Prototype production is to verify the feasibility of the product without opening the mold. Generally, the sample size of the prototype is small, the production cycle is short, the manpower and material resources are wasted less, and the product design defects are found and improved quickly, laying a solid foundation for product completion and mass production. Next, Shandong rapid prototyping manufacturers will talk about two commonly used prototype rapid prototyping methods.
1. Laser rapid prototyping (SLA/SLS)
Laser rapid prototyping can be divided into SLA and SLS according to different raw materials.
SLA is a process based on 3D engraving principle, also known as selective curing of photosensitive resin. It is an early rapid prototyping technology. The process is as follows: When the resin tank is filled with wavy photosensitive resin, it will rapidly solidify under the irradiation of ultraviolet laser beam. At the beginning of the forming process, the height of the elevating table at the next cross section layer under the wave front.
The focused laser beam, under the control of a computer, scans along the liquid surface in accordance with the following requirements: it is used to create a cross sectional profile of the resin in the scanning area and cure it to obtain a resin sheet with a cross sectional profile.
Then the workbench lowers the height of the film layer, and the cured resin film is covered with a new layer of liquid resin for the second layer of laser scanning curing. The newly solidified layer is the previously firmly adhered layer A. Repeat this operation until the whole product is formed. After that, cleaning, support, secondary curing and surface treatment are completed.
The selective curing rapid prototyping technology of photosensitive resin is applicable to the production of small and medium-sized workpieces, which can directly obtain resin or similar engineering plastic products. SLA rapid prototyping has excellent surface quality, high system resolution and high molding accuracy.
The processing method of SLS is similar to SLA technology, except that powder raw materials are used instead of wave state photosensitive polymers to apply constant scanning speed and energy to the powder materials. In the forming process, laser parameters, powder characteristics and sintering atmosphere are important factors affecting the sintering quality.
SLS rapid prototyping can create difficult handboards, and can use a variety of raw materials, such as most engineering plastics, waxes, metals, and ceramics. The construction of parts is fast, and no post correction is required for parts. No design and construction support.
2. CNC rapid prototyping
CNC is widely used in the machining industry, and its technology is relatively mature. In the processing of the hand board, the effect and precision are very good, so we should first consider how to process the hand board.
For plastic processing materials, ABS is off white/black/transparent; PMMA acrylic (colorless transparent/colored transparent/pearl luster/embossed) bakelite (opaque dark, brown/black) PC, PA nylon, PA+glass fiber reinforced plastic (POM) including) white/black PP milky white; Metal materials include aluminum alloy, copper (purple luster), stainless steel, titanium alloy, magnesium alloy and zinc alloy.
The surface treatment methods of CNC hand lathes are various, including polishing, spraying, painting, polishing, screen printing, electroplating, oxidation, laser engraving, brewing and UV, and their effects can even compare with those of products produced by molds. Outside, assembly and functional verification can achieve the purpose of customer planning verification. CNC can create a piece that can truly reflect your planning purpose.
The two commonly used prototype rapid prototyping methods have been explained. You can go to the website at any time for any relevant content or needs http://www.szdgnt.cn Come to contact us for consultation!