【摘要】：磨削作為一種應(yīng)用廣泛的機(jī)械制造加工工藝,在現(xiàn)代機(jī)械制造行業(yè)中扮演著越來越重要的角色,業(yè)已成為最重要的精密及超精密加工方式之一,在新材料加工、軍工以及航空航天等領(lǐng)域的作用尤為突出。然而,傳統(tǒng)砂輪的磨料往往呈現(xiàn)一種無序的隨機(jī)排布狀態(tài),這使得真正參與材料去除的有效磨刃只占磨料總量的-小部分,大量冗余的磨料不但無法起到磨削作用,反而會(huì)造成砂輪表面容屑空間減小,磨屑無法及時(shí)排出,使砂輪堵塞,不利于磨削液的流動(dòng),最終導(dǎo)致磨削區(qū)的急劇溫升以及磨削燒傷,使磨削工件表面質(zhì)量和砂輪使用壽命的下降。因此,如何通過砂輪表面磨料進(jìn)行有序化排布,優(yōu)化砂輪容屑空間,使砂輪在磨削過程中參與材料去除的磨粒數(shù)顯著增多,最終提高砂輪的磨削性能,降低磨削溫度成為了磨削領(lǐng)域的研究重點(diǎn)。本文首先將有序化排布理論應(yīng)用到新型砂輪的設(shè)計(jì)制造中來,實(shí)現(xiàn)了砂輪表面磨料的有序化排布。并將有序化排布理論與磨削原理相結(jié)合,通過選用適當(dāng)?shù)臒嵩醇盁岱峙淠Ｐ偷仁侄谓⒘四チ嫌行蚧挪忌拜喚忂M(jìn)給磨削溫度場的數(shù)學(xué)模型。其次,本文通過仿真計(jì)算軟件MATLAB對磨料有序化排布砂輪緩進(jìn)給磨削溫度場模型進(jìn)行了仿真計(jì)算。對磨粒葉序排布、錯(cuò)位排布、矩陣排布以及無序排布砂輪緩進(jìn)給磨削表面溫度變化情況進(jìn)行了分析,對工件表面以下不同深度處的磨削溫度進(jìn)行了仿真研究,分析了磨削深度ap對緩進(jìn)給磨削溫度場的影響情況。結(jié)果表明:在相同條件下,磨料葉序排布砂輪緩進(jìn)給磨削溫度低于其余三種排布形式砂輪;隨著磨削深度的增大,緩進(jìn)給磨削表面最高溫度有降低的趨勢。最后,對磨料有序化排布砂輪磨削難加工材料溫度進(jìn)行了實(shí)驗(yàn)研究。通過對實(shí)驗(yàn)方案的總體設(shè)計(jì)以及測溫方式的選擇,測量了磨料有序化排布砂輪磨削工件表面最高溫度以及表面以下不同深度處的溫度,分析了砂輪的磨削性能。通過改變磨削參數(shù),研究了各個(gè)磨削參數(shù)對磨削溫度的影響情況。實(shí)驗(yàn)結(jié)果表明:通過砂輪磨料的有序化排布能顯著降低磨削溫度,提高磨削性能。
[Abstract]:Grinding, as a widely used machining technology, plays a more and more important role in the modern mechanical manufacturing industry. It has become one of the most important precision and ultra-precision machining methods, and has been used in the processing of new materials. The role of military industry and aerospace and other fields is particularly prominent. However, the abrasive of the traditional grinding wheel often presents a random arrangement state, which makes the effective grinding edge that really participate in the material removal accounts for only a small part of the total abrasive, and a large number of redundant abrasives can not play a role in grinding. On the contrary, it will reduce the space of the grinding wheel surface, and the debris will not be discharged in time, and the grinding wheel will be blocked, which will be unfavorable to the flow of grinding fluid, which will eventually lead to the sharp temperature rise in the grinding area and the grinding burn. The surface quality of grinding workpiece and the service life of grinding wheel are reduced. Therefore, how to arrange the grinding wheel surface abrasive in an orderly way, optimize the space of the grinding wheel, increase the number of abrasive particles that participate in the material removal in the grinding process, and finally improve the grinding performance of the grinding wheel. Reducing grinding temperature has become the focus of research in grinding field. In this paper, the ordered layout theory is first applied to the design and manufacture of the new grinding wheel, and the ordered arrangement of abrasive material on the surface of the grinding wheel is realized. By combining the theory of ordered distribution with the principle of grinding, the mathematical model of grinding temperature field of grinding wheel is established by selecting proper heat source and heat distribution model. Secondly, this paper simulates the temperature field model of the grinding wheel with slow feed through the simulation calculation software MATLAB. The temperature variation of grinding surface of abrasive blade sequence arrangement, dislocation arrangement, matrix arrangement and disordered arrangement grinding wheel is analyzed, and the grinding temperature at different depth below the surface of workpiece is studied by simulation. The influence of grinding depth ap on the temperature field of slow feed grinding is analyzed. The results show that, under the same conditions, the grinding temperature of the grinding wheel is lower than that of the other three kinds of grinding wheels, and the maximum temperature of the grinding surface decreases with the increase of grinding depth. Finally, the temperature of grinding refractory materials with ordered abrasive arrangement wheel is studied experimentally. Through the overall design of the experimental scheme and the selection of the temperature measurement method, the surface maximum temperature of the grinding workpiece and the temperature below the different depths of the grinding workpiece are measured, and the grinding performance of the grinding wheel is analyzed. The influence of grinding parameters on grinding temperature is studied by changing grinding parameters. The experimental results show that the grinding temperature can be significantly reduced and the grinding performance can be improved by the ordering arrangement of grinding wheel abrasive.
【學(xué)位授予單位】：沈陽理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TG580.6

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 陳超;龔艷麗;顏亮;鄧朝暉;伍俏平;;有序化砂輪的研究現(xiàn)狀及進(jìn)展[J];現(xiàn)代制造工程;2015年12期

2 彭昂;毛振東;;鈦合金的研究進(jìn)展與應(yīng)用現(xiàn)狀[J];船電技術(shù);2012年10期

3 趙恒華;宋濤;蔡光起;;磨削加工技術(shù)的發(fā)展趨勢[J];制造技術(shù)與機(jī)床;2012年01期

4 宋濤;趙恒華;;磨削加工技術(shù)的現(xiàn)狀[J];制造技術(shù)與機(jī)床;2011年11期

5 陳建毅;鄭祝堂;徐西鵬;;高速磨削難加工材料的研究進(jìn)展[J];工具技術(shù);2011年08期

6 章文姣;段隆臣;葉宏煜;楊凱華;;孕鑲金剛石鉆頭中有序排列參數(shù)的確定[J];金剛石與磨料磨具工程;2010年05期

7 鄧朝暉;萬林林;張榮輝;;難加工材料高效精密磨削技術(shù)研究進(jìn)展[J];中國機(jī)械工程;2008年24期

8 李曙生;徐九華;肖冰;嚴(yán)明華;傅玉燦;徐鴻鈞;;磨料有序排布釬焊金剛石砂輪磨削硬質(zhì)合金的性能研究(英文)[J];Transactions of Nanjing University of Aeronautics & Astronautics;2007年01期

9 徐慧蓉,徐海洋,郭力;高效深磨中溫度的理論分析[J];機(jī)床與液壓;2004年08期

10 劉維偉,張定華,史耀耀,任軍學(xué),汪文虎;航空發(fā)動(dòng)機(jī)薄壁葉片精密數(shù)控加工技術(shù)研究[J];機(jī)械科學(xué)與技術(shù);2004年03期

相關(guān)博士學(xué)位論文 前1條

1 赫青山;熱管砂輪高效磨削加工技術(shù)研究[D];南京航空航天大學(xué);2013年

相關(guān)碩士學(xué)位論文 前5條

1 錢源;高速磨削用單層釬焊立方氮化硼砂輪地貌建模與試驗(yàn)研究[D];南京航空航天大學(xué);2012年

2 蘇旭峰;高溫合金渦輪葉片緩進(jìn)磨削工藝研究[D];上海交通大學(xué);2009年

3 袁和平;磨料群可控排布技術(shù)及其砂輪的研制[D];大連理工大學(xué);2007年

4 同曉芳;磨削區(qū)溫度場有限元分析及仿真[D];武漢理工大學(xué);2007年

5 侯俠;磨料三維多層可控排布電鍍砂輪的若干研究[D];大連理工大學(xué);2006年

，

本文編號：2387923