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BQUQ CNC车削精密轴 | ±0.005 mm公差与3天交期

这些圆柱形零件由CNC车床从棒料或毛坯加工而成。我们确保圆度在0.005 mm以内,总跳动低于0.008 mm,表面粗糙度可达Ra 0.4。标准交期为原型件3天,批量生产7天。我们保证通过表面渗碳或整体淬火实现最高58 HRC的硬度。 我们如何消除长轴上的振纹 细长轴在车削过程中会发生挠曲变形。我们通过每隔150 mm设置中心架并在每次走刀时提供尾座支撑来应对这一问题。对于长径比超过8:1的轴,


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这些圆柱形零件由CNC车床从棒料或毛坯加工而成。我们确保圆度在0.005 mm以内,总跳动低于0.008 mm,表面粗糙度可达Ra 0.4。标准交期为原型件3天,批量生产7天。我们保证通过表面渗碳或整体淬火实现最高58 HRC的硬度。

我们如何消除长轴上的振纹

细长轴在车削过程中会发生挠曲变形。我们通过每隔150 mm设置中心架并在每次走刀时提供尾座支撑来应对这一问题。对于长径比超过8:1的轴,我们使用随动中心架跟踪刀具路径。这确保每100 mm长度的直线度在0.01 mm以内。无振纹,无螺旋刀痕,只有洁净的圆柱几何形状。

我们在东莞工厂使用的材料与热处理工艺

我们加工1215易切削钢、1045中碳钢、4140合金钢、440C不锈钢和6061-T6铝合金。为满足耐磨需求,我们对1045和4140提供感应淬火,硬度可达55-58 HRC。为满足耐腐蚀需求,440C可淬硬至56-58 HRC。我们还处理8620渗碳钢,渗碳层深度为0.8-1.2 mm。每批热处理均附带认证硬度报告。精密制造不是猜测,而是可测量的证明。

为何我们的CNC车削精密轴能保持0.008 mm跳动

跳动取决于主轴、卡盘和中心孔。我们在每根轴精车之前研磨中心孔。这些研磨后的中心孔以60度夹角研磨至Ra 0.2表面。主轴为15 kW伺服单元,配备陶瓷轴承预紧。液压卡盘以12 kN夹持力夹紧,重复精度达0.003 mm。这一组合在直径不超过50 mm的零件上实现了一致的TIR(总指示跳动)低于0.008 mm。

每次发货前检测:三坐标测量机与光学投影仪

每批产品均进行全检,而非抽检。我们使用蔡司三坐标测量机进行尺寸验证,泰勒霍普森轮廓仪检测表面粗糙度,基恩士光学投影仪检测螺纹和圆角。我们检查直径、长度、同轴度、跳动和表面粗糙度。每次发货均附带完整检测报告。若任一尺寸不合格,零件即报废。不返工,不放行。这是我们所有CNC车削精密轴的政策。

表面粗糙度选项:从Ra 3.2到Ra 0.4

标准车削提供Ra 1.6。对于密封面或轴承轴颈,我们改用修光刃刀片,实现Ra 0.8。对于关键应用,我们增加一道1200目砂带抛光工序,达到Ra 0.4。我们还提供对淬硬轴(45 HRC以上)进行硬车削,使用CBN刀片,无需磨削即可获得Ra 0.6。相比外圆磨削,这降低了成本和交期。

快速报价与无起订量:原型件与批量生产

我们是一家拥有20年历史的工厂,而非贸易公司。这意味着我们的报价基于实际机时、材料成本和检测时间。将您的图纸发送至STEP、IGES或PDF格式。我们在12小时内回复固定报价。我们无起订量。可订购一件原型件或100,000件批量产品。单价随数量下降,但质量标准始终如一。所有零件均在中国制造,并具备ISO 9001:2015可追溯性。

如何指定键槽、螺纹和横孔

您的图纸应包含键槽宽度公差(通常为H9)、螺纹等级(2A或3A)以及横孔位置公差。我们在车削后在CNC铣削中心加工键槽,宽度控制在+0.000/-0.025 mm。螺纹采用单点刀片切削而非板牙,因此中径精度在0.05 mm以内。横孔在第四轴上钻削,定位精度为±0.02 mm。如果您对GD&T符号不确定,请参阅我们博客上的CNC加工公差指南

缩短节拍时间的刀具策略

我们使用配备动力刀具的12工位刀塔。对于一根标准20 mm直径、含两个直径、一个螺纹和一个横孔的轴,节拍时间为45秒。我们通过在一次装夹中合并粗加工和精加工走刀来缩短节拍时间。我们还使用通过主轴的高压冷却液(70 bar)断屑并延长刀具寿命。对于440C等较硬材料,我们选用立方氮化硼刀片。我们的刀具选择详见CNC刀具选择指南

参数规格
材料1215、1045、4140、440C、8620、6061-T6
直径范围3 mm - 80 mm(车削)
长度范围5 mm - 1000 mm
硬度(整体淬火)最高58 HRC(440C、4140)
硬度(渗碳淬火)55-60 HRC,渗碳层深度0.8-1.2 mm
直径公差±0.005 mm(磨削可选:±0.002 mm)
总跳动(TIR)≤ 0.008 mm
直线度每100 mm长度0.01 mm
表面粗糙度(车削)Ra 0.8 - 1.6
表面粗糙度(抛光)Ra 0.4
交期(原型件)3个工作日
交期(批量生产)7-10个工作日
起订量无起订量(接受1件)
检测报告随每次发货附带

你们是否接受单件原型轴的订单?

是的,我们接受CNC车削精密轴的单件订单,无起订量。

你们能否在轴端加工定制键槽或螺纹?

是的,我们可以根据您的图纸加工键槽、花键、螺纹和横孔。

你们如何保证大批量生产时的质量?

我们对首件进行首件检验,并在生产过程中每30分钟进行SPC抽样。

加急订单的最快交期是多少?

对于标准钢轴,如果您在北京时间上午10点前确认报价,我们可在48小时内发货。

发送您的图纸,12小时内获得固定报价。邮箱:sc@bquq.com。WhatsApp:+86 13713157787。我们将回复价格、交期和DFM反馈。无起订量。中国制造,精密制造,可验证。


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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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