CNC drilling machines and CNC milling machines are an important equipment in circuit board processing. The equipment is expensive. The selection of CNC machine tools is important not only for operation, process setting and maintenance, but also for the quality of the products produced.
This is the most important point when choosing. It can't be seen through pictures or ordinary operation. It can only be certified after being purchased. The current equipment can meet the design standard when it leaves the factory. The key is to run one to two years later. The accuracy of the machine is very stable, and the machine tools produced in Europe are better.
The feed rate is currently a general-purpose screw stepper motor with a speed of 25 meters per minute, while the new product has adopted a servo motor. The high feed rate can increase the productivity by 20%-40%, and the Z-axis speed is affected by the drill bit and The influence of the material being drilled on the feed rate has little effect on production efficiency.
At present, most of the measurement systems of CNC machine tools use the light ruler as the position and accuracy measurement feedback system, and also use the magnetic ruler. The system stability and resolution of the light ruler are high, because the read head of the light ruler has no contact with the ruler. Friction, so the life is very long, but usually keep the equipment clean to minimize dust pollution.
If the company does not have a central vacuum system and uses a common industrial vacuum cleaner as a matching device, it should be noted that the vacuum cleaner should have a large power, preferably 30-50% larger than the power required by the original design, due to the plugging power of the filter during actual use. It will drop a lot. Secondly, the vacuum cleaner's powder bag should have sufficient capacity. If the capacity is too small, the workers will often stop working to deal with the dust and affect the production efficiency.
