本文選題：電火花線(xiàn)切割 + 直紋曲面　； 參考：《燕山大學(xué)》2015年碩士論文

【摘要】：隨著科學(xué)技術(shù)的不斷發(fā)展,各行業(yè)中需要一些批量不大、精度要求高的空間曲面零件,僅僅依靠傳統(tǒng)的切削方法很難滿(mǎn)足這些零件的加工需求。在我國(guó)傳統(tǒng)高速走絲電花線(xiàn)切割機(jī)床上,附加數(shù)控回轉(zhuǎn)裝置使工件實(shí)現(xiàn)轉(zhuǎn)、擺聯(lián)動(dòng)是加工空間直紋曲面的有效方法之一。(1)根據(jù)空間直紋曲面電火花線(xiàn)切割加工的運(yùn)動(dòng)規(guī)律及加工特點(diǎn),利用CAM軟件五軸加工模塊實(shí)現(xiàn)了符合線(xiàn)切割特點(diǎn)的復(fù)雜直紋曲面的識(shí)別以及刀路計(jì)算,解決了以往手工編程的難題,并對(duì)其后置處理算法進(jìn)行了推導(dǎo)。(2)建立了極坐標(biāo)加工坐標(biāo)系,在該坐標(biāo)系下對(duì)線(xiàn)切割直紋曲面的相對(duì)速度進(jìn)行了分析,通過(guò)建立該坐標(biāo)系通用數(shù)學(xué)模型推導(dǎo)了幾種基本運(yùn)動(dòng)形式下所形成的典型直紋曲面各點(diǎn)的相對(duì)速度規(guī)律。(3)根據(jù)線(xiàn)切割加工直紋曲面的要求,設(shè)計(jì)了一種小型數(shù)控回轉(zhuǎn)工作臺(tái)以滿(mǎn)足工業(yè)生產(chǎn)的需要,對(duì)其機(jī)械結(jié)構(gòu)與控制部分進(jìn)行了詳細(xì)討論。(4)利用高速走絲線(xiàn)切割機(jī)床進(jìn)行了錐度切割實(shí)驗(yàn)以及平面切割實(shí)驗(yàn),探究切割速度對(duì)表面粗糙度的影響;利用有限元軟件,在強(qiáng)對(duì)流換熱條件下模擬了移動(dòng)熱源的溫度場(chǎng)得到了放電凹痕的大致形狀,并根據(jù)模擬結(jié)果建立了其表面形貌數(shù)學(xué)模型。
[Abstract]:With the development of science and technology, many kinds of space curved surface parts with small batch and high precision are needed in various industries. It is difficult to meet the machining requirements of these parts only by traditional cutting methods. In the traditional high speed wire wire-cutting machine tool in our country, the workpiece can be rotated by adding numerical control rotary device. Pendulum linkage is one of the effective methods for machining spatial straight line surface. (1) according to the motion law and machining characteristics of EDM, Using the CAM software five-axis machining module to realize the recognition of complex straight surface and the calculation of cutter path which accord with the characteristics of linear cutting, and solve the difficult problem of manual programming in the past. The post processing algorithm is deduced. (2) the polar coordinate system is established, and the relative velocity of linear cutting straight surface is analyzed in this coordinate system. By establishing the general mathematical model of the coordinate system, the relative velocity law of the typical straight surface formed under several basic motion forms is derived. (3) according to the requirements of linear cutting machining straight line surface, A small NC rotary table is designed to meet the needs of industrial production. The mechanical structure and control part are discussed in detail. (4) Taper cutting experiments and plane cutting experiments are carried out by using high-speed wire-line cutting machine tools. The influence of cutting speed on surface roughness was investigated, and the approximate shape of discharge indentation was obtained by using finite element software under the condition of strong convection heat transfer, and the mathematical model of surface morphology was established according to the simulation results.
【學(xué)位授予單位】：燕山大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：TG484

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 CIMT’97特種加工機(jī)床評(píng)述組;第五屆中國(guó)國(guó)際機(jī)床展覽會(huì)特種加工機(jī)床展品水平分析(上)[J];電加工;1997年03期

2 郭烈恩,劉正塤,邢曉峰,周大農(nóng),曹躍忠;高速走絲線(xiàn)切割機(jī)多次切割加工電極絲動(dòng)態(tài)性能的研究[J];電加工;1999年06期

3 李朝將;白基成;郭永豐;馬偉;李冬慶;;電火花線(xiàn)切割加工電極絲損耗的溫度場(chǎng)仿真研究[J];電加工與模具;2011年S1期

4 朱寧;葉軍;許慶平;吳國(guó)興;莊昌華;劉斌;;單向走絲電火花線(xiàn)切割機(jī)床直線(xiàn)-旋轉(zhuǎn)軸聯(lián)動(dòng)切割加工[J];電加工與模具;2010年06期

5 陳幼平,庹艾莉,周敬東,袁楚明,周祖德;虛擬制造環(huán)境下數(shù)控機(jī)床的運(yùn)動(dòng)學(xué)建模與仿真[J];計(jì)算機(jī)工程與應(yīng)用;2005年10期

6 彭澤軍;王寶瑞;陳輝;;基于神經(jīng)網(wǎng)絡(luò)的電火花加工工藝選擇模型研究[J];機(jī)械科學(xué)與技術(shù);2006年04期

7 賴(lài)國(guó)庭,吳玉厚,富大偉;PMAC運(yùn)動(dòng)控制器及其時(shí)基控制的應(yīng)用[J];控制工程;2002年05期

8 沈洪;國(guó)外電火花加工技術(shù)與機(jī)床概況[J];模具工業(yè);1994年11期

9 陳云信;吳福明;鄧成文;;基于ANSYS的線(xiàn)切割電極絲振動(dòng)現(xiàn)象的研究[J];煤礦機(jī)械;2006年09期

10 張子杰;高淑榮;田飛;;二次曲面直紋性的工程應(yīng)用[J];數(shù)學(xué)的實(shí)踐與認(rèn)識(shí);2011年03期

相關(guān)碩士學(xué)位論文 前1條

1 張振苓;電火花線(xiàn)切割旋轉(zhuǎn)曲面加工的研究[D];青島科技大學(xué);2009年

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