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What are the machining accuracy grades of CNC machining centers?

  • 2021-11-12 09:51:48
Shenzhen Far East Excellence Technology Co., Ltd. is a powerful manufacturer specializing in high-precision CNC machining. It owns more than 200 imported CNC machining centers, cutting machines, turning and milling machining centers. We most know that the CNC machining industry know that the precision of CNC machining is divided into levels. Next, Far East Excellence Precision Technology will take you to understand the level of CNC machining.

Generally speaking, according to the classification of international precision tolerance grades, IT6 is widely used in important matching indexes for machining. IT6 indicates that the mating surface has a higher uniformity requirement, which can ensure a very high mating property, stable and reliable in use, and the machining center can complete various processes such as drilling, milling, boring, expansion, reaming, and rigid tapping.

1. Drilling
The machining accuracy of drilling is low, the tolerance level generally can only reach IT10, and the surface roughness of the workpiece is generally 12.5-6.3μm. However, after drilling is completed, reaming and reaming are often used for subsequent semi-finishing and finishing.

2. Milling
The precision tolerance level of finishing milling in milling is generally up to IT16-IT8, and the surface roughness of the workpiece under this tolerance precision processing standard is 0.63-5μm.

3. Boring
Boring generally has a tolerance level of IT9-IT7 for the boring accuracy of steel-shaped workpieces, and the surface roughness is 2.5-0.16μm.

In the current machining process, the precision of grinding is the highest and the tolerance level is the lowest. The tolerance level of stamping and die-casting is high. Only by understanding the precision tolerance of each process can we let the CNC machining center play its high-precision characteristics. Different products in different industries have different precision levels. As practitioners and manufacturers, they must understand and pay attention to the actual needs of users' products. For example, medical and auto parts have relatively high precision requirements. The accuracy requirements are relatively low. Far East Excellence Technology serves users with a complete set of rigorous and complete product solutions. With years of industry accumulation, we will provide you with high-quality and professional processing services. Welcome to contact with us.

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