What are the configuration requirements for high-speed CNC machining

The spindle bearings for high-speed CNC machining should have characteristics such as high accuracy, good stiffness, stable operation, and low thermal expansion. There are several types of spindle bearings for high-speed CNC machining: transmission belt type, transmission gear type, direct connection type, and high-speed electric spindle.

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High speed CNC machining can apply direct connection spindle bearings and high-speed electric spindles, while most other spindle bearings cannot meet the basic speed ratio requirements of the high-speed CNC machining management center. The rotation speed ratio of high-speed CNC machining spindle bearings should not be less than 10000rpm, so high rotation speed ratios can only be exceeded by direct connection spindle bearings and high-speed electric spindles.

 

In CNC lathes, it can be said that improving the drilling and cutting speed of CNC lathes is equivalent to improving production and processing efficiency. This is especially true for high-speed CNC machining centers, where the drilling and cutting speed is generally between 20-40m/min, and natural drilling and cutting speed is not uncommon. The comprehensive application of servo motors has enabled high-speed CNC machining to have a qualitative leap forward, with multiple improvements in production efficiency and precision.

 

The driving method of the servo motor is a non touch immediate driving method, with fewer moving components and no distortion and deformation problems. By using this type of technology, the production and manufacturing of CNC lathes exceed the level that traditional ball screws cannot surpass. The servo motor has high instantaneous speed and deceleration characteristics, with an instantaneous speed of 2g, 10-20 times that of traditional drive equipment, and a cutting speed of 4-5 times that of traditional drive equipment.

 

CNC machine tools for high-speed CNC machining have higher regulations than general CNC machining centers. CNC machine tools for high-speed CNC machining must have rapid data processing methods and higher engineering characteristics. And high-speed CNC machining with four or five axes is also suitable for this. Firstly, choose CNC machines with 32-bit or 64 CPUs, which are very powerful and cannot be matched by ordinary CNC machines.

 

Regulations on high-speed CNC machining of CNC blades: high-speed CNC machining of CNC blades does not mean the type of CNC blade, but only the material of CNC blade for high-speed CNC machining. Common CNC blade materials for high-speed CNC machining include polycrystalline diamond, cubic boron nitride, and hard coated CNC blades. Good CNC blades can lead to a higher aspect ratio development trend in cutting parameters.

 

To carry out rotor dynamic balance for NC blade structure, it is necessary to carry out rotor dynamic balance for NC blade with very long bobbin overhang, so as to avoid the risk to high-speed CNC processing operators due to centripetal force caused by high speed, resulting in the breakage of bobbin or cutter head with low tensile strength and impact toughness. The selection of software for the collet system can also jeopardize the repeated precision of fully automatic tool changing and the rigidity of CNC blade drilling. At present, the software for the collet system generally selects single and double sided clamping collet system software with a 7:24 finish.