Dongguan CNC processing plant in the machinery industry, how to ensure the high precision of the workpiece, processing costs and other substantive issues, has been engaged in the research of the mechanical industry personnel, which in the design of the fixture should consider the above problems, efficient fixture is the guarantee of high precision of the workpiece, how to make the fixture more efficient, more economic, this is the urgent need to solve the industry.
With the development of society and the continuous improvement of science and technology, various high-tech technologies have gradually penetrated into various industries. How to make use of these high technologies to serve human beings and how to make full use of these high technologies in the machinery industry also requires the continuous efforts and innovation of the personnel in the machinery industry. With the development of science and technology, and the needs of social market, fixture design is gradually developing to the direction of flexible manufacturing system. So far, the fixture is still one of the four indispensable tools in the manufacturing of mechanical and electrical products. The tool itself has been highly standardized, and users only need to select and purchase according to the variety and specification. Mold and fixture are closely related to products. Once the products change, they need to be remade. They are usually special tools. Mold has developed into an independent industry; Fixture at home and abroad is also gradually forming a small industry attached to the machine tool industry or independent. Modular fixture not only has the modern advanced design ideas of standardization, modularization and combination, but also conforms to the principle of saving resources, which is more suitable for the environmental protection principle of green manufacturing. So it is an important development direction unit of fixture technology in the future.
Machine tool fixture usually refers to the device used to clamp the workpiece. As for the device used to clamp various cutting tools, it is generally called "auxiliary tool". Auxiliary tools are sometimes broadly included in the scope of machine tool fixture. According to the application scope of machine tool fixture, it can be divided into general fixture, special fixture and adjustable fixture.
The general fixture of Dongguan CNC processing plant is attached to common machine tools, such as chuck on lathe, rotary table on milling machine, dividing head, top seat, etc. They are all standardized and have a certain versatility. They can be used to install various workpieces within a certain shape and size range without special adjustment. However, in the actual production, the general fixture is often unable to meet the needs of various parts processing; Or because of the low productivity, the general fixture must be improved properly; Or due to the shape of the workpiece, processing requirements, etc., a special fixture must be designed and manufactured to meet the actual needs of production.
Fixture is specially designed and manufactured to meet the processing requirements of a certain process of a workpiece. Its functions mainly include the following aspects:
1. To ensure the machined surface of the workpiece mainly includes two parts: the machine time needed to process the workpiece and the auxiliary time needed to load and unload the workpiece.
2. After the special fixture is used in Dongguan CNC processing plant, the work of installing workpiece and changing station can be greatly simplified, and there is no need to draw line and align, which shortens the auxiliary time of the process and saves the process of drawing line, so as to improve the labor productivity, So that the machine time of several workpieces processed at the same time will be the same as that of one workpiece. By using the rotary multi position continuous machining fixture, one workpiece can be machined and other workpieces can be loaded and unloaded at the same time, so that the auxiliary time coincides with the mobile time. In a word, with the adoption and further improvement of the special fixture, the process time can be effectively shortened to meet the needs of the continuous development of production.
3. The use of special fixture in Dongguan CNC processing plant can also expand the process range of the machine tool. For example, after adding a boring die fixture to an ordinary lathe, it can replace the boring machine; After the special fixture is installed, the formed surface can be turned to give full play to the role of the general machine tool.
4. Reduce labor intensity and ensure safe production. According to the needs of production, the use of some pneumatic, hydraulic or other mechanized, high degree of automation of the special fixture, to reduce the labor intensity of workers, ensure production safety and product stability and high yield has a great role. When processing large workpieces, such as processing the screw holes on the upper and lower sides of the lathe bed, it is necessary to turn the workpieces on the lathe bed several times for processing, which is labor-intensive and unsafe. After using the electric rotary drilling machine, it can improve the production efficiency, reduce the labor intensity and ensure the production safety.