ProE直齿、斜齿轮的参数化建模.doc

摘要

随着科技的发展， 计算机辅助设计技术越来越广泛的应用在各个设计领域。 现在，
它已经突破了二维图纸电子化的框架，转向以三维实体建模、动力学模拟仿真和有限
元分析为主线的机械系统动态仿真技术。 其研究范围主要是机械系统运动学和动力学 分析，核心是利用计算机辅助技术进行机械系统的运动学和动力学分析，以确定系统 及其各构件在任意时刻的位置、速度和加速度，同时，通过求解代数方程组确定引起 系统各构件运动所需的作用力和反作用力。动态仿真技术一出现，就受到人们的普遍
关注和重视，并且出现了许多基于动态方=仿真技术的商业软件，较有影响的有美国
参数技术公司的 PTC。
以 Pro/MECHANICA 为分析平台，运用有限元分析方法，对直齿轮、斜齿轮实际受
力情况、边界条件和施加载荷进行研究。运动分析模块可以进行机构的干涉分析，跟 踪零件的运动轨迹，分析机构中零件的速度、加速度、作用力、反作用力和力矩等。
运动分析模块的分析结果可以指导修改零件的结构设计( 长或者缩短构件的力臂长 加
度、修改凸轮型线、调整齿轮齿数比和中心距等) 或者调整零件的材料( 减轻或者加重
或者增加硬度等) 。设计的更改可以直接反映在装配主模型的复制品分析方案
(Scenario) 中，再重新分析，一旦确定优化的设计方案，设计更改就可直接反映到装
配主模型中。将 Pro/E 三维实体造型与 Pro/MECHANICA相结合，完成对 机构运动分析
连杆和凸轮机构的机构运动分析，及运动仿真。 强对连杆和凸轮机构的认识与理解。 加
关键词:直齿轮、斜齿轮; Pro/E 、Pro/MECHANICA; 运动仿真、有限元

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Abstract

With the development of technology, compu
becomes more widely used in various design.
framework
of two-dimensional
drawings 、 electronic
、shift tothree-dimensio
solid modeling, dynamic simulation and fini line of the mechanical system dynamic simul of its study kinematics and dynamics of mec
technology of
is use computer-aided dynamics
the kinematics of
and mechanical
systems analysis to determine the system an
the position, and
velocity accelerationtime,by algebraic
at same the solving
equations determine of requiredcomponent
cause
the the system moving action
and reaction.Dynamic simulation appeared to
attention,were parties
and there many =simulation
based
on dynamic business
software, more influential technology compa
ProMECHANICA for
To / platform analysis finite method,
using the element
on spur helical the
the gear, gear by force actual
of the situation, boundary
conditions and applied load were studied.Mo
institutional tracking
interference,trajectoryparts
the of parts, of bodies
in speed,
the acceleration,
force, reaction torque on.Motion
force and and so
analysis of analysis modify of structure
results the module to parts the could
guide design (longer or shorter moment arm
the adjust
cam, the ratiocenter
gear and distance,adjust
etc.) or the parts
of the material (to reduce or add to or inc
changesdirectly in assembly of master
can be reflected the of copies the model
program (Scenario), the re-analysis, Once o can be directly reflected in the assembly o
three-dimensional solid modeling and Pro /
analysis, complete linkage and cam
mechanism of the bodyanalysis and motion

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motion simulation.Connecting rod and cam mechanism to strengthen knowledge
and understanding.
Key words: spur gears, helical gears; Pro / E, Pro / MECHANICA; motion
simulation, finite element

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