【正文】 區(qū)域和B類區(qū)域：A類區(qū)域：在鈑金供應(yīng)商交貨時，產(chǎn)品在正常工作位置手能觸膜到的邊角區(qū)域；以及設(shè)計(jì)圖中特別要求的部位，包括但不限于以下特殊位置：需要過線纜的孔或槽；連接器的安裝孔；有相對滑動的邊角。L≥t+r+圖 4 工藝槽口示意圖. 彎曲零件未注圓角R要求8 / 43當(dāng)圖樣上未注明彎曲半徑時，允許按內(nèi)彎曲半徑R不大于t（t為材料厚）。小五金件、機(jī)柜機(jī)箱附件等均定義為2級表面。術(shù)語和定義Termamp。1 / 43DKBA華為技術(shù)有限公司內(nèi)部技術(shù)規(guī)范 REV C鈑金沖壓件質(zhì)量要求Specification For Sheetmetal Punching Part 2022年07月30日發(fā)布 20222年09月1日實(shí)施華為技術(shù)有限公司Huawei Technologies Co., Ltd.版權(quán)所有 侵權(quán)必究All rights reserved2 / 43修訂聲明Revision declaration本規(guī)范擬制與解釋部門：整機(jī)工程部基礎(chǔ)平臺部本規(guī)范的相關(guān)系列規(guī)范或文件:無相關(guān)國際規(guī)范或文件一致性：無替代或作廢的其它規(guī)范或文件：無相關(guān)規(guī)范或文件的相互關(guān)系：無規(guī)范號 主要起草部門專家 主要評審部門專家 修訂情況 REV C 基礎(chǔ)平臺部：潘建軍（00118387）肖春秀(00053994)整機(jī)工程部：郭天次（0014571）許志敏（00114402），黃濤（00121968）張實(shí)（00118600），鐘宏輝（00121959），張潤孝（00049797）MQE:陳亮（00068994）SQE:王進(jìn)（00151357）增加了自鉚質(zhì)量要求；刷新了鈑金件公差要求。在華為企業(yè)標(biāo)準(zhǔn)規(guī)范中，產(chǎn)品專用標(biāo)準(zhǔn)優(yōu)先于通用技術(shù)標(biāo)準(zhǔn)。主要包6 / 43縮略語 Abbreviations 英文全名 Full spelling中文解釋 Chinese explanation括機(jī)柜方孔條正面、機(jī)柜外部側(cè)面、機(jī)柜后面、插框（包括一體化機(jī)箱和數(shù)通機(jī)箱）、無線射頻模塊的外部側(cè)面和后面及防護(hù)網(wǎng)等處經(jīng)常被打開的可視面等。7 / 43圖 2 平板件的尖角示意圖表 1 平板件圓角半徑r值材料厚度 t ≤ ~ ~1 1~2 2~3 3圓角半徑r≤ 1 . 零件上止裂孔、工藝槽要求當(dāng)設(shè)計(jì)文件或圖樣上注明允許開止裂孔或工藝槽口時，其止裂孔直徑和工藝槽口尺寸，按下列要求選擇：止裂孔直徑d（見圖3）不大于2t； 圖 3 止裂孔直徑示意圖工藝槽口尺寸L和b（見04）；當(dāng)t＞，1mm＜b≤ t （1，則b=1）；當(dāng)t≤，b=1mm。. 鈑金沖壓件毛刺的要求. 毛刺的高度定義毛刺高度是指沖裁后沖件斷面邊緣鋒利的凸起的高度（h），詳見0。表 7 鈑金公差數(shù)值表f 級(精密精度) m 級(中等精度)特征分類尺寸分類 特征示意圖≤63 63~160 160~400 400~1000 1000 ≤63 63~160 160~400 400~1000 1000圓孔直徑　 177。 177?？走吘唷?77。 177。 177。0176。0176。 177。 177。 177。 177。 177。 177。 177。 177。 177。 177。 177。 177。 177。176。176。 177。 177。 ；注示為① 的沖裁角度、折彎角度的尺寸分段分別指相應(yīng)特征沖裁短 邊尺寸、折彎短 邊尺寸數(shù)值分段；注示為② 的公差數(shù) 值根據(jù)工序調(diào)整（先折彎后沖孔）可按沖裁孔間距標(biāo)注公差；注示為③ 的平面度尺寸分段指平面內(nèi)最大對角線長度尺寸分段；直線度公差值可參照上表中的平面度公差值執(zhí)行；對于多于4折的折彎特征，其累積公差按每折加177。 which are not noted on the drawing should be made as fillets (as shown in Figure 2) with a radius (r) specified as Table 1. .................................................................................................................................................28. If allowable as marked in design documents or drawings, stop holes or technical rabbets can be open according to the following hole diameter and rabbet size...............................................................................29. Parts formed by curving without a curving radius noted on the drawing can be made with an internally curving radius R no larger than t (thickness of materials) and no smaller than . ..............................29. Requirements for flanginghole with thread： .................................................................................29. Requirements for Riveting Quality ...................................................................................................31. Exterior Requirements of parts.........................................................................................................32. REQUIREMENTS FOR THE BURR OF SHEETMETAL PUNCHING PARTS .........................................................................32. Definition of Burr Height： ..............................................................................................................32. Classifications of burr areas of structural parts ..............................................................................33. Requirements for the burr quality of sheetmetal punching parts....................................................36. Requirements for the Slag of SheetMetal Punching Parts ..............................................................37. Requirements for Tool Withdrawal Marks on SheetMetal Punching Parts....................................37. TOLERANCE REQUIREMENTS OF SHEETMETAL PUNCHING PARTS..............................................................................38. Statement...........................................................................................................................................38 TOLERANCES IN DRAWINGS, IF SPECIFIED, SHALL ALWAYS PREVAIL. ................................................................................38. Tolerance Levels and Values ............................................................................................................38Tolerance levels are classified into f and m. f allows lower tolerances than m...............................................38. Remarks ............................................................................................................................................432. INSPECTION RULE........................................................44. INSPECTION CATEGORY .....................................................................................................................................................44. General Inspection............................................................................................................................4423 / 43. Supplementary Inspection.................................................................................................................44. INSPECTION RULES.............................................................................................................................................................44. INSPECTION PROVISIONS ....................................................................................................................................................442. FiguresFigure 1 Burr of bends......................................................28Figure 2 Taper angles of panel parts ...........................................28Figure 3 Diameter of stop holes ..............................................29Figure 4 Technical rabbet ...................................................29Figure 5 Schematic diagram for flanginghole with thread .........................30Figure 6 Schematic diagram for flanginghole with thread for thin sheet connected......31Figure 7 Riveting procedure .................................................32Figure 8 Burr height of sheetmetal structural parts ............................