It is one of the main parts in the automatic tool changing device. According to the number of tools in stock and the way to get tools, the tool library can be designed into different types according to different machine tools.

Precision carving machine tool library is mainly used for small parts, mold processing, high cost performance, processing speed, curved surface, surface finish is good, mobile phone/clock/glasses/computer/mold and other industries, suitable for processing small steel/aluminum/copper/non-metallic acrylic. Along with the market development in recent years, carved machine widely used in the parts processing industry, as well as for carved machine tool change speed put forward higher requirements, so the demand for knife library carved machine is also more and more big, the market generally have disc knife library, straight row of knife library, umbrella knife library, each have advantages and disadvantages, based on their machine tools design and trip to choose suitable knife library, which give expulsion-typely knife library with its simple structure, lower cost, speed is the most popular with the customers, umbrella and hat type is applied more widely.