Since 2012, after 3D printing technology has become popular in domestic and foreign markets, the development direction of 3D printing technology has also been a hot topic. And 3d printing materials are also limiting the development direction of 3d printing technology. Many 3d printing experts have tried to change this factor and have made small breakthroughs. Common 3D printing materials include resin, plastic, ceramic, metal and other 3D printing materials for 3D printing. Therefore, they are widely used in aerospace, medical, industrial design and other fields to analyze how to reduce the extra caused by 3D printing. Manufacturing costs, and how to highlight its advantages in reducing enterprise manufacturing costs and improving overall benefits. Several methods for saving consumables for 3D printers are detailed below.
1. Optimize the 3D printing model structure:
Well-designed 3D printed parts follow many principles similar to injection molding, such as: use gradual transitions between adjacent surfaces; avoid huge differences between cross-sectional area and part volume; avoid occurrences on finished parts Sharp corners of residual stress; unsupported thin-walled structures cannot be too high, otherwise warping will occur.
You should know that typical 3D printed parts often have bionic designs, such as honeycomb structures or complex lattice structures. Don't be afraid to use this structure in the design, as long as they can create lighter and stronger parts. There is no need to avoid using a hole-like structure in the design, because drilling holes in parts through traditional manufacturing methods invisibly increases the waste of materials, which leads to increased costs.
It should be noted that when additive manufacturing, especially when using laser melting metal 3D technology to make round holes, it is necessary to comprehensively consider whether to add a hole support structure and the possible deformation of the lower surface. In some cases, a teardrop or hexagonal hole-shaped structure can be considered as a better design method instead of round holes.
Comprehensively consider the manufacturing method of parts in mass production. We say that 3D printing technology can realize free modeling and bring a lot of room for part design, such as manufacturing parts with many hole structures. In fact, many companies have realized that 3D printing technology is capable of small batch production of parts, but when mass production is required, they still need to consider converting to traditional processes such as machining and casting. Therefore, in this case, the designer needs to comprehensively consider what manufacturing process will be used when the part is put into mass production in the future at the beginning of the design, and whether the design plan can also be successfully realized.
Reduce the secondary operations after printing. Certain 3D printing processes need to add a support structure to the printed object to prevent it from curling or warping. For example, in stereolithography (SLA) 3D printing, it is necessary to add a supporting structure to the printed object. The metal support structure formed by printing needs to be removed by machining or other methods after the printing is completed, and the plastic support structure is removed by means such as a handheld sander. Either way, it will increase the cost and prolong the manufacturing cycle. Therefore, at the beginning of the design, it is necessary to consider changing the design or the placement of parts to avoid adding support structures to the parts.
Observe the tolerance. When 3D printing metal, in order to meet the tolerance requirements of metal parts, sometimes it is necessary to use secondary processing techniques such as mechanical processing. However, excessive pursuit of tolerance requirements will affect the design and manufacturing of 3D printed parts, such as excessive The pursuit of precision increases the number of printing layers, thereby increasing printing time and printing costs. Therefore, we should adopt appropriate design strategies and sometimes reduce the use of post-printing processes.