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BQUQ CNC加工ER32弹簧夹头刀柄 精密跳动5µm

这是一款CNC加工的ER32弹簧夹头刀柄,旨在以鼻端径向跳动≤5µm(0.005mm)的精度夹持您的切削刀具。我们采用20CrMnTi合金钢加工,渗碳处理至表面硬度HRC 58-60,标准规格24小时内发货。如果您需要一款能在12000 RPM下无振颤地夹持1/8英寸立铣刀并保持极高同轴度的刀柄,这就是您应指定的部件。 ER32弹簧夹头机构如何消除刀具滑移 ER32夹头刀柄采用锥形孔(8°夹角


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这是一款CNC加工的ER32弹簧夹头刀柄,旨在以鼻端径向跳动≤5µm(0.005mm)的精度夹持您的切削刀具。我们采用20CrMnTi合金钢加工,渗碳处理至表面硬度HRC 58-60,标准规格24小时内发货。如果您需要一款能在12000 RPM下无振颤地夹持1/8英寸立铣刀并保持极高同轴度的刀柄,这就是您应指定的部件。

ER32弹簧夹头机构如何消除刀具滑移

ER32夹头刀柄采用锥形孔(8°夹角)和螺纹锁紧螺母。当您拧紧螺母时,夹头的12个槽径向压缩,沿其32mm全长均匀夹持刀柄。这不是紧定螺钉式刀柄——它均匀分布夹紧力,这意味着在重负荷粗加工下零刀具拉出。弹簧钢夹头(65Mn)在直径范围内可弹性变形达1mm,因此一个夹头可覆盖2mm至20mm的刀柄。我们将锥度座磨削至AT3级量规精度,这就是即使在10000次插拔循环后跳动仍保持在5µm以下的原因。

材料与热处理:20CrMnTi渗碳至HRC 58-60

我们采用20CrMnTi坯料,而非廉价的45#钢。本体经CNC车削和铣削,然后在920°C下渗碳6小时。这形成0.8-1.2mm的硬化层深度,使锥面能够抵抗夹头摩擦带来的磨损。芯部保持HRC 30-35的韧性,可吸收振动。锁紧螺母采用40Cr,调质处理至HRC 38-42。我们不进行硬铬电镀——直接将锥面磨削至Ra 0.4µm的表面光洁度。这种镜面光洁度可在热运行后释放刀具时减少摩擦。

精密磨削:我们如何实现5µm总跳动

关键步骤是顶尖间的最终外圆磨削。我们首先磨削锥孔,然后将刀柄安装在精密心轴(跳动<1µm)上,磨削外圆刀柄(DIN 69871或BT30/BT40锥度)使其与该孔同心。我们使用分辨率为0.5µm的CMM测头对每件产品进行测量。距鼻端50mm处的总指示跳动(TIR)≤5µm。相比之下,标准DIN 6499刀柄为10-15µm。在0.2mm精加工走刀时,您将感受到表面光洁度的差异。

对您机床主轴至关重要的ER32夹头刀柄规格

参数数值
夹头类型ER32(DIN 6499)
夹持范围2mm – 20mm(0.079" – 0.787")
本体材料20CrMnTi合金钢
表面硬度HRC 58-60(渗碳层深度0.8-1.2mm)
芯部硬度HRC 30-35
锥度精度AT3(DIN 6499)
总跳动(50mm处TIR)≤5µm(0.005mm)
锥面表面光洁度Ra 0.4µm
刀柄选项BT30、BT40、CAT40、HSK63A、32mm直柄
交期(标准规格)24小时
起订量无起订量,接受单件订购

12000 RPM下的平衡与动态性能

我们每只ER32夹头均在12000 RPM下平衡至G2.5等级。这不是可选项——在该转速下,不平衡的刀柄会产生0.5mm的振动幅度,从而缩短刀片寿命。我们在法兰上钻两个平衡校正孔,然后重新测量。最终成品是一款足够平稳的刀柄,适用于高速铝材精加工。如果您运行20000 RPM,请告知我们,我们将免费平衡至G1.0等级。

每次发货前检验:附CMM检测报告

每一只ER32弹簧夹头刀柄都经过12项检测。我们检查锥度接触率(涂蓝检查必须>85%)、锁紧螺母螺纹跳动、洛氏硬度计表面硬度,以及CMM上的最终TIR。您将收到一份带有零件号和日期的打印检测报告。如果锥度接触偏差2%,我们将报废该零件——我们不销售次品。这是精密制造,中国制造,但符合德国DIN标准。

常见问题:规格、定制刀柄及单件订购

最小起订量(MOQ)是多少?

无起订量——我们发一件货,就像发一千件一样,标准BT30/BT40/CAT40选项同样24小时交期。

我可以定制刀柄或特殊锥度长度吗?

可以,我们可在3-5天内加工定制刀柄(如HSK63A、R8或25mm直柄),并在加工前提供3D图纸供您确认。

你们如何保证每件产品5µm的跳动?

我们在CMM上对100%的产品进行检测,并随订单附上每件的跳动报告——如果读数超过5µm,我们自费更换。

100件批量订单的实际交期是多少?

标准ER32夹头24小时内发货;对于100件以上的批量订单,我们备有2周的成品库存,因此交期仍为48小时。

为什么您不应从贸易公司购买铸造或铣削毛坯件

我们是工厂。我们拥有CNC车床(10台,Fanuc系统)、磨床和CMM。您是在与设定公差的工程师对话,而不是与阅读数据表的销售人员对话。这款ER32夹头由实心材料加工而成,而非铸造,因此锥面下方没有隐藏的气孔缺陷。我们的单件价格比德国品牌低15-20%,因为您省去了进口商的加价——但跳动精度相同甚至更优。

将此夹头与正确的刀具和公差配套使用

要充分发挥这款5µm刀柄的性能,请搭配平衡夹头(我们也供应ER32夹头,65Mn弹簧钢,跳动≤3µm)。如果您正在选择硬质合金立铣刀或钻头,请阅读我们的CNC切削刀具选型指南以匹配刀柄公差。关于您可预期的整体零件精度,请参阅我们的CNC加工公差指南——它解释了刀柄跳动如何与您的零件GD&T叠加。

12小时内获得确定报价——无起订量,无推诿

将您的图纸发送给我们,或直接告知您的主轴锥度和刀具刀柄直径。我们将回复确定的价格、交期以及关于ER32是否适合您加工夹紧力的技术建议。发送邮件至sc@bquq.com或WhatsApp +86 13713157787。我们位于东莞,UTC+8时区,12个工作小时内回复。您的首件免费,我们不收取样品报告费用。


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参数

参数能力范围
材料AL6061/7075, SUS303/304/316, 45#钢, T2铜, H59黄铜, POM, PEEK, 尼龙
公差±0.005mm标准,±0.003mm可按需定制
设备3/4/5轴CNC, 车铣复合, 瑞士型车床
表面处理阳极氧化, 镀镍, 镀锌, 钝化, 喷砂, 抛光
尺寸范围最大400 x 300 x 200 mm
打样72小时,样品无最小起订量
检测每批次提供完整报告,可按需提供CMM数据

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