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1、DKBA華為技術(shù)有限公司企業(yè)技術(shù)規(guī)范DKBA4031-2003.06鈑金結(jié)構(gòu)件可加工性設(shè)計(jì)規(guī)范2003-06-30發(fā)布2003-07-XX實(shí)施華為技術(shù)有限公司發(fā)布密級(jí):內(nèi)部公開(kāi)/秘密DKBAXXXX.X-2002.XX目次前言..............................................................51范圍和簡(jiǎn)介.........................................................61.1范圍.............
2、....................................61.2簡(jiǎn)介.................................................61.3關(guān)鍵詞...............................................62規(guī)范性引用文件.....................................................63沖裁...............................................
3、................63.1沖裁件的形狀和尺寸盡可能簡(jiǎn)單對(duì)稱,使排樣時(shí)廢料最少。.63.2沖裁件的外形及內(nèi)孔應(yīng)避免尖角。.......................63.3沖裁件應(yīng)避免窄長(zhǎng)的懸臂與狹槽.........................73.4沖孔優(yōu)先選用圓形孔,沖孔有最小尺寸要求...............73.5沖裁的孔間距與孔邊距.................................83.6折彎件及拉深件沖孔時(shí),其孔壁與直壁之間應(yīng)保持一定的距離83.7螺釘、螺栓的
4、過(guò)孔和沉頭座.............................83.8沖裁件毛刺的極限值及設(shè)計(jì)標(biāo)注.........................93.8.1沖裁件毛刺的極限值...............................93.8.2設(shè)計(jì)圖紙中毛刺的標(biāo)注要求.........................94折彎..............................................................104.1折彎件的最小彎曲半徑..........
5、......................104.2彎曲件的直邊高度....................................104.2.1一般情況下的最小直邊高度要求....................102006-09-07,08:34:182密級(jí):內(nèi)部公開(kāi)/秘密DKBAXXXX.X-2002.XX4.2.2特殊要求的直邊高度..............................114.2.3彎邊側(cè)邊帶有斜角的直邊高度......................114.3折彎件上的
6、孔邊距....................................114.4局部彎曲的工藝切口..................................124.4.1折彎件的彎曲線應(yīng)避開(kāi)尺寸突變的位置..............124.4.2當(dāng)孔位于折彎變形區(qū)內(nèi),所采取的切口形式..........124.5帶斜邊的折彎邊應(yīng)避開(kāi)變形區(qū)..........................134.6打死邊的設(shè)計(jì)要求....................................134.
7、7設(shè)計(jì)時(shí)添加的工藝定位孔..............................134.8標(biāo)注彎曲件相關(guān)尺寸時(shí),要考慮工藝性..................144.9彎曲件的回彈........................................144.9.1折彎件的內(nèi)圓角半徑與板厚之比越大,回彈就越大。..144.9.2從設(shè)計(jì)上抑制回彈的方法示例......................145拉伸..............................................
8、................155.1拉伸件底部與直壁之間的圓角半徑大小要求..............155.2拉伸件凸緣與壁之間的圓角半徑........................155.3圓形拉伸件的內(nèi)腔直徑................................155.4矩形拉伸件相鄰兩壁間的圓角半徑......................155.5圓形無(wú)