[Review] Development and Prospect of Intelligent Manufacturing in Machine Tool Industry

Abstract I. Overview The machine tool industry is a strategic basic industry that is related to the national economy and national defense. The machine tool is the working machine for the intelligent manufacturing of the equipment manufacturing industry. Without the intelligentization of the machine tool, the intelligent manufacturing of the equipment manufacturing industry cannot be realized. Accelerate the development of intelligent machine tools, is the implementation of...

I. Overview
The machine tool industry is a strategic basic industry that is related to the national economy and national defense. The machine tool is the working machine for the intelligent manufacturing of the equipment manufacturing industry. Without the intelligentization of the machine tool, the intelligent manufacturing of the equipment manufacturing industry cannot be realized. Accelerating the development of intelligent machine tools is the key and foundation for the implementation of "Made in China 2025" to build a strong country.
Intelligent machine tools are the product of the integration and deep integration of advanced manufacturing technology, information technology and intelligent technology, and are the advanced form of CNC machine tool development. At present, the breakthrough of intelligent technology in machine tool monitoring, measurement, compensation, diagnosis and processing optimization in advanced technology countries provides a technical basis for the development of intelligent machine tools. As technology continues to innovate, intelligent machine tools, as mobile Internet smart terminals, will become the key processing equipment for intelligent production systems.
China is in the development stage of CNC machine tools. There is a certain gap between high-speed, high-precision, multi-axis linkage control, multi-channel composite processing, network communication and other numerical control technologies. At present, the intelligent technology of CNC machine tools in China is still in its infancy, and most of the CNC machine tools produced in China at present are not yet equipped with intelligent functions. In recent years, after scientific research, some intelligent technologies have begun to test and apply, and have achieved positive results.

Second, the pattern has quietly evolved. 1. The domestic high-end CNC system has made gratifying progress in the research and development of intelligent functions.
Five CNC system companies, including Huazhong CNC, Guangzhou CNC, Dalian Guangyang, Shenyang Gaojing and Aerospace CNC, independently developed the key technologies of high-end CNC systems with the support of 04 special projects. After years of hard work, five companies have overcome the key technologies of a number of high-end CNC systems, such as CNC system software and hardware platform, high-speed high-precision, multi-axis linkage, bus technology, nano-interpolation, etc., and developed a digital bus-type high-end CNC system products. Achieve technology leap from analog interface, pulse interface to full digital bus control, high speed and high precision. The NCUC-Bus fieldbus technology independently developed by China's CNC system enterprises has been approved for five national standards and won the first prize of provincial and ministerial inventions.

Shenyang Machine Tool Group cooperated with Shanghai Tongji University to form its own research institute. Starting from the underlying technology source code algorithm, it took 5 years to develop the i5 CNC system, established the iSESOL cloud platform, and formed the intelligent machine tool internet based on iSESOL cloud platform. Application framework.

2. The intelligent process of the CNC machine tool is accelerated
A group of CNC machine tool mainframe manufacturers have integrated intelligent application technology on the mainframe through scientific and technological research to improve the performance of CNC machine tools.
For example, the TGK46100 high-precision coordinate boring machine developed by Kunming Machine Tool Co., Ltd. of Shenji Group uses temperature sensor and temperature module to monitor the heating deformation and thermal compensation of the spindle system in real time through the numerical control system. The five-axis linkage type has backlash compensation and pitch. Compensation and volume compensation.
Qinchuan Machine Tool Group's newly developed CNC worm wheel grinding machine adopts high-precision synchronous control technology and electronic gear box. The whole machine operation can realize automatic card loading, automatic tool setting, automatic grinding and automatic correction of grinding wheel.
The high-precision one-way wire cutting machine developed by the machine tool industry is equipped with a six-axis CNC system and an electroless intelligent power supply, an automatic threading and constant tension mechanism, a temperature compensation device, and a wire-cut machining process database.
The newly developed five-axis CNC tool grinding machine in the machine tool industry, equipped with special CNC system and tool grinding special software, with complex surface machining mathematical modeling and automatic programming, on-line inspection of workpiece and grinding wheel, grinding size compensation, grinding wheel correction compensation, grinding Intelligent functions such as cutting process and process parameter optimization have improved the intelligence level of the whole machine.

3. The demonstration application of domestic high-end CNC machine tools with certain intelligent functions is obvious
For example, Dongguan Jinsheng Mobile Terminal Intelligent Manufacturing Demonstration Workshop, which was jointly built by Wuhan Huazhong Numerical Control Co., Ltd. and Dongguan Jinsheng Precision Components Co., Ltd., has realized the national production and independent intelligent manufacturing, and was selected as the national intelligent manufacturing pilot. The only demonstration site for the demonstration exchange. At the same time, Wuhan Huazhong Numerical Control Co., Ltd. established the “CNC Processing Big Data Center” in Wuhan, which can realize the intelligent functions such as remote monitoring, processing optimization and health diagnosis through the wireless network to the relevant data of the user workshop production line, and improve the service for the users. Level.
Dalian Guangyang Technology Engineering Co., Ltd. cooperated with Beijing Power Machinery Research Institute (31 institutes of Aerospace Science and Technology Group 3) to achieve results in the aspects of CNC system, servo drive and motor, and vertical five-axis machining center. The application of the promotion, combined with the aerospace complex, core parts of the process manufacturing needs of in-depth cooperation. In August 2013, Dalian Guangyang Technology Engineering Co., Ltd. delivered two high-speed and high-precision five-axis vertical machining centers of different specifications to Beijing Power Machinery Research Institute. So far, the two 5-axis machine tools carrying a number of special projects have completed the processing of key components of multiple batches and multiple varieties of airfare, supporting the military production tasks of the Beijing Institute of Power Machinery. Under the successful application of demonstration, Beijing Institute of Power Machinery promoted more than 10 vertical five-axis machining centers of Dalian Guangyang Technology Engineering Co., Ltd. Dalian Guangyang Technology Engineering Co., Ltd. has signed contracts with military enterprises such as Harbin Dongan Engine, Guizhou Liyang Aero Engine and Hunan Zhuzhou South Power to further expand the application of special results in aerospace.

4. China's first intelligent manufacturing equipment project passed the acceptance
The first “Intelligent Manufacturing Equipment Project” of the Ministry of Industry and Information Technology, which was undertaken by Yunnan CY Group Co., Ltd., “Development and Demonstration Application of Digital Workshop for High-grade CNC Lathe Manufacturing” passed the acceptance in August 2016. The project consists of 91 sets of equipment, which realizes mixed flow flexible manufacturing, automatic loading and unloading, automatic product identification and tracking, online automatic detection, product flow intelligent control, intelligent fault diagnosis, processing parameter optimization, real-time monitoring of production process and management informationization. The numerical control rate of key equipment of the project is 100%, the production efficiency is increased from 100 units per month to 300 units, the production line personnel are reduced by 57.5%, the energy consumption is reduced by 38.4%, and the pass rate of parts critical process inspection is increased from 64% to 96%. Obvious economic benefits. This project is the first case in the machine tool industry to apply intelligent production line manufacturing machine tools in recent years, with demonstration significance.

5. "CNC machine interconnection communication protocol standard and test verification" project started
With the advancement of the development strategy of "Made in China 2025", CNC systems, CNC machine tools and related digital equipment will be vigorously developed. The intelligent upgrade of CNC machine tools, intelligent manufacturing standards play a vital and fundamental role in the entire strategy, and all of this depends on the interconnection of CNC machine tools. To achieve the interconnection of CNC machine tools, the relevant protocol standards are decisive factors. Under the organization of the China Machine Tool Industry Association, the “CNC Machine Tool Interconnection Communication Protocol Standards and Test Verification” project, which was included in the Ministry of Industry and Information Technology's Intelligent Standards Development Plan, has been effectively carried out as planned.

Third, the machine tool association promotes the main task of "smart manufacturing"
1. Prepare the guiding document of the “13th Five-Year Plan” – “China Machine Tool 2020”, in which “Intelligent Manufacturing” is listed as an important direction of the “13th Five-Year” CNC machine tool technology development, and proposes the intelligent development tasks and key points of CNC machine tools. Research and development content.
2. Implement the National Smart Manufacturing Development Plan 2016-2020. The Machine Tool Association organized industry key enterprises to actively undertake the national smart manufacturing new model demonstration project and actively participate in the formulation of national intelligent manufacturing standards. At present, the machine tool industry includes Shenyang Machine Tool Group Corporation, Jinan No. 2 Machine Tool Group Corporation, Qinchuan Machine Tool Group Corporation, Dalian Machine Tool Group Corporation, Huazhong CNC Co., Ltd., Dalian Guangyang Technology Engineering Co., Ltd., Sichuan Pushkin Ningjiang Machine Tool Co., Ltd., Ningbo More than 20 companies, such as Haitian Precision Co., Ltd., undertake the national intelligent manufacturing new model demonstration project and the national intelligent manufacturing standard formulation project.
3. Actively promote the application of domestic high-end CNC machine tools. Through the establishment of a long-term cooperation mechanism with military manufacturing enterprises, the results of international machine tool exhibitions will be held, the localization of imported machine tools for military production will be used, the catalogue of domestic high-end CNC machine tools will be established, and the cooperation between machine tool factories and users will be strengthened to promote high-end CNC machine tools. Research and manufacture, actively promote the application of domestic high-end CNC machine tools, promote the localization of manufacturing equipment in the military industry, promote the independence, security and control of military equipment, and contribute to the modernization of China's national defense construction.
4. The China Machine Tool Industry Association led the establishment of the "CNC Machine Tool Interconnection Protocol Standard Alliance", which is composed of Wuhan Huazhong CNC Co., Ltd., Shenji (Shanghai) Intelligent System R&D and Design Co., Ltd., Guangzhou CNC Equipment Co., Ltd., Shenyang Gaojing CNC Intelligent Technology Co., Ltd., Dalian Kede CNC Co., Ltd., Tianjin Tyson CNC Technology Co., Ltd., Dalian Machine Tool Group Co., Ltd., Sichuan Pushi Ningjiang Machine Tool Co., Ltd., Beijing Beiyi Machine Tool Co., Ltd., Wuhan Huagong Laser Engineering Co., Ltd., Huazhong University of Science and Technology, Beijing University of Aeronautics and Astronautics, Beijing Languang Innovation Technology Co., Ltd. and other enterprises and institutions, began to launch the "CNC machine interconnection communication protocol standards and test verification" project work, and achieved gratifying progress.

Fourth, the development and prospect of "smart manufacturing" in the machine tool industry
“Intelligent Manufacturing” is one of the key projects identified in “Made in China 2025”. “CNC machine tools and intelligent robots” are the key areas and the main direction of grabbing the commanding heights of the future. The machine tool industry must carry out “intelligent machine tool technology and planning”. Research on intelligent manufacturing systems to promote the application of the "smart manufacturing" model.

1. Research on intelligent technology of numerical control system
——Development of an open intelligent CNC system;
——Innovative research based on intelligent processing technology of open intelligent CNC system;
- Develop application software such as optimized programming and simulation technology to develop an open application software platform;
-- Development of smart sensors and intelligent features.

2. CNC machine tool intelligent and intelligent machine tool development
CNC machine tools adapt to high-efficiency and high-precision machining, production system information integration and intelligent control requirements, develop online intelligent detection technology, machine tool intelligent diagnosis and intelligent maintenance technology, processing optimization technology based on intelligent manufacturing technology, and remote communication based on industrial Internet and big data Functional and service capabilities.

3. Research and application of "smart manufacturing" mode
Research and application of intelligent manufacturing models for manufacturing networked, digital workshops and intelligent manufacturing systems. Use PC-CAPP-CAM and other digital technologies and network communication technologies to achieve product lifecycle management (PLM); establish manufacturing execution systems (MES); establish data acquisition systems; establish industrial Internet; enterprise resource planning management system (ERP) security run. Utilize next-generation information technologies such as cloud computing and big data to achieve intelligent optimization of operations, management and decision-making.
In summary, under the combined effects of national industrial policy support, new technology revolution promotion and market demand traction, the “smart manufacturing” of the machine tool industry will step into the accelerated growth period. The development of “smart manufacturing” will bring a fierce impact on the traditional manufacturing system and promote profound changes in the industrial structure. Under the new normal of China's economy, the machine tool industry is facing an urgent need to upgrade market demand. After the baptism of the new technology revolution, the business model of the machine tool industry will gradually change.
The technological development process of "CNC machine tool - CNC machine tool intelligent - intelligent machine tool - intelligent manufacturing workshop - intelligent manufacturing factory - intelligent manufacturing system" has shown a bright future for the machine tool industry. Undoubtedly, "smart machine tools" will become the core equipment in the intelligent manufacturing system, and accelerating the development of "smart machine tools" is the primary task of implementing "Made in China 2025" to build a strong country.
Author: Shao Chin as Editor: Zhangfang Li design, push: Ye Han total review: Yang Qing


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