UG教学：阀盖的画法

第一篇：UG教学：阀盖的画法

阀盖的做法

班级：机自11102班 姓名：曹杨军 学号：201115010216 1，文件→新建→输入文件名→确定。2，选择一个基础平面作为草绘平面。

3，曲线（和特征一栏中）→多边形→侧面数6→确定→外接圆半径→确定→圆半径16→选中圆点做中心→确定（得到图1）。

4，拉伸→拉伸距离5→指定矢量为—ZC轴→选中多边形的改变（得到图2）→确定。

5，圆锥→指定矢量—ZC轴→指定点为圆点→直径32→高度为30→点确定（图3所示）→得到图4。6,求交（如图点击求交）→目标选择锥体上部→刀具选择六边形→确定→7，拉伸

→选择六边形→矢量方向ZC →拉伸的高度为10→确定→得图6。

8，凸台→直径32→高度为5→确定得到图7；再按图8定位→选择一条棱→P34=16（进行两次）→得图9

9，同样的方法得到小圆台（图10）

10，打孔→指定矢量—ZC轴→直径12→深度20→顶锥角120度→确定→图11 11，槽→矩形槽→选择小凸台侧面→槽直径26→宽度2→确定（最终得图13）, 12，螺纹（图14）→选择详细→大径30→小径28→长度12→螺距2→角度60→确认→得到图15（完成）。

第二篇：UG模具设计视频教学

UG模具设计视频教学.手机按键面盖

UGS has just launched the latest release of its next generation platform for product definition, so Al Dean sat down with the NX technical team and went through the highlights for this fifth release.New ‘Modular’ Dialogs, the Dialog Rail and a new sophisticated UI make for significant productivity gains in NX 5 The NX user interface has undergone a lot of changes over the past five releases, each aimed at making the system more and more accessible, so users can discover new functionality without having to resort to manuals or other training materials.NX 5 continues this trend with some impressive developments.The development team has broken down every command into its constituent parts(or blocks)then used those common blocks to build workflow-oriented command dialogs that guide the user through each operation.What this means is that now there is just one block for each input method, parameter assignment or option.In other systems(including previous releases of NX)you typically have a wide array of inputs for every feature, but the manner in which you use them differs between each command.UGS has rationalised these differences and the result is a system in which you learn a task once(perhaps selecting geometry, assigning limits etc)then reuse that knowledge in every other command you come across that uses that same input.But it doesn’t stop there, the Block-based dialogs are combined with two other new UI features.Firstly, the dialogs themselves are now organised into workflows(using these blocks)and you have a huge amount of feedback about the process you’re working on.Dialogs present the most commonly used options for a command, so you can build basic features very quickly.If you need to access the more advanced options and parameters then you simply click the appropriate section of the dialogwith all settings rememberedall of which makes NX easier to learn and adopt to ‘your way of working’.(Bottom)The new Dialog provides a logical top-down workflow with ‘Required’ inputs marked with a red asterisk and ‘Satisfied’ inputs with a green check.The current ‘active’ selection is highlighted in orange and clicking the middle mouse button automatically takes you to the next step – highlighted in green.The new Modular Dialog with its visual prompts and selection feedback delivers an impressive user experience.Assembly handling & active mock-up Alongside user interaction, there has also been work done on how the system handles large assemblies.Now, while this is something that most vendors work on with each release, UGS has a pretty impressive ace up its sleeve – namely, JT.This is the lightweight data exchange format that many organisations(such as Ford)have based their data management and visualisation processes on and the company has many years of expertise in handling large, complex datasets in an efficient manner.This knowledge has been brought to bear in the NX 5 release with some new technology that initially makes loading large scale datasets more efficient.It also makes working with that data more efficient as well as providing some new tools.The system will load a JT-based facetted version of your assembly, meaning that all the extraneous information isn’t loaded and doesn’t impact manipulation or handling.As you zoom in and out, the system decimates the data, removing small features and parts to make it more efficient.But unlike many other systems, you can actually perform a lot of work with this facetted data.You can section it, measure it accurately(as it can intelligently load the b-rep model that’s stored in the JT format alongside the facet data)but you can also conduct some Digital Mock-Up processes that would typically require a separate application.Here, UGS has integrated Digital Mock-Up tools to handle things like large scale visualisation, real-time rendering, Dynamic Clearance and Clash Detection as well as Extraction Path Planning, which allow you to find out if components can be removed from within an assembly for service and repair purposes.This last feature has been part of the UGS offering as Teamcenter Visualisation for some time, but this is the first time it’s been integrated into NX.Product Interface Publishing Another addition to the NX 5 release which I find intriguing is the ability to publish(in terms of data management)product interface features – so let’s explore the concepts.When you have a team working on a product development product, it’s often the case that you have core features within each part or sub-assembly that are used to interface, assemble, mount or attach that part to another.Now, the rest of the part might be in a state of flux in terms of geometry changes, but what you really need to do is to be able to manage and resolve those interface issues as the product is developed.Product Interface Publishing assists with this process.By defining faces, features or other geometric features within your parts which are used as the interface to other parts, you can publish this information within Teamcenter so that users working on related parts or sub-assemblies are aware of design changes made to those critical features.This means you get the usual notifications of mods, and revision controls those features specifically.Also, you have the ability to use those core features and lock any assembly mating work to just use those features.This means that parts have to be mounted in the way you require, which removes a massive potential for error.In these days of contract engineers, who may not have higher-level understanding of your products, this is pretty bloody useful.The Interfaces are stored within the part tree and are immediately available.Also, because you’re building this information into the core of your product, you can use that for queries by running ‘where used’ searches and the like, so the effects of modification of those critical features can be investigated with ease – something that you typically couldn’t do to at such a granular level.教程地址：

UG模具设计视频教学.手机按键面盖

第三篇：水彩人物画法教学

1.人物写生的特点

在水彩画中水彩人物是比较难掌握的，不像静物和风景那样可以把对象随意的增减、修改比例、变换色彩，它要求有十分准确的造型能力和良好的素描功底，特别是人物表情和动态神色的刻画需要画家有十分深厚的功底。

人物的肤色变化是非常微妙的，在不同的光线和环境中肤色的变化就更加丰富了，我们须在纸湿的过程中来表现颜色的变化，使颜色相接的比较自然生动。要抓住大的肤色基调，大胆的概括，下笔干净利落，不拖泥带水。初学者可多画一些淡彩人像和人体速写，这对提高技法是十分有益的。

2.人物写生分类

①头像：在画人物头像时，首先要注意面部的结构及肌肉的变化特征，抓住大的色调及冷暖关系，强调五官神态及微妙的色彩变化。画头发时不要只用单一的墨色来表现，要考虑环境色及淘汰色对头发的影响，强调冷暖色的对比。画的过程中适当的加入一些褐色或普蓝色倾向的色彩，可使头发的色彩变得生动而自然，还要注意干、湿画法的结合运用及高光的处理，画面的高光最好是留出纸的空白。

②半身像和全身像：画半身像和全身像时，要处理好面部色彩与服装色彩之间的关系，注意手和脚的刻画，还应注意人物与背景的构图处理。肤色的变化直接受到服装面料颜色的影响，要仔细的观察对比光源色及环境色对肤色的变化所起的作用，同时也要主动的处理好画面的主次虚实关系。处理服装时要从画面的整体出发，色彩及图案要恰到好处，不可喧宾夺主。

③人体：用水彩来表现人体是有相当大的难度的，要求你既要有严谨的造型能力，又要有表现色彩的丰富的经验。我们要认真了解人体的结构特征及肤色的变化特点，做到胸有成竹，一气呵成。

3.人物写生步骤

太行山娃。

①用HB铅笔起稿子，注意造型和素描关系，为上颜色打下好的基础。

②画出小山娃的面部色彩及衣服的大的色彩关系，下笔要大胆准确，不可拖泥带水。面部是先用清水打湿纸面，之后再上色，并画出大的明暗关系，使颜色的衔接比较自然。

③进一步刻画面部的色彩变化及头发的颜色，将衣服的色彩及衣纹深入表现。

④将背景颜色全部涂上，调整人物的面部色彩，刻画面部的神态，画出衣服的花纹和背景的色彩，画背景要注意虚实的处理及冷暖的变化。

这幅人物作品是要表现太行山区的农家小女娃在上午的逆光环境下的动人的神情。面部的神态在逆光的条件下显得比较朦胧，裤子的鲜艳的红色同背景的色彩形成强烈的明暗及色彩的冷暖的对比。画面是要强调小女娃的面部神情，背景画的比较写意，增加了画面的虚实效果，突出了主题。

画人物是比较复杂的，即要有严格准确的造型，又要有丰富微妙的色彩变化，要学会用色彩来塑造形象。

第四篇：速写教学教案——树木画法

风景速写——树木画法

刘本华

教学目的：

1、掌握树木基本画法，准确、生动、深刻地表现对象，为将来风景速写写生打下基础。

2、通过速写练习，观察生活，使学生热爱生活，关注身边的事物，培养学生灵敏的观察、感受能力和迅速捕捉物象形神的能力，能够用美术语言表达自己的内心感受。

教学重点：掌握速写的基础知识、基础理论和基本技能，能够准确、生动、深刻地表现对象。

教学难点：如何启发学生的艺术感受，引导学生探索不同的表现方法、开发自身的语言模式，使自己的作品有自己的语言风格特点。

课时安排：2课时 教学用具：范画

学习用具：画夹、铅笔、橡皮、钢笔、炭笔等 教学过程：

一、组织教学

检查学生工具材料准备情况，维持上课纪律

二、导入

教师总结上节课的临摹情况

三、讲授新课（第一课时）

1、树干画法

（1）、观察树木生长规律

主干粗，枝干细，树枝越分越细（2）、树无三寸直

树要画的苍老，用笔肯定，苍劲有力（3）、树要四面出枝

（4）、树干画法：双勾法、写意法（5）、教师示范

双勾法

写意法

（6）、学生练习：临摹树干画法

（第二课时）

2、树枝画

（1）、观察树枝生长规律：树枝越分越细（2）、树枝表现方法：

鹿角法：树枝向上的夹角成锐角，像鹿角一样

蟹爪法：树枝向下的夹角成钝角，像蟹爪一样（3）、教师示范（4）、学生临摹练习

树枝画法

单棵树画法

单棵树画法

四、课堂小结

对学生练习中出现的普遍问题集体讲解，然后针对个人问题个别辅导，学生要求自己修改整理画面。

五、布置下节课工具材料准备

板书设计：

第五篇：角的画法教学反思

“角的画法”一课教材上只是呈现了用量角器画一个65°的角，按老教法老师只要教给学生如何用量角器画出一个65°的角即完成了教学任务，然后可以用大量的时间进行练习巩固，而这样的教学只能让学生成为一名熟练的技工，而心智得不到开发，个性的张扬、创新能力的培养就得不到落实，角的画法教学反思。如何激活教材，使课堂学习真正实现“以学生的发展为本”？怎样体现学生的探究？我努力做了以下探索：

1.开发教材，为学生搭建新知迁移的平台。

新课程标准指出：学生数学学习的内容应该是现实的、有意义的、富有挑战性的，这些内容要有利于学生主动地进行观察、实验、猜测、验证、推理与交流等数学活动，教学反思《角的画法教学反思》。

于是，我让学生自己去发现、自己去探究、自己去创造方法。但教师要给予必要的支持，“用三角板你能画出哪些指定度数的角”这一活动应运而生。这一开放性活动，激起了学生已有的知识经验，学生在操作活动中体悟了画角的实质：先找到一个对应的已知度数的角，再画。知其所以然了，更复杂的探究活动就有了方向：找到量角器上65°的角，先用活动角摆一摆，再设法把他画到纸上去，再借助量角器画出来。只有教师对教材的深刻把握，才能找到新知建构的生长点，才能巧妙地使学生的新旧知识迁移顺利发生，从而使“自主探究”的学习成为可能。

2.开放时空，促进学生主动感悟

学习知识的最佳途径，都是由自己发挥、探究、研究，因为这样理解更深刻。“让我们来画一个65°的角吧！”挑战性的问题一抛出，刚刚热烈的课堂安静了，学生进入了“心求通而不得”的境地。“请同学们观察一下老师提供的学具，你能受到什么启发呢？”学生看到了量角器上的65°的角，学生自己找到了画角的好帮手——量角器。寂静之后的课堂，充满着思维的碰撞。在相互的启迪中，巧妙不一的各种方法诞生了。学生享受了自主感悟、发现、创造的快乐，课堂也因此充满了生命的灵动。