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Several Common Handboard Processing Methods
A prototype is sometimes referred to as the first version, as the name suggests, based on the appearance drawings and structure of the product before mass production
A small number of samples are usually made on the drawing first, which can be used to check the appearance or structural rationality of the product as a functional template.
So which industries are prototype factories or prototype companies precise users? Using the big data tools of Webmaster's Home, we search for templates
This keyword has been found to be in high demand in industries such as automobiles, home appliances, appliances, toys, medical devices, and technology. For these
The commonly used methods for manufacturing hand boards and rapid molds in the industry in China include CNC machining, SLA, SLS, SLM, FDM, vacuum lamination
We will compare low-pressure injection and sheet metal production in terms of definition, materials used, software usage, machinable parts, advantages and disadvantages
Several hand board processing methods.
1. CNC machining
CNC machining is a computer numerical control machine tool that uses a programmed program to control the cutting path to cut an entire sheet metal. It is currently the most widely used in China
A wide range of methods for making hand boards, with complex operation methods, require operators to have rich experience.
Mainly used for the processing of plastic and metal sheets, it can be cut on all sheets in the market and is a material reduction technology that can only produce products with
A rounded corner with a certain degree of curvature cannot be directly machined into an inner right angle, which needs to be achieved through processes such as wire cutting/spark cutting.
SLA, also known as stereolithography, is a type of 3D printing technology that uses resin materials and specific wavelengths and intensities of ultraviolet radiation
The laser is focused on the surface of the photosensitive resin, causing it to solidify layer by layer, and finally layer by layer to form a three-dimensional solid.
All 3D printing is an additive technology, a process from 0 to 1. SLA is the earliest rapid prototyping manufacturing process with high maturity,
Prototypes are directly made from CAD digital models, with fast processing speed, short product production cycle, no need for cutting tools and molds, and can be processed
Prototypes and molds with complex structural shapes or difficult to shape using traditional methods.
SLA equipment is expensive and has high requirements for the factory environment. The strength, stiffness, and heat resistance of the mold after molding are limited, which is not conducive to long-term storage.
SLS, also known as selective laser melting, is a type of 3D printing technology that currently uses mature process materials such as wax powder and plastic powder. Laser beam alignment during printing
The flat powder is selectively sintered, with one layer completing the descent of the powder box, followed by another layer of powder laser sintering, all of which are sintered and the powder box is taken out
By removing excess powder, a sintered part can be obtained.
The prototype molds made by SLS have high strength and good toughness, and can be used to make bearings, gears, precision components, and electronic components without the need for support,
High utilization rate of materials; But it is contaminated during the prototype processing; The speed is relatively slow.
SLM, also known as selective laser melting and forming technology, is currently the most common technology in metal 3D printing and forming, which uses fine focusing of light spots for rapid processing
Melt preset metal powder to directly obtain parts of any shape and complete metallurgical bonding, resulting in a production density of up to
In the process of SLM making prototype molds, due to the complexity of the parts, it is necessary to print support materials, and after the parts are completed, the support needs to be removed,
And the surface of the parts will be treated, so the production time will be longer and the cost will be higher.
FDM, also known as melt deposition molding, is typically made of thermoplastic materials such as wax, ABS, nylon, etc., supplied in a filamentous form. Materials in
The nozzle is heated and melted inside. The nozzle moves along the cross-sectional profile and filling trajectory of the part, while extruding the melted material, causing it to quickly solidify,
And coagulate with surrounding materials.
In the process of making prototype molds using FDM, the price is relatively low, the materials are safe and harmless, there is no mold fee, and multiple colors can be produced,
But cannot print hollow products.
The hand board mold processed by FDM has obvious stripes and relatively low forming accuracy, requiring the design and production of supporting structures, resulting in a longer forming time.
6. Vacuum replica
Vacuum replica is the production of silicone molds using product prototypes (such as SLA or prototype processing) in a vacuum state, and then in a vacuum state
Using PU material for pouring, a replica identical to the product prototype was cloned.
Vacuum lamination is currently the most commonly used prototype replication technology worldwide; Technology can be applied to changing the material of product prototypes and assembling prototypes
Or carry out small-scale production of products to meet the needs of performance testing, market promotion, inspection, approval, etc. during the product development process;
Choosing different PU materials can replicate rubber parts, transparent parts, high-temperature resistant parts, etc. Ordinary PU materials are more brittle, tough, and resistant
The high temperature is relatively poor.
7. Low pressure perfusion
Low pressure injection molding, also known as low pressure reaction injection molding, is a new process applied in the production of rapid molded products. It combines two-component polyurethane materials
After mixing, it is injected into the rapid mold at room temperature and low pressure, and undergoes chemical and physical processes such as material polymerization, cross-linking, and curing
Cheng formed a product.
Low pressure injection molding has the advantages of high efficiency, short production cycle, simple process, and low cost, making it suitable for product development
Small batch trial production during the process, as well as the production of small batch, structurally simple covering parts and large thick and uneven wall thickness products.
8. Sheet metal production
Sheet metal production refers to the processing of metal sheets such as steel plates, aluminum plates, copper plates, etc., including laser cutting, stamping, bending, etc. Sheet metal processing
The significant characteristic of the raw materials is that the thickness of the same part is consistent.
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