《裝配圖的表達(dá)方法》ppt課件

1、 All the above-mentioned representations are applied to the assembly drawing, including views, sectional views, cuts, and simplified representations. 前面所引見(jiàn)的各種表達(dá)方法均適用于裝配圖，包前面所引見(jiàn)的各種表達(dá)方法均適用于裝配圖，包括：視圖、剖視、斷面、簡(jiǎn)化畫法等。括：視圖、剖視、斷面、簡(jiǎn)化畫法等。 Section lines in two contiguous metal parts must be in opposite direction

2、s or unequally spaced, while section lines of the same part must be consistent in different views. 兩個(gè)相鄰金屬零兩個(gè)相鄰金屬零件的剖面線應(yīng)方向相反或間距不同，而同一零件的剖面線在各件的剖面線應(yīng)方向相反或間距不同，而同一零件的剖面線在各個(gè)視圖中應(yīng)堅(jiān)持一致。個(gè)視圖中應(yīng)堅(jiān)持一致。2. Representing contact surfaces and fitting surfaces of two parts. 零件接觸面與配合面的畫法零件接觸面與配合面的畫法1. Representing secti

3、on lines 剖面線的畫法剖面線的畫法3. Representing fastening pieces and solid pieces緊固件及實(shí)心件畫法緊固件及實(shí)心件畫法 If the structure of a certain part is not clearly If the structure of a certain part is not clearly represented and will thus affect the understanding represented and will thus affect the understanding of its fi

4、tting relationship and function, the part of its fitting relationship and function, the part must be drawn separately and marked with must be drawn separately and marked with “xx xx directiondirection near the corresponding view indicating near the corresponding view indicating with arrows and capit

5、al letters the projection with arrows and capital letters the projection direction. direction. 當(dāng)某個(gè)零件的構(gòu)造未表達(dá)清楚，且對(duì)了解配置關(guān)系當(dāng)某個(gè)零件的構(gòu)造未表達(dá)清楚，且對(duì)了解配置關(guān)系或部件功能有影響時(shí)或部件功能有影響時(shí), , 應(yīng)單獨(dú)畫出該零件應(yīng)單獨(dú)畫出該零件, , 并在其上方注并在其上方注明明 “零件零件, , 在相應(yīng)視圖附近用箭頭指明投射方向在相應(yīng)視圖附近用箭頭指明投射方向, , 并并注明相應(yīng)的大寫字母。注明相應(yīng)的大寫字母。 To represent the internal details of

6、 a machine or assembly, we can represent some parts as a cutaway drawing along the fitting surface. In this representation, the section lines of the fitting surface are not needed, but the section lines of parts that pass through the fitting surface are needed. 為了表達(dá)機(jī)器或部件的內(nèi)部構(gòu)造，可采用沿某些零件為了表達(dá)機(jī)器或部件的內(nèi)部構(gòu)造，

7、可采用沿某些零件的結(jié)合面剖切的畫法，其特點(diǎn)是在結(jié)合面上不畫剖面線，的結(jié)合面剖切的畫法，其特點(diǎn)是在結(jié)合面上不畫剖面線，但穿過(guò)該結(jié)合面的其他零件，應(yīng)按剖視畫。但穿過(guò)該結(jié)合面的其他零件，應(yīng)按剖視畫。 If the fitting relationship or other parts to be represented are behind some other parts, one may assume that the interfering parts are removed, and then clearly draw the parts to be represented. Make su

8、re to represent the removed part in other views and mark it as removed xx. 當(dāng)某些零件遮住了要表達(dá)的裝配關(guān)系或其他當(dāng)某些零件遮住了要表達(dá)的裝配關(guān)系或其他零件時(shí)，可假想將這些零件拆去后，再畫出欲表達(dá)部分的視零件時(shí)，可假想將這些零件拆去后，再畫出欲表達(dá)部分的視圖，但被拆去的零件必需在其他視圖中已表達(dá)清楚，并應(yīng)在圖，但被拆去的零件必需在其他視圖中已表達(dá)清楚，并應(yīng)在其上方注明其上方注明 “拆去拆去件字樣。件字樣。 1. Representation of standard components 規(guī)范產(chǎn)品畫法規(guī)范產(chǎn)品畫法 If a

9、 cut plane goes through an axis or a symmetry line of standard components, they can be drawn as if they were not cut away. 當(dāng)剖切平面經(jīng)過(guò)規(guī)范產(chǎn)品的軸當(dāng)剖切平面經(jīng)過(guò)規(guī)范產(chǎn)品的軸線或?qū)ΨQ中心線時(shí)，可按不剖畫出其外形。線或?qū)ΨQ中心線時(shí)，可按不剖畫出其外形。2. Representation of multiple threaded joints and assemblies螺紋聯(lián)接件畫法螺紋聯(lián)接件畫法 If there are several groups of threade

10、d part joints, one only needs to draw one of them and represent the others in the assembly drawing with center lines. 有假設(shè)干組一樣螺紋聯(lián)接件有假設(shè)干組一樣螺紋聯(lián)接件時(shí)，可僅詳細(xì)畫出其中一組，其他只在其裝配位置用點(diǎn)畫線表時(shí)，可僅詳細(xì)畫出其中一組，其他只在其裝配位置用點(diǎn)畫線表示示. In assembly drawings, certain technical structures, such as round, chamfer, and undercut can be omitted. 對(duì)零件的工藝構(gòu)對(duì)零件的工藝構(gòu)造，如小圓角、倒角、退刀槽等可省略不畫。造，如小圓角、倒角、退刀槽等可省略不畫。 3. Representation of technical structures of parts 零件的工藝構(gòu)造畫法零件的工藝構(gòu)造畫法本 小 節(jié) 結(jié) 束Axonometr