Rapid tooling technology is a new mold manufacturing technology developed on the basis of rapid prototyping technology, but it still needs to be improved and studied continuously. Next, Shandong rapid prototyping manufacturer will talk about the two methods of rapid tooling manufacturing
There are two methods of rapid tooling manufacturing:
One is indirect mold making, which uses rapid prototyping as a model and adopts a certain process to manufacture the mold;
The other is direct mold making. Direct mold making is to directly manufacture the mold on the rapid prototyping manufacturing equipment, that is, design the 3D solid model of the mold according to the shape of the product or convert the part model into the cavity model, select special materials, and use the rapid prototyping technology to manufacture the mold.
In rapid prototyping technology, it is the premise to produce rapid prototyping with high dimensional accuracy, but most of the prototypes obtained by rapid prototyping are not directly molded due to the limitations of materials and molding technology. The soft mold can be formed by casting wax, silicone rubber, epoxy resin, polyurethane and other soft materials with rapid prototyping master mold.
Silicone rubber mold manufacturing process is a popular rapid mold manufacturing method. Due to the good flexibility and elasticity of silicone rubber mold, it can make parts with complex structure, fine pattern, mold slope, even reverse draft angle and deep groove, short manufacturing cycle and high product quality, so it has attracted much attention. Due to the different shapes and sizes of parts, the requirements for the strength of silicone rubber molds are also different, so the molding methods are also different.
The arc spraying rapid mold making takes the prototype as the sample mold. The molten metal at the melting point is fully atomized and sprayed onto the sample mold surface at a certain speed to form the mold cavity surface. The backing is filled with composite materials. The shell is supported by aluminum filled epoxy resin or silicone rubber. The shell is separated from the prototype to obtain a precise mold, and the pouring system and cooling system are added to form the injection mold together with the mold base.
Resin composite mold manufacturing is to composite liquid epoxy resin with organic or inorganic materials as the matrix material, and then pour the mold based on the prototype. The technological process is: making prototype - surface treatment - surface design, making mold frame - selection, design parting surface - brushing release agent on the prototype surface and parting surface, gel coat resin - casting concave mold.
Silicone - ceramic rubber mold. It can obtain precise ceramic mold through coating transfer and cast aluminum or ferrous metal. There are many ways to obtain rapid tooling by rapid precision casting. It uses the stereo lithography process to obtain the semi-hollow prototype of the part film, and then hangs slurry on the outer surface of the prototype to obtain a ceramic layer with a certain thickness and size, which is tightly wrapped around the outside of the prototype, and then put it into a high-temperature furnace to burn the semi-hollow prototype.
The advantage of this method is that the wax mold in the original precision casting is replaced by the prototype, which greatly improves the precision of the casting prototype and greatly accelerates the manufacturing speed. If you have any questions or needs about this, please come to our website http://www.the7streamsdream.com Ask!