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BQUQ CNC加工自动车床60型圆孔弹簧夹头

这款夹头能为您的自动车床带来什么实际价值 CNC加工自动车床60型圆孔弹簧夹头是一款精密工件夹持组件,专为走心式和自动车床设计。它可夹持直径3 mm至60 mm的圆棒料,使其与主轴轴线保持同心。其核心优势在于重复夹持力稳定,在鼻端测得的总指示跳动(TIR)为0.005 mm(使用校准测试棒测量)。这消除了高速车削过程中的棒料回退和振动,意味着更少的废品率和更长的刀具寿命,适用于您现有的CNC机床。


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这款夹头能为您的自动车床带来什么实际价值

CNC加工自动车床60型圆孔弹簧夹头是一款精密工件夹持组件,专为走心式和自动车床设计。它可夹持直径3 mm至60 mm的圆棒料,使其与主轴轴线保持同心。其核心优势在于重复夹持力稳定,在鼻端测得的总指示跳动(TIR)为0.005 mm(使用校准测试棒测量)。这消除了高速车削过程中的棒料回退和振动,意味着更少的废品率和更长的刀具寿命,适用于您现有的CNC机床。

夹头本体采用40CrMo合金钢加工,夹持段经热处理至58–60 HRC。内孔经磨削和珩磨处理,表面粗糙度达Ra 0.2 µm。标准规格交期为15个工作日,我们无起订量要求——如果您的测试需要,订购一件即可。这是中国制造的精密加工产品,但附带的质量文件与欧洲或日本供应商相当。

为什么60型内孔几何形状能防止棒料滑移

“60型”指的是夹头本体内部加工的60°锥角。这并非外观细节。锥角控制径向夹紧力的方向。当拉管向后拉动夹头时,60°锥角将轴向拉力转化为径向压缩力。圆孔随后沿棒料整个圆周接触,而非像卡爪卡盘那样仅在三点或六点接触。

全圆周接触使夹紧力均匀分布。这防止棒料被压伤或变形——当您需要一次走刀完成精加工轴表面时,这是关键因素。弹簧夹头段开有槽口,允许0.5 mm的径向压缩范围。这意味着一个夹头可处理直径偏差达±0.25 mm的棒料,且不损失夹持精度。对您的CNC车床而言,这减少了装夹时间,因为您无需为每批略有差异的棒料更换夹头。

我们还将内孔磨削至与本体中心线平行,在整个夹持长度内平行度在0.003 mm以内。即使在主轴转速超过6000 RPM时,这也能确保您钻出的孔和车削的外圆与棒料中心线保持同心。

我们采用的材料和热处理工艺,确保长使用寿命

夹头本体和夹持段采用40CrMo(相当于AISI 4140)铬钼钢制造。选择这种合金是因为其高疲劳强度——夹持段在使用寿命内会弯曲数百万次,而较低等级的钢材会在槽根处开裂。我们先将材料预热处理至28–32 HRC以便加工,在所有切削工序完成后进行最终真空淬火至58–60 HRC。

真空淬火至关重要。它能防止表面脱碳和氧化,否则会在夹持表面留下软而脆的皮层。淬火后,我们进行两次回火以消除内应力。这确保夹头安装到机床主轴上时不会变形。最终磨削工序去除0.1 mm材料,以达到夹持直径指定的H7内孔公差。

对于腐蚀性或不锈钢棒料,我们提供内孔氮化钛(TiN)涂层选项。该涂层硬度为2300 HV,与钢的摩擦系数为0.4。它能防止咬合,并将重新磨削的间隔时间延长至未涂层内孔的三倍。

弹簧机构如何保持稳定的夹持力

这是一款弹簧夹头,而非液压或气动卡盘。夹持力来自安装在夹持段与夹头本体之间的六组螺旋压缩弹簧。当拉管释放时,弹簧将夹持段径向向外推,打开内孔。当拉管拉动时,克服弹簧力将内孔闭合到棒料上。

弹簧力在我们工厂校准为每组120 N,在20 mm直径棒料上产生总计720 N的径向力。这足以抵抗0.5 mm切深的粗加工切削力,但又不会大到压伤软铝或黄铜棒料。您可以调整机床上的拉管压力来微调夹持力,但弹簧确保即使机床液压压力波动时也有基准力。

每组弹簧在装配前经过10,000次循环压缩测试。我们测量测试开始和结束时的力值。允许下降幅度为3%。如果弹簧力损失超过该值,则被拒收。这确保了您在长时间批量生产中保持一致的零件间同心度。

每次发货前的检验:我们测量什么

每件CNC加工自动车床60型圆孔弹簧夹头均单独检验,而非批量抽检。我们使用蔡司Contura三坐标测量机(CMM),分辨率达0.0001 mm,来验证关键尺寸。检验报告随每次发货附上,即使是单件订单也不例外。

以下是我们测量的项目及执行的标准:

  • 内孔直径:使用内径千分表验证,公差H7(例如20.000 mm +0.021 / -0.000 mm)。
  • 内孔锥角:使用正弦规和量球测量,公差±0.5角分。
  • 跳动:使用安装在夹头中的测试棒测量,TIR不超过0.005 mm。
  • 硬度:使用洛氏C硬度计在本体和一段夹持段上测试,读数须为58–60 HRC。
  • 表面粗糙度:使用泰勒霍普森轮廓仪测量,内孔Ra 0.2 µm,本体Ra 0.8 µm。
  • 弹簧力:使用专用测试台测试,每组弹簧须为120 N ±5 N。

我们还在放大灯下进行100%目视检查,检查毛刺、边缘倒角或刀具痕迹。内孔上任何深度超过0.05 mm的划痕均报废处理。这不是可选项——这是我们保持发货零件缺陷率低于0.1%的方式。

60型圆孔弹簧夹头规格参数

参数数值备注
产品类型CNC加工自动车床60型圆孔弹簧夹头适用于走心式和自动车床
棒料夹持能力直径3 mm – 60 mm圆孔,其他形状可定制
本体材料40CrMo(相当于AISI 4140)铬钼合金钢
硬度(本体及夹持段)58–60 HRC真空淬火,双重回火
内孔公差H7(例如20 mm为+0.021 / -0.000 mm)磨削并珩磨
内孔表面粗糙度Ra 0.2 µm使用轮廓仪测量
跳动(TIR)最大0.005 mm在测试棒上检查
锥角60° ±0.5角分内锥
每组弹簧力120 N ±5 N共6组弹簧,20 mm棒料上径向力720 N
涂层选项TiN(氮化钛)2300 HV,适用于不锈钢或腐蚀性棒料
交期15个工作日标准规格,定制另议
起订量无起订量接受单件订购
原产地中国制造东莞工厂,20年经验

我们在东莞的20年经验对您的交货计划意味着什么

我们是BQUQ,一家位于中国东莞的工厂,自2004年以来一直从事精密零部件加工。我们在CNC加工、冲压和弹簧制造方面拥有20年经验,这意味着我们完全在厂内控制这款夹头的整个生产链。我们不外包磨削、热处理或弹簧卷制。这就是为什么我们的标准交期是15个工作日,而非贸易公司可能给出的6–8周。

我们拥有12台CNC车床和4台外圆磨床,专门用于夹头生产。热处理生产线在厂内,因此我们无需等待第三方供应商返还零件。如果您需要定制内孔直径,我们通常可在交期基础上增加3个工作日。对于紧急订单,标准规格可加急至7个工作日,具体视当前生产负荷而定。

从我们这里订购,您直接与制造商合作。没有中间商加价,技术图纸沟通也没有语言障碍。我们的工程师精通ISO 2768和ASME Y14.5标准的GD&T(几何尺寸与公差)。如果您对自动车床主轴有特定要求,请将您的图纸或主轴鼻端规格发送给我们,我们将在开始生产前确认适配性。

这款夹头的起订量是多少?

没有起订量——我们接受单件订购,因为我们知道您需要在自己的机床上测试夹头,然后才决定大批量生产。

能否定制内孔直径或锥角?

可以,我们可以磨削3 mm至60 mm范围内的任何内孔直径,也可以更改锥角以匹配非标准主轴鼻端,前提是您提供相关尺寸数据。

你们如何控制每件夹头的质量?

每件夹头均使用蔡司三坐标测量机检验内孔公差、锥角和跳动,并进行洛氏硬度测试和10,000次循环弹簧力测试,完整报告随货附上。

从下单到交货的实际交期是多少?

标准规格15个工作日内发货,定制内孔需18个工作日,紧急订单可加急至7个工作日——所有交期在下单时以书面形式确认。

12小时内获取正式报价

将您的图纸或主轴鼻端尺寸发送给我们,我们将在12小时内返回正式报价及确认的交货日期。我们将附上检验报告模板和付款条件(电汇或PayPal),让您清楚了解预期。如果您不确定内孔尺寸或锥角,请将棒料直径和机床型号发送给我们——我们的工程师将推荐正确的夹头配置。

将您的图纸发送至sc@bquq.com,或通过WhatsApp联系我们+86 13713157787。在中国工作时间(GMT+8)内,我们通常在一个工作小时内回复。如果您正在评估新项目的刀具,也请查看我们的CNC刀具选择指南CNC加工公差指南,确保您的整个工艺配置得到优化。今天就发送您的图纸——我们已准备好明天早上开始加工您的夹头。


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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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