Precision design and selection method of hydraulic cutting machine
Generally speaking, in addition to identifying the location and structure of each part, the assembly drawing is very important to determine the matching relationship among the different parts, especially the size and accuracy of the machine.
When the assembly drawing is designed, the method of determining the limit tolerance and coordination has the analogy method, the calculation method and the test method. The calculation method and test method is through calculation or test, determine the matching relationship of method, it has the characteristics of reliable, accurate and scientific, but must spend a lot of time and cost, Shitai economy.
The analogy method is a method based on the use of parts and reference to the experience data of the same kind of machinery. The basic point is statistical investigation, investigating the cooperation and usage of the same type of similar structures or parts, and analyzing and comparing them, so as to confirm their cooperation.
The analogy method is simple and feasible. The selected cooperation focuses on inheriting the practical experience of design and manufacture in the past, and most of them are highly reliable and convenient for product serialization and standardized production. Because of the above advantages, the determination of the limit coordination has been used as an effective method. At present, this method is still the main method of mechanical design and manufacture.
The mechanical precision design of the hydraulic cutting machine is an important part of the machine design. No matter what the design is sophisticated and sophisticated machine, rocket, or simpler machinery such as reducer, we need to consider the conceptual design, composition, art design and accuracy design. When the precision is designed, it is not necessary to consider how to realize the functional requirements of the machine, but also to consider whether it can be made according to the requirements.
The task of precision setting is how to use limit, geometric tolerances and surface roughness to express the allowable difference in manufacturing parts, so as to create machines that meet all performance indicators.