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BQUQ CNC加工气动夹头卡盘 三爪通孔 自动车床专用

这款卡盘在您的自动车床上的独特优势 这是一款CNC加工的气动夹头卡盘,采用三爪通孔设计,专为无人值守循环运行的自动车床打造。可夹持直径3 mm至42 mm的棒料,无需手动重新夹紧,通孔设计让冷却液和切屑直接从后方排出。夹持区域跳动精度达0.005 mm TIR,所有配合面表面粗糙度Ra 0.4 µm,卡爪导轨表面硬度HRC 58-62。我们从东莞工厂发货,交期7个工作日,无起订量——可订购1件


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这款卡盘在您的自动车床上的独特优势

这是一款CNC加工的气动夹头卡盘,采用三爪通孔设计,专为无人值守循环运行的自动车床打造。可夹持直径3 mm至42 mm的棒料,无需手动重新夹紧,通孔设计让冷却液和切屑直接从后方排出。夹持区域跳动精度达0.005 mm TIR,所有配合面表面粗糙度Ra 0.4 µm,卡爪导轨表面硬度HRC 58-62。我们从东莞工厂发货,交期7个工作日,无起订量——可订购1件用于打样,或500件用于批量生产。

这不是铸造本体。我们采用实心4140预硬钢,CNC加工每个孔腔、槽和螺纹,然后研磨关键内孔。结果是卡盘在10,000次循环中重复精度保持在0.01 mm以下,这正是其适用于走心式车床和多轴自动车床的原因,这些设备对逐站精度要求极高。

三爪通孔设计如何缩短循环时间

标准夹头卡盘从外部夹紧并堵塞主轴通孔。这款卡盘采用三个淬硬卡爪径向向内移动,留出26 mm的通孔。您可以连续送长棒料——无需切断并重新装夹进行二次加工。在典型的加工20 mm圆棒的自动车床上,与实心夹头相比,每个零件可节省15秒。按8小时班次计算,每台机器大约可多生产200个零件。

气动驱动在后部使用单个气口。施加4至6 bar气压,卡爪以12 kN夹紧力闭合。释放压力后,弹簧自动推开卡爪。无需液压单元、无需拉杆调节、无需手动扭矩扳手。操作员只需装载棒料、按下启动键,机器运行至棒料送料器发出空料信号为止。

我们以相对于卡盘中心线0.003 mm的位置公差加工卡爪槽。这正是保持三个卡爪同步的关键——每个卡爪移动相同距离,因此圆棒料保持在0.005 mm TIR以内的中心位置。如果加工六角或方棒料,同一组卡爪可夹持平面而不损伤表面,因为我们在夹持面上研磨了微型锯齿纹路。

我们采用的材料和热处理工艺确保长寿命

卡盘本体采用AISI 4140钢,加工前预硬至28-32 HRC。CNC切削后,我们将卡爪导轨表面渗碳淬硬至58-62 HRC,渗碳层深度0.8 mm。卡爪本身采用8620合金钢,渗碳至60-64 HRC,然后研磨至外径和内径最终公差0.005 mm。这种组合使卡盘能够抵抗磨蚀性304不锈钢或6061铝材在6,000 RPM转速下运行产生的磨损。

通孔衬套是独立零件,采用淬硬52100轴承钢制造。该衬套可更换——在大约200,000次循环后磨损时,10分钟内即可更换衬套,无需更换整个卡盘。我们还将本体孔进行氮化处理,硬度相当于70 HRC,以在大量使用冷却液的加工中提供耐腐蚀性。

所有紧固件均为12.9级内六角螺钉,镀锌镍防锈。气动活塞采用阳极氧化7075铝材,重量轻,可减少高频夹紧循环中的惯性。我们将整个组件在6,000 RPM下平衡至G2.5等级,因此运行时不会在成品零件上留下振动痕迹。

每批发货前的检验流程

每一只卡盘在离开东莞前都要经过我们QC实验室的12项检验。我们使用0.001 mm千分表在精密心轴上测量跳动——如果读数超过0.005 mm TIR,即判定不合格并进行返工。我们在20°C下使用三坐标测量机检查卡爪平行度,在6 bar气压下验证气缸行程,并在负载下测试100次开合循环。最终报告包含沿卡爪长度3个位置的跳动打印图表。

我们还使用通止规检验通孔,确认26 mm棒料可自由通过。对于定制孔径——例如32 mm或40 mm——我们按您的图纸加工衬套,并使用相同量规进行验证。每只卡盘附带校准证书,列明测量值、热处理炉批号和最终检验日期。

如果您需要更严格的跳动规格,我们可以将卡爪研磨至0.003 mm TIR,但这会增加3天交期。对于99%的自动车床加工,0.005 mm已足够——可轻松保证车削零件±0.01 mm的公差。

对您设备集成至关重要的规格参数

参数数值
本体材料AISI 4140预硬钢
卡爪材料8620合金钢,渗碳处理
通孔衬套52100轴承钢,可更换
夹持范围3 mm – 42 mm(圆棒料)
通孔直径26 mm标准(最大40 mm定制)
夹紧力6 bar气压下12 kN
硬度(卡爪导轨)HRC 58-62,渗碳层深度0.8 mm
跳动(TIR)夹持区域0.005 mm
表面粗糙度配合面Ra 0.4 µm
最高转速6,000 RPM(G2.5动平衡)
交期7个工作日(标准),5天(加急)
起订量无起订量——1件即可

所有尺寸均为公制。我们可以调整后法兰以适配您特定的自动车床主轴鼻端——只需发送主轴图纸或机床型号。常见安装方式包括A2-5、A2-6以及带导向孔的平背板。

如何为您的棒料送料器订购定制版本

如果您的自动车床使用料仓式棒料送料器,标准卡盘配合直通衬套即可使用。但如果您使用带导向管的液压式棒料送料器,我们可以在衬套上加工锥形入口以减少振动。我们还可以增加压力传感器端口,实时监测夹紧力——这需要在本体上钻一个2 mm孔,并在后盖上加工M8螺纹端口。

对于小直径(8 mm以下),我们提供精密夹头适配器,可安装在三爪卡盘内部,形成可互换的夹头系统。这在加工3 mm至6 mm销钉的走心式车床上很常见。适配器研磨至0.003 mm跳动,价格比基础卡盘高15%。对于更大棒料(超过42 mm),我们加工一套夹持半径更宽的定制卡爪——交期延长至10个工作日。

我们还提供弹簧加载版本,适用于无气源供应的机床。该版本使用带碟簧组的机械拉杆,提供相同的12 kN夹紧力,但需要手动或液压拉拔器。请在询价时告知您的驱动方式,我们将推荐合适的型号。

有关自动车床切削参数和刀具选择,请参阅我们的CNC切削刀具选择指南,以避免振刀和刀具磨损。如果您使用此卡盘生产的零件需要严格控制公差,我们的CNC加工公差指南说明了如何在图纸上标注GD&T以获得最佳效果。

常见问题解答

这款卡盘的最小起订量是多少?

无起订量——我们接受单件用于打样或试用,单价与100件订单相同。

能否为非标准主轴鼻端进行改装?

可以,我们可以加工任何后法兰或导向孔以匹配您的车床——只需发送主轴图纸或机床品牌型号。

发货前如何保证质量?

每只卡盘均经过三坐标测量机和跳动测试的单独检验,并附带包含实测值的签名校准证书。

定制版本的最快交期是多少?

标准7个工作日,加急加工5天,现货标准型号3天。

12小时内获取确定报价

将您的图纸(STEP、PDF,甚至手绘草图)发送至sc@bquq.com,我们将在12个工作小时内回复确定报价——包括材料、加工时间、热处理和运费。紧急询价请通过WhatsApp联系我们:+86 13713157787。我们是一家中国精密制造企业,拥有20年CNC加工经验,小批量订单不加价。

请在邮件中注明主轴类型、棒料直径和预期循环时间。我们将确认卡盘是否适配您的机床,并推荐合适的卡爪配置。无起订量、无设计费、无强制义务——只给您价格和交期的直接答复。


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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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