Custom Stainless Steel CNC Machining Services Milling CNC Machining Part
Machinery Part
CNC machining represents the predominant subtractive manufacturing technology in today's
industry, providing an exceptionally versatile and robust method for crafting personalized metal
and plastic parts. Utilizing CAD models, CNC machines precisely eliminate material from solid
blocks using various cutting tools.
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
CNC milling, characterized by its efficiency, precision, and automation, is a transformative force
across various industries. Machine shops, serving as crucial entities in the manufacturing process,
provide essential services for prototypes and full production runs.
The electronics industry relies extensively on CNC machines for crafting components such as
electronic enclosures and circuit supports. In the commercial sector, CNC cutting heads play a key
role in producing cost-effective parts, streamlining production processes.
The oil and gas industry utilizes CNC machines for the fabrication of drill bits, cylinders, pins, rods,
valves, and more. The medical industry benefits from CNC milling in the production of diverse
components, including implants, surgical equipment, and medical devices. Lastly, the aerospace
industry demonstrates a constant demand for CNC machined parts, employing this technology to
create intricate, customized components vital for aerospace equipment.
Company Profile
FAQ's
1. Can make design drawings for me?
Unfortunately, we don't offer an independent product design service. However, for all approved
orders, we provide a Design for Manufacturing review. This involves collaborating with our clients
to enhance their 2D and 3D drawings, ensuring better manufacturability, resolving design conflicts,
and reducing production costs. Learn more about preparing your CAD drawings for manufacturing.
2. How does you ensure the quality of my parts?
Upon confirmation of your order, a comprehensive Design for Manufacturing (DFM) review is
conducted to identify any potential issues that could impact the quality of your parts.
All incoming materials undergo thorough inspection and verification using a suite of testing
equipment. Final inspection reports are generated before shipment.
Additionally, we offer real-time sharing of inspection data, fostering collaboration to address any
quality concerns that may arise during production.
3. Do you offer reverse engineering services or suggest cost saving measures?
We offer reverse engineering services, allowing us to extract design and engineering information
from a wide range of manufactured components. Our expertise goes beyond mere reproduction
– we can aid in designing your part, recommending optimal raw materials, and selecting the most
efficient machining protocols and finishing steps.
With the end-use of the part in focus, we often identify minor design adjustments, material
changes, or tolerance modifications that can potentially reduce the cost of your part without
compromising quality or performance.
4. What size of fillets are added when no specific fillet is specified by the 3D model
or drawing?
In the absence of a specified fillet radius in the 3D model or drawing, the machinist will add fillet
radii based on discretion to facilitate easy machining. Should a specific fillet radius be required,
clear specification is essential. As a general guideline, internal vertical edge radii might exceed
1/3 of the depth, while internal horizontal edges may either be left sharp or feature a radius
ranging from 0.5mm to 1mm.
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