CNC Milling Services
Get Your Custom CNC Turned Parts Delivered in Just 2 Days – Precision, Speed, and Quality Guaranteed!
- Tolerances down to ±0.002mm
- 60+ metal and plastic material options
- ISO 9001:2015
Experience Precision CNC Milling Services from China
Richconn offers high-precision CNC milling services, producing custom parts with complex geometries from a variety of materials. We ensure exceptional accuracy and fast turnaround times, catering to prototypes, small batches, and large production runs.
3-Axis CNC Milling Services
- Ideal for simple, flat parts and basic geometries.
- Efficient for straightforward tasks with high precision.
4-Axis CNC Milling Services
- Allows for additional rotation around the X-axis.
- Suitable for more complex parts requiring precise positioning.
- Enables simultaneous movement across five different axes. Perfect for highly intricate and complex parts with detailed features.
- Capable of producing parts with undercuts, deep cavities, and intricate shapes.
CNC Milling Tolerances
We follow ISO 2768 standards for CNC machining.
Limits for nominal size | Plastics (ISO 2768- m) | Metals (ISO 2768- f) |
|---|---|---|
0.5mm~3mm | ±0.1mm | ±0.05mm |
> 3mm~6mm | ±0.1mm | ±0.05mm |
> 6mm~30mm | ±0.2mm | ±0.1mm |
> 30mm~120mm | ±0.3mm | ±0.15mm |
> 120mm~400mm | ±0.5mm | ±0.2mm |
> 400mm~1000mm | ±0.8mm | ±0.3mm |
> 1000mm~3000mm | ±1.2mm | ±0.5mm |
> 2000mm~4000mm | ±2mm | – |
Our CNC Milling Capabilities
Our state-of-the-art CNC milling services encompass advanced 3-axis, 4-axis, and 5-axis machining capabilities, ensuring we can handle a wide variety of materials and complex geometries with utmost accuracy.
3-axis CNC milling
Parameter | Metals | Plastics |
|---|---|---|
Max. Part Size (L x W x H) | 2300*1000*650 mm | 2300*1000*650 mm |
90.5*39.5*25.6 in | 90.5*39.5*25.6 in | |
Min. Feature Size | Ø 0.50 mm | Ø 0.50 mm |
Ø 0.019 in | Ø 0.019 in | |
Typical Tolerances | ±0.01 mm | ±0.01 mm |
±0.0004 in | ±0.0004 in | |
Surface Finish | Ra 0.8 µm | Ra 1.2 µm |
Ra 32 µin | Ra 47.5 µin | |
Max. Cutting Feed Rate | 20,000 mm/min | 20,000 mm/min |
785 in/min | 785 in/min | |
Spindle Speed | Up to 20000 RPM | Up to 20000 RPM |
Tool Change Time | 3.3 S | 2.2 S |
4-axis CNC milling
Parameter | Metals | Plastics |
|---|---|---|
Max. Part Size (L x W x H) | 2100*1800*500 mm | 2100*1800*500 mm |
82.6*70.8*19.7 in | 82.6*70.8*19.7 in | |
Min. Feature Size | Ø 0.2 mm | Ø 0.2 mm |
Ø 0.008 in | Ø 0.008 in | |
Typical Tolerances | ±0.01 mm | ±0.03 mm |
±0.0004 in | ±0.0012 in | |
Surface Finish | Ra 0.8 µm | Ra 1.2 µm |
Ra 32 µin | Ra 47.5 µin | |
Max. Cutting Feed Rate | 30,000 mm/min | 54,000 mm/min |
1180 in/min | 2126 in/min | |
Spindle Speed | Up to 20000 RPM | Up to 20000 RPM |
Tool Change Time | 3.3 S | 2.2 S |
5-axis CNC milling
Parameter | Metals | Plastics |
|---|---|---|
Max. Part Size (L x W x H) | 1385*1200*900 mm | 1385*1200*900 mm |
54.53*47.24*35.43 in | 54.53*47.24*35.43 in | |
Min. Feature Size | Ø 0.1 mm | Ø 0.1 mm |
Ø 0.04 in | Ø 0.04 in | |
Typical Tolerances | ±0.01 mm | ±0.03 mm |
±0.0004 in | ±0.0012 in | |
Surface Finish | Ra 0.8 µm | Ra 1.2 µm |
Ra 32 µin | Ra 47.5 µin | |
Max. Cutting Feed Rate | 50,000 mm/min | 50,000 mm/min |
1968 in/min | 1968 in/min | |
Spindle Speed | Up to 20000 RPM | Up to 20000 RPM |
Tool Change Time | 0.9 S | 0.9 S |
Material Selection for CNC Milling
We offer a wide range of materials for custom CNC milled parts, some of which are described below:
Metal materials
Aluminum
Steel
Stainless Steel
Brass
Copper
Titanium
Magnesium
Inconel
Tool Steel
Nickel Alloys
- Properties: Lightweight, high strength-to-weight ratio, excellent corrosion resistance, good thermal and electrical conductivity.
- Applications: Aerospace components, automotive parts, medical devices, consumer electronics, and prototypes.
- Grades: 6061, 7075, 2024, 5083.
Plastic materials
ABS
PC
PMMA
PA(Nylon)
POM(Delrin)
PTFE
PVC
PE
PP
PEEK
PU
Teflon (PTFE)
- Properties: Good impact resistance, toughness, and machinability; excellent dimensional stability and easy to bond with adhesives.
- Applications: Prototypes, automotive components, consumer electronics housings, and enclosures.
CNC Milling Parts Gallery
Browse through our gallery to see the exceptional quality and variety of our CNC milled parts, crafted to perfection for each industry.
CNC Milling Parts Surface Finishes
As-Machined
Parts are left with the original finish from the CNC turning process, showcasing visible tool marks. Suitable for functional prototypes and parts where surface appearance is not critical.
Bead Blasting
Provides a uniform matte or satin surface finish by blasting the part with fine glass beads. Ideal for aesthetic purposes and removing minor surface imperfections.
Anodizing
Electrochemical process that creates a protective oxide layer on aluminum parts, available in various colors. Enhances corrosion resistance, improves surface hardness, and allows for a decorative finish.
Powder Coating
Dry powder is electrostatically applied and then cured under heat, forming a durable and protective layer. Provides a strong, wear-resistant finish suitable for parts exposed to harsh environments.
Electropolishing
Electrochemical process that removes a thin layer of material, resulting in a smooth and shiny surface. Used for parts requiring high surface smoothness and enhanced corrosion resistance.
Plating (Nickel, Chrome, Zinc, etc.)
Metal layer is deposited onto the part's surface, offering additional protection and improved appearance. Increases wear resistance, reduces friction, and enhances corrosion resistance.
Brushing
Creates a uniform, linear texture on the part's surface by brushing it with abrasive pads. Used for aesthetic purposes, providing a satin finish with visible grain.
Passivation
Chemical treatment that removes contaminants and enhances the corrosion resistance of stainless steel parts. Ensures parts remain free from rust and contamination, ideal for medical and food processing industries.
Polishing
Mechanical process that smooths and shines the part's surface using abrasive compounds. Achieves a mirror-like finish, suitable for decorative purposes and components requiring high reflectivity.
Black Oxide
Conversion coating for ferrous materials, resulting in a matte black finish. Enhances corrosion resistance and reduces light reflection, commonly used in military and automotive parts.
Our CNC Milling Machines
At the heart of our manufacturing capabilities are our state-of-the-art CNC milling machines. Each machine is meticulously maintained and operated by our skilled technicians, ensuring every project meets the highest standards of excellence.
Why Choose Our CNC Milling Services?
Precision, Efficiency, and Innovation for Your Manufacturing Needs
Precision and Accuracy
We deliver tolerances as tight as ±0.001 inches, ensuring your parts fit perfectly every time.
Consistency
Whether you need 10 parts or 10,000, our CNC machines produce identical, high-quality parts consistently.
Speed and Efficiency
Our advanced technology speeds up production, helping you meet tight deadlines without sacrificing quality.
Complex Geometries
We handle intricate designs easily, bringing your challenging ideas to life without compromise.
Material Versatility
We work with a wide range of materials, including metals, plastics, and composites, meeting diverse project needs.
Support and Expertise
Our experienced team is here to guide you from design to delivery, ensuring your project’s success.
Frequently Asked Questions about CNC Milling Services
CNC milling involves removing material from a stationary workpiece using rotating cutting tools, while CNC turning rotates the workpiece against stationary cutting tools. Milling is typically used for more complex, non-cylindrical shapes, while turning is used for cylindrical parts.
We cater to both small and large orders, with no strict minimum order quantity. Whether you need a single prototype or a large production run, we can accommodate your needs.
Absolutely. Our experienced engineers can review your design and provide recommendations to optimize it for CNC milling, improving manufacturability, reducing costs, and ensuring the best possible outcome.
We take intellectual property and confidentiality very seriously. We have strict protocols in place to protect your designs and data, including non-disclosure agreements (NDAs) and secure data handling practices.
Payment terms vary based on the project scope and customer relationship. We typically require a deposit before starting production, with the balance due upon completion. We accept various payment methods and can discuss flexible terms for larger or ongoing projects.
Yes, we can produce samples or prototypes for evaluation before moving to full production. This allows you to assess the quality and fit of the parts and make any necessary adjustments.
You can submit your design files in various formats, including CAD files (e.g., .dwg, .dxf, .step, .iges). If you need assistance with file preparation, our engineering team is available to help ensure your design is optimized for CNC milling.
Ready to Get Started on Your CNC Milling Quote?
Contact us now to discuss your custom CNC milling needs and receive a competitive quote tailored to your specifications. Experience precision, quality, and fast turnaround with Richconn.
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A Comprehensive Guide to CNC Milling
Whether you’re new to the CNC industry or seeking a reliable CNC milling service, this guide offers a quick and comprehensive understanding of the entire CNC milling process. Use it to navigate the CNC machining industry with ease, avoiding common pitfalls and making informed decisions every step of the way. Discover essential knowledge, practical insights, and expert tips to help you achieve success with minimal detours.
What is CNC Milling?
CNC milling is a sophisticated subtractive manufacturing process that employs computer numerical control (CNC) technology to precisely remove material from a workpiece using rotating multipoint cutting tools. This method is highly versatile, capable of producing complex shapes and intricate features with exceptional accuracy.
What are the Benefits of CNC Milling?
These benefits make CNC milling an essential and highly efficient manufacturing process, suitable for a wide range of industries and applications.
High Precision and Accuracy
CNC milling machines offer exceptional precision, allowing for the creation of intricate and detailed parts with tight tolerances.
Consistency and Repeatability
CNC milling ensures consistent production quality, as the computer-controlled process eliminates variations.
Complex Geometries
Capable of creating complex shapes and features that would be difficult or impossible to achieve with manual machining.
Efficiency and Speed
CNC milling processes are highly efficient, with the ability to operate continuously and at high speeds.
Reduced Waste
High precision and optimized cutting paths minimize material waste, making CNC milling more sustainable.
Ease of Prototyping
Quick and accurate production of prototypes allows for rapid testing and iteration of designs.
The Process of CNC Milling
This step-by-step process ensures that CNC milling produces high-quality, precise parts that meet exact specifications and requirements.
1. Design and Programming
- CAD Design: The process begins with creating a digital 3D model of the part using Computer-Aided Design (CAD) software.
- CAM Programming: The CAD model is then imported into Computer-Aided Manufacturing (CAM) software, which generates the toolpaths and G-code. The G-code is a set of instructions that tells the CNC machine how to move and what actions to perform.
2. Setup
- Material Selection: The appropriate material for the part is selected and prepared.
- Machine Preparation: The CNC milling machine is set up, including the installation of the necessary tools (cutting tools, end mills, drill bits) and fixtures to hold the workpiece.
- Workpiece Loading: The raw material or workpiece is securely clamped onto the machine bed or fixture to prevent movement during machining.
3. Milling Operations
- Toolpath Execution: The CNC machine reads the G-code and begins executing the programmed toolpaths. The cutting tool rotates and moves along multiple axes to remove material from the workpiece.
- Roughing: Initial cuts are made to remove the bulk of the material quickly, bringing the workpiece close to its final shape.
- Finishing: Precision cuts are made to achieve the final dimensions and surface finish, following the exact specifications of the CAD model.
4. Monitoring and Adjustment
- Real-Time Monitoring: The machining process is continuously monitored to ensure accuracy. Operators may make adjustments to tool speeds, feeds, and depths as needed to optimize performance and quality.
- Tool Changes: Automatic tool changers (ATCs) may be used to switch between different cutting tools during the process, depending on the complexity of the part.
5. Post-Processing
- Deburring and Cleaning: After machining, the part may undergo deburring to remove any sharp edges or burrs. Cleaning is done to remove any remaining coolant or chips.
- Inspection and Quality Control: The finished part is inspected to ensure it meets the specified dimensions and tolerances. This may involve visual inspection, dimensional measurements, and more advanced techniques such as coordinate measuring machine (CMM) inspection.
6. Finishing (Optional)
- Surface Finishes: Depending on the application, additional surface finishing processes such as anodizing, plating, painting, or polishing may be applied to enhance the part’s appearance and performance.
7. Delivery
- Packaging: The finished and inspected parts are carefully packaged to prevent damage during transportation.
- Shipping: The parts are shipped to the customer, ready for use in their intended application.
What Types of Operations are Available for CNC Milling?
CNC milling is a versatile manufacturing process that involves removing material from a workpiece using rotating cutting tools. The types of operations available for CNC milling include:
Face Milling
This operation involves cutting a flat surface perpendicular to the axis of the cutter. It's used to create a smooth, flat face on the top of the workpiece.
Plain Milling (Slab Milling)
This operation cuts a flat surface parallel to the axis of the cutter, used for machining horizontal surfaces.
End Milling
This involves using an end mill to cut slots, pockets, or contours into the workpiece. It can be used for both peripheral and face milling.
Profile Milling
This is used to cut the outline of a part. The cutter follows a contour on the surface of the workpiece.
Slot Milling
This operation is used to create a slot or channel in the workpiece. It involves cutting along the length of the slot.
Drilling
Although primarily a different process, drilling can be performed on CNC milling machines using specific drill bits to create holes in the workpiece.
Boring
This is the process of enlarging a hole that has already been drilled or cast, using a single-point cutting tool or a boring head.
Tapping
This operation involves cutting internal threads in a hole, typically using a tap.
Contour Milling
Similar to profile milling, but involves more complex, curved surfaces, often in multiple planes.Similar to profile milling, but involves more complex, curved surfaces, often in multiple planes.
Chamfer Milling
This is used to create beveled edges on the workpiece, typically for deburring or aesthetics.
Pocket Milling
This involves cutting out a cavity or pocket in the workpiece, often used in the creation of molds or dies.
Ramping
This operation involves cutting at an angle to create a ramp or inclined plane on the workpiece.
Thread Milling
Unlike tapping, thread milling uses a multi-point tool to cut internal or external threads, allowing for better control over the thread fit and finish.
Helical Milling
This is used for machining helical shapes, such as helical gears or screw threads, by moving the tool along a helical path.
3D Milling
This involves cutting complex three-dimensional surfaces, often used in the aerospace, automotive, and mold-making industries.
Getting to Know CNC Milling Equipment
The foundation that supports the machine and ensures stability and rigidity.
The part that holds the cutting tool and rotates at various speeds to perform the cutting operations.
The end mill or other cutting instruments used to remove material from the workpiece.
The platform where the workpiece is secured. It moves in the X, Y, and sometimes Z axes to position the workpiece relative to the cutting tool.
The interface through which the operator programs the machine and monitors its operation. It includes the display, keyboard, and various controls.
An automatic system that holds multiple tools and changes them as needed during the machining process.
A system that delivers coolant to the cutting area to reduce heat, prolong tool life, and improve surface finish.
The CNC milling machine typically has three to five axes (X, Y, Z, and sometimes A and B) that allow for precise movement of the spindle and worktable.
Motors (typically stepper or servo motors) and drive systems (such as ball screws or linear guides) that move the spindle and worktable along the axes.
The computer numerical control unit that interprets the programmed instructions (G-code) and directs the machine’s movements and operations.
Tools such as vises, clamps, and jigs used to secure the workpiece on the worktable.
Devices that monitor various parameters (like position, speed, and load) and provide feedback to the CNC controller to ensure precision and accuracy.
Industries Where CNC Milling is Applicable
CNC milling is widely used in various industries due to its precision, versatility, and efficiency. Here are some of the key industries where CNC milling is commonly applied for manufacturing parts:
For producing complex and high-precision components like turbine blades, engine parts, and structural components.
For manufacturing engine components, transmission parts, and various custom parts with tight tolerances.
For creating medical devices, implants, surgical instruments, and prosthetics with high precision and specific material requirements.
Electronics
For fabricating components such as housings, heat sinks, and intricate parts for electronic devices and circuit boards.
Defense and Military
For producing critical components used in defense equipment, weapons, and military vehicles.
Energy
For manufacturing parts used in the oil and gas industry, renewable energy systems, and power generation equipment.
For manufacturing precision components used in robotic systems, automation equipment, and machinery.
Marine
For manufacturing components used in boats, ships, and marine equipment.
Cost Analysis of CNC Milled Parts
Understanding the cost factors involved in CNC milling is crucial for making informed decisions about manufacturing processes and budgeting.
- Material Cost
- Fixture Cost (based on the shape and size of the product)
- Debugging Cost (programming and parameter adjustment)
- Special Tool Cost (customization of forming tools and non-standard tools)
- Processing Cost
- Labor Cost (part of machine debugging and manual intervention during production)
- Inspection Cost (inspection during processing and final product inspection fees)
- Post-Processing Cost (subsequent processing procedures: tapping, laser marking, etc., surface treatment, heat treatment)
- Packaging and Transportation Cost
Things to Consider When Looking for CNC Milling Services
When looking for CNC milling services, customers can encounter several pitfalls that can lead to subpar results, increased costs, and delayed project timelines. Here are some of the common pitfalls and how they can be avoided:
Pitfall: Opting for the cheapest provider can result in poor quality, lack of precision, and potential hidden costs.
Avoidance: Evaluate providers based on their reputation, quality of work, equipment, and customer reviews. Request samples or case studies to verify their capabilities.
Pitfall: Miscommunication can lead to errors in the final product, including incorrect dimensions, tolerances, or materials.
Avoidance: Ensure clear and constant communication throughout the project. Provide detailed drawings, specifications, and requirements. Use a service provider with a robust customer management system that allows real-time tracking and feedback.
Pitfall: Some CNC milling service providers specialize in specific types of materials or industries. Choosing a provider without the relevant experience can lead to poor results.
Avoidance: Select a provider experienced in working with the specific materials and parts you need. Verify their expertise in your industry through previous work examples.
Pitfall: Providers without stringent quality control processes can deliver inconsistent and flawed parts.
Avoidance: Check the provider’s quality assurance protocols. Look for certifications such as ISO 9001 and inquire about their inspection and testing procedures.
Pitfall: Without proper technical support, customers may face difficulties in resolving issues, leading to delays and increased costs.
Avoidance: Choose a provider that offers comprehensive technical support, from design to production, and can assist in troubleshooting and problem-solving.
Pitfall: Providers with long lead times or limited capacity may not meet your project deadlines, causing delays.
Avoidance: Discuss lead times upfront and ensure the provider has the capacity to handle your project within your timeline. It’s beneficial to work with a provider that offers fast turnaround times.
Pitfall: Outdated or poorly maintained equipment can result in lower precision and quality.
Avoidance: Verify that the provider uses modern, well-maintained CNC milling machines. Ask about the types of machines and software they use to ensure they can meet your precision requirements.
Pitfall: Without post-processing services, you may need to coordinate with additional vendors, increasing complexity and cost.
Avoidance: Look for providers that offer comprehensive services, including finishing, assembly, and inspection, to streamline the production process.
Pitfall: Long-distance shipping can lead to increased costs and potential damage during transit.
Avoidance: Consider the provider’s location relative to yours and factor in shipping logistics. Sometimes, a local provider can be more cost-effective and reliable.
Pitfall: Unfavorable contract terms can lead to unexpected costs and legal issues.
Avoidance: Carefully review all contract terms, including payment schedules, warranties, and liability clauses. Ensure you fully understand the terms before signing.
By being aware of these pitfalls and taking proactive steps to avoid them, customers can ensure they choose a CNC milling service provider that meets their quality, timeline, and budgetary requirements effectively.
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