首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到17条相似文献,搜索用时 281 毫秒
1.
对平行分度凸轮机构的运动原理进行了分析,利用Pro/E进行二次开发,实现工作凸轮轮廓数据的计算,并对平行分度凸轮传动机构进行了运动仿真.结果显示,该平行分度凸轮CAD/CAM设计系统提高了设计效率与设计质量,具有可视化操作与动态仿真分析等功能,大大简便了凸轮机构设计工作.  相似文献   

2.
基于Solidworks的凸轮机构的实体建模   总被引:1,自引:0,他引:1  
在Solidworks环境下探讨了实体建模的方法,对平行分度凸轮机构的关键部件及凸轮廓线进行了三维实体建模,最终实现了虚拟环境下机械产品的设计和装配。所建模型具有一般性,为平行分度凸轮机构的开发设计提供了有效的方法,同时也为复杂零部件的设计奠定了理论基础。  相似文献   

3.
以弧面分度凸轮为例,利用激光扫描仪测量了弧面分度凸轮的三维几何数据,阐述了弧面分度凸轮点云的拼接方法,使用曲面拟合、曲线混合和曲面放样等功能分段创建了弧面分度凸轮的工作廓面,在通过曲面剪切和曲面缝合功能最终创建了弧面分度凸轮的三维实体模型。该方法对创建弧面分度凸轮的三维实体模型提供了一种切实可行的方案,具有较好的应用价值。  相似文献   

4.
弧面凸轮分度机构是一种新型间歇传动机构,广泛应用于各种机械传动中.我们以弧面凸轮工作轮廓面方程和共轭接触方程为基础,详细计算了弧面凸轮分度机构的运动参数和几何参数,并根据设计要求,利用UG构造了弧面凸轮分度机构的三维特征模型.  相似文献   

5.
本文阐述了弧面分度凸轮机构的逆向CAD设计方案,并编写了有关计算机程序,快速、简便地计算出凸轮的廓面坐标值,最后据此数据利用Pro/ENGINEER建立了弧面分度凸轮机构的三维模型。  相似文献   

6.
本文研究了凸轮机构设计的CAD方法 ,具体介绍了平面凸轮轮廓曲线设计的CAD方法 ,包括其数学模型的建立、运行过程以及该方法的使用性。  相似文献   

7.
从弧面分度凸轮坐标系的选取,凸轮工作轮廓线的曲面方程的建立分析了弧面分度凸轮曲面的设计方法.  相似文献   

8.
本文研究了凸轮机构设计的CAD方法,具体介绍了平面凸轮轮廓曲线设计的CAD方法,包括其数学模型的建立、运行过程以及该方法的使用性。  相似文献   

9.
通过对凸轮轮廓曲线的几何分析,运用应用程序Excel和Auto CAD精确地绘制出了凸轮的轮廓曲线,解决了Auto CAD2000中不能画凸轮的问题,使Auto CAD2000的功能得到了扩展。  相似文献   

10.
凸轮活塞式发动机的核心部件为双面空间圆柱凸轮,其轮廓曲线将影响发动机的工作性能.设计过程中移动从动件运动规律以正弦加速度曲线为例,介绍此类发动机关键部件的设计思路,并采用极坐标法建立凸轮理论轮廓曲线方程和实际轮廓曲线方程之间的关系.  相似文献   

11.
弧面分度凸轮机构的分析与设计   总被引:2,自引:0,他引:2  
1 Introduction Thegloboidalindexingcammechanism(Fig.1)iscomposedmainlyofadrivenrotatingdisk1,adrivinggloboidalcam2andaframe.Itisamodernintermittentindexingsteppingdeviceandiswidelyusedinthehighspeedmechanicalequipmentoflightindustry,electronicindustryands…  相似文献   

12.
This paper is aimed to propose an approach to predict the dynamic characteristics of ring-plate planetary indexing cam mechanism, which is a novel type of indexing mechanism that employs internal planetary transmission structure. Firstly, the geometry and structure of the mechanism are discussed and the kinematic practicability is simulated with virtual prototype design. Then a 3D finite element model of the ring-plate planetary indexing cam mechanism is developed with the commercial software of MATLAB and ANSYS. Through the finite element analysis, the natural frequencies and the corresponding mode shapes are predicted in one motion cycle. On the basis of the virtual prototype design and finite element analysis, an experimental prototype is made and tested to validate the prediction of the dynamic characteristics. The agreement between experimental results and the finite element analysis testifies that the finite element model developed is applicable to the prediction of the dynamic characteristics of this type of mechanism.  相似文献   

13.
文章介绍了用随机方向探索法设计凸轮轮廓曲线的原理,采用高次方五项式构造了凸轮型线的优化设计数学模型,并用Delphi语言编制了最优化设计程序和凸轮轮廓设计程序,求出了气门运动的速度,(最大、最小)加速度,并绘出了相应的曲线.数值计算实例表明:高次方多项式气门凸轮各个条件均符合凸轮设计的要求.  相似文献   

14.
介绍了用VBA创建图形用户界面,编制宏代码,在AutoCAD中设计和绘制出凸轮轮廓曲线的一种方法,为在AutoCAD中设计和绘制复杂平面曲线提供了指导意义。  相似文献   

15.
This paper focuses on the analysis of running conditions and machining processes of conical cam with oscillating follower. We point out the common errors existing in the design and machining of the widely used plane expansion method of conical cam trough-out line. We show that the motion can be divided into two parts, i.e. the oscillating motion of oscillating bar and the rotary motion of oscillating bar relative to the conical cam. By increasing the rotary motion of oscillating bar, the motion path of tapered roller on oscillating bar (i.e. contour surface of conical cam) can be expanded on the cylinder. Based on these analyses, we present a creative and effective designing and machining method for 3D curve expansion of conical cam with oscillating follower.  相似文献   

16.
数据库访问的效率是决定应用系统执行效率的关键因素之一.索引的设计应建立在对各种查询的分析和预测上.通过在Microsoft SQL Server 2008上对四种索引方案的测试,提出了利用索引优化数据查询的方法.在实际应用时,要根据系统的实际情况,权衡修改性能和检索性能的需求,选用合理的索引策略.  相似文献   

17.
This paper focuses on the analysis of running conditions and machining processes of conical cam with oscillating follower. We point out the common errors existing in the design and machining of the widely used plane expansion method of conical cam trough-out line. We show that the motion can be divided into two parts, i.e. the oscillating motion of oscillating bar and the rotary motion of oscillating bar relative to the conical cam. By increasing the rotary motion of oscillating bar, the motion path of tapered roller on oscillating bar (i.e. contour surface of conical cam) can be expanded on the cylinder. Based on these analyses, we present a creative and effective designing and machining method for 3D curve expansion of conical cam with oscillating follower.  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号