For the protection of the environment, whether the government or individuals, this matter as a major event, after all, there is no green living environment, then our health will not be guaranteed! The same is true in industry, where increasing attention to green manufacturing at home and abroad depends largely on political reasons.
Pollution and environmental waste have become the political issues of a national development. Environmental waste and pollution are often dealt with by the government using political means to formulate regulations and regulations, rather than the own technological reform of business groups or enterprises.
The European Union has successively issued three green directives, wEEE.RoHS and EuP, taking advantage of the pressure of government and politics to formulate regulations, supporting green manufacturing in accordance with environmental protection requirements, formulating economic mechanism and market strategies, and guiding the development of cutting and cutting machines of green manufacturing.
Many countries have issued environmental regulations to restrain and guide the development of manufacturing industry, and promote the green process of manufacturing from the legislative system through regulations, which will inevitably lead to the green process of enterprises.
Precision design and selection method of hydraulic cutting press machine
Precision design and selection method of hydraulic cutting machine
Generally speaking, in addition to indicating the position relationship and structure of the parts, it is very important to determine the coordination relationship between the parts, especially the accuracy and performance of the machinery. Pay attention to indicate the cooperative relationship between them.
When performing the assembly drawing design. The methods of determine the limit tolerance and coordination include analogy method, calculation method and test method. Calculation method and test method are through the means of calculation or test, to determine the relationship of cooperation, it has the characteristics of reliable, accurate, scientific, but must spend a lot of cost and time, stone too economy.
Analogy method is a method to determine the coordination according to the use of parts and the empirical data of similar machinery. The basic point is statistical investigation, to investigate the cooperation and use of the parts of the same structure or the same type, and then analyze the analogy, and then determine its cooperation.
The analogy method is simple and easy to do, the selected cooperation pays attention to inherit the practical experience of the past design and manufacturing, and most of them through the actual verification, high dependence, and convenient for product serialization, standardized production. The craftsmanship is also better. Because of the above advantages, the determination of the limit fit has been used as an effective method. At present, this method is still the main method of mechanical design and manufacturing.
Mechanical precision design of hydraulic cutting machine is an important part of machine design. Regardless of the design is a complex and sophisticated search machine, rocket. Or a relatively simple machine such as the reducer. Need to consider the principle concept design, composition, art design and precision design. When conducting precision design, it need to consider how to achieve the functional requirements of the machinery, and whether it can be manufactured as required.
The task of precision setting is how to use the relevant limit coordination, geometric tolerance, extreme surface thickness, etc. Express the allowable difference of manufacturing the spare part of the machinery, so as to produce the machinery to meet the various performance indicators.
Post time: Apr-20-2025