The hottest manufacturing mode for the 21st centur

2022-09-21
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Manufacturing mode for the 21st century

Abstract This paper expounds that the testing of wires and cables of the first tensile testing machine introduced and developed in China in recent years is a necessary advanced manufacturing mode, analyzes the connotation of advanced manufacturing mode, and introduces China's advanced manufacturing mode for the 21st century

key words: mechanical manufacturing virtual manufacturing intelligent manufacturing production mode at present, advanced manufacturing industry is developing in the direction of precision, automation, flexibility, informatization, integration and intelligence. With this development trend, many advanced manufacturing technologies have emerged, such as computer integrated manufacturing technology, information network technology, automation technology, modern management technology and intelligent manufacturing technology, Scientific and technological progress aimed at improving the market competitiveness of manufacturing products and the successful implementation of enterprise transformation projects. This is not just a technical problem, but the advanced manufacturing technology must operate in the matching manufacturing mode to achieve good results. Therefore, the research on advanced manufacturing mode is imperative. 1. Advanced manufacturing mode

1.1 concurrent engineering

in 1988, nner of the National Defense Analysis and Research Institute (IDA) submitted a research report entitled "the role of Concurrent Engineering (CE) in weapon system procurement", which proposed the concept of concurrent engineering

concurrent engineering is defined as a systematic method to design products and their related processes (including manufacturing process and support process) in an integrated and parallel manner. This method requires product developers to consider all factors, including quality, cost, schedule, user requirements and so on, from concept formation to product scrap disposal in the whole life cycle of the product from the beginning of design. In order to understand the connotation of concurrent engineering, we should pay attention to the following problems:

(1) ce is a method about the design process, which should comprehensively consider various problems of related processes in the design process, but does not include manufacturing process and other processes. On the contrary, it is emphasized to complete the whole design before production

(2) ce does not require design and production to be carried out in parallel or cross finish the design and manufacturing tasks, but refers to the concurrent design of products and their downstream processes. CE cannot arbitrarily eliminate any necessary stage of existing, sequential and forward information transmission in a complete engineering process

(3) the technical concept of CE is the integration of the design process. It is a side of enterprise integration, not a new concept beyond enterprise integration

(4) ce is not only the design of machinability, reliability and maintainability, but also the design of regular cleaning of electromechanical products, including the aesthetics, durability and even the disposability of products after scrapping. Its purpose is to optimize the design

ce has changed the enterprise structure and working mode of the manufacturing industry, and the enterprises implementing CE can achieve the following goals: by shortening the design cycle and reducing the redesign workload, in the design stage, not only the products should be designed, but also the methods and plans related to production should be determined, so that the manufacturing cycle of products can be shortened and the time for products to be put into the market can be shortened; CE emphasizes product design and process design to optimize the production process and improve product quality; CE is to reduce the consumption of products in the whole production cycle, including the consumption of design, manufacturing, assembly, inspection and maintenance, so it can reduce costs; Compared with sequential engineering, CE has advantages in product quality, production cost, production flexibility and product innovation, so it can enhance the competitiveness of the market

in order to successfully implement the production mode of concurrent engineering, in addition to relying on existing scientific and technological achievements and encouraging innovation, we should also strengthen the research of basic theory and technology. CAX (abbreviation of CAD, cam, CAPP, CAE, etc.) and DFX (abbreviation of performance-oriented DFP, assembly DFA, manufacturing DFM, analysis DFE, test DFT, quality DFQ, cost DFC, service DFS, etc.) are the key technologies of concurrent engineering; In addition, we should strengthen the modeling and Simulation of CE process, strengthen data management, and strengthen comprehensive coordination technology. At present, based on the connotation of concurrent engineering, some domestic experts and scholars in this field have carried out research on automatic process planning and concurrent manufacturing methods for concurrent engineering, and discussed the implementation strategies of concurrent process planning and concurrent manufacturing. 1.2 lean production

lean production (LP) is the concept of LP put forward in two monographs published by Massachusetts Institute of Technology (MIT) in 1989 and 1990, namely, the decline and Countermeasures of American manufacturing industry - recapturing production advantage and the machine that changes the world. In fact, Japan has done a lot of work in this regard before this

lp is a new technology summarized in production practice, which is characterized by:

(1) paying attention to the needs of customers, providing marketable products with good quality at the fastest speed and appropriate price to occupy the market, and providing high-quality services to customers

(2) pay attention to the role of enterprise employees, emphasize one specialty and multiple abilities, implement the group autonomy work system, give each employee a certain degree of independent autonomy, and operate the enterprise culture

(3) simplify all work that does not create value in production, reduce management levels, simplify organization, simplify product development process and production process, reduce non production costs, and emphasize integrated quality assurance

(4) keep improving, continuously improve production, reduce costs, and strive to achieve zero waste, zero inventory and product variety diversification

there are four basic support technologies for LP implementation:

(1) Group Technology (GT for short) is the foundation. Using GT method, the old mode of the original production system can be changed into a new mode of flow type and unit type, and the work of enterprises can be simplified and orderly

(2) just in time (JIT) is the core of LP development. Driven by market demand, JIT provides products with market demand according to quality, quantity and time, so as to achieve low cost, high quality and high efficiency

(3) total quality management is simply called TQM within ± 1% of the set value. LP requires enterprise employees to pay attention to product quality, not only to make products qualified, but also to constantly put forward new improvement plans to improve quality and achieve perfection

(4) the effect of concurrent engineering implementation on LP is mainly reflected in product design

some domestic enterprises have applied sophisticated production principles and achieved good results through practice. For example, Shanghai Volkswagen launched to establish, improve and strictly implement the working regulations of XPS special committee. According to the actual situation of the factory, it implemented the JIT principle for the processing of main parts, fundamentally changing the traditional management thought and management method

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