A Method for Obtaining Energy Efficiency Potential of Machine Tool Service Cycle

Abstract

The invention discloses a machine tool service cycle energy efficiency potential obtaining method. The method comprises the steps of (1) measuring basic energy consumption data of a to-be-measured machine tool in an operation process, (2) establishing a machine tool energy consumption information description function according to the basic energy consumption data, (3) investigating and researchingoperation data of a machine tool of the same model as the to-be-tested machine tool in a typical representative production process, (4) fitting spindle speed distribution of the to-be-measured machine tool in a future service cycle and feeding speed distribution of each feeding shaft respectively and then establishing a corresponding probability density function, (5) fitting the cutting power distribution of the to-be-measured machine tool and then establishing a probability density function of the cutting power distribution, (6) estimating the time proportion of each state in the service cycle of the to-be-measured machine tool, and (7) calculating the energy efficiency potential of the service cycle of the machine tool. The method can effectively predict the energy efficiency of the machine tool in the future service stage and plays an important supporting role in high-energy-efficiency machine tool design and machine tool purchasing stage energy efficiency evaluation.

Description

technical field [0001] The invention belongs to the technical field of mechanical processing and manufacturing, and in particular relates to a method for acquiring the energy efficiency potential of a machine tool service cycle. Background technique [0002] The quantity of machine tools is large and the area is wide, the total energy consumption is huge, the energy utilization rate is low, and the potential for energy efficiency improvement is great; therefore, the research on energy efficiency of machine tools is of great significance. Compared with ordinary household appliances, machine tools have a relatively long service period. The service period refers to the period from the time the machine tool leaves the factory to when the machine tool is scrapped or transferred. For example, an ordinary lathe CA6140 is under good maintenance conditions. Usually up to more than 60 years, the energy consumption of the entire life cycle of the machine tool is mainly generated during...

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Problems solved by technology

[0006] The above-mentioned academic and technical research on the energy consumption of machine tools in service is mainly aimed at a specific period of time, or the energy efficiency of a specific workpiece of machine tools; however, since machine tools are a kind of production equipment with strong versatility, their The processing tasks are ever-changing, and the energy consumption and energy efficiency are even more varied. Therefore, the energy efficiency of the above-mentioned operation process or the processing of a certain workpiece is difficult to represent the energy efficiency potential of the machine tool during the entire service period, making it impossible for machine tool designers and managers to predict the machine tool more accurately. The energy efficiency of the entire service cycle brings difficulties for consumers to compare the energy efficiency of machine tools and make decisions in the procurement stage. The implementation of the "design method" has brought difficulties. The first step in the implementation of the standard is the "general life-cycle assessment"

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