Dongguan Yexin Intelligent Technology Co., Ltd.
Precision in Every Part, Excellence in Every Detail
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CNC machining, distinct from traditional machining, accomplishes the same metal cutting, drilling,
milling, boring, grinding, and other metal forming and removal functions, but with the key difference
of utilizing computer numerical control instead of manual operation by a skilled machinist.
Traditional machining involves a manual approach where a machinist operates the machine,
removing or forming metal based on specifications from designers and engineers.
This process employs various tools such as turn wheels, dials, switches, chucks, vices, and cutting
tools made of materials like hardened steel, carbide, and industrial diamond. In CNC machining,
the automated process is driven by code developed by programmers, ensuring consistent precision
from the first cut to subsequent repetitions.
Commonly used in digital manufacturing and occasionally in low-volume production, CNC machining
allows for easy revisions and alterations for modifications and diverse materials. While traditional
machining is still relevant, CNC machining has largely superseded it in manufacturing, fabrication,
and industrial production due to its enhanced precision and automation.
Product Details
The primary focus of the CNC machining process revolves around metals, incorporating alloy steel,
carbon steel, cast iron, stainless steel, aluminum, copper, magnesium, and zinc.
Nevertheless, CNC machining extends its capabilities beyond metals to encompass plastic parts
and other materials, including ceramics, composites, thermoplastics, and thermosets.
| 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 |
Post-processing and surface finishes for CNC machining
CNC-machined parts as they emerge from the machine often exhibit visible tool marks, a feature
that may not align with your specific part requirements.
Fortunately, there exists a multitude of post-processing techniques aimed at enhancing the surface
appearance and elevating attributes such as wear resistance, corrosion resistance, and chemical
resistance.
Methods like anodizing, bead blasting, and powder coating present viable options for refining the
final presentation of your custom parts, allowing you to achieve the desired surface quality and
performance characteristics.
| Surface Finishing Options for CNC Machining | ||
| Name | Applicable Materials | Can be Applied with |
| Alodine | Aluminum | Media Blasting, Tumbling, Type II Anodizing* Type III Anodizing*, Type III Anodizing with PTFE* |
| Anodizing | Aluminum | Media Blasting, Tumbling, Alodine* |
| Black Oxide | Steel, Stainless Steel | Media Blasting, Tumbling, Passivation |
| Electroless Nickel Plating | Aluminum, Steel, Stainless Steel | Media Blasting, Tumbling |
| Electropolishing | Steel, Stainless Steel | — |
| Hand Polishing | Acrylic | Enhanced cosmetic appearance |
| Media Blasting | Aluminum, Steel, Stainless Steel, Brass, Bronze, Copper | All post processes except Electropolish and Powdercoat |
| Nickel Plating | Aluminum, Steel, Stainless Steel | Media Blasting, Tumbling |
| Passivation | Steel, Stainless Steel | Black Oxide, Electroless Nickel Plating, Zinc Plating, Tumbling, Media Blasting |
| Powder Coating | Aluminum, Steel, Stainless Steel | — |
| Tumbling | Aluminum, Steel, Stainless Steel, Brass, Bronze, Copper | All post processes except Electropolish and Powdercoat |
| Vapor Polishing | CNC Polycarbonate (Clear, Black) | Enhanced cosmetic appearance, near optically clear applications |
| Zinc Plating | Steel, Stainless Steel | Media Blasting, Tumbling, Passivation |
Applications of CNC Machining
CNC machining finds widespread application across diverse industries, playing a crucial role in
aerospace, automotive, consumer electronics, robotics, and agriculture, especially in the fabrication
of metal components.
Moreover, it is extensively employed in the production of medical devices, household goods, and
various consumer applications. The influence of CNC machining is also evident in sectors like
energy and oil and gas, solidifying its status as one of the most prevalent and indispensable
manufacturing processes worldwide.
Company Profile
FAQ's
1. Does you provide export molds?
Yes, we do provide export molds. It's essential to note that our tooling is designed to be compliant
with our Modular Unit Dies (MUD). This implies that the tools have a uniform base size.
Therefore, customers should be ready to receive tools of that size to ensure compatibility with
their machines.
2. What if I am not completely satisfied with the parts I receive?
Our commitment extends to guaranteeing the quality of our materials and workmanship in
accordance with the terms specified in the initial order and the information supplied by you.
Any disputes arising from subjective assessments will be addressed by our management, which
will make every effort in good faith to ensure your complete satisfaction.
The foundation of our ongoing business is built on earning your confidence in our capacity to meet
and surpass reasonable expectations.
3. Do you offer Quick-Turn CNC Machining?
Absolutely! We provide rapid turnaround times for quick-turn parts, with many available in just
3-4 days. Additionally, we offer an expedite option, and our dedicated team collaborates closely
with you to meet your most urgent deadlines.
4. What are the minimum and maximum dimensions you can machine?
Our CNC machining services cover a range of processes, including milling (3-axis, 3+2-axis, and
5-axis) and turning. In 3/3+2-axis CNC milling, we can machine parts with dimensions up to
2000 x 1500 x 200 mm (78.7 x 59.0 x 7.8 in.). For 5-axis milling, the maximum part size is
650 x 650 x 300 mm (25.5 x 25.5 x 11.8 in.).
CNC turning allows for a maximum diameter of 431 mm (17 in.) and a length of 990 mm (39 in.).
When considering smaller parts, we recommend a minimum size of around 10 x 10 x 10 mm
(0.39 x 0.39 x 0.39 in.), with feature dimensions not going below 0.5 mm.
It's important to note that our platform has a maximum part size limitation of 1000 mm (39 in.).
For larger requirements, please reach out to our sales team for personalized assistance.