CNC Aluminum Spare Parts Metal Fabrication CNC Machining Parts CNC Milling
Parts Stainless Steel CNC Machining Service
CNC machining is a subtractive manufacturing process, meaning it achieves its final product by
removing material.
It involves tasks like drilling holes, creating slots and pathways, and shaping metal stock into
different forms with varying dimensions and designs.
Unlike additive manufacturing, which builds up materials layer by layer, CNC machining subtracts
material to create shapes.
It also differs from injection molding, where material is injected into a mold to form a specific shape.
CNC machining is highly versatile and compatible with a wide range of materials, including metals,
plastics, wood, glass, foam, and composites.
This versatility has made CNC machining a popular choice in various industries, offering efficient
and precise fabrication for designers and engineers.
Product Details
CNC machines excel at cutting a wide range of materials, including aluminum, bronze, copper,
ceramics, plywood, various steel types, stone, wood, zinc, and numerous engineering materials.
This versatility makes them perfect for crafting prototypes during product development.
With CNC milling, you can easily fine-tune and make precise adjustments until you achieve the
desired final product, offering accuracy and efficiency throughout the manufacturing process.
Common Materials | |
Name | Description |
Aluminum | High machinability and ductility, good strength-to-weight ratio. |
Stainless steel | High tensile strength, corrosion and temperature resistant. |
Mild steel | High machinability and weldability, high stiffness. |
Brass | Low friction, excellent electrical conductivity, golden appearance. |
Copper | Excellent thermal and electrical conductivity. |
Titanium | Excellent strength to weight ratio, used in aerospace, automotive and medical industries. |
ABS | Common thermoplastic, impact resistant, easy to machine. |
Nylon | Excellent mechanical properties, thermal, chemical and abrasion resistant. |
POM | High stiffness, high accuracy, low friction, easy to machine. |
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 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 |
CNC Machining Applications
Machined parts are widely used in a slew of industries, including aerospace, defense, robotics,
oil & gas, medical technology, research and more.
Company Profile
FAQ's
1. What are your tolerances for machined parts?
Our tolerances for machined parts are typically within +0.005"/-0.005" for most metal geometries,
and within +/- 0.010" for plastics.
However, tolerances may vary for larger parts, especially when maintaining flatness over extensive
sections post-heat treatment.
Regarding the finish requirements, an "As Milled" finish should have a minimum of 125 surface
finish for CNC parts.
For all fabricated parts, there is a dimensional tolerance of 0.010" and an angular tolerance of 1°.
Please note that tapped holes not explicitly indicated as features in the provided CAD model may
be machined to the specified diameters in that model.
Additionally, surface treatments like anodizing, bead blasting, iriditing, powder coating, etc.,
will only be applied if they have been paid for and explicitly acknowledged in advance.
2. What are the default fillet sizes in the absence of specified dimensions from the 3D
model or drawing?
When specific fillet dimensions are not provided, we will apply fillet radii that facilitate machining,
as determined by our machinists' judgment.
If you require a particular fillet radius, please ensure it is specified.
In the absence of specific details, typical internal vertical edge radii may exceed 1/3 of the depth,
while internal horizontal edges can be either left sharp or have a radius ranging from 0.5mm to
1mm, depending on the machining requirements.
3. Benefits of CNC Machining
CNC machining offers several advantages, including:
1. Precision: CNC machines are capable of producing parts with exceptional precision, ensuring
consistent quality and eliminating human error.
2. Continuous Operation: CNC machines can operate 24/7 as long as they have a steady supply
of raw materials and fresh cutting tools. Robotic systems can be employed for material loading
and part unloading without the need for human intervention.
4. Can you provide passivation for my parts?
We offer passivation as a treatment option that can modify the surface chemistry of certain types
of metals.
This process is utilized for purposes such as corrosion protection, enhancing durability, improving
aesthetics, and more.