What is CNC Milling？

CNC Milling is a modern machining technology that uses a computer numerical control system to control the movement of the milling machine and perform precise cutting on the workpiece. This automated precision machining technology can produce complex three-dimensional shapes and precise geometric features. CNC milling is widely used in various industrial fields such as aerospace, automobile manufacturing, mold manufacturing, and electronic products.

As an important part of modern manufacturing, the development of CNC milling technology has witnessed the transformation of manufacturing from manual workshops to intelligent manufacturing. From the initial simple two-axis control to today's multi-axis linkage, from single metal processing to composite processing of multiple materials, CNC milling technology continues to break through, providing product designers with more room for innovation.

What is CNC milling used for?

CNC milling machining is an important process in the field of modern machining and is widely used in various manufacturing fields. The following are a few simple specific application scenarios:

Mold manufacturing is an important application field of CNC milling. Common molds include plastic injection molds, stamping molds, die-casting molds, etc. Small-diameter ball-end milling cutters are commonly used for fine machining in mold manufacturing. During processing, frequent program optimization and tool path planning are required to ensure precision.

In addition, precision parts such as electronic product housings, radiators, connectors, etc. are also representative products of CNC milling. Such products usually have thin walls and small feature sizes. High-speed cutting technology is required during processing, and special thin-walled parts processing technology is used to strictly control cutting forces and vibrations.

Typical CNC milling parts include engine cylinder blocks, cylinder heads, gearbox housings, and brake discs. These are some of the industry’s most critical components. These products are mostly made of cast iron or aluminum alloy. The processing characteristics are large batches and high efficiency requirements. Usually, multiple processes of roughing, semi-finishing, and finishing are used.

Types of CNC Milling

Milling machines are classified according to the direction of the spindle, either horizontal or vertical. The spindle direction determines the machining method and workpiece positioning. The following are the details of the two methods:

Horizontal Milling

Horizontal milling machines feature a spindle positioned parallel to the worktable. The cutting tool rotates horizontally, making this configuration ideal for machining slots, grooves, and keyways. Heavy workpieces benefit from stable support, while excellent chip evacuation prevents material buildup during extended operations.

Vertical Milling

Vertical milling machines have spindles oriented perpendicular to the worktable. This setup excels at drilling, boring, and surface machining operations. The vertical configuration provides the operator with better visibility and simplifies workpiece setup. Besides, vertical milling is particularly suitable for workpieces that require frequent tool changes.

The following distinctions are made based on the cutting surface of the tool:

Face Milling

Face milling uses the tool's end face for cutting, creating flat surfaces perpendicular to the spindle axis. Large diameter cutters with multiple teeth provide high material removal rates and excellent surface finishes. This method is ideal for machining large flat surfaces and squaring workpiece edges efficiently.

Plain Milling

Plain milling employs the tool's peripheral cutting edges to machine surfaces parallel to the spindle axis. This process, also known as slab milling, efficiently removes material from large, flat surfaces. The cutting action produces a good surface finish while maintaining dimensional accuracy over the length of the workpiece.

Form Milling

Form milling utilizes specially shaped cutters to create complex profiles and contours in a single pass. Custom tool geometries match specific workpiece requirements, enabling efficient production of gears, threads, and intricate shapes. This method reduces setup time while maintaining consistent profile accuracy.

What is CNC milling machine？

CNC milling machines are controlled by computer programs. They use high-speed rotating cutters to remove excess material from the workpiece. CNC milling machines perform multiple operations after being instructed once. Common processes include drilling, boring, cutting, and multi-axis contouring. This combination of precision and efficiency makes CNC milling essential in modern manufacturing.

Types of a Milling Machine

CNC milling machines are controlled by computer programs. They use high-speed rotating cutters to remove excess material from the workpiece. These machines perform multiple operations after being instructed once. Common processes include drilling, boring, cutting, and multi-axis contouring. This combination of precision and efficiency makes CNC milling essential in modern manufacturing.

Ram-Type

Ram-type milling machines feature a movable spindle mounted on a ram, allowing forward and backward movement for enhanced cutting flexibility and versatility.

Knee-Type

Knee-type milling machines have a vertically adjustable worktable mounted on a knee, ideal for small to medium-sized parts and versatile machining operations.

Planer-type

Planer-type milling machine is suitable for processing large workpieces. Its worktable is fixed along the YZ axis, and the spindle can move in the XYZ direction.

Bed-type

The bed-type milling machine table can move along the XYZ axis. Its rigid structure supports high-precision, heavy-load cutting operations.

How much does CNC Milling cost?

The cost of CNC milling depends on various factors, with machining time being the most significant. The milling time mainly depends on two factors: the amount of material removed and the hardness of the material.

Besides, part design also affects cost. Some complex workpieces may require custom-made special tools or be machined using multiple processes. Other cost factors include the type of material used and the overall complexity of the part.

If you are interested in our CNC milling services or a CNC milling quote, please feel free to contact LVMA.

What is CNC milling in IoT？

In the era of the Internet of Things, CNC milling is no longer just a single processing equipment. Through the Internet of Things technology, CNC milling has achieved process optimization such as interconnection, intelligent operation and maintenance. The main combination methods include:

Equipment Networking

Through the Internet of Things, CNC milling machines can be connected to the local area network or the cloud, and communicate with other devices and systems in real time, and are no longer "isolated devices".

• ● Realize remote monitoring and remote control
• ● Support cloud synchronization and management of programs, tools, and process parameters
• ● Establish an Internet of Things system with MES, ERP, cloud platform, etc. to realize data interoperability among multiple systems.

Operation Status Monitoring

IoT sensors can collect real-time operation status data of CNC milling machines, such as:

• ● Spindle speed, feed speed
• ● Vibration, temperature, current, oil pressure, etc. Monitor equipment health through the cloud platform, predict faults, and reduce downtime.

Monitor equipment health through the cloud platform, predict faults, and reduce downtime.

Process Optimization

Collect real-time data and analyze it to improve the milling process. This helps adjust machining parameters, lower energy consumption, extend tool life, and enhance product quality.

Production Visualization

Data during CNC milling (such as order status, output, abnormal conditions). Through intuitive presentation on the IoT platform, factory managers can understand the production status in real time.