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精密电机铁芯冲压件系列 | BQUQ 中国工厂

这是我们精密电机铁芯冲压件系列:由电工钢冲压而成的平面、叠压或焊接定子和转子铁芯。我们提供±0.01 mm的尺寸公差、低于0.02 mm的叠压跳动,以及130–180 HRB的硬度范围(硬化合金为40–50 HRC)。原型卷料的标准交期为5个工作日,我们从中国东莞发货,首件无起订量。 冲裁后的叠高控制与平面度 当单片厚度不均或毛刺超过0.02 mm时,铁芯叠片会失效。我们的冲压模具研磨至每侧材料


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这是我们精密电机铁芯冲压件系列:由电工钢冲压而成的平面、叠压或焊接定子和转子铁芯。我们提供±0.01 mm的尺寸公差、低于0.02 mm的叠压跳动,以及130–180 HRB的硬度范围(硬化合金为40–50 HRC)。原型卷料的标准交期为5个工作日,我们从中国东莞发货,首件无起订量。

冲裁后的叠高控制与平面度

当单片厚度不均或毛刺超过0.02 mm时,铁芯叠片会失效。我们的冲压模具研磨至每侧材料厚度的4–6%间隙,将毛刺高度控制在0.015 mm以下。随后我们以300 kN的夹紧力压紧叠片,并使用激光测微仪每10个叠片测量一次平面度。若平面度超过每100 mm长度0.05 mm,该叠片将在焊接或铆接前被拒收。

我们使用的电工钢牌号与绝缘涂层

我们常备M470-50A、M350-50A和M250-35A无取向硅钢,以及适用于高频电机的35JN210。涂层选项包括适用于焊接叠片的C5(无机)涂层和适用于胶粘或铆接组件的C6(有机)涂层。对于高速转子,我们还提供0.20 mm和0.27 mm超薄叠片,退火后抗拉强度为450 MPa。如果您需要JFE或新日铁的具体牌号,我们直接采购——无中间商加价。

模具寿命与毛刺方向——对电机的重要性

毛刺方向会改变定子与转子之间的有效气隙,直接影响转矩脉动。我们将所有级进模设置为单一毛刺方向(向下进入模具),并每10万次冲压后重新刃磨冲头。我们的电机铁芯冲压件模具寿命平均为1500万次冲程(两次重磨之间)。即使您订购5万件或500万件,也能获得一致的零件几何形状。

互锁、铆接或焊接——按您的规格组装叠片

我们不仅冲压松散叠片。我们的内部叠压选项包括燕尾互锁(叠高可达200 mm)、通孔铆接和外径激光焊接。对于互锁叠片,我们将压力控制在材料屈服强度的20%,确保互锁凹点不会扭曲槽形轮廓。对于焊接叠片,我们使用2 kW光纤激光器,将热影响区宽度控制在0.3 mm以下。

参数规格/范围
材料牌号M470-50A, M350-50A, M250-35A, 35JN210, 厚度0.20–0.50 mm
叠片直径20 mm – 300 mm(定子外径最大350 mm)
尺寸公差关键槽和孔径尺寸±0.01 mm
叠高公差50 mm以内±0.03 mm,200 mm以内±0.05 mm
毛刺高度(最大)0.015 mm(0.0006英寸)
叠片跳动(外径基准)0.02 mm TIR
硬度(冲压态)130–180 HRB;可选硬化后40–50 HRC
表面粗糙度(Ra)切割边缘0.8 µm,平面1.6 µm
标准交期5个工作日(原型),15天(量产)
起订量首件无起订量;量产起订量5,000件

每次发货前检验——硬度、三坐标测量和涡流检测

精密电机铁芯冲压件系列的每批产品均经过三项检查:母卷洛氏硬度测试、首件叠片三坐标扫描,以及2%成品叠片的涡流检测以发现表面裂纹。我们还在装箱单上记录模具编号和卷料炉号。如果您要求,我们会在发货后24小时内发送包含照片的完整检验报告。

二次加工:槽绝缘、退火和动平衡

我们的服务不止于冲压。我们提供定子铁芯槽衬插入(Nomex或Mylar)、750°C真空退火以恢复磁导率,以及符合ISO 1940 G2.5等级的转子平衡。对于外径超过100 mm的转子,我们进行双平面动平衡并在零件上标记不平衡角度。这些步骤为可选项目,但可减少您装配线上的不良品。

精密电机铁芯冲压件系列的最低起订量是多少?

首件无起订量——我们将冲压10件供您进行装配测试,量产起订量为每个零件号5,000件起。

能否定制叠片形状或材料牌号?

可以——将您的图纸(DXF或STEP格式)发送给我们,我们将在3天内修改级进模;我们也可以将钢种更换为您指定的任何新日铁或JFE等效牌号。

大批量订单如何控制质量?

我们每500次冲压对槽宽和孔径进行SPC统计过程控制,并使用视觉系统对每班最后50个叠片进行100%尺寸检查。

冲压叠片的标准交期是多久?

原型叠片5个工作日内发货,量产订单(50,000件以上)在模具批准后15个工作日内发货。

需要不同的公差等级或特殊涂层?请阅读我们的CNC刀具选择指南,了解刀具刃口几何形状如何影响您的冲压边缘,并查看我们的CNC加工公差指南(如果您将叠片与机加工壳体组合使用)。两者都将帮助您为电机项目设定合理的规格范围。

将您的图纸发送至sc@bquq.com或通过WhatsApp联系+86 13713157787。我们将在12小时内返回包含模具费用、单件价格和交货日期的正式报价。精密制造,中国制造,首次试制无起订量——只需发送文件即可。


相关产品

参数

参数能力
材料SPCC、SGCC、SUS301/304/316、黄铜、铜、铍铜、磷青铜
工艺级进模冲压、精冲、深拉深、折弯、攻丝
公差±0.01mm标准,±0.005mm可按要求
表面处理镀锌、镀镍、镀锡、镀金、粉末喷涂、钝化、阳极氧化
模具尺寸最大1200 x 800 mm,16-250吨冲床
厚度0.05 - 6.0 mm板材,线材0.1 - 8.0 mm
打样7-15天模具制作,样品无最小起订量
检测每批次全检报告,CMM和三坐标光学测量

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