Dongguan Yexin Intelligent Technology Co., Ltd.
Precision in Every Part, Excellence in Every Detail
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In the realm of manufacturing, CNC Machining, or Computer Numerical Control Machining, is a
broad category encompassing various machines. These machines leverage computer-controlled
tools to subtract material from a workpiece, leading to a substantial enhancement in speed,
precision, and accuracy when compared to conventional machining techniques.
Product Details
Materials for CNC machining are typically classified into three major categories:
plastics, soft metals, and hard metals. Examples encompass aluminum, bronze, copper,
ceramics, plywood, steel, stone, wood, zinc, and various others.
Materials characterized by ease of manipulation and favorable properties are commonly preferred
over 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 | |
| Brass | Versatile and highly attractive copper/zinc alloy with warm yellow color accommodates severe forming/drawing |
| Copper | High ductility and high electrical and thermal conductivity; develops attractive blue-green surface patina over time |
| 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 |
| Steel Mild Low Carbon | High machinability and weldability, high stiffness; good mechanical properties, machinability, and weldability at low cost |
| Titanium | Excellent strength to weight ratio, used in aerospace, automotive, and medical industries |
| 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 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. | ||
CNC Machining Applications
CNC milling machines have revolutionized manufacturing with their ability to produce complex
designs with exceptional precision. This accuracy positions CNC milling as one of the most
advanced manufacturing techniques. Here's a comprehensive look at the diverse array of parts
achievable with CNC milling machines:
1. Aerospace Components: Crafting precise landing gear components and fuselage structures for
aircraft, adhering to the exacting standards of the aerospace industry.
2. Automotive Components: Production of control panels, axles, and car molds, contributing to
the innovation and efficiency of the automotive sector.
3. Consumer Electronics: Manufacturing components such as enclosures for consumer electronic
devices, ensuring a seamless blend of functionality and design.
4. Medical Components: Precision machining of surgical instruments and orthotics, meeting the
stringent quality and accuracy requirements of the medical field.
5. Oil and Gas Machine Parts: Crafting essential components like valves, rods, and pins for the oil
and gas industry, ensuring resilience in demanding operational conditions.
6. Prototyping and Modeling: Rapid prototyping and modeling for product development,
facilitating efficient design testing and refinement.
7. Sculptures: Translating digital artistic concepts into tangible sculptures, showcasing the artistic
possibilities of CNC milling.
8. Furniture: Precision crafting of components for furniture, ensuring consistency and quality in
the production of intricate designs.
9. Woodworking: Enabling precision woodworking for the creation of detailed and finely finished
wooden components.
The versatility of CNC milling machines extends across industries, providing a powerful means to
produce parts that demand both intricate detailing and uncompromising 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 are standard machining tolerances?
Standard machining tolerances stand at ± 0.005" or 0.13mm, indicating the acceptable range for
dimensions. If a CNC machining tool is specified with a tolerance of ± 0.01 mm, it implies a
permissible deviation of 0.01 mm in each machining operation. When provided with a drawing,
our CNC machining service can achieve part tolerances as fine as ± 0.0002 in.
In the absence of a drawing, all CNC parts align with our ISO 2768 medium standard. Projects
demanding tighter tolerances, such as ±0.025mm or ±0.001", can be accommodated with an
engineering drawing outlining critical features.
3. How much import duty will I need to pay for my goods?
The amount of import duty for your goods is not standardized and varies based on several factors.
In Australia, the introduction of new CHAFTA regulations allows for a progressive implementation
of duty-free imports. Import duties differ widely and are determined by the type of goods being
imported.
Globally, most countries adhere to international Harmonized System (HS) codes, which categorize
nearly all commercial trade goods.
4. What if I am not completely satisfied with the parts I receive?
We assure the quality of our materials and workmanship based on the terms specified in the
initial order and the information you provide. Disputes arising from subjective assessments will
be handled by our management, who will act in good faith to secure your complete satisfaction.
Our sustained success hinges on earning your confidence in our ability to consistently meet and
exceed reasonable expectations.