Views: 267 Author: Site Editor Publish Time: 2021-04-27 Origin: Site
A reasonable hydraulic system for construction machinery should minimize the manufacturing cost while ensuring the necessary functions of the product. The following are the principles that hydraulic system design should follow.
(l) Meet customer requirements for product functions and services.
Construction machinery is not only a product, but also includes after-sales service that supports these functions. Therefore, the design process should not only aim at the different functional characteristics of the product, but also make the product easy to maintain.
(2) Comply with national industrial development policies and relevant laws and regulations.
(3) Adhere to the principles of standardization, generalization and serialization.
(4) Meet the social requirements for environmental protection.
(5) Comply with the laws of technological innovation and attach importance to the protection of intellectual property rights.
(6) Combine the actual technological level and production capacity of the enterprise, and emphasize the combination of design, craft and production. The hydraulic system product design is not only a pattern design, but also a process design and production design.
(l) Choose standard parts or remanufactured parts with standard parts or purchased parts.
(2) When designing splines and threads, they should be easy to use standard tools and measuring tools for processing and testing.
(3) For the design of large structural parts and steel castings, try to use fasteners that do not require tapping, such as welding nut plates instead of screw holes. When designing large-scale workpieces, it should be considered to weld the nut plates with the holes already formed.
(4) Try to use existing mature parts or components, or mature structures and process methods to serialize and generalize products. This method can speed up the design speed, shorten the trial production cycle of new product prototypes, and occupy the market as soon as possible.
(5) Establish the enterprise's own standard parts library to speed up the progress of design trial production. All the same or similar parts that have been used in the main products for more than three months are selected as factory standard parts.
(6) As far as possible, choose a uniform taper, a uniform plate thickness and a uniform grade of steel casting materials.
(7) Improve the design from the shape and structure.
1）Minimize parts.
2）Combine several parts into one part, such as changing welded parts to stamping parts to reduce the number of parts.
3）Design the parts into a symmetrical structure.
4）Design parts with similar shapes used in several product applications into universal parts.
5）Simplify the shape of each part, improve the shape of the part, and reduce the curved shape.
（8）Improve process plan
1）Reduce unnecessary cutting processing, especially unnecessary cutting processing of clamping reference surface.
2）On the premise of ensuring the reliable and reasonable use of parts, reduce the requirements of dimensional tolerances, surface roughness, shape and position tolerances and other processing accuracy levels.
3）Reduce the bending shape and complexity of the parts, reduce the scrap rate and manufacturing costs.
4）When cutting the length of section steel, try to change the flame cutting to section steel cutting. The flame cutting of general sheets is changed to cutting with a shearing machine.
The key for hydraulic system product designers to improve design quality is to consciously and actively learn the knowledge related to the production process and processing technology, and to master design skills. You can design better hydraulic system products by following the hydraulic system design principles and skills mentioned above.
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