The overall structural characteristics of the machining center are mainly reflected in the following aspects:
1. Main machine structural characteristics
1.1 Bed:
The bed is the foundation of the entire machine tool, usually using integral castings or welded structures to ensure sufficient rigidity and stability.
The design of the bed requires that it can withstand various loads generated by the machine tool during the machining process, including clamping force, cutting force, etc.
1.2 Column and gantry:
The column is used to support the spindle box and guide rails to ensure stability and accuracy during the cutting process.
The gantry structure is common in large machining centers, such as gantry machining centers, which provides higher rigidity and stability and is suitable for machining heavy loads and large-size workpieces.
1.3 Workbench:
The workbench is used to place workpieces and realize the feeding and positioning of workpieces.
The design of the workbench requires sufficient load-bearing capacity and accuracy to ensure machining quality.
1.4 Spindle system:
The spindle system is responsible for realizing cutting motion and is one of the key components of the machining center.
The spindle system is required to have the characteristics of high precision, high rigidity and high speed to meet different machining requirements.
2. Structural features of the control part
2.1 CNC system:
The CNC system is the brain of the machining center, which is used to realize various machining operations and controls.
Advanced CNC systems have high precision, high stability and rich functions, which can ensure the accuracy and consistency of the machining process.
CNC systems usually include programming, control, monitoring and diagnosis functions, which are convenient for users to perform machining operations and machine tool maintenance.
2.2 Automatic tool change system:
The automatic tool change system can automatically change different types of tools to meet different machining needs, significantly improving production efficiency.
The tool magazine has various forms, including disc type, bucket type and chain type, which can be selected according to the machine tool model and machining needs.
2.3 Multi-axis linkage capability:
The machining center usually has X, Y, and Z three-axis linkage capabilities. Some advanced machine tools also support additional axes (such as rotary axes A, B, C, etc.) to achieve linkage processing of five or more axes.
Multi-axis linkage capability can more flexibly handle machining tasks of complex surfaces and angles, and improve machining accuracy and efficiency.
3. Other structural features
3.1 Lubrication system:
The lubrication system is used to ensure the lubrication and cooling of various parts of the machine tool, reducing wear and failure rate.
Advanced lubrication systems usually adopt active lubrication, control oil supply on demand through the CNC system, and can warn of potential oil circuit problems in advance.
3.2 Protection and chip removal device:
The machining center is usually equipped with protection devices, such as protective covers, protective doors, etc., to ensure the safety of operators and the normal operation of the machine tool.
The chip removal device is used to timely remove the chips and coolant generated during the cutting process to keep the machine tool clean and dry.
In summary, the overall structural characteristics of the machining center are reflected in the high rigidity and stability of the bed, column and gantry, workbench and spindle system of the main machine; the high precision and efficiency of the CNC system, automatic tool change system and multi-axis linkage capability of the control part; and the perfection and reliability of other structural features such as the lubrication system, protection and chip removal devices. These characteristics jointly ensure the high use value and competitiveness of the machining center in the mechanical processing industry.
