Hand board making is to verify the feasibility of the product without opening the mold. Generally, the sample size of the hand board is small, the production cycle is short, the waste of human and material resources is less, and the speed of product design defect discovery and improvement is fast, which lays a solid foundation for product completion and mass production. So what can be divided into fast hand board making 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 the principle of 3D engraving, also known as selective curing of resin. It is Z's earliest rapid prototyping technology. The process is as follows: when the resin tank is filled with wavy resin, it will solidify rapidly under the irradiation of ultraviolet laser beam. At the beginning of the forming process, the lifting table is at the height of the next cross-sectional layer of the wave front. The focused laser beam is scanned along the liquid surface under the control of the computer according to the following requirements: it is used to create the cross-sectional profile of the resin in the scanning area and cure to obtain the resin sheet with cross-sectional profile. Then the workbench reduces the height of the film layer, and the cured resin film is covered with a layer of new liquid resin for two-layer laser scanning curing. The newly cured layer is the layer a firmly adhered before. Repeat this operation until the whole product is formed. After Z, complete cleaning, support, secondary curing and surface treatment.
Resin selective curing rapid prototyping technology is suitable for the production of small and medium-sized workpieces, and can directly obtain resin or similar engineering plastic products. SLA rapid prototyping has excellent surface quality, high system resolution and high molding accuracy.
Hand board making
The processing method of SLS is similar to SLA technology, except that powder raw materials are used instead of wave polymers to apply constant scanning speed and energy to 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 hand boards, and can use a variety of raw materials, such as most engineering plastics, wax, metal and ceramics. The construction speed of parts is fast, and there is no need for post correction of parts. No design and construction support.
2. CNC rapid prototyping
CNC is widely used in the machining industry, and the technology is relatively mature. In the processing of the hand board, the effect and accuracy are very good, so we must first consider how to process the hand board.
對于塑料加工材料，ABS 灰白色/黑色/透明；PMMA 亞克力（無色透明/有色透明/珍珠光澤/壓花） 電木（不透明深色、棕色/黑色） PC、PA 尼龍、PA + 玻璃纖維鋼（ POM) 包括) 白色/黑色 PP 乳白色；金屬材料包括鋁合金、銅（紫紅色光澤）、不銹鋼、鈦??合金、鎂合金、鋅合金。
For plastic processing materials, ABS gray 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) white / Black PP milky white; Metal materials include aluminum alloy, copper (purplish red luster), stainless steel, titanium?? Alloy, magnesium alloy, zinc alloy.
The surface treatment methods of CNC hand board machine are various, including grinding, ash spraying, painting, polishing, screen printing, electroplating, oxidation, laser engraving, brewing and UV. Its effect can even be compared with the products produced by the mold. In terms of appearance, assembly and function verification, it can achieve the purpose of customer planning and verification. CNC can make a workpiece that can truly reflect your planning purpose.
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