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Analysis of Mechanical Manufacturing and precision machining Technology


After several years of CNC machining practice of Desheng, we have concluded some feasible ways to improve CNC machining efficiency. In order to effectively study modern mechanical manufacturing and precision machining technology, based on work practice, it is elaborated in depth, aiming to lay a good foundation for the improvement of mechanical manufacturing level through further research.

 1 The main features of modern machinery manufacturing and precision machining technology

 1.1 First is relevance. For the modern machinery manufacturing industry, not only the production, design, research and processing of the finished products, but also the sales and after-sales service, there is also a certain embodiment. For the process of machining and manufacturing, it needs to be advanced, and all the contents need to be related. If there is a problem in one link, it will inevitably affect other links, and eventually lead to problems in the overall effect. It can be seen that the mechanical manufacturing industry has a close relationship with precision machining. To ensure the smooth flow of the overall process, it is necessary to have a detailed understanding of the related things in order to achieve the desired improvement effect.

 1.2 Systematic features. Analysis of the overall characteristics of the machinery manufacturing industry shows that modern machinery manufacturing is a systematic project. In addition to simply completing the manufacture of products, it also needs to use computer information technology, modern sensing technology, automation technology and other related technical content to ensure various Technology can be integrated to achieve a holistic improvement in manufacturing technology. In addition to the application in the development, design and sales of products, each technology has its own characteristics, so it should be distinguished when applying.

 1.3 Global characteristics. With the increasing pressure of competition in the global market, mechanical manufacturing processes and precision machining technologies are gradually becoming more global. In the context of modern environment, between the machinery manufacturing industry, we are using more and more advanced technologies to gain more market share. Through the core competition among various units, the mechanical manufacturing technology has been continuously upgraded and improved, and the The products are more sophisticated. On the premise of improving the overall precision of mechanical parts, the current machinery manufacturing industry has gradually become the world's leading level.

 2 Modern machinery manufacturing technology

 2.1 Gas shielded welding process

 The gas shielded welding process is a widely used welding technology in the mechanical manufacturing industry. By using a heat source to weld a specific location and using carbon dioxide as a protector, a special arc is formed between the wire and the weldment to melt the metal. The gas shielded welding process has the following advantages: First, the overall operation process is simple, and the arc welding method is adopted, so that the final welding state can be directly observed, and the position selection and the method change are facilitated. Second, the carbon dioxide is passed. Gas protection, arc, bath and air can be separated before avoiding the effects of harmful gases on the welding process. When welding, the main heat can be compressed to a point, the welding speed and welding quality are improved, and the thin plate welding requirements are met. Third, the overall cost of the method is low. Although a special gas protection method is adopted, the overall cost is not significantly increased. Fourth, the production efficiency is high. Compared with the traditional manual welding method, the carbon dioxide protection welding process can speed up the melting speed of the welding position during the thick plate welding, so that the welding can be quickly completed, and the welding slag does not need to be cleaned, so that the overall welding efficiency is improved.

 2.2 resistance welding process

 By placing the welded object on both ends of the positive and negative electrodes, the current is passed through the surface of the welded object, and under the action of the electric resistance, the welded spot rapidly generates a large amount of heat, thereby melting and completing the welding. The main features and advantages of this method are that a large number of welding tasks can be completed in a short time, and the welding quality can be ensured, the overall operation process can be optimized, and the efficiency can be improved. At the same time, the welding technology can be better applied to the welding field of modern equipment such as automobiles and home appliances, and is widely used. Its disadvantage is that the overall cost of the welding process is high, and the maintenance cost is large in the later stage. Once the problem occurs, the detection process is difficult.

 2.3 submerged arc welding process

 Submerged arc welding can be divided into automatic welding and semi-automatic welding by burning the nodes under the welder layer. The advantage of semi-automatic welding is the ability to guarantee the overall quality of the weld. In the actual welding process, the welding wire is input by mechanical means, and the movement of the arc is completed by human operation. The advantage of this method is that it can complete high-efficiency welding tasks, and can control the length of the welding wire. With a shorter welding wire, large-area welding can be completed at a lower cost. In addition, the welder and slag used in the welding process have a heat insulating effect, the heat loss in the welding process is lower, and the work efficiency is improved. The welding seam does not have obvious welding slag, and the adjustment of different welding parameters can be completed under the premise of insulating the air. The advantage of this method is that the welding technician's technical level is low, and only the basic operation is required to complete the welding task. Automated welding replaces traditional human welding, reducing labor and reducing overall cost.

 2.4 Stud welding process

 By contacting the stud with the contact surface, the welding is completed by heating of the arc, which is called stud welding. There are a variety of welding methods for stud welding. The most common ones are energy storage and arcing. The two methods need to be selected according to the actual welding conditions. The common point is that they are all single-sided welding, and it is not necessary to complete the artificial drilling and drilling, and the process flow is simple.

 2.5 Virtual Manufacturing Technology

 In the mechanical manufacturing process, it is necessary to apply to the welding process, combined with modern mechanical equipment, and use computer information technology to complete the design and packaging of the product. Mechanical products are characterized by the fact that, after actual modeling and simulation, the production can be produced according to the order requirements, which is in line with the manufacturing process of the virtual manufacturing technology. The virtual manufacturing process can simulate the products that need to be manufactured. When designing, manufacturing, assembling and inspecting the products, in order to reduce the production cost, it is necessary to use the virtual manufacturing method to continuously optimize the overall manufacturing process and avoid production. Material waste, etc. occur during the process. The advantage of virtual manufacturing is that it can simulate the overall manufacturing process in advance, so that the mechanical manufacturing enterprises have higher market competitiveness. By simulating the manufacturing process of different products, problems and defects in manufacturing can be discovered in time, repaired in time, and solutions can be proposed to further optimize the manufacturing process to ensure higher quality products and improved overall manufacturing efficiency.

 2.6 precision machining Technology

 2.6.1 Ultra-precision cutting technology

 In the field of mechanical manufacturing, cutting is everywhere. In order to complete the manufacture of the product, it is necessary to cut irregular materials to meet the size requirements of the product. In the cutting process, you need to first understand the cutting ability of the tool. Then, according to the requirements, the blank material is cut, and the cutting precision and cutting method are guaranteed at this time. The process manufacturing process for mechanical parts requires the use of ultra-precision cutting technology to ensure a higher precision product. The traditional cutting technology can not achieve the cutting precision and speed of ultra-precision cutting technology, so the production efficiency is difficult to improve, which is another major advantage of ultra-precision cutting technology.

 2.6.2 Mold manufacturing technology

 The continuous development and progress of the machinery industry has promoted the core competitiveness of enterprises. In order to occupy a larger market, companies are striving to obtain higher mold manufacturing technologies based on the premise of improving product development efficiency and production efficiency, thereby improving the existing process. After changing the original product processing technology and size, the use of more advanced production processes and production methods, the same batch of parts can be completed in a short time, the overall efficiency is improved. On the other hand, China has adopted a high-precision manufacturing process to make the mold manufacturing process level up to the micron level. According to the processing characteristics of different products, in order to improve the precision of existing processing, the processing technology is continuously optimized, so that the production, processing and manufacturing processes of the products are faster, and the overall precision and operation efficiency are guaranteed.

 2.6.3 Nanotechnology

 As the process has become more mature, the processing methods and processing processes of the products have changed significantly. In order to meet the quality and functional requirements of the products, and to reduce the material waste in the production process, it is necessary to adjust the mechanical processing technology of the products. The emergence of nanotechnology is tantamount to a qualitative leap in the processing flow. Nanotechnology can accurately store information and data, and can precisely control the data of the mechanical manufacturing process, such as the large-scale production and manufacture of circuit silicon wafers, and the manufacturing process of laser nuclear fusion mirrors. The advantage of nanotechnology is that it can realize the processing and manufacturing of products in a smaller volume, so that the products can obtain higher storage capacity under the same unit, reduce the volume and increase the storage capacity, and promote the mechanical manufacturing industry to high, fine and professional development of the field.


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