念。2、通過理論和實(shí)驗(yàn)的方法得出了銑-銑復(fù)合加工方法的優(yōu)勢:銑-銑復(fù)合加工方法的切削力較傳統(tǒng)的端面銑削切削力小;銑-銑復(fù)合加工方法成功的解決了斷屑問題。銑-銑復(fù)合加工方法的實(shí)際切削速度是立銑刀的速度與刀盤的速度的合成,因此當(dāng)立銑刀的速度取一較大值時(shí),刀盤的速度取一較小值就能實(shí)現(xiàn)高速切削;銑-銑復(fù)合加工方法提高了整個(gè)刀具的壽命;銑-銑復(fù)合加工方法具有高的效率和高的材料的去除率;銑-銑復(fù)合加工方法既可以發(fā)揮端面銑刀的直徑較大、一次銑削平面的面積較大的優(yōu)勢也可以發(fā)揮螺旋刃立銑刀切削輕快、平穩(wěn)、效率高等優(yōu)點(diǎn),同時(shí)端面銑刀、螺旋刃立銑刀的好的優(yōu)秀的成果也可直接應(yīng)用于銑-銑復(fù)合加工方法中;另一方面銑-銑復(fù)合加工方法也有自身的特色,如順逆混合銑-銑復(fù)合加工方法可抵消部分切削力。3、通過理論和實(shí)驗(yàn)的方法得出了在銑-銑復(fù)合加工方法中,隨切削速率比的增大銑削力減小。隨著切削速率比的增大切屑對應(yīng)部分的厚度將不斷的減小以及相應(yīng)的等效厚度也將不斷的減小。隨著銑-銑切削速率比的增加表面粗糙度減小表面形貌越來越好。從理論和實(shí)踐的角度深層次地分析研究了多自由度切削加工方法中重要參數(shù)“切削速率比”。4、根據(jù)銑-銑復(fù)合加工方法的原理和切削機(jī)理,提出了銑-銑復(fù)合加工方法的多種硬件實(shí)現(xiàn)形式,從結(jié)構(gòu)上進(jìn)行了創(chuàng)新。包括提出了銑-銑復(fù)合加工方法基于機(jī)電一體化思想的硬件實(shí)現(xiàn)形式、采用周轉(zhuǎn)輪系的硬件實(shí)現(xiàn)形式。設(shè)計(jì)了行星銑刀、機(jī)電式銑-銑動(dòng)力頭和機(jī)械式銑-銑動(dòng)力頭。根據(jù)銑-銑復(fù)合加工方法自身的特點(diǎn),設(shè)計(jì)了非線性螺旋刃圓柱立銑刀。5、采用與銑-銑復(fù)合加工方法相同的思路對多自由度銑削加工方法的另一種實(shí)現(xiàn)形式驅(qū)動(dòng)式滾切銑削進(jìn)行了歸納分析,包括“切削速率比”與表面形貌、刀具后刀面磨損速率、切削力大小之間的關(guān)系以及硬件實(shí)現(xiàn)等。
[Abstract]:Difficult to machining materials has been more and more widely used, these materials have good performance characteristics so that it can well meet the requirements. To reduce the cutting force of hard machining material cutting process, cutting tool structure by the new method and the corresponding new and improved tool life, improve processing efficiency is a study of machining field. This paper studies the new method of difficult machining materials with high efficiency and cutting tool structure was carried out, mainly including the following aspects: 1, based on the idea of composite processing, wear homogenization theory, ordered multi edge processing ideas and multi degree of freedom cutting method concept, put forward a kind of processing new method of milling and milling machining method. Milling milling method combines the advantages of face milling and helical blade milling cutter, cutter movement to end the use of synthetic helical end milling cutter and Surface processing. The principle of milling milling machining methods are analyzed, and its classification. According to the combination of advantages of milling milling method, along the concept of.2 inverse hybrid milling milling machining method is put forward, through theoretical and experimental methods of milling and milling machining methods: the advantages of end milling cutting force milling milling method compared with the traditional small milling; milling compound machining method successfully solve the problem of chip breaking. The actual cutting speed milling milling machining method is the synthesis of speed cutter and cutter speed, so when the cutter speed take a large value, the cutter speed from a smaller value can realize high speed cutting; milling milling method increase the tool life; the removal rate of milling and milling machining method with high efficiency and high material; milling milling composite additive Construction method can not only play the larger diameter end cutter, a milling plane area can also play a greater advantage of spiral blade milling cutter cutting light, stable, high efficiency, and face milling, spiral blade milling cutter the good results can be directly applied to the milling milling machining method in the other; on the one hand milling milling machining method has its own characteristics, such as inverse mixed milling milling method of cutting force can be offset in part.3, through theoretical and experimental methods obtained in the milling milling machining method, cutting speed with the increase of the ratio of milling force decreases with cutting speed than the equivalent thickness. The increase of chip corresponding thickness will decrease continuously and will decrease continuously. With the milling milling rate than the increase of surface roughness decreases the surface morphology better. From theoretical and practical angle Deep research on multi degree of freedom cutting method in the important parameters of "cutting rate than".4, according to the principle and mechanism of cutting milling milling method, put forward various forms of hardware milling milling method, and made innovation. The structure comprises a proposed milling milling composite processing method realization principle of electromechanical integration based on hardware realization by hardware. The design of epicyclic gear planetary milling cutter, electromechanical milling power head and mechanical milling milling power head. According to the milling milling machining method of its own characteristics, design a nonlinear helical milling cutter.5, using the same with the milling milling machining method of multi DOF milling method is another form of driving type hobbing are summarized and analyzed, including the cutting speed ratio and surface morphology, tool flank The relationship between the wear rate, the cutting force and the size of the cutting force, and the realization of the hardware.

【學(xué)位授予單位】：北京理工大學(xué)
【學(xué)位級別】：博士
【學(xué)位授予年份】：2015
【分類號】：TG71;TG506.1

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