新型組合式選粉機(jī)總體及分級(jí)部分設(shè)計(jì)【含10張CAD圖紙+PDF圖】
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一、設(shè)計(jì)(論文)內(nèi)容
1、選粉機(jī)總體方案的確定
2、分級(jí)工藝相關(guān)參數(shù)的計(jì)算
3、選粉機(jī)總體設(shè)計(jì)
4、選粉機(jī)分級(jí)部分結(jié)構(gòu)設(shè)計(jì)
二、設(shè)計(jì)(論文)依據(jù)
1、分級(jí)粉體
2、風(fēng)量:3000m3/min
3、產(chǎn)量:120~200t/h
4、電機(jī)功率:100~300kw
三、技術(shù)要求
1、機(jī)械設(shè)計(jì)應(yīng)保證其功能良好、使用可靠、維護(hù)方便;
2、零件結(jié)構(gòu)設(shè)計(jì)要選擇合理的毛坯型式和材料,并盡可能的采用標(biāo)準(zhǔn)件和通用件,并
具有良好的工藝性。
四.畢業(yè)設(shè)計(jì)(論文)物化成果的具體內(nèi)容及要求
1、圖紙工作量
新型組合式選粉機(jī)總裝圖 A0、分級(jí)體部裝圖 A1、鼠籠零件圖 A1,反射棱錐體
部裝圖 A3,相關(guān)的零件一套,并折合成0號(hào)圖樣,不得少于3張。
2、設(shè)計(jì)說(shuō)明書要求
(1)、說(shuō)明書中的總體設(shè)計(jì)及結(jié)構(gòu)設(shè)計(jì)要進(jìn)行多方案比較;
(2)、對(duì)主要零件進(jìn)行強(qiáng)度和剛度計(jì)算與校核;
(3)、說(shuō)明書要有中英文摘要、書寫格式應(yīng)符合學(xué)院的統(tǒng)一要求,并不得少于10000
字;
3、其它要求
設(shè)計(jì)圖樣應(yīng)符合國(guó)家標(biāo)準(zhǔn)中的有關(guān)規(guī)定,并全部用計(jì)算機(jī)繪圖。
五. 畢業(yè)設(shè)計(jì)(論文)進(jìn)度計(jì)劃
起訖日期
工作內(nèi)容
備 注
04.02.16-04.02.27
畢業(yè)實(shí)習(xí)
04.03.01-04.03.12
方案論證
04.03.12-04.05.03
設(shè)計(jì)階段
04.05.03-04.05.20
編寫說(shuō)明書
04.05.20-04.05.24
畢業(yè)設(shè)計(jì)預(yù)答辯
04.05.25-04.06.12
修改設(shè)計(jì)資料
04.06.13-04.06.14
復(fù)查設(shè)計(jì)資料
04.06.16-04.06.18
畢業(yè)答辯
04.06.19-04.06.20
材料整理裝檔
六. 主要參考文獻(xiàn):
1.吳一善.粉碎學(xué)概論.武漢:武漢工業(yè)大學(xué)出版社,1993
2.許林發(fā).建筑材料機(jī)械設(shè)計(jì)(一).武漢:武漢工業(yè)大學(xué)出版社,1990
3.王峰,王皓.篩分機(jī)械.北京:機(jī)械工業(yè)出版社,1998.7
4.潘孝良.硅酸鹽工業(yè)機(jī)械過(guò)程及設(shè)備.武漢:武漢工業(yè)大學(xué)出版社,1993
5.葉達(dá)森.粉碎與制成.北京:中國(guó)建筑工業(yè)出版社,1992
6.陳全德,曹辰等.新型干法水泥生產(chǎn)技術(shù).北京:中國(guó)建筑工業(yè)出版社,1987
7.武漢建筑材料工業(yè)學(xué)院等學(xué)校.水泥生產(chǎn)機(jī)械設(shè)備.北京:中國(guó)建筑工業(yè)出版社,
1979
8.武漢建筑材料工業(yè)學(xué)院等學(xué)校.建筑材料機(jī)械及設(shè)備.北京:中國(guó)建筑工業(yè)出版社,
1980
9.朱昆泉,許林發(fā).建材機(jī)械工程手冊(cè).武漢:武漢工業(yè)大學(xué)出版社,2000.7
10.楮瑞卿.建材通用機(jī)械與設(shè)備.武漢:武漢工業(yè)大學(xué)出版社,1996.9
七、其他
4
畢業(yè)論文任務(wù)書
課題: 新型組合式選粉機(jī)總體及分級(jí)部分設(shè)計(jì)
專 業(yè) 機(jī)械設(shè)計(jì)制造及其自動(dòng)化
學(xué) 生 姓 名 黃 鴻 飛
班 級(jí) 材機(jī)001
學(xué) 號(hào) B0012107
指 導(dǎo) 教 師 姜煜林
教 研 室 主 任 姜煜林
系 主 任 葛 友 華
發(fā) 放 日 期 2004.1
畢業(yè)設(shè)計(jì)開題報(bào)告
課題: 新型組合式選粉機(jī)總體及分級(jí)部分設(shè)計(jì)
專 業(yè) 機(jī)械設(shè)計(jì)制造及其自動(dòng)化
學(xué)生姓名 黃 鴻 飛
班 級(jí) B材機(jī)001
學(xué) 號(hào) B0012107
指導(dǎo)教師 姜煜林
完成日期 2004.3
課題名稱:新型組合式選粉機(jī)總體及分級(jí)部分設(shè)計(jì)
課題類型:
□ 工程設(shè)計(jì)型 □ 工程技術(shù)研究型 □ 軟件開發(fā) □理論研究 (請(qǐng)?jiān)趯?duì)應(yīng)類型前面打√)
一、課題簡(jiǎn)介(課題含義、課題來(lái)源、需要解決的問(wèn)題、已知條件):
課題含義:將O-Sepa型選粉機(jī)精確分級(jí)的原理結(jié)合旋風(fēng)式選粉機(jī)的旋風(fēng)
筒的收集功能以及通過(guò)式選粉機(jī)的粗粉分離功能而組成的新型組合式選粉機(jī),能
處理較大量的含塵氣體,系統(tǒng)中料路、氣路合一,使整個(gè)系統(tǒng)更簡(jiǎn)單, 特別是在
烘干粉磨系統(tǒng)和風(fēng)掃磨系統(tǒng)中,可省去為處理大量含塵氣體而建立的粗粉分離
器系統(tǒng),其優(yōu)越性能更加顯著。選粉機(jī)自帶低阻高效旋風(fēng)收塵器,可將80%的
合格成品收集下來(lái),減輕了下一級(jí)收塵器的處理壓力和工作負(fù)荷,使系統(tǒng)的運(yùn)
轉(zhuǎn)率更高,投資更省,并且,產(chǎn)品細(xì)度調(diào)節(jié)范圍廣,控制簡(jiǎn)單,改變細(xì)度不停
機(jī)。
課題來(lái)源:根據(jù)選粉機(jī)當(dāng)前國(guó)內(nèi)外發(fā)展情況以及企業(yè)實(shí)際需求,而確定該
課題。
需要解決的問(wèn)題:如何將三種選粉機(jī)優(yōu)點(diǎn)有機(jī)的結(jié)合在一起。
已知條件:1、分級(jí)粉體
2、風(fēng)量:3000m3/min
3、產(chǎn)量:120~200t/h
4、電機(jī)功率:100~300kw
二、本課題國(guó)內(nèi)外發(fā)展概況:
圈流粉磨的廣泛應(yīng)用,促進(jìn)了選粉機(jī)的發(fā)展。從選粉機(jī)的性能方面看,可將其分為三代產(chǎn)品。
第一代——普通撒料式空氣選粉機(jī)
這種選粉機(jī)是以給柯(Gayco)型和斯特蒂文特(Sturtevant)型為代表。它們均為空氣在機(jī)內(nèi)循環(huán),利用物料顆粒的離心力和重力不同進(jìn)行分級(jí)的,所以有人把它們稱為內(nèi)部循環(huán)式的離心式選粉機(jī)。
第二代——旋風(fēng)式選粉機(jī)
60年代初,西德維達(dá)格(Wedag)公司為解決第一代空氣在內(nèi)部循環(huán)的空氣選粉機(jī)存在的問(wèn)題,首先發(fā)明了帶多個(gè)小旋風(fēng)筒的空氣動(dòng)態(tài)選粉機(jī),其典型代表就是普通的旋風(fēng)式選粉機(jī)。這種選粉機(jī)的特點(diǎn)是空氣在機(jī)內(nèi)外循環(huán) 。
第三代——高效選粉機(jī)
1979年日本小野田公司開發(fā)了O-SEPA選粉機(jī),不僅保留了旋風(fēng)選式粉機(jī)外循環(huán)的優(yōu)點(diǎn),而且采用籠型轉(zhuǎn)子平面螺旋氣流選粉原理,從而大幅度提高了選粉效率。以它為代表的籠式選粉機(jī)稱為高效選粉機(jī),也被稱為第三代選粉機(jī)。 由于O-SEPA型選粉機(jī)優(yōu)點(diǎn)突出,一些著名的水泥設(shè)備制造公司紛紛參照其工作原理,竟相開發(fā)了各自的第三代選粉機(jī),如丹麥(F.L.Smidth)公司開發(fā)的Sepax型高效選粉機(jī);洪保(KHD)公司開發(fā)的SKH型和ZUB型型高效選粉機(jī)等等。這些選粉機(jī)的工作原理與O-SEPA型選粉機(jī)相同,但結(jié)構(gòu)上各有特點(diǎn)。
目前國(guó)內(nèi)大多數(shù)的水泥生產(chǎn)廠家所用的選粉分級(jí)系統(tǒng)為離心選粉機(jī)、旋風(fēng)式選粉機(jī),而新建的水泥生廠線以配用第三代高效選粉機(jī)為主。
附參考文獻(xiàn):
1 葉達(dá)森.粉碎與制成.北京:中國(guó)建筑工業(yè)出版社,1992
2 吳一善.粉碎學(xué)概論.武漢:武漢工業(yè)大學(xué)出版社,1993
3 許林發(fā).建材機(jī)械工程手冊(cè).武漢:武漢工業(yè)大學(xué)出版社,2000.7
4 王峰,王皓.篩分機(jī)械.北京:機(jī)械工業(yè)出版社,1998.7
5 楮瑞卿.建材通用機(jī)械與設(shè)備.武漢:武漢工業(yè)大學(xué)出版社,1996.9
6 許林發(fā).建筑材料機(jī)械設(shè)計(jì).武漢:武漢工業(yè)大學(xué)出版社,1990
7 武漢建筑材料工業(yè)學(xué)院等學(xué)校.建筑材料機(jī)械及設(shè)備.北京:中國(guó)建筑工業(yè)
出版社,1980
8 武漢建筑材料工業(yè)學(xué)院等學(xué)校.水泥生產(chǎn)機(jī)械設(shè)備.北京:中國(guó)建筑工業(yè)出
版社,1979
9 陳全德,曹辰等.新型干法水泥生產(chǎn)技術(shù).北京:中國(guó)建筑工業(yè)出版社,1987
10 潘孝良. 硅酸鹽工業(yè)機(jī)械過(guò)程及設(shè)備. 武漢:武漢工業(yè)大學(xué)出版社,1993
三、完成本課題的總體設(shè)計(jì)思路(本課題的技術(shù)路線簡(jiǎn)介、總體方案論證、對(duì)本課題完成情況的預(yù)計(jì))
(—)總體設(shè)計(jì)概述:新型組合式選粉機(jī)是籠式高效選粉機(jī)和粗粉分離器以及旋風(fēng)收塵器的緊湊組合, 主體可分為上下兩部分,上部為籠式高效選粉機(jī),為分級(jí)核心;下部相當(dāng)于粗粉分離器,用于初步處理含塵氣體。主體外圍均布多個(gè)旋風(fēng)收塵器,用于收集成品細(xì)粉??蓪⑵錁?gòu)造進(jìn)一步細(xì)劃為:分級(jí)核心鼠籠;安裝在選粉室外部的可調(diào)導(dǎo)風(fēng)葉及固定它們的殼體部分;收集粗粉的下部灰斗;收集細(xì)粉的管道、旋風(fēng)筒;主軸和驅(qū)動(dòng)主軸旋轉(zhuǎn)的傳動(dòng)裝置;總體原理為:從磨機(jī)來(lái)的高濃度含塵空氣由下部風(fēng)管進(jìn)入選粉機(jī),經(jīng)內(nèi)錐體整流后沿外錐體與內(nèi)錐體之間的環(huán)形通道減速上升,其中的粗粉經(jīng)重力沉降后沿外錐體邊壁滑入粗粉收料筒實(shí)現(xiàn)重力分選,重力分選后的空氣在導(dǎo)風(fēng)葉的導(dǎo)流和轉(zhuǎn)子的旋轉(zhuǎn)作用下,在導(dǎo)風(fēng)葉和轉(zhuǎn)子之間形成穩(wěn)定的水平渦流選粉區(qū)。粉磨后的物料從選粉機(jī)進(jìn)料口喂入,其分選原理與O-SEPA選粉機(jī)相同。只是分選后細(xì)小輕微的顆粒隨氣流被吸入內(nèi)部流經(jīng)配風(fēng)室分四路進(jìn)入旋風(fēng)收塵器,大部分成品細(xì)粉被分離出來(lái),收塵后的空氣從旋風(fēng)收塵器上的排風(fēng)管排出,進(jìn)入下一級(jí)收塵設(shè)備。粗重顆粒則下落經(jīng)內(nèi)錐體匯集到粗粉收料筒,返回磨機(jī)再磨。
(二)設(shè)計(jì)思路及主要技術(shù)路線:
1、確定總體結(jié)構(gòu)的組成、框架及各部分的功能與工作目標(biāo);
2、根據(jù)設(shè)計(jì)任務(wù)書的要求,初步計(jì)算各工藝參數(shù)和結(jié)構(gòu)參數(shù);
3、設(shè)計(jì)機(jī)體分級(jí)部分的結(jié)構(gòu)及主要零件結(jié)構(gòu);
4、檢查其加工工藝性和裝配工藝性;
5、保證與其它部分的接口合理;
6、根據(jù)設(shè)計(jì)結(jié)果,修正設(shè)計(jì)參數(shù)。
(三)課題完成情況預(yù)計(jì):
1、物化成果 2、完成時(shí)間
總裝圖一張 04.4.15
部裝圖一張 04.4.20
相關(guān)的主要零件一套 04.4.30
整理完說(shuō)明書 04.5.20
四、課題進(jìn)度安排
04.02.16-04.02.27 畢業(yè)實(shí)習(xí)
04.03.01-04.03.12 方案論證
04.03.12-04.05.03 設(shè)計(jì)階段
04.05.03-04.05.20 編寫說(shuō)明書
04.05.20-04.05.24 畢業(yè)設(shè)計(jì)預(yù)答辯
04.05.25-04.06.12 修改設(shè)計(jì)資料
04.06.13-04.06.14 復(fù)查設(shè)計(jì)資料
04.06.16-04.06.18 畢業(yè)答辯
04.06.19-04.06.20 材料整理裝檔
指導(dǎo)導(dǎo)師意見(jiàn):
指導(dǎo)教師(簽名)
2004年 月 日
教研室意見(jiàn):
教研室主任(簽字)
2004年 月 日
系部意見(jiàn):
部門(公章) 系主任(簽名)
2004年 月 日
鹽城工學(xué)院 本科畢業(yè)設(shè)計(jì)說(shuō)明書 2004
摘 要
新型組合式選粉機(jī)從功能上兼具粗粉分離器和選粉機(jī)性能,變系統(tǒng)氣、料兩路走為一路走,實(shí)現(xiàn)了簡(jiǎn)化系統(tǒng)的目的。本設(shè)計(jì)在機(jī)體的分級(jí)結(jié)構(gòu)中將渦流分級(jí)、慣性分級(jí)、離心分級(jí)原理學(xué)科學(xué)地組合在一起,物料在選粉機(jī)內(nèi)不同部位經(jīng)過(guò)了幾次不同方式的反復(fù)分選、清洗、分離徹底,且從結(jié)構(gòu)上消除了風(fēng)速梯度,保證了分選區(qū)氣流場(chǎng)穩(wěn)定,因而可以達(dá)到較高的選粉效率。其自帶一組低阻高效旋風(fēng)收塵器,可將80%的合格成品收集下來(lái),大大減輕了下一級(jí)收塵器的處理壓力和工作負(fù)荷,使系統(tǒng)的運(yùn)轉(zhuǎn)率更高,投資更省。而且采用下部進(jìn)風(fēng)的型式,使系統(tǒng)阻力更小,工藝布置更緊湊。
關(guān)鍵詞:新型組合式選粉機(jī)、粗粉分離器、分級(jí)
Abstract
New Combined Separator has Thick Powder Separator simultaneously with Separator performance, changing systematic gas and material from two road into one, and have realized easier systematic purpose. It is designed in organism grade the structural eddy current of lieutenant general grade, inertia grade, centrifugation grade principle subject study land make up together. Stock in Separator different positions have passed the relapse of some of different waives grading, wash, split thorough. It has eliminated the gradient of wind speed just from structure, have guaranteed the grading district site of air current stability and may reach higher choose powder efficiency. Taking a group of low resistance efficient whirlwind receive dust ware. It will qualified finished product of 80% collect , also alleviate next a level receipt dust greatly the handling of ware pressure and working load, make systematic operation rate higher and make fewer investment. Meanwhile, it will enter the type of wind with bottom; so it will make systematic resistance less, technical arrangement more compacter.
Keywords: New Combined Separator Thick Powder Separator Grade
鹽城工學(xué)院 本科畢業(yè)設(shè)計(jì)說(shuō)明書 2004
目 錄
0 前言……………………………………………………………………………… 1
1 方案論證………………………………………………………………………… 2
1.1 選粉機(jī)分類…………………………………………………………………… 2
1.2 各類選粉機(jī)的特點(diǎn)…………………………………………………………… 2
1.3 總體結(jié)構(gòu)方案確定…………………………………………………………… 5
1.4 總體設(shè)計(jì)參數(shù)………………………………………………………………… 8
1.5 方案社會(huì)價(jià)值………………………………………………………………… 10
2 結(jié)構(gòu)設(shè)計(jì)………………………………………………………………………… 14
2.1 總體設(shè)計(jì)……………………………………………………………………… 14
2.2 分級(jí)部份結(jié)構(gòu)設(shè)計(jì)…………………………………………………………… 16
3 結(jié)論……………………………………………………………………………… 21
參考文獻(xiàn)………………………………………………………………………… 22
設(shè)計(jì)工作小結(jié)…………………………………………………………………… 23
中北大學(xué)信息商務(wù)學(xué)院
畢業(yè)設(shè)計(jì)英文參考資料
The world's Latest Mechanical Design Concepts
學(xué)生姓名: 邸洋 學(xué)號(hào): 12020144X53
系 別: 機(jī)械工程系
專 業(yè): 機(jī)械設(shè)計(jì)制造及其自動(dòng)化
指導(dǎo)教師: 馬維金 職稱: 教授
2016年 6 月 2 日
世界最新機(jī)械設(shè)計(jì)理念
來(lái)源:中國(guó)科技期刊
摘要:根據(jù)目前國(guó)內(nèi)外設(shè)計(jì)學(xué)者進(jìn)行機(jī)械產(chǎn)品設(shè)計(jì)時(shí)的主要思維特點(diǎn),將產(chǎn)品方案的設(shè)計(jì)方法概括為系統(tǒng)化、結(jié)構(gòu)模塊化、基于產(chǎn)品特征知識(shí)和智能。這幾種方法的特點(diǎn)及其相互間的有機(jī)聯(lián)系,提出產(chǎn)品方案設(shè)計(jì)計(jì)算機(jī)實(shí)現(xiàn)的努力方向。
關(guān)鍵詞:機(jī)械產(chǎn)品方案設(shè)計(jì)方法發(fā)展趨勢(shì)
設(shè)計(jì)文件是將語(yǔ)義設(shè)計(jì)網(wǎng)作為設(shè)計(jì)工具,在其開發(fā)的活性語(yǔ)義設(shè)計(jì)網(wǎng)ASK中,采用結(jié)點(diǎn)和線條組成的網(wǎng)絡(luò)描述設(shè)計(jì),結(jié)點(diǎn)表示元件化的單元(如設(shè)計(jì)任務(wù)、功能、構(gòu)件或加工設(shè)備等),線條用以調(diào)整和定義結(jié)點(diǎn)間不同的語(yǔ)義關(guān)系,由此為設(shè)計(jì)過(guò)程中的所有活動(dòng)和結(jié)果預(yù)先建立模型,使早期設(shè)計(jì)要求的定義到每一個(gè)結(jié)構(gòu)的具體描述均可由關(guān)系間的定義表達(dá),實(shí)現(xiàn)了計(jì)算機(jī)輔助設(shè)計(jì)過(guò)程由抽象到具體的飛躍。
系統(tǒng)化設(shè)計(jì)方法
系統(tǒng)化設(shè)計(jì)方法的主要特點(diǎn)是:將設(shè)計(jì)看成由若干個(gè)設(shè)計(jì)要素組成的一個(gè)系統(tǒng),每個(gè)設(shè)計(jì)要素具有獨(dú)立性,各個(gè)要素間存在著有機(jī)的聯(lián)系,并具有層次性,所有的設(shè)計(jì)要素結(jié)合后,即可實(shí)現(xiàn)設(shè)計(jì)系統(tǒng)所需完成的任務(wù)。
系統(tǒng)化設(shè)計(jì)思想于70年代由德國(guó)學(xué)者Pahl和Beitz教授提出,他們以系統(tǒng)理論為基礎(chǔ),制訂了設(shè)計(jì)的一般模式,倡導(dǎo)設(shè)計(jì)工作應(yīng)具備條理性。德國(guó)工程師協(xié)會(huì)在這一設(shè)計(jì)思想的基礎(chǔ)上,制訂出標(biāo)準(zhǔn)VDI2221技術(shù)系統(tǒng)和產(chǎn)品的開發(fā)設(shè)計(jì)方法。
1. 將用戶需求作為產(chǎn)品功能特征構(gòu)思、結(jié)構(gòu)設(shè)計(jì)和零件設(shè)計(jì)、工藝規(guī)劃、作業(yè)控制等的基礎(chǔ),從產(chǎn)品開發(fā)的宏觀過(guò)程出發(fā),利用質(zhì)量功能布置方法,系統(tǒng)地將用戶需求信息合理而有效地轉(zhuǎn)換為產(chǎn)品開發(fā)各階段的技術(shù)目標(biāo)和作業(yè)控制規(guī)程的方法。
2. 將產(chǎn)品看作有機(jī)體層次上的生命系統(tǒng),并借助于生命系統(tǒng)理論,把產(chǎn)品的設(shè)計(jì)過(guò)程劃分成功能需求層次、實(shí)現(xiàn)功能要求的概念層次和產(chǎn)品的具體設(shè)計(jì)層次。同時(shí)采用了生命系統(tǒng)圖符抽象地表達(dá)產(chǎn)品的功能要求,形成產(chǎn)品功能系統(tǒng)結(jié)構(gòu)。
3. 將機(jī)械設(shè)計(jì)中系統(tǒng)科學(xué)的應(yīng)用歸納為兩個(gè)基本問(wèn)題:一是把要設(shè)計(jì)的產(chǎn)品作為一個(gè)系統(tǒng)處理,最佳地確定其組成部分(單元)及其相互關(guān)系;二是將產(chǎn)品設(shè)計(jì)過(guò)程看成一個(gè)系統(tǒng),根據(jù)設(shè)計(jì)目標(biāo),正確、合理地確定設(shè)計(jì)中各個(gè)方面的工作和各個(gè)不同的設(shè)計(jì)階段。
由于每個(gè)設(shè)計(jì)者研究問(wèn)題的角度以及考慮問(wèn)題的側(cè)重點(diǎn)不同,進(jìn)行方案設(shè)計(jì)時(shí)采用的具體研究方法亦存在差異。下面介紹一些具有代表性的系統(tǒng)化設(shè)計(jì)方法。
4. 設(shè)計(jì)元素法
用五個(gè)設(shè)計(jì)元素(功能、效應(yīng)、效應(yīng)載體、形狀元素和表面參數(shù))描述“產(chǎn)品解”,認(rèn)為一個(gè)產(chǎn)品的五個(gè)設(shè)計(jì)元素值確定之后,產(chǎn)品的所有特征和特征值即已確定。我國(guó)亦有設(shè)計(jì)學(xué)者采用了類似方法描述產(chǎn)品的原理解。
5. 圖形建模法
研制的“設(shè)計(jì)分析和引導(dǎo)系統(tǒng)”KALEIT,用層次清楚的圖形描述出產(chǎn)品的功能結(jié)構(gòu)及其相關(guān)的抽象信息,實(shí)現(xiàn)了系統(tǒng)結(jié)構(gòu)、功能關(guān)系的圖形化建模,以及功能層之間的聯(lián)接。
將設(shè)計(jì)劃分成輔助方法和信息交換兩個(gè)方面,利用Nijssen信息分析方法可以采用圖形符號(hào)、具有內(nèi)容豐富的語(yǔ)義模型結(jié)構(gòu)、可以描述集成條件、可以劃分約束類型、可以實(shí)現(xiàn)關(guān)系間的任意結(jié)合等特點(diǎn),將設(shè)計(jì)方法解與信息技術(shù)進(jìn)行集成,實(shí)現(xiàn)了設(shè)計(jì)過(guò)程中不同抽象層間信息關(guān)系的圖形化建模。
6. “構(gòu)思”—“設(shè)計(jì)”法
將產(chǎn)品的方案設(shè)計(jì)分成“構(gòu)思”和“設(shè)計(jì)”兩個(gè)階段?!皹?gòu)思”階段的任務(wù)是尋求、選擇和組合滿足設(shè)計(jì)任務(wù)要求的原理解?!霸O(shè)計(jì)”階段的工作則是具體實(shí)現(xiàn)構(gòu)思階段的原理解。
將方案的“構(gòu)思”具體描述為:根據(jù)合適的功能結(jié)構(gòu),尋求滿足設(shè)計(jì)任務(wù)要求的原理解。即功能結(jié)構(gòu)中的分功能由“結(jié)構(gòu)元素”實(shí)現(xiàn),并將“結(jié)構(gòu)元素”間的物理聯(lián)接定義為“功能載體”,“功能載體”和“結(jié)構(gòu)元素”間的相互作用又形成了功能示意圖(機(jī)械運(yùn)動(dòng)簡(jiǎn)圖)。方案的“設(shè)計(jì)”是根據(jù)功能示意圖,先定性地描述所有的“功能載體”和“結(jié)構(gòu)元素”,再定量地描述所有“結(jié)構(gòu)元素”和聯(lián)接件(“功能載體”)的形狀及位置,得到結(jié)構(gòu)示意圖。Roper,H.利用圖論理論,借助于由他定義的“總設(shè)計(jì)單元(GE)”、“結(jié)構(gòu)元素(KE)”、“功能結(jié)構(gòu)元素(FKE)”、“聯(lián)接結(jié)構(gòu)元素(VKE)”、“結(jié)構(gòu)零件(KT)”、“結(jié)構(gòu)元素零件(KET)”等概念,以及描述結(jié)構(gòu)元素尺寸、位置和傳動(dòng)參數(shù)間相互關(guān)系的若干種簡(jiǎn)圖,把設(shè)計(jì)專家憑直覺(jué)設(shè)計(jì)的方法做了形式化的描述,形成了有效地應(yīng)用現(xiàn)有知識(shí)的方法,并將其應(yīng)用于“構(gòu)思”和“設(shè)計(jì)”階段。
7. 鍵合圖法
將組成系統(tǒng)元件的功能分成產(chǎn)生能量、消耗能量、轉(zhuǎn)變能量形式、傳遞能量等各種類型,并借用鍵合圖表達(dá)元件的功能解,希望將基于功能的模型與鍵合圖結(jié)合,實(shí)現(xiàn)功能結(jié)構(gòu)的自動(dòng)生成和功能結(jié)構(gòu)與鍵合圖之間的自動(dòng)轉(zhuǎn)換,尋求由鍵合圖產(chǎn)生多個(gè)設(shè)計(jì)方案的方法。
提倡在產(chǎn)品功能分析的基礎(chǔ)上,將產(chǎn)品分解成具有某種功能的一個(gè)或幾個(gè)模塊化的基本結(jié)構(gòu),通過(guò)選擇和組合這些模塊化基本結(jié)構(gòu)組建成不同的產(chǎn)品。這些基本結(jié)構(gòu)可以是零件、部件,甚至是一個(gè)系統(tǒng)。
本結(jié)構(gòu)應(yīng)該具有標(biāo)準(zhǔn)化的接口(聯(lián)接和配合部),并且是系列化、通用化、集成化、層次化、靈便化、經(jīng)濟(jì)化,具有互換性、相容性和相關(guān)性。我國(guó)結(jié)合軟件構(gòu)件技術(shù)和CAD技術(shù),將變形設(shè)計(jì)與組合設(shè)計(jì)相結(jié)合,根據(jù)分級(jí)模塊化原理,將加工中心機(jī)床由大到小分為產(chǎn)品級(jí)、部件級(jí)、組件級(jí)和元件級(jí),并利用專家知識(shí)和CAD技術(shù)將它們組合成不同品種、不同規(guī)格的功能模塊,再由這些功能模塊組合成不同的加工中心總體方案。
以設(shè)計(jì)為目錄作為選擇變異機(jī)械結(jié)構(gòu)的工具,提出將設(shè)計(jì)的解元素進(jìn)行完整的、結(jié)構(gòu)化的編排,形成解集設(shè)計(jì)目錄。并在解集設(shè)計(jì)目錄中列出評(píng)論每一個(gè)解的附加信息,非常有利于設(shè)計(jì)工程師選擇解元素。
網(wǎng)絡(luò)技術(shù)的蓬勃發(fā)展,異地協(xié)同設(shè)計(jì)與制造,以及從用戶對(duì)產(chǎn)品的功能需求→設(shè)計(jì)→加工→裝配→成品這一并行工程的實(shí)現(xiàn)成為可能。但是,達(dá)到這些目標(biāo)的重要前提條件之一,就是實(shí)現(xiàn)產(chǎn)品方案設(shè)計(jì)效果的三維可視化。為此,不僅三維圖形軟件、智能化設(shè)計(jì)軟件愈來(lái)愈多地應(yīng)用于產(chǎn)品的方案設(shè)計(jì)中,虛擬現(xiàn)實(shí)技術(shù)以及多媒體、超媒體工具也在產(chǎn)品的方案設(shè)計(jì)中初露鋒芒。目前,德國(guó)等發(fā)達(dá)國(guó)家正著力于研究超媒體技術(shù)、產(chǎn)品數(shù)據(jù)交換標(biāo)準(zhǔn)STEP,以及標(biāo)準(zhǔn)虛擬現(xiàn)實(shí)造型語(yǔ)言上基于虛擬環(huán)境的標(biāo)準(zhǔn)交換格式)在產(chǎn)品設(shè)計(jì)中的應(yīng)用。
機(jī)械產(chǎn)品的方案設(shè)計(jì)正朝著計(jì)算機(jī)輔助實(shí)現(xiàn)、智能化設(shè)計(jì)和滿足異地協(xié)同設(shè)計(jì)制造需求的方向邁進(jìn),由于產(chǎn)品方案設(shè)計(jì)計(jì)算機(jī)實(shí)現(xiàn)方法的研究起步較晚,目前還沒(méi)有成熟的、能夠達(dá)到上述目標(biāo)的方案設(shè)計(jì)工具軟件。作者認(rèn)為,綜合運(yùn)用文中四種類型設(shè)計(jì)方法是達(dá)到這一目標(biāo)有效途徑。雖然這些方法的綜合運(yùn)用涉及的領(lǐng)域較多,不僅與機(jī)械設(shè)計(jì)的領(lǐng)域知識(shí)有關(guān),而且還涉及到系統(tǒng)工程理論、人工智能理論、計(jì)算機(jī)軟硬件工程、網(wǎng)絡(luò)技術(shù)等各方面的領(lǐng)域知識(shí),但仍然是產(chǎn)品方案設(shè)計(jì)必須努力的方向。國(guó)外在這方面的研究已初見(jiàn)成效,我國(guó)設(shè)計(jì)學(xué)者也已意識(shí)到CAD技術(shù)與國(guó)際交流合作的重要性,及其應(yīng)當(dāng)采取的措施。
基于產(chǎn)品特征知識(shí)設(shè)計(jì)方法的主要特點(diǎn)是:用計(jì)算機(jī)能夠識(shí)別的語(yǔ)言描述產(chǎn)品的特征及其設(shè)計(jì)領(lǐng)域?qū)<业闹R(shí)和經(jīng)驗(yàn),建立相應(yīng)的知識(shí)庫(kù)及推理機(jī),再利用已存儲(chǔ)的領(lǐng)域知識(shí)和建立的推理機(jī)制實(shí)現(xiàn)計(jì)算機(jī)輔助產(chǎn)品的方案設(shè)計(jì)。
機(jī)械系統(tǒng)的方案設(shè)計(jì)主要是依據(jù)產(chǎn)品所具有的特征,以及設(shè)計(jì)領(lǐng)域?qū)<业闹R(shí)和經(jīng)驗(yàn)進(jìn)行推量和決策,完成機(jī)構(gòu)的型、數(shù)綜合。欲實(shí)現(xiàn)這一階段的計(jì)算機(jī)輔助設(shè)計(jì),必須研究知識(shí)的自動(dòng)獲取、表達(dá)、集成、協(xié)調(diào)、管理和使用。為此,國(guó)內(nèi)外設(shè)計(jì)學(xué)者針對(duì)機(jī)械系統(tǒng)方案設(shè)計(jì)知識(shí)的自動(dòng)化處理做了大量的研究工作,采用的方法可歸納為下述幾種。
The worlds Latest Mechanical Design Conceptssource:China Science and Technology JournalAbstract:According to scholars at home and abroad to carry out mechanicaldesign product design features of the main ideas, product design method of theprogramsummarizedassystematic,modularstructure,basedonproductcharacteristics of knowledge and wisdom. The characteristics of these methods andtheir organic connection between them and put forward to achieve the computerproduct design direction.Key words: Mechanical Product Design MethodDevelopment Trends Design documents will be Semantic Web as a design tool inthe design of its Semantic Web activity of the development of ASK, using nodes andlines to describe the design a network, nodes that components of the cell (such asdesign tasks, functions, components or processing equipment, etc. ), used to adjust thelines and definitions between nodes of different semantic relations, thus the designprocess all the activities and results of pre-built models so that the definition of theearly design requirements to the specific description of each structure can be definedby the relationship between the expression, achieved a computer-aided design process,the leap from the abstract to the concrete.Asystematic design methodThe main features of a systematic design method are: the design as designed by anumber of elements of a system, the independence of each design elements, eachelement of an organic link between the existence of, and is layered, with all the designelements , you can design systems to achieve the required task.Systematic design idea in the 70s by the German scholar Professor Pahl andBeitz, the system based on the theory they developed a general pattern of the design,advocacy design work should have organized. German Engineers Association, on thebasis of this design concept to develop a standard VDI2221 technology systems andproduct development design methods.1.The user needs functional characteristics as a product concept, structuredesign and part design, process planning, job control, etc. based on the macro fromthe product development process of starting the use of quality function deploymentmethod and system to user demand information reasonably and efficiently convertedto the various stages of product development, technical goals and operational controlprocedures method.2.The level of the product life of the organism as a system, and means ofliving systems theory, the product design process can be divided into successfulhierarchy of needs to achieve the functional requirements of the conceptual level andproduct level of the specific design. At the same time life-support systems used toexpress the abstract icons of the product functional requirements, system structureformation of product features.3.The mechanical design of the application of systems science into two basicquestions: First, to be designed as a system dealing with the products, the best way todetermine its component parts (modules) and their mutual relations1; is the productdesign process as a system, according to design objectives, a correct and reasonablydetermine the various aspects of the design work and various design stage.Because each designers point of research questions and to consider the questionof emphasis, to design a specific research methods used is also different. Here aresome representative of the systematic design methods.4.Design Element MethodWith the five design elements (functions, effects, effects vector, shape, elements,and surface parameters) describe the product solutions that a product to determinethe value of the five design elements, the product of all the features and characteristicsof the value of i.e. determined. Scholars in China have adopted similar methodsdesigned to describe the products original understanding.5.Graphic modeling methodAnd developed a design analysis and guidance systems KALEIT, with thelevel of clear graphic description of a products functional structure and its associatedabstract information, to the system structure and function relationship of graphicalmodeling, and functional connection between the layers 2.Assistance will be designed to be divided into two aspects of methodology andexchange of information using the Nijssen Information Analysis Method can be usedgraphic symbols, with a rich semantic model structure, can be described as integrationconditions, can be divided into types of constraints can be achieved in relationsbetween any combination of characteristics , the design method to solve integrationand information technology to realize the design process of information betweendifferent abstraction layers between the graphical modeling.6.Concept - Design methodProducts design is divided into concept and design in two stages. Conceptphase of the task is to find, choose and mix to meet the requirements of the originalunderstanding of design tasks. Design stage of work is a concrete realization of theoriginal understanding of the conceptual stage.Of the programs idea of specific described as: In accordance with theappropriate functional structure, seeking to meet the design requirements of theoriginal understanding of the task. The functional structure of the sub-function isperformed by the structural elements to achieve, and structural elements of thephysical connection between the definition of a feature vector, feature vector andstructural elements further the interaction between the formation of the functionaldiagram ( mechanical diagram). The program design is based on functional diagram,the first qualitative description of all of the feature vector and structural elements,and then quantitatively describe all the structural elements and the connection parts( feature vectors), the shape and location to be structure diagram3. Roper, H. usinggraph theory, by means of which he defines as the total design unit (GE), structuralelements (KE), functional structural elements (FKE), connect structural elements(VKE), Structural Parts (KT), structure element part (KET) concepts, as well asdescribe the structure element size, location, and transmission parameters of theinteractions between a number of kinds of schematics, the intuitive designprofessionals have done a formal design method a description of the formation of aneffective application of existing knowledge, methods, and applied to ideas anddesign stage.7.Bond Graph MethodFunction of the composition of system components will be divided into produceenergy, consumed energy, changing energy forms, such as various types of energytransfer, and to use bond graphs to express the function component solution, hoping tofunction-based model and bond graph combine to achieve functional structure theautomatic generation and functional structure with the bond graph automaticconversion between the search for bond graph generated by a number of designmethods.To promote the product on the basis of functional analysis, the product has somefeatures broken down into one or several modular basic structure, by selection andcombination of the basic structure of these modular form into different products.These basic structures can be parts, components, or even a system.The structure should have a standardized interface (connection and co-operationdepartment),andisserialized,universal,integrated,hierarchical,agile,economic-oriented, with interchangeability, compatibility and relevance. Chinascombination of software component technology and CAD technology, variant designcombined with the modular design, according to modular principle of classification,will be divided into descending Machining Center Machine Tool product level,component level, component level and component level, and use expert knowledgeand CAD technology to combine them into different species, different specificationsof functional blocks, and then by the combination of these functions into differentmodules of the overall program processing center.To design a directory as an alternative variation of the mechanical structure ofthe tool, the solution proposed by the design elements of a complete, structured layout,the formation of the solution set design catalogs. And in the solution set designed tocomment on each one listed in the directory solution additional information, is verybeneficial to design engineers select solution elements.The vigorous development of network technology, collaborative design andmanufacturing, as well as the product from the users functional requirements design processing assembly finished product of this realization of concurrentengineering possible. However, an important prerequisite to achieve these goals oneof the conditions is to realize the effect of product design three-dimensionalvisualization. To this end, three-dimensional graphics software, more and moreintelligent design software programs used in the product design, virtual realitytechnology and multimedia, hypermedia tools for product design is also its first debut.At present, Germany and other developed countries are focused on researchhypermedia technology, product data exchange standard STEP, as well as standardvirtual reality modeling language based on a standard exchange format for virtualenvironments) in the product design applications.Mechanical product design is moving in computer-aided realization of intelligentdesign and to meet the needs of distributed collaborative design and manufacture ofdirection, due to the computer product design Study on the implementation startedlate, not yet mature, to achieve the above objectives program design tools4. Authorbelieves that the integrated use of paper, four types of design method is an effectiveway to achieve this goal. Although the integrated use of these methods are moreinvolved in the field, not only with the mechanical design of the field-relatedknowledge, but also to the systems engineering theory, artificial intelligence theory,computer hardware and software engineering, network technology areas such asdomain knowledge, it is still product design must be working for. Abroad in researchin this area has achieved initial success, our scholars have been aware of CAD designtechnology and the importance of international exchange and cooperation, and itsmeasures to be taken.Feature-based design methodology of knowledge The main features are: using acomputer can identify the language to describe the characteristics of the product andits design experts in the field of knowledge and experience to establish the appropriateknowledge base and inference engine, re-use of stored domain knowledge and theestablishment of the inference mechanism to bring computer-aided product design.The mechanical system design is mainly based on the characteristics of a product,and design experts in the field of knowledge and experience to push volume anddecision-making, the completion of body type, the number of synthesis. To achievethis stage of computer-aided design, must study the automatic acquisition ofknowledge, expression, integration, coordination, management and use. To this end,the design and scholars at home and abroad program for the mechanical systemdesign knowledge of the automated processing done a lot of research work, theapproach can be summarized into the following several.
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