《數(shù)控編程》課程設(shè)計(jì)說(shuō)明書(shū)

1、數(shù)控編程課程設(shè)計(jì)專用紙 機(jī)制專業(yè)0702班 xx 第一章 設(shè)計(jì)任務(wù)書(shū) 1 課程設(shè)計(jì)概述數(shù)控編程課程設(shè)計(jì)實(shí)訓(xùn)是機(jī)械設(shè)計(jì)制造及自動(dòng)化專業(yè)的必修課程之一，它可以提高學(xué)生的動(dòng)手能力，豐富學(xué)生的理論知識(shí)。是一門(mén)理論與實(shí)踐相結(jié)合的綜合性專業(yè)基礎(chǔ)課。通過(guò)數(shù)控編程課程設(shè)計(jì)實(shí)訓(xùn)的學(xué)習(xí)，要求學(xué)生能夠獨(dú)立設(shè)計(jì)箱體和型腔殼體類零件，能獨(dú)立完成零件的實(shí)體造型，繪制工程圖，并能夠合理的選擇卡具和加工設(shè)備，分析加工工藝，獨(dú)立完成數(shù)控編程，生成nc代碼，最終完成零件的加工。本課程設(shè)計(jì)不僅提高了學(xué)生的設(shè)計(jì)能力，繪圖能力，編程能力，還可以鍛煉其機(jī)床操作能力，對(duì)今后的工作和學(xué)習(xí)打下堅(jiān)實(shí)的基礎(chǔ)。2 設(shè)計(jì)目的通過(guò)本次課程設(shè)計(jì)，了解并掌

2、握利用pro/e軟件對(duì)零件進(jìn)行結(jié)構(gòu)設(shè)計(jì)能力，計(jì)算機(jī)繪圖能力及掌握計(jì)算機(jī)輔助制造過(guò)程和方法，培養(yǎng)自動(dòng)編程的技能。掌握數(shù)控機(jī)床進(jìn)行機(jī)械加工的基本方法，鞏固數(shù)控加工編程的相關(guān)知識(shí)，將理論知識(shí)與實(shí)際工作結(jié)合起來(lái)，并最終達(dá)到能夠獨(dú)立從事數(shù)控加工程序編制的工作能力。3 設(shè)計(jì)任務(wù)根據(jù)本任務(wù)書(shū)提供的零件圖及相關(guān)技術(shù)要求，用pro/e軟件完成零件設(shè)計(jì)，工程圖繪制，零件工藝分析，加工工序卡的編制，用pro/e或mastercam軟件進(jìn)行數(shù)控加工程序的編制，最后用華中hnc-21m數(shù)控機(jī)床加工出所設(shè)計(jì)工件。課程設(shè)計(jì)題目不限，但內(nèi)容需滿足設(shè)計(jì)要求。4 設(shè)計(jì)要求1) 繪制零件圖。了解該零件在部件或總成中的位置和功用，以

3、及部件或總成對(duì)該零件提出的技術(shù)要求；找出其主要技術(shù)要求和技術(shù)關(guān)鍵，并在下面擬定工藝規(guī)程時(shí)予以考慮；對(duì)所加工的零件進(jìn)行結(jié)構(gòu)工藝性分析，分析其結(jié)構(gòu)特點(diǎn)；檢查所給零件圖的完整性和正確性，完成該零件的實(shí)體結(jié)構(gòu)設(shè)計(jì)并按照機(jī)械制圖標(biāo)準(zhǔn)繪制其零件圖。2) 編制零件數(shù)控加工工藝規(guī)程。在對(duì)零件進(jìn)行詳細(xì)分析的基礎(chǔ)上，按照數(shù)控加工工藝確定原則，確定整個(gè)零件的加工工藝規(guī)程，確定毛坯，確定加工的工藝基準(zhǔn)；擬定零件的工藝路線，包括確定各加工表面的加工方法、正確劃分加工階段、合理安排加工工序的順序、選擇工裝、刀具、量具，并對(duì)其加工工藝參數(shù)進(jìn)行確定；確定對(duì)刀點(diǎn)和換刀點(diǎn)。3) 確定夾具及夾緊方案。對(duì)某一道相對(duì)復(fù)雜的工序，在確定

4、定位裝夾方案的基礎(chǔ)上，選擇一個(gè)合適的夾具，完成本工序的加工。該夾具應(yīng)具有定位可靠，裝卸方便、操作安全方便省力、夾緊可靠且適當(dāng)?shù)忍攸c(diǎn)，適合于數(shù)控機(jī)床的加工使用。4）確定零件設(shè)計(jì)原點(diǎn)與加工原點(diǎn)。對(duì)將進(jìn)行數(shù)控加工的工序，確定加工零點(diǎn)、換刀方式，確定其編程坐標(biāo)系，并最終通過(guò)繪制數(shù)控加工編程坐標(biāo)系的方式予以明確。標(biāo)識(shí)對(duì)刀點(diǎn)和換刀點(diǎn)。5）編制零件加工工藝并編制數(shù)控加工程序。參照數(shù)控加工編程坐標(biāo)系圖，按照數(shù)控加工工藝規(guī)程，采用自動(dòng)編程方式對(duì)該工序進(jìn)行數(shù)控程序的編制，生成nc代碼，并在數(shù)控仿真軟件上進(jìn)行調(diào)試。6）現(xiàn)場(chǎng)加工。將已經(jīng)調(diào)試好的零件加工程序?qū)霐?shù)控機(jī)床，安裝好所需刀具，夾緊工件，對(duì)刀找到編程原點(diǎn)，進(jìn)行

5、數(shù)控加工。7）編寫(xiě)課程設(shè)計(jì)說(shuō)明書(shū)。設(shè)計(jì)說(shuō)明書(shū)需打印：正文：宋體五號(hào)，單倍行距；頁(yè)眉：宋體小五號(hào)，內(nèi)容包括 班級(jí) 姓名 數(shù)控編程課程設(shè)計(jì)說(shuō)明書(shū)字樣；設(shè)計(jì)結(jié)果包括：設(shè)計(jì)任務(wù)書(shū)，設(shè)計(jì)思路，設(shè)計(jì)步驟，設(shè)計(jì)過(guò)程的說(shuō)明和階段結(jié)果，并附有零件實(shí)體模型圖，工程圖，工藝分析方案，刀具和夾具選擇方案，現(xiàn)場(chǎng)加工結(jié)果。第二章 實(shí)體建模2.1 建立新文件啟動(dòng)pre/engineer，單擊“文件”“新建”命令，系統(tǒng)彈出“新建”對(duì)話框，選擇“零件”“實(shí)體”類型，取消缺省，確認(rèn)后選擇公制模板，進(jìn)入實(shí)體建模及環(huán)境。2.2使用拉伸工具建立模型長(zhǎng)方形基體（1）使用拉伸工具建立模型，單擊基礎(chǔ)特征工具欄上的“拉伸”按鈕，選擇草繪基準(zhǔn)面

6、top面，進(jìn)入草繪工作環(huán)境。畫(huà)一長(zhǎng)方形尺寸為120mm 150mm然后拉伸20mm，再畫(huà)四個(gè)圓30mm，向下拉伸5mm。制作如圖模型：（2）點(diǎn)擊確定，選擇：（3）單擊確定按鈕，得到實(shí)體圖：2.2 使用拉伸工具建立正方形凸臺(tái)（1）用拉伸修改模型，選top面作為基準(zhǔn)，畫(huà)一個(gè)正方形的邊框，再在邊長(zhǎng)中點(diǎn)為圓心畫(huà)40mm的圓去掉交線，然后點(diǎn)擊確定，正向拉伸35mm后確定后得到，如圖 ：2.3 使用拉伸工具建立正六邊形凹槽（1）使用拉伸作圖，選擇模型凸面為基準(zhǔn)面，進(jìn)入草繪，做邊長(zhǎng)為20mm的正六邊形拉伸5mm，再做邊長(zhǎng)為15mm的正六邊形向下拉伸5mm ：（2）點(diǎn)擊確定，選擇：（3）再點(diǎn)擊確定就有如圖模型

7、：2.4使用拉伸工具去除材料建立模型中心孔（1）使用拉伸工具，選擇模型正六邊形凹槽為基準(zhǔn)面，進(jìn)入草繪，做中心孔如圖： （2）點(diǎn)擊確定，選擇：（3）再點(diǎn)擊確定就有如圖模型：2.5使用倒圓角工具建立圓角（1）使用倒圓角工具，做倒圓角，得到最后的零件實(shí)體圖： 平板型單向凸臺(tái)模型建立完成。第三章 數(shù)控加工工藝3.1數(shù)控加工的基本過(guò)程及工藝描述（1）確定數(shù)控加工的內(nèi)容。（2）進(jìn)行零件工藝加工的工藝分析。（3）數(shù)控加工的工藝設(shè)計(jì)。（4）工件裝夾。（5）后處理工作。3.2 機(jī)床的選擇（1）數(shù)控機(jī)床主要的規(guī)格的尺寸應(yīng)與工件的輪廓尺寸相適應(yīng)，做到設(shè)備的合理使用。（2）機(jī)床的工作精度與工序要求的加工精度相適應(yīng)。根

8、據(jù)零件的加工精度要求選擇機(jī)床，如精度要求低的粗加工工序，應(yīng)選擇精度低的機(jī)床，精度要求高的精加工工序，應(yīng)選用精度高的機(jī)床。（3）機(jī)床的功率與剛度以及機(jī)動(dòng)范圍應(yīng)與工序的性質(zhì)和最合適的切削用量相適應(yīng)。如粗加工工序去除的毛呸余量大，切削余量選得大，就要求機(jī)床有大的功率和較好的剛度。（4）裝夾方便、夾具結(jié)構(gòu)簡(jiǎn)單也是選擇數(shù)控設(shè)備是需要考慮的一個(gè)因素。選擇采用臥式數(shù)控機(jī)床，還是選擇立式數(shù)控機(jī)床，將直接影響所選擇的夾具的結(jié)構(gòu)和加工坐標(biāo)系，直接關(guān)系到數(shù)控編程的難以程度和數(shù)控加工的可靠性。 所以此處選擇數(shù)控機(jī)床為華中數(shù)控hnc-21m3.3 確定毛坯尺寸毛坯分為鑄件、鍛件、型材、焊接件和冷沖壓件。鑄件適用于形狀較

9、復(fù)雜的零件，毛坯；鍛件適用于強(qiáng)度要求高、形狀比較簡(jiǎn)單的毛坯；型材有熱軋和冷拉兩種。熱軋適用于尺寸較大、精度較低的毛坯。冷拉適用于尺寸較小、精度較高的毛坯；焊接件是根據(jù)需要將型材或鋼材等焊接而成的毛坯件；冷沖壓件可以加工接件成品的工件。 因?yàn)楸玖慵螤畈粡?fù)雜而機(jī)械性能要求又不高，故選用型材。熱加工型材尺寸比較大、精度較低，尺寸公差無(wú)要求，表面粗糙度為12.5um-6.3um,適合于各種批量的生產(chǎn)，多用于一般零件的毛坯，適合本零件的使用。故選用熱加工型材。由零件圖可知，選用硬鋁適合。毛坯具體尺寸為：長(zhǎng)x寬x高=150mmx120mmx43mm。3.4 刀具的選擇3.5 確定夾具及夾緊方案本零件加工

10、需要使用一組夾具，所有加工步驟使用虎鉗進(jìn)行定位加緊，然后進(jìn)行加工。3.6 加工工藝分析1）該零件為凸臺(tái)工作臺(tái)，是一個(gè)方塊形的零件。圖中加工輪廓數(shù)據(jù)充分，尺寸清晰，無(wú)尺寸封閉等缺陷。2）零件尺寸標(biāo)準(zhǔn)注整，輪廓描述清晰，零件結(jié)構(gòu)合理。3）零件材料選?。哼x用硬鋁，無(wú)熱處理和硬度要求，材料切削加工性能良好。4）無(wú)特殊熱處理要求。5）本零件為單件生產(chǎn)綜合以上，可以簡(jiǎn)述為：加工部位為上表面，凹槽，上表面有一中心孔。故具體總方案為選一尺寸合適的硬鋁毛坯，選用硬鋁，在立式數(shù)控銑床上加工此平面;然后對(duì)此平面進(jìn)行加工進(jìn)行挖槽，最后對(duì)中心孔進(jìn)行加工。雖然無(wú)特殊表面粗糙度要求，但保證尺寸精度和位置精度要求。3.7 工

11、藝參數(shù)計(jì)算（見(jiàn)附件3） 計(jì)算公式主軸轉(zhuǎn)速n= 1000vc/d 進(jìn)給速度vf1=fznvc 切削速度 d 刀具直徑 f 刀具每齒進(jìn)給率 z 齒數(shù) n 主軸轉(zhuǎn)數(shù)加工工序具體計(jì)算見(jiàn)附件三3.8 工序卡零 件 名 稱零件材料夾 具使用設(shè)備班 級(jí)姓 名日 期單向凸臺(tái)底座ly12虎鉗華中數(shù)銑0702xx11.28工步號(hào)工步內(nèi)容所選加工方式刀具號(hào)刀具規(guī)格及名稱主軸轉(zhuǎn)速（r/min）進(jìn)給速度（mm/min）被吃刀量（mm）1銑平面平面銑削t0145mm172122銑內(nèi)凹槽挖槽t0210mm1146114643銑外凹槽挖槽t0210mm1146114644銑凸臺(tái)挖槽t0310mm1146114645鉆孔鉆孔t

12、055mm12613156擴(kuò)孔鉆孔t0610mm630157第四章 加工仿真4.1編制零件加工工藝文件導(dǎo)入mastercam 的加工設(shè)置 設(shè)置加工原點(diǎn)及毛胚。（1） 平面銑削 平面銑削粗加工和精加工選用同一把刀具。工件上表面寬度為120mm，面寬比較大，擬選用雙向來(lái)回z形切削。則選用45mm的數(shù)控硬質(zhì)合金可轉(zhuǎn)位面銑刀，選擇刀齒數(shù)為8。 設(shè)面銑刀分二次銑削到指定的高度，粗銑切深為2mm，留下1mm的精加工余量。（2 ）內(nèi)正六邊形凹槽的加工 凹槽的粗加工和精加工都用同一把立銑刀。分析零件可得選用=10mm的三齒立銑刀比較合適。因?yàn)橛嗔勘容^大，要分層銑削。 =10mm的立銑刀，有4 個(gè)刀齒。 2 ）

13、外正六邊形凹槽的加工 凹槽的粗加工和精加工都用同一把立銑刀。分析零件可得選用=10mm的三齒立銑刀比較合適。因?yàn)橛嗔勘容^大，要分層銑削。 =10mm的立銑刀，有4 個(gè)刀齒。加工參數(shù)：如圖所示。邊界在加工：如圖所示。分層銑削：加工路線：（3）花型凸臺(tái)的加工使用“挖槽一般挖槽”加工形式對(duì)工件花型內(nèi)凸臺(tái)進(jìn)行銑削加工，10mm的平銑刀（高速鋼刀具），背吃刀量4mm，加工深度15mm，采用雙向切削方式。（4）零件1/4圓形凹槽銑削使用“挖槽邊界再加工”加工形式對(duì)工件1/4圓形凹槽進(jìn)行銑削加工，10mm的平銑刀（高速鋼刀具），背吃刀量4mm，加工深度5mm，采用平行環(huán)切并清角切削方式。（5） 打中心孔 中

14、心孔選用=5mm的中心鉆鉆削。因?yàn)榈毒咧睆奖容^小，可以選用比較大的轉(zhuǎn)速，選用主軸轉(zhuǎn)速s=1600r/min,進(jìn)給速度為f=160mm/min。（6）鉆孔 鉆中心孔，選用10mm的高速鋼麻花鉆。進(jìn)給量為0.1mm/r，切削速度。4.2加工工序總圖4.3加工刀軌總圖根據(jù)華中后處理，生成nc文件。4.4 模擬加工通過(guò)mastercam軟件生成nc代碼（見(jiàn)附件），使用斯沃?jǐn)?shù)控仿真軟件進(jìn)行仿真加工，選擇華中數(shù)控hnc21m ，設(shè)置毛坯120mm80mm33mm的zl412 鋁，使用平口虎鉗夾并抬高一定安全距離進(jìn)行裝夾，刀具安裝順序與工序卡一致，經(jīng)過(guò)對(duì)刀，確定零件設(shè)計(jì)原點(diǎn)與加工原點(diǎn)（x0，y0，z43），

15、建立加工坐標(biāo)系，使用nc代碼進(jìn)行仿真加工。加工結(jié)果如圖：第五章 參考文獻(xiàn)數(shù)控加工概論，李誠(chéng)人編著，清華大學(xué)出版社，2006年出版。數(shù)控加工自動(dòng)編程，吳明有編著，清華大學(xué)出版社，2008年出版。數(shù)控加工課程設(shè)計(jì)指導(dǎo)，張秀珍、馮偉編著，機(jī)械工業(yè)出版社，2009年出版。第六章 感想為期一周的課程設(shè)計(jì)結(jié)束了，在這一周的學(xué)習(xí)中，我學(xué)到了很多，也現(xiàn)自己身上的很多不足，感受很多，受益匪淺。 從開(kāi)始的第一天，我就對(duì)本次任務(wù)進(jìn)行了規(guī)劃分析，在以后的幾天里，我努力的查閱資料、跟別的同學(xué)討論、請(qǐng)教老師、分析零件圖并進(jìn)行三維建模與數(shù)控加工、仿真，比較好完成自己的課程設(shè)計(jì)任務(wù)。這次課程設(shè)計(jì)是對(duì)我們學(xué)的數(shù)控加工工藝與編程

16、這門(mén)課的一次深入學(xué)習(xí)。平時(shí)在課堂上接觸的都是純理論的知識(shí)，學(xué)的都是課堂上東西，對(duì)課堂以的了解得很少，這一次的學(xué)習(xí)讓我們開(kāi)闊了視野。這次課程設(shè)計(jì)利用到了pro/e來(lái)建模，mastercam 9.0來(lái)進(jìn)行自動(dòng)編程，斯沃?jǐn)?shù)控仿真系統(tǒng)進(jìn)行程序的檢驗(yàn)。在次過(guò)程中，我對(duì)這些軟件又有了進(jìn)一步的認(rèn)識(shí)。課程設(shè)計(jì)中總是會(huì)遇到問(wèn)題，首先是自己獨(dú)立的進(jìn)行思考，自己沒(méi)辦法解決就得去請(qǐng)教別人，并通過(guò)查閱相關(guān)資料來(lái)解決問(wèn)題。在整個(gè)過(guò)程中，我不但學(xué)習(xí)到了知識(shí)，還提高了自己的學(xué)習(xí)能力，提高了自己解決問(wèn)題的能力，學(xué)會(huì)與人溝通，真是學(xué)到很多東西。nc代碼%1000n100g0g40g54g49g80g90m6t1n102g0g90

17、x-124.5y-59.998s848m3n104z100.n106z53.n108g1z41.f169.6n110x102.f339.2n112g3y-29.999r15.n114g1x-102.n116g2y0.r15.n118g1x102.n120g3y29.999r15.n122g1x-102.n124g2y59.998r15.n126g1x124.5n128z40.f169.6n130x-102.f339.2n132g3y29.999r15.n134g1x102.n136g2y0.r15.n138g1x-102.n140g3y-29.999r15.n142g1x102.n144g2y

18、-59.998r15.n146g1x-124.5n148g0z100.n150m5n152m01(tool - 2 dia. off. - 2 len. - 2 dia. - 10.)n154t2m6n156g0g90g54x84.75y-59.75s3819m3n158z100.n160z50.n162g1z35.5f763.8n164x74.75f1527.6n166x-74.75n168y59.75n170x74.75n172y-59.75n174x71.728y-59.729n176x68.708y-59.708n178x65.69y-59.688n180x62.675y-59.667

19、n182x59.662y-59.646n184x56.652y-59.625n186x53.644y-59.604n188x50.638y-59.583n190x47.635y-59.563n192x44.634y-59.542n194x41.636y-59.521n196x38.64y-59.5n198x35.646y-59.479n200x32.654y-59.458n202x29.665y-59.438n204x26.679y-59.417n206x23.694y-59.396n208x20.713y-59.375n210x17.733y-59.354n212x14.756y-59.33

20、4n214x11.781y-59.313n216x8.809y-59.292n218x5.839y-59.271n220x2.871y-59.25n222x-.094y-59.229n224x-3.057y-59.209n226x-6.018y-59.188n228x-8.976y-59.167n230x-11.932y-59.146n232x-14.885y-59.125n234x-17.828y-59.091n236x-20.769y-59.057n238x-23.707y-59.021n240x-26.642y-58.985n242x-29.574y-58.947n244x-32.503

21、y-58.909n246x-35.429y-58.87n248x-38.353y-58.831n250x-41.273y-58.79n252x-44.191y-58.748n254x-47.106y-58.706n256x-50.018y-58.663n258x-52.927y-58.619n260x-55.833y-58.574n262x-58.737y-58.528n264x-61.637y-58.482n266x-64.535y-58.435n268x-67.43y-58.386n270x-70.322y-58.337n272x-73.211y-58.287n274x-73.248y-5

22、5.387n276x-73.231y-52.435n278x-73.214y-49.486n280x-73.199y-46.539n282x-73.183y-43.595n284x-73.168y-40.653n286x-73.154y-37.714n288x-73.14y-34.777n290x-73.127y-31.843n292x-73.114y-28.911n294x-73.072y-25.982n296x-73.029y-23.055n298x-72.986y-20.131n300x-72.942y-17.209n302x-72.898y-14.29n304x-72.854y-11.

23、373n306x-72.809y-8.459n308x-72.763y-5.548n310x-72.717y-2.638n312x-72.671y.268n314x-72.624y3.172n316x-72.576y6.074n318x-72.528y8.973n320x-72.48y11.87n322x-72.431y14.764n324x-72.382y17.656n326x-72.332y20.545n328x-72.281y23.432n330x-72.23y26.316n332x-72.179y29.197n334x-72.127y32.076n336x-72.075y34.953n

24、338x-72.022y37.827n340x-71.969y40.699n342x-71.915y43.568n344x-71.861y46.434n346x-71.806y49.299n348x-71.751y52.16n350x-71.695y55.019n352x-71.639y57.876n354x-68.723y57.855n356x-65.81y57.834n358x-62.9y57.813n360x-59.991y57.793n362x-57.086y57.772n364x-54.182y57.751n366x-51.281y57.73n368x-48.382y57.709n3

25、70x-45.486y57.688n372x-42.592y57.668n374x-39.7y57.647n376x-36.811y57.626n378x-33.924y57.605n380x-31.039y57.584n382x-28.157y57.563n384x-25.277y57.543n386x-22.4y57.522n388x-19.525y57.501n390x-16.652y57.48n392x-13.782y57.459n394x-10.914y57.439n396x-8.049y57.418n398x-5.186y57.397n400x-2.325y57.376n402x.

26、534y57.355n404x3.39y57.334n406x6.243y57.314n408x9.095y57.293n410x11.943y57.272n412x14.79y57.251n414x17.605y57.179n416x20.416y57.107n418x23.225y57.033n420x26.032y56.959n422x28.835y56.884n424x31.635y56.808n426x34.433y56.731n428x37.227y56.653n430x40.019y56.574n432x42.808y56.495n434x45.594y56.415n436x48

27、.378y56.334n438x51.158y56.252n440x53.935y56.169n442x56.71y56.085n444x59.482y56.001n446x62.251y55.916n448x65.017y55.83n450x67.78y55.743n452x70.54y55.655n454x70.596y52.864n456x70.601y50.025n458x70.607y47.189n460x70.613y44.355n462x70.619y41.523n464x70.626y38.694n466x70.634y35.868n468x70.642y33.044n470x

28、70.65y30.222n472x70.659y27.403n474x70.595y24.587n476x70.531y21.773n478x70.466y18.961n480x70.401y16.152n482x70.335y13.346n484x70.268y10.542n486x70.201y7.74n488x70.134y4.941n490x70.066y2.145n492x69.998y-.649n494x69.929y-3.44n496x69.859y-6.229n498x69.789y-9.016n500x69.719y-11.8n502x69.648y-14.581n504x6

29、9.577y-17.36n506x69.505y-20.136n508x69.433y-22.91n510x69.36y-25.682n512x69.287y-28.451n514x69.213y-31.217n516x69.139y-33.981n518x69.064y-36.742n520x68.989y-39.501n522x68.913y-42.257n524x68.837y-45.011n526x68.76y-47.763n528x68.683y-50.511n530x68.606y-53.258n532x68.528y-56.002n534x65.719y-55.981n536x6

30、2.913y-55.96n538x60.109y-55.939n540x57.308y-55.918n542x54.509y-55.898n544x51.712y-55.877n546x48.918y-55.856n548x46.126y-55.835n550x43.336y-55.814n552x40.549y-55.793n554x37.765y-55.773n556x34.982y-55.752n558x32.202y-55.731n560x29.424y-55.71n562x26.649y-55.689n564x23.876y-55.668n566x21.106y-55.648n568

31、x18.338y-55.627n570x15.572y-55.606n572x12.808y-55.585n574x10.047y-55.564n576x7.289y-55.543n578x4.533y-55.523n580x1.779y-55.502n582x-.973y-55.481n584x-3.722y-55.46n586x-6.469y-55.439n588x-9.213y-55.419n590x-11.955y-55.398n592x-14.695y-55.377n594x-17.381y-55.267n596x-20.064y-55.157n598x-22.744y-55.045

32、n600x-25.421y-54.933n602x-28.096y-54.82n604x-30.768y-54.706n606x-33.436y-54.591n608x-36.102y-54.475n610x-38.765y-54.359n612x-41.425y-54.242n614x-44.083y-54.123n616x-46.737y-54.004n618x-49.389y-53.885n620x-52.038y-53.764n622x-54.683y-53.642n624x-57.326y-53.52n626x-59.967y-53.397n628x-62.604y-53.273n6

33、30x-65.238y-53.148n632x-67.87y-53.022n634x-67.945y-50.342n636x-67.972y-47.615n638x-67.999y-44.892n640x-68.027y-42.17n642x-68.056y-39.451n644x-68.085y-36.735n646x-68.114y-34.021n648x-68.144y-31.31n650x-68.174y-28.601n652x-68.205y-25.895n654x-68.119y-23.191n656x-68.033y-20.49n658x-67.946y-17.791n660x-

34、67.859y-15.095n662x-67.771y-12.401n664x-67.682y-9.71n666x-67.594y-7.022n668x-67.504y-4.335n670x-67.415y-1.652n672x-67.324y1.03n674x-67.233y3.708n676x-67.142y6.384n678x-67.05y9.058n680x-66.958y11.729n682x-66.866y14.398n684x-66.772y17.064n686x-66.679y19.728n688x-66.584y22.389n690x-66.49y25.048n692x-66

35、.395y27.704n694x-66.299y30.357n696x-66.203y33.009n698x-66.106y35.657n700x-66.009y38.303n702x-65.912y40.947n704x-65.814y43.588n706x-65.715y46.227n708x-65.616y48.863n710x-65.516y51.496n712x-65.416y54.127n714x-62.715y54.107n716x-60.015y54.086n718x-57.319y54.065n720x-54.624y54.044n722x-51.932y54.023n724

36、x-49.242y54.002n726x-46.555y53.982n728x-43.87y53.961n730x-41.187y53.94n732x-38.507y53.919n734x-35.829y53.898n736x-33.153y53.878n738x-30.48y53.857n740x-27.809y53.836n742x-25.141y53.815n744x-22.475y53.794n746x-19.811y53.773n748x-17.15y53.753n750x-14.491y53.732n752x-11.835y53.711n754x-9.181y53.69n756x-

37、6.529y53.669n758x-3.879y53.648n760x-1.232y53.628n762x1.412y53.607n764x4.055y53.586n766x6.694y53.565n768x9.332y53.544n770x11.967y53.524n772x14.6y53.503n774x17.157y53.355n776x19.711y53.207n778x22.263y53.057n780x24.811y52.907n782x27.357y52.756n784x29.9y52.604n786x32.44y52.451n788x34.977y52.298n790x37.5

38、11y52.143n792x40.043y51.988n794x42.571y51.832n796x45.097y51.675n798x47.62y51.517n800x50.14y51.359n802x52.657y51.199n804x55.171y51.039n806x57.682y50.878n808x60.191y50.716n810x62.697y50.553n812x65.199y50.389n814x65.293y47.819n816x65.342y45.205n818x65.392y42.594n820x65.442y39.986n822x65.492y37.38n824x6

39、5.543y34.776n826x65.594y32.175n828x65.646y29.577n830x65.698y26.981n832x65.751y24.387n834x65.643y21.796n836x65.535y19.208n838x65.426y16.622n840x65.317y14.038n842x65.207y11.457n844x65.097y8.879n846x64.986y6.303n848x64.875y3.729n850x64.763y1.158n852x64.651y-1.41n854x64.538y-3.976n856x64.425y-6.54n858x6

40、4.312y-9.101n860x64.197y-11.659n862x64.083y-14.215n864x63.968y-16.768n866x63.852y-19.319n868x63.736y-21.868n870x63.619y-24.414n872x63.502y-26.957n874x63.385y-29.498n876x63.267y-32.036n878x63.148y-34.572n880x63.029y-37.106n882x62.91y-39.636n884x62.79y-42.165n886x62.669y-44.691n888x62.549y-47.214n890x

41、62.427y-49.735n892x62.305y-52.253n894x59.71y-52.232n896x57.118y-52.212n898x54.528y-52.191n900x51.94y-52.17n902x49.355y-52.149n904x46.772y-52.128n906x44.192y-52.107n908x41.614y-52.087n910x39.038y-52.066n912x36.464y-52.045n914x33.893y-52.024n916x31.325y-52.003n918x28.758y-51.983n920x26.195y-51.962n922

42、x23.633y-51.941n924x21.074y-51.92n926x18.517y-51.899n928x15.963y-51.878n930x13.411y-51.858n932x10.861y-51.837n934x8.314y-51.816n936x5.769y-51.795n938x3.226y-51.774n940x.686y-51.753n942x-1.852y-51.733n944x-4.387y-51.712n946x-6.92y-51.691n948x-9.451y-51.67n950x-11.979y-51.649n952x-14.505y-51.629n954x-

43、16.933y-51.443n956x-19.359y-51.257n958x-21.781y-51.069n960x-24.201y-50.881n962x-26.618y-50.692n964x-29.032y-50.502n966x-31.443y-50.312n968x-33.852y-50.12n970x-36.257y-49.928n972x-38.66y-49.735n974x-41.06y-49.541n976x-43.457y-49.346n978x-45.851y-49.15n980x-48.242y-48.954n982x-50.63y-48.756n984x-53.01

44、6y-48.558n986x-55.398y-48.359n988x-57.778y-48.159n990x-60.155y-47.958n992x-62.529y-47.757n994x-62.642y-45.296n996x-62.713y-42.795n998x-62.784y-40.297n1000x-62.856y-37.801n1002x-62.928y-35.308n1004x-63.001y-32.817n1006x-63.074y-30.329n1008x-63.148y-27.843n1010x-63.222y-25.36n1012x-63.297y-22.879n1014

45、x-63.167y-20.401n1016x-63.037y-17.925n1018x-62.906y-15.452n1020x-62.775y-12.981n1022x-62.643y-10.513n1024x-62.511y-8.047n1026x-62.378y-5.584n1028x-62.245y-3.123n1030x-62.112y-.665n1032x-61.978y1.791n1034x-61.843y4.244n1036x-61.708y6.695n1038x-61.573y9.143n1040x-61.437y11.589n1042x-61.3y14.032n1044x-

46、61.163y16.473n1046x-61.026y18.911n1048x-60.888y21.346n1050x-60.749y23.78n1052x-60.61y26.21n1054x-60.471y28.638n1056x-60.331y31.064n1058x-60.19y33.487n1060x-60.05y35.908n1062x-59.908y38.326n1064x-59.766y40.742n1066x-59.624y43.155n1068x-59.481y45.565n1070x-59.338y47.973n1072x-59.194y50.379n1074x-56.70

47、6y50.358n1076x-54.221y50.337n1078x-51.737y50.317n1080x-49.257y50.296n1082x-46.778y50.275n1084x-44.302y50.254n1086x-41.829y50.233n1088x-39.357y50.212n1090x-36.888y50.192n1092x-34.422y50.171n1094x-31.958y50.15n1096x-29.496y50.129n1098x-27.037y50.108n1100x-24.58y50.088n1102x-22.125y50.067n1104x-19.673y

48、50.046n1106x-17.223y50.025n1108x-14.775y50.004n1110x-12.33y49.983n1112x-9.887y49.963n1114x-7.447y49.942n1116x-5.009y49.921n1118x-2.573y49.9n1120x-.14y49.879n1122x2.291y49.858n1124x4.719y49.838n1126x7.146y49.817n1128x9.569y49.796n1130x11.991y49.775n1132x14.41y49.754n1134x16.709y49.531n1136x19.006y49.

49、306n1138x21.3y49.081n1140x23.591y48.855n1142x25.879y48.628n1144x28.165y48.401n1146x30.447y48.172n1148x32.727y47.943n1150x35.003y47.712n1152x37.277y47.481n1154x39.548y47.249n1156x41.816y47.017n1158x44.082y46.783n1160x46.344y46.548n1162x48.604y46.313n1164x50.86y46.077n1166x53.114y45.84n1168x55.365y45.

50、602n1170x57.613y45.363n1172x59.858y45.124n1174x59.991y42.773n1176x60.083y40.385n1178x60.176y38.n1180x60.27y35.617n1182x60.364y33.236n1184x60.459y30.858n1186x60.554y28.483n1188x60.65y26.109n1190x60.746y23.739n1192x60.842y21.371n1194x60.691y19.005n1196x60.539y16.642n1198x60.386y14.282n1200x60.233y11.9

51、24n1202x60.079y9.568n1204x59.925y7.215n1206x59.771y4.865n1208x59.616y2.517n1210x59.46y.171n1212x59.304y-2.172n1214x59.148y-4.512n1216x58.991y-6.85n1218x58.834y-9.185n1220x58.676y-11.518n1222x58.517y-13.849n1224x58.358y-16.177n1226x58.199y-18.502n1228x58.039y-20.825n1230x57.879y-23.146n1232x57.718y-2

52、5.463n1234x57.557y-27.779n1236x57.395y-30.092n1238x57.233y-32.402n1240x57.07y-34.71n1242x56.906y-37.016n1244x56.743y-39.318n1246x56.578y-41.619n1248x56.414y-43.917n1250x56.249y-46.212n1252x56.083y-48.505n1254x53.702y-48.484n1256x51.323y-48.463n1258x48.947y-48.442n1260x46.573y-48.422n1262x44.201y-48.

53、401n1264x41.832y-48.38n1266x39.466y-48.359n1268x37.101y-48.338n1270x34.739y-48.317n1272x32.379y-48.297n1274x30.022y-48.276n1276x27.667y-48.255n1278x25.315y-48.234n1280x22.965y-48.213n1282x20.617y-48.193n1284x18.271y-48.172n1286x15.928y-48.151n1288x13.588y-48.13n1290x11.25y-48.109n1292x8.914y-48.088n1294x6.58y-48.068n1296x4.249y-48.047n1298x1.92y-48.026n1300x-.406y-48.005n1302x-2.73y-47.984n1304x-5.052y-47.963n1306x-7.371y-47