行业组件数据 · 2026

内孔/腔体

繁體:內孔/腔體

内孔或腔体是锁紧机构本体中的关键精密加工特征,通常为具有严格尺寸公差和特定表面粗糙度要求的圆柱形腔体。

技术定义与适配语境
典型 内孔/腔体 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。

内孔或腔体是锁紧机构本体中的关键精密加工特征,通常为具有严格尺寸公差和特定表面粗糙度要求的圆柱形腔体。它用作锁紧机构中销、柱塞或其他内部部件的容纳和导向表面,确保正确对中、平稳运行和可靠接合。其几何形状、同轴度和表面完整性直接影响机构的可靠性、力分布和耐磨性。 内孔为内部锁紧部件提供受控的低摩擦路径和精确对中。它将部件的运动限制在确定的轴线上,确保接合和分离力正确施加。腔体还可设计为产生特定压力区或容纳润滑剂。其工作原理基于提供几何约束和表面导向,将线性或旋转输入转换为可靠的锁紧动作。

组件规格

定义
内孔或腔体是锁紧机构本体中的关键精密加工特征,通常为具有严格尺寸公差和特定表面粗糙度要求的圆柱形腔体。它用作锁紧机构中销、柱塞或其他内部部件的容纳和导向表面,确保正确对中、平稳运行和可靠接合。其几何形状、同轴度和表面完整性直接影响机构的可靠性、力分布和耐磨性。

内孔为内部锁紧部件提供受控的低摩擦路径和精确对中。它将部件的运动限制在确定的轴线上,确保接合和分离力正确施加。腔体还可设计为产生特定压力区或容纳润滑剂。其工作原理基于提供几何约束和表面导向,将线性或旋转输入转换为可靠的锁紧动作。
工作原理
The internal bore provides a controlled, low-friction pathway and precise alignment for internal locking components. It constrains their movement to a defined axis, ensuring that engagement and disengagement forces are applied correctly. The chamber may also be designed to create specific pressure zones or contain lubricants. Its working principle is based on providing geometric constraint and surface guidance to translate linear or rotational input into a secure locking action.
材料
通常由合金钢(如AISI 4140、4340)、不锈钢(如304、316、17-4PH)或工具钢加工而成通常随后进行热处理(渗碳、渗氮、感应淬火)以达到表面硬度(如45-60 HRC)和芯部韧性。替代材料包括铝合金(如6061-T6、7075-T6)用于轻量化应用或青铜/铜合金用于轴承表面。
Depth/Length
As per assembly requirement, tolerance ±0.1mm
Straightness
≤0.01mm per 100mm length
Bore Diameter
Tolerance: ±0.01mm to ±0.05mm (h6 to h9)
Concentricity
≤0.02mm TIR relative to primary datum
Surface Finish
Ra 0.4μm to 1.6μm (16μin to 63μin)
Chamfer/Edge Break
0.1mm to 0.5mm, mandatory for assembly and stress reduction
标准
ISO 286-1ISO 1302DIN 7154DIN 7155

行业分类与别名

内孔/腔体 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

Abrasive contamination or inadequate lubrication.->Increased bore diameter due to wear, leading to excessive clearance, component rattle, and loss of precise alignment.->Implement strict filtration for lubricants, specify hardened/coated bore surfaces, and design for easy lubrication access.
Machining error or residual stress causing distortion.->Bore out-of-roundness or loss of straightness, resulting in binding of internal components and erratic locking force.->Specify stress-relief heat treatment post-machining, use precision boring/grinding processes, and implement rigorous in-process inspection (e.g., air gauging).
Corrosive environment (moisture, chemicals).->Pitting or general corrosion on the bore surface, increasing friction, creating stress concentrations, and potentially leading to seizure.->Select corrosion-resistant materials (stainless steel, coated steels), apply protective coatings (e.g., zinc-nickel, DLC), and specify regular maintenance cleaning.

工业生态与工程逻辑

0
Dimensional wear leading to increased clearance and mechanism slop
1
Surface scoring or galling from abrasive particles or lack of lubrication
2
Concentricity error causing binding or uneven wear
3
Corrosion in harsh environments compromising surface integrity

合规与检测

tolerance
Geometric tolerances per ISO 1101; Size tolerances per ISO 286 (ISO system of limits and fits). Critical features typically held to IT6 or IT7 grade.
test method
Dimensional verification via coordinate measuring machine (CMM) or precision bore gauges. Surface finish measured with profilometer (contact or non-contact). Hardness testing (Rockwell C) for heat-treated surfaces. Functional testing via assembly with master pins/plungers to check for smooth operation and required clearance.

制造该组件的工厂

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 most critical tolerance for an internal bore in a locking mechanism?

The bore diameter tolerance is most critical, as it directly affects the fit with moving components (clearance or interference fit), influencing operational smoothness, wear rate, and locking force consistency.

How does surface finish impact the performance of the internal chamber?

Surface finish (Ra value) directly affects friction, wear resistance, and lubricant retention. A smoother finish reduces friction and adhesive wear, while a controlled roughness can improve lubricant film retention. An improper finish can lead to galling, increased operating force, and premature failure.

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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:INTERNAL_BORE_CHAMBER