5G基站滤波器腔体针 / 5G Base Station Filter Cavity Pin — 官网产品中心版
5G基站滤波器腔体针 — 精密走心机加工
产品简介
5G基站腔体滤波器是通信基站射频前端的核心选频组件，腔体针（调谐针/谐振调节销）作为滤波器内部的关键调谐元件，直接影响滤波器的中心频率、带宽和插损性能。昆山图达讯电子科技有限公司采用60余台进口走心机（西铁城Citizen、津上Tsugami、斯大Star），以7075-T6航空级铝合金为基材，通过纵切车铣复合、双主轴同步加工工艺，实现多台阶外圆、精密螺纹段、光滑圆柱段及端面倒角的一次装夹成型，公差稳定控制在±0.003mm（IT5级），表面粗糙度Ra0.2-Ra0.4，阳极氧化银白处理后兼具耐腐蚀与低磁导率特性，充分满足5G射频应用对信号传输稳定性与一致性的严苛要求。
公司始创于1998年，深耕精密走心机加工近三十年，持有IATF16949与ISO9001双体系认证，日产能达50万件，1000件起订并支持打样，为通信设备制造商与滤波器厂商提供高精度、高一致性、快速交付的腔体针批量加工服务。
关键技术参数
表格
| 参数项 | 规格 |
|---|---|
| 产品类别 | 3C电子通信件 |
| 基材 | 7075-T6 铝合金（航空级） |
| 直径范围 | Φ3 – Φ8 mm |
| 典型长度 | 8 – 25 mm |
| 公差等级 | ±0.003 mm（IT5） |
| 表面粗糙度 | Ra0.2 – Ra0.4 |
| 表面处理 | 阳极氧化（银白） |
| 加工工艺 | 走心机纵切 + 车铣复合 + 双主轴同步加工 |
| 几何特征 | 多台阶外圆、精密螺纹段、光滑圆柱段、端面倒角 |
| 最小起订量 | 1,000 件起，支持打样 |
| 日产能 | 50 万件 |
| 质量认证 | IATF16949 + ISO9001 双体系 |
走心机加工六大工艺优势
1. 一次装夹、全序成型
走心机纵切工艺实现多台阶外圆、螺纹段、圆柱段、倒角一次装夹完成，消除二次装夹带来的同轴度误差与接刀痕，确保腔体针各段几何精度高度一致。
2. 双主轴同步加工
西铁城、津上、斯大等进口走心机配备双主轴，正面车削与背面加工同步进行，螺纹段与端面特征可在同一工序内完成，大幅缩短节拍、提升形位公差控制能力。
3. IT5级精密公差
凭借走心机高刚性主轴与精密送料机构，腔体针关键尺寸公差稳定在±0.003mm（IT5级），满足5G滤波器对调谐精度的极高要求，批量产品CPK≥1.33。
4. Ra0.2-Ra0.4镜面级表面
精车配合精整工艺，圆柱段与螺纹段表面粗糙度控制在Ra0.2-Ra0.4，降低高频信号在腔体针表面的趋肤效应损耗，保障射频传输性能稳定。
5. 7075-T6铝合金专用刀方案
针对7075高硬度铝合金材料，选用金刚石涂层刀具与优化切削参数，有效抑制积屑瘤与毛刺，螺纹段牙型清晰、圆柱段无振纹，良品率≥99.5%。
6. 阳极氧化后低磁导率
银白阳极氧化膜层致密均匀，耐腐蚀、绝缘性好、磁导率极低，不干扰腔体内部电磁场分布，特别适合5G基站滤波器射频环境使用。
典型应用场景
1. 5G基站腔体滤波器调谐
腔体针作为腔体滤波器内部的调谐元件，通过旋入深度调节谐振频率，是5G宏基站与微基站滤波器出厂频率校准的关键零件。
2. 射频模块谐振腔调节
在通信设备射频模块中，腔体针用于谐振腔的精确调谐，确保各通道频率响应的平坦度与选择性，保障信号覆盖质量。
3. 基站滤波器耦合元件
腔体针同时承担滤波器级间耦合功能，其精密几何尺寸直接影响耦合系数与带外抑制度，是滤波器整体性能的核心变量之一。
4. 其他高频通信精密结构件
凭借7075-T6铝合金的轻质高强与阳极氧化低磁导率特性，同一工艺平台可扩展应用于射频连接器调谐杆、波导调谐螺钉等高频通信零部件。
公司实力
昆山图达讯电子科技有限公司始创于1998年，深耕精密走心机加工近三十年，现拥有60余台进口走心机（含西铁城Citizen、津上Tsugami、斯大Star等品牌），日产能50万件。公司通过IATF16949与ISO9001双体系认证，建立了从来料检验、首件确认、过程巡检到出货全检的全流程质量管控体系，产品广泛应用于3C电子通信、汽车电子、医疗器械、工业自动化等领域。
询盘与定制
欢迎通信设备制造商、滤波器厂商及采购商来电来图询盘，我们提供从图纸评审、工艺方案优化到批量交付的一站式服务。
- 邮箱： yty@tudasyn.com
- 电话： 18913105795
- 官网： www.tudasyn.com
5G Base Station Filter Cavity Pin — Precision Swiss-Type CNC Machining
Product Overview
The cavity pin (tuning pin / resonator adjustment pin) is a critical tuning element inside cavity filters used in 5G base station RF front-ends. Its dimensional accuracy directly affects the filter's center frequency, bandwidth, and insertion loss performance. Kunshan Tudasyn Electronic Technology Co., Ltd. manufactures 5G base station filter cavity pins from 7075-T6 aerospace-grade aluminum alloy using over 60 imported Swiss-type CNC lathes (Citizen, Tsugami, Star). Our process combines sliding-headstock turning, mill-turn compound machining, and dual-spindle synchronous processing to produce multi-step outer diameters, precision thread sections, smooth cylindrical sections, and chamfered end faces in a single setup. Tolerances are consistently held to ±0.003 mm (IT5 grade), with surface roughness of Ra0.2–Ra0.4. Silver-white anodized finishing provides corrosion resistance and low magnetic permeability, making these pins ideal for 5G RF applications.
Founded in 1998, Tudasyn has been dedicated to precision Swiss-type machining for nearly three decades. We hold dual IATF16949 and ISO9001 certifications with a daily production capacity of 500,000 pieces. Minimum order quantity starts from 1,000 pieces with prototyping support available.
Key Technical Specifications
表格
| Parameter | Specification |
|---|---|
| Product Category | 3C Electronic Communication Components |
| Base Material | 7075-T6 Aluminum Alloy (Aerospace Grade) |
| Diameter Range | Φ3 – Φ8 mm |
| Typical Length | 8 – 25 mm |
| Tolerance Grade | ±0.003 mm (IT5) |
| Surface Roughness | Ra0.2 – Ra0.4 |
| Surface Treatment | Anodizing (Silver White) |
| Machining Process | Swiss-type Sliding Headstock + Mill-Turn Compound + Dual-Spindle Synchronous |
| Geometric Features | Multi-step OD, Precision Thread Section, Smooth Cylindrical Section, Chamfered Ends |
| Minimum Order | 1,000 pcs (prototyping supported) |
| Daily Capacity | 500,000 pieces |
| Quality Certification | IATF16949 + ISO9001 Dual System |
Six Process Advantages of Swiss-Type Machining
1. Single-Setup, Complete Machining
Swiss-type sliding-headstock turning completes multi-step OD, thread sections, cylindrical sections, and chamfers in one clamping. This eliminates coaxiality errors and witness marks from secondary setups, ensuring high geometric consistency across all cavity pin features.
2. Dual-Spindle Synchronous Processing
Our imported Citizen, Tsugami, and Star machines feature dual spindles enabling front turning and back machining simultaneously. Thread sections and end-face features are completed within the same cycle, significantly reducing cycle time and improving geometric tolerance control.
3. IT5-Grade Precision Tolerances
With high-rigidity spindles and precision bar feeding mechanisms, critical cavity pin dimensions are held consistently at ±0.003 mm (IT5). This meets the stringent tuning accuracy requirements of 5G filters, with batch process capability CPK ≥ 1.33.
4. Ra0.2–Ra0.4 Mirror-Quality Surface
Finish turning combined with burnishing processes controls cylindrical and thread section surface roughness to Ra0.2–Ra0.4. This minimizes skin effect losses at high frequencies, ensuring stable RF transmission performance.
5. 7075-T6 Optimized Tooling Strategy
For this high-strength aluminum alloy, we employ diamond-coated cutting tools with optimized cutting parameters to effectively suppress BUE and burrs. Thread profiles are clean, cylindrical sections are chatter-free, and yield rates exceed 99.5%.
6. Anodized Low Magnetic Permeability
The silver-white anodized coating is dense and uniform, offering excellent corrosion resistance, electrical insulation, and extremely low magnetic permeability. It does not interfere with the internal electromagnetic field distribution of the cavity, making it particularly suitable for 5G base station filter RF environments.
Typical Application Scenarios
1. 5G Base Station Cavity Filter Tuning
As tuning elements inside cavity filters, cavity pins adjust resonant frequency through insertion depth. They are essential for factory frequency calibration of both macro and small cell 5G base station filters.
2. RF Module Resonator Adjustment
Within communication equipment RF modules, cavity pins provide precise resonator tuning to ensure channel frequency response flatness and selectivity, safeguarding signal coverage quality.
3. Base Station Filter Coupling Elements
Cavity pins also serve as inter-resonator coupling elements in filters. Their precision geometry directly affects coupling coefficients and out-of-band rejection, making them one of the core variables determining overall filter performance.
4. Other High-Frequency Communication Precision Components
Leveraging the high strength-to-weight ratio of 7075-T6 aluminum alloy and the low magnetic permeability of anodized finish, the same process platform can be extended to RF connector tuning rods, waveguide tuning screws, and other high-frequency communication components.
Company Strengths
Founded in 1998, Kunshan Tudasyn Electronic Technology Co., Ltd. has been dedicated to precision Swiss-type machining for nearly three decades. We operate over 60 imported Swiss-type CNC lathes (including Citizen, Tsugami, and Star brands) with a daily production capacity of 500,000 pieces. Our company holds dual IATF16949 and ISO9001 certifications and has established a comprehensive quality control system spanning incoming inspection, first-article approval, in-process patrol inspection, and final outgoing inspection. Products are widely used in 3C electronic communications, automotive electronics, medical devices, and industrial automation.
Inquiry & Customization
We welcome communication equipment manufacturers, filter companies, and procurement teams to contact us for quotations. We provide one-stop services from drawing review, process optimization, to mass production delivery.
- Email: yty@tudasyn.com
- Phone: +86-18913105795
- Website: www.tudasyn.com
