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BQUQ CNC加工自动车床46型夹头前视圆孔

这是一款用于自动车床的46型夹头,由整块合金钢坯料加工而成。前视圆孔配置在夹持直径处实现0.005 mm TIR(总指示跳动量),确保高速车削过程中零刀具偏摆。我们可在7天内发货,夹头淬硬至58 HRC,内孔表面粗糙度Ra 0.4 µm。每个循环中棒料定位一致,不仅仅是首件。 为什么46型孔几何形状可将振动降低30% 前视圆孔并非简单钻孔。我们加工全长后锥度,每10 mm孔深锥度0.02


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这是一款用于自动车床的46型夹头,由整块合金钢坯料加工而成。前视圆孔配置在夹持直径处实现0.005 mm TIR(总指示跳动量),确保高速车削过程中零刀具偏摆。我们可在7天内发货,夹头淬硬至58 HRC,内孔表面粗糙度Ra 0.4 µm。每个循环中棒料定位一致,不仅仅是首件。

为什么46型孔几何形状可将振动降低30%

前视圆孔并非简单钻孔。我们加工全长后锥度,每10 mm孔深锥度0.02 mm,在夹头闭合时将棒料向内拉紧。这消除了直孔中常见的“喇叭口”效应。在我们的测试台上,使用20 mm圆棒在6,000 RPM转速下,与标准平行孔相比,谐波振动降低了30%。结果是车削零件表面光洁度更佳,刀片寿命更长。

材料与热处理:8620或4140,而非12L14

我们拒绝使用易切削12L14制造夹头,因其表面硬化效果差。相反,我们提供两种选择:AISI 8620以获得最大韧性(芯部硬度32 HRC,表面58–60 HRC),或AISI 4140进行整体淬硬至56–58 HRC。两者均采用真空热处理以防止脱碳。我们在热处理后进行内孔磨削,而非之前。这确保圆度保持在0.003 mm,对46型锥度锁紧至关重要。

每次发货前检验:5点内孔检查

每只夹头均通过分辨率为0.0005 mm的气动量规进行5点内孔检查。我们在内孔前部、中部、后部以及锥度上两点进行测量。我们还在精密心轴上执行完整的360度跳动测试。如果任何读数超过0.005 mm TIR,该夹头即报废,不进行返工。您将随货收到打印的检验报告,显示5个点中每个点的实际测量值。

规格数值
可用材料AISI 8620、AISI 4140、SUS440C(按要求)
内孔直径范围3 mm – 32 mm(公制),1/8" – 1-1/4"(英制)
硬度(8620)芯部32 HRC,表面58–60 HRC
硬度(4140)56–58 HRC整体淬硬
跳动量(内孔TIR)0.005 mm或更优
内孔表面粗糙度Ra 0.4 µm(磨削)
锥角公差± 0.0005度
圆度(内孔)0.003 mm
交货期标准尺寸7天,定制内孔15天
最小起订量无最小起订量 — 可订购1件或1,000件

硬度与韧性:为什么58 HRC是最佳平衡点

我们不追求62 HRC。在该硬度下,夹头变脆,夹紧应力下槽口可能开裂。我们的58–60 HRC表面硬度提供耐磨内孔,而32 HRC芯部吸收夹头手指的循环弯曲。我们已测试该组合超过500,000次开闭循环而无槽口疲劳。对于大批量生产,这意味着更少的夹头更换和更少的停机时间。

异形棒料定制内孔轮廓

我们可在同一46型本体上加工六角、方形或阶梯内孔。前视圆孔为标准配置,但我们可增加沉孔用于台阶加工,或增加卸荷槽用于送进涂层棒料。将您的棒料横截面图纸发送给我们,我们将通过FEA模型确认夹紧力分布。定制内孔交货期为15天,成本仅比标准内孔高15%。

我们如何验证46型主轴上的夹头锥度

46型夹头采用10度包含锥角。我们在内部使用带金刚石修整器的外圆磨床磨削该锥度。然后将每只夹头与可追溯至NIST的主规环配合。接触面积必须在锥度上至少达到85%,使用蓝油检查。如果低于此值,我们重新磨削锥度并重新检验。这确保您的夹头在主轴鼻端完美就位,从源头消除径向跳动。

海运包装与防锈保护

我们使用VCI(气相防锈)纸包裹,并将每只夹头放入独立塑料管中。管子装入带泡沫内衬的木箱中以防冲击损坏。这不是标准包装——我们这样做是因为我们了解到内孔生锈会毁掉客户生产运行的第一小时。对于空运,我们使用单层VCI薄膜和纸箱。

你们的最小起订量是多少?

无最小起订量。我们接受单件试制订单,单件价格与100件价格相同。

你们能否将内孔直径定制为我的精确棒料尺寸?

可以,我们可磨削3 mm至32 mm之间的任何内孔直径,公差为+0.005 / -0.000 mm,我们还可加工六角或方形内孔。

你们如何确保夹头在10,000次循环后不失去夹持力?

我们对每个生产批次执行循环疲劳测试:在80%最大夹紧力下进行10,000次开闭循环,然后重新测量内孔和锥度;如果跳动量偏移超过0.002 mm,该批次即被拒收。

定制夹头的实际交货期是多少?

标准尺寸为7天。带图纸的定制内孔轮廓为15天。如果您需要更快,我们可以拆分订单,先发标准内孔,再发定制内孔。

发送您的图纸或棒料横截面的简单草图。我们将在12小时内检查您的46型主轴规格并确认内孔几何形状。如需含确切价格和交货日期的正式报价,请发送邮件至sc@bquq.com或通过WhatsApp联系+86 13713157787。我们在12小时内回复,而非48小时。如果您仍在选择合适的夹头材料,请阅读我们的CNC刀具选择指南。如需更严格的公差要求,请参阅我们的CNC加工公差指南。这是中国精密制造,无最小起订量,无中间商。


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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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