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CNC turning is a manufacturing process that creates parts by securing a raw material blank on a
rotating chuck and then precisely removing material using stationary cutting tools.
This technology is particularly well-suited for crafting parts that possess symmetry along their
central axis. Typically, turned parts can be produced more quickly and cost-effectively
compared to milled parts.
Product Details
The turning process primarily involves the machining of various metals.
These metals encompass a wide range of materials, including alloy steel, carbon steel, cast iron,
stainless steel, aluminum, copper, magnesium, and zinc.
Nevertheless, it is essential to note that the turning process is not limited to metals alone;
it can also be applied to plastic components and a diverse array of materials such as ceramics,
composites, thermoplastics, and thermosetting materials.
| 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. |
| POM | High stiffness, high accuracy, low friction, easy to machine. |
| ABS | Common thermoplastic, impact resistant, easy to machine. |
| Nylon | Excellent mechanical properties, thermal, chemical and abrasion resistant. |
CNC Machining Tolerances
Typical machining tolerances fall within the range of ± 0.005 inches or 0.13 millimeters.
Tolerances represent the allowable variation for a specific dimension.
For instance, if a CNC machining tool has a tolerance of ± 0.01 millimeters, it means that the tool
can deviate by 0.01 millimeters in each cut.
When provided with a drawing, Our CNC machining service can achieve CNC parts with tolerances
as tight as ± 0.0002 inches.
In the absence of a drawing, all CNC parts are manufactured according to our ISO 2768 medium
standard. We can also work to even tighter tolerances, such as ± 0.025 millimeters or ± 0.001
inches, when an engineering drawing specifies critical features.
| CNC Turning 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. | ||
Applications of CNC Turning
Various industries harness the capabilities of CNC machining to enhance efficiency and precision
in mass production. These industries include:
1. Aerospace:
CNC machinery is pivotal in the aerospace industry for the
fabrication of intricate and precision
components used in aircraft and spacecraft.
2. Automotive Parts Manufacturing:
The automotive industry extensively relies on CNC machining for the
production of precise and
customized components used in vehicles.
3. Medical Machine Manufacturing:
CNC machining plays a crucial role in the medical industry,
contributing to the manufacturing
of intricate components for medical devices and equipment.
4. Transportation:
Industries involved in transportation, such as railways and mass
transit, utilize CNC machinery
for the production of components ensuring efficient and reliable transportation.
5. Defense:
The defense industry benefits from CNC machining for the production
of accurate and complex
components essential for various defense applications.
6. Marine:
In the marine industry, CNC machinery is employed for the
manufacturing of precision parts
used in boats and marine equipment.
7. Oil and Gas:
The oil and gas industries leverage CNC machining to fabricate
components used in exploration,
drilling, and extraction processes.
8. Electronics:
The electronics industry relies on CNC machinery for the production
of intricate components
used in electronic devices, ensuring precision and reliability.
Company Profile
Advantages of the Turning Process
The turning process offers several advantages, including:
1. Versatile Material Compatibility:
Turning can be applied to a wide range of materials, including
metals, wood, and plastics,
making it a highly versatile manufacturing process.
2. Exceptional Tolerance:
Turning allows for the creation of parts with exceptionally high
tolerances. Its ability to achieve
precise surface finishes and tight tolerances makes it ideal for adding precision rotational features
to already formed parts.
3. Short Lead Time:
Turning is known for its short lead time, which refers to the time
between order placement and
final delivery. The efficiency of the turning process contributes to its quick turnaround.
4. Minimal Operator Expertise Required:
Unlike some complex machining processes, turning does not demand a
highly skilled machine
operator. A machinist can attain certification from an accredited industrial training organization
after completing a standard amount of coursework to operate a CNC lathe effectively.
5. Adjustable Material Removal Rate:
Turning offers the advantage of adjustable material removal rates.
Lathes can operate at varying
speeds, allowing for precise control over material removal based on factors like the material being
machined and the desired end product.
These advantages make the turning process a valuable choice in
manufacturing, offering flexibility,
precision, efficiency, and ease of operation across a broad spectrum of materials and applications.
