【摘要】：隨著航空、航天、汽車制造、石油開采等領(lǐng)域的的迅速發(fā)展,對深孔件的需求量越來越多,而且對工件內(nèi)孔的質(zhì)量要求也越來越高,因此,高效的深孔刮滾加工工藝也備受關(guān)注。深孔刮滾切削是一種高效的深孔精加工工藝,采用深孔刮滾復(fù)合刀具對內(nèi)孔進(jìn)行一次加工成型,將以前的粗鏜、半精鏜、精鏜、滾壓等工序進(jìn)行簡化,大大節(jié)省了加工時(shí)間,提高了生產(chǎn)效率。例如油缸內(nèi)孔精加工,在采用刮滾切削時(shí)與傳統(tǒng)的珩磨機(jī)相比,不但相噪音低,并可大大節(jié)省勞動力成本,且加工精度高,加工后表面粗糙度可達(dá)到Ra0.05-0.4?m,表面硬度可提高一倍,增加油缸的使用壽命。這篇文章分主要對刮滾刀具的刮削和滾壓兩部分進(jìn)行了分析。(1)通過ABAQUS有限元分析軟件模擬二維切削過程,分析了切削機(jī)理及特點(diǎn),并對各項(xiàng)參數(shù)做了分析。(2)得到四種不同刀具角度條件下切削殘留面積的最大高度,并對粗糙峰某一界面在滾壓中的塑性流動規(guī)律采用滑移線場法進(jìn)行了研究,得到了理論最佳的表面光整效果,并得到了滾壓表面光整效果與滾壓力的關(guān)系公式。(3)通過ABAQUS軟件,對滾壓的各項(xiàng)參數(shù)進(jìn)行了有限元模擬,得到了各項(xiàng)參數(shù)對滾壓效果的影響。(4)最后對刮滾切削刀具提出了設(shè)計(jì)和優(yōu)化的方法。并通過計(jì)算公式對滾柱的數(shù)量和尺寸的確定、對滾壓前刮削刀具及滾壓頭的尺寸提供了設(shè)計(jì)依據(jù)。
[Abstract]:With the rapid development of aviation, spaceflight, automobile manufacturing, oil exploitation and other fields, the demand for deep-hole parts is increasing, and the quality requirements for inner holes of workpieces are also getting higher and higher. The high efficiency deep hole scrape rolling processing technology has also been paid close attention to. Deep hole scraping and rolling cutting is an efficient deep hole finishing process. The deep hole scraping and rolling composite tool is used to process the inner hole once, simplifying the previous rough boring, semi-fine boring, rolling and other processes, thus greatly saving the processing time. Improved production efficiency. For example, when scrape and roll cutting is used, compared with the traditional honing machine, it can not only reduce the phase noise, but also save the labor cost greatly, and the machining precision is high, and the surface roughness can reach Ra0.05-0.4?m, after machining. The surface hardness can be doubled and the service life of the cylinder will be increased. This paper is divided into two parts: scraping and rolling. (1) the two-dimensional cutting process is simulated by ABAQUS finite element analysis software, and the cutting mechanism and characteristics are analyzed. The parameters are analyzed. (2) the maximum height of the residual cutting area is obtained under the conditions of four different tool angles, and the plastic flow law of a certain interface of rough peak in rolling is studied by using slip line field method. The best theoretical surface finishing effect is obtained, and the formula of the relation between rolling surface finishing effect and rolling pressure is obtained. (3) the parameters of rolling are simulated by finite element method (FEM) through ABAQUS software. The influence of various parameters on rolling effect is obtained. (4) at last, the design and optimization method of scraping cutting tool is put forward. The calculation formula is used to determine the number and size of the roller, and the design basis is provided for the size of the scraping tool and the roller head before rolling.
【學(xué)位授予單位】：中北大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TG713

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