The fact that advanced tools are widely used in powertrain production lines proves that full and reasonable performance of advanced tools is one of the most important means of reducing costs in efficient machining of powertrains. Proper use of advanced machining tools can continuously improve production efficiency and meet the increasing demands of users while reducing manufacturing costs.
The development and progress of the automobile manufacturing industry cannot be separated from the upgrading and innovation of manufacturing technology and equipment. China's auto industry has put forward the requirements of “improving efficiency and reducing costsâ€. The automobile manufacturing industry and its manufacturing equipment suppliers are constantly improving and adapting in various aspects. The application of advanced tools is one of the most important means. This article mainly discusses some of the ideas about the relationship between the performance of advanced tools and the efficiency and cost reduction of powertrain production lines in the efficient processing of powertrains.
At present, the modern automobile powertrain production line has the following obvious features: multi-variety, medium-volume production; high efficiency; fast beat; low cost. High efficiency and low cost require a reasonable match between equipment and tools. Therefore, in the application of advanced tools, in order to achieve high efficiency and beat balance on the planned equipment, high-speed, high-feeding tools are required; the planning life often sacrifices the tool life to meet the beat requirements, but at the same time requires assurance Minimum required tool life; equipment planning is only possible within the limits allowed by the beat, and it is possible to consider extending tool life. Therefore, in the efficient processing of powertrains, it is one of the most important means to fully and reasonably utilize the performance of advanced tools.
The key role of advanced tools in improving efficiency
The requirement for increased efficiency in the powertrain production of the automotive industry is to produce as many parts as possible in a unit of time using as few machine tools as possible. Specific to the advanced tool application, it is to improve the metal cutting rate per unit time, reduce the auxiliary time of non-cutting of the machine tool, and improve the starting rate of the machine tool.
Advanced cutting tools improve the metal cutting rate per machine time, mainly through the high cutting speed and high feed of advanced tools. The pursuit of high efficiency in the powertrain production line has brought a large number of applications for high-speed CNC machine tools, and also requires the tool to have high-speed cutting capability. The tool itself uses a large number of high-speed cutting materials such as PCD, CBN, ceramics, cemented carbide and composite coatings. Advanced tool holders are mostly designed with high-speed HSK series tool holders with good balance performance to accommodate high-speed cutting of tools. The above conditions ensure high cutting speed and high feed applications during tooling. Such as the typical engine block cast from aluminum alloy, the cylinder head joint surface is shown in Figure 1. There are 20 bolt holes to be processed. The advanced tool and traditional tool in the bottom hole processing will have a very high efficiency in the production line. Great impact (see Table 1).
Figure 1 engine cylinder head joint surface
Table 1 Comparison of advanced tools and traditional tools in bottom hole machining
Through the comparison of the data in the table, it can be known that the processing time of the traditional tool is 370% of the advanced tool processing time when processing the bottom hole of the process. For example, the calculation cycle of the production line is 75s, and at least 2 machine tools are required to select the traditional tool. It is also possible to process the bottom hole of the process to meet the beat requirements. The use of advanced tools requires only one machine to process the bottom hole of the process to meet the requirements of other processes. It can be seen that the high speed and high feed of the tool ensure the increasingly high processing efficiency in the production.
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