1 Introduction Machinery industry is an important pillar industry of China's national economy. It must change the pyramid management structure caused by the completion of the operation and control of the early production process. The key issue is how to construct a comprehensive automation system to achieve flat management and comprehensive production indicators. optimization. Recalling the development of CNC technology, it was kicked off with the development of CNC machine tools. After World War II, the United States Air Force conducted the research and development of numerical control technology for the needs of armaments. With the rapid development of science, the development of numerical control technology is extremely rapid. From a development point of view, numerical control technology has roughly undergone the following stages of development. The world's first CNC machine was born in the United States. It was jointly developed by the United States Parsons Co. and the Servo Mechanisms of the Massachusetts Institute of Technology for the advancement of missiles and aircrafts. It entered in 1955. Practical stage, called the first generation of numerical control system. Due to the invention of the transistor, in 1959, the numerical control system adopted transistor elements and printed circuit board technology, which improved the reliability of the system and reduced the cost. The numerical control technology stepped into the second stage. After the 1960s, with the emergence of small-scale integrated circuits in small-scale and power-dissipating systems in the numerical control system and the emergence of special-purpose functional devices, the numerical control system entered the third generation with more reliable performance. This three-generation CNC system is a hardware-based CNC, the input, calculation, interpolation and control functions of the part program are all completed by dedicated hardware. The function is simple, the flexibility is not universal, and the design and development cycle is long. In the early 1970s, the popularity of small computers was gradually applied in numerical control systems. Many functions in the system were implemented by software. Computer numerical control (CNC) technology came out and the numerical control system entered the fourth generation. With the rapid development of computer technology, in 1974, the numerical control system entered the fifth phase of its history of development, that is, the use of microprocessors. Since the 1980s, with the development of numerical control systems and other related technologies, the products have been gradually standardized, the efficiency, precision, and reliability of the numerical control systems have been further improved, and the flexible manufacturing system FMS (Flexible Manufacture System) has become practical. Phase. Now microprocessors (CPUs) used in CNC systems have generally adopted 32-bit or 64-bit word lengths, and the clock frequency is higher than 16 MHz. The use of large-scale/ultra-large-scale integrated circuits, reduced instruction set computers, and multiple CPUs has further improved the computing speed and processing capabilities of CNC systems. In this context, people from the system point of view, focusing on thinking more of the optimization problem of the entire system, of course, does not mean that people have less interest in the research of many single key technologies. 2 The rapid evolution of numerical control technology CNC technology is a comprehensive technology that integrates computer technology, automation control technology, measurement technology, modern machinery manufacturing technology, microelectronics technology, and information processing technology. It is a comprehensive development in the field of application in recent years. High-tech. It is to adapt to the processing of high precision, high speed, and complex parts. It is the basis for automation, digitization, flexibility, information, integration and networking. It is the soul and core of modern machine tool equipment and has a wide range of Application areas and broad application prospects. The general control system consists of four parts: input/output (I/O) device, digital control system, drive control device, and electrical logic control execution device. CNC machine tools are CNC machine tools, which are high-efficiency, high-precision, high-flexibility and highly automated modern mechanical processing equipment. They are highly mechatronic products. However, with the gradual increase in the degree of information, to achieve integrated production The demand for integrated automation systems with index optimization is growing and the integration of communication technologies with computers and their network technologies. In order to increase the competitiveness of products in the market and improve the overall benefits, people now consider more of the traditional CNC system technologies. Under the background of enterprise informatization, consider how to use information technology to promote the rapid development of industrial automation to high-end. With the influence and promotion of the global market environment, the demand for improving product quality, increasing production efficiency and reducing product cost is continuously increasing. The real-time optimization of production is generally valued and widely adopted by the process industry. In order to adapt to a changing economic environment, reduce consumption, reduce costs, increase production efficiency, and improve operational safety, seamless integration of control, optimization, planning and scheduling, and production process management must be achieved. To reduce production costs, improve product quality, reduce environmental pollution and resource consumption, products can only be achieved through the optimization of the full-flow automatic control system. The development of the manufacturing industry faces many challenges. The key issue is how to construct a comprehensive automation system to achieve flat management and optimization of comprehensive production indicators. The production index optimization system and integrated support system are composed of ERP, MES and PCS. Its main function is to convert the comprehensive production indicators into production plans and job plans, and the job plans are converted into job standards. The operation standards are converted into production instructions and the operators Operate and control the production process. The comprehensive production index optimization system consists of a three-tier structure consisting of an integrated production index optimization subsystem, a process index optimization subsystem, and a process control subsystem. The function of the integrated production index optimization system decomposes the comprehensive production indicators into production plans, job plans, process indicators, and control loop optimization set values. Generally, a hybrid intelligent optimization control strategy is adopted. In the realization mode, the intelligent behavior and conventional control methods are used. Combine. 3The new technology is widely used in CNC systems 3.1 Digital Image Processing Technology Application At present, digital image processing technology has a wide range of applications in industrial production, such as automatic assembly line for detecting the quality of parts, classifying parts, checking printed circuit board flaws, resistance to elasticity photos and hydrodynamics. Lift analyzes and uses machine vision to track advanced design and manufacturing techniques. The rapid development of digital image processing technology has great potential both in theory and in practice, and has far-reaching implications for China's modernization. The direction of its development is mainly reflected in the following aspects: In terms of high resolution and high speed, its goal is to achieve real-time processing; three-dimensionalization makes the information contained in the image more informative and complete, and combines image and graphics to realize three-dimensional imaging or multidimensional Imaging; Intelligent can realize automatic generation, automatic recognition and processing of images; In terms of new theoretical and new algorithm research, in recent years, some new theories and algorithms have been introduced in the field of image processing, such as Wavelet, neural network, genetic algorithm, etc. Promote the development of image processing technology in the numerical control system. 3.2 Application of Automatic Programming Technology NC automatic programming technology has received extensive attention. Experts and scholars from various countries are all devoted to researching automatic programming systems. CNC machining refers to a machining process method in which a part is automatically processed according to a pre-programmed program on the numerical control machine tool. The final effect of the part processing directly depends on the efficiency and accuracy of the NC program preparation. CNC programming is currently the most important part of improving machining accuracy, surface processing quality, processing efficiency, and production automation. It is widely used in the manufacturing industry. NC programming is divided into manual programming and automatic programming. For those parts with large programs and complex trajectory calculations, manual programming is not possible at all. Even if a machining program can be programmed, its low efficiency cannot satisfy the market demand at all. Due to the tremendous impact of the rapid development of the technological revolution, the traditional mechanical design and manufacturing methods have undergone fundamental changes. The product design and production cycle is getting shorter and shorter, and it is gradually developing in the direction of small batch, multi-variety, high-precision and high-efficiency processing. Especially with the widespread application of computer-aided design and manufacturing (CAD/CAM) technology and computer numerical control processing technology, computer-aided automatic programming is imperative. Automatic programming is to use computer instead of programmers to complete the programming work, automatically generate processing instructions, to solve some difficult problems in manual programming, make full use of computer computing speed and accurate features, can greatly improve the efficiency and accuracy of programming. Since the advent of CNC machine tools, CNC programming has gone through two phases: NC language programming and CAD/CAM integration programming. In the NC language programming stage, in order to solve the programming problem of CNC machining, countries around the world have studied hundreds of languages, among which the APT (Automatically Programmed Tool), which is specially developed for mechanical parts, was developed by the Massachusetts Institute of Technology in the 1950s. Representative. APT programming is to input the program written in APT language into the computer, and the internal compiling system automatically generates the CNC machining instructions. The APT language has undergone several development stages such as APTII, APTIII, APTIN, APT-AC, APTIV/SS and so on. It can handle the processing of 2D, 3D and multi-coordinate parts. The emergence of the APT language has enabled NC machining programming to rise from the “assembly language†level for machine tool instructions to high-level languages ​​for geometry elements and machining methods, with the advantages of simple programming and flexible toolpaths. However, with the rapid development of computer technology and CAD technology, its deficiencies are increasingly manifested. It is limited by the ability of language description, and it has high requirements for users, and it is difficult to meet the requirements of design and manufacturing integration. In the CAD/CAM integration programming stage, with the help of a good software development platform, the CAD software's graphics editing function can be fully utilized to draw the parts drawing directly on the computer and form the graphic file. Then input the craft parameter and call the numerical control programming module, the computer can carry on the data processing automatically, produce the numerical control processing procedure. At the same time, the tool path can be dynamically displayed on the screen. This method does not require the operator to input data, thus greatly reducing the human error and maximizing the efficiency of programming and the quality of processing. Because the graphic programming system generates the NC machining instructions directly from the parts drawing, it can directly use CAD to design the parts drawing. In the 1980s, based on the concept of CAD/CAM integration, a computer integrated manufacturing system (CIMS) was gradually formed. Compared with APT language, it has the following characteristics: First, this programming method is directly oriented to the geometry of the part, without the need for complex mathematical calculations, the need to describe the geometry of the part in a specific language, and has the advantages of being intuitive, simple, accurate, and easy to check; Second, it is conducive to the integration of CAD/CAM. The usual CNC automatic programming system is an integrated software system linked with the corresponding CAD software. It can not only carry out computer-aided design, but also can directly call the designed graphics. Third, this kind of software can be carried out on a general-purpose computer. No special programming machine is needed. It is easy to promote. It is the development direction of the automatic programming system. Due to the relatively late start of the NC programming system in China, although a lot of work has been done, there is still a large gap compared to developed countries. On the basis of the APT language, some similar languages ​​have been developed. However, due to the constraints of subjective and objective factors such as capital and technology, many of the software developed have not been systematic and have yet to be further improved in order to better serve them. Machinery manufacturing and processing industries. With the emergence of increasingly complex parts and high-precision and efficient machining, higher and higher requirements are placed on the NC automatic programming system, and at the same time, it is suitable for the development of advanced manufacturing technologies such as high-speed machining, concurrent engineering, agile manufacturing, and CIMS. After entering the 1990s, with the rapid development of microelectronics, automatic control and numerical control processing technology, numerical control automatic programming and processing technology has shown some new development trends, mainly in the following aspects. (1) The degree of integration is further improved Integration refers to the integration of CNC programming systems with other computer-aided design systems, process control systems, and quality control systems, such as CAD, CAE, CAPP, and CAM, to form an automated CIMS system for integrated systems Full use of internal information to improve product design and manufacturing process efficiency and quality. (2) Further enhancement of intelligence The work on intelligence has just begun. It refers to the integration of human expertise into an integrated system, and uses artificial intelligence to establish various types of knowledge bases, including expert systems, smart libraries, and self-learning functions. (3) Parallelization With the development of computer technology and network technology, especially the popularization and application of Internet technology, computer collaborative work has been highly valued. The development of new products requires experts from related disciplines to work together to form a new working model-one group work. This shortens the product development cycle, lowers manufacturing costs, and improves product quality. 3.3 Application of artificial intelligence control technology The generation of intelligent control comes from the high complexity, high uncertainty of the controlled system and people's increasingly higher control performance. Intelligent control is the advanced stage of traditional control development. It is an important product of the highly differentiated and highly integrated contemporary science and technology. The core of an intelligent control system is focused on "smart", and intelligence can only rely on simulating human intelligence. Therefore, the fuzzy set theory that simulates human fuzzy logic thinking, the neural network theory that simulates the structure and function of the human brain's nervous system, and the evolutionary theory that simulates human perception-action have become the basis for the study of the new discipline of intelligent control theory. component. Since the 1970s, people have summarized the relationship between artificial intelligence technology and adaptive, self-organizing and self-learning control from the perspective of cybernetics, and proposed that intelligent control is the intersection of artificial intelligence technology and control theory, creating a man-machine interaction. Hierarchical hierarchical intelligent control system structure. Fuzzy controllers based on fuzzy linguistic description control rules have been widely used in industrial process control, and the mutual penetration of production systems and expert systems in fuzzy control and artificial intelligence has promoted the development of intelligent control. After entering the 1980s, the expert system technology has gradually matured, and the application research of neural networks has made important progress. Since the 1990s, the application of intelligent control has been experiencing an extremely rapid trend, and comprehensive applications of fuzzy systems, neural networks, and evolutionary computations have been carried out. The new discipline has become an important foundation for intelligent control. The main feature of classical control and modern control theory is model-based control. As the controlled object becomes more and more complex, its complexity manifests itself as high nonlinearity, high noise interference, dynamic catastrophe, and decentralized sensing elements and actuators, hierarchical and decentralized decision making mechanisms, multiple time scales, and complex Information structures, etc., these complexities are difficult to describe with an accurate mathematical model. In addition to the above complexities, there are often some uncertainties, and it is more difficult to describe the uncertainties with accurate mathematical models. Therefore, the traditional control based on the precise model is difficult to solve the control problem of the above complex objects. However, if the artificial intelligence method is introduced into the control system and the analysis of the control theory and the insight of the theory are combined with the flexible framework of the artificial intelligence, it is possible to obtain new breakthroughs in new understanding and control. The research results in the past 20 years show that it is very effective to combine the method of artificial intelligence and feedback control theory to solve the control problems of complex systems. Intelligent control integrates and integrates many contemporary frontier disciplines, multiple advanced technologies, and multiple scientific methods, such as life science, brain science, neurophysiology, thinking science, cognitive science, computer science, artificial intelligence, knowledge engineering, Pattern recognition, system theory, information theory, cybernetics, fuzzy set theory, rough set theory, artificial neural network, evolution theory, dissipative structure theory, coordination theory, catastrophe theory, chaos theory, artificial life theory, techniques and methods are all The formation and development of intelligent control theory plays an important role. The application of intelligent control is very extensive. An intelligent system is generally inseparable from control. Therefore, in this sense, intelligent systems are all intelligent control systems. In a broad sense, intelligent control is a method to study the use of artificial intelligence to overcome the uncertainty of the system and to shift the system from disorder to the desired orderly state. law. The controlled objects here are broad and include numerical control systems. For example, a genetic evolution algorithm can be used to find the optimal processing path, and various intelligent control algorithms can be used to achieve high-precision closed-loop control in CNC systems. The close cooperation of multi-disciplinary technologies can more effectively simulate and synthesize human intelligence and create intelligent control. On a new chapter in the application of numerical control system. 4 The rapid development of computer integrated manufacturing system (CIMS) Since the reform and opening up, people have increasingly realized that they are facing competition in the global market. To survive and develop, an enterprise must improve product quality, reduce costs, and shorten new product development cycles and product delivery cycles. To achieve this, it is necessary to transform the operating mechanism of an enterprise to adapt it to a complex and changeable external environment. . An important aspect of corporate transformation is the integration of information flow and logistics and overall optimization. CIMS includes three basic elements of people/organizations, management and technology. Their mutual relations are shown in Figure 1. Figure 1 Integration of the three elements of CIMS People are one of the factors of production in a company. People are the most active and valuable factors in a company. Modern manufacturing companies are multi-level and multi-sectoral criss-cross systems. They must adopt a complete set of management systems and methods for scientific management. The quality of the business reflects, to a large extent, the level of corporate management. In modern enterprises, technology development is responsible for providing advanced product design, process flow, technical means, and quality assurance for the product manufacturing process. Technology is the guarantee of production. The three elements in CIMS are interrelated, mutually supportive, and mutually restrictive. In CIMS, people still play a leading role: technology is controlled by people, people develop management models, and they determine organizational structures. At the same time, they are also subject to organizational and management models. Constraints, management not only management, but also control technology, technology also supports management. A normal operating enterprise is a unified organic whole formed by the integration of these three elements. Due to differences in specific companies, the established CIMS system is also very different in terms of structure and function, but a unified information platform is established to realize the integration of management and control and information integration so that useful information will not be lost and precipitated, and information will be fully utilized. The benefits are the same. CIM (Computer Integrated Management) was first proposed by Dr. Joseph Harrington in the United States in 1973. It is a new philosophy of corporate organization, management and operation. It uses computer hardware and software to comprehensively use modern management technology, manufacturing technology, and information technology. Automation technology, system engineering technology, etc., organically integrate and optimize the three elements related to people, technology and management and related information flow, logistics and value flow (fund flow) in the entire process of production and operation to achieve high quality of products. Halo, low cost, short delivery time, improve the company's resilience and comprehensive competitiveness, so that companies win the competition. It has been more than 20 years since the concept of CIM was proposed. For 20 years, the concept of CIM has spread from developed countries such as the United States to developing countries. It has expanded from a typical discrete machinery manufacturing industry to a continuous or semi-continuous manufacturing industry such as chemical and metallurgy. The concept of CIM has been accepted by more and more people, and it has become the philosophy guiding factory automation. More and more factories adopt CIM philosophy, use computer technology to realize information integration, and build different levels of computer integrated manufacturing systems. CIMS (Computer Integrated Manufacturing System) is a complex man-machine system built according to CIM philosophy. It sets out from the company's business strategic goals, comprehensively considers the role of people, technology, and management in the enterprise, and uses various advanced technologies, including computer hardware and software, to realize the integration of information flow and logistics in the entire process of production and operation of the company. The overall optimization of product quality, production cost, and production cycle will be achieved so as to bring greater economic benefits to the company. It can be said that CIM, as a new philosophy, is applicable to various manufacturing companies and can also be extended to other companies. The concept of CIMS, until the 1980s, the manufacturing industry faced a complex competitive environment, this concept was widely accepted, and has become a new generation of manufacturing industry production model. The development of CIMS has gone through three major stages: (1) In the development stage of CIMS characterized by information integration, the concept of CIMS was proposed in the 1970s. It was applied and developed rapidly in the 1980s. CIMS during this period is a stage of development characterized by information integration. CIMS, which is characterized by information integration, can better optimize the configuration among various production factors, and the potential of various production factors can be brought into greater play. The various resources that actually exist in the manufacturing industry can be wasted. A significant reduction will result in better overall benefits and meet the needs of market competition during this period. (2) The development stage of CIMS characterized by process integration. Since the 1990s, new products have sprung up and the product update cycle has been shortened. With the popularization of inexpensive high-performance workstations, software tools that accelerate the development of new products have been rapidly developed. Concurrent engineering has been rapidly promoted as an integrated tool for accelerating the development process of new products. Concurrent engineering has become an important means for winning survival and development in the manufacturing industry at that time. Concurrent engineering is a systematic method for designing products and related processes (including manufacturing processes and supporting processes) in an integrated and parallel manner. It is well-developed, and the information flow is multi-directional. Only the CIMS system supporting process integration can meet the requirements. Concurrent product development process methods, advanced technology tools (tooling, etc.), advanced quality assurance, etc., so CIMS technology is the guarantee of production. The three elements in CIMS are interrelated, mutually supportive, and mutually restrictive. In CIMS, people still play a leading role. Technology is controlled by people. People formulate management models and determine organizational structures. At the same time, they are also constrained by organizational and management models. Management not only manages people but also manages technology and technology. A normal operating enterprise is a unified organic whole through the integration of these three elements. (3) The stage of CIMS characterized by enterprise integration, the development of technology in the 21st century and the market competition along the road started in the 1990s. Crises and opportunities existed. On the one hand, with the acceleration of technology development and improvement of living standards, people's constant pursuit of new products, the combination of the two will provide unprecedented opportunities for enterprises; on the other hand, with the ever-changing technological equipment and tools, the development cycle is increasingly Short, companies with the same processing capacity are increasing, and competition will be fiercer. Competition has resulted in fewer and fewer batches of a product. In the past, rigid production lines suitable for mass production have become increasingly unsuited to the new situation. An enterprise should be able to change the original rigid production line into a flexible production line, quickly reorganize the organization and equipment of the enterprise, and respond to market opportunities with an agile response to continuously produce the "individualized" products that users demand. When it is found that one's own company is unable to make agile responses alone, it should cooperate with other companies through the plant subnetwork of high-speed information highways, and it can organize dynamic joint companies developed across enterprises to respond quickly to opportunities. Agile Manufacturing emphasizes the organic integration of flexible, advanced and practical manufacturing technologies, skilled production workers, and high-quality laborers, as well as flexible management among enterprises and within the company, to achieve overall optimization, and to the ever-changing The market responds quickly. Agile manufacturing companies have further developed than manufacturing companies in the parallel engineering stage, with more emphasis on corporate alliances. To effectively support agile manufacturing, CIMS must develop a highly robust integration technology that can modify software systems without interrupting system operation. Outside the enterprise, integrated technologies based on the network should be developed, including integrated technologies such as dynamic alliance companies, off-site design, and off-site manufacturing, etc., and plant sub-networks in the information superhighway should be established as global enterprise networks. Dynamically integrated main tool. The task of the company is to convert raw materials into products to meet the needs of society. In the context of the socialist market economy, Chinese enterprises have or are undergoing a transition from production to production. The management system of production and operation enterprises is generally composed of five parts: survey, decision-making, investment, conversion, and output. The basic process of manufacturing is shown in Figure 2. Figure 2 The basic flow of manufacturing 5 Conclusion Since the reform and opening up, China's numerical control system technology has made considerable progress, but the numerical control system technology is a highly integrated high-tech, involving multi-disciplinary and multi-technology cross-application results. The modern numerical control system itself is a complex system engineering. What is mentioned in the above article is only some of the author's feelings and may not necessarily be appropriate.
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which density is 9~50KGS/M³. It can be automatic cutting the foam into difference sizes
which is according to client`s requirement. It can be realized numerical control with accurate
and convenient ration during the whole production. It becomes more easily and stable to
operate the machine.
ï‚ Computerized control system
It can be realized numerical control during the whole production. It is very easy to
operate with its humanization consideration design. It is able to store 100 formulations in
advance.
ï‚ Automatic formulation function
The computer can be automatic to generate formulation for your reference and
calculate the dosage of material if you input the density and color which you need. The
computer can be automatic to check if the formulation is correct when you give the input of
material.
ï‚ Costing function
The computer can be automatic to display the input of chemical material and the output
of foams in each foaming produce.
ï‚ Printing function
All information including the formulation, the input of chemical material and the output of
foams can be printed. The exact data can be used to strengthen management.
ï‚ Electronic metering system
The metering system is adopted the advance electronic metering pumps from U.S.A.
and the monitoring equipment. Through computer, it can display formulation`s dosage of 12
groups` chemical material and actual supply in figure or diagram. The metering system can
be automatic to adjust it with great precision when the actual supply cannot meet the
formulation requirement. It is the base to produce the good foam and to reduce the
unnecessary wastage with this function.
ï‚ High speed mixing system
It adopts two steps mixing with low-pressure and high-speed. This can make the
foam`s air hole fine and smooth. It presets cycle cooling and automatic cleaning functions.
ï‚ Adjustable oven system
The width of two moving side wall can be adjusted for producing difference width foam.
The height of six steps raising platform can be adjusted for producing difference density
foam.
ï‚ Automatic cutting system
It is computerized control. It can be changing the cutting length in any time. The degree
of accuracy can be equal or less than 1mm.
It can maintain the suitable temperature of chemical material in order to producing high
quality foam.
Technical Specification:
Model SL-08FC
Chemical 12groups
Foaming type Trough foaming/Spray foaming
Speed of mixing ≤5000rpm/ min
Over length 12.5M
Fall plate 6 steps total 6.25M
Conveyor length 18M
Foam width 1.3-2.25m
Foam height ≤1.25M
Foming speed ≤8m/min
Max output 250kgs/min
Total power 70.85KW
Dimension 38m(L)×4.5m(W)×4m(H)
April 30, 2021