CNC machining centers are more expensive than other metalworking equipment and are therefore subject to certain constraints. Choosing the right equipment is crucial, and choosing a reliable brand will maximize its value. When purchasing a CNC machining center, carefully consider these five key factors:
1. CNC Machining Center Rigidity
Because the rigidity of a CNC machining center directly impacts production efficiency and machining accuracy, the price and speed of a CNC machining center are significantly higher than those of standard equipment, and the motor power standards are also higher, their structural design rigidity must be significantly higher than that of standard equipment.
When ordering equipment, consider process requirements, torque, torque, axial force, and economic maximum values, and follow the manufacturer’s specifications. To achieve high rigidity, consideration is often not limited to part size. 反而, choose equipment that’s one or two sizes larger than the part size.
2. CNC Machining Center Processing Accuracy
Processing accuracy directly impacts product quality. Many people make purchasing decisions based on equipment accuracy.
It’s important to note that processing accuracy and equipment accuracy are two different concepts. It’s incorrect to mistake the positional accuracy listed in the manufacturer’s catalog or product certificate for the equipment’s processing accuracy.
The positional accuracy listed in the catalog or certificate represents the accuracy of the machine tool itself, while processing accuracy is the sum of the errors generated by various factors in the entire process system, including the tolerances of the equipment itself. When selecting a model, consider the process flow before deciding on the model.
3. CNC Machining Center CNC System
The CNC center is the brain of the CNC machine. CNC functions are divided into basic functions and optional functions. Basic functions are built into the machine itself, while optional functions are user-defined functions.
After deciding on a machine model, additional features are typically added by the manufacturer. The CNC system’s features must be selected based on the machine tool’s functional requirements. When ordering, ensure all required features are fully documented to avoid wasted time due to low utilization.
It’s also important to consider the interdependencies between functions. Among the CNC systems available for selection, functionality varies significantly. Selection should be based on requirements, avoiding single-minded pursuit of high performance to avoid waste.
When selecting multiple machines, it’s best to use systems from the same manufacturer whenever possible to facilitate subsequent use, 手术, 编程, 和维护.
4. Number of Coordinate Axes and Linked Axes
The number of coordinate axes and linked axes should meet typical machining requirements. The number of coordinate axes is also a hallmark of the machine’s level.
一般来说, for machines from the same manufacturer, using the same standards and with the same accuracy, adding a standard axis increases the cost by approximately 35%.
Does adding more axes enhance the functionality of the equipment? 最终, the balance between process requirements and capital expenditures still needs to be considered.
5. Active Tool Changer and Tool Magazine Capacity
When selecting an active tool changer, consider tool change time and reliability. Short tool change times can improve productivity, but tool changers are generally complex, have high failure rates, and are expensive.
Overemphasizing tool change time can significantly increase costs and lead to increased failure rates. According to statistics, approximately 50% of CNC machining center failures are related to active tool changers.
所以, while meeting operational requirements, choose highly reliable active tool changers to reduce failure rates and equipment costs.
The workload of active tool changers and tool magazine capacity directly impact the functionality and machining quality of the CNC machining center. Tool magazine capacity is generally based on the tool requirements required to process a complex part.
About RapidEfficient
RapidEfficient specializes in high-precision CNC machining with 18 years of experience. Its products cover medical, communications, optics, drones, intelligent robots, 汽车, and office automation parts.
The company’s CNC machining centers include four-axis, 五轴, and linkage machine tools, and are equipped with precision projectors, three-coordinate measuring machines, spectrometers, and other precision testing equipment.
- Machining accuracy: 到 0.01 毫米
- Testing accuracy: up to 0.001mm
