钣金冲压件质量要求

DKBA 华为技术有限公司内部技术规范华为技术有限公司内部技术规范 DKBA0 450 0040 REV C 钣金冲压件质量要求钣金冲压件质量要求 Specification For Sheet metal Punching Part 2012年07月30日发布 20012年09月1日实施 华为技术有限公司 Huawei Technologies Co Ltd 版权所有 侵权必究 All rights reserved 密级 秘密 DKBA 2020 4 10 华为机密 未经许可不得扩散 Huawei Confidential第2页 共44页 Page 2 Total 44 修订声明Revision declaration 本规范拟制与解释部门 整机工程部基础平台部 本规范的相关系列规范或文件 无 相关国际规范或文件一致性 无 替代或作废的其它规范或文件 无 相关规范或文件的相互关系 无 规范号规范号 主要起草主要起草 部门专家部门专家 主要评审部门专家主要评审部门专家修订情况修订情况 DKBA0 450 0040 REV C 基础平台部 潘建军 00118387 肖春秀 00053994 整机工程部 郭天次 0014571 许志敏 00114402 黄涛 00121968 张 实 00118600 钟宏辉 00121959 张润孝 00049797 MQE 陈亮 00068994 SQE 王进 00151357 1 增加了自铆质量要求 2 刷新了钣金件公差要求 DKBA0 450 0040 REV B 质量成本管理部 肖春秀53994 整机工程部 周伟 00123276 郑玲 00119690 李俊周 00123308 魏华 00102167 杨曦晨 00152131 和永超 57041 MQE 曾松来00125372 TQC 马宝兴39736 CEG 郑连东 00114949 1 将外观表面的定义引用于 DKBA0 400 0021 2 增加了翻边攻丝的质量要求 DKBA0 450 0040 REV1 0 质量成本管理部 肖春秀53994 质量成本管理部 盛辉21628 周伟16271 结构平台开发部 郑玲15593 MQE 陈军17658 TQC 马宝兴39736 新归档 密级 秘密 DKBA 2020 4 10 华为机密 未经许可不得扩散 Huawei Confidential第3页 共44页 Page 3 Total 44 目目 录录 1 1 技术要求技术要求 6 6 1 1 1 1 外观及表面状态一般要求外观及表面状态一般要求 6 1 1 1 零件的毛刺面朝向要求 6 1 1 2 冲裁类平板零件圆角要求 6 1 1 3 零件上止裂孔 工艺槽要求 7 1 1 4 弯曲零件未注圆角R要求 7 1 1 5 翻边攻丝质量要求 8 1 1 6 自铆质量要求 9 1 1 7 零件表面的外观要求 10 1 2 1 2 钣金冲压件毛刺的要求钣金冲压件毛刺的要求 10 1 2 1 毛刺的高度定义 10 1 2 2 结构件的毛刺区域分类 10 1 2 3 钣金冲压件毛刺质量要求 14 1 2 4 钣金冲压件的熔渣要求 15 1 2 5 钣金冲压件的接刀痕的要求 15 1 3 1 3 钣金冲压件公差要求钣金冲压件公差要求 15 1 3 1 公差要求 15 1 3 2 钣金件冲压公差等级代号及数值 16 1 3 3 其它说明 20 2 2 检验规则检验规则 2121 2 1 2 1 检验类别检验类别 21 2 1 1 一般检验 21 2 1 2 补充检验 21 2 2 2 2 检验原则检验原则 21 2 3 2 3 检验规定检验规定 21 图目录图目录 图 1 折弯件毛刺方向示意图 6 图 2 平板件的尖角示意图 6 图 3 止裂孔直径示意图 7 密级 秘密 DKBA 2020 4 10 华为机密 未经许可不得扩散 Huawei Confidential第4页 共44页 Page 4 Total 44 图 4 工艺槽口示意图 7 图 5 翻边攻丝示意图 8 图 6 薄板连接用带锥台翻边攻丝孔结构示意图 8 图 7 自铆连接示意图 9 图 8 钣金件毛刺示意图 10 图 9 户外机柜类A B类区域判断示意图 12 图 10 室内机柜类A B类区域判断示意图 13 图 11 插箱类A B类区域判断示意图 13 图 12 拉手条及面板等小五金类A B类区域判断示意图 14 图 13 盒式类A B类区域判断示意图 14 图 14 倒角高度示意图 15 表目录表目录 表 1 平板件圆角半径r r值 6 表 2 普通翻边高度H值和螺纹最少反复打入次数 8 表 3 薄板连接用带锥台翻边攻丝孔翻边高度H值和螺纹最少反复打入次数 9 表 4 自铆参数表 9 表 5 自铆连接点最小承力表 9 表 6 毛刺高度的极限值 15 表 7 钣金公差数值表 16 密级 秘密 DKBA 2020 4 10 华为机密 未经许可不得扩散 Huawei Confidential第5页 共44页 Page 5 Total 44 钣金冲压件质量要求钣金冲压件质量要求 Specification For Sheet metal Punching Part 范范 围围Scope Scope 本规范规定了华为的钣金冲压件 表面处理前 的质量要求 检验规则 本规范适用于华为所有的钣金冲压件 表面处理前 设计图中有注明的要求以设计图为准 图 中未注明的按此规范为准 简简 介介BriefBrief introductionintroduction 规定了钣金冲压件 零件级 的质量要求及检验规则 关键词关键词KeyKey wordswords 外观 表面状态 工艺槽口 圆角半径 A类区域 B类区域 毛刺 毛刺高度 华为技术文件优先级说明 华为技术文件优先级说明 华为产品生产执行的技术文件有 华为图纸 华为企业标准规范 通信设备行业标准 中国国家 标准 国际标准 这些标准的优先级别从高到低依次为 华为图纸 华为企业标准规范 通信设备行 业标准 中国国家标准 国际标准 如果各级文件之间有不一致的地方 应按最高级别的文件执行 在华为企业标准规范中 产品专用标准优先于通用技术标准 术语和定义术语和定义Term and areas specially required in design drawings Class B AreaAreas except for Class A Area BurrBurr on the cross section of finished products when blanking sheet metal Height Of BurrBurr height on the cross section of finished products when blanking sheet metal confidentiality level confidential DKBA 2020 4 10 华为机密 未经许可不得扩散 Huawei Confidential第27页 共44页 Page 27 Total 44 Full SpellingChinese Explanation Level 1 SurfaceCritical surface represents the product appearance Through this kind of decorative surface you can directly see the major product appearance including the outer surface of the front and of the main parts installed on the front of the cabinet subrack involving the integrated chassis and data communications chassis radio frequency module box handle bar and the surface that you can directly see after opening the front door of the cabinet Level 2 SurfaceMajor outer surface is half decorative and is commonly seen including the front of the mount bar on the cabinet sides outside the cabinet rear of the cabinet sides outside and at rear of the subrack involving the integrated chassis and data communications chassis and radio frequency module and topside of the cabinet that is lower than 1 8 m Surfaces of the ironware and accessories of the cabinet and chassis are all defined as level 2 surfaces Level 3 SurfaceMinor outer surface and inner surface These surfaces are not decoration oriented and not demanding on the surface quality including the inner surface and underside of the cabinet subrack involving the integrated chassis and data communications chassis radio frequency module box and handle bar topside of the cabinet that is higher than 1 8m and all surfaces of the installing support bundling rack inner frame and inner solder Surfaces that not belong to level 1 and level 2 surfaces are level 3 surfaces confidentiality level confidential DKBA 2020 4 10 华为机密 未经许可不得扩散 Huawei Confidential第28页 共44页 Page 28 Total 44 1 Technical Requirements 1 1 General Requirements for Appearance and Surface 1 1 1 The burr surface is required to be inside the parts as shown in Error Reference source not found Figure 1 Burr of bends Exceptions the burr surface is the inner surface or non functional surface of parts if the assembling relationship between parts is analyzed based on the coding level the burr surface is the outer surface of parts if L shaped parts are slideways and opposite to the above diagram 1 1 2 Blanked and sheared panel parts taper angles with outer shapes and inner edges smaller than or equal to 90 which are not noted on the drawing should be made as fillets as shown in 0 with a radius r specified as Table 1 Taper angle Taper angle Figure 2 Taper angles of panel parts Table 1 Radius r of taper angle Thickness t 0 3 0 3 0 5 0 5 1 1 2 2 3 3 confidentiality level confidential DKBA 2020 4 10 华为机密 未经许可不得扩散 Huawei Confidential第29页 共44页 Page 29 Total 44 of materials Radius r of taper angle 0 20 30 511 50 5t 1 1 3 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 1 d diameter of stop holes as shown in 0 should be smaller than or equal to 2 t Figure 3 Diameter of stop holes 2 L and b sizes of technical rabbets as shown in 0 When t 0 5 mm 1 mm b 1 5 t if 1 5 t 1 b 1 When t 0 5 mm b 1 mm L t r 0 5b Figure 4 Technical rabbet 1 1 4 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 0 2 1 1 5 Requirements for flanging hole with thread confidentiality level confidential DKBA 2020 4 10 华为机密 未经许可不得扩散 Huawei Confidential第30页 共44页 Page 30 Total 44 1 Requirements for height H and Min removable times of flanging as shown in 05 Figure 5 Schematic diagram for flanging hole with thread Table 2 The data of height H and Min removable times Thread Plate thickness T Inner diameter of flanging hole D1 High of flanging hole H Tolerance 0 0 3 Max R Min removable times Time 0 81 812 1 0230 1 22 230 M3 1 5 2 5 2 430 1 02 430 1 22 630M4 1 5 3 3 330 1 22 430 M5 1 5 4 2 2 7 0 3 30 2 Flanging hole with thread for thin sheet connected The flanging hole is used in thin sheet connected to achieve that standard countersunk head screw M3 could be sunk into the plate surface with thickness 0 8mm or 1 0 mm Requirements for height H and Min removable times of flanging as shown in 06 confidentiality level confidential DKBA 2020 4 10 华为机密 未经许可不得扩散 Huawei Confidential第31页 共44页 Page 31 Total 44 Figure 6 Schematic diagram for flanging hole with thread for thin sheet connected Table 3 The data of height H and Min removable times for flanging hole with thread for thin sheet connected ThreadMaterial Plate thickness T Inner diameter of flanging hole D1 Reference High of flanging hole H Tolerance 0 0 2 Outer diameter of flanging hole D3 Tolerance 0 1 Min removable times Time 1000 6363 160160 400400 1000 1000 Hole diameter 0 1 0 0 15 0 20N AN A 0 1 5 0 20 0 30N AN A Distance between two holes 0 1 0 0 15 0 20 0 25 0 30 0 1 5 0 20 0 30 0 40 0 50 Blanking Distance between a hole and an edge 0 1 0 0 15 0 20 0 25 0 30 0 1 5 0 20 0 30 0 40 0 50 confidentiality level confidential DKBA 2020 4 10 华为机密 未经许可不得扩散 Huawei Confidential第39页 共44页 Page 39 Total 44 Distance between a line and an edge 0 1 0 0 15 0 20 0 25 0 30 0 1 5 0 20 0 30 0 40 0 50 Blanking angle 0 3 0 0 30 0 30 N AN A 1 0 0 30 0 30 N AN A Level f High Precision Level m Average Precision Characteristi c Diameter Distance or Angle Picture 63 63 160 160 400400 1000 100 0 6363 160160 400 400 1000 1000 Distance between a hole and a bent flange one bend 0 1 5 0 20 0 20 0 25 0 30 0 2 0 0 30 0 50 0 50 0 50 Distance between a bent flange and a flat edge one bend 0 1 5 0 20 0 20 0 25 0 30 0 2 0 0 30 0 50 0 50 0 50 Distance between two holes 0 2 0 0 25 0 25 0 30 0 40 Forming two bends 0 2 5 0 30 0 50 0 50 0 75 confidentiality level confidential DKBA 2020 4 10 华为机密 未经许可不得扩散 Huawei Confidential第40页 共44页 Page 40 Total 44 Characteristi c Diameter Distance or Angle Picture Level f High Precision Level m Average Precision 63 63 160 160 400400 1000 100 0 6363 160160 400 400 1000 1000 Distance between two bent flanges two bends 0 1 5 0 20 0 20 0 25 0 30 0 2 5 0 30 0 50 0 50 0 75 Distance between a flat edge and a bent flange three bends 0 2 0 0 25 0 25 0 30 0 40 0 3 0 0 40 0 50 0 75 1 00 Distance between two bent flanges four bends 0 2 5 0 30 0 30 0 40 0 50 0 3 0 0 40 0 50 0 75 1 00 Distance between two holes 0 2 0 0 25 0 25 0 30 0 40 four bends 0 3 0 0 40 0 50 0 75 1 00 confidentiality level confidential DKBA 2020 4 10 华为机密 未经许可不得扩散 Huawei Confidential第41页 共44页 Page 41 Total 44 Level f High Precision Level m Average Precision Characteristic Diameter Distance or Angle Picture 6363 160 160 400 400 1000 100 0 63 63 160 160 400 400 1000 1000 Distance between two flat edges four bends 0 20 0 25 0 25 0 30 0 40 0 30 0 40 0 50 0 75 1 00 Partial forming 1010 2525 63N AN A 1010 2525 63N AN A Height 0 15 0 20 0 30N AN A 0 20 0 30 0 50N AN A Partial forming Length 0 15 0 20 0 20 0 25 0 30 0 20 0 30 0 50 0 75 1 00 Length of a blank holding surface zero gap 0 15N AN AN AN A 0 30N AN AN AN A Depth of a blank holding joint zero gap 0 20 3 0 N AN AN AN A 0 N AN AN AN A Depth of a blank holding joint with gap Forming 0 20N AN AN AN A 0 30N AN AN AN A confidentiality level confidential DKBA 2020 4 10 华为机密 未经许可不得扩散 Huawei Confidential第42页 共44页 Page 42 Total 44 Characteristic Diameter Distance or Angle Picture Level f High Precision Level m Average Precision 6363 160 160 400 400 1000 100 0 63 63 160 160 400 400 1000 1000 Bending angle 0 5 0 5 0 5 0 5 0 5 1 0 1 0 1 0 1 0 1 0 Level f High Precision Level m Average Precision Characteristi c Diameter Distance or Angle Picture 6363 160160 400400 1000 1000 6363 160160 400400 1000 1000 Size of a free of painting area 1 0 1 5 1 5 1 5 2 0 1 0 1 5 1 5 1 5 2 0 Length of a silk screen 0 5 0 5 0 5 0 5N A 0 5 0 5 0 5 0 5N A Flatness with little blanking processes 0 30 50 81 530 50 81 535 Flatness Others with forming welding and piercing 0 50 81 5350 81 5357 confidentiality level confidential DKBA 2020 4 10 华为机密 未经许可不得扩散 Huawei Confidential第43页 共44页 Page 43 Total 44 Characteristi c Diameter Distance or Angle Picture Level f High Precision Level m Average Precision 6363 160160 400400 1000 1000 6363 160160 400400 1000 1000 processes NOTE The table applies only to metal sheets with depths less than or equal to 1 5 mm For metal sheets with greater depths the tolerances increase by around 30 The table applies only to common metal sheets such as cold rolled sheets and galvanized sheets Spring sheets allow larger tolerances Size tolerances for high density holes ventilation holes can be larger than blanking tolerances For tolerances for imprinted marks imprinted words ribs line bridges embossments knock off holes and shutters see the tolerances for partial forming in the table Size tolerances for rivet nuts studs or screws are 0 05 larger than those for hole sizes Size segments of tolerances marked with correspond to the lengths of the shorter blanking flange and bent flange Tolerances marked with are adjusted based the process sequence bending first and piercing later and can be the distance between two holes Size segments of tolerances marked with correspond to the length of the longest diagonal line on a surface Straightness tolerances equal the flatness tolerances If more than four bends are applied tolerance for each additional bend increases by 0 05 Tolerances for listed characteristics in the table apply to similar unlisted characteristics 1 3 3 Remarks The sizes diameters and distances and their tolerances apply to finished metal sheets that have undergone surface processing such as passivation oxidation plating and painting confidentiality level confidential DKBA 2020 4 10 华为机密 未经许可不得扩散 Huawei Confidential第44页 共44页 Page 44 Total 44 2 Inspection Rule 2 1 Inspection Category 2 1 1 General Inspection General inspection involves appearance checks size and allowance tests and regular performance tests for sheet metals according to design and technical documents Appearance checks confirm the sheet metal punching parts by touch visual assessment illumination and reflection and illumination and projectio