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.