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Rapid Development Of CNC Machine, 12 Major Trends In The Future
Jan 16, 2018

At present, the rapid development of CNC machine tools, high speed, high precision, complex, intelligent, open, parallel driven, networked, extreme, green has become the trend and direction of the development of CNC machine tools. As a big manufacturing country, China mainly relies on the comparative advantages of labor force, price and resources, while there is still a big gap between its technological innovation and independent development of its products with its foreign counterparts. China's CNC industry can not be comfortable with the status quo. We should seize the opportunity to continue to develop, strive to develop their own advanced technology, increase technological innovation and personnel training, improve enterprise comprehensive service capabilities, and strive to shorten the gap with developed countries. Strive to achieve early CNC machine tool products from low to high-end, from primary product processing to sophisticated manufacturing changes, from China to create China to create, from manufacturing power to manufacturing power transformation. Brass CNC Turning Manufacturer    
  1, high-speed

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With the rapid development of automobile, defense, aviation, aerospace and other industries as well as the application of new materials such as aluminum alloy, the demand for high-speed CNC machining is getting higher and higher.

(1) Spindle speed: The machine adopts electric spindle (built-in spindle motor), the maximum spindle speed reaches 200000r / min;

(2) Feedrate: At a resolution of 0.01μm, the maximum feedrate reaches 240m / min and accurate machining of complex profiles is available;

(3) computing speed: The rapid development of the microprocessor has provided a guarantee for the CNC system to develop at a high speed and high precision. The CNC system developed by the CPU has been developed to 32-bit and 64-bit. The frequency is raised to hundreds of megahertz, megahertz. Due to the greatly increased operation speed, the feed speed of up to 24 ~ 240m / min can be obtained even when the resolution is 0.1μm and 0.01μm.

(4) Tool Change Speed: At present, the tool exchange time of advanced machining centers in foreign countries generally has been around 1s, and the high has reached 0.5s. Germany Chiron company will design the magazine as a basket style, with the spindle as the axis, the tool is arranged in the circle, the knife to the knife change time is only 0.9s.Stainless Steel CNC Turning Manufacturer

2, high-precision

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The requirements for the accuracy of CNC machine tools are now not limited to the static geometric accuracy, the accuracy of machine tools, thermal deformation and vibration monitoring and compensation more and more attention.

(1) Improve the control precision of CNC system: Adopting high-speed interpolation technology to achieve continuous feed with tiny blocks, make CNC control unit more sophisticated and adopt high-resolution position detection device to improve position detection precision 106 pulse / turn built-in position detector AC servo motor, the position detection accuracy of up to 0.01μm / pulse), the position servo system using feedforward control and nonlinear control methods;

(2) The use of error compensation technology: the use of backlash compensation, lead screw pitch error compensation and tool error compensation technology, thermal deformation of equipment and space error comprehensive compensation. The results show that the application of integrated error compensation technology can reduce the machining error by 60% ~ 80%.

(3) Adopt the grid to check and improve the accuracy of the motion trajectory of the machining center, and predict the machining accuracy of the machine tool through simulation so as to ensure the positioning accuracy and repetitive positioning accuracy of the machine tool so that the performance of the machine tool can be stable in long term and can be completed under different operating conditions Processing tasks, and ensure the quality of parts processing.Aluminum CNC Milling Manufacturer

3, functional complex

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The meaning of a composite machine means that a machine tool to achieve or as much as possible from the rough to finished a variety of elements of processing. According to its structural characteristics can be divided into two types of composite process and composite process. Technology complex machine tools such as boring and milling complex - machining centers, lathe milling complex - turning centers, drilling and milling complex boring - complex machining center; process complex machine tools such as multi-faceted multi-axis machining of composite machine and double spindle Turning center and so on. The use of composite machine tool to reduce the workpiece loading and unloading, replacement and adjustment of tool auxiliary time and the error generated in the middle of the process to improve the accuracy of parts processing, shorten the product manufacturing cycle, improve production efficiency and manufacturers market responsiveness, Relative to the traditional process of decentralized production methods have obvious advantages.

The complex process also led to the machine tool to the modular, multi-axis development. The latest German company Turning Center is a modular structure, the machining center to complete the turning, milling, drilling, hobbing, grinding, laser heat treatment and other processes, to complete the processing of complex parts. With the continuous improvement of modern machining requirements, a large number of multi-axis CNC machine tools more and more welcomed by major companies. At CIMT2005, domestic and foreign manufacturers exhibited various forms of multi-axis machine tools (including double-spindle, double-tool stand, 9-axis control, etc.) and can achieve 4 to 5 axis linkage Five-axis high-speed gate machining center, five-axis high-speed milling center.Stainless Steel Milling Manufacturer



  4, intelligent control

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With the development of artificial intelligence technology, in order to meet the manufacturing flexibility and manufacturing automation development needs, CNC machine tools are increasingly intelligent. Specifically reflected in the following areas:

(1) Adaptive process control technology: By monitoring the machining process of cutting force, spindle and feed motor power, current, voltage and other information, the use of traditional or modern algorithms for identification to identify the tool by Force, wear, damage status and the stability of machine tool processing state, and according to these conditions real-time adjustment of processing parameters (spindle speed, feed rate) and processing instructions, the equipment in the best running state to improve the machining accuracy and reduce the machining surface Roughness and improve the safety of equipment operation;

(2) Intelligent optimization and selection of machining parameters: The expert system or model-based "intelligent optimization and selector of machining parameters" is constructed based on the experience of craft experts or technicians, the general and special rules of machining parts by modern intelligent methods, , Use it to obtain the optimized processing parameters, so as to achieve the purpose of improving programming efficiency and processing technology level and shortening production preparation time;

(3) Intelligent fault self-diagnosis and self-repair technology: According to the existing fault information, the application of modern intelligent methods to achieve rapid and accurate fault location;Aluminum CNC Turning Part Manufacturer

(4) intelligent fault playback and fault simulation technology: a complete record of the system can be a variety of information on the CNC machine error and accident occurred a variety of playback and simulation to determine the cause of the error to find a solution to the problem, Accumulation of production experience;

(5) Intelligent AC servo drive: intelligent servo system that can automatically identify the load and automatically adjust parameters, including the intelligent spindle AC drive and intelligent feed servo. This kind of drive device can automatically identify the motor and the load moment of inertia, and automatically optimize and adjust the control system parameters, the drive system for optimal operation;

(6) Intelligent 4M CNC system: Integration of processing and testing during manufacturing is an effective way to achieve rapid manufacturing, rapid testing and quick response. Measurement, modeling, manufacturing, machine Operation (Manipulator) Four (ie 4M) fusion in a system, to achieve information sharing, and promote the measurement, modeling, processing, clamping, operation integration.  

5, German system open

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(1) Open to future technologies: Since the interfaces of hardware and software follow the generally accepted standard protocols, only a small amount of redesign and adjustment are required. The new generation of common hardware and software resources may be adopted, absorbed and compatible by existing systems. Means that the system development costs will be greatly reduced and system performance and reliability will continue to improve and in the long life cycle;Stainless Steel CNC Turning Part Manufacturer

(2) Open to users' specific requirements: update products, expand functions, provide various combinations of hardware and software products to meet special application requirements;

(3) The establishment of numerical control standards: A new CNC system standard ISO14649 (STEP-NC) is being researched and developed internationally to provide a neutral system independent of a specific system and capable of describing the entire life cycle of a product Unified data model, in order to achieve the entire manufacturing process and even the standardization of product information in various industrial fields. Standardized programming language, both user-friendly, but also reduces the operational efficiency directly related to labor consumption.

6, drive parallelization

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Parallel kinematic machine tool to overcome the traditional machine series mechanism moving parts quality, low system stiffness, the tool can only be along the fixed rail feed, low degree of freedom of operation, equipment processing flexibility and mobility is not enough and other inherent shortcomings in the machine tool spindle As the moving platform) and the base (usually static platform) between the multi-rod parallel connection mechanism driven through the length of the lever rod system to make the rod-supported platform to obtain the corresponding degrees of freedom of movement, multi-coordinate linkage NC Processing, assembly and measurement of a variety of functions, to better meet the complex processing of special parts, with a modern modular high degree of modularity, light weight and speed advantages. As a new type of processing equipment, parallel machine tool has become an important research direction of machine tool technology at present and has been highly regarded by the international machine tool industry. It is considered as "the most significant advance in machine tool industry since the invention of numerical control technology" and "21st Century a new generation of CNC machining equipment."Aluminum CNC Milling Part Manufacturer


7, extreme (large and miniaturized)

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The development of national defense, aviation and aerospace industries and the enlargement of the basic industrial equipment such as energy require the support of large and well-performing CNC machine tools. The ultra-precision machining technology and micro-nano technology is the 21st century strategic technology, the need to develop to meet the micro-size and micro-nano machining accuracy of new manufacturing processes and equipment, micro-machine tools, including micro-cutting (car, milling, grinding) , Micro-electric machining machine tools, micro-laser processing machines and mini-presses and other demand is gradually increasing.


8, interactive information network

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For the face of fierce competition for the enterprise, the CNC machine tools with two-way, high-speed networking communications capabilities to ensure that information flow in all parts of the workshop smooth flow of non-stop is very important. It not only can realize the sharing of network resources, but also realize the long-distance monitoring, control, training, teaching and management of CNC machine tools as well as the digital service of NC equipment (remote diagnosis, maintenance, etc.) of CNC machine tools. For example, the Japanese Mazak company introduced a new generation of machining centers equipped with an external device called the e-Tower (e-Tower), including computers, mobile phones, offboard and in-camera, enabling voice, graphics, video and text Communication fault alarm display, online help troubleshooting and other functions, is an independent, self-managed manufacturing unit.Brass CNC Milling Part Manufacturer


9, new features

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In order to improve the performance of all aspects of CNC machine tools, the application of new functional components with high precision and high reliability has become inevitable. Representative new features include:

(1) High-frequency spindle: High-frequency spindle is the integration of high-frequency motor and spindle components, with a small size, high speed, stepless speed control and a series of advantages in a variety of new CNC machine tools have been widely application;

(2) Linear motor: In recent years, the linear motor is widely used, although the price is higher than the traditional servo system, but due to load variation, thermal deformation compensation, magnetic isolation and protection of key technologies such as the application of mechanical transmission structure Simplify, the dynamic performance of the machine has been improved. Such as: Siemens produced 1FN1 series three-phase AC permanent magnet synchronous linear motor has been widely used in high-speed milling machines, machining centers, grinding machines, parallel machine tools and high dynamic performance and precision machine tools; Germany EX-CELL-O The company's XHC horizontal machining center three-way drive are used two linear motors;

(3) Electric ball screw: electric ball screw is a servo motor and ball screw integration, can greatly simplify the structure of CNC machine tools, with fewer transmission links, compact structure and a series of advantages.Stainless Steel Milling Part Manufacturer


10, high reliability

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CNC machine tools compared with the traditional machine, an increase of CNC system and the corresponding monitoring devices, the application of a large number of electrical, hydraulic and mechanical and electrical installations, prone to failure probability increases; fluctuations in industrial power grid voltage and interference of CNC machine tools Reliability is extremely unfavorable, and CNC machining parts of the surface more complex, long processing cycle, requires MTBF at 20,000 hours or more. In order to ensure the high reliability of CNC machine tools, we must carefully design the system, strict manufacturing and clear reliability goals and troubleshooting through analysis and identify the weak links. The mean time between failures of CNC system in foreign countries is more than 700,000 hours. The mean time between failures of CNC system in our country is only about 10,000 hours. The average working time of foreign machine is more than 800 hours, while the highest in China is only 300 hours.


11, the process of green

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With the increasingly stringent environmental and resource constraints, the greening of manufacturing and processing is becoming more and more important, while China's resources and environmental problems are particularly prominent. Therefore, in recent years, no or less coolant, to achieve dry cutting, semi-dry cutting energy-saving environmental protection machine tools continue to emerge, and continue to develop. In the 21st century, the megatrends of green manufacturing will accelerate the development of various energy-saving and environment-friendly machine tools and occupy more world markets.Steel CNC Machining Milling Parts Manufacturer


12, the application of multimedia technology

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Multimedia technology combines computers, audiovisual and communications technologies to give computers the ability to process sound, text, images and video information in a comprehensive manner, and therefore presents a graphical requirement for the user interface. Reasonable user-friendly user interface greatly facilitates the use of non-professional users, people can operate through the window and menu to facilitate blueprint programming and fast programming, three-dimensional color dynamic display of three-dimensional graphics, graphics, graphics, dynamic tracking and simulation, different The direction of the view and the partial display scaling function. In addition, the application of multimedia technology in numerical control technology can be integrated and intelligent information processing, used in real-time monitoring systems and fault diagnosis of production site equipment, production process parameter monitoring, and therefore has great application value.

Domestic CNC machine tools lack the core technology, from high-performance CNC system to the key components are basically dependent on imports, even in recent years some domestic manufacturers struggling to create their own brand, but the function of the product, the reliability of performance is still Foreign products have a certain gap. In recent years, domestic CNC machine tool manufacturers have acquired some advanced numerical control technology through technology introduction, mergers and acquisitions both at home and abroad, as well as overseas procurement. However, the research on basic technologies such as machine tool structure and precision, reliability and user-friendly design lacks Cultivation of independent development capabilities, domestic CNC machine tool technology, performance and quality and there is a big gap between foreign countries, the same difficult to get the majority of users recognized.

  Some domestic CNC machine tool manufacturers do not pay enough attention to the overall improvement of technology and manufacturing level. The basic processing methods are ordinary machine tools and inefficient knives. The assembly and commissioning is entirely by hand. The processing quality can not be stabilized and improved under the tight production schedule. In addition, many domestic CNC machine tool manufacturers still follow the original production management manual credit management system, the level of technology and management inefficiencies make the enterprise can not form a sufficient scale of production. Such as foreign machine tool manufacturers can do a week to adjust the product, and the domestic production cycle is too long and difficult to control. Therefore, we should pay attention to the introduction of technology at the same time to strengthen its own technological transformation and improvement of management level.Steel CNC Machining Milling Parts Manufacturer

  Due to the rapid development of CNC machine tool industry, some enterprises ignore the long-term interests, pay little attention to improving their comprehensive service level, and even lack a real understanding of service. They only pay attention to marketing instead of paying attention to pre-sales and after-sales service. Some companies send personnel on the production of CNC machine tools lack of understanding, will not use or use bad CNC machine tools, but also can not guide the user to use the machine tool; some lack of basic knowledge of advanced and efficient tool, can not provide better process solutions , Users naturally lack confidence in the manufacturer. The manufacturer's service should start with researching users' processing products, technology, production types and quality requirements, helping them to select equipment, recommending advanced technology and aids, providing professional trainers and a good training environment, and helping them to develop the machine tool The maximum efficiency, processing high-quality end products, so as to gradually get the user's approval, improve the domestic market share of CNC machine.

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    Tel: +86-755-27359623
    Mob: +8618516195475

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