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The Configuration Of The Main Drive For CNC Machining

The Configuration Of The Main Drive For CNC Machining

The numerical control processing adopts the main drive variable speed system of motor speed regulation, which usually has the following three configuration methods, as shown in Figure 62. CNC machining CNC is also known as computer gong, CNCCH or CNC machine tool. It is actually a name from Hong Kong, which greatly reduces the number of tooling.

CNC machining of parts with complex shapes does not require complicated tooling. CNC machining is a new type of processing technology and the main work It is to compile the processing program, that is, to convert the original manual to computer programming.

If you want to change the shape and size of the part, you only need to modify the part processing program, which is suitable for new product development and modification. In numerical control processing, the control system sends out instructions to make the cutter perform various movements that meet the requirements, and expresses the processing of technical requirements and processing requirements such as the shape and size of the workpiece in the form of numbers and letters.

It generally refers to the process of processing parts on CNC machine tools. In order to improve production automation, shorten programming time and reduce CNC machining costs, a series of advanced CNC machining technologies have also been developed and used in the aerospace industry.

1. Transmission mode of variable speed gear

The spindle motor is shifted by two gears, so that the spindle can obtain two speed series of low speed and high speed, making it a stepless stepless speed regulation. After speed reduction through gear transmission, the output torque and speed adjustment range are expanded, especially the speed adjustment range when the spindle constant power (referring to the work done by the object in unit time) is output to meet the spindle output torque characteristics and power Characteristics and speed range requirements. This type of configuration is used more in large and medium-sized CNC machine tools (attribute: automated machine tools).

2. Belt transmission mode

The spindle motor transmits its motion to the spindle through a toothed synchronous belt at a fixed ratio. This configuration method has stable transmission, simple structure, and convenient installation and debugging. It is mainly used on small CNC machine tools (attribute: automatic machine tools), but it is only suitable for spindles with low torque characteristics.

3. Direct drive mode of speed regulating motor

There are two types of this configuration. In numerical control processing, the control system sends out instructions to make the cutter perform various movements that meet the requirements, and expresses the processing of technical requirements and processing requirements such as the shape and size of the workpiece in the form of numbers and letters. It generally refers to the process of processing parts on CNC machine tools. In order to improve production automation, shorten programming time and reduce CNC machining costs, a series of advanced CNC machining technologies have also been developed and used in the aerospace industry. The output shaft of the spindle motor is directly connected to the spindle through a precision coupling. Its advantages are compact structure and high transmission efficiency. However, the change in spindle speed and torque output are completely consistent with the output characteristics of the motor, so it is subject to certain limit. As the performance of the spindle motor improves, this method will be used more and more. The other is shown in Figure 62d). The main shaft is integrated with the rotor of the motor, which is called the built-in motor shaft. The advantage of this method is that the spindle component has a more compact structure, high rigidity, light weight, and low inertia, which can increase the response frequency of starting and stopping, which is beneficial to control vibration and noise. Big

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