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Injection Molding Design Guidelines注塑模具设计指导

File Name Injection Molding Design Guidelines注塑模具设计指导 Introduction Much has been written regarding design guidelines for injection molding. Yet, the design guidelines can be summed up in just a few design rules. 已经有许多关于设计注塑模具的书了,但是设计准则可以被概括以下几点: Use uniform wall thicknesses throughout the part. This will minimize sinking, warping, residual stresses, and improve mold fill and cycle times. 1.零件整体壁厚保持均匀.这样可以最小化缩坑,翘曲,强度减小,模具填充和循环时间. Use generous radius at all corners. The inside corner radius should be a minimum of one material thickness. 2.在转角处大量采用圆角.圆角内部最小半径为一个壁厚. Use the least thickness compliant with the process, material, or product design requirements. Using the least wall thickness for the process ensures rapid cooling, short cycle times, and minimum shot weight. All these result...

ASME Y14.5M GD&T 中英文对照讲解(重新上传)

Introduction 简介: 一份ASME Y14.5 的中英文对照讲解,非常难得的中文资料. 关于ASME:最新的ASME  Y14.5M – 1994维度及公差标准反映出12年来最巨大的一些变革。本课程聚焦于这一新的标准在客户所在组织的具体应用，并且从设计者、生产者和检验者的角度对 GD&T功能性的应用。 应大家的要求重发本站一系列经典文档.www.goeway.cn Cover封面: Coming Soon Table of Content目录eword . . . www.goeway.cn. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111 COMMON SYMBOLS/通用符号 RADIUS, CONTROLLED RADIUS/半径,约束半径 STATISTICAL TOLERANCING SYMBOL/统计公差符号 NONRIGID PARTS-FREE STATE CONDITION/非刚性零件-自由状态条件 FEATURE CONTROL FRAME / 公差框格 SYMBOLS THAT CAN BE FOUND IN A FEATURE CONTROL FRAME/公差框格中的符号 MATERIAL CONDITION MODIFIERS –...

螺纹培训教材-非常详细

下载文档: 内容预览 第一部分   基 础 知 识 第一章   度量 当今世界上长度计量单位主要有两种，一种为公制，计量单位为米（m）、厘米（cm）、毫米（mm）等，在欧州、我国及日本等东南亚地区使用较多，另一种为英制，计量单位主要为英寸（inch），相当于我国旧制的市寸，在美国、英国等欧美国家使用较多。 1、公制计量：（10进制） 1m =100 cm=1000 mm 1 cm 0     1   2    3     4    5    6    7     8    9    10 mm 2、英制计量：（8进制） 1英寸=8英分        1英寸=25.4 mm      3/8¢¢×25.4 =9.52 1/16    3/16  5/16    7/16   9/16   11/16  13/16  15/16 0    1/8    1/4    3/8    1/2    5/8    3/4    7/8    1...

常用塑料手册（20种）

文档内容: 1.ABS...

图纸缩略语词汇[下载]/drawing abbreviations

开始陆续上传以前的经典文档,请关注: 图纸缩略语词汇 Historically, abbreviations were used frequently in construction documents as part of standard practice. They were part of the drawing symbology, but led to errors of interpretation by contractors. Since today, CADD drawing text is fast to input and is legible, abbreviations are strictly prohibited unless they are absolutely necessary due to space limitations, or they increase readability, such as in schedules. If you use abbreviations, you should follow these rules: 1. Use upper case lettering, without periods 2. Do not use spaces within an abbreviation 3. Use same abbreviations for singular or plural The abbreviations listed below are compiled from Architectural Graphic Standards, 1912, 1951, and 1956, Time Saver Standards, 1966, Skidmore, Owings and Merrill Drafting Standards, 1986, Holabird & Root Drafting Standards, 1987, Nagle Hartray & Associates Standards, 1989, Murphy/Jahn Office...

To Bee or Not to Bee 蜜蜂的哲学 原版下载

To Bee or Not to Bee ? 一听这个名字就能被它吸引的一本好书. 目前国内有了中文版, 书名叫<<蜜蜂的哲学>>, 个人觉得比台湾的译法<<人生最重要的问题>>文艺很多. 来自eBookDB的原版介绍: Authors:John Penberthy, Laurie Barrow Publisher: Panorama Pre Keywords: bee, honey, revised, making, there’s, book, beeings, life Number of Pages: 112 Published: 2005-07-15 ISBN-10: 0976864207 ISBN-13: 9780976864202 Book Description: Now in seven languages worldwide, To Bee or Not to Bee is the story -- clever and spiritually sophisticated -- of a worker bee who, with the help of a newfound friend, finds fulfillment amidst the mindless tedium and chaos of life in a honeybee colony. Imagine yourself in that stifling existence -- build the hive, forage, feed the larvae, store honey and pollen, sleep. Repeat. Throw in some curiosity and spiritual yearning and you get this clever and heartful inspirational ...

后BT时代美国大片非主流下载法

由于伟大的广*总局的努力,伴随BTchina等的倒下,中华人民共和国正式进入后BT时代.这里,我们来介绍一种下载美国大片的非主流方法.之所以说是非主流,因为这种方式仅适合部分人群--英语较好,不急迫之人. 我们先来介绍Rapidshare,Rapidshare网站是世界知名的文件上传下载托管服务商,在ALEXA网站的综合排名为第11位, 上面保存了10PB的各种资源,当然各种美国大片必不可少了. 由于Rapidshare的隐私性, 用户是没办法查询文件的,这时我们就需要专门的Rapidshare搜索工具了. 搜索视频文件, RSbay.com最适合不过了. Rsbay 拥有11,270,124个链接,其资源丰富啊,用XVid作为关键字搜索数量就超过22万个条目(每个条目下又用多个链接,总数很庞大了), 我们用2012为例来下载. 搜索"2012 doomsday" 提示有425个结果,随便点击一个进去, 比如"2012.doomsday.2008.dvdrip.xvid.tfe.part5.rar",...

NEMA与IP防护等级的对照比较

NEMA/IP Enclosure Types: The National Electrical Manufacturers Association (NEMA) provides descriptions,classifications, and test criteria relating to enclosures for electrical equipment. Tables 12-13, 12-14, and 12-15 compare the specific applications of enclosures for indoor and outdoor nonhazardous locations and indoor hazardous locations. NEMA防护等级，是美国电气制造商协会工业控制装置和系统中的外壳防护标准。NEMA的防护标准除了防尘、防水之外，还包括防爆（IP代码只包括防尘和防水）。 Specific Applications of Enclosures for Indoor Nonhazardous Locations NEMA的防护场合 Provides a Degree of Protection Against the Following Environmental Conditions Type of Enclosure 1* 2* 4 4X 5 6 6P 12 12K 13 Incidental contact with the enclosed equipment X X X X X X X X X X Falling dirt X X X X X X X X X X Falling liquids and light...

Tim Brown: Design Thinking

im Brown's Article about Design Thinking. Thinking like a designer can transform the way you develop products, services, processes—and even strategy. Thomas Edison created the electric lightbulb and then wrapped an entire industry around it. The lightbulb is most often thought of as his signature invention, but Edison understood that the bulb was little more than a parlor trick without a system of electric power generation and transmission to make it truly useful. So he created that, too. Design Thinking 是这几年谈的较多的一个词，也许就和之前的 “Innovation 和 Design”成为一个讨论热点。Design Thinking 由 IDEO 总裁 Tim Brown 等提出，Tim Brown 的 Blog 就叫做 Design Thinking，类似 IDEO 这些国际设计公司在多年前已经将设计公司的视角从单纯的设计服务提升到战略设计层面，那么这个Design Thinking 里或许就有他们多年实践经验可供借鉴。Design Thinking...