行业组件数据 · 2026

夹头

A precision clamping device used in machining to securely hold cutting tools or workpieces in tool holders or collet chucks.

技术定义与适配语境
典型 夹头 会按材料、尺寸公差、适配关系和失效风险在 机械和设备制造 中评估。

A collet is a cylindrical sleeve with a tapered outer surface and a split inner surface that compresses uniformly when tightened, creating a precise and secure grip on cylindrical tools or workpieces. It functions as an interface between the tool holder and the cutting tool, ensuring accurate concentricity and minimal runout during machining operations.

组件规格

定义
A collet is a cylindrical sleeve with a tapered outer surface and a split inner surface that compresses uniformly when tightened, creating a precise and secure grip on cylindrical tools or workpieces. It functions as an interface between the tool holder and the cutting tool, ensuring accurate concentricity and minimal runout during machining operations.
工作原理
The collet operates on the principle of elastic deformation. When inserted into a matching tapered bore of a collet chuck or tool holder and tightened (typically via a drawbar or nut), the tapered surface forces the split segments of the collet to contract uniformly. This radial compression grips the tool or workpiece with high clamping force and excellent concentricity, minimizing vibration and ensuring precise machining.
材料
Typically made from high-strength alloy steel (e.g.AISI 41404340) or tool steeloften heat-treated to HRC 45-50 for durability. Some precision collets use spring steel or carbide for specialized applications. Surface treatments like nitriding or chrome plating may be applied to enhance wear resistance.
Collet Type
ER, TG, DA, RDO, etc.
Maximum RPM
Varies by type, e.g., up to 25,000 RPM for balanced collets
Taper Angle
e.g., 8° for ER collets
Clamping Range
e.g., 1-7 mm for ER-16
Nominal Diameter
e.g., ER-16, ER-32
Runout Tolerance
Typically <0.005 mm
标准
ISO 15488DIN 6499

行业分类与别名

夹头 的常用贸易名称、技术标识和检索关键词。

上级产品

该组件会出现在以下整机或工业产品中。

FMEA · 风险与缓解

诱因 → 失效模式 → 工程缓解

Wear or damage to collet taper or split segments->Reduced clamping force, tool slippage, or excessive runout->Regular inspection and replacement of worn collets; proper cleaning and maintenance
Using a collet outside its specified clamping range->Poor concentricity, vibration, or tool damage->Always select collets matching the tool diameter; avoid over- or under-sizing

工业生态与工程逻辑

0
Incorrect collet selection leading to tool slippage or breakage
1
Over-tightening causing collet deformation or reduced lifespan
2
Runout due to wear or contamination affecting machining accuracy

合规与检测

tolerance
Runout tolerance typically within 0.005 mm per ISO standards; dimensional accuracy per ISO 15488
test method
Runout measured with dial indicators or laser alignment tools; clamping force tested with torque wrenches and pull-out tests

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来自 CNFX 组件能力表的相关制造商资料。

制造商列表用于前期研究和供应商能力理解,不代表认证、排名或交易担保。

采购评估维度

不是客户评论,也不是实时热度。以下维度用于前期 RFQ 准备和供应商评估。

技术文档
4/5
制造能力
4/5
可检验性
5/5
供应商透明度
3/5

这些分值是采购评估维度示例,不代表真实客户评分、具体国家买家反馈或实时询盘。

相关组件

常见问题

What is the difference between ER and TG collets?

ER collets have an 8° taper and are versatile with a wide clamping range, commonly used in general machining. TG collets have a steeper 15° taper, offering higher gripping force and rigidity, often used in high-precision or heavy-duty applications.

How do I select the right collet size?

Match the collet nominal size (e.g., ER-32) to your tool holder, and ensure the tool shank diameter falls within the collet's clamping range. Always use a collet that closely matches the tool diameter for optimal grip and minimal runout.

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CNFX Industrial Component Index · 机械和设备制造

数据基础

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初步技术归类
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URN:CNFX:ME:UNIT:COLLET