Expert explanation: the influence of machining technology on the machining accuracy of parts
Release Time:
2023-05-15
With the use of CNC machine tools, China's processing and manufacturing industry has developed rapidly, and the requirements for the number, precision and efficiency of parts processing are getting higher and higher, and the demand for precision parts in various fields is also increasing
With the use of CNC machine tools, China's processing and manufacturing industry has developed rapidly, and the requirements for the number, precision and efficiency of parts processing are getting higher and higher, and the demand for precision parts in various fields is also increasing.
Ultra-precision machining mainly includes three areas
1. Ultra-precision cutting processing such as ultra-precision cutting of diamond tools, can process various mirrors, which has successfully solved the processing of large parabolic mirrors for laser nuclear fusion systems and celestial telescopes;
2. Ultra-precision grinding and grinding processing, such as coating surface processing of high-density hard disks and processing of large-scale integrated circuit substrates;
3. Ultra-precision special processing, such as the graphics on large-scale integrated circuit chips are processed by electron beam and ion beam etching, and the line width can reach 0.1μm; if processed by scanning code tunneling electron microscope, the line width can reach 2~5nm.
Equipment requirements for ultra-precision machining
1. High precision; Including static accuracy and dynamic accuracy, the main performance indicators are geometric accuracy, positioning accuracy and repeated positioning accuracy, resolution, etc., such as spindle rotation progress, guide rail motion accuracy, indexing accuracy, etc.
2. High stiffness; Including high static stiffness and dynamic stiffness, in addition to its own stiffness, attention should also be paid to contact stiffness, as well as the stiffness of the process system composed of workpieces, machine tools, tools and furniture;
3. High stability; After transportation and storage, the equipment should be able to maintain accuracy, anti-infection and stable work for a long time when used in the specified working environment; The equipment should have good wear resistance, shock resistance, etc.
4. High automation, in order to ensure the quality of processing and reduce the influence of factors, the processing equipment mostly adopts numerical control system to achieve automation;
The influence of machining process on the machining accuracy of parts
1. Influencing factors Intrinsic factors
are important influencing factors of machining technology; The machining system will have a certain geometric accuracy error in the production process, and the machinery will produce certain errors due to improper operation of the staff and non-standard technology during the installation process;
2. Factors influencing force Some problems will occur during the
operation of the machining process, generally speaking, it is mainly the problem of system force deformation; The position of the system changes, its shape will fluctuate, resulting in changes, it is difficult to ensure the smooth operation of the system, specifically, the force factors are mainly reflected in two aspects, one of which the system has this strong operating ability during operation.
3. Thermal change influencing factors There are three main types of thermal influencing factors, one is tool
thermal change; In the process of cutting and cutting parts, it is necessary to group certain tools and use tools; In order to make the parts meet the production standards, the parts need to be repeatedly cut; In this process, friction is generated that is converted into heat.
Founded in 2018, the company is located in the high-tech zone of Jianghai District, Jiangmen City, with a plant area of about 15,000 square meters. It specializes in carbon steel and stainless steel welding, medium and large precision machining, and sheet metal production.
Jiangmen Shunhong Equipment Manufacturing Co., Ltd.
Add: Building 3, No. 16, Keyuan Road, Jianghai District, Jiangmen, Guangdong, China
Fax: +86-750-3256199