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TUOWEI Precision offers advanced CNC machining solutions for high-precision metal and plastic components, designed to meet the most demanding manufacturing needs.
Tuowei Precision delivers advanced custom CNC machining services to engineers, product developers, and designers through our trusted network of certified manufacturing partners. Whether your design is simple or highly complex, our precision machine shops can handle everything from rapid prototypes and small-batch machining to high-volume production runs.
With our streamlined online process, you can easily upload your CAD file and receive an instant quote with pricing, lead times, and design-for-manufacturability insights. We maintain strict quality standards with ISO 9001:2015, ISO 13485, IATF 16949:2016, and AS9100D certifications, along with ITAR registration. For added assurance, we also offer inspection options, hardware traceability, material certifications, and Certificates of Conformance (CoCs).
CNC machining (Computer Numerical Control machining) is a highly precise and automated manufacturing process that uses computer-controlled cutting tools to shape designs from metal or plastic stock. Depending on the complexity of the project, CNC machines can range from 3-axis and 4-axis milling machines to advanced 5-axis systems, lathes, and routers.
The way a part is machined can vary, sometimes the tool moves while the workpiece stays fixed, sometimes the workpiece rotates while the tool remains in place, and in many cases, both tool and workpiece move together to achieve complex geometries.
Using CAD (computer-aided design) models, skilled machinists program the machine to follow exact tool paths, ensuring that each part is cut with exceptional precision and repeatability.
TOUWEI is your trusted partner for high-quality prototypes and end-use machined parts, from simple to highly complex designs. With 700+ advanced CNC machines, we provide milling, turning, routing, EDM machining, drilling, and precision grinding. Our ISO 9001 certification and skilled expertise ensure accuracy and consistency in every project.
With over 200 dedicated milling centers, including 3-axis, 4-axis, and advanced 5-axis CNC mills, TOUWEI delivers tight-tolerance components and intricate geometries in both plastics and metals. We serve multiple industries while also specializing in precision mold making.
Our CNC lathes, turning centers, and mill-turn machines enable us to produce precise cylindrical parts, along with components from square or hexagonal raw materials. TOUWEI provides both prototype and production parts with rapid lead times, often delivered within just a few days.
Our CNC machines operate with precision tolerances that meet industry standards, ensuring that every part is consistently accurate and fits perfectly with other components.
| Feature Type | Typical Tolerance |
|---|---|
| General Dimensional Tolerance | ±0.025 mm (±0.001") |
| High Precision Tolerance | ±0.005 mm (±0.0002") |
| Hole Diameter (Drilled) | ±0.05 mm (±0.002") |
| Hole Diameter (Reamed/Bored) | ±0.01 mm (±0.0004") |
| Shaft Diameter (Turned) | ±0.01 mm (±0.0004") |
| Flatness | 0.02 mm per 100 mm |
| Parallelism | ±0.02 mm |
| Perpendicularity | ±0.02 mm |
| Surface Roughness (Ra) | 1.6–3.2 µm (63–125 µin) |
| Positional Tolerance | ±0.01 mm to ±0.02 mm |
| Thread Tolerance (Cut) | 6H / 6g (ISO) or Class 2A/2B (ANSI) |
| Minimum Feature Size | 0.5 mm (0.020") |
| Repeatability | ±0.005 mm (±0.0002") |
Get the most out of your CNC machining projects with TUOWEI’s precision-driven design guidelines. Our engineering team reviews your custom part designs and offers expert advice to ensure optimal performance, cost-efficiency, and manufacturability.
| Feature | Specification / Guideline |
|---|---|
| Radii | Sharp inside corners become natural radii due to tool shape. Drilling depth ≤ 12× tool diameter, End milling depth ≤ 10× cutter diameter |
| Threads & Tapped Holes | Φ 1.5–5 mm: depth = 3× diameter; Φ ≥ 5 mm: depth = 4–6× diameter; custom thread sizes available on request |
| Undercuts | Supported types: Square profile, Full radius profile, Dovetail profile |
| Text – CNC Milling | Minimum line width: 0.5 mm; minimum depth: 0.1 mm |
| Text – CNC Turning | Laser marking available for precision text |
| Engraving Options | CNC engraving and laser engraving available as per customer requirement |
| Aluminium Alloy | Description | Finishing Options | Applications |
|---|---|---|---|
| 6061 | Versatile and commonly used for structural applications. | Anodizing, Powder Coating, Polishing | Construction, Aerospace, Automotive |
| 7075 | High strength, ideal for aerospace and military applications. | Anodizing, Powder Coating, Polishing | Aerospace, Military, High-Strength Components |
| 2024 | Known for its high strength and excellent fatigue resistance. | Anodizing, Cladding, Painting | Aerospace, Military, Structural Components |
| 5052 | Good corrosion resistance and formability, used in marine and automotive applications. | Anodizing, Painting, Polishing | Marine, Automotive, Sheet Metal Work |
| 5083 | Exceptional performance in extreme environments, particularly marine applications. | Anodizing, Painting, Polishing | Marine, Chemical, Industrial |
| 6082 | Excellent extrudability, used for architectural and engineering applications. | Anodizing, Powder Coating, Polishing | Architecture, Engineering, Window Frames |
| 7050 | High strength and stress corrosion resistance, often used in aerospace. | Anodizing, Cladding, Painting | Aerospace, High-Stress Components |
| 1100 | Commercially pure aluminum, excellent corrosion resistance and workability. | Anodizing, Painting, Polishing | Chemical Equipment, Food Processing, Heat Exchangers |
| Brass Alloy | Description | Finishing Options | Applications |
|---|---|---|---|
| C260 | Cartridge brass, excellent for cold working. | Plating, Polishing, Lacquering | Ammunition, Heat Exchangers, Plumbing |
| C360 | Free machining brass, used for precision parts. | Plating, Polishing, Lacquering | Precision Machined Parts, Fasteners, Plumbing |
| C353 | High leaded brass, high strength, used in plumbing. | Plating, Polishing, Lacquering | Plumbing, Fasteners, Valve Components |
| C385 | Architectural bronze, applications for its decorative appeal. | Plating, Polishing, Lacquering | Architectural Trim, Ornamental Hardware, Plumbing |
| C272 | Yellow brass, excellent corrosion resistance, used in electrical components. | Plating, Polishing, Lacquering | Electrical Components, Fasteners, Plumbing |
| Copper Alloy | Description | Finishing Options | Applications |
|---|---|---|---|
| C101 | Oxygen-free, high conductivity, used in electrical applications. | Plating, Polishing, Lacquering | Electrical Conductors, Switches, Terminals |
| C110 | Electrolytic tough pitch, highly conductive, used in electrical and plumbing. | Plating, Polishing, Lacquering | Electrical Wiring, Plumbing, Busbars |
| C122 | Phosphorus-deoxidized, used in heat exchangers and radiators. | Plating, Polishing, Lacquering | Heat Exchangers, Radiators, Plumbing |
| C172 | Beryllium copper, high strength, used in aerospace and oil drilling. | Plating, Polishing, Lacquering | Aerospace, Oil Drilling, Springs |
| C194 | High conductivity, used in automotive and electrical applications. | Plating, Polishing, Lacquering | Automotive Connectors, Electrical Connectors, Springs |
| C210 | Low brass, good ductility and strength, used in fasteners and hardware. | Plating, Polishing, Lacquering | Fasteners, Hardware, Musical Instruments |
| C220 | Commercial bronze, used in jewelry and musical instruments. | Plating, Polishing, Lacquering | Jewelry, Musical Instruments, Architectural Hardware |
| C230 | Red brass, used in architectural applications and hardware. | Plating, Polishing, Lacquering | Architectural Applications, Hardware, Plumbing |
| Grade | Description | Finishing Options | Applications |
|---|---|---|---|
| 301 | Excellent machinability, used for making automotive parts bolts, nuts, and screws. | Polishing, Passivation, Bead blasting | Used for making automotive parts, bolts, nuts, and screws. |
| 304 | Most versatile and widely used stainless steel, used in kitchen equipment tanks, piping, and tubing. | Polishing, Brushing, Passivation | Used in kitchen equipment, tanks, piping, and tubing. |
| 304L | Low carbon version of 304, used for chemical containers and transport. | Electropolishing, Passivation, Bead blasting | Used for chemical containers and transport. |
| 316 | Contains molybdenum for increased corrosion resistance, used in marine applications and chemical processing equipment. | Polishing, Passivation, Bead blasting | Used in marine applications and chemical processing equipment. |
| 316L | Low carbon version of 316, used for surgical instruments and marine hardware. | Electropolishing, Passivation, Bead blasting | Used for surgical instruments and marine hardware. |
| 410 | Martensitic grade, used for fasteners and medical instruments. | Hardening, Polishing, Passivation | Used for fasteners and medical instruments. |
| 416 | High machinability, used for gears, shafts, and valves. | Polishing, Passivation, Bead blasting | Used for gears, shafts, and valves. |
| 420 | High hardness, used for surgical instruments and cutlery. | Hardening, Polishing, Passivation | Used for surgical instruments and cutlery. |
| 430 | Ferritic grade, used for automotive trim and dishwashers. | Polishing, Brushing, Passivation | Used for automotive trim and dishwashers. |
| Steel Alloy | Description | Finishing Options | Applications |
|---|---|---|---|
| 4140 | Chromium-molybdenum steel with high toughness and good fatigue strength. | Heat Treating, Anodizing, Powder Coating | Gears, Shafts, High-Stress Components |
| 4340 | Nickel-chromium-molybdenum steel with excellent toughness and strength. | Heat Treating, Anodizing, Powder Coating | Aircraft Landing Gear, Automotive Parts, Heavy Duty Shafts |
| 8620 | Nickel-chromium-molybdenum alloy steel, case hardening steel. | Carburizing, Heat Treating, Plating | Gears, Pins, Automotive Parts |
| 1018 | Low carbon steel, good weldability and machinability. | Painting, Powder Coating, Galvanizing | Structural Applications, Shafts, Spindles |
| 1045 | Medium carbon steel, high strength and impact resistance. | Heat Treating, Plating, Painting | Gears, Shafts, Machinery Parts |
| 4130 | Chromium-molybdenum alloy steel, good strength and toughness. | Heat Treating, Anodizing, Powder Coating | Aircraft Components, Bicycle Frames, Automotive Parts |
| 1210 | Low carbon steel, good formability and weldability. | Galvanizing, Painting, Powder Coating | Automotive Parts, Machinery Components, Structural Steel |
| 17-4 PH | Precipitation-hardening stainless steel, high strength and hardness. | Heat Treating, Anodizing, Passivation | Aerospace Components, High-Strength Applications |
| Titanium Alloy | Description | Finishing Options | Applications |
|---|---|---|---|
| Grade 1 | Commercially pure titanium, excellent corrosion resistance and formability. | Anodizing, Polishing, Sandblasting | Chemical Processing, Marine, Medical |
| Grade 2 | Commercially pure titanium, balance of strength and ductility. | Anodizing, Polishing, Sandblasting | Aerospace, Medical, Marine |
| Grade 5 (Ti-6Al-4V) | Most commonly used titanium alloy, high strength and light weight. | Anodizing, Polishing, Heat Treating | Aerospace, Medical Implants, Marine |
| Grade 9 | Titanium alloy with good weldability and cold formability. | Anodizing, Polishing, Sandblasting | Aerospace, Chemical Processing, Marine |
| Grade 23 (Ti-6Al-4V ELI) | Extra-low interstitial variant of Grade 5, high strength and toughness. | Anodizing, Polishing, Heat Treating | Medical Implants, Aerospace, Marine |
| Grade 7 | Commercially pure titanium with excellent corrosion resistance. | Anodizing, Polishing, Sandblasting | Chemical Processing, Marine, Medical |
| Grade 12 | Titanium alloy with excellent corrosion resistance and strength. | Anodizing, Polishing, Heat Treating | Chemical Processing, Marine, Aerospace |
| Plastic Material | Description | Finishing Options | Applications |
|---|---|---|---|
| ABS | Acrylonitrile Butadiene Styrene, good impact resistance and toughness. | Painting, Plating, Sanding | Automotive Parts, Consumer Products, Enclosures |
| PC | Polycarbonate, high impact resistance and transparency. | Polishing, Sandblasting, Painting | Optical Discs, Safety Equipment, Automotive Parts |
| PMMA | Polymethyl Methacrylate (Acrylic), excellent optical clarity and weather resistance. | Polishing, Sanding, Painting | Displays, Lenses, Lighting Fixtures |
| POM | Polyoxymethylene (Delrin/Acetal), high stiffness and low friction. | Machining, Sanding, Polishing | Gears, Bearings, Medical Devices |
| PEEK | Polyetheretherketone, high temperature and chemical resistance. | Machining, Sanding, Polishing | Aerospace, Medical Implants, Semiconductor Parts |
| PP | Polyphenylene , high mechanical and thermal properties. | Machining, Sanding, Polishing | Automotive, Electrical Components, Industrial Applications |
| PA66 | Polyamide (Nylon 66), high mechanical strength and rigidity. | Machining, Sanding, Polishing | Mechanical Parts, Automotive, Electrical Insulation |
| PEI | Polyetherimide (Ultem), high strength and excellent electrical properties. | Machining, Sanding, Polishing | Aerospace, Medical Devices, Electrical Components |
| SAN | Styrene Acrylonitrile, good chemical resistance and transparency. | Machining, Sanding, Polishing | Housewares, Cosmetic Containers, Automotive Parts |
| HIPE | High Impact Polystyrene, good impact resistance and machinability. | Machining, Sanding, Painting | Packaging, Consumer Products, Electrical Insulation |
| HIPD | High Impact Polypropylene, high impact resistance and low density. | Machining, Sanding, Painting | Automotive Parts, Industrial Applications, Consumer Goods |
| Fiber-Reinforced Materials | Composite materials with enhanced mechanical properties. | Machining, Sanding, Painting | Aerospace, Automotive, Sporting Goods |
With Tuowei Precision’s CNC milling service, you’re not just investing in advanced machinery. You’re gaining the assurance of flawless precision, commitment to strict timelines, and the expertise of skilled professionals dedicated to meeting your needs.
Tuowei Precision’s ISO-certified CNC machining guarantees exceptional accuracy and quality. Every part is crafted for perfect fit and flawless performance, with rigorous quality control at each stage.
Stay on schedule with Tuowei Precision. Our state-of-the-art equipment and local workshops deliver rapid production to meet your tight deadlines.
Rely on our team for comprehensive CNC machining support. Our experts are available to optimize design efficiency and ensure top-quality results at every step.
从详细的原型到大批量生产，TUOWEI 是您值得信赖的精密 CNC 加工合作伙伴。今天就联系我们，迈出简化、高质量制造解决方案的第一步。.
无论您是创建小批量定制零件，还是扩大规模进行大批量生产，拓威 Proto 服务都能为您提供所需的灵活性。.
数控快速原型加工是创建工程或生产原型的完美选择，这些原型在外观和功能上都与最终产品非常相似。在拓维，我们提供即时报价和快速交付，为您提供精确、高质量的 CNC 加工原型，以满足您的需求。.
小批量数控加工通常是新兴产品从原型设计到批量生产之间的桥梁。有了拓威，这一过程变得更加简单、高效和经济，使您能够在保持高质量标准的同时迅速扩大生产规模。.
数控生产加工是高效生产千件或更多零件的最佳解决方案。拓威利用多样化的材料选择、自动化和多轴加工能力，实现了大批量生产，具有公差小、尺寸精度高、可靠性高和周转时间短等特点。.
了解拓威团队的专业技巧、行业趋势和精密制造见解，保持领先地位。阅读我们的最新博客，获取有价值的知识，了解我们如何塑造数控生产的未来。.
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数控加工是如何工作的？
数控加工是一种减法制造工艺，通过精确去除材料，将原材料加工成最终形状。这包括钻孔、镗槽、开路以及将原材料切割成不同形状、直径和锥度的零件。. 与逐层构建形状的快速成型制造或在模具中使用熔融材料成型零件的注塑成型不同，数控加工通过减法实现精度。.
其多功能性使数控加工能够加工金属、塑料、木材、复合材料、泡沫甚至玻璃。这种广泛的材料兼容性使其成为各行各业值得信赖的选择，帮助工程师和设计师准确、高效地将概念变为现实。.
数控加工与传统加工有何不同？
传统的机械加工依赖于手工操作，机械师使用手控装置、刻度盘和测量工具，根据设计图纸塑造和检查零件。熟练的操作员进行切割、钻孔、铣削或打磨，主要依靠手工操作的精度。.
数控加工执行相同的流程，但通过计算机数控实现自动化。程序使用笛卡尔坐标引导切削工具，实现精确性和可重复性--无论是第一次切削还是第 500 次切削。.
这种自动化使数控加工更加精确、一致和可扩展。它在很大程度上取代了工业生产中的传统方法，但仍使用类似的切割和成型基本原理。.
我是否需要为国际生产的部件支付关税？
杜维确保价格透明。对于国际订单，关税和运费已包含在标准包裹的最终报价中，因此没有任何隐藏费用。.
您是否提供快速车削 CNC 加工？
是的。TUOWEI 提供快速数控加工服务，许多零件的交付周期短至 3-4 天。对于紧急项目，我们提供加急选项，并与客户密切合作，确保在不影响质量的情况下按期完成。.
哪些行业使用数控加工？
数控加工广泛应用于各行各业。它在航空航天、汽车、医疗设备、消费电子、机器人、能源和通信领域发挥着重要作用。它还应用于石油和天然气、农业、家居用品和工业设备。.
它能够提供精度、速度和多功能性，使其成为全球应用最广泛的制造工艺之一。.
数控加工的历史是怎样的？
数控加工的起源可以追溯到第二次世界大战，当时对飞机、船舶和车辆高效生产的需求达到了顶峰。约翰-T.-帕森斯（John T. Parsons）当时正在研究直升机旋翼，他是最早探索用计算方法实现复杂形状加工的人之一。.
在他的工作基础上，麻省理工学院的伺服机械实验室开发出了使用数控和笛卡尔坐标来自动完成制造任务的机器。这一突破为现代数控加工奠定了基础。.
数十年来，数控技术飞速发展，如今已发展成为由软件驱动的复杂系统，能够以超高的精度和速度生产零件。.
数控加工的检测选项有哪些？
杜威根据客户要求提供多种检测解决方案。每个零件都要经过标准检验，检验费用包含在报价和交付周期内。对于需要高级验证的项目，我们提供详细的检验选项，如尺寸报告、坐标测量机检查和全面质量认证。.