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Custom Online CNC machining Services
At Lewei, we offer effective CNC machining services, which serve both metal and plastic components. We will ensure accuracy, speed and on-time delivery of your custom parts whether you are working with a single prototype or large scale production.
- Certificación ISO 9001:2015, ISO 13485, ISO14001:2015, IATF 16949:2016.
- Be accurate, quick, and deliver on-time on the custom parts.
- Close tolerances and short fuses in order to make your designs come to life.
- Assured quality output with each project.
Upload your CAD files with us and get an immediate quote. Achieve precision and reliability in your project.
Servicios de mecanizado CNC para piezas personalizadas
In Lewei Precision, we deal with CNC machining of metal and plastic components. Our CNC machines include more than 700 CNC machines that are used in CNC milling, CNC turning, and CNC routing of prototyped images and large production. Our certification ISO 9001 is a guarantee of close tolerance and timely delivery of all projects.
We have the capability to machine complex parts with precision and speed and we have 3 axis, 4-axis and 5-axis machines. CNC milling services are available with tight tolerances or great surface finishes on metal and plastic parts, whether it is a prototype or a production run, and it is done fast and to the precise specifications.m machined parts, whether simple or complex. With over 700 CNC machines in-house, we offer milling, turning, routing, EDM machining, drilling, and precision grinding services.ject.
CNC turning is ideal in the production of cylindrical components such as pins, bushes, and shafts. We have high-precision turning to tight tolerances of up to ±0.001 inches utilizing high-end 3-axis, 4-axis and 5-axis turning machines. Small-scale prototypes or high volume production, we will provide your industry with high-quality, consistent components in the automotive, medical and aerospace sectors.
Una sólida red de máquinas CNC
Lewei Precision dispone de un taller especializado en máquinas CNC y colabora con una amplia red de instalaciones en toda China. Nuestras capacidades van más allá de las máquinas CNC estándar, con rectificadoras para acabados lisos, cortadoras de hilo para precisión y máquinas de electroerosión para formas complejas. Esta variedad nos permite manejar diseños intrincados y producir piezas mecanizadas por CNC que cumplen especificaciones exactas, todo ello manteniendo tolerancias tan estrechas como 0,01 mm para una integración perfecta en conjuntos más grandes.
Además, utilizamos líneas de producción automatizadas en las que las máquinas trabajan juntas a la perfección, garantizando una producción de gran volumen con errores mínimos. Este eficiente sistema ayuda a mantener los proyectos dentro de los plazos previstos, al tiempo que ofrece resultados uniformes y mantiene los más altos estándares de calidad.
Materiales de mecanizado CNC
Our CNC machining services support engineering-grade metals and plastics used for precision milled and turned parts.
All materials listed below are supplied in machinable stock suitable for CNC processing.
Lightweight, corrosion-resistant, and highly machinable for precision and structural parts.
Grades
6061
6061-T6
6082
7075
7075-T6
2024
High electrical and thermal conductivity for conductive components.
Grades
C110
C101
Easy to machine with excellent surface finish for precision parts.
Grades
C360
C260
C280
Hard, wear-resistant material for tooling and high-stress components.
Grades
D2
A2
H13
High strength material for load-bearing and mechanical components.
Grades
1018
1020
1045
4140
EN8
EN19
Corrosion-resistant material for industrial, food, and medical components.
Grades
304
304L
316
316L
303
17-4 PH
Ultra-lightweight metal for weight-critical machined components.
Grades
AZ31
AZ91
High strength-to-weight ratio with excellent corrosion resistance.
Grades
Grade 2
Grade 5
Plásticos
Impact-resistant plastic for enclosures and functional components.
Grades
ABS Natural
ABS Negro
ABS Antistatic
High impact strength for protective and structural components.
Grades
Clear PC
Black PC
Rigid plastic with excellent optical clarity.
Grades
Clear PMMA
Black PMMA
Low friction and high dimensional stability for precision components.
Grades
POM-C
POM-H
Strong and wear-resistant plastic for mechanical parts.
Grades
PA6
PA66
Glass-Filled PA
Very low friction and high wear resistance for sliding components.
Grades
UHMW Natural
High-performance plastic for extreme temperature and chemical conditions.
Grades
Virgin PEEK
Glass-Filled PEEK
Carbon-Filled PEEK
Lightweight and chemical-resistant plastic for non-structural parts.
Grades
PP Homopolymer
CNC Machining Tolerance
| Feature / Condition | Standard Tolerance | Tolerancia estricta | Engineer Reality Notes |
|---|---|---|---|
| General Linear Dimensions | ±0.10 mm | ±0.05 mm | Most CNC parts run here without cost explosion |
| Tight Linear Dimensions | ±0.05 mm | ±0.01 mm | Requires stable setup, sharp tools, temperature control |
| Hole Diameter (reamed) | ±0,02 mm | ±0.01 mm | Drilled holes alone won’t hit tight tolerance |
| Hole Position | ±0.05 mm | ±0,02 mm | Fixture accuracy matters more than machine |
| Shaft Diameter | ±0,02 mm | ±0.01 mm | Tool wear directly affects size |
| Planitud | 0.05 mm / 100 mm | 0.02 mm / 100 mm | Material stress relief matters |
| Parallelism | 0.05 mm | 0.02 mm | Multi-setup parts increase risk |
| Perpendicularidad | 0.05 mm | 0.02 mm | Requires probing & controlled referencing |
| Surface Finish (Ra) | 3.2 µm | 1.6 µm | Below this = secondary finishing |
| Threaded Features | ISO 6H / 6g | ISO 5H / 5g | Class depends on material & tool condition |
Mecanizado CNC Acabados superficiales
Discover high-end surface finishing solutions that improve the functionality, appearance, and longevity of your CNC-machined parts. Simple or high-performance finish, we offer customized solutions to each project.
As-milled finish It exhibits tool marks on the surface and a surface roughness of ~125 µin Ra. As-milled finish is used on functional parts where it is not critical to have a smooth finished part but where strength and longevity are needed.
Bead blasting produces a smooth, matte finish where abrasive media is directed to provide aesthetics of a pleasing surface uniformity and also enhances part integrity and performance.
This is a permanent coating that gives it enormous corrosion, UV, and wear resistance. Powder coating is ideal in those parts that need durable protection without compromising appearance.
By brushing, one attains a satin-like finish, which is done by applying a uniform grain texture. It is a perfect match on non-reflective surfaces and gives a good look as well as offers a smooth surface to the decoration.
Polishing provides a mirror-like smooth finish and enhances aesthetic quality of components. It is the ideal product to be used in a situation when the aesthetics and performance are to be considered simultaneously, which creates a smooth, shiny surface.
During electropolishing, a coated layer of metal is removed enhancing the surface smoothness and corrosion resistance. It improves the quality of parts by creating less friction and consequently is best suited to the parts that need a high level of finishing.
Size & Machine Limitations
At Lewei Precision, we offer precise CNC machining services with the following size and machine limitations:
| Process / Capability | Maximum Dimensions / Limits | Descripción |
|---|---|---|
| 3-Axis Milling | 700 × 400 × 300 mm | For simple geometries and fast production runs |
| 4-Axis Milling | 600 × 350 × 300 mm | Ideal for parts requiring additional rotation for more complex shapes |
| 5-Axis Milling | 500 × 350 × 300 mm | Perfect for intricate and detailed parts with complex geometries |
| Torneado CNC | Ø300 mm diameter × 500 mm length | Used for precision cylindrical components like shafts and bushings |
| Turning with Live Tooling | Ø250 mm diameter | Offers additional milling capabilities on turning machines for complex parts |
| Minimum Wall Thickness – Metals | ≥ 0.8–1.0 mm | Ensures structural integrity |
| Minimum Wall Thickness – Plastics | ≥ 1.2–1.5 mm | Ensures structural integrity |
| Minimum Hole Diameter | ≥ 1 mm | Precise feature size requirement |
Directrices de diseño para el mecanizado CNC
Optimice sus diseños para la fabricación con nuestras directrices de expertos. Lewei Precision proporciona valiosos comentarios sobre sus piezas mecanizadas a medida para garantizar los mejores resultados en el mecanizado CNC.
| Características | Descripción |
|---|---|
| Radios | Las esquinas internas afiladas forman radios redondeados. Profundidad: ≤ 12 veces el diámetro de perforación para brocas. Profundidad: ≤ 10 veces el diámetro de la herramienta para fresas de mango. |
| Roscas y orificios roscados | For diameters Φ 1.5–5 mm, depth should be 3 times the diameter. For diameters Φ 5 mm or larger, depth should be 4–6 times the diameter. Se pueden fabricar roscas de cualquier especificación y tamaño según los requisitos del cliente. |
| Socava | Se consigue con perfiles cuadrados, de radio completo y de cola de milano mediante un mecanizado preciso. |
| Texto | Fresado CNC: Anchura mínima de 0,5 mm y profundidad de 0,1 mm. Torneado CNC: Marcado por láser o grabado CNC/grabado por láser disponible para texto estándar, según especificaciones del cliente. |
Soluciones de precisión Lewei
Los servicios de Lewei Precision le ofrecen la flexibilidad que necesita, tanto si está creando un pequeño lote de piezas personalizadas como si está aumentando la producción a gran escala.
Mecanizado CNC de precisión con calidad constante
At Lewei Precision, precision and quality are the main focus in all the stages of CNC machining. We have a sophisticated inspection system that ensures that every part that is produced is of high industry standards in terms of accuracy and performance (prototype or high volume production).
Dimensional Accuracy
Inspections of all parts are done with CMM (Coordinate Measuring Machines), optical scanners and digital micrometers. This will provide a high level of accuracy at the micron level and your components will be in the exact specifications to ensure they work perfectly.
GD&T & Tolerance Verification
We use ISO 2768-mK and ASME Y14.5 verification measures of GD&T, making sure that there is dimensional and geometric accuracy. Every component is subjected to stringent inspections in order to satisfy the necessary levels of tolerances and quality.
Surface & Finish Testing
Our team will measure surface roughness (Ra) within the range of 3.20-0.8 μm and coating thickness check. This provides the continuity of visual attractiveness as well as upholding the functional integrity of your components.
Traceability/ Documentation.
Each project will contain such important documentation as Material Test Reports (MTRs), First Article Inspection (FAI) report, and CMM data sheet. This gives 100% traceability and transparency of the manufacturing process.
CNC machine process in Lewei Precision.
In Lewei Precision, we have a systematic CNC machining production line, which is efficient and accurate at each production line.
Engineering Review
Our team will review your CAD files thoroughly to determine its viability, possible problems, and that your design meets production criteria.
Programación CAM
After reviewing the design, we code the machining process with sophisticated CAM software to outline tool paths and maximize efficiency.
Multi-Axis Machining
We produce your parts using the best available multi axis CNC machine that is highly precise and complex in nature.
CMM Inspection
Components are carefully examined with Coordinate Measuring Machines (CMM) to ensure dimensional precision and adherence to quality standards.
Soluciones de mecanizado CNC de precisión Lewei
Our CNC machining services cater to all production needs, from rapid prototyping to large-scale manufacturing, ensuring precision and quality at any volume.
CNC rapid prototyping is perfect for creating accurate prototypes that closely resemble the final product. Get precise, high-quality prototypes delivered fast with instant quotes.
- Plazo de entrega: 1-5 días laborables
- Capacidad: 1-100 unidades
- Descuento de 20%
For businesses transitioning from prototypes to mass production, our low-volume CNC machining offers cost-effective, flexible solutions while maintaining high quality.
- Plazo de entrega: 5-15 días laborables
- Capacidad: 101-10.000 unidades
- Calidad constante
Scale up with our CNC machining services for high-volume production, offering tight tolerances, fast turnaround times, and reliable results.
- Plazo de entrega: 2-4 semanas
- Capacidad: Más de 10.001 unidades
- Efficient and precise
Ventajas
Ventajas del fresado CNC
El fresado CNC ofrece una serie de ventajas que garantizan una producción eficaz y de alta calidad.
- Alta precisión: Las fresadoras CNC ofrecen tolerancias muy ajustadas, lo que garantiza una gran precisión y uniformidad en cada pieza.
- Creación de diseños complejos: Con el movimiento multieje, el fresado CNC puede crear formas intrincadas y características complejas que son difíciles de conseguir manualmente.
- Mayor eficiencia: Los procesos automatizados permiten una producción continua, lo que reduce los plazos de entrega y aumenta la productividad al minimizar los tiempos de inactividad.
- Flexibilidad del material: El fresado CNC trabaja con diversos materiales, como metales, plásticos y materiales compuestos, por lo que se adapta a numerosas aplicaciones.
- Reproducción coherente: Una vez programado el diseño, la máquina puede reproducir las piezas con una coherencia perfecta, reduciendo así los errores humanos.
- Velocidad:Aunque los costes iniciales de preparación son elevados, la eficacia y precisión del fresado CNC reducen los costes totales de producción, sobre todo en grandes tiradas.
Aplicaciones
Aplicaciones del fresado CNC
El fresado CNC se utiliza ampliamente en diversas industrias para producir piezas y componentes de alta precisión:
- Piezas de motor:Esencial para la fabricación de bloques de motor, culatas y pistones, garantizando la durabilidad y el rendimiento en los sectores automovilístico y aeroespacial.
- Componentes del engranaje: Fundamental para producir engranajes, estrías y ejes con tolerancias estrechas, ampliamente utilizados en maquinaria y sistemas de automoción.
- Productos sanitarios:Se utiliza para crear implantes de gran precisión, como articulaciones de cadera, implantes dentales y tornillos quirúrgicos para el sector sanitario.
- Recintos electrónicos:Fabrica carcasas para dispositivos electrónicos, que ofrecen un ajuste seguro y protección para placas de circuitos sensibles.
- Prototipos a medida: Permite la creación rápida de prototipos para pruebas de diseño e iteración, lo que permite a los diseñadores perfeccionar sus productos antes de la producción en serie.
- Herramientas y matrices: Clave para la fabricación de moldes, matrices y herramientas de corte que se utilizan en diversos procesos de producción.
Comience su proyecto de mecanizado CNC
Mecanizado CNC para diversas industrias
At Lewei Precision, CNC machining services are implemented with regards to distinctive needs of industries and provide high-quality and dependable solutions to the projects of all dimensions. We deliver high quality components across a variety of industries regardless of whether you are an individual inventor or a major company.
Casos de éxito de
Lewei Precision x Rennteam Stuttgart: Colaboración para la innovación en ingeniería de coches de carreras
Lewei Precision se enorgullece de apoyar al Rennteam Stuttgart fabricando 2 componentes de la barra principal y más de 80 insertos de aluminio. Nuestra ingeniería de precisión asegura que están listos para conquistar las competiciones de Formula Student, dando al equipo una ventaja ganadora.
Estudio de caso: Asociación de LURA con Lewei Precision para piezas de precisión de motores de cohetes
LURA, la Asociación de Cohetes de la Universidad de Leeds, utilizó las técnicas de mecanizado CNC de 5 ejes y de compuestos de torneado y fresado de Lewei Precision para crear intrincadas piezas de motor esenciales para su victoria en la competición nacional Race to Space Propulsion.
Estudio de caso: Andrea Piccino colabora con Lewei Precision para hacer realidad el "traje de Iron Man".
Andrea, un dedicado ingeniero mecánico italiano, utilizó el mecanizado CNC de 5 ejes de Lewei Precision para fabricar un exoesqueleto pasivo de cuerpo entero que potencia la fuerza humana y minimiza el esfuerzo físico.
Caso práctico: La precisión de Lewei impulsa el éxito de Arco Aria en los coches de cuerda
Gracias a la perspicacia de Lewei, Arco consiguió modificar el motor de su coche de cuerda, incluido el giro del cigüeñal y el diseño de un nuevo sistema de admisión para mejorar la eficiencia.
Por qué elegirnos
When you choose us, you get more than just parts but you will get precision, reliability, and a seamless experience. Here’s what makes us the right choice for your CNC machining needs:
Precisión excepcional
Produce perfect components with very tight tolerances down to 0.001 inches, and the most accurate parts in every project.
We highly value time, and that is why we will ensure that our lead times are fast, in some cases less than 1 day to ensure that your project does not run behind schedule.
Our engineering support will be at your disposal to make you maximize your designs and make part performance better in order to achieve the best results.
Preguntas frecuentes sobre el mecanizado CNC
Which CNC machining services does your company offer?
Our CNC machining services (CNC milling, CNC turning, CNC routing, CNC EDM and 3D printing) are used to serve both, simple and complex parts, in a variety of industries.
What level of precision can you achieve?
We have machining abilities and can achieve high tolerance as fine as -.0001 inches as long as the high-performance parts are required.
What kind of material can be used with your CNC machining?
Here we have a wide variety of materials that we work with such as metals (aluminum, steel and titanium), plastics (ABS, Nylon and PEEK), and composite materials, which gives you a wide choice on whatever you need to machine.
What types of surface finishes can be applied to parts?
To add appearance and functionality to your parts, we offer a wide variety of surface finishes, including bead blasting, powder coating, anodizing, polishing and black oxide.
How fast is the lead time for delivery of a prototype?
Our prototyping is done within 1-5 business days and it is delivered in the shortest time possible, meaning you receive quality parts just in a fraction of the time.
Which file formats are compatible with your services?
We do not have a problem with file format as we are able to accept all file formats such as STL, STEP, IGES, and DXF hence you can easily submit your designs to our machine so that they can be machined with ease using CNC machines.
What is your method of ensuring quality and accuracy of parts?
Our quality control is very high and we use the state-of-the-art inspection tools such as CMMs and digital micrometers to guarantee that all parts are accurate and performing to your requirements.
Are there any design restrictions for CNC machining?
Although it is possible to produce very complex parts, some material and machining limitations can be in place. Our highly qualified team will assist you on the design process to make it feasible and cost effective.
Can I provide my own materials?
Yes, we accept clients, who want to bring their own materials. But please, discuss your material selection with us prior to your material being used, so it can be machined.
What would happen to my data in the process?
Securing your data is your number one priority. Your files are safe and private because we have encrypted channels of communication and abide by tough confidentiality measures.
Which industries are you specialized in?
Our CNC machining services are applicable to several industries, such as aerospace, automotive, medical devices, robotics, consumer electronics, and others, with personalized solutions to each of these industries.
How can I obtain a quote for my project?
In order to get a personalized quote, all one needs to do is to upload his or her CAD files to our online platform. The quote will be generated immediately on your project specifications by our system.
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