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摘 要
機(jī)械制造技術(shù)基礎(chǔ)課程設(shè)計(jì)是我們?cè)趯W(xué)完了大學(xué)的全部基礎(chǔ)課、專(zhuān)業(yè)基礎(chǔ)課以及專(zhuān)業(yè)課后進(jìn)行的。這是我們?cè)谶M(jìn)行畢業(yè)設(shè)計(jì)之前對(duì)所學(xué)的各科課程一次深入的綜合性總復(fù)習(xí),也是一次理論聯(lián)系實(shí)際的訓(xùn)練。因此,他在我們的大學(xué)四年生活中占有重要的地位。
我這次的課題是鏜銷(xiāo)孔活塞零件專(zhuān)用夾具的設(shè)計(jì),有活塞零件圖、毛坯圖、夾具裝配圖、夾具零件圖各一張以及非標(biāo)零件圖五張,機(jī)械加工工藝過(guò)程卡片和與所設(shè)計(jì)夾具對(duì)應(yīng)那道工序的工序卡若干張。首先我們要熟悉零件,題目所給的零件是汽車(chē)活塞。了解了活塞的作用,接下來(lái)根據(jù)零件的性質(zhì)和零件圖上各端面的粗糙度確定毛坯的尺寸和機(jī)械加工余量。然后我們?cè)俑鶕?jù)定位基準(zhǔn)先確定精基準(zhǔn),后確定粗基準(zhǔn),最后擬定活塞的工藝路線(xiàn)圖,制定該工件的夾緊方案,畫(huà)出夾具裝配圖。
就我個(gè)人而言,我希望通過(guò)這次課程設(shè)計(jì)對(duì)自己未來(lái)將從事的工作進(jìn)一步適應(yīng)性的訓(xùn)練,希望自己在設(shè)計(jì)中能鍛煉自己的分析問(wèn)題、解決問(wèn)題、查資料的能力 ,為以后的工作打下良好的基礎(chǔ)。
由于能力有限,設(shè)計(jì)尚有很多不足之處,希望各位老師給予指導(dǎo)。
關(guān)鍵詞:夾具;活塞;零件圖;
I
Abstract
Machinofacture technology curriculum design is that we mimic all basic courses , technology basic course and major part having completed university being in progress after the specialized course. This is that we always review before the graduation practice being in progress to what be learned every thorough comprehensiveness of course,be also that a theory contacts actual training , it occupies important position therefore, in our university for four years life.
Abstract with the pin hole boring piston parts special fixture design, piston parts diagram, blank map,jig assembly drawing, fixture parts each piece and non-standard parts of figure five. Machining process with the card and the corresponding fixture designed by the procedures of the process of several card. First of all, we must familiar with the parts, subject to the parts is piston understanding of the role, followed in accordance with the nature of parts and components in the face of the map on the roughness of rough determine the size and mechanical Jiagongyuliang. According to another location and then we set the benchmark fine first base, established after the benchmark crude, piston finalizing the road map process, the enactment of the workpiece clamping programme, to draw fixture assembly.
For me personally, I hope that through the curriculum design of their future will be further engaged in the work of adaptive training, in the hope that their design can exercise their own analysis, problem solving, the ability to search information, the work laid for the future A good foundation.
Because of limited capacity, there are a lot of design deficiencies, I hope that teachers give guidance.
Key words:fixture;piston;part drawing;
目 錄
年 月 日 II
摘 要 III
Abstract IV
1緒 論 1
1.1 本課題的研究?jī)?nèi)容和意義 1
1.2 國(guó)內(nèi)外的發(fā)展概況 1
1.3 本課題應(yīng)達(dá)到的要求 1
2零件的分析 2
2.1 活塞的作用 2
2.2 活塞的結(jié)構(gòu)組成 2
2.3 活塞的主要技術(shù)條件分析 3
3 零件的工藝規(guī)程設(shè)計(jì) 4
3.1確定零件的生產(chǎn)綱領(lǐng) 4
3.2 確定毛坯的材料和制造形式 4
3.2.1 毛坯的材料選擇 4
3.2.2 毛坯的制造方法 4
3.3 定位基準(zhǔn)的選擇 4
3.3.1 粗基準(zhǔn)的選擇 5
3.3.2 精基準(zhǔn)的選擇 5
3.4 制定工藝路線(xiàn) 6
3.5 活塞毛坯尺寸、加工余量、工序尺寸的確定 8
3.5.1 活塞毛坯尺寸的確定 8
3.6確定切削用量及工時(shí)定額 9
3.6.5 止口的切削用量 16
4.1 機(jī)床夾具的作用及組成 18
4.2 機(jī)床夾具設(shè)計(jì)過(guò)程 18
4.3 夾具的初步設(shè)計(jì)方案 18
4.4定位方案設(shè)計(jì) 19
4.4.1 定位元件選擇 19
4.4.2 定位誤差的分析與計(jì)算 19
4.4.3 液壓缸的設(shè)計(jì) 20
4.5夾緊方案設(shè)計(jì) 21
4.5.1 夾緊元件的選取 21
4.5.2 夾緊力的分析與計(jì)算 22
4.5.3 原動(dòng)力計(jì)算 22
5 結(jié)論與展望 24
5.1 結(jié)論 24
5.2 不足之處及未來(lái)展望 24
致 謝 25
參考文獻(xiàn) 26
1緒 論
1.1 本課題的研究?jī)?nèi)容和意義
工藝工裝畢業(yè)設(shè)計(jì)是在機(jī)械制造工藝學(xué)及機(jī)床夾具等課程的基礎(chǔ)上,進(jìn)行生產(chǎn)實(shí)習(xí)基礎(chǔ)上進(jìn)行的一個(gè)重要環(huán)節(jié),它要求學(xué)生全面地綜合運(yùn)用本課程及有關(guān)選修課程的理論和實(shí)踐知識(shí),進(jìn)行零件加工工藝規(guī)程設(shè)計(jì)和機(jī)床夾具設(shè)計(jì)。