共查询到20条相似文献,搜索用时 171 毫秒
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以移动从动件圆柱凸轮机构为例.阐述了基于Solid Edge软件,运用投影曲线功能及扫掠除料功能进行圆柱凸轮建模,运用Dynamic Designer/Motion for Solid Edge Professional实现对空间凸轮机构的运动模拟、运动分析和动力分折的方法和技巧。 相似文献
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提出了模拟圆柱凸轮加工过程的圆柱凸轮轮廓曲面的计算机精确生成方法:建立刀具中心空间轨迹方程,保持刀具矩形截面垂直于刀具中心轨迹且沿其切线方向运动,从而在空间圆柱上切割出凸轮轮廓曲面.使用Pto/ENGINEER编程时,则将刀具中心空间轨迹方程程序化为基准曲线,应用可变截面扫描工具使矩形截面垂直于基准曲线且沿其切线方向运动,即可在圆柱实体上切割出该圆柱凸轮轮廓曲面.实现了直动从动件圆柱凸轮轮廓曲面设计的可视化和参数化. 相似文献
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针对摆动式圆柱凸轮机构中的圆柱凸轮提出了一种3D凸轮设计法。首先,根据摆动式圆柱凸轮机构的运动规律,建立了圆柱凸轮理论轮廓曲线的数学模型,并研究了圆柱凸轮最大压力角与基圆半径的关系,获得了确定基圆半径的方法;然后,通过求解空间圆柱凸轮理论廓线各点的空间曲率,获得了圆柱凸轮机构的滚子半径;最后,以自动药品装盒机中的高速取盒机构为例,对其摆动式圆柱凸轮机构中的圆柱凸轮采用3D凸轮设计法进行了设计,利用运动仿真表明了3D设计法的正确性。 相似文献
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《机械制造与自动化》2016,(5):72-74
说明了简谐运动规律原理、运动方程和应用场合,详细介绍了简谐运动规律圆柱凸轮轮廓曲线参数方程的建立和轮廓曲线的绘制方法,以及基于Mastercam X6的圆柱凸轮的四轴加工方法,其他运动规律的圆柱凸轮设计与加工方法与此相似。 相似文献
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在SolidWorks环境下,利用包覆特征实现了任意圆柱凸轮三维建模的方法和步骤,并在Motion插件中模拟仿真运动,仿真正确后导入CAXA制造工程师软件中生成四轴加工的数控程序。以余弦圆柱凸轮为例讲解了整个过程,为圆柱凸轮类设计及加工提供了通用的解决方法。 相似文献
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弧面分度凸轮的工作廓面复杂,设计繁琐,很难用常规的制图方法绘制.为了将复杂的凸轮机构可视化,实时地模拟其真实的运动状态,利用空间啮合原理建立了弧面分度凸轮的轮廓曲面方程.并采用模块化设计思想,基于Pro/E软件及VisualC 语言进行二次开发,实现了具有真实感的弧面分度凸轮的三维实体造型和运动仿真,为弧面分度凸轮机构的运动性能研究和企业的产品优化设计提供了软件平台. 相似文献
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This paper describes a computer-aided design and manufacturing system for the design and production of complex profiles for
high-performance drum cams within the specified tolerance. The system graphically generates the cam profile on the cylindrical
drum after performing an analysis of the kinematic performance for the prescribed follower motion, using a B-spline representation
of follower curves. Eight different types of follower motion for a translating follower are considered. The kinematic performance
is based on the criteria of achieving the lowest levels of velocity and acceleration for each curve. The system is also able
to simulate the motion of the designed cam graphically. The system also recommends the best cam profile on the basis of comparing
the kinematic performance of all the B-spline representations of all the follower motions. 相似文献
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通过对渐开线齿轮齿廓曲线组成进行分析,依托SolidWorks软件平台,提出了一种实用的渐开线圆柱齿轮建模方法,并基于SolidWorks软件的二次开发实现了渐开线圆柱齿轮实体模型的参数化设计。 相似文献
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Joong-Ho Shin Soon-Man Kwon Hyoungchul Nam 《International Journal of Precision Engineering and Manufacturing》2010,11(3):419-427
Plate cam mechanism can easily produce the positive and functional motions in contact of cam and follower. Generally cam mechanism
is used in many fields of mechanical control, automation, and industrial machinery. To obtain the accurate motion of follower,
the profile of cam must be designed and machined precisely. This paper proposes an instant velocity center method for the
profile design and a biarc fitting method for the profile machining to 4 different types of plate cam mechanisms with reciprocating
or oscillating motion and roller or flat-faced followers. The key of this paper is the introduction of a hybrid system combined
the design procedures and the manufacturing procedures. The main idea is that the minimum machining data are built by the
accurate biarc curves fitted directly from the design parameters. The radial direction angles toward biarc centers for the
accurate biarc curve fitting can be defined directly by the contact angle of cam and follower given in the design procedures.
An application of the proposed approach is verified the accurate profiles of a designed cam and a machining cam using the
minimum NC data within a given machining tolerance. 相似文献