Composition of automatic tool change device of machining center

The machining center is developed from the basic CNC milling machine. It integrates all the features and functions of the CNC milling machine. The only difference from the CNC milling machine is that the machining center has an automatic tool change device, which can realize the automatic tool change function during processing. However, the CNC milling machine has no automatic tool change device and cannot realize the automatic tool change function, which is the only difference between the CNC milling machine and the machining center. Today, I will introduce the automatic tool change device.
Composition of automatic tool change device of machining center
The automatic tool change device of the machining center is composed of a tool magazine, a manipulator, a drive mechanism and other components. The tool magazine is used to store the tools needed for machining. There are many types of tool magazine, which are mainly classified according to the shape. There are many types of tool magazine, such as bamboo hat type tool magazine, disc type tool magazine and chain type tool magazine. The capacity of these tool magazines is from several to hundreds of tools. There are two kinds of tool magazine commonly used by machining centers in the market, the bamboo hat type tool magazine and the disc type tool magazine, while the chain type tool magazine is not used by many manufacturers because of its high price. Next, let's introduce the tool change method.
Tool change mode of bamboo hat type tool magazine
The tool change method of the bamboo hat type tool magazine is relatively simple. This type of tool magazine has no mechanical arm, so it does not need to use the mechanical arm to complete the tool change. The tool change mode of the tool magazine is as follows: the tool magazine moves to the spindle to realize tool change. This type has the advantages of high cost performance, convenient maintenance and simple structure, while the disadvantage is the slow tool change speed.
Tool change mode of disc tool magazine
The tool change mode of the disc type tool magazine is relatively complex, which is mainly completed by the manipulator. The manipulator takes out the tool from the tool magazine and rotates it 180 ° into the spindle to complete the tool change. This kind of tool magazine has the advantages of fast tool change, but its disadvantages are complex structure, inconvenient maintenance and high failure rate.
Although the tool change mode, tool selection mode and tool structure of these tool libraries are different, they are all controlled by the numerical control system, and the selection and exchange of tools are realized by the motor, air pressure or hydraulic pressure and manipulator.