Overall solution for Machine tool processing deformation
发布时间：2020/03/26
As we all know, China's machine tool industry has developed significantly in the past decade, with more than 4000 enterprises producing machine tools and tools. In the past 50 years, the precision of machine tool has been increased 100 times, and it has entered the era of submicron and nanometer ultra precision machining. High precision and precision retention are the primary indexes of machine tool quality.
In the process of casting and machining of large CNC machine bed, due to the uneven heat or stress, there will be different degrees of residual stress in the bed. The existence of residual stress has a great influence on the dimensional stability, rigidity, strength and machining performance of machine tool bed, as well as the assembly and normal use of machine tool.
Since its establishment, Xiangbo technology has strived to provide customers with continuous solutions to residual stress problems, with cases involving weapons, aerospace, aviation, wind power, machine tools and other fields. The company has jointly established a joint laboratory with Beijing University of Aeronautics and Astronautics and Shenyang engine design and Research Institute. It not only has the top-notch residual stress detection technology, but also has developed spectrum harmonic aging, modal broadband aging and other technologies in the field of residual stress and deformation control, providing the enterprise with the overall solution of residual stress and deformation control.
Case presentation:
Tianshui Spark Machine Tool Co., Ltd
Bed casting 8.5t material: HT250
Aging workpiece: machine bed, casting
Application background: one of the nine heavy horizontal lathe manufacturers in the world, China's leader in the production of large rotary machine tools.
Technical achievements:
(1) The straightness index of bed process is within 0.11mm. 0.07mm after spectrum harmonic aging;
(2) It can effectively guarantee the product quality by substituting the post casting heat aging process;
(3) Obviously shorten the production cycle.
Kunming Machine Tool Co., Ltd
Column casting 51T
Aging workpiece: beam, column, bed, workbench and other castings
Application background: China's famous large-scale precision machine tool manufacturing enterprises, the product brand "Kunji" brand is a national famous brand.
Technical achievements:
(1) It can replace casting and heat aging process after machining to ensure product quality;
(2) Solve the problem of large workpieces unable to enter the furnace
(3) Shorten the production cycle;
Tianjin Sanda Foundry Co., Ltd
(4) Energy saving and emission reduction.
Tianjin Sanda Foundry Co., Ltd
Bed casting
Aging workpiece: Haas machine bed casting
Application background: due to the influence of residual stress, the workpiece can not meet the delivery standard, so the enterprise adopts heat aging and other methods for processing, which is expensive.
Technical achievements:
(1) Compared with the original thermal aging, it is more environmentally friendly and saves a huge amount of aging costs, about 4 million yuan;
(2) The lead time has been greatly shortened.
Qizhong numerical control equipment Co., Ltd
Worktable 90t material: HT250
Aging workpieces: machine bed, crossbeam, slide block, worktable casting, ram, forging
Application background: Qiqihar No.1 Machine Tool Factory, one of the top 10 metal cutting machine tool enterprises in China. In 2007, it became a wholly-owned subsidiary of Zhejiang Tianma Bearing Co., Ltd.
Technical achievements:
(1) Replace the heat aging process after machining to ensure product quality;
(2) It solves the problem that large workpieces cannot enter the furnace;
(3) Improve production efficiency and shorten delivery cycle;
(4) Energy saving and emission reduction.
Qiqihar Second Machine Tool Group Co., Ltd
Sliding seat
Aging workpieces: machine bed, column, slide seat, casting, slide block, weldment
Application background: China's famous production base of heavy machine tools and forging equipment is also the world's largest CNC Floor milling and boring machine production base.
Technical achievements:
(1) The technology of spectrum harmonic aging is fixed in the first aging of machine tool bed casting and the second aging of slide welding piece, which solves the problem of dimensional accuracy stability;
(2) Production efficiency has been greatly improved.
