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BQUQ CNC加工自动车床25型夹头(三角棒料专用)

此夹头功能:以0.005 mm跳动夹持三角棒料 这是一款25型夹头卡盘,经CNC加工,适用于送三角棒料的自动车床。其夹持棒料的同心度在鼻端测量为0.005 mm(0.0002英寸),夹持力重复精度在10,000次循环内为±0.003 mm。您可直接从我们的东莞工厂获得此精度——无第三方精加工,无返工。夹持面硬度为58–60 HRC,这意味着它能抵抗磨蚀性六角或三角棒料的磨损,在可测量的内径变化


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此夹头功能:以0.005 mm跳动夹持三角棒料

这是一款25型夹头卡盘,经CNC加工,适用于送三角棒料的自动车床。其夹持棒料的同心度在鼻端测量为0.005 mm(0.0002英寸),夹持力重复精度在10,000次循环内为±0.003 mm。您可直接从我们的东莞工厂获得此精度——无第三方精加工,无返工。夹持面硬度为58–60 HRC,这意味着它能抵抗磨蚀性六角或三角棒料的磨损,在可测量的内径变化前可承受超过500,000次分度循环。

标准尺寸的夹头,我们现货供应,3–5天内发货。定制内孔轮廓的交货期为7–10天。这是一款生产工具,而非实验室样品——它能在您的生产车间以最高6,000 RPM运行,25系列的夹持范围为±0.1 mm。

为何三角棒料需要磨削而非车削的内孔

三角棒料(三面棒材)具有尖角,在圆形夹头内孔中形成点接触。如果内孔仅为车削加工,这些尖角会不均匀地嵌入,导致振动和零件圆度偏差。我们的25型夹头具有全磨削内孔——我们在热处理后而非热处理前磨削内部轮廓。磨削工序去除0.15 mm材料,消除了热处理变形。最终圆度为0.002 mm。内孔还带有0.2 mm × 45°引导倒角,使三角棒料顺畅送入而不会卡在边缘。

针对三角棒料,我们采用3槽设计(而非常见的4槽)。三个槽使夹头能围绕三个角均匀收缩,以120°间隔分布夹持力。这与瑞士型车床加工六角棒料所用的几何结构相同。槽宽为1.5 mm,根部带有0.5 mm半径以防止应力裂纹。您不会在标准目录夹头上看到这一细节——它是专为三角棒料加工设计的。

材料与热处理:8620渗碳钢,而非整体淬硬钢

夹头本体采用AISI 8620合金钢。这是一种渗碳钢等级,而非弹簧钢。芯部保持32–36 HRC的韧性,可吸收夹头闭合在略大棒料上时的冲击。表层渗碳深度为0.8–1.0 mm,硬化至58–60 HRC。这种组合提供了坚硬的耐磨表面,同时不会使夹头变脆——整体淬硬至60 HRC的夹头在首次碰撞时就会崩裂。

夹持部分不仅经过硬化处理,还在磨削后进行氮化处理。氮化层增加0.05 mm深度,等效硬度为65 HRC,降低了与棒料的摩擦。这意味着在铝和不锈钢三角棒料上更少出现咬粘现象。对于螺纹(拉杆端M24 × 1.5),我们将其保持在28–32 HRC——足够硬以抵抗滑丝,又足够软以避免拉管磨损。

我们不为该产品使用涂层夹头。涂层(TiN等)会增加0.005 mm厚度,破坏25型夹头的精密配合。如果您需要更长的磨损寿命,我们可以添加轻质DLC涂层,但仅限定制要求——它会改变内孔尺寸0.003 mm,我们会在磨削中进行补偿。

每次发货前检验:气动量仪 + 光学投影仪

每一件25型夹头在离开我们东莞工厂前都经过12点检验。我们不抽样——我们100%测量所有零件。关键检查项目包括:内孔直径(气动量仪,分辨率0.001 mm)、跳动(精密芯轴上的TIR,最大0.005 mm)、槽宽(光学投影仪,±0.02 mm)和硬度(洛氏C标尺,在夹持面上测量,而非本体)。

我们还在实际自动车床上进行功能测试——安装夹头,送入25 mm三角棒料,加工一个测试零件。测试零件经过圆度和表面光洁度测量。如果测试零件超出规格,该夹头将被拒收,而非返工。测试失败后的返工意味着磨削工艺有误,我们不会出售修正后的废品。每个夹头在端面刻有序列号,我们保留检验记录5年。您可以将夹头追溯到热处理批次和磨削操作员。

规格表:25型三角棒料夹头

参数数值备注
材料AISI 8620渗碳钢芯部32–36 HRC
表面硬度58–60 HRC(渗碳层)另加氮化层,等效65 HRC
内孔直径(标准)25.4 mm(1.000英寸)可定制20–30 mm
跳动(TIR)最大0.005 mm在鼻端芯轴上测量
内孔圆度0.002 mm磨削后、氮化前
内孔表面光洁度Ra 0.4 µm磨削表面,无需研磨
夹持范围标称值±0.1 mm仅适用于三角棒料
最大转速6,00025系列已做动平衡
槽设计3槽,宽1.5 mm根部半径0.5 mm
交货期(标准尺寸)3–5天定制内孔:7–10天
起订量无起订量可订购1件进行测试

如何将此夹头与您的自动车床拉管匹配

25型夹头使用标准拉回螺纹——后端为M24 × 1.5。但螺纹长度和锥角(30°包含角,符合DIN 6343)必须与您的拉管匹配。如果您的拉管锥角不同,夹头将无法完全就位,跳动将超过0.01 mm。订购前请用量规测量拉管锥角。我们销售配套测试量规(零件号BQ-25TAP),价格18美元——这是一个具有精确30°角的淬硬钢塞规。这不是推销手段;它可以防止安装不对中。

对于三角棒料本身,我们建议棒料公差为h9(25 mm棒料为0至-0.052 mm)。如果您的棒料为h11,夹头仍可夹持,但夹持范围缩小至±0.05 mm。如果您的棒料超出这些公差,请告知我们实际测量尺寸——我们可以将内孔磨小0.01 mm,让夹头略微张开。但我们不会将内孔做大,因为那会使夹头在角部失去夹持力。

常见问题:尺寸、定制内孔及“无起订量”对您的意义

我可以只订购一件夹头进行试运行吗?

可以——该产品无起订量。您可以订购单件在机器上测试,单件价格不会增加,除非您的订购量低于我们的最小批次成本。

你们是否制作非标三角棒料的定制内孔尺寸?

我们磨削20 mm至30 mm的定制内孔,以0.1 mm为增量;请将您的棒料图纸(含圆角半径和公差)发送给我们,我们将在24小时内确认内孔尺寸。

你们如何保证生产夹头的0.005 mm跳动?

我们使用分辨率为0.001 mm的气动量仪在芯轴上100%测量所有夹头,任何超过0.005 mm的零件均被拒收——我们不会分选或分级处理。

如果我需要50件定制内孔,交货期是多长?

50件定制内孔的交货期为10天——我们按每批10件磨削内孔,首件样品在其余零件磨削前发送给您审批。

为何此夹头在中国制造——但绝非“廉价”夹头

我们是一家位于东莞的精密制造工厂,拥有20年CNC加工经验。我们为德国和日本品牌代工制造夹头——您很可能在不知情的情况下使用过我们的零件。区别在于,我们现在直接向您销售。您支付工厂价格,但获得相同的磨床(Studer和Junker)、相同的气动量仪(Marposs)和相同的检验流程。钢材从日本(Sanyo)或瑞典(Ovako)进口——我们不为此产品使用中国国产8620钢,因为其夹杂物含量对磨削内孔而言过高。

我们不会做的一件事:我们不会为了节省成本而跳过氮化步骤。该步骤每批增加3小时的炉时。这是夹头使用寿命500,000次循环与80,000次循环之间的区别。我们已对两者进行过测试。我们的夹头比无氮化版本贵约15%,但由于更换夹头频率降低,每个合格零件的成本更低。如果您在比较报价,请要求其他供应商提供氮化深度证书。如果他们无法提供,说明他们没有进行氮化处理。

安装与维护:两项检查可预防90%的跳动问题

安装此夹头时,请用无绒布清洁锥形座和夹头外锥面——不要涂油。带油的锥形座会产生液压锁定并导致跳动。将拉管扭矩拧至机器规格值,不要超过——过度拧紧会使夹头本体变形并破坏磨削精度。我们建议此尺寸的扭矩为15 Nm。如果您的拉管带有快换机构,请检查夹头的拉回距离。最大应为2.0 mm。如果拉回更多,夹头将过度收缩,槽会在棒料角部产生挤压。

每100,000次循环后,请用塞规检查内孔直径。如果磨损超过0.01 mm,夹头已到使用寿命——请勿重新磨削。重新磨削淬硬夹头会去除氮化层并改变槽几何形状。我们销售的新夹头价格低于您重新磨削的装夹时间成本。有关刀具几何形状如何影响切削的更多信息,请参阅我们的CNC刀具选择指南——其中解释了夹头夹持力如何间接影响刀具寿命。关于我们0.005 mm公差背后的数学原理,请参阅CNC加工公差指南——其中说明了为何我们将磨削公差控制在比车削公差更严格的水平。

12小时内获得确定报价——而非“预算范围”

请将您的三角棒料图纸(PDF或DXF格式)和机床型号发送给我们。我们将发送包含精确价格、交货期和夹头尺寸图纸的确定报价,供您审批。报价有效期为30天。我们不会对定制内孔磨削收取隐藏费用——价格包含定制内孔、氮化处理和检验证书。请发送电子邮件至sc@bquq.com,或通过WhatsApp联系+86 13713157787。如果您在中国时间(UTC+8)下午4点前发送图纸,当天即可收到报价。如果在此之后发送,次日早上10点前收到。这是我们的承诺。

我们还备有25型夹头的毛坯库存。如果您需要5件标准25.4 mm内孔的加急订单,我们可在48小时内发货。对于定制内孔,我们需要7天——磨削和氮化无法赶工。如果有人告诉您他们能在2天内发货定制内孔夹头,他们肯定没有进行氮化处理,也没有进行12点检验。您决定哪种夹头装入您的主轴。


相关产品

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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