行业组件数据 · 2026

测针

A precision stylus used in touch-trigger probes for coordinate measuring machines (CMMs) to contact and measure workpiece surfaces.

技术定义与适配语境
典型 测针 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 stylus is a slender, rigid component of a touch-trigger probe system on coordinate measuring machines (CMMs) and machine tools. It serves as the physical interface that makes contact with the workpiece surface during dimensional inspection. When the stylus tip deflects upon contact, it triggers a signal to the probe head, recording the precise coordinate position. Styluses are designed for minimal deflection, high repeatability, and geometric accuracy to ensure measurement integrity across various materials and surface conditions.

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组件规格

定义
A stylus is a slender, rigid component of a touch-trigger probe system on coordinate measuring machines (CMMs) and machine tools. It serves as the physical interface that makes contact with the workpiece surface during dimensional inspection. When the stylus tip deflects upon contact, it triggers a signal to the probe head, recording the precise coordinate position. Styluses are designed for minimal deflection, high repeatability, and geometric accuracy to ensure measurement integrity across various materials and surface conditions.
工作原理
The stylus operates on mechanical deflection and electrical triggering. When the stylus tip contacts a workpiece, it causes a slight deflection in the probe's suspension mechanism (e.g., kinematic mount or strain gauges). This deflection closes an electrical circuit or alters a signal, generating a trigger pulse. The CMM or machine tool controller captures the machine's position at that instant, recording the measurement point. The stylus must return precisely to its neutral position after each contact to maintain accuracy.
材料
Common materials include tungsten carbide for the shaft (high stiffnesswear resistance)ruby or sapphire for the ball tip (hardnesslow frictioncorrosion resistance)and stainless steel for shanks and threads. Ceramic and silicon nitride are also used for specialized applications requiring electrical insulation or thermal stability.
Thread Type
M2, M3, M4, or proprietary (e.g., Renishaw PH10)
Tip Diameter
0.3 mm to 8 mm (common range)
Repeatability
<0.1 µm (for high-precision models)
Stylus Length
20 mm to 500 mm
Shank Diameter
3 mm, 4 mm, 6 mm (standard)
Bending Strength
>50 N/mm (varies by material)
Max Operating Speed
Up to 500 mm/s
标准
ISO 10360ISO 15530DIN 32877

行业分类与别名

测针 的常用贸易名称、技术标识和检索关键词。

CMM stylustouch probe stylusmeasurement stylusprobe tipmetrology styluscoordinate measuring machineprecision inspectionruby tip stylus测针Stylus机械和设备制造 测针

上级产品

该组件会出现在以下整机或工业产品中。

触发式测头
一种用于坐标测量机（CMM）的精密传感器组件，通过检测与工件的物理接触来触发测量数据采集。
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FMEA · 风险与缓解

诱因 → 失效模式 → 工程缓解

Abrasive workpiece surfaces or high-frequency use->Tip wear causes increased effective diameter, leading to measurement errors->Use harder tip materials (e.g., ruby), regular calibration, and replace stylus based on usage cycles
Improper setup or collision during machine movement->Stylus bending or breakage, resulting in probe damage and downtime->Implement collision avoidance software, use breakaway modules, and train operators on safe practices
Dust, coolant, or oil accumulation on the stylus->False triggers or delayed signals, reducing measurement repeatability->Apply protective covers, use air purge systems, and perform regular cleaning

工业生态与工程逻辑

兼容对象
Coordinate Measuring Machines (CMMs)CNC Machine Tools with probing systems3D Scanners
可替换件
RenishawHexagonZeissMitutoyoMahr
0
Tip wear leading to measurement drift
1
Bending or breakage from excessive force
2
Contamination affecting trigger accuracy
3
Thermal expansion in varying environments

合规与检测

tolerance
Tip sphericity: ≤0.1 µm, shaft straightness: ≤1 µm/100 mm
test method
Laser interferometry for dimensional accuracy, repeatability tests per ISO 10360, and material hardness testing per ASTM E384

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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。

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常见问题

What is the purpose of a stylus in a touch-trigger probe?

The stylus physically contacts the workpiece to trigger measurement points, enabling dimensional inspection on CMMs or machine tools.

How do I select the right stylus for my application?

Consider tip diameter (for feature access), length (for reach), material (for wear and compatibility), and stiffness based on measurement speed and accuracy requirements.

Can styluses be interchanged between different probe brands?

No, styluses are often brand-specific due to thread and interface differences, though adapters may allow some cross-compatibility.

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