Anodizing Aluminium Machining CNC Parts Metal Parts CNC Service Fabrication
CNC Mechanical Parts
CNC machining, standing for computer numerical control machining, is a prevalent manufacturing
process that employs automated, high-speed cutting tools to shape designs from metal or plastic
stock.
Standard CNC machines encompass 3-axis, 4-axis, and 5-axis milling machines, lathes, and routers.
Variations exist in how CNC parts are cut, with possibilities such as the workpiece remaining
stationary while the tool moves, the tool staying in place while the workpiece is rotated and moved,
or both the cutting tool and workpiece moving together.
Product Details
CNC machining materials are generally grouped into three primary categories: plastics, soft metals,
and hard metals. This classification includes materials such as aluminum, bronze, copper, ceramics,
plywood, steel, stone, wood, zinc, and various others.
Preference is often given to materials that are considered easy to work with and possess
advantageous properties compared to alternative options.
Common Materials for CNC Machining | |
Material | Properties |
Aluminum | 2024: Good fatigue resistance and strength; excellent toughness at moderate to high strength levels; improved fracture toughness |
6061: Excellent machinability, low cost, and versatility | |
7075: High strength, hardness, low weight, and heat tolerance | |
Stainless Steel | Excellent machinability and outstanding uniformity; good workability and weldability, high ductility and formability |
Steel Alloy | Mix of chromium, molybdenum, and manganese yields toughness, good torsional and fatigue strength |
Brass | Versatile and highly attractive copper/zinc alloy with warm yellow color accommodates severe forming/drawing |
Titanium | Excellent strength to weight ratio, used in aerospace, automotive, and medical industries |
Copper | High ductility and high electrical and thermal conductivity; develops attractive blue-green surface patina over time |
ABS | Excellent impact resistance, good mechanical properties, susceptible to solvents |
Nylon | Excellent mechanical properties, high toughness, poor moisture resistance |
POM | High stiffness, excellent thermal & electrical properties, relatively brittle |
CNC Machining Tolerances
Tolerances are not standardized across all processes and materials.
The final tolerances on your part depend on various factors, such as part size, design complexity,
the number and size of features, materials used, surface finish, and the manufacturing process
employed.
Once your order is confirmed, we conduct a Design for Manufacturing review to identify areas that
may need modification for better manufacturability.
It's helpful if you can specify which areas in your design have critical tolerances that must be met
and which can be adjusted, if necessary, to optimize production time and cost.
CNC Milling Tolerances | ||
Limits for nominal size | Plastics | Metals |
0.5mm* to 3mm | ±0.1mm | ±0.05mm |
Over 3mm to 6mm | ±0.1mm | ±0.05mm |
Over 6mm to 30mm | ±0.2mm | ±0.10mm |
Over 30mm to 120mm | ±0.3mm | ±0.15mm |
Over 120mm to 400mm | ±0.5mm | ±0.20mm |
Over 400mm to 1000mm | ±0.8mm | ±0.30mm |
Over 1000mm to 2000mm | ±1.2mm | ±0.50mm |
Over 2000mm to 4000mm | ±2.0mm | |
*Please clearly indicate tolerances for nominal sizes, below 0.5mm on your technical drawing. |
Specialist industries
1. Aerospace Components: Precision-engineered landing gear components and fuselage structures
for aircraft, ensuring safety and reliability.
2. Automotive Components: Production of control panels, axles, and molds for the automotive
industry, contributing to the efficiency and innovation of vehicles.
3. Consumer Electronics: Crafting components such as enclosures for consumer electronic devices,
maintaining a balance between functionality and aesthetics.
4. Medical Components: Precision machining of surgical instruments and orthotics, meeting the
stringent requirements of the medical industry for quality and accuracy.
5. Oil and Gas Machine Parts: Manufacturing critical parts like valves, rods, and pins for the oil
and gas sector, ensuring durability and performance in challenging environments.
6. Prototyping and Modeling: Rapid prototyping and modeling for product development, allowing
for the efficient testing and refinement of designs.
7. Sculptures: Artistic creations and sculptures, showcasing the versatility of CNC milling in
transforming digital designs into tangible forms.
8. Furniture: Crafting precise components for furniture, ensuring quality and consistency in the
production of intricate designs.
9. Woodworking: Precision woodworking, enabling the creation of detailed and finely finished
wooden components.
The adaptability of CNC milling machines spans a broad spectrum of industries, making them
indispensable in the manufacturing of parts that demand both intricacy and accuracy.
Company Profile
FAQ's
1. What are the advantages of CNC machining?
The advantages of CNC machining are prominent, with rapid prototyping and efficient full-scale
production at the forefront. A distinguishing feature is its capacity for high precision and accuracy
in manufacturing, extending to tight tolerance machining for CNC parts spanning various sizes.
Beyond this, CNC machining offers unmatched flexibility in addressing volume needs, pricing
considerations, lead times, and the utilization of a broad spectrum of materials and finishes.
2. What size of fillets are added when no specific fillet is specified by the 3D model
or drawing?
In cases where no specific fillet radius is specified in the 3D model or drawing, fillet radii will be
added by the machinist based on their judgment to enhance machining ease.
To ensure a desired fillet radius, specific details should be provided. For a general understanding,
internal vertical edge radii might surpass 1/3 of the depth, and internal horizontal edges may
either be maintained sharp or incorporate a radius within the range of 0.5mm to 1mm.
3. What type of surface finishes does provide?
We provide an extensive selection of finishing services to achieve the desired look and feel for your
parts. Our offerings include treatments for metal, texturing for plastic injection mold tools, painting
for both metal and plastic, and various other options. Explore our blog to learn how to specify the
surface texture you want.
4. How quickly can I get my parts?
For quality parts, a turnaround time of as little as two weeks is possible when complete 2D and 3D
CAD models are provided. Parts with more complexity or special features may take longer.
To obtain precise lead times for your project, request a quote.
In terms of shipping, the majority of our shipments use air freight, ensuring delivery within a few
days from China to Europe or North America.