心臟線軌跡直擺組合凸輪機(jī)構(gòu)設(shè)計(jì)

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目  錄

1 緒論 1
1.1直、擺組合凸輪機(jī)構(gòu)的研究意義 1
1.2凸輪機(jī)構(gòu)以及組合機(jī)構(gòu)的研究和發(fā)展?fàn)顩r 2
1.3直、擺組合凸輪機(jī)構(gòu)的研究方法 2
1.3.1直、擺組合凸輪機(jī)構(gòu)的設(shè)計(jì) 2
1.3.2本課題的主要研究方法 2
2 直動(dòng)從動(dòng)機(jī)凸輪和擺動(dòng)從動(dòng)件凸輪的設(shè)計(jì) 4
2.1 直、擺組合凸輪機(jī)構(gòu)設(shè)計(jì)基本思想 4
2.2直、擺組合凸輪機(jī)構(gòu)設(shè)計(jì)步驟 5
2.2.1求取坐標(biāo)點(diǎn) 5
2.2.2確定機(jī)構(gòu)初始位置參數(shù) 6
2.2.3 確定頂桿位移與擺桿轉(zhuǎn)角的變化規(guī)律 7
2.2.4 凸輪廓形設(shè)計(jì) 7
2.2.5直動(dòng)從動(dòng)件凸輪的頂桿長度及安裝滯后角 11
2.3直動(dòng)凸輪和擺動(dòng)凸輪的實(shí)體設(shè)計(jì) 12
3 機(jī)構(gòu)的實(shí)體設(shè)計(jì) 14
3.1 機(jī)構(gòu)的實(shí)體結(jié)構(gòu) 14
3.2 支架的設(shè)計(jì) 15
3.3 直動(dòng)導(dǎo)軌的設(shè)計(jì) 16
3.4直動(dòng)桿的設(shè)計(jì) 16
3.5擺動(dòng)桿的設(shè)計(jì) 17
3.6軸系零部件的設(shè)計(jì) 17
3.6.1 擬定軸上零件的裝配方案 18
3.6.2 確定軸的各段直徑和長度 18
3.6.3軸上零件的周向定位 18
4 機(jī)構(gòu)的運(yùn)動(dòng)仿真 20
參考文獻(xiàn) 21
致謝 22

摘 要

本課題研究一直擺凸輪組合機(jī)構(gòu)，該機(jī)構(gòu)通過直動(dòng)從動(dòng)件凸輪機(jī)構(gòu)與擺動(dòng)從動(dòng)件凸輪機(jī)構(gòu)組成聯(lián)動(dòng)凸輪機(jī)構(gòu)，能夠?qū)⒅鲃?dòng)件的轉(zhuǎn)動(dòng)轉(zhuǎn)化為從動(dòng)件上某點(diǎn)沿預(yù)期的曲線軌跡并以預(yù)期的運(yùn)動(dòng)規(guī)律運(yùn)動(dòng)。該機(jī)構(gòu)所能實(shí)現(xiàn)的軌跡多種多樣，如正弦波曲線、內(nèi)擺線、帶停點(diǎn)曲線、人頭像及金魚圖像等等。本課題所研究的直擺凸輪組合機(jī)構(gòu)要實(shí)現(xiàn)的是一心臟線軌跡。
    本課題首先通過理論分析，建立出了直、擺組合凸輪機(jī)構(gòu)的設(shè)計(jì)公式，得出該機(jī)構(gòu)各構(gòu)件位置、大小及形狀尺寸、凸輪實(shí)際廓線、理論廓線等。然后在此基礎(chǔ)上對(duì)該機(jī)構(gòu)的每一構(gòu)件進(jìn)行了實(shí)體設(shè)計(jì)，比如軸，導(dǎo)軌，支架等等的設(shè)計(jì)，并且對(duì)所設(shè)計(jì)的構(gòu)件實(shí)體進(jìn)行了裝配組合。最后，為了驗(yàn)證設(shè)計(jì)的正確性，本課題還在Proe下對(duì)實(shí)體進(jìn)行了運(yùn)動(dòng)仿真。

關(guān)鍵詞：凸輪設(shè)計(jì)      組合機(jī)構(gòu)      心臟線軌跡         

THE DESIGN OF Z.B COMBINATORY CAM
MECHANISM TO GAIN ELIIPSE LOCUS

Abstract：The research portfolio has been put cam body parts through the straight moving follower cam cam with oscillating follower cam linkage institutions, able to take the initiative of the rotating pieces into a point on the follower along the expected curve trajectory and the expected movement of movements. The agency can track the realization of a wide range, such as the sine curve, with the cycloid, with stopping points, curves, images of goldfish heads and so on. Studied the subject before the straight cam combination mechanism is to achieve a heart-line trajectory.
First of all, this issue through theoretical analysis, a straight, before the design of cam combination formula, the components come to the location, size and shape of the size of the actual cam profile and theoretical profile and so on. And then on the basis of each component of the institution to carry out the physical design, such as shafts, rails, frame design, etc., and components designed for the assembly combination of entities. Finally, in order to verify the correctness of the design, the issue is still under Proe motion simulation entities.

Key words: Cam Design     Combination Mechanism      Heart-line trajectory