Research on the Application and Management Mode of CNC Machine Tools in Small Batch Production Enterprises
With the development of modern manufacturing technology, the selection of numerical control equipment for small-scale production of plow enterprises has become the trend of the times. At present, the numerical control equipment on the market can be described as dazzling. How to make small-volume production enterprises use CNC equipment economically and reasonably. We often carry out technical transformation from the aspects of production management, manufacturing process and production equipment to improve production capacity. In the choice of production equipment, CNC machine tool updates, repairs, procurement, etc. must be considered in what environment to use, how to manage, how to achieve the best economic results, around these issues, the use of CNC machine tools Discuss and study with management.
First, the characteristics of CNC machine tools used in small batch production enterprises
(1) High degree of automation, which can reduce the physical labor intensity of the operator
The CNC machining process is automatically completed according to the input program. The operator only needs to start the tool setting, loading and unloading the workpiece, and changing the tool. During the machining process, the machine is mainly observed and supervised. However, due to the high technical content of the CNC machine tools, the operator's mental work is correspondingly improved.
(2) High precision and stable quality of processed parts
The positioning accuracy and repeat positioning accuracy of CNC machine tools are very high, and it is easier to ensure the consistency of the dimensions of a batch of parts. As long as the design and sequence of the upper art are correct and reasonable, and the careful operation, the parts can be guaranteed to have higher machining accuracy. It is convenient to carry out quality control on the processing.
(3) High production efficiency
CNC machine tool processing can process multiple machining surfaces in one clamping, generally only the first part is detected, so it can save a lot of intermediate processes, such as scribing and size inspection, during the processing of ordinary machine tools in the province, and reduce the auxiliary time. Due to the stable quality of the parts machined by CNC, it brings convenience to the subsequent process, and its comprehensive efficiency is obviously improved.
(4) Facilitating the development and modification of new products
CNC machining generally does not require a lot of complicated process equipment. By programming the machining program, parts with complex shapes and high precision requirements can be processed. When the product is modified and the design is changed, the program needs to be redesigned. Therefore, CNC plus can greatly shorten the product development cycle, providing a shortcut for the development of new products, product improvement and modification.
(5) Development to a more advanced manufacturing system
CNC machine tools and their processing technology are the basis of computer-aided manufacturing.
(6) Large initial investment
This is due to the high cost of CNC machine tools, the long processing preparation cycle, and high maintenance costs.
(7) High maintenance requirements
CNC machine tools are typical products of technology-intensive mechatronics. They need maintenance personnel to understand both mechanics and micro-electricity, as well as better maintenance equipment.
Second, the application of CNC machine tools in small batch production enterprises
The introduction of CNC machine tools, large-scale production of large-scale production enterprises will bring greater development momentum to the enterprise. The application of CNC machine tools is the most suitable for the application of high-speed machining technology in the automatic production line of parts and components. The CMT of some small-volume production enterprises can develop CMT processing and manufacturing by introducing a number of CNC parts processing and production automatic lines. The most typical one is the DAWOO automatic production line from South Korea. We will explain the application of CNC machine tools in the automotive industry with practical high-speed machining technology.
(1) Application of automatic production line technology for CNC machine tools
Overview of the automatic production line of CNC auto parts introduced by small-volume production enterprises: It consists of CMT automobile brake bracket and exhaust pipe high-speed processing production line. Simultaneously introduce the parallel management model and management technology of North American auto companies, and operate various automatic line production operations. The annual processing capacity is 3000pcs, and the manufacturing cost is 1.5~3 minutes/piece. The production line adopts compound high-speed cutting technology, and its machining process reflects the most advanced technology level in contemporary processing and manufacturing.
High-speed dedicated CNC machine tools: Most of the machining processes of key parts have broken through the traditional machining concept, and its high-speed dedicated CNC machine tools have also broken through the traditional structural design. In a nutshell, the design of the machine tool structure is dominated by various high-speed multi-blade special-purpose forming tools and machining processes to meet the requirements of the production line, the processing cycle, and the stable quality chain and precision of the entire production line. In the process of reciprocating machining, the high-speed machining engine and various components of the crankshaft are designed and manufactured according to the concept. The technical parameters of the machine tool numerical control system, quality and precision, material properties of the parts, etc. are decomposed into individual technical indicators according to the specific technical requirements of each processing station and the upper order, so the machine tool structure is relatively simple and the numerical control system Stable and reliable, its processing technology database is solidified in the CNC system.
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