With the continuous advancement of social productivity, people's performance and usage requirements for production tools are also increasing. In the past, metal processing mainly relied on conventional **machine tools**, where the accuracy of machined parts was heavily dependent on the operator's skill. However, with the widespread adoption of **CNC machine tools**, the precision of the workpiece is no longer determined by human factors but by the advanced technology of the **CNC machine tools** themselves. In this article, I'd like to share my personal experience comparing imported CNC machining centers with domestic ones.
My company specializes in the processing and production of axle components for automobiles, which is a high-precision, high-value manufacturing process. The main equipment we use includes CNC lathes and CNC machining centers. About 75% of our machines are imported, while only 25% are domestic. Some might wonder why we don't rely more on domestic models. The truth is that although China's equipment industry has made significant progress in recent years, there are still considerable gaps in design, assembly, precision, and after-sales service compared to foreign manufacturers.
First, the system ladder diagrams of imported CNC machining centers are much more detailed. For example, when a **machine** fails, it provides clear information about the fault location, and sometimes even suggests how to resolve it. If you're used to working with imported machines, you may find domestic ones quite inconvenient. Take a simple issue like a worn-out cable causing a short circuit: an imported machining center will clearly display the fault location, allowing quick troubleshooting within minutes. On the other hand, many domestic machines just flash a warning light without any specific details, making it time-consuming and frustrating to locate and fix the problem.
Secondly, imported CNC machining centers have better line orientation and protection systems compared to domestic ones. They are generally well-organized, standardized, and safer. It's rare to see wires wearing out or causing open circuits. However, in domestic models, wiring issues are more common due to poor organization and lack of protection. This makes maintenance difficult—space is limited, and replacing worn cables is not easy.
Here is a photo showing the wiring layout of the domestically produced XH716E CNC machining center. As you can see, the wires are exposed and unprotected, often leading to wear and damage. Maintenance staff usually just connect broken wires and cover them with a layer of corrugated tubing, which isn’t ideal. In contrast, imported machines rarely face such issues, thanks to their superior design and protection.
Additionally, the overall protection and peripheral piping of imported CNC machining centers are much better. You won’t typically see iron shavings or coolant leaks around the machine. The piping and wiring are neatly organized and user-friendly. In contrast, domestic machines often suffer from coolant leaks and messy wiring. This problem has persisted for years, regardless of whether the machine is imported or domestic.
Here’s a picture of the protective structure and peripheral piping of the XH716E model. As shown, coolant and metal chips are scattered everywhere, and the pipes are dragged across the floor in disarray.
In summary, while domestic CNC machining centers have made some progress, they still lag behind in several key areas, including fault diagnosis, wiring protection, and overall design. I hope that domestic manufacturers will take inspiration from these experiences and continue to improve the quality, reliability, and user-friendliness of their equipment.
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