發(fā)布時(shí)間：2018-08-02 18:53

【摘要】：目的揭示微細(xì)銑削鋁合金6061過(guò)程中,銑削工藝參數(shù)(切削深度a_p、每齒進(jìn)給量f_z、切削速度v)、順逆銑方式、刀具磨損對(duì)毛刺大小及形態(tài)的影響規(guī)律,為控制鋁合金6061毛刺,提高表面質(zhì)量,優(yōu)化切削工藝提供參考。方法基于單因素試驗(yàn)方法,采用涂層硬質(zhì)合金微直徑銑刀,對(duì)鋁合金6061進(jìn)行了銑削加工試驗(yàn),分別對(duì)切削參數(shù)單因素試驗(yàn)的逆銑、順銑頂端毛刺大小數(shù)據(jù)以及刀具磨損、毛刺形態(tài)信息進(jìn)行采集和分析。結(jié)果直觀繪制了a_p、v、f_z對(duì)逆順銑兩側(cè)頂端毛刺大小的影響規(guī)律圖。單因素切削速度試驗(yàn)中,順銑側(cè)毛刺最大為323μm,逆銑側(cè)最大為268μm;單因素每齒進(jìn)給量試驗(yàn)中,順銑側(cè)毛刺最大為332μm,逆銑側(cè)最大為331μm;單因素切深試驗(yàn)中順銑側(cè)毛刺最大為314μm,逆銑側(cè)最大為264μm。結(jié)論逆銑比順銑的頂端毛刺小,隨切削深度增加,毛刺依次呈現(xiàn)長(zhǎng)條須狀、撕裂狀、波浪形鋸齒狀。刀具磨損是造成切削過(guò)程不穩(wěn)定的重要因素,同時(shí)也會(huì)造成毛刺形態(tài)和大小不穩(wěn)定。為盡量減少毛刺,應(yīng)采用鋒利刀具和逆銑方式,控制切削深度,選擇合適的切削速度和進(jìn)給量。
[Abstract]:Objective to reveal the effect of milling process parameters (cutting depth, feed rate per tooth, cutting speed, v), and tool wear) on the size and shape of aluminum alloy 6061, in order to control the size and shape of aluminum alloy 6061 burr. Improve surface quality and optimize cutting process to provide reference. Methods based on the single factor test method, the milling experiments of aluminum alloy 6061 were carried out by using the coated cemented carbide micro diameter milling cutter. The data of the back milling, the top burr size data and the tool wear of the single factor test of cutting parameters were carried out, respectively. The morphological information of burr was collected and analyzed. Results the effect of apical burr size on the tip burr size of apical burr in retrograde milling was drawn directly. In the single factor cutting speed test, the maximum of side burr is 323 渭 m, and the maximum of reverse milling side is 268 渭 m. The maximum of the side burr is 332 渭 m, the maximum of the reverse side is 331 渭 m, the maximum of the side burr is 314 渭 m and the maximum of the inverse side is 264 渭 m. Conclusion the back milling is smaller than the top burr of the down-milling. With the increase of cutting depth, the burr is in turn long stripe, tear and wavy sawtooth. Tool wear is an important factor in the instability of cutting process, and it can also cause instability of burr shape and size. In order to reduce burr, cutting depth should be controlled by means of sharp cutting tool and reverse milling, and suitable cutting speed and feed rate should be selected.
【作者單位】： 北京建筑大學(xué)機(jī)電與車輛工程學(xué)院;城市軌道交通車輛服役性能保障北京市重點(diǎn)實(shí)驗(yàn)室;北京市建筑安全監(jiān)測(cè)工程技術(shù)研究中心;
【基金】：北京市教育委員會(huì)科技計(jì)劃面上項(xiàng)目(KM201510016008) 北京市優(yōu)秀人才培養(yǎng)資助(2014000020124G056) 國(guó)家自然科學(xué)基金項(xiàng)目(51505006)~~
【分類號(hào)】：TG54

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