薄板鋁制零件三維數(shù)字化建模及加工工藝技術(shù)研究(本科畢業(yè)論文設(shè)計(jì)).doc
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薄板鋁制零件三維數(shù)字化建模及加工工藝技術(shù)研究(本科畢業(yè)論文設(shè)計(jì)),摘要由于鋁合金諸多的優(yōu)良性能,由這種材料制成的薄壁零件被廣泛應(yīng)用在航空航天、汽車制造和電子通信等上。這篇論文介紹了基于ug軟件的某種通信設(shè)備后板和上蓋的三維數(shù)字化建模的一般過程,同時也較詳細(xì)研究了后板的數(shù)控編程的過程。對于數(shù)控加工中鋁制零件容易變形的缺陷,...
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薄板鋁制零件三維數(shù)字化建模及加工工藝技術(shù)研究(本科畢業(yè)論文設(shè)計(jì))
摘 要
由于鋁合金諸多的優(yōu)良性能,由這種材料制成的薄壁零件被廣泛應(yīng)用在航空航天、汽車制造和電子通信等上。這篇論文介紹了基于UG軟件的某種通信設(shè)備后板和上蓋的三維數(shù)字化建模的一般過程,同時也較詳細(xì)研究了后板的數(shù)控編程的過程。對于數(shù)控加工中鋁制零件容易變形的缺陷,主要采用以下的措施進(jìn)行控制:首先,在選擇刀具時避免選擇波浪形粗加工刀具,因波浪形粗加工刀具加工薄壁盒體后,往往會造成應(yīng)力集中的現(xiàn)象。其次,注意合理安排加工工序,銑削方式上在粗加工中采用逆銑,精加工采用順銑,以減少出現(xiàn)喇叭口概率。在裝夾上盡可能地壓在盒體的長邊方向,盡量避免因裝夾帶來的零件變形。最后,背吃刀量和進(jìn)給速度都選擇了較小值,以減少切削力。論文的最后部分進(jìn)行了數(shù)控加工仿真,提出了實(shí)際加工的操作步驟和注意點(diǎn)。
關(guān)鍵詞:三維數(shù)字化建模,數(shù)控編程,刀具,背吃刀量
ABSTRACT
Becase of aluminium alloy’s so many great properties,thin—wall parts made by this kind of materia has been widely used in the air of aeronautics and astronautics , automobile making and electron communicate etc.In this paper, the general process of 3D Digitized Modeling based on UG NX for some kind of communication equipment ’s back board and top head is intorduced ,it also give a further research on the part’s numerical control programming. With regard to the aluminium alloy can easily become deformed in the processing,the following control method is adopted. Firstly,wave cutter can’t be used in the rough process,because this kinds of cutter usually bring about the phenomenon of strain concentration.Secondly, arrangement of working procedure should be reasonable, rough milling adopts down milling and finish milling uses up milling, Occurrence probability of bell mouth can be decreased by this method. In the clamping it can be better fix the long flank to reduce the deformation.finally,the back infeed and the feed rate should choose small value to reduce cutting force. At last of the paper focuses on NC machining simulation and provides points for attention in NC milling .
Keywords: 3D Digitized Modeling, numerical control programming,cutter, back infeed
目錄
摘 要 III
ABSTRACT IV
1 緒論 1
1.1 課題來源及意義 1
1.2國內(nèi)外研究現(xiàn)狀 1
1.2.1 CAD/CAM技術(shù) 1
1.2.2 CAD/CAE/CAM工作流程 1
1.2.3 CAD/CAM的新發(fā)展 2
1.3課題的主要研究內(nèi)容 3
2 盒體零件的三維數(shù)字化建模舉例 3
2.1建模軟件的選擇 3
2.1.1在我國CAD市場上比較流行的CAD軟件比較 4
2.1.2 CAD軟件的選擇原則 4
2.2 某種通信設(shè)備后板建模過程 5
2.2.1建模的任務(wù) 5
2.2.2建模的過程 6
2.3 某種通信設(shè)備上蓋建模過程 11
2.3.1建模的任務(wù) 11
2.3.2建模的過程 11
3 某種通信設(shè)備后板的銑削加工編程 16
3.1 零件工藝性分析 16
3.1.1 零件的結(jié)構(gòu)特點(diǎn)及其工藝特點(diǎn) 16
3.1.2 零件工序的主要尺寸和技術(shù)要求 16
3.2零件工藝方案的確定 17
3.2.1零件加工工藝路線的制定 17
3.2.2 加工刀具的選用 17
3.2.3零件的加工工藝方案 18
3.3、后板的銑削加工 19
3.3.1后板CAM模型的建立 19
3.3.2 零件加工基準(zhǔn)的選擇 19
3.3.3數(shù)控程序加工路線的設(shè)計(jì) 19
3.3.4 零件數(shù)控程序走刀路徑的設(shè)計(jì) 24
3.3.5加工仿真 31
3.3.6 后處理輸出NC程序 32
4、零件加工程序的實(shí)際驗(yàn)證 34
4.1 數(shù)控加工準(zhǔn)備 34
4.2數(shù)控程序的驗(yàn)證 34
5、結(jié)論 35
主要參考文獻(xiàn) 37
摘 要
由于鋁合金諸多的優(yōu)良性能,由這種材料制成的薄壁零件被廣泛應(yīng)用在航空航天、汽車制造和電子通信等上。這篇論文介紹了基于UG軟件的某種通信設(shè)備后板和上蓋的三維數(shù)字化建模的一般過程,同時也較詳細(xì)研究了后板的數(shù)控編程的過程。對于數(shù)控加工中鋁制零件容易變形的缺陷,主要采用以下的措施進(jìn)行控制:首先,在選擇刀具時避免選擇波浪形粗加工刀具,因波浪形粗加工刀具加工薄壁盒體后,往往會造成應(yīng)力集中的現(xiàn)象。其次,注意合理安排加工工序,銑削方式上在粗加工中采用逆銑,精加工采用順銑,以減少出現(xiàn)喇叭口概率。在裝夾上盡可能地壓在盒體的長邊方向,盡量避免因裝夾帶來的零件變形。最后,背吃刀量和進(jìn)給速度都選擇了較小值,以減少切削力。論文的最后部分進(jìn)行了數(shù)控加工仿真,提出了實(shí)際加工的操作步驟和注意點(diǎn)。
關(guān)鍵詞:三維數(shù)字化建模,數(shù)控編程,刀具,背吃刀量
ABSTRACT
Becase of aluminium alloy’s so many great properties,thin—wall parts made by this kind of materia has been widely used in the air of aeronautics and astronautics , automobile making and electron communicate etc.In this paper, the general process of 3D Digitized Modeling based on UG NX for some kind of communication equipment ’s back board and top head is intorduced ,it also give a further research on the part’s numerical control programming. With regard to the aluminium alloy can easily become deformed in the processing,the following control method is adopted. Firstly,wave cutter can’t be used in the rough process,because this kinds of cutter usually bring about the phenomenon of strain concentration.Secondly, arrangement of working procedure should be reasonable, rough milling adopts down milling and finish milling uses up milling, Occurrence probability of bell mouth can be decreased by this method. In the clamping it can be better fix the long flank to reduce the deformation.finally,the back infeed and the feed rate should choose small value to reduce cutting force. At last of the paper focuses on NC machining simulation and provides points for attention in NC milling .
Keywords: 3D Digitized Modeling, numerical control programming,cutter, back infeed
目錄
摘 要 III
ABSTRACT IV
1 緒論 1
1.1 課題來源及意義 1
1.2國內(nèi)外研究現(xiàn)狀 1
1.2.1 CAD/CAM技術(shù) 1
1.2.2 CAD/CAE/CAM工作流程 1
1.2.3 CAD/CAM的新發(fā)展 2
1.3課題的主要研究內(nèi)容 3
2 盒體零件的三維數(shù)字化建模舉例 3
2.1建模軟件的選擇 3
2.1.1在我國CAD市場上比較流行的CAD軟件比較 4
2.1.2 CAD軟件的選擇原則 4
2.2 某種通信設(shè)備后板建模過程 5
2.2.1建模的任務(wù) 5
2.2.2建模的過程 6
2.3 某種通信設(shè)備上蓋建模過程 11
2.3.1建模的任務(wù) 11
2.3.2建模的過程 11
3 某種通信設(shè)備后板的銑削加工編程 16
3.1 零件工藝性分析 16
3.1.1 零件的結(jié)構(gòu)特點(diǎn)及其工藝特點(diǎn) 16
3.1.2 零件工序的主要尺寸和技術(shù)要求 16
3.2零件工藝方案的確定 17
3.2.1零件加工工藝路線的制定 17
3.2.2 加工刀具的選用 17
3.2.3零件的加工工藝方案 18
3.3、后板的銑削加工 19
3.3.1后板CAM模型的建立 19
3.3.2 零件加工基準(zhǔn)的選擇 19
3.3.3數(shù)控程序加工路線的設(shè)計(jì) 19
3.3.4 零件數(shù)控程序走刀路徑的設(shè)計(jì) 24
3.3.5加工仿真 31
3.3.6 后處理輸出NC程序 32
4、零件加工程序的實(shí)際驗(yàn)證 34
4.1 數(shù)控加工準(zhǔn)備 34
4.2數(shù)控程序的驗(yàn)證 34
5、結(jié)論 35
主要參考文獻(xiàn) 37