The key points of selecting CNC rotary table tools include: 1. Processing material: Select the appropriate tool material and type according to the hardness, strength and cutting performance of the material. 2. Cutting type: Select the appropriate cutting type according to the processing requirements, such as milling, drilling, boring, etc. 3. Cutting parameters: Determine the parameters such as cutting speed, feed speed, cutting depth, etc. according to the processing conditions, and then select the corresponding tool. 4. Wear resistance: Select tools with good wear resistance to improve processing efficiency and tool life. 5. Stability: Select tools with strength and rigidity to ensure a stable cutting process and processing accuracy. 6. Tool geometry: Select tools that meet the processing requirements, considering factors such as edge angle, top angle, and edge shape. 7. Economy and substitutability: Consider the price, life and substitutability of the tool, and select a tool with a high cost performance. Taking the above factors into consideration, selecting suitable CNC rotary table tools can improve processing efficiency, accuracy and economic benefits.