外文翻譯--三段式圓弧凸輪設(shè)計(jì)分析譯文-資料下載頁
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【導(dǎo)讀】本文對(duì)三段式圓弧凸輪輪廓進(jìn)行了理論性描述。提出了凸輪輪廓的解析式并為以。之為尺寸參數(shù)討論。例舉了一些數(shù)值樣例來證明本理論描述的正確性并表明恰當(dāng)?shù)娜６问綀A弧凸輪在工程上是可行的。凸輪是一種通過與從動(dòng)件的直接表面接觸來傳輸預(yù)定運(yùn)動(dòng)的機(jī)構(gòu)。一般地，從運(yùn)動(dòng)學(xué)[1,2]:來看，凸輪機(jī)構(gòu)由三部分組成：凸輪（主動(dòng)件）；從動(dòng)件；凸輪機(jī)構(gòu)廣泛用于現(xiàn)代機(jī)械中，特別是一些自動(dòng)化機(jī)械裝備,內(nèi)燃機(jī)與控制系。凸輪機(jī)構(gòu)簡(jiǎn)單而便宜，運(yùn)動(dòng)部件少而且結(jié)構(gòu)緊湊。形曲線[2,5]以及它們的復(fù)合曲線[1,2,6,7]。本文主要致力于基于圓弧輪廓的凸輪，即所謂圓弧凸輪。加工可以通過利用初等幾何學(xué)準(zhǔn)確地達(dá)到。這種凸輪的缺點(diǎn)是：凸輪輪廓上不同半徑圓弧交接處會(huì)產(chǎn)生加速度的劇變。最近，出于設(shè)計(jì)目的，有人開始用描述性視圖給予圓弧凸輪注意。，最大舉升位移1h。定于從動(dòng)件軸上。與機(jī)架OXY坐標(biāo)系相關(guān)的笛卡爾坐標(biāo)，機(jī)架原點(diǎn)就是凸輪轉(zhuǎn)軸。半徑r的圓C4滿足
【正文】 本文提出了有關(guān) 三段式圓弧凸輪 輪廓基本設(shè)計(jì)的解析方法。從該法我們推導(dǎo)出了１個(gè)設(shè)計(jì)算法，從而可以高效地解決該方向 一些設(shè)計(jì)問題。另外還舉出了一些數(shù)字樣例以展示與討論三段式圓弧凸輪的多重設(shè)計(jì)以及工程可行性問題。 畢業(yè)設(shè)計(jì) 翻譯文 9 ７．參考文獻(xiàn) [1] . Chen, Mechanics and Design of Cam Mechanisms, Pergamon Press, New York, 1982. [2] J. Angeles, . LopezCajun, Optimization of Cam Mechanisms, Kluwer Academic Publishers, Dordrecht, p. 1991. [3] R. Norton, Cam and cams follower (Chapter 7), in: . Erdman (Ed.), Modern Kinematics: Developments in the Last Forty Years, WileyInterscience, New York, 1993. [4] . Chen, A survey of the state of the art of cam system dynamics, Mechanism and Machine Theory 12(1977) 201– 224. [5] G. Scotto Lavina, in: Sistema (Ed.), Applicazioni di Meccanica Applicata alle Macchine, Roma, 1971. [6] . Rothbar, Cams Design, Dynamics and Accuracy, Wiley, New York, 1956. [7] . Shigley, . Uicker, Theory of Machine and Mechanisms, McGrawHill, New York, 1981. [8] . Magnani, G. Ruggieri, Meccanismi per Macchine Automatiche, UTET, Torino, 1986. [9] . Chironis, Mechanisms and Mechanical Devices Sourcebook, McGrawHill, New York, 1991. [10] . Krasnikov, Dynamics of cam mechanisms with cams countered by segments of circles, in: Proceedings of the International Conference on Mechanical Transmissions and Mechanisms, Tainjin, 1997, pp. 237– 238. [11] J. Oderfeld, A. Pogorzelski, On designing plane cam mechanisms, in: Proceedings of the Eighth World Congress on the Theory of Machines and Mechanisms, Prague, vol. 3, 1991, pp. 703– 705. [12] C. Lanni, M. Ceccarelli, . Carvhalo, An analytical design for two circulararc cams, in: Proceedings of the Fourth Iberoamerican Congress on Mechanical Engineering, Santiago de Chile, vol. 2, 1999. 924 C. Lanni et al. / Mechanism and Machine Theory 37 (2020) 915– 924
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