Recently, public information from the State Intellectual Property Office shows that the patent for “an elastic mandrel assembly based on servo electric cylinder drive” applied by Qinchuan Machine Tool Group Co., Ltd., a leading enterprise in the field of high-end equipment manufacturing in China, has officially been authorized as a utility model. The authorization announcement date is June 26, 2026.
According to the patent summary, the elastic mandrel assembly adopts a modular concentric positioning design, which firmly connects the mandrel holder and the elastic mandrel into one body. Multiple micro servo electric cylinders are evenly distributed on the lower conical surface of the mandrel holder. The multiple servo electric cylinders can perform adjustment actions synchronously. By tightening the lower conical surface of the elastic mandrel at the end, the elastic mandrel mouth edge is deformed, and the core mold is finally modified.
This technology breaks through the technical bottleneck of traditional core mold modification, and can realize wave-free, fast, high-precision, online dynamic modification adjustment of the elastic core mold. At the same time, the overall structure is compact, economical and practical, and has extremely high promotion and application value. It will greatly improve the production efficiency and product accuracy of hollow molding and other related processing links, and will have a positive pulling effect on the technological upgrading of multiple downstream industries such as plastic processing and high-end parts molding.
As a domestic leader in the field of high-end machine tools and complex cutting tools, Qinchuan Machine Tool has the advantage of developing the entire industry chain. Its core business covers multiple categories such as high-end machine tools, core components, and precision tools. Related products are widely used in high-end manufacturing fields such as aerospace, new energy, and automobile manufacturing.
In 2025, the company’s operating income will reach 4.09 billion yuan, ranking first among 19 comparable companies in the same industry in China, far exceeding the industry average revenue level of 1.538 billion yuan, and leading the second place by more than 3.7 billion yuan.
From the perspective of business structure, the machine tool business contributed 2.064 billion yuan in revenue, accounting for 50.48% of the total revenue, the parts business accounted for 35.99%, and the tool business accounted for 9.05%. The diversified and focused business layout provided solid support for the company’s stable development.
In addition to the elastic mandrel assembly patent authorized this time, Qinchuan Machine Tool’s recent research and development results have been intensively implemented. In the past year, more than 40 patents have entered the public and authorized stages, covering multiple core fields such as composite processing technology, high-precision turntable technology, gear processing technology, and material testing technology. It covers multiple types of invention patents, utility model patents, and design patents, which fully reflects the company’s strong technological research and development capabilities.
At present, Qinchuan Machine Tool’s high-end machine tool products are already competitive in the global market, and continued breakthroughs in core technologies will also provide core support for Chinese machine tool products to go overseas and seize the global high-end equipment market share.
