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机械类外文翻译【FY044】基于UG的减速器三维实体模型和运动仿真【PDF+WORD】【中文1600字】,机械类,外文,翻译,fy044,基于,ug,减速器,三维,实体,模型,以及,运动,仿真,pdf,word,中文

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内蒙古工业大学学报JOURNAL OF INNER MONGOLIA第 22 卷第 2 期 POL YT ECHNIC UNIVERSIT Y Vol. 22 No. 2 2003 c I | : 1001- 5167( 2003) 02-0153-04Inner M ongolia Polytechnic UniversityDepartm ent of M echanical EngineeringT he 11th Sino-Polish Conference on CAD in M achineryHuhhot, China, Oct ober 2002ZHANGYeCollege of Mechanical Engineering, Inner M ongolia Polytechnic University, Huhhot, 010062T HREE-DIM ENSIONAL ENT IT Y M ODEL AND M OVEM ENTEM ULAT ION OF REDUCER BASED ON U G PL ANEAbstract: This article introduces to m odeling for reducer w ith three-dimensional entity by M OSWLING module in the latest edition U GN X of UG softw are, w hich mainly concern w ith model of the maincom ponents such as shaft, gear, gear shaft, mount and cover andcom plete cor responding assembly. Then, car ry out movement emula-tion for all the assem bly w ith M OT ION module.Keywords: UG; three-dim ensional entity model; reducer; emulationU G is three-dimensional entity model plane which integrates CAD/ CAM / CAE, and is computeraided design, analysis and manufacture softw are w hich is used w idely in the w orld. There are severalpr oblem s should be paid attention to in this article: involutes tooth profile m odel of gear teeth, hol-low ing operation of cover w hen modeling, location betw een gear shaft and gear when assem bling.1Plottinginvolutestooth profileof gearteethInvolutes tooth profile of gear teeth can be plotted with expression in UGq3r. On the otherhand, this ar ticle pr ogram for involutes tooth pr ofile of gear teeth w ith V C+ + 6. 0 and save coordi-nate value of tooth pr ofile surface in corr esponding data file, and plot involutes tooth profile of gearteeth using read point fr om file in spline w ith the defined point.Polar coordinates parameter equation of involutes isq4rr k = r bcosnullknullk = invnullk = tgnullk - nullkmake rk and nullk go to x k= r kccosnullkyk = rkcsinnullkand spr ead w ith trigonom etric expressions, can get:xk = rbcqcos( nullk+ nullk) + (nullk + nullk) csin(nullk+ nullk )ryk= rbcqsin(nullk+ nullk) - (nullk+ nullk )ccos(nullk + nullk) rHere rk is radius of involutes tooth profile at K point, nullk is angle of involutes at AK segm ent, r b is basentsradius and nullk is pressure angle at K point.Fig. 1 Fig. 2Program w ith VC+ + 6. 0 and change (nullk + nullk ) fr om 0 to 180, can get corresponding xk and yk,and save them in corresponding data file jkx. dat. The results like Fig. 1.Inser tCurveSpline in UG main menu , click Through Points button after show ing dia-logue, then the system show dialogue Spline Through Points like Fig. 2. Click Points From Filebutton and select before-mentioned data file jkx. dat, can get corresponding involutes like Fig. 3.Fig. 3154 = v 2003 MntsBecause tooth thickness and tooth spacew idth of reference cir cle is equality, the opposite centerangle of gear teeth and tooth space is equality, then the opposite center angle of half tooth thickness is12c3602z , viz90z , here z is number of teeth. XC axis should be rotated nullk+90z and m ake the above nullkexpression go to, cor ner is tgnullk- nullk + 90z . Because of the pressure angle of r efer ence circle of standar dgear is 20, so XC axis should be rotated ( tg20- 203. 1415926/ 180) 3. 1415926180+ 90z . Plot aline at XC axis, and select the line as center of m irror and m ir ror involutes w ith Existing Line in M ir ror Through a Line. T he r adius of the angle betw een tooth profile surface and roof is =c* cm1- sinnulli, here m is module, nulli is nominal pressure angle, c* is bottom clear ance coefficientq2r. At last,can get three-dimensional entity model of gear w ith tr ipping, cornering and str etching. like Fig. 4.Fig. 4At the sam e method, can get gear teeth involutes tooth profile of gear shaft.2Someproblemsshouldbepaidattentiontowhen modelingcoverHollow cover after completing the whole model of cover , can get partial entity and cant get theperfect full entity. Here, we use Region in Hollow and change cover into tw o par ts: bearing seat,pr otuberant level and boarding body w hich is connect w ith mount is one par t, the other is anotherpart, and hollow separately. The key point is the two parts cannot Unite before hollow ing and mustbe United after hollow ing. We think the complicated body should be disintegrated into simple bodiesand be hollowed separ ately, then U nite.155 2 ZHANG YeThree-Dimensional Entity M odel and M ovement Emulat ionllnts3Locationof gearshaftand gearwhenassemblingAxial location between gear and gear shaft is not confir med w hen they are assembled on mount,so intervening can happen among gear teeth. T here are eight types r estriction in UGq1r, such as Mate,Align, Angle, Parallel, Perpendicular, Center, Distance and T angent, but they all cannot set upmating relation of tw o gears. T herefore, it is necessar y to plot corresponding location surface duringthe course of entity m odel of gear shaft and gears. Here w e plot centerline of tooth space of gear shaftand centerline of gear teeth and the two lines should be kept parallel each other during the course ofassem bly, so the intervening am ong teeth can be avoided. We keep the above tw o lines separately par-allel w ith fr inge lines of mount w ith Parallel restriction relation, so the tw o lines may be parallelmor e. T hereby, gear teeth cannot intervene during the course of engagem ent.We complete three-dimensional entity model of the m ain components of r educer . Then, w e m akemovem ent emulation for it. Fir st, establish movement analysis case, and gear shaft and bearing insidetrack is link 1, and shaft, gear, fixed-distance loop and cor responding bearing inside track is link2.Then, set up Joint for movement unit, namely set up Revolute betw een gear shaft and gear separate-ly. At last, set up Compound -Gear of revolute1 and 2. Select Kinematic/ Dynamic Analysis in Ani-mation, and input T ime and Step, w e can make movem ent emulation for reducer .Reference: 1 Guangli Zhang, Peng Zhang, Xue Hong, UG18 BASIC TU TORIAL Beijing: publishing company of Qinghua U ni-versity, 2002. 2 Rongtan Feng, Zhuyou Tian. HOW T O COM E TRUE GEAR PAIR THREE -DIM ENSIONAL M ODEL M .Journal of Beijing mechanical t echnical college, 15 book number 4( 2000) 3Chunxiang Dai. EM U LAT ION FOR ENGAGEM ENT OF INVOLUT ES GEAR W ITH U G SOFT WAR J . Ein-corporation of machine and electricity 2001. 02 4Xikai Huang, Wenw ei Zheng. M ACHINE PRINCIPLE ( No. 6) publishing company of higher education, 1989 U G h L 8 _ 张烨(= v ,= + 010062)K 1 : UG q K UG NX M OSW LING v h L 8 / , 1 , q a a a/ Q 8 a Q 8 # M .K UG M OTION v _ .1 o M : UG; L 8 ;h ; _ m s | : T H164 D S M : A156 = v 2003 Mnts 基 于 U G 的减速器三维实体模型和运动仿 真 张烨 （内蒙古工业大学机械学院，内蒙古 呼和浩特 010062） 摘要： 本文介绍了用 UG软件的最终版 UG NX的 MOSLING模块对减速器进行了三维实体造型，主要零件包括轴、齿轮、齿、轮轴、下箱体、上箱体及相应的装配。最后在 UG的 MOTION模块中对装配模型进行了运动仿真。 关键词： UG；三维实体造型；减速器；仿真 中文分类号： TH16 文献标识码： A UG是三维实体模型于一体的 CAD / CAM/ CAE技术 及广泛应用于全球的计算机辅助设计、分析、制 造软件。在这篇文章中有几个问题应注意的是：渐开线齿齿轮轮廓模型、当操作时镂空造型的封面、 齿轮轴和齿轮之间的装配时的位置 。 1 绘制渐开线齿廓齿轮齿 另一方面 齿轮渐开线齿廓齿可在 UG 3里的“表达”绘制 ， 这个渐开线齿轮齿牙用 VC+ 6.0 配置文件的文章保存协调方案和相应的数据文件中齿廓面价值 ，并用定义样条绘制 渐开线齿廓齿轮使用“从文件中读点”。 渐开线极坐标参数方程是 将 和 代入 和三角函数表达式的扩展，可得到： 这里的 是在 K 点处的渐开线齿形半径， 是渐开线在 AK 段得角度， 是基圆半径， 是在 K 点处的压力角。 nts 图 1 图 2 用 VC+ 6.0 程序来改变 从 0 到 180 改变（ K+K） ，可以得到相应的 Xk 和 Yk，并保存相应的数据文件 jkx . dat，如图 1 所示。 在 UG 的主菜单中有插入 曲线仿真 ，单击“通过点”按钮 会弹出对话框，然后系统显示如图 2 通过点样条。单击“从文件中取点”按钮并且选择前面提到的数据文件 jkx . dat，可以得到如图 3 中相应的渐开线。 图 3 nts 由于齿厚和参考圆齿空间 宽度是相等的， 齿轮的齿与齿的空间相对圆心角是相当的，那么相反的半齿厚中心角是 ，即 ， z 代表齿数， XC 轴应旋转 并且通过 的表达式算出 ， 角是 由于参考标准齿轮压力角为 20 ， XC 轴应该旋转 。在XC 轴上绘制一条直线，然后选择这条线作为镜像的中线，用“已有线 ”在“镜像线”来镜像渐开线，在齿廓面和齿顶的半径角是 ， m 为模数， 是公称压力 角， c 是 齿底系数 。最后，可以的得到如图 4 齿轮的三维实体模型。 . 同理，可以得到齿轮渐开线齿轮轴轮廓。 2 当覆盖建模是有些问题应该得到重视 空心盖在完成了覆盖整个模型，可以得到部分实体，不能得到充分完美的实体。此文中，我们 利用“空心化”里的“区域”和将覆盖分为两部分：轴承座，突起的水平和寄宿而且可以 联接在一起的是其中的一部份；其余的是另外一部分，和空心分离的。这关键点就是在空洞化之前联接，并且必须在空洞化之后。我们认为， 复杂的机构应当分解为简单的机构，并 分别挖空 ，然后再联接。 3 齿轮轴和齿轮装配时的位置 齿轮和齿轮轴之间的轴向位置 当在组装是去确定的，所以干扰可能发生在齿nts 间。在 UG 中，有八种类型的限制，例如： 啮合 、对齐、角度、平行、垂直、中心、距离和正切 ，但他们都不确定两个齿轮的啮合关系。因此，有必要在齿轮轴和齿轮的实体模型设计时绘制相对位置。 在 装配过程中我们绘制齿轮齿轴中心线与中心线空间齿轮齿和两行应保持相互平行 ，所以干扰可避免与齿间。 我们一直与边缘线以上两行分别平行安装，带平行制约