With the development of electric spindle manufacturing technology, new challenges and requirements have been put forward for spindle precision machining and machining efficiency, and automatic tool changing technology has emerged. Due to its fast tool changing speed and high efficiency, with the increase of labor costs, it has been favored by mechanical processing users. The high-speed automatic tool changing device (ATC) has become an important technical content of high-speed machining centers and an important indicator of high-level machining centers.

Improvement of Automatic Tool Changing Technology for Electric Spindle

1. Ensure the accuracy of tool replacement.

When setting up a tool changing device in a high-speed machining center, the first step is to increase the tool changing speed based on accurate and reliable tool changing actions. Especially ATC, which has a relatively high failure rate among the functional components of machining centers, is particularly important. Secondly, ATC should be selected based on the application target and cost-effectiveness. In applications where tool change time has a significant impact on the production process, it is necessary to increase the tool change speed as much as possible.

2. Choose ATC based on the application object and performance price ratio.

When the tool change time has a significant impact on the production process, the tool change speed should be increased as much as possible. On assembly lines such as automobiles, the time and frequency of tool changes should be included in the production rhythm of the workpiece. And in other places, such as when processing mold cavities, the selection of tool changing speed can also be relaxed.

Automatic tool change of electric spindle is a machining process involving multiple cutting tools. Through automatic tool change, auxiliary machining time can be reduced. The tool changing device of the cutting center mainly consists of a tool magazine and a tool changing mechanism. Commonly used tool changing mechanisms include mechanical arms and non mechanical arms, and the types and placement positions of tool magazines are also different. In order to meet the needs of high-speed motion, the structure of high-speed machining centers is different from traditional machining centers. Its main feature is the movement and feed of cutting tools, and reducing the mass of moving parts has become the mainstream of high-speed machining center design. Therefore, when designing tool changing devices, the new structural characteristics of high-speed machine tools should be considered.