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CNC, short for computer numerical control, defines a machining
process driven by computer
commands. This technology enables faster, more accurate, and
intricate part production
compared to manual methods.
CNC machining reduces reliance on manual labor while enhancing
precision and complexity.
Although humans are vital for programming and machine operation,
the physical machining
tasks are automated. This synergy between human expertise and
computer-driven automation
ensures seamless and efficient operations.
Product Details
CNC machining stands out for its efficiency and the minimal wastage
it generates. Thanks to its
precision and accuracy, properly designed parts rarely result in
faulty cuts, significantly reducing
the need to discard damaged components.
CNC machines excel at precise cuts and angles, minimizing material waste.
Here is a comprehensive overview of the most popular materials.
| The Most Popular Materials |
| Name | Characteristics |
| Aluminum 6061 | Good strength-to-weight ratio, excellent machinability, low
hardness |
| Stainless Steel 304 | Excellent mechanical properties, resistant to corrosion & acid, relatively difficult to machine |
| Brass C360 | High ductility, excellent machinability, good corrosion resistance |
| ABS | Excellent impact resistance, good mechanical properties,
susceptible to solvents |
| Nylon (PA6 & PA66) | Excellent mechanical properties, high toughness, poor moisture
resistance |
| POM (Delrin) | High stiffness, excellent thermal & electrical properties,
relatively brittle |
| Surface Finishes |
| Name | Applicable to | Machining marks |
| As machined | Metals, Plastics | Visible, light surface scratches |
| Smooth machining |
| Fine machining | Metals | Slightly visible |
| Polishing | Metals | Removed on primary surfaces |
| Bead blasting | Metals | Removed for non-cosmetic, removed on primary surfaces for cosmetic |
| Brushing | Metals |
| Anodizing Type II | Aluminum |
| Anodizing Type III | Aluminum | Visible under anodizing |
| Black oxide | Copper, Stainless steel, Alloy steel, Tool steel, Mild steel | Visible |
| Powder coating | Metals | Removed |
| Brushed + electropolishing | Stainless steel | Removed on Primary surfaces |
Specialist Industries
CNC machining services find applications in various industries,
catering to specific needs
and demands:
1. Transportation: CNC turning plays a vital role in crafting
components for the aerospace,
automotive, mass transit, rail, locomotive, military, and trucking
sectors.
These industries rely on CNC machines to produce essential parts
like headnuts, gear blanks,
bearing blocks, levers, axles, and rotors for transportation
equipment.
2. Construction: The construction industry requires robust
components capable of withstanding
heavy loads. CNC machining is frequently employed to manufacture
bolts and screws from
materials like stainless steel and aluminum, essential for assembly
and fastening tasks.
3. Automotive: CNC turning services are indispensable in the
automotive sector, producing critical
auto parts including cylinder heads, connecting rods, camshafts,
transmission components like
shafts and rings, suspension parts such as sway bars, control arms,
tie rod ends, as well as various
items like bushings and bolts.
4. Aviation: The aviation industry heavily relies on CNC turned
parts for customization and the
production of probes, joint connectors, fasteners, and engine and
aircraft components.
Many aviation components utilize titanium due to its ability to
withstand extreme temperature
variations, making it a preferred material for critical
applications.
Company Profile
FAQ's
1. What Are the Machining Limits for Dimensions?
We offer a wide range of CNC machining services, including CNC
milling
(3-axis, 3+2-axis, and 5-axis) and turning.
When it comes to milled parts, our capabilities extend to
dimensions of up to
2000 x 1500 x 200 mm (78.7 x 59.0 x 7.8 in.)
for 3/3+2 axis CNC milling, while for 5-axis milling, the maximum
part size accommodated is
650 x 650 x 300 mm (25.5 x 25.5 x 11.8 in.).
For CNC turning, we can handle parts with a maximum diameter of
431mm (17 in.)
and a length of 990 mm (39 in.). On the smaller end, we recommend
minimum part dimensions
of around 0.39 x 0.39 x 0.39 inches (10 x 10 x 10mm), with a
minimum feature dimension
of 0.5 mm.
Please note that our platform has a size limitation of up to 1000
mm (39 in.) for parts.
If you require larger dimensions, you can submit a request through
our sales team for
further assistance.
2. Cost Considerations for CNC Machining Materials
The cost of materials in CNC machining can fluctuate significantly
due to the extensive array of
available options. Each material carries its unique price tag, and
the inherent physical properties
of each material play a substantial role in determining machining
costs.
For those seeking to manufacture metal components, Aluminum 6061
stands out as the most
cost-effective choice. On the other hand, ABS ranks as the most
budget-friendly option among
materials.
As for the influence of machining complexity on costs, stainless
steel serves as an illustrative
example. Its inherent hardness, surpassing that of aluminum,
renders it more challenging to
machine, consequently elevating the overall machining expenses.
3. Typical Surface Finish for CNC Milled and Turned Parts
In the realm of CNC machining, as-machined milled parts typically
exhibit a surface roughness
of approximately 3.2μm (or 1.6μm in the case of relatively new
machines).
On the other hand, when it comes to turned parts, we can achieve a
smoother surface with a
roughness of 0.8μm. This means that machining speed adjustments are
not necessary to attain
this level of surface finish.
