CNC machining: an important technology that changes the precision parts industry
CNC machining is the basic machining process of machine tools. In the machine tool industry, CNC machining mainly includes CNC lathes, CNC milling machines, CNC boring and milling machines, etc., and parts include machining bits, etc. These machine tools have been widely used in many fields of the precision parts machinery industry. Square Deal Machining is a leader in the field of precision parts manufacturing, providing a full range of manufacturing, machining and welding services for some companies.
CNC is an advanced technology developed on the basis of machine tools. Its basic idea is to construct, combine and improve CNC milling machines to better adapt to the development requirements of mechanical processing and improve the machining accuracy and quality of parts.
Under the current production conditions in our country, CNC can transform complex workpieces from traditional manual production to modern production technologies such as automation and digitization. It has many advantages such as improving production capacity, shortening construction period, reducing costs, simplifying processes, etc.; improving production efficiency and quality; providing strong support for the development of machinery manufacturing industry, especially precision parts industry.
1.Indispensable CNC machining services are suitable for precision parts industry
CNC machining of precision parts plays an irreplaceable role in the development of new products. Generally speaking, customized precision parts of different complexity can be processed by programming. Modifying and updating the design only requires changing the lathe program, which can greatly improve and shorten the product development cycle. The degree of automation of precision parts processing is sufficient, which greatly reduces the physical labor intensity of workers. Workers do not need to control the process like ordinary lathes during the processing, and they mainly observe and supervise the lathes. However, the corresponding CNC machining has a higher technical content than ordinary lathes, so it requires higher mental labor than ordinary lathes.
In CNC machining, its process, if simply understood, refers to changing the shape, size, orientation and properties of the processing object, and then turning it into a semi-finished product or finished product, which is called a process. Therefore, CNC machining service can be seen from its definition that it is an important part of the production process. Its specific composition includes casting, casting, stamping, welding, installation, etc. The machining process is the basic unit of the process. If you want to form a process, you can’t change the processing object, processing equipment, etc., but you should complete its contents in sequence, so that it can be formed correctly. Otherwise, it can’t be called a process.
1) Characteristics of CNC machining
First, has good precision and stability, and low processing cost, but it also has high requirements for precision, and higher requirements for precision. For CNC tool components used in mechanical processing, such as blades, machine tools need to be replaced. . Secondly, CNC machining has the characteristics of high precision and strict precision requirements, and has strict requirements for tools, fixtures, and procedures. In addition, CNC machining precision parts also have the characteristics of small processing volume and light weight.
Compared with CNC lathes, CNC cutting can reduce the energy consumption of machine tool operation and the number of spindles and workpieces, saving the labor cost and labor intensity of operators. According to relevant information, with the continuous advancement of machine tool technology and the continuous development of modern process technology, CNC machining has gradually developed from simple initial machining to automated intelligent machining, and the machining process is generally completed by CNC equipment. Using traditional equipment to produce parts will greatly shorten the construction period and increase production costs and labor intensity.
Due to the use of a series of advanced technologies such as machining parameters and procedures, the accuracy of parts is usually very high. Production efficiency has also been improved, because advanced machining equipment has greatly reduced the resources required in the production process, so that each part can be directly used from beginning to end. From this point of view, CNC-based equipment has been increasingly accepted and used by people.
2) Development status of CNC machining
The research and development of CNC lathes and CNC milling machines in my country started late, and there is still a certain gap in the research and development level compared with foreign countries. However, due to the advantages of my country’s machine tool manufacturing enterprises in CNC processing technology, in recent years, many enterprises have begun to develop and produce a new generation of CNC processing equipment represented by “SIMS”; computer-aided systems and control technologies have also been applied to machine tools for programming and automatic processing of complex precision parts.
These computer-aided systems have been applied, developed and popularized on CNC lathes. However, developed countries led by my country have invested in and researched CNC lathes, CNC milling machines, CNC boring and milling machines and other processing equipment and corresponding software. The performance and precision of many products are far behind the advanced level of foreign countries, which seriously restricts the development of complex parts in my country. CNC processing technology has made progress. With the continuous progress and development of science and technology. There will be more new results in the research of CNC manufacturing technology.
3) Future trends
CNC processing technology is a highly complex system engineering and the development direction of the entire machinery manufacturing industry. With the continuous development of CNC machine tool technology, its processing accuracy and quality will be greatly improved; in the future, the continuous improvement of CNC processing technology will be increasingly applied to CNC processing. Intermediate. For a long time in the future, the development direction of CNC lathes will be towards micro-machining, multi-functional CNC machine tools, and CNC lathes.
As my country’s economic development level enters a new era, the level of science and technology continues to improve, as well as the huge driving force of science and technology on my country’s social development and the whole society attaches more importance to CNC processing technology. CNC processing production equipment will develop in the direction of automation and high quality. As a result, China has a greater influence in the international precision parts market. It will become one of the key areas of concern in the machine tool industry for a long time. This article is contributed by the user of the webmaster’s home. Reprinting is strictly prohibited without the consent of the webmaster’s home.
2.What is the future of CNC processing manufacturers today?
1) CNC lathe
CNC lathe is the most mature, practical and cost-effective processing equipment in the CNC industry. With the improvement of equipment performance, the new equipment can be processed according to the production of workpieces of different sizes and shapes. Compared with traditional processing methods, CNC processing methods have higher production efficiency, lower production costs, and better quality control. When using CNC lathes, workpieces must be cut into a series of tiny sizes, such as small diameters, holes, hole patterns, or apertures. For workpieces with larger and smaller diameters, machining must be performed in a way that the tool moves throughout the machining process to achieve both finishing and non-finishing effects.
Therefore, CNC machining manufacturers require large quantities of small diameters, hole types or apertures. In addition, the ability to process complex-shaped parts must also be considered.
In addition, high-precision, small-sized workpieces require fast tool movement to obtain sufficient space to finish the workpiece surface. Since the types of tools used in CNC lathes are mostly small, small hole sizes, or small hole types or hole shapes, the number of tools used is relatively small.
2) Mold processing
If complex machining is not required to complete the mold design, then the mold is the most basic link in manufacturing. The manufacture of molds involves a variety of molds, such as the manufacture of mold forming parts and stamping parts, and the forming of certain mold parts. Due to the complexity of these molds, three to four different types of machine tools are usually required to process the mold. For example, Kawssen produces machine tool lathes (SMCV). It has been operating successfully for decades. Kassen has manufactured a high-speed CNC machine tool that can process parts at almost the same speed and number of tools. At the same time, Kawssen produces large-scale high-speed CNC machines (JHMCV) capable of processing complex molds.
3) Molding
The company now has molding processing equipment (SMCV). CNC processing manufacturers can process metal workpieces such as titanium and titanium alloy thin-walled workpieces or other high-strength parts. The equipment uses the technology of Mitsubishi Corporation of Japan. The technology has the characteristics of high density, high strength and low cost, so it is very popular in the global manufacturing industry. In addition, the advanced automated molding and processing (ASC) system enables the automation of the part manufacturing process. When the workpiece is processed (not required if a mold is used), an instruction will be issued inside the equipment to automatically feed the part into the mold for curing. As needed, the equipment automatically measures whether the mold has been cured and controls the steps accordingly.
4) Heat treatment processing
Heat treatment processing processes the workpiece at low temperature, which is conducive to reducing part deformation and improving performance. Therefore, it is particularly suitable for high-strength and high-plasticity parts. By heating, cooling, heating, the surface hardness of the part is increased, the surface roughness is reduced, or no machining is required. At the same time, quenching and tempering also help prevent carbides and oxides in the metal from adversely affecting the surface roughness and performance of the workpiece. Therefore, heat treatment processing has always occupied a place in CNC machining. But heat treatment will also cause a series of problems.
For example, incorrect temperature control or overcooling will cause the workpiece to deform or not be processed as required; additional processing costs may be incurred due to part quality; parts may be scrapped due to changes in part shape; machining costs; processing accuracy and surface roughness cannot be guaranteed; workpiece fixtures are easily damaged (especially when part accuracy and surface roughness are inconsistent) or machine tools cannot provide high-quality parts. Therefore, manufacturers must improve the quality of heat treatment and reduce product loss.
5) Robots and their automated processing
With the increasing application of industrial robots, the breadth of robot applications is also becoming wider. From surface preparation to processing workpieces, robots can perform a variety of processing tasks, but only the speed of robots can reach the fastest speed. In addition, robots also have autonomous capabilities and flexibility. Most robot systems have complete motion control software. In order to improve efficiency and reliability, most robot systems today use two independent motion controllers and actuators, independent of each other.
When one or more robots need to be moved, the controller can also control each robot, enabling one or more robots to complete various processing tasks. If the robot has to move several points to complete the processing of a workpiece, the robot can achieve similar automatic switching control functions through servo motors. Using servo motors instead of robots (not driven by servo motors) can achieve better performance and precision. If milling is done in the traditional milling method, the motion control of the machine tool is not very flexible and the milling speed will be greatly affected.
6) Digitalization
With the continuous development of smart devices, Industry 4.0 has become an important trend. Industry 4.0 provides manufacturing and service support to customers through network technology in the interconnected world. With the use of Internet technology, enterprises must achieve better interaction, communication, collaboration and coordination. In the context of Industry 4.0, enterprises must adapt to the changing environment. Customers’ needs for improved productivity, safety and corporate competitiveness must be met. Enterprises must monitor the status of inventory, procurement and processing equipment in real time and adjust processes as needed. In addition, smart devices must have high reliability and safety to achieve automation of production lines. These technologies are essential for demanding customers.