槽轮间歇回转机构的设计(任务书,开题报告,外文翻译,进度计划表,论文说明书10000字,cad图纸4张)
摘 要
槽轮机构是由槽轮和圆柱销组成的单向间歇运动机构，又称马尔他机构。它常被用来将主动件的连续转动转换成从动件的带有停歇的单向周期性转动。槽轮机构有外啮合和内啮合以及球面槽轮等。外啮合槽轮机构的槽轮和转臂转向相反,而内啮合则相同，球面槽轮可在两相交轴之间进行间歇传动。
传统的槽轮机构在曲柄上的圆销进入或脱离槽轮啮合瞬间，其角加速度较大。为使槽轮机构传动平稳，减少冲击现象，本设计采用采用一种修正槽轮机构，它是利用圆销偏心的行星运动和槽轮啮合来实现，使传动更趋平稳。
本设计中的修正槽轮机构是用于塑料颗粒物用塑料薄膜制袋充填封口后，将塑料袋进行堆集的简式集装入库装置中回转栅板部件里的一个转位机构。它通过改变柱销进入或退出啮合时的撞击现象，即使其进入或退出啮合时瞬时角加速度等于零，从而使槽轮机构转动平稳、能传递一定的动力，扩大其使用范围。
在分析了槽轮机构工作原理和设计中所存在的问题基础上,建立数学模型,并对参数进行了优化设计,能有效地解决了槽轮机构在运动过程中的不平稳性,最大限度的降低冲击,为进一步和CAD 系统的连接提供了有效途径。
关键词：修正槽轮机构；间歇；优化设计
Abstract
The geneva mechanism is composed of sheaves and cylindrical pin unidirectional intermittent motion mechanism, also known as Malta institutions. It is often used to active continuously rotating parts to convert follower with a one-way stop periodic rotation. Sheave outer meshing with the ring and the spherical sheaves. The external mesh the Geneva mechanism sheave and turn turn in the opposite arm, internal meshing same spherical sheaves intermittent transmission between two intersecting axes.
The round pin of the traditional geneva mechanism in the crank on the to enter the or the escape grooves round of meshing an instant, its angular acceleration a larger. In order to so that the groove wheel mechanism smooth transmission, to reduce the impact of the phenomenon, the This design uses to adopt a correction groove wheel mechanism, it is take advantage of to round pin and eccentric the planetary motion of and slot round of meshing to achieve, to make the transmission become more smooth.
The correction geneva mechanism is used for filling and sealing of plastic particles with plastic film bag making, simple set of plastic bags piled an indexing mechanism mounted storage device rotary grid plate parts. It works by changing the dowel pin to enter or exit engagement impact phenomenon, even if it enters or exits the engagement instantaneous angular acceleration is equal to zero, the Geneva mechanism smooth rotation can pass a certain power to expand the scope of its application.
After analyzed the theory of Geneva Mechanism ,established the mathematical model ,and
optimized the parameters. This design can make the Geneva Mechanism run smoothly ,and show an effectivemethod of the link to CAD system.
Key words: Corrected geneva mechanism;intermittent;optimization design
目 录
摘 要 III
ABSTRACT IV
目 录 V
1 绪论 1
1.1 本课题的研究内容和意义 1
1.2 国内外的发展概况 1
1.3 本课题应达到的要求 2
2 槽轮机构的概述 3
2.1 槽轮机构简介 3
2.1.1 分类 3
2.1.2 工作过程 5
2.1.3 组成 5
2.1.4 作用 5
2.1.5 特点 5
2.1.6 优缺点 5
2.2 槽轮机构应用和研究现状 6
2.2.1 应用和研究现状 6
2.2.2 修正槽轮机构 7
3 槽轮机构的工作原理 14
3.1 工作原理 14
3.2 角速度和角加速度分析 16
4 槽轮机构的设计方案 18
4.1总设计方案 18
4.2 主要部件的设计 18
4.2.1 槽轮 18
4.2.2 主动轮臂 19
4.2.3 滚动轴 20
4.2.4 槽轮轴 21
4.2.5 主要标准件的选取 23
4.2.6 偏心轴 24
4.3 装配关系 24
5 结论 29
致 谢 30
参考文献 31
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