In the installation process of large crane, the flatness of crane flange will change The conventional practice is to machine the crane flange plane after the assembly and welding of the crane base assembly, so as to ensure that the flatness of the crane flange meets the requirements of the design drawing

Generally, the designed products cannot be directly mass-produced Once they have defects, they will be scrapped, which wastes manpower, material resources and time The prototype is the necessary step to verify the feasibility of the design in the product development process It is a direct and effective way to find out the defects,

In the development and application of thread rolling machining technology, the advantages of high machining accuracy, stable quality, and high production efficiency of this technology are used in the development and application It is considered to have high reliability in special wire machining equipment

As a vital component of a car, the wheel has a direct impact on the driving and safety performance of the car With the continuous improvement of the degree of mechanization in my country, machining methods have been basically used in the production and processing of automobile wheels,