外圓無心磨床導(dǎo)輪架結(jié)構(gòu)設(shè)計
31頁 11000字數(shù)+論文說明書+任務(wù)書+3張CAD圖紙【詳情如下】
外圓無心磨床導(dǎo)輪架結(jié)構(gòu)設(shè)計開題報告.doc
外圓無心磨床導(dǎo)輪架結(jié)構(gòu)設(shè)計論文.doc
外圓磨床砂輪架部件圖.dwg
外圓磨總裝圖.dwg
外文翻譯--數(shù)控系統(tǒng)在平面磨床上應(yīng)用現(xiàn)狀與發(fā)展趨勢.doc
導(dǎo)輪架裝配圖.dwg
目錄
第1章 緒論 2
1.1 磨床的類型與用途 2
1.1.1 磨床的類型及其特點 2
1.1.2 磨床的用途 3
1.1.3 外圓磨削和端面外圓磨床 4
1.2 磨床的現(xiàn)狀及其發(fā)展趨勢 5
第2章:課題意義及任務(wù) 7
第3章 磨床總體布局 8
3.1 磨床總體設(shè)計 8
3.2、總體設(shè)計注意事項 8
3.3 磨床總體布局設(shè)計 8
3.3.1 加工零件 8
3.3.2 初步估計組成部分 8
3.3.3 總體布局初步設(shè)計 8
3.3.4 縱向與橫向尺寸的確定 9
3.3.5 導(dǎo)輪架相關(guān)尺寸設(shè)計 11
3.3.6 頭架相關(guān)尺寸的確定 14
3.3.7 尾架相關(guān)尺寸的確定 15
3.3.8 工作臺 15
3.3.9 橫向進給機構(gòu) 15
3.3.10 砂輪修整器 15
第4章 部件設(shè)計(導(dǎo)輪架) 16
4.1 導(dǎo)輪架設(shè)計的基本要求 16
4.2 主軸旋轉(zhuǎn)精度及其提高措施 16
4.3 主軸軸承系統(tǒng)的剛性 16
4.4 導(dǎo)輪架主軸初步設(shè)計 16
4.5 主軸剛度校核 18
4.6 動靜壓軸承 19
4.7 傳動裝置設(shè)計 20
結(jié)論 29
致謝 30
參考文獻 31
第1章 緒論
1.1 磨床的類型與用途
1.1.1 磨床的類型及其特點
用磨料磨具(砂輪、砂帶、油石和研磨料等)為工具進行切削加工的機床,統(tǒng)稱為磨床(英文為Grinding machine),它們是因精加工和硬表面的需要而發(fā)展起來的[1]。
磨床種類很多,主要有:外圓磨床、內(nèi)圓磨床、平面磨床、工具磨床和用來磨削特定表面和工件的專門化磨床,如花鍵軸磨床、凸輪軸磨床、曲軸磨床等[2]。
對外圓磨床來說,又可分為普通外圓磨床、萬能外圓磨床、無心外圓磨床、 寬砂輪外圓磨床、端面外圓磨床等
以上均為使用砂輪作切削工具的磨床。此外,還有以柔性砂帶為切削工具的砂帶磨床,以油石和研磨劑為切削工具的精磨磨床等。
磨床與其他機床相比,具有以下幾個特點:
1、磨床的磨具(砂輪)相對于工件做高速旋轉(zhuǎn)運動(一般砂輪圓周線速度在35米/秒左右,目前已向200米/秒以上發(fā)展);
2、它能加工表面硬度很高的金屬和非金屬材料的工件;
3、它能使工件表面獲得很高的精度和光潔度;
4、易于實現(xiàn)自動化和自動線,進行高效率生產(chǎn);
5、磨床通常是電動機---油泵---發(fā)動部件,通過機械,電氣,液壓傳動---傳動部件帶動工件和砂輪相對運動---工件部分組成[1]。
1.1.2 磨床的用途
磨床可以加工各種表面,如內(nèi)、外圓柱面和圓錐面、平面、漸開線齒廓面、螺旋面以及各種成形表面。磨床可進行荒加工、粗加工、精加工和超精加工,可以進行各種高硬、超硬材料的加工,還可以刃磨刀具和進行切斷等,工藝范圍十分廣泛。
隨著科學(xué)技術(shù)的發(fā)展,對機械零件的精度和表面質(zhì)量要求越來越高,各種高硬度材料的應(yīng)用日益增多。精密鑄造和精密鍛造工藝的發(fā)展,使得有可能將毛坯直接磨成成品。高速磨削和強力磨削,進一步提高了磨削效率。因此,磨床的使用范圍日益擴大。它在金屬切削機床所占的比重不斷上升。目前在工業(yè)發(fā)達的國家中,磨床在機床總數(shù)中的比例已達30%----40%。
據(jù)1997年歐洲機床展覽會(EMO)的調(diào)查數(shù)據(jù)表明,25%的企業(yè)認為磨削是他們應(yīng)用的最主要的加工技術(shù),車削只占23%, 鉆削占22%,其它占8%;而磨床在企業(yè)中占機床的比例高達42%,車床占23%,銑床占22%,鉆床占14%[3]。由此可見,在精密加工當中,有許多零部件是通過精密磨削來達到其要求的,而精密磨削加工會要在相應(yīng)的精密磨床上進行,因此精密磨床在精密加工中占有舉足輕重的作用。但是要實現(xiàn)精密磨削加工,則所用的磨床就應(yīng)該滿足以下幾個基本要求:
1.高幾何精度。 精密磨床應(yīng)有高的幾何精度,主要有砂輪主軸的回轉(zhuǎn)精度和導(dǎo)軌的直線度以保證工件的幾何形狀精度。主軸軸承可采用液體靜壓軸承、短三塊瓦或長三塊瓦油膜軸承,整體度油楔式動壓軸承及動靜壓組合軸承等。當前采用動壓軸承和動靜壓軸承較多。主軸的徑向圓跳動一般應(yīng)小于1um,軸向圓跳動應(yīng)限制在2—3um以內(nèi)。
2.低速進給運動的穩(wěn)定性。 由于砂輪的修整導(dǎo)程要求10—15mm/min,因此工作臺必須低速進給運動,要求無爬行和無沖擊現(xiàn)象并能平穩(wěn)工作。
3.減少振動。 精密磨削時如果產(chǎn)生振動,會對加工質(zhì)量產(chǎn)生嚴重不良影響。故對于精密磨床,在結(jié)構(gòu)上應(yīng)考慮減少振動。
4.減少熱變形。 精密磨削中熱變形引起的加工誤差會達到總誤差的50%,故機床和工藝系統(tǒng)的熱變形已經(jīng)成為實現(xiàn)精密磨削的主要障礙
1.1.3 外圓磨削和端面外圓磨床
1.外圓磨削
在外圓磨削過程中,工件是安裝在兩頂尖的中心之間,砂輪旋轉(zhuǎn)是引起切削旋轉(zhuǎn)的主要來源和原因。基本得外圓磨削方法有兩種,即橫磨法磨外圓和縱磨法磨外圓,如圖1-1和圖1-2所示。
事實上,外圓磨削可以通過其他以下幾種方法來實施:
(1)傳遞方法:在這種方法中,磨削砂輪和工件旋轉(zhuǎn)以及徑向進給都應(yīng)滿足所有的整個長度,切削的深度是由磨削砂輪到工件的縱向進給來調(diào)整的。
(2)沖壓切削方法:在這種方法中,磨削是通過砂輪的縱向進給和無軸向進給來完成的,正如我們所看到的,只有在表面成為圓柱的寬度比磨削輪磨損寬度短時,這種方法才能完成。
為了克服現(xiàn)有無心磨床的導(dǎo)輪傳動裝置的技術(shù)不足,本實用新型提供一 種無心磨床的導(dǎo)輪傳動裝置,該導(dǎo)輪傳動裝置結(jié)構(gòu)簡單、生產(chǎn)成本低,使磨 床的加工精度進一步提高,傳動裝置勿需經(jīng)常進行調(diào)整,并且可降低對伺服 電機功率的要求。問題所采用的技術(shù)方案是:設(shè)有異輪機頭座,導(dǎo) 輪機頭座的下端經(jīng)軸承安裝有導(dǎo)輪主軸,導(dǎo)輪主軸上固定有導(dǎo)輪,導(dǎo)輪主軸 的端部固定有蝸輪,導(dǎo)輪機頭座上固定有伺服電機,伺服電機的轉(zhuǎn)軸上安裝 有蝸桿,蝸桿與蝸輪相嚙合。用于無心磨床,結(jié)構(gòu)簡單、生產(chǎn)成本低,蝸 輪與蝸桿之間傳動平穩(wěn)、無振動,可以保證旋轉(zhuǎn)體以很高的精密度旋轉(zhuǎn),加 工高精密度產(chǎn)品,傳動動力大,可降低對伺服電機功率的要求,從而節(jié)約電能。
結(jié)論
經(jīng)過三個多月的努力,我順利完成了畢業(yè)設(shè)計的任務(wù),對磨床的設(shè)計過程有了一個基本的認識,特別對數(shù)控高速端面外圓磨床MKS1632A的設(shè)計過程有了深刻和清晰的了解。這次畢業(yè)設(shè)計是對我大學(xué)四年所學(xué)知識的一次綜合應(yīng)用,它涉及到機械制圖、機械制造技術(shù)、機械原理、機械設(shè)計、機械裝備設(shè)計、液壓系統(tǒng)設(shè)計、數(shù)控技術(shù)、互換性和測量技術(shù)、單片機、電子信息技術(shù)等多門課程的內(nèi)容,使我對知識的綜合知識的運用有了很大的提高。
本次設(shè)計的數(shù)控高速端面外圓磨床MKS1632A可以同時加工帶軸肩類零件的外圓和端面,從而提高了磨削效率,減少加工時間,節(jié)省工件的生產(chǎn)成本。
在數(shù)控高速端面外圓磨床MKS1632A的設(shè)計過程中,郭老師讓我們四個人每人負責一部分,我負責的是數(shù)控高速端面外圓磨床MKS1632A的導(dǎo)輪架部分。起初我們四個人在一起討論磨床的總體布局圖,每個人提出自己的想法,然后由大家來討論,在這樣的討論和交流中,我們都學(xué)到了不少知識,知道自己方案的優(yōu)點和缺點,最后我們討論出來一套最優(yōu)方案。
本次畢業(yè)設(shè)計我負責的部件是導(dǎo)輪架,導(dǎo)輪架是磨床上用來帶動砂輪作高速旋轉(zhuǎn)的關(guān)鍵部件,主要由傳動部件和主軸軸承部分組成,主軸與軸承是導(dǎo)輪架的主要組成部分。首先是根據(jù)導(dǎo)輪架主軸的要求進行軸的設(shè)計,然后再選取軸承,設(shè)計皮帶和皮帶輪等等。在這個過程中,軸的撓度校核、皮帶和皮帶輪的設(shè)計等用到了大量的計算。
由于磨床是高精密加工機床,對各部件的設(shè)計要求都較高。為了提高旋轉(zhuǎn)精度,我主要做了以下工作:
1.在選擇軸承的時候,我選用了動靜壓軸承。,動靜壓混合軸承是一種既綜合了液體動壓和靜壓軸承的優(yōu)點,又克服了兩著缺點的新型多油楔油膜軸承。它利用靜壓軸承的節(jié)流原理,使壓力油腔中產(chǎn)生足夠大的靜壓軸承載力,從而克服了液體動壓軸承啟動和停止時出現(xiàn)的干摩擦造成主軸與軸承磨損現(xiàn)象,提高了主軸和軸承的使用壽命及精度保持性;軸承油腔大多采用淺腔結(jié)構(gòu),在主軸啟動后,依靠淺腔階梯效應(yīng)形成的動壓承載力和靜壓承載力疊加,大大地提高了主軸承載能力,而多腔對置結(jié)構(gòu)又極大地增加了主軸剛度;高壓油膜的均化作用和良好的抗振性能,保證了主軸具有很高旋轉(zhuǎn)精度和運轉(zhuǎn)平穩(wěn)性。
動靜壓軸承廣泛用于高速精密設(shè)備中.目前,在改造舊精密磨削設(shè)備方面,用得較多的是北京中航設(shè)備改造廠的WMB型表面節(jié)流液體動靜壓混合軸承。
2.在導(dǎo)輪架傳動裝置設(shè)計中,采用了多楔帶皮帶和多楔帶帶輪。多楔帶兼有V帶和平帶的優(yōu)點,外輪廓尺寸小,比V型帶傳動平穩(wěn)。多楔帶以平帶為基體,內(nèi)表面有等距離縱向楔型的環(huán)形帶傳動,工作面為楔側(cè)面。
3.為了減少外載荷對導(dǎo)輪架主軸的影響,提高導(dǎo)輪架主軸的承載能力,在帶輪的安裝方面,采用了卸荷皮帶輪的方案,即多楔帶皮帶輪不是直接安裝在導(dǎo)輪架主軸上,而是安裝在支架上,然后通過花鍵套來傳遞扭矩,帶動導(dǎo)輪架主軸旋轉(zhuǎn)。這種方案的好處是導(dǎo)輪架承受的軸向力大大地減小了,導(dǎo)輪架主要承受扭矩,達到減小導(dǎo)輪架主軸變形、提高導(dǎo)輪架主軸的承載能力和提高旋轉(zhuǎn)精度等目的。
需要補充一點的是,在導(dǎo)輪架主軸的設(shè)計中,因為軸的中間部分只有一部分需要進行精加工,以便安裝動靜壓軸承,其余部分則沒有什么特殊的加工要求??紤]到加工成本的問題,我采取將導(dǎo)輪架主軸中間一部分半徑減小的方法,從而減少了精加工的長度,減小了工件的加工成本,但這樣做會減小導(dǎo)輪架主軸的剛度。
這次畢業(yè)設(shè)計對我大學(xué)所學(xué)的知識進行了綜合,對我運用知識的能力有了很大提高,特別是培養(yǎng)了我理論結(jié)合實際的作風(fēng),改變了我以前設(shè)計不切合實際的想法,很多設(shè)計力求標準化和規(guī)范化。
致謝
經(jīng)過三個多月的努力,畢業(yè)設(shè)計已接近尾聲了。在老師的指導(dǎo)下,我順利地完成了本次畢業(yè)設(shè)計的全部任務(wù)。老師淵博的知識、嚴謹?shù)闹螌W(xué)態(tài)度和高度的責任心給我留下了很深刻的印象,同時也給我的學(xué)習(xí)、工作、生活以很大的影響,使我受益匪淺。值此論文完成之際,謹向?qū)煴硎局孕牡母兄x,并感謝同組同學(xué)對我的合作和支持。
此外,具有豐富磨床設(shè)計經(jīng)驗的老師給我們?nèi)M同學(xué)悉心講解圖紙和解答疑問,在次也表示衷心的感謝。最后,院里的領(lǐng)導(dǎo)和其他老師也給了我很大的關(guān)心,再一次對大家表示衷心的感謝!
參考文獻
[1] 上海機床廠.磨床設(shè)計制造(上冊和下冊).上海:上海人民出版社,1972.
[2] 曾志新,呂明.機械制造技術(shù)基礎(chǔ)在[M].武漢:武漢理工大學(xué)出版社,2001.
[3] 姚 俊.CIMT2001平面磨床展品評述[J].精密制造與自動化,2001
[4] 李伯民,趙波主編.現(xiàn)代磨削技術(shù)[M].北京:機械工業(yè)出版社,2003.
[5] 濮良貴,紀名剛.機械設(shè)計[M].北京:高等教育出版社,2001.
[6] 范云漲,陳兆年.金屬切削機床簡明手冊[M]. 北京:機械工業(yè)出版社,1994.
[7] 馮辛安,黃玉美.機械制造裝備設(shè)計[M].北京,機械工業(yè)出版社;2002.
[8] 王昆,何小柏.機械設(shè)計課程設(shè)計[M]. 北京:高等教育出版社,2001.
[9] 溫松明主編.互換性與測量技術(shù)基礎(chǔ)[M].長沙:湖南大學(xué)出版社,2000.
[10] 《機械設(shè)計手冊》聯(lián)合編寫組.機械設(shè)計手冊(中)[M].北京,化學(xué)工業(yè)出版社;1983.
[11] 戴曙..金屬切削機床[M].北京:機械工業(yè)出版社,1995.
[12] 成大先.機械設(shè)計圖冊[M].北京:化學(xué)工業(yè)出版社,2000.
[13] 劉潭玉,黃素華,熊逸珍.畫法幾何及機械制圖[M].長沙:湖南大學(xué)出版社,1998.
[14] 孫桓,陳作模.機械原理[M].北京:高等教育出版社,2001.
[15] 史美堂主編.金屬材料及熱處理[M].上海:上??茖W(xué)技術(shù)出版社,2001.
畢業(yè)設(shè)計(論文)外文資料翻譯學(xué)院 (系): 機械工程學(xué)院 專 業(yè): 機械工程及自動化 姓 名: 學(xué) 號: 外文出處: Digital system in the horizontal grinder application of the status quo and development trend 附 件: 1.外文資料翻譯譯文;2.外文原文。 指導(dǎo)教師評語:本文簡單介紹了數(shù)控系統(tǒng)在平面磨床上應(yīng)用的概念,詳細闡述了各種類型的平面磨床的切削性能及其特點,并簡單介紹了其發(fā)展趨勢。翻譯用詞比較準確,文筆也較為通順,為在以后工作中接觸英文資料打下了基礎(chǔ)。簽名: 年 月 日注:請將該封面與附件裝訂成冊。附件 1:外文資料翻譯譯文數(shù)控系統(tǒng)在平面磨床上應(yīng)用現(xiàn)狀與發(fā)展趨勢現(xiàn)代工業(yè)生產(chǎn)中,中、小批量零件的生產(chǎn)占產(chǎn)品數(shù)量的比例越來越高,零件的復(fù)雜性和精度要求迅速提高,傳統(tǒng)的普通機床已經(jīng)越來越難以適應(yīng)現(xiàn)代化生產(chǎn)的要求,而數(shù)控機床具有高精度、高效率、一機多用,可以完成復(fù)雜型面加工的特點,特別是計算機技術(shù)的迅猛發(fā)展并廣泛應(yīng)用于數(shù)控系統(tǒng)中,數(shù)控裝置的主要功能幾乎全由軟件來實現(xiàn),硬件幾乎能通用,從而使其更具加工柔性,功能更加強大。前言:制造業(yè)的競爭已從早期降低勞動力成本、產(chǎn)品成本,提高企業(yè)整體效率和質(zhì)量的競爭,發(fā)展到全面滿足顧客要求、積極開發(fā)新產(chǎn)品的競爭,將面臨知識--技術(shù)--產(chǎn)品的更新周期越來越短,產(chǎn)品批量越來越小,而對質(zhì)量、性能的要求更高,同時社會對環(huán)境保護、綠色制造的意識不斷加強。因此敏捷先進的制造技術(shù)將成為企業(yè)贏得競爭和生存、發(fā)展的主要手段。計算機信息技術(shù)和制造自動化技術(shù)的結(jié)合越來越緊密,作為自動化柔性生產(chǎn)重要基礎(chǔ)的數(shù)控機床在生產(chǎn)機床中所占比例將越來越多。一、數(shù)控平面磨現(xiàn)狀及主要數(shù)控系統(tǒng) 平面磨床相對于車床、銑床等采用數(shù)控系統(tǒng)較晚,因為它對數(shù)控系統(tǒng)的特殊要求。近十幾年來,借助 CNC技術(shù),磨床上砂輪的連續(xù)修整,自動補償,自動交換砂輪,多工作臺,自動傳送和裝夾工件等操作功能得以實現(xiàn),數(shù)控技術(shù)在平面磨床上逐步普及。在近年漢諾威、東京、芝加哥、及國內(nèi)等大型機床展覽會上,CNC 磨床在整個磨床展品中已占大多數(shù),如德國 BLOHM公司,ELB 公司等著名磨床制造廠已經(jīng)不再生產(chǎn)普通磨床,日本的岡本、日興等公司也成批生產(chǎn)全功能 CNC平磨,在開發(fā)高檔數(shù)控平磨的同時,積極發(fā)展中、低檔數(shù)控平磨。前幾年德國 ELB公司生產(chǎn)的 BRILLIANT系列二坐標 CNC成型磨床,其垂直和橫向為數(shù)控軸,縱向為液壓控制,砂輪修整采用安裝在工作臺上的金剛石滾輪,適用范圍較廣;SUPER-BRILLIANT 系列是三坐標 CNC平面和成型磨床,床身用天然花崗巖制成,幾何精度極高,導(dǎo)軌用直線滾動導(dǎo)軌,機械驅(qū)動無反沖,從而保證工件有較好的表面光潔度;BRILLIANT-FUTURE 為以上二個系列的改進產(chǎn)品,床身用人造花崗巖制作,縱向用靜壓導(dǎo)軌,齒形帶傳動,垂直和橫向?qū)к墳轭A(yù)加荷直線滾動導(dǎo)軌,滾珠絲杠傳動,三軸 CNC控制 AC伺服電機,0.5μm的測量分辨率。同時 ELB公司開發(fā)了具有當代最新技術(shù)的磨床產(chǎn)品,即以機電一體化和計算機技術(shù)為基礎(chǔ)的 CAM-MASTER系列柔性磨加工單元,CAD-MASTER系列和 COMPACT-MASTER系列磨削加工中心,控制軸最多可達到 24軸,另外由于全面推行模塊化設(shè)計,使專用磨床制造周期縮短,ELB 公司還開發(fā)了多種高效專用磨床,如 SFVG100/2專用磨床,具有可傾斜磨頭,連續(xù)修整,緩進給,斜切入磨削功能,用十一根 CNC控制軸,如同一臺磨加工中心。英國JONES&SHIPMAN公司與美國 A-B公司開發(fā)了 A-B8600數(shù)控系統(tǒng)用于 FORMAT5型數(shù)控平磨,由 CNC控制液壓閥,驅(qū)動縱向可調(diào)速運動,橫向與磨頭進給用滾珠絲杠副,直流伺服電機驅(qū)動,間斷式砂輪修整,CRT 圖形模擬顯示。同時還可以配用其他型號的數(shù)控系統(tǒng),以滿足不同用戶的要求。目前,隨半導(dǎo)體集成度的不斷提高,新推出的系統(tǒng)在外型上越來越小,結(jié)構(gòu)上越來越緊湊,功能上增加了遠程通訊,遠程診斷,多機聯(lián)網(wǎng)等等;操作界面向 WINDOWS系統(tǒng)靠近,增加鼠標,搖控器等操作件。FANUC 公司今年主要推出 18I、16I、20I、21I 系統(tǒng),SIEMENS 是 840D、810D、802D 均為結(jié)構(gòu)緊湊型系統(tǒng)。還有一些廠商如:臺灣精密機械研究發(fā)展中心開發(fā)的 PA8000NT系列 CNC控制器,就使用了 WINDOWS NC操作系統(tǒng),和 NT即時多工處理核心,單節(jié)程序處理速度達 2000塊/秒,單節(jié)預(yù)讀處理數(shù)可達 1000塊,具有 AART(預(yù)適應(yīng)調(diào)節(jié)技術(shù))及參數(shù)最佳化學(xué)習(xí)功能,可使跟隨誤差趨近于零,軟件加工路徑濾波器可降低切削過程中,因加速度變化過大所產(chǎn)生的機械共振,從而改善表面粗糙度;配用伺服靈活,具備+、-10V 類比伺服界面,同時提供國際標準的SERCOS數(shù)字伺服通訊界面;PLC 程序設(shè)計有梯形圖、結(jié)構(gòu)語句、功能塊、指令碼、流程圖等五種語法,便于設(shè)計、溝通和維護;具有計算機遠程通訊,即時遠程維護功能;控制軸和主軸最多可擴展到 64軸,I/O 點可擴展到 792/528點,采用奔騰處理器,高速 PLC處理速度達到 25K。 世界上除有名的 SIEMENS、FANUC 等數(shù)控系統(tǒng)專業(yè)廠已經(jīng)開發(fā)生產(chǎn)了許多適用于平面或成型磨削的系統(tǒng)外,一些平磨生產(chǎn)廠本身也積極開發(fā)了適用于其磨床的數(shù)控系統(tǒng)。主要有:西門子公司的 SINUMERIK 840D 系統(tǒng),該系統(tǒng)具有二十多根伺服軸,坐標連續(xù)行程控制,手動數(shù)據(jù)輸入或通過外部計算機輸入,遠程診斷,可隨砂輪直徑減小而變化行程,砂輪修整量自動補償,滾珠絲杠間隙誤差補償?shù)取?西門子 3G系統(tǒng)是專為磨削加工而開發(fā)的,裝有用來人機對話的操作提示裝置,在軸線傾斜時,也可進行直線和圓弧插補,在磨削中經(jīng)常出現(xiàn)的運行循環(huán),如主軸擺動,用外部信號中斷執(zhí)行程序,砂輪切入,砂輪修整等專用準備功能,編制固定循環(huán)程序。其不僅能使用外部測量裝置(開關(guān)信號),還能當連接上一個合適的測量頭時能直接去控制裝置與最終尺寸進行比較。 美國 ALLEY-BRANDLY公司生產(chǎn)的 8400CNC、8600CNC 數(shù)控系列,適用于車床、銑床和磨床,其 8400CNC最多可控制 6根伺服軸,任 2軸可進行圓弧插補,任3軸可進行螺旋線插補,6 軸直線插補。8600CNC 系列最多能控制 17個坐標,包括 8個參與插補軸,8 個位控制軸及 1個主軸,具有圖形顯示,擴展分支程序,顯示加工時間,高速程序校驗,刀具壽命監(jiān)測等功能。 日本 FANUC公司開發(fā)了 OG高速高性能數(shù)控系統(tǒng),其中 O-GSG適用于平面磨床,可根據(jù)磨削零件不同形狀,有四種不同的磨削方法,具有砂輪軸角度傾斜控制功能,荒磨、粗磨、精磨、無火花磨削一整套磨削循環(huán),砂輪滾壓修整后位置補償功能,修整器相對于被修整輪法線方向控制功能,修整滾輪外緣圓弧半徑補償功能,砂輪形狀圖形顯示功能及磨削參數(shù)顯示等,系統(tǒng)最小設(shè)定單位0.1μm,屬"緊湊"型數(shù)控系統(tǒng),價格較低。 另外還有如德國 ELB公司與大學(xué)聯(lián)合研制的 UNICON系統(tǒng)。日本大隈鐵工所OSP5000G-G,OSP30-NF 等自行開發(fā)的平面和成型磨削數(shù)控系統(tǒng),其 OSP5000G-G最多可控制 9個坐標,其中 6個坐標可聯(lián)動,帶 12英寸彩顯,人機對話編程,自動確定切削系數(shù),可采用軟盤輸入,納入 FMS系統(tǒng),最小脈沖當量、移動當量和檢測當量均為 0.1μm,平磨上還采用了感應(yīng)同步器全閉環(huán)方式。 還有的平磨制造廠雖采用數(shù)控主機廠的系統(tǒng),但自行開發(fā)軟件,使用之更適合平面和成型磨削,如德國 JUNG公司以西門子 SINUMERIK 810 為基礎(chǔ),采用該公司專用軟件,用 JUNG KONTUR 編程語言對砂輪進行成型修整,并有圖形輔助操作功能。日本岡本公司在 FANUC公司數(shù)控系統(tǒng)硬件上,開發(fā)了 OPL語言用于磨削加工,等等。 當今直線電機、動平衡等技術(shù)、工藝的日益發(fā)展應(yīng)有,又大大提高了機床的工效,適宜的測量技術(shù)應(yīng)用對數(shù)控系統(tǒng)的開發(fā)利用,增強機床的電氣自動控制功能如虎添翼。二、國內(nèi)數(shù)控平磨的發(fā)展我國從 80年代開始生產(chǎn)數(shù)控平面磨床,各開發(fā)廠家分別走過了自行研制,與大學(xué)及科研單位合作開發(fā)至直接引進成熟數(shù)控系統(tǒng)的發(fā)展道路。例如:杭州機床廠是一家具有五十年歷史,專業(yè)生產(chǎn)平面磨床的制造廠,它從 80年代中期開始生產(chǎn)數(shù)控平磨,先后開發(fā)生產(chǎn)了 MGK7132臥軸矩臺高精度平磨,MK7130 系列普通數(shù)控平磨,MLK7140 數(shù)控緩進給成型磨,MGK7120、MK7163、MK7150 臥軸矩臺數(shù)控平磨,MKY7760 立軸數(shù)控雙端面磨,MKY7660、MKY7650/101 臥軸數(shù)控雙端面磨,以及 HZ-K1610,HZ-K2010,HZ-050 CNC,HZ-KD2010、HZ-K3015、HZ-K3020、HZ-K4020 等專用數(shù)控龍門式平面與導(dǎo)軌磨床。數(shù)控系統(tǒng)的開發(fā)應(yīng)用,有與大專院校及科研單位合作研制的單板機系統(tǒng),也有自行開發(fā)的以單片機為主機的簡易控制系統(tǒng),及采用數(shù)控主機廠生產(chǎn)的成熟數(shù)控系統(tǒng)等。 其生產(chǎn)的 MGK7120高精度平磨,采用了日本 FANUC公司的 POWER MATE-D雙軸數(shù)控系統(tǒng),控制磨頭進給,最小進給量 0.1μm,具有自動完成磨削循環(huán)功能。MKY7650/101全自動數(shù)控雙端面磨床是與意大利 VIOTTO公司技術(shù)合作產(chǎn)品,采用西門子 SIMATIC S5-115U可編程控制器控制,CRT 顯示,機床的左、右磨頭由二軸直流伺服電機驅(qū)動,機床能進行手動調(diào)整和自動磨削循環(huán)選擇。配有意大利馬爾波斯 E9型測量系統(tǒng),二個測量頭,一個測量砂輪,將砂輪磨損量反饋給控制系統(tǒng),進行砂輪補償;另一個測量頭測量磨削后的工件,并將測量結(jié)果輸入控制系統(tǒng),由伺服電機進行補償進給;左、右磨頭用 VIOTTO光柵作位置測量控制,實現(xiàn)了整機從工件上料到磨削完畢的全閉環(huán)和全自動加工。 HZ-050CNC數(shù)控直線滾動導(dǎo)軌專用磨床,是為上海市科技結(jié)合生產(chǎn)重點工業(yè)項目第三次科技攻關(guān)項目而開發(fā)的專用磨床。既具有平面磨削功能又有成型磨削功能,它采用了美國 A-B公司生產(chǎn)的 8400MP數(shù)控系統(tǒng),機床有 7根數(shù)控軸,X、Y、Z 三根磨頭進給軸和 U、V、W 三根砂輪修整軸由系統(tǒng)直接控制,另一軸Q為臥式砂輪橫向進給(磨削平面用)通過 SLC可編程控制器加 IMC定位模塊,由系統(tǒng) I/O口輸入 8400MP主機,控制其位置,具有在磨削中連續(xù)修整砂輪或間隙式砂輪修整補償進給等自動加工能力。 HZ-KD2010六軸數(shù)控龍門式雙磨頭平面磨床,采用 FANUC-0MC數(shù)控系統(tǒng),用四根 CNC軸分別控制兩個磨頭的橫向和垂直進給,用一根 PMC軸控制周邊磨頭的砂輪修整器金剛筆進給,另一根 PMC軸控制萬能磨頭的分度旋轉(zhuǎn)。充分利用了系統(tǒng)性能,降低生產(chǎn)成本,提高了機床的性價比。 三、我廠數(shù)控磨床的發(fā)展展望 我廠數(shù)控磨床發(fā)展到現(xiàn)在,已經(jīng)具有了相當?shù)膶嵙?,作為主機生產(chǎn)廠,我們的數(shù)控系統(tǒng)應(yīng)有開發(fā),已經(jīng)走過了從完全依賴系統(tǒng)供應(yīng)商到自己初步具有一般開發(fā)能力的過程,但數(shù)控系統(tǒng)的應(yīng)用尚在提高機械傳動鏈性能、替代機械手輪、簡能、加工效率、可靠性等方面都有許多需要提高、突破的問題,有待解決。我認為應(yīng)該對廠目前生產(chǎn)的各類產(chǎn)品的各種結(jié)構(gòu)、產(chǎn)品的使用工藝加以總結(jié),分析其長短得失,產(chǎn)品究競要實現(xiàn)怎樣的自動功能,如何逐步發(fā)展有個規(guī)劃,以利學(xué)習(xí)和工作;重視數(shù)控軟件的開發(fā),有條件引進技術(shù)或外派學(xué)習(xí),跟上發(fā)展潮流,硬件上結(jié)合市場需要,單加工循環(huán)階段,與先進水平相比,還有著許多差距,在機床的精度、自動化功在產(chǎn)品制造中將新技術(shù)、新功能逐項實踐應(yīng)用,以縮小與世界先進水平的差距。隨著數(shù)控系統(tǒng)性能與可靠性的提高,價格更趨合理,使數(shù)控磨床與普通磨床的比價為廣大用戶所接受,同時隨著先進制造與自動化技術(shù)在生產(chǎn)中的要求提高,數(shù)控磨床的使用也將越來越廣泛。數(shù)控平磨及其它磨床將向加工柔性更好的高檔磨加工中心和更加高效的專用數(shù)控磨床方向發(fā)展。我們相信伴隨著計算機、信息技術(shù)革命的深入,數(shù)控磨床在其智能化、系統(tǒng)信息控制等方面,將會有很大的進步。如何緊跟歷史前進的步伐,找到適合于我們自己特點的發(fā)展道路,尋找技術(shù)進步的突破點,是我們工作的重點,因為這是關(guān)系到企業(yè)未來發(fā)展及生存的關(guān)鍵問題。附件 2:外文原文Digital system in the horizontal grinder application of the status quo and development trendModern industrial production, small and large parts for the production of products of the increasing proportion of parts complexity and precision requirements rapidly increase, the traditional general machine tools has become increasingly difficult to meet the requirements of modern production, and a high-precision CNC machine tools, high-efficiency, the use of a machine can complete complex type face processing characteristics, in particular the rapid development of computer technology and the widespread use of digital systems, digital devices from almost all major software functions to achieve, almost to a hardware, thereby making it more flexible processing, functional stronger. Keywords:Manufacturing competition from lower labour costs early, product cost and improve their overall efficiency and quality of competition, to meet customer demands comprehensive, actively develop new products competitive, will face knowledge -- technical -- updated products has become shorter and shorter, an increasing number of small products, and the quality, performance requirements are higher, Meanwhile community to environmental protection, the growing awareness of green manufacturing. Therefore advanced manufacturing technology will be quickly won the competition and survival of the enterprise, the principal means of development. Computer information technology and manufacturing automation technology more closely integrated, flexible production automation as an important foundation for digital machine in the production of machine tools to share more. First, digital Ping finds the status quo and digital systems primaril. First, digital Ping finds the status quo and digital systems primarily. Horizontal grinder compared to the lathe, milling machine, using digital systems later, the special requirements because of its digital systems. In the past decade, with the technical facility, grinder, the grinding wheel for repair, automatic compensation, automatic exchange grinding wheel, and more workstations, such as automatic transmission and Zhuangjia working inoperable realized, and digital technology in the horizontal grinder, gradually spread. In recent Hanover, Tokyo, Chicago, and other large domestic machine tool exhibition, CNC grinder throughout the grinder, for the majority of the exhibits, such as Germany Blohm company ELB companies such famous grinder factories no longer produce ordinary grinder Japanese Forces, Japan, the company also Hing bulk production facility-wide functional ping himself. in the development of high-grade digital ping himself while actively developing, low digital ping himself. German production company a few years ago ELB brilliant series two coordinates facility shaped grinder, the vertical and horizontal axis for digital, vertical for hydraulic control, grinding wheel repair work platform installed in a roller diamonds, the application of broader; SUPER-BRILLIANT series is one-dimensional and shaped grinder Sanzuobiao facility, the beds are manufactured using natural granite, high geometric accuracy, slide away from straight rolling guide, driving without recoiling machinery, thus ensuring a better working surface smoothness; BRILLIANT-FUTURE series of improvements to the above two products, using artificial granite bed was produced by static pressure vertical guide, Chixing belt transmission, vertical and horizontal guide for pre reinforced straight rolling guide, Gunzhusigang transmission, three-axis CNC control AC servo electrical, measuring 0.5 m 16ug image. ELB company has also developed the latest technology grinder contemporary products, and integration with computer and technology-based series of soft skills CAM-MASTER processing modules CAD-MASTER series and COMPACT-MASTER series grinding processing center, a maximum of up to 24 axis control axis, As the full implementation of modular design and manufacture of dedicated grinder cycle shortened ELB company has also developed a variety of highly efficient dedicated grinder, such as SFVG100/2 dedicated grinder, which will tilt Motou, continuous improvements, to ease into, ramps while grinding function with 11 root axis CNC control, as one finds processing center. British and American companies JONES&SHIPMAN A-B company developed A-B8600 digital systems for digital FORMAT5 type ping himself from the facility hydraulic control valves, driven vertical movement can be governor, to the use of horizontal and Motou into Gunzhusigang deputy, Electrical DC servo-driven, intermittent style grinding wheel repair, CRT graphics simulation showed. Also be used with other types of digital systems to meet different user requirements. Currently, the semiconductor master degrees continual increase in the newly introduced system in the appearance of smaller, more compact structure, functions increased distance communications, remote diagnosis, multiple plane networking etc.; Interface to the Windows operating system to increase the mouse, remote operation of vehicles. Fanuc major company this year launched 18I, 16I, 20I, 21I system Siemens is 840D, 810D, 802D are tight structure type system. There are a number of manufacturers such as : Taiwan Precision Machinery Research and Development Center developed PA8000NT series CNC controls on the use of the Windows operating system of NC, and NT immediate multi-processing core, single-section procedures for processing speed 2,000 pieces / s, single-section pre-1000 time to deal with a few pieces, with Aart (pre-adaptation technologies) and the parameters of the best learning function would follow error convergence to zero, the software processing path filter to reduce machining process generated by the acceleration changes excessive mechanical resonance, thereby improving surface roughness; with the use of servo flexible, with +, -10V analogy servo interface It also provides international standards SERCOS digital servo communications interface design Tixingtu ;PLC procedures, structure expressions, functional pieces, instructions code, flowcharts, five grammar, facilitate design, communication and maintenance; long-range communications with the computer, instant remote maintenance functions; control can be extended to a maximum axle and spindle axis 64. I/O points which can be expanded to 792/528 point, the introduction of Pentium processors, high-speed Plc processing speed to 25K. Apart from the world famous Siemens, Fanuc digital systems, such as professional development and production of the plant has been applied to many horizontal or shaped grinding system, a number of production plants Ping finds itself actively developed application in the digital grinder system. Notably : Siemens SINUMERIK 840D of the system, the system has more than 20 roots servo axis, the coordinates for the trip control, manual data entry or imported through external computer, remote diagnosis may reduce the grinding wheel diameter change itinerary, grinding wheel repair of automatic compensation Gunzhusigang gap error compensation. Siemens 3G system is specifically for grinding and processing development, for both dialogue with the presentation devices operate in axis tilt, can also be straight and arc widely in grinding, recurring operational cycle, such as the main axis swing, and use external signal interruption implementation procedures, grinding wheel cut, grinding wheel repair, and other special functions for the preparation of a fixed cycle procedures. Not only can use its external measurement devices (switches signal), but when connected to a suitable time to first measurement and control devices directly to the ultimate size comparison.American companies ALLEY-BRANDLY production 8400CNC, 8600CNC digital series apply lathe, milling machine and grinder, 8400CNC up to 6 roots servo axis control, the Section 2 axle may drain, the three axis may helix spaced, six axle straight drain. 8600CNC series of coordinates to control 17, including eight in the drain axle, eight spaces control axle and one allegation that a graphic shown that the expansion of branch procedures that processing time, high-speed access procedures, cutlery life monitoring function. Japanese companies developed FANUC OG high-speed high-performance digital systems, which O-GSG applicable to horizontal grinder, the grinding parts under different shapes, four different methods of grinding, a grinding wheel axle angle control function shortage grinding, Cumo, Jingmo, no spark grinding a grinding cycle of grinding wheel flow position after finishing compensation function, Compared to repair vehicles were repaired round normal line direction control functions roller outer arc radius compensation for the rehabilitation of the functional, grinding wheel shape graphics and grinding parameters show that the functional, system smallest unit set 0.1 16ug m, a "tight" - type digital systems, lower prices. There are also companies such as Germany and the University jointly developed by ELB UNICON system. Japanese big cove ironworker OSP5000G-G,OSP30-NF such as self-development and shaped grinding digital print system, the maximum control OSP5000G-G nine coordinates, which can be linked six coordinates, a 12-inch hall, interactive programming, automatic identification of cutting factor used diskettes imported, into automated systems, the smallest pulse equivalent, the mobile equivalent and testing equivalent 16ug are 0.1 m, Ping himself also used simultaneously by the entire loop detectors. Although there is the ping himself factory using digital Zhujichang system, but self-development of software, use it more suitable for horizontal and shaped grinding, such as German company Siemens SINUMERIK 810 Jung based, the company specialized software used by Jung Kontur programming language for a shaped grinding wheel repair, and graphics supporting operational functions. Japan sincerely companies in Fanuc digital systems hardware companies, the OPL development language for grinding processing, and so on. The linear electrical, balance, technology, the growing due process, and greatly enhance the efficacy of machine tools, the application of appropriate measurement techniques for the development and use of digital systems, machine tools and electrical automatic control functions to redouble their might. Second, the development of domestic digital Ping finds. Since the start of production digital horizontal grinder 1980s, the development of the manufacturers have developed separately, the development of cooperation with universities and research units direct to introduce mature digital systems development. For example : Hangzhou Machine Tool Plant is a history of 50 years of professional graphic grinder of factory production, which began production in the mid-1980s from digital ping himself, has developed a production MGK7132 straight axle rule Taiwan high-precision ping himself, MK7130 series ordinary digital ping himself, MLK7140 digital relief to shape himself into, MGK7120, MK7163, MK7150 straight axle rule Taiwan digital ping himself, MKY7760 vertical shaft digital double carry noodles himself, MKY7660, MKY7650/101 straight axle digital double carry noodles himself, and HZ-K1610,HZ-K2010,HZ-050 CNC,HZ-KD2010, HZ-K3015, HZ-K3020, such as dedicated digital Dragon Gate Type HZ-K4020 horizontal grinder and guide. The development and application of digital systems, developed in cooperation with universities and scientific research units in the Shanbanji system, but also for self-development to the mainframe Chanpianji the simple control system, and the use of digital Zhujichang mature digital production system. Ping finds its production MGK7120 high-precision, the company introduced Japan Fanuc MATE-D purchased digital recording system to control Motou chin, chin to the smallest volume 0.1 16ug m, a complete automatic grinding cycle functions. MKY7650/101 carry noodles grinder is fully automatic digital double technical cooperation with the Italian company Viotto products using Siemens Simatic S5-115U programmable controller control CRT display, machine tools left, right Motou driven by the two axis DC servo electrical, machine tools capable of manual and automatic grinding cycle of adjustment options. Equipped with Italian Maerbosi E9-measurement systems, the first two measurements, a measurement grinding wheel, grinding wheel wear and tear of feedback to the control system, Abrasive Wheels compensation; Another measure after her first measurements grinding, and measurements of the control system into the servo compensation for electrical; Left and right Motou used for position measurement Viotto raster control, Having achieved a whole sets from the expected completion of the entire loop grinding and fully automatic processing. HZ-050CNC digital linear rolling guide dedicated grinder is the Shanghai Science and Technology for the production of key industrial projects in the third research and development project dedicated grinder. Both functional and shaped grinding flat grinding function, and it has adopted the U.S. company A-B 8400MP digital production system, a seven-kan digital axis machine tools, X, Y, Z into three roots Motou to axle and U, V, W 3 root grinding wheel repair axle direct control by the system, Another Q for the horizontal grinding wheel horizontal axis into the (one-dimensional with grinding) through SLC programmable controller plus wife positioning module, the mainframe system I/O imported 8400MP control its position, with continuous improvements in the grinding, grinding wheel or gap-type grinding wheel to repair such automatic processing into compensation. HZ-KD2010 six-axle double-Motou Dragon Gate digital graphic grinder, using FANUC-0MC digital systems, using four roots CNC axis control two separate horizontal and vertical into Motou to use a PMC peripheral Motou control of the grinding wheel axle repair vehicles lords-chin to the other roots PMC axis control Almighty Motou sub-degree rotation. Take full advantage of the system performance, reduce production costs and enhance the Xingjiabi of machine tools. Third, I look at the development of digital grinder.I plant digital grinder development to the present, already has considerable strength as mainframe production plant, our digital systems have developed have come from totally dependent on the system vendor to its initial capacity of a general development process, but the application of digital systems is increasing mechanical transmission chain performance, alternative mechanical hand round, simpl