Custom Online CNC Milling Services
On-demand CNC milling services for rapid prototypes and production parts. High precision CNC milling up to 0.008 mm. Milled parts ready in as fast as 1 day. Get an instant CNC quote today.
- Tolerance down to 0.001 inches
- Choose from 100+ materials, 20+ surface finishes.
- ISO 9001:2015, ISO 13485, ISO14001:2015, IATF 16949:2016 certified.
- Lead times as short as 1 day.
Bring your product ideas to life quickly and accurately with our expert prototyping services.
CNC Machining Services for Custom Parts
CNC Machining Solutions
Prototyping
Lewei Prototyping
Leverage our robust manufacturing capabilities for swift, high-quality prototype delivery. Using the latest technology, we ensure Lewei, accurate production, expediting your path from testing to market.
Capability: 20-500
Lead Time: 10 business days
Production
Low and High-Volume Production
Lewei Precision is equipped to handle large-scale production orders. This means they can efficiently produce large quantities of CNC precision machining parts without compromising quality or accuracy.
Capacity: 1000+
Lead Time: 15 business days
CNC Milling Materials
At Lewei Precision, our plastic and metal CNC milling solutions offer a diverse range of materials, ensuring precision and durability. This vast selection empowers our clients with optimal choices for their unique projects, boosting their product’s quality and performance.
Metals
Aluminum is lightweight yet strong, with excellent machinability and corrosion resistance. Ideal for aerospace and automotive parts.
Alloys
Aluminum 6061, 6061-T6
Aluminum 2024
Aluminum 5052
Aluminum 5083
Aluminum 6063
Aluminum 6082
Aluminum 7075, 7075-T6
Aluminum ADC12 (A380)
Copper is known for its superior electrical conductivity and thermal properties, making it perfect for electrical components and heat exchangers.
Alloys
Copper C101(T2)
Copper C103(T1)
Copper C103(TU2)
Copper C110(TU0)
Beryllium Copper
Brass is durable and has a low friction coefficient, which makes it suitable for fittings, tools, and musical instruments that require precision.
Alloys
Brass C27400
Brass C28000
Brass C36000
Bronze is highly resistant to corrosion and metal fatigue, favored for bearings, bushings, and marine hardware.
Alloys
Tin Bronze
Steel is an alloy with high tensile strength and durability, commonly used in construction and automotive industries for its robustness.
Alloy
Steel 1018, 1020, 1025, 1045, 1215, 4130, 4140, 4340, 5140, A36
Die steel
Alloy steel
Chisel tool steel
Spring steel
High speed steel
Cold rolled steel
Bearing steel
SPCC
Stainless steel is renowned for its corrosion resistance, making it a prime choice for medical devices and food processing equipment.
Alloys
Stainless Steel SUS201
Stainless Steel SUS303
Stainless Steel SUS 304
Stainless Steel SUS316
Stainless Steel SUS316L
Stainless Steel SUS420
Stainless Steel SUS430
Stainless Steel SUS431
Stainless Steel SUS440C
Stainless Steel SUS630/17-4PH
Stainless Steel AISI 304
Magnesium is the lightest structural metal, offering high strength-to-weight ratios, perfect for automotive and aerospace applications where weight is critical.
Alloys
Magnesium Alloy AZ31B
Magnesium Alloy AZ91D
Titanium boasts the highest strength-to-density ratio among metals, highly resistant to corrosion and fatigue, ideal for aerospace, medical, and marine applications.
Alloys
Titanium Alloy TA1
Titanium Alloy TA2
Titanium Alloy TC4/Ti-6Al 4V
Plastics
ABS is strong, durable, and offers good resistance to heat and impact. It’s preferred for automotive components and consumer goods.
ABS Beige(Natural)
ABS Black
ABS Black Antistatic
ABS Milky White
ABS+PC Black
ABS+PC White
Polycarbonate is extremely durable and has high impact resistance, along with excellent clarity, used for bullet-proof glass and protective gear.
PC Black
PC Transparent
PC White
PC Yellowish White
PC+GF30 Black
PMMA, or acrylic, is known for its crystal clarity and weather resistance, making it ideal for outdoor fixtures and display cases.
PMMA Black
PMMA Transparent
PMMA White
POM is strong, with a low friction surface and good dimensional stability, perfect for precision parts in mechanical applications.
Dark brown (coffee) POM 100AF
POM Black
POM Blue
POM White
Nylon is versatile, strong, and wears well against friction, commonly used for gears, bearings, and other wear-resistant surfaces.
PA(Nylon) Blue
PA6 (Nylon)+GF15 Black
PA6 (Nylon)+GF30 Black
PA66 (Nylon) Beige(Natural)
PA66 (Nylon) Black
Polyethylene is lightweight and has high resistance to impact, widely used in packaging and containers.
PE Black
PE White
PEEK is renowned for its high temperature resistance and strength, often used in aerospace and medical implant manufacturing.
PEEK Beige(Natural)
PEEK Black
Polypropylene is tough, has excellent chemical resistance, and is used for automotive parts, containers, and in packaging.
PP Black
PP White
PP+GF30 Black
CNC Milling Surface Finishes
Gain access to quality surface finishing for custom CNC milled parts to remove aesthetic flaws and improve the appearance of your products. We also provide rigid protection and additional resistance and strength to your parts through superior surface finishes.
As machined finish leaves the surface straight from the CNC machine, providing a cost-effective option with tool marks.
Anodizing increases corrosion resistance and wear properties, while allowing for color dyeing, ideal for aluminum parts.
Polishing achieves a high gloss finish, reducing surface roughness and enhancing the aesthetic appeal of metals.
Sand blasting uses pressurized sand or other media to clean and texture the surface, creating a uniform, matte finish.
Tumbling smooths and polishes small parts by friction and abrasion in a barrel, offering a consistent but slightly textured finish.
Electropolish is a chemical process that smooths and brightens surfaces while improving corrosion resistance.
Alodine coating provides corrosion protection and improves paint adhesion, mainly used on aluminum surfaces.
Heat treatment alters the mechanical properties of metal to increase its hardness, strength, or ductility..
A brushed finish creates a unidirectional satin texture, reducing the visibility of marks and scratches on the surface.
Powder coating applies a thick, wear-resistant layer with excellent color and texture options, suitable for a variety of surfaces.
Electroplating bonds a thin metal layer onto parts, improving wear resistance, corrosion resistance, and surface conductivity.
Black oxidize is a conversion coating for ferrous metals that improves corrosion resistance and minimizes light reflection.
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Start Your
CNC Machining Project
Start your project with our easy-to-use platform for CNC parts online quoting. Upload a CAD file to receive instant quotes, lead times, and DFM details for your CNC components. Specializing in CNC machining for metals and plastics, we offer adaptive production and shipping solutions to align with your product development needs.
CHOOSE US
With Lewei Precision, CNC milling service online, you’re investing in more than just machinery. You get the promise of impeccable precision, adherence to tight schedules, and the support of seasoned professionals for all your custom CNC milling needs.
High Quality Parts
Our ISO-certified CNC machining ensures precision and quality. Every part is made to fit perfectly and perform flawlessly with advanced quality control at every step.
Fast Lead Time
Accelerate your manufacturing cycle. RapidDirect domestic workshops and state-of-the-art machinery guarantee fast turnaround times, helping businesses maintain momentum.
Engineering Support
No matter you whenever and whereever, navigate your CNC milling projects with confidence. Our seasoned specialists offer insightful guidance at every step, maximizing design optimization.
How CNC Milling Works?
CNC milling is a precise manufacturing process that involves removing material from a workpiece using rotating cutting tools. The process begins with a digital design, typically created in CAD software. This design is then converted into a CNC program, which dictates the movements of the milling machine.
The workpiece is securely fastened to the machine’s table, and the cutting tool, mounted on a spindle, rotates at high speeds. The machine follows the programmed path, making precise cuts to shape the material into the desired form. CNC milling can create complex shapes and features, such as slots, holes, and contours, with high accuracy.
Three-axis milling moves the tool along the X, Y, and Z axes. Four-axis milling adds rotation around one axis, while five-axis milling allows rotation around two axes, enabling more intricate designs. This versatility makes CNC milling essential in various industries, from aerospace to medical devices.
Advantages
Advantages of Precision Machining
Precision machining offers significant benefits by producing parts with exceptional accuracy.
- High Accuracy: Precision machining tools can produce parts with extremely tight tolerances, ensuring that each piece meets exact specifications. This is crucial for applications requiring intricate details, such as in aerospace and medical devices.
- Consistency: This method offers unmatched consistency in production. Even over large volumes, each part remains identical, reducing the risk of errors and defects in the final product.
- Material Versatility: Precision machining can handle a wide range of materials, from metals to plastics and composites. This flexibility allows manufacturers to choose the ideal material for specific properties like strength, weight, or resistance.
- Complex Geometries: With advanced CNC machines, manufacturers can create complex shapes that would be difficult or impossible to achieve through manual processes. This capability is vital for developing innovative products and components.
- Reduced Waste: Since precision machining is so accurate, it minimizes material wastage. This efficiency not only saves on raw materials but also reduces the overall environmental impact of manufacturing.
- Speed: Modern precision machining techniques are highly automated, leading to faster production times compared to traditional methods. This speed enables quicker turnaround times for projects, keeping pace with market demands.
Applications
Applications of Precision Machining
Various industries rely on precision CNC machining services to create specialized parts, including:
- Engine Components: Essential for engines in both the automotive and aerospace industries, such as pistons and crankshafts, which require exact dimensions for optimal performance.
- Electronics Parts: Critical in producing components like connectors and pins in electronic devices, where precise measurements are necessary for functionality and compact assembly.
- Medical Implants: Used to manufacture surgical implants, including hip and knee replacements, where precise tolerances and smooth finishes are crucial for compatibility with human tissue.
- Aerospace Fasteners: Involves creating high-strength bolts and screws that must endure extreme environmental conditions in aerospace applications.
- Tool and Die Making: Focuses on crafting molds and dies that are fundamental in other manufacturing processes, ensuring the production of consistent and quality parts in mass production settings.
What kinds of CNC milling machines does Lewei Precision,have?
At Lewei Precision,, we have a variety of CNC milling machines to meet diverse manufacturing needs. Our inventory includes 3-axis, 4-axis, and 5-axis CNC milling machines.
The 3-axis machines are perfect for simple operations, handling basic cutting tasks along the X, Y, and Z axes.
Our 4-axis machines add an extra rotational axis, allowing for more complex geometries and more efficient production of parts with features that require continuous machining around a fourth axis.
Finally, our advanced 5-axis CNC milling machines offer the highest level of precision and versatility, enabling the creation of intricate parts with complex shapes and angles.
These machines are capable of machining in five different axes simultaneously, reducing the need for multiple setups and ensuring exceptional accuracy and quality in every component we produce.
What are your CNC milling capabilities?
RapidDirect offers comprehensive CNC milling capabilities tailored to various industry needs. We can machine parts with maximum dimensions of 4000 x 1500 x 600 mm and minimum dimensions of 5 x 5 x 5 mm, accommodating a wide range of project sizes. Our milling machines can work with various materials, including metals, plastics, and composites. We achieve tight tolerances, typically ±0.01 mm for 5-axis milling, ensuring precision and consistency. Our lead times are competitive, ranging from 3-7 days for simpler 3-axis tasks to 7-14 days for more complex 5-axis projects. We also provide additional services such as surface finishing, heat treatment, and quality inspection to ensure that every part meets the highest standards of quality and performance.
What’s the difference between CNC milling and CNC turning?
CNC milling and CNC turning are both subtractive manufacturing processes, but they differ in how the material is removed.
In CNC milling, the workpiece is stationary, and the cutting tool moves across multiple axes to remove material and create the desired shape. This process is ideal for complex parts with various features such as slots, holes, and contours.
On the other hand, CNC turning involves rotating the workpiece while a stationary cutting tool removes material. This method is best suited for producing cylindrical parts, such as shafts, rings, and bolts. While milling can handle more complex geometries, turning is typically faster and more efficient for producing round parts.
What’s the difference between CNC milling and CNC router?
CNC milling and CNC routing both involve cutting materials using computer-controlled machines, but they serve different purposes.
CNC milling machines are designed for precision work with metals, requiring high rigidity and the ability to handle significant cutting forces. They are used for producing intricate and complex parts with tight tolerances.
CNC routers, however, are typically used for softer materials like wood, plastics, and composites. They operate at higher speeds and are ideal for cutting larger sheets into parts with less emphasis on precision. Routers often feature a gantry-style design, allowing for quick and efficient handling of large workpieces, while milling machines focus on detailed, accurate machining.
How large are the fillets typically added when a 3D model or drawing does not specify a particular fillet size?
When a 3D model or drawing does not specify a particular fillet size, standard practice is to add fillets with a radius that balances strength and machinability.
Typically, fillets with a radius of 1/3 to 1/5 of the cavity depth are added. For general purposes, a fillet radius of around 1 mm to 3 mm is commonly used. This size helps to reduce stress concentrations and improve the overall durability of the part.
However, the exact size can vary based on the material being used and the specific requirements of the part. Larger fillets are often preferred for softer materials, while smaller fillets may be used for harder materials to ensure structural integrity without compromising precision.
What are the Differences Between Vertical and Horizontal CNC Milling?
Vertical CNC milling machines, with their vertically oriented spindles, are ideal for precision work on smaller components, offering excellent visibility and versatility for tasks like drilling and boring. Horizontal CNC milling machines, featuring horizontally oriented spindles, excel in handling larger, heavier workpieces and provide enhanced stability and efficient chip removal. For projects requiring extensive material removal and high durability, horizontal milling is preferred. In contrast, vertical milling is best for intricate, detailed work. Choosing between these types depends on your specific CNC milling services needs, whether for precision or bulk machining.
What is tool offset in CNC milling?
In CNC milling, tool offset refers to the adjustment made to account for the tool’s dimensions—specifically its length and diameter—during the machining process. These offsets ensure that the cutting tool operates with precision relative to the workpiece. By accurately setting tool offsets, a machinist can determine the correct starting point for machining, ensuring that the part is cut to the exact specifications required. Proper tool offsets are crucial for achieving accurate and consistent results in CNC milling operations.
What is 5-axis CNC machining?
5-axis CNC machining refers to a process where a CNC milling machine can move a cutting tool along five different axes, allowing for highly complex and precise machining. In this setup, the X, Y, and Z axes correspond to the basic linear movements found in a 3-axis machine. Additionally, the table can rotate around the A-axis, similar to a 4-axis machine. The key difference with a 5-axis machine is its ability to pivot the table or tool head around a fifth axis, the C-axis, enabling the tool to approach the workpiece from virtually any direction. This capability makes 5-axis CNC machines ideal for creating intricate parts with complex geometries, as it allows for machining multiple surfaces in a single setup.
What types of materials do CNC mills use?
CNC mills can work with a diverse range of materials. Metals frequently used include aluminum, brass, and steel, each offering different properties for various applications. Additionally, CNC milling is effective on various plastics such as ABS, acrylic, polycarbonate, and polypropylene, which are valued for their versatility and ease of machining. This variety of materials allows CNC mills to be employed in numerous industries, from aerospace to consumer products, making them a highly adaptable tool for manufacturing.
CNC Milling
