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8字無碳小車的設(shè)計與制作畢業(yè)設(shè)計說明書-wenkub

2022-12-04 16:55:42 本頁面
 

【正文】 m, travel mechanism to achieve differential, selects the adjustment nut screw finetuning mechanism. The steering mechanism takes advantage of the selfaligning bearings, joint bearings. Technical design phase we to plan through theoretical analysis, the mathematical model is established using MATLAB, respectively, the rule of energy consumption analysis, kinematics analysis, dynamics analysis and sensitivity analysis. To get the specific parameters of the car and the motion law. Then using PROE software on the car movement simulation entity modeling and car parts. Based on solid modeling for each part has carried on the detailed design, considering the parts material performance, processing technology, cost and other factors. Used car parts are mostly is standard parts, can buy, at the same time, in addition to the part machining precision demanding part need special processing, most of the parts can be covered by the manual processing. The plastic can be used. And because the car by the force is not large, so large with glue, which can simplify the parts and ponents assembly. Debugging process will test by finetuning ways such as changing the parameters of the car, on the basis of the experiment verify the car motion law, determine the car at the same time the optimal parameters. Key words: carbonfree car parametric design sensitivity analysis software aided design fine tuning mechanism 目錄 摘要 ...............................................................2 一論述 .............................................................7 設(shè)計布置方案 ................................................7 功能設(shè)計要求 ................................................7 整體方案設(shè)計 ................................................8 小車的設(shè)計方法 ..............................................9 二 方案設(shè)計 .......................................................10 車架 .......................................................13 原動機構(gòu) ...................................................13 傳動機構(gòu) ...................................................13 轉(zhuǎn)向機構(gòu) ...................................................14 行走機構(gòu) ...................................................17 微調(diào)機構(gòu) ...................................................18 三 技術(shù)設(shè)計 .......................................................20 建立數(shù)學(xué)模型及參數(shù)確定 .....................................20 運動學(xué)分析模型 .......................................24 動力學(xué)分析模型 .......................................28 整體設(shè)計 ...................................................30 整體裝配圖 ...........................................30 設(shè)計過程 .............................................31 小車的零件設(shè)計 .......................................40 四 小車調(diào)試及改進 .................................................41 小車調(diào)試方法 ...............................................41 小車改進方法 ...............................................41 五 評價分析 .......................................................42 小車優(yōu)缺點 .................................................42 自動行走比賽時的前行距離估計 ...............................42 改進方向 ...................................................42 結(jié)論 ..............................................................43 參 考文獻 ..........................................................43 附錄 A .............................................................43 致 謝 .............................................................43 一論述 小車功能設(shè)計要求 無碳小車走“ 8”字形越障的設(shè)計 圖 1 無碳小車示意圖 以重力勢能驅(qū)動的具有方向控制功能的自行小車。見下圖二: 圖二小車繞行所用乒乓球臺及障礙設(shè)置圖 給定重力勢能為 4焦耳(取 g=10m/s2),用質(zhì)量為 1Kg 的 重塊( ? 50 65 mm,普通碳鋼)鉛垂下降來獲得,落差 400177。要求滿足:①小車上面要裝載一件外尺寸為 ? 60 20 mm 的實心圓柱型鋼制質(zhì)量塊作為載荷,其質(zhì)量應(yīng)不小于 400 克;在小車行走過程中,載荷不可掉落。為了得到最優(yōu)的設(shè)計方案,現(xiàn)在采用擴展性思維設(shè)計每一個模塊,對每個模塊分塊設(shè)計,在每個模塊中尋求多種可行的方案和構(gòu)思,并在這些設(shè)計方案和構(gòu)思中選擇最優(yōu)方案。設(shè)計能力項要求對作對產(chǎn)品的設(shè)計具有創(chuàng)新性和規(guī)范性。并且要有開闊的思路,創(chuàng)新的精神,勇于創(chuàng)新,在創(chuàng)新中發(fā)展。下面是我們設(shè)計小車的流程 圖三 通過在每個模塊的反復(fù)推敲思考,通過否定一些加工難度大或 者經(jīng)濟性,實用性等原因,選取最佳的設(shè)計思路。下面為我設(shè)計過程中的設(shè)計圖框(圖四) 圖四 在選擇方案時應(yīng)綜合考慮小車需要實現(xiàn)的功能、材料、加工、制造的難易程度、 制造成本等各方面因素,同時盡量避免直接決策,從客觀的事實出發(fā),減少主觀能動性,一切以原理和實際情況為依據(jù),減少決策時的主觀因素,使得選擇的方案能夠綜合最優(yōu)。我們設(shè)想使用飛輪作為儲能機構(gòu),小車對原動機構(gòu)應(yīng)有這些要求。 ,場地對輪子的摩擦摩擦可能不一樣,在不同的場地小車是需要的驅(qū)動力也不一樣。所以我選用了錐形的繞線輪原動機構(gòu),這樣就可以調(diào)整驅(qū)動力。最后綜合各
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