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CNC加工真空泵零件 | BQUQ精密制造中国

这些CNC加工真空泵零件是保持泵体高效运转的精确转子、定子、端板和阀体。我们将同心度控制在0.008 mm TIR以内,表面粗糙度达到Ra 0.4,标准零件从东莞工厂发货,交期7天。耐磨表面硬度可达HRC 58,每批产品在出厂前均经过三坐标测量机检测。 我们如何将转子与定子间隙控制在0.015 mm以内 间隙增大时,真空泵性能会下降。我们在同一台四轴CNC加工中心上一次装夹完成转子外径和定子内孔


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这些CNC加工真空泵零件是保持泵体高效运转的精确转子、定子、端板和阀体。我们将同心度控制在0.008 mm TIR以内,表面粗糙度达到Ra 0.4,标准零件从东莞工厂发货,交期7天。耐磨表面硬度可达HRC 58,每批产品在出厂前均经过三坐标测量机检测。

我们如何将转子与定子间隙控制在0.015 mm以内

间隙增大时,真空泵性能会下降。我们在同一台四轴CNC加工中心上一次装夹完成转子外径和定子内孔的加工,从而消除累积误差。我们控制的典型间隙:油封旋片泵为0.015–0.025 mm。对于干式螺杆泵,我们控制得更严格——侧面间隙为0.010 mm。您获得的是稳定的极限压力,而不是运行500小时后失去真空度的泵。

适用于无油泵和润滑泵的材料及热处理

我们常备6061-T6铝材用于轻量化转子,304/316L不锈钢用于腐蚀性介质,4140或42CrMo4钢材用于高扭矩轴。对于叶片槽和罗茨转子,我们进行热处理至HRC 50–58,然后磨削密封面。铝制零件采用硬质阳极氧化处理(3级,50 µm),以抵抗碳叶片带来的磨损。您选择材料,我们负责热处理后的变形控制。

所有超过200 mm的转子均进行动平衡和跳动检测

不平衡的转子会导致泵体振动、轴承磨损并增加噪音。我们对所有长度超过200 mm的转子按ISO 1940标准进行G2.5级动平衡。轴颈和密封表面的跳动使用分辨率为0.001 mm的V型块指示器检测。任何超过0.008 mm TIR的产品均被拒收。这就是低噪音泵与高噪音泵之间的区别。

每次发货前检测:三坐标测量机、气动量仪和硬度测试

无例外。每个零件均经过三坐标测量机进行GD&T形位公差检测、气动量仪测量孔径、洛氏硬度计测试硬度。我们随货发送完整的检测报告——PDF格式,而非模糊的证书。如果关键尺寸偏差0.005 mm,我们直接报废,绝不发货。您需要的是证据,而非承诺。我们提供数据。

影响泵效率的表面处理选项

粗糙表面会滞留气体并增加放气量,从而降低极限真空度。我们标准加工密封面至Ra 0.4。对于高真空应用,我们抛光至Ra 0.2或增加研磨工序至Ra 0.1。内部流道加工至Ra 0.8以减少摩擦损失。这些并非外观选择——它们可在相同电机下将泵的抽速提升高达8%。

原型和小批量生产的交期与灵活性

原型CNC加工真空泵零件7天内发货。50–5000件的小批量生产周期为15–20天。我们实行24/5无人化CNC单元运行,您的订单无需排队等待。无最小起订量——可订购一件测试,也可订购千件组装。标准尺寸免收模具费。对于定制几何形状,我们收取一次性设置费,并在订购500件后退还。

螺纹、O型圈槽和接口按真空标准加工

NPT、BSPP和SAE螺纹采用单点刀具车削而非丝锥攻丝,确保无泄漏密封。O型圈槽按AS568A尺寸加工,可选燕尾槽设计,使O型圈在装配过程中保持固定。接口内部去毛刺并倒角,防止泵腔内产生颗粒。我们深知真空管路中一个毛刺就可能导致灾难性泄漏。我们消除这一风险。

规格数值/范围
材料6061-T6铝、304/316L不锈钢、4140、42CrMo4、黄铜、PEEK
转子直径范围20 mm – 400 mm
硬度(钢制零件)HRC 50–58(表面或整体淬硬)
硬度(铝制零件)硬质阳极氧化3级,50 µm
加工公差关键特征±0.005 mm
同心度(转子至内孔)最大0.008 mm TIR
表面粗糙度(密封面)标准Ra 0.4,可选Ra 0.2
动平衡(转子>200 mm)按ISO 1940 G2.5级
交期(原型)7天
交期(批量生产)15–20天
最小起订量无(接受1件)
检测报告包含三坐标测量机、气动量仪、硬度测试PDF

定制真空泵零件的最小起订量是多少?

无最小起订量——我们加工单件原型或整批生产;随着数量增加,单件成本下降,但我们绝不强制您超量订购。

能否完全匹配我现有泵零件的尺寸?

可以,发送您的图纸或样品零件——我们使用3D扫描仪进行逆向工程,并在切削金属前确认每个关键尺寸。

如何确保0.015 mm等紧密间隙的质量?

我们采用恒温加工(22°C ±1°C),并在同一房间内使用三坐标测量机和气动量仪测量,确保热膨胀不会造成读数误差。

如果急需零件,实际交期是多少?

对于标准材料和简单转子,我们可在5天内发货(需加急费);正常原型交期为7天,批量生产为15–20天。

如需耐磨或难加工合金的材料选择建议,请阅读我们的CNC刀具选择指南。要了解我们如何可靠地保持±0.005 mm公差,请参阅CNC加工公差解析指南

立即发送您的图纸。12小时内获得固定报价。邮件sc@bquq.com或WhatsApp +86 13713157787。精密制造,中国品质,无最小起订量——我们的零件让您的真空泵运行更出色。


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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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