本文選題：拋光磨頭 + 圓柱端面凸輪��； 參考：《哈爾濱理工大學》2011年碩士論文

【摘要】：拋光磨頭是瓷質(zhì)磚拋光機上的核心部件,其性能優(yōu)劣直接影響到拋光磚的加工質(zhì)量和生產(chǎn)效率。隨著我國房地產(chǎn)業(yè)的迅猛發(fā)展、國民生活水平的提高以及國際化建材市場競爭的日益激烈,無論是對拋光磚的產(chǎn)量還是質(zhì)量都提出了更高的要求。所有的這一切都需要提高國產(chǎn)拋光機的質(zhì)量才能得以實現(xiàn)。目前,國產(chǎn)拋光機設備主要存在著拋光磨削加工過程中碎磚現(xiàn)象嚴重,加工噪音大等缺陷,尤其是拋光磨頭更存在凸輪局部磨損現(xiàn)象嚴重,擺桿運動精度低以及返修率高等問題。如何提高拋光機,尤其是拋光磨頭的工作性能,提高國產(chǎn)拋光機設備以及拋光磚的國際競爭力已經(jīng)是擺在我們面前迫切需要解決的問題。 在實際調(diào)研和查閱大量的相關(guān)資料的基礎上,本文以瓷質(zhì)磚拋光機的拋光磨頭為研究對象,對其凸輪擺桿機構(gòu)展開重點研究分析,針對其端面圓柱凸輪輪廓的研究采用將圓柱凸輪展開成平面凸輪的方法,利用坐標變換的原理,計算出其1/6段理論輪廓曲線與實際輪廓曲線點坐標表達式,并在MATLAB中計算輪廓采樣點處的坐標值、繪制凸輪輪廓曲線以及輸出采樣點處的坐標,從而利用采樣點凸輪輪廓坐標在SolidWorks中建立凸輪三維模型,并完成拋光磨頭其它零件的建模與裝配。而針對采用將圓柱凸輪展開成平面凸輪計算凸輪輪廓所存在的誤差問題,通過在ADAMS中模擬擺桿和凸輪的實際運動情況,并測量在運動仿真過程中凸輪因誤差而上下浮動的數(shù)值,從而對凸輪輪廓曲線進行修正。最后,利用修正后的輪廓線建立凸輪的三維模型以及凸輪擺桿機構(gòu)模型,并進行運動仿真分析。從仿真得出的擺桿運動規(guī)律圖來看,擺桿的運動規(guī)律與理論設計基本相符,從而證明了采用此種方法來設計空間凸輪輪廓曲線的正確性。本文的研究為設計端面圓柱凸輪輪廓提供了一種新的思路,同時在今后對拋光磨頭結(jié)構(gòu)的研究以及優(yōu)化方面也具有重要的參考價值。
[Abstract]:Polishing head is the core part of ceramic tile polishing machine. Its performance directly affects the quality and production efficiency of polished tile.With the rapid development of China's real estate industry, the improvement of national living standards and the increasingly fierce competition in the international building materials market, both the output and quality of polished tiles are required to be higher.All this needs to improve the quality of domestic polishing machine can be achieved.At present, the equipment of domestic polishing machine mainly has some defects, such as broken bricks in the process of polishing and grinding, high noise and so on. Especially, the local wear phenomenon of cam is more serious in polishing grinding head.The precision of swing rod motion is low and the repair rate is high.How to improve the working performance of polishing machine, especially the polishing head, and how to improve the international competitiveness of domestic polishing machine equipment and polishing tile are the urgent problems that need to be solved in front of us.Based on the actual investigation and reference of a large number of related materials, this paper takes the polishing and grinding head of the ceramic tile polishing machine as the research object, and focuses on the research and analysis of the cam swing rod mechanism.In view of the research on the profile of the cylindrical cam on the end face, the method of expanding the cylindrical cam into a plane cam is adopted. By using the principle of coordinate transformation, the coordinate expressions of the theoretical contour curve of 1 / 6 segment and the point coordinate expression of the actual contour curve are calculated.At the same time, the coordinate value of the contour sampling point is calculated in MATLAB, the cam contour curve is drawn and the coordinate at the output sampling point is drawn, and the cam 3D model is established in SolidWorks by using the cam contour coordinate of the sampling point.And finish polishing the other parts of the grinding head modeling and assembly.Aiming at the error problem of using cylindrical cam to expand into plane cam to calculate cam contour, the actual motion of pendulum rod and cam is simulated in ADAMS, and the value of cam floating up and down due to error in motion simulation is measured.Thus the cam contour curve is corrected.Finally, the three dimensional model of cam and the model of cam swing rod mechanism are established by using the modified contour line, and the kinematic simulation analysis is carried out.The simulation results show that the motion law of the pendulum rod is basically consistent with the theoretical design, which proves the correctness of this method in designing the contour curve of the spatial cam.The research in this paper provides a new way to design the profile of cylindrical cam with end face, and also has important reference value in the research and optimization of polishing grinding head structure in the future.
【學位授予單位】：哈爾濱理工大學
【學位級別】：碩士
【學位授予年份】：2011
【分類號】：TH132.47

【引證文獻】

相關(guān)期刊論文 前1條

1 遲明善;邵俊鵬;王仲文;;拋光磨頭擺動機構(gòu)建模與運動仿真[J];哈爾濱理工大學學報;2012年05期

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本文編號：1747025