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GD&T課程內(nèi)容
一、GD&T簡介 GD&T history introduction.
二、GD&T的定義與理解 GD&T definition.
圖形語言 Symbol Language;
GD&T與尺寸公差對比的優(yōu)點(diǎn) GD&T vs. Size dimension.
57% larger in the tolerance zone;
矩形公差帶 the tolerance zone shape (round and square);
檢測者和加工者對設(shè)計(jì)者的解析唯一性 Designer, inspector and manufacturer have the same explanation on the drawing;
基準(zhǔn)的順序性 The sequence of datums setting;
表達(dá)的完整和簡練性 To be easy in definition on Odds shape;
學(xué)員問題 Q&A;
三、GD&T的基本符號(hào) GD&T symbols.
GD&T的公差控制符號(hào) GD&T tolerance controlling symbols.
參考基準(zhǔn)類 for related features;
不參考基準(zhǔn)類 for individual features;
可以參考或不參考基準(zhǔn)類 for individual or related features;
哪些是常用公差控制,不推薦使用公差控制 the popular tolerance control and recommending;
GD&T的修正符號(hào) GD&T modification symbols.
公差修正的重要性 the important of the modification symbol;
常用MMC, LMC and RFS , Introduction of MMC, LMC and RFS;
公差控制框的正確讀法,Tolerance frame grammar.
順序性 the sequence of reading;
基準(zhǔn)的順序 the sequence of reading;
公差控制框的應(yīng)用 the application of the tolerance frame;
課堂小組習(xí)題 exercises;
四、基準(zhǔn) datum.
基準(zhǔn)的定義及理解 datum define and understanding
基準(zhǔn)簡介及零件的定位方法 the datum theory
基準(zhǔn)如何建立 the datum set up
基準(zhǔn)的要素 (5個(gè)要素的討論,解析) the datum elements
基準(zhǔn)的選擇 the datum selection
聯(lián)合基準(zhǔn) the union datum
PLP主定位點(diǎn) PLP principle
************定位 ************ rules
************小組習(xí)題 ************ exercises
五、無基準(zhǔn)參考類公差----形狀公差 Form control.
直線度 straightness.
對直線度的控制方法解析,公差帶形狀 the straightness control methods and tolerance zones;
***中心軸控制時(shí),最大實(shí)體尺寸修正時(shí)的特例影響 When controls the central line, the MMC and LMC condition;
第一法則的應(yīng)用,計(jì)算 GD&T;
平面度 Flatness.
公差帶的不同情況解析 The tolerance zones in different conditions;
應(yīng)用于主基準(zhǔn)的定義 the application of flatness;
圓度 circularity.
圓度的公差帶解析 circularity tolerance zones;
圓度的測量困難性,成本高(時(shí)間,設(shè)備)和錯(cuò)誤的測量方式 the most difficult inspection control;
柱面度 cylindricity.
公差帶解析 cylindricity tolerance zone;
測量的設(shè)置方式,V型塊的誤解 the measurement setup and V block shortage;
最難的測量公差控制方式 the most inspection control;
不推薦使用,可替代的其他控制 Circularity vs. Position, profile and concentricity;
六、可參考基準(zhǔn),也可獨(dú)立應(yīng)用類 the individual or related tolerance control.
線輪廓 line profile.
線輪廓度的公差帶 the tolerance zones;
要素 the importance of the profile elements;
等邊及雙邊公差帶 bilateral and non-bilateral tolerance;
***組合公差框的解析 the composition tolerance frames;
面輪廓度 the surface profile.
公差帶 tolerance zones;
不同點(diǎn) the differences between surface and line profile;
難點(diǎn):組合公差框的解析 the composition tolerance frames;
與平面度的對比 the comparison with flatness;
沒有基準(zhǔn)情況下的應(yīng)用 the application without datums;
尺寸公差下的特殊情況 size tolerance and profile control;
復(fù)雜實(shí)例分析 the complex application;
學(xué)員的準(zhǔn)備圖紙進(jìn)行現(xiàn)場講解 the exercises;
七、必須參考基準(zhǔn)類 the related tolerance control.
方向定位 orientation control.
傾斜度 angularity.
公差帶 tolerance zones;
應(yīng)用要素 the important elements;
檢測方式 the measurement setup;
垂直度 perpendicularity.
公差帶在不同情況下的變化 the tolerance zones;
圖紙默認(rèn)情況下隱含的垂直度 the default perpendicularity spec. in the title block;
平行度 parallelism.
面對基準(zhǔn)軸的情況公差帶解析 plan and datum axile;
特征軸對基準(zhǔn)面的情況公差帶解析 axile and datum plan;
軸對于軸公差帶解析 axile and datum axile;
應(yīng)用要素(6項(xiàng)解析)the elements of application;
八、定位 location.
位置度 position.
實(shí)效邊界的計(jì)算 the virtual condition calibration;
公差補(bǔ)償?shù)挠?jì)算 the allowance tolerance calibration;
一個(gè)公差包含的四個(gè)邊界 the four borders implied by a tolerance;
MMC, RFS和LMC的應(yīng)用及對比 MMC vs. RFS and LMC;
兩種尺寸的應(yīng)用對比 (PPK分析)the dimension definition comparison;
分組計(jì)算MMC(外部特征,內(nèi)部特征)the calibration of MMC;
零位置度應(yīng)用 the zero position definition;
投影公差 the project tolerance;
基準(zhǔn)尺寸的計(jì)算 the calibration of datum pins;
簡單檢具設(shè)計(jì) the gauge design;
RFS的特例情況 RFS application;
陣特征解析 the pattern features application;
組合公差框 the composition tolerance frames application;
互動(dòng)題目 exercises;
同心度 concentricity.
同心度的公差帶 tolerance zones;
同心度的要素 the elements;
對稱度的定義、要求及應(yīng)用 application of symmetry.
跳動(dòng) runout.
圓跳動(dòng) circular runout;
? 要素 elements
? 檢測設(shè)置 the measurement setup
? 不同的控制公差帶 the tolerance zones
全跳動(dòng) total runout;
? 要素 elements
? 檢測設(shè)置 the measurement setup
? 不同的控制公差帶 the tolerance zones
九、綜合應(yīng)用 the advanced application.
檢具銷的計(jì)算 the gauge pin design.
止通規(guī),螺紋孔規(guī) the Go-Nogo pins and Thread pins;
匹配公差的計(jì)算1 the match installation 1.
小組練習(xí);
匹配公差的計(jì)算2 the match installation 2.
小組練習(xí);
檢具設(shè)計(jì)實(shí)例 the gauge design.
小組練習(xí);
直接公差與間接公差的比較 the direct and un-direct tolerance application.
小組練習(xí);
4種情況下的基準(zhǔn)銷計(jì)算 the datum pins design.
尺寸公差與形位公差的轉(zhuǎn)換實(shí)例 the conversation of size tolerance and GD&T.
零位置度公差的應(yīng)用 the zero tolerance control application.
形位公差的法則一計(jì)算 the GD&T rule 1.
復(fù)雜檢具設(shè)計(jì)一 the complex tools design 1.
復(fù)雜檢具設(shè)計(jì)二 the complex tools design 2.