CNC machine tool spindle is one of the core components of CNC machine tools. Its main function is to rotate machine tool tools and workpieces to meet processing requirements. The spindle structure of CNC machine tools generally consists of motors, bearings, spindle heads, tool magazines, cutting tools, etc.

1. Motor

The motor is the power source of the CNC machine tool spindle. The greater the rotational power it outputs, the more significant the improvement in the working efficiency of the entire machine tool will be. At present, the mainstream CNC machine tool spindle motors commonly include AC servo motors, synchronous motors and asynchronous motors, among which AC servo motors are widely used.

2. Bearings

Bearings are an important part of the spindle of CNC machine tools. Their main function is to support the spindle and reduce its rotational friction. There are two main types of bearings currently used on the market: ball bearings and roller bearings. Ball bearings are more widely used due to their excellent properties such as wear resistance, high temperature resistance, and high load-bearing capacity, which can ensure the high-speed and high-load working conditions of machine tools.

3. Spindle head

The spindle head is a sleeve-shaped component fixed on the spindle, which carries the tool for rotation. Due to its special structure, it is usually clamped by a pallet, and the force is transmitted through the torque and traction force to achieve high-precision machining operations of the machine tool.

4. Tool magazine

The tool magazine is a commonly used tool storage unit on the spindle of CNC machine tools. It can store a variety of different tools. Through mechanisms such as tool changers, different tools can be quickly replaced to improve production efficiency. At present, the common tool magazine forms on the market include linear tool magazine, arc tool magazine, plate tool magazine and other common forms.

5. Tools

Tools are important accessories for CNC machine tool spindles to complete cutting processing. Their quality directly affects processing efficiency and finished product accuracy. Choose different tools according to different processing requirements. Common types of tools currently on the market include milling cutters, drill bits, reamers, turning tools, etc.

To sum up, the CNC machine tool spindle structure is a complex system that contains many different components, each of which is very important and indispensable. The correct selection and use of CNC machine tool spindles can not only improve processing efficiency, but also greatly reduce cutting costs and solve a series of problems in production. For machine tool operators, understanding the structure of the CNC machine tool spindle and being familiar with its working principles are important guarantees for the normal operation of the machine tool.