A CNC machine tool (Computer Numerical Control Machine Tool) is a machine tool that uses a computer numerical control system for automatic control. CNC machine tools are widely used in machining, mold making, automobile manufacturing, aerospace, and other fields. Based on the classification criteria and types of CNC machine tools, we can elaborate on them in detail from the following aspects:
Classification by processing method
CNC machine tools can be classified according to their machining methods into lathes, milling machines, drilling machines, grinding machines, boring machines, planers, broaching machines, etc. These machine tools are used for different types of machining tasks. For example, lathes are mainly used for machining rotating bodies, milling machines are used for machining planes and curved surfaces, and drilling machines are used for machining holes, etc.
1.1 Lathe
Lathes are the most common type of CNC machine tool, mainly used for machining rotating bodies. Lathes can be classified into CNC lathes, CNC vertical lathes, and CNC horizontal lathes, among others. CNC lathes are characterized by high precision, high efficiency, and high automation, making them suitable for mass production.
1.2 Milling Machine
Milling machines are mainly used for machining planes, curved surfaces, grooves, etc. Milling machines can be classified into CNC vertical milling machines, CNC horizontal milling machines, and CNC gantry milling machines. CNC milling machines have advantages such as a wide machining range, high machining accuracy, and strong adaptability.
1.3 Drilling machine
Drilling machines are mainly used for machining holes, including through holes, blind holes, and threaded holes. Drilling machines can be divided into CNC vertical drilling machines and CNC horizontal drilling machines. CNC drilling machines are characterized by high machining speed, high precision, and ease of operation.
1.4 Grinding machine
Grinding machines are mainly used for processing various hard materials, such as metals and ceramics. Grinding machines can be divided into CNC surface grinders, CNC internal and external cylindrical grinders, and CNC tool grinders. CNC grinding machines have advantages such as high machining accuracy, good surface quality, and high degree of automation.
1.5 Boring machine
Boring machines are mainly used for machining holes and slots in large parts. Boring machines can be divided into CNC vertical boring machines and CNC horizontal boring machines. CNC boring machines are characterized by a wide machining range, high precision, and strong adaptability.
1.6 Planer
Planers are mainly used for machining flat surfaces, inclined surfaces, grooves, etc. Planers can be divided into CNC vertical planers and CNC horizontal planers. CNC planers have advantages such as high machining accuracy, simple operation, and strong adaptability.
1.7 Lathe bed
Broaching machines are mainly used for machining the internal holes and external diameters of long parts. Broaching machines can be divided into CNC vertical broaching machines and CNC horizontal broaching machines. CNC broaching machines are characterized by high machining accuracy, high production efficiency, and ease of operation.
Classification by number of control axes
CNC machine tools can be classified into two-axis, three-axis, four-axis, five-axis, etc., according to the number of control axes. The more control axes, the higher the machining capability and flexibility of the machine tool.
2.1 Two-axis CNC machine tool
Two-axis CNC machine tools have two motion axes and are mainly used for simple machining tasks. They have a simple structure, low cost, and are suitable for basic machining and teaching purposes.
2.2 Three-axis CNC machine tool
Three-axis CNC machine tools have three motion axes, enabling them to perform relatively complex machining tasks. They are widely used in machining, mold manufacturing, and other fields, offering high machining accuracy and production efficiency.
2.3 Four-axis CNC machine tool
Four-axis CNC machine tools have four motion axes, enabling them to perform more complex machining tasks. They are suitable for machining parts with complex curved surfaces and polyhedra, offering high machining accuracy and production efficiency.
2.4 Five-axis CNC machine tools
Five-axis CNC machine tools have five motion axes, enabling them to perform extremely complex machining tasks. They are widely used in aerospace, automotive manufacturing, and other fields, offering exceptional machining accuracy and production efficiency.
Classification by CNC system
CNC machine tools can be classified into open CNC systems, closed CNC systems, etc., according to their CNC systems.
3.1 Open CNC System
Open CNC systems offer good compatibility and scalability, and can be customized to meet user needs. They are suitable for high-end CNC machine tools and possess high technological content and added value.
3.2 Closed-loop CNC system
Enclosed CNC systems offer good stability and reliability, making them suitable for low- to mid-range CNC machine tools. They also have lower costs, making them suitable for mass production.
Classification by machine tool structure
CNC machine tools can be classified into vertical, horizontal, and gantry types according to their structure.
4.1 Vertical CNC Machine Tools
Vertical CNC machine tools have columns perpendicular to the ground, providing good rigidity and stability. They are suitable for machining large and complex parts.
4.2 Horizontal CNC Machine Tools
Horizontal CNC machine tools have a horizontally placed worktable, offering good operability and machining range. They are widely used in machining, mold making, and other fields.
4.3 Gantry CNC Machine Tool
Gantry CNC machine tools have a large machining range and height, making them suitable for machining large and complex parts. They offer high machining accuracy and production efficiency.
In summary, the classification of CNC machine tools is mainly based on machining methods, number of control axes, CNC system, and machine tool structure. Different types of CNC machine tools have different characteristics and application areas, and users can choose the appropriate CNC machine tool according to their needs.
