What are the benefits of Zero Position Tolerance at MMC
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美国/欧洲几何尺寸和公差(GD&T)高级培训培训对象:项目经理,设计、质量,工艺和制造工程师,质量检验员。
直接负责准备PPAP 的人员或APQP小组成员。
课程信息:工程图纸和公差(Engineering Drawing/Tolerance)工程图纸(Engineering Drawing)尺寸标注介绍(Dimensioning)尺寸标注标准(Dimensioning Standard)GD&T介绍、符号和缩写历史,目的,范围GD&T符合比较(ANSI/ISO)测量单位公差表示方法暗含垂直关系GD&T与传统坐标的关系和差异GD&T 层次(GD&T Hierarchy)零件配合符号和缩写基准(Datum)基准的定义, 基准形体(Feature)基准和尺寸波动关系基准参考框(Datum Reference Frame)基准次序(Datum Precedence Order)基准模拟(Datum Simulator)符号位置(Symbol Placement)基准目标(Datum Target)基准点(Datum Target Point)基准线(Datum Target Line)基准区域(Datum Area)基准指导(Datum Guidline)自由状态(Free State)基准偏移(Datum Shift)基准应用RFS (Datum RFS)基准应用MMC (Datum MMC)形体控制框(Feature Control Frame)目的(Purpose)符号(Symbol)基准形体参考(Datum Feature References)材料原则对实体基准参考的影响(Material Condition on FOS Datum Reference)基准次序和材料原则的影响(Datum Sequence and Material Condition)形体控制框类型(Types of Feature Control Frame)规则:(Rules)形体尺寸#1, #2 (Rule #1, #2)公差补偿(Bonus Tolerance)尺寸波动(Variation of Dimension)形状波动(Variation of Form)实体条件(Virtual Condition)公差补偿(Bonus Tolerance)形状公差(Form)平面度(Flatness)定义和要求(Definition, Requirements)直线度(Straightness)定义和要求(Definition, Requirements)直线度-轴(Axis –RFS)直线度-轴(Axis –MMC)直线度-中心面(Center Plane - RFS)直线度-中心面(Center Plane - MMC)圆度(Roundness)定义和要求(Definition, Requirements)圆度: 圆柱和圆锥(Cylinder or Cone)圆度: 球(Sphere)圆度: 柔性零件(Nonrigid Parts)圆柱度(Cylindricity)定义和要求(Definition, Requirements)方位(Orientation)垂直度(Perpendicularity)定义和要求(Definition, Requirements)垂直度-面(Plane Surface)垂直度-线和面(Line and Plane Surface)垂直度-中心面(Center Plane)垂直度-轴(Axis)垂直度-销和凸台: RFS (Pin or Boss: RFS)垂直度-销和凸台: MMC (Pin or Boss: MMC) 垂直度-零公差: MMC (Zero Tolerance at MMC) 平行度(Parallelism)定义和要求(Definition, Requirements)平行度: 面(Parallelism: Plane)平行度: 轴(Parallelism: Axis)平行度: 轴和面(Parallelism: Axis and Plane) 角度(Angularity)定义和要求(Definition, Requirements)角度: 面(Angularity: Plane)角度: 线(Angularity: Line)角度: 轴(Angularity: Axis)角度: 线面(Angularity: Axis and Plane)相切平面(Tangent Plane)位置(Position)定义和要求(Definition, Requirements)位置度规定: 孔(Hole)位置度规定: 实体(FOS)位置度规定: 双边公差(Bidirection Tolerance)位置度规定: 延长孔(Elongated Hole)位置度规定: 延伸公差(Projected Tolerance)课程内容位置度规定: 长孔(Long Holes)位置度规定: 球(Sphere)位置度规定: 长圆孔阵列(Slot Patterns)同轴度(Coaxiality)同心度(Concentricity)复合位置( Composite Position)对称度(Symmetry)跳动度公差(Runout Tolerance)定义和要求(Definition, Requirements)跳动度: 基准直径(To Datum Diameter)跳动度: 共线基准直径(To Collinear Datum Diameter)全跳动度(Total Runout):固定和松动紧固(Fixed and Floating Fasteners)松动紧固(Fixed Fasteners)固定紧固(Floating Fasteners)轮廓(Profile)定义和要求(Definition, Requirements)线轮廓(Profile of Line)线轮廓-双边公差(Bilateral Tolerance)线轮廓-单边公差(Unilateral Tolerance)线轮廓-全部周边(All Around)面轮廓(Profile of Surface)面轮廓-不规则形状(Irregular Feature)面轮廓-锥体(Conical Feature)面轮廓-锥体(Conical Feature)面轮廓-共面(Coplanarity Surface)面轮廓-多面(Multiple Surface)复合轮廓(Composite Profile)GD&T功能检具设计案例(GD&T Function Gage Design Case)检具基准建立(Gage Datum)综合检具通规(Function Go Gage)检具公差分配(Gage Tolerance Analysis)检具风险分析(Gage Risk Analysis)GD&T测量实现:传统测量和CMM测量(GD&T Measurement: CMM) 测量基准建立(Measurement Datum Setup)测量误差分析(Measure Error Analysis)形状公差测量(Form Measurement)定向公差测量(Orientation Measurement)位置度测量(TOP measurement)位置度基准建立(TOP datum setup)复合位置测量(Composite TOP Measurement)位置度应用实体原则的测量,包括公差补偿和基准偏移(TOP with MMC/LMC Measurement, include Bonus Tolerance, Datum Shift)轮廓度测量(Profile Measurement)轮廓度基准建立(Profile Datum Setup)轮廓度应用实体原则的测量:只有基准偏移(Profile with MMC Measurement, Only Datum Shift)尺寸链叠加案例(Tolerance Stackup Case)极限公差尺寸链(Limit Tolerance Stackup)统计公差尺寸链(Statistic Tolerance Stackup)案例分析和练习包含在以上所有内容现场辅导:检具设计(Gage), 测量分析(CMM)和图纸理解(GD&T Print Reading)问题解答学员背景要求:具备基本的机械图纸阅读的基础和基本的机械产品生产过程知识。
高二外研版选修7英语课时作业十一、十二要的学习也是需要做题的,不是只有理科的科目才需要做题,下面店铺的小编将为大家带来选修7的课时作业的介绍,希望能够帮助到大家。
高二外研版选修7英语课时作业十一Ⅰ.用所给词的适当形式填空1.She ________ (estimation) that the work would take three months.2.I can say with ________ (certain) that this is true.3.He was ________ (delegate) to the convention.4.The science fiction film had some ________ (marvel) special effects.5.The company is planning to ________ (large) its production scale.6.He was ________ (honor) with a title of “the Model Worker”.7.The whale is an ________ (endanger) species.8.He thinks ________ (ignore) their playing computer games all day is wrong.9.She ________ (remove) the dirty dishes from the table.10.The ________ (absent) of electricity made matters worse.答案:1.estimated 2.certainty 3.delegated 4.marvellous 5.enlarge 6.honored 7.endangered 8.ignoring 9.removed 10.absenceⅡ.选择适当的短语填空1.I saved him while he cheated me ________.2.The boat was ________ the rapid water.3.This photo ________ me ________ my old friend.4.He has ________ the difficult situation.5.________ at least 6,000 men would have been needed to finish this task.6.________ his school work, he takes interest in anything.7.________ you ________ I should be punished.8.She ________ do the task well on time.9.He certainly was going to ________ $5 million ________ this company.10.The pole is about a metre ________.答案:1.in return 2.at the mercy of 3.reminds; of 4.gone through 5.It's estimated that 6.Apart from7.Not; but 8.undertook to 9.bid; for 10.in lengthⅢ.用适当的介词填空1.This hotel reminds me ________ the one we stayed in last year.2.This is their plan and they are sure to go through ________ it.3.He gave her some roses ________ return ________ her kindness.4.They showed little mercy ________ their enemies.5.Primitive man was ________ the mercy ________ his enviroment.6.American people turn off all power for several minutes ________ honour ________ this great inventor.7.Doing morning exercises will be ________ benefit ________ your health.答案:1.of 2.with 3.in; for 4.to 5.at; of 6.in; of 7.of; to Ⅳ.完成句子1.The employee should ________ ________ ________ his great help to the manager.这个雇员帮了经理的大忙,因而应当受到尊敬。
求职虽不易诚实不可弃What's the harm in a little white lie on your résumé, especially if it will help you finally nab that full-time position?Just ask George O'Leary, the Notre Dame football coach who was forced to resign five days after being hired when lies about his academic and athletic background came to light. Or Marilee Jones, an MIT dean who fudged on her credentials and quit when she was found out.Sure, these are high-profile examples, but rank-and-file workers also fall into the trap -- and get caught.Yet with all the uncertainty and anxiety these days over landing a job with a steady paycheck, more job seekers are finding it harder to resist fudging on a résumé or job application in order to paint themselves in the best light.After all, while the unemployment rate remained at a steady 9.7% in March, more than 6.5 million people are still facing long-term unemployment, according to the Department of Labor Statistics. It will be a slog to make a big dent in the nation's unemployment numbers.'It's such a tough spot that many people find themselves in right now with the number of long-term unemployed at historic highs,' says John Challenger, chief executive officer of global outplacement consultancy Challenger, Gray & Christmas. 'It's easy to falsify or embellish beyond a point that would be an ethical representation of your accomplishments.'According to the 2009 Screening Index released by ADP, a human-resources and payroll provider, 46% of employment, education or credential reference checks conducted in 2008 revealed discrepancies. That's up from 41% in 2006.And the current job climate is even riper for résumé fraud, says Jenifer DeLoach, a senior vice president at Kroll, a New York-based global risk consultancy.Crossing the LineThe art of résumé w riting does allow you to push skills to the limit of an imaginary line, says Wendy S. Enelow, an executive career consultant in Coleman Falls, Va. 'It's about merchandising and selling a product. You do want to highlight the benefits and value of that product, but only within the realm of reality.'The hard part, of course, is to avoid crossing that line.Say you're an accountant and spend 80% of your time focusing on accounting and 20% on IT-related work, says Ms. Enelow. If you now want to pursue an IT jo b, you should highlight your skills and qualifications on a résumé in a way that places more emphasis on the IT. 'This way someone sees a qualified IT professional who happened to be an accountant as opposed to the other way around,' she says.Crossing the line would be stating that you 'single-handedly spearheaded the effort to switch from system A to system B' or some other claim to leadership in the IT department, Ms. Enelow adds.Steven Lurie, the author of 'Handbook for Early Career Success,' says he worked with a woman who exaggerated her responsibilities and previous salary when applying for an administrative job at a law firm last year. She got the job. But her exaggerations were discovered during a background check soon after and she was fired.'A lot of companies have zero-tolerance policies if they catch you' lying, says Mr. Challenger.People who didn't complete a degree program can still list the school on a résumé, but they should indicate the 'strongest possible presentation that is truthful,' such as 'completed 50% of requirements for Bachelor of Science in Business Administration' or 'Bachelor of Arts candidate, anticipate completion in 2011,' says Louise Kursmark, an executive résumé writer and career consultant. Crossing the line would be saying you graduated with that degree.Older job seekers can leave off the years they went to school. Changing the years is lying.Also a no-no: stating that you were part of a mass downsizing when you were actually fired, says Mr. Challenger. But do leave off the reason for leaving a previous job, says Ms. Kursmark.In fact, you want to avoid filling a résumé with too many details, especially personal ones. If you have a black mark -- a stint in jail, a trip to rehab or you've been fired from a previous job -- 'that's something that should be dealt with during an interview,' says Meg Montford, an executive career coach in Kansas City, Mo. If you're asked or it looks like a job offer is imminent, 'you have to be honest,' she says, especially since more companies are doing reference and background checks.ADP says the number of background checks it performed for companies rose 24% in the first quarter from a year earlier.You should be upfront and briefly explain why you parted on negative terms with a former employer, or why you were arrested. 'Don't blame anyone but yourself,' says Ms. Montford. 'And end your story about your situation with what you learned and how that impacts how you work going forward.' Damage ControlWhat if you've already sent out a résuméthat paints a less-than-accurate portrait of your accomplishments?Mr. Challenger says there's no need to call employers you sent a résumé to if you haven't heard back from them.If you have an interview lined up, however, that's the time to clear up any exaggerations. 'You could say something as simple as, 'After I submitted my résumé I realized that this date is wrong and should be this date,'[nbsp ]' says Ms. Montford. 'Or, 'As I looked over my résumé, I realized that this project was more of a team effort rather than an individual responsibility.'[nbsp ]'But if you've told a whopper about where you worked or went to school, it's nearly impossible to recover, Ms. Enelow says. A prospective employer will think: 'You've told me you're a liar. I've got 500 people in line for that job, and how do I know that you won't lie to a client? To a colleague?'If that's the case, Mr. Challenger says, you should move on, fix the mistakes on the résumé and be honest going forward.如果能帮你最终获得这份全职工作,在简历中撒点小谎有什么大碍?问问欧列瑞(George O'Leary)吧。
互换性与技术测量2021学习通课后章节答案期末考试题库2023年1.In a transition fit, what is the relationship of shaft diameter d and holediameter D?. 译:过渡配合中的轴径d与孔径D的关系是怎样的?参考答案:unknown(不一定)2.When a micrometer is to be stored, the space between its anvils should be( ). 译:千分尺存放时,两测砧间距应该怎样?参考答案:separated with gap(留有间隔)3.In an interference fit, what is the relationship of shaft diameter d and holediameter D?. 译:过盈配合中的轴径d与孔径D的关系是怎样的?参考答案:d > D4.The drawing requires the accuracy of angle α between ( ) .译:该图约束哪两个要素的夹角α?参考答案:the inclined surface to the axis of Φd shaft(斜面与Φd的轴线)5. A randomly chosen component assembles properly and satisfiesfunctionality without additional fitting. What ability does it have? 译:随机选取的零件无需额外加工便能顺利装配且满足功能要求,则该零件具有( )参考答案:interchangeability6.The smaller standard deviation means the better ( )? 译:标准差越小表明下面哪项水平越高?参考答案:precision7.Tossing a coin for 100 times, the head likely occurs 50 times. It obeys the lawof ( ). 译:一枚硬币抛100次,正面出现大约50次。
CHAPTER 1 GLOBALIZATION AND THE MULTINATIONAL FIRMSUGGESTED ANSWERS TO END-OF-CHAPTER QUESTIONSQUESTIONS1. Why is it important to study international financial management?Answer:We are now living in a world where all the major economic functions, i。
e., consumption, production,and investment, are highly globalized. It is thus essential for financial managers to fully understand vital international dimensions of financial management. This global shift is in marked contrast to a situation that existed when the authors of this book were learning finance some twenty years ago. At that time,most professors customarily (and safely, to some extent)ignored international aspects of finance。
This mode of operation has become untenable since then.2. How is international financial management different from domestic financial management?Answer: There are three major dimensions that set apart international finance from domestic finance. They are:1。
What are the benefits of Zero Position Tolerance at MMC?
Zero Position tolerance at MMC is a method of tolerancing part features that includes the
position tolerance value with the FOS (Feature of Size) tolerance and states a zero
position tolerance at MMC in the feature control frame. Three benefits of zero tolerance
at MMC are:
1. Increase size tolerance.
2. Prevent the rejection of usable parts
3. Reduce manufacturing costs.
Fig. 5-10 shows a drawing of the same part (Fig. 5-9) with a zero positional tolerance at
MMC specified. Note that the maximum size limit of the clearance holes remains the
same but the minimum was adjusted to correspond with a 14 mm diameter fastener. This
results in an increase in the size tolerance for the clearance holes, the increase being equal
to the conventional positional tolerance specified in Fig. 5-9. Although the positional
tolerance specified allowed is in direst proportion to the actual clearance hole size as
shown by the following tabulation. (Y14.5M 5.3.3.1)
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