Large Continuous DLP 3D Printer manufacturers take you to understand the factors that affect the accuracy of 3D printing


The manufacturer of Large Continuous DLP 3D Printer tells you that with the gradual popularization of 3D printing technology, more and more ordinary users can get in touch with 3D printing technology and understand the charm of 3D printing. However, although the prospect is good, people have to pay attention to the printing accuracy. So, what factors will affect the printing accuracy of 3D printers? Today, taking fused deposition modeling technology as an example, I will discuss with you several factors that affect the accuracy of 3D printing products, hoping to be helpful to all 3D printing enthusiasts.

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The manufacturer of Large Continuous DLP 3D Printer tells you that fused deposition modeling technology is the mainstream technology adopted by desktop 3D printers at present. And paraffin as the main material. In fact, in the process of 3D printing, there are many factors that affect the accuracy of the finished product, such as the printer's own accuracy, printing temperature, printing speed, materials, etc. Let's look at them one by one.
1. The accuracy of the printer itself
In fact, this point has been decided at the beginning of the purchase of the 3D printer, so you must see clearly before purchasing the printer. Next, the manufacturing and assembly accuracy of the 3D printer itself and the vibration during the work process will affect its printing accuracy. Unlike ordinary printers that can only move in X and Y directions, 3D printers also increase the longitudinal movement of Z axis in addition to X and Y. Any slight movement is the mutual friction force between parts, and there will always be slight deviation. The manufacturer of the Large Continuous DLP 3D Printer tells you that for example, the XY plane error, the frame structure of the printer and the rigidity of the materials used will have a great impact on its stability. For those professional users, choosing a heavier printing load and more metal materials will help the stability and durability of the printer.
In addition, the diameter of the nozzle also determines the width of the extruded filament, which affects the fineness of the finished product. You should know that 3D printing constructs objects by printing layer by layer, so the layer thickness setting will also affect the roughness of the finished product: choose a large diameter nozzle and set the layer thickness thicker. Although the printing speed is faster, the finished product will be rough. Relatively rough; otherwise, the printing speed is slow, but the finished product is finer.
2. Printing temperature
The printing temperature we are talking about here actually includes the temperature of the nozzle and the temperature of the molding chamber. Among them, the temperature of the nozzle determines the bonding performance, accumulation performance, filament flow rate and extrusion filament width of the material. Therefore, the nozzle temperature can neither be too low nor too high. If it is too low, the viscosity of the material will increase and the extrusion speed will slow down; if it is too high, the material will tend to be liquid, the viscosity coefficient will become smaller and the fluidity will be enhanced, and the extrusion will be too fast to form a precisely controllable filament. Therefore, when setting the temperature of the nozzle, it should be selected within a certain range according to the properties of the selected wire to ensure that the extruded wire is in a molten flow state.
The temperature of the forming room will affect the thermal stress of the formed part. Although high temperature helps to reduce thermal stress, the surface of the part is easy to wrinkle; the manufacturer of Large Continuous DLP 3D Printer tells you that the temperature is too low, and the filament extruded from the nozzle will suddenly Cold will increase the thermal stress of formed parts, which will easily cause warping and deformation of parts. In order to form smoothly, when printing ABS, it is generally better to keep the temperature of the forming room at 55 degrees Celsius, while PLA needs to keep ventilation and heat dissipation as much as possible, and it is not suitable for heat preservation.
3. Layer thickness and compensation amount
The so-called layer thickness refers to the layer thickness when slicing. Each layer has a certain thickness, which will produce visible step lines on the surface of the formed product. The higher the layer thickness, the more obvious the texture, which will affect the size of the formed entity. error and the roughness of the surface. The manufacturer of Large Continuous DLP 3D Printer tells you that for FDM technology, this is a principle error that cannot completely eliminate the step pattern, but it can be improved by setting a smaller layer thickness.
The compensation amount refers to the distance between the actual machining contour lines of the finished part. For those models that require high precision, the general modeling should give compensation as much as possible, especially the inner hole. The setting of the compensation amount value and the extrusion It is related to the diameter of the filament and the performance of the 3D printer, so you have to explore it slowly.
4. Extrusion speed and filling speed
The manufacturer of the Large Continuous DLP 3D Printer tells you that in the case of a reasonable matching of the filling speed, the greater the extrusion speed, the larger the cross-sectional width of the extruded wire; when the extrusion speed increases to a certain value, the extruded wire may adhere On the outer conical surface of the nozzle, it scratches the outer surface of the model and affects the appearance. When the filling speed is faster than the extrusion speed, the material will be broken due to insufficient filling, making it difficult to form; on the contrary, the filling speed is slower than the extrusion speed, and the fuse is easy to accumulate on the nozzle, which makes the material distribution on the forming surface uneven. Uniform, pimples appear on the surface, affecting the printing quality. Therefore, the filling speed and extrusion speed should be within a reasonable range.
The manufacturer of Large Continuous DLP 3D Printer tells you that if you want to make exquisite 3D printing products, you need to have a comprehensive understanding of 3D printing technology and equipment. By mastering various factors that affect the accuracy of 3D printing, we can better avoid failures, improve the cost performance of 3D printing, and achieve better economic value.

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