CNC production of prototype process decomposition of PVC car lampshade

The prototype can examine the appearance and structure, which reflects the designer's creativity in the form of physical objects. On the premise that there is no mold opening, one or more of the product appearance drawings or structural drawings are made to test the mold.

CNC machining (Acrylic) The superiority of the prototype:

general machine tool processing can not solve the problem of automatic machining of complex parts. CNC machining, because of its strong adaptability, high machining accuracy, high production efficiency and modernization of production management, is applied to prototype processing, the prototype can reflect the information expressed by the drawings very accurately, and save money, the surface quality is very high, and the production efficiency circle is improved.

The material of the prototype is rich and diverse, and the material of SLA laser rapid molding is mainly photosensitive resin. In the vacuum injection type, the silicone mold is mainly used in the mold replication method. The materials of CNC machining method are divided into two categories: metal and non-metal. Non-metals mainly refer to some engineering materials, such as ABS, PC, PP, POM, PA, MMA, electric wood and wood generation.

CNC machining materials are usually plates with a standard thickness. Generally, plates with a thickness of more than 100MM are difficult to order, the 150MM thickness of the plate must be customized. Therefore, the price of the plate in the prototype processing is not the same, the price of the special thickness of the plate is different.

(Acrylic) It is written by English Acrylics, and the pressure Board is composed of methyl acid methyl ester monomer (MMA)Polymerization, that is, poly (MMA (1)Organic glass plate. High transparency of acrylic (Light transmittance of 92%) With good weather resistance, good surface hardness and gloss, and large processing plasticity. Usually, in the prototype model (Alec) It is suitable for making prototype models with high transparency such as lights and lenses.

automobile lampshade process scheme

1. Blanking

Since the lampshade sample is a single-piece, small-batch product. The size of the blank is different, and it needs to be from the large piece of MMA (Acrylic)Saw under the board.

2, front processing

a, clamping positioning

ordinary machine tool clamping is generally through flat-mouth pliers or machine tools special fixture, however, the material of the workpiece in this paper is acrylic and the hardness is softer. If the workpiece is deformed or damaged by ordinary methods. Therefore, when designing the CNC milling machine, an ABS board is placed on the original Workbench. Pass 502 glue (Acrylic) The workpiece and the ABS Workbench are strongly glued together. Play the role of clamping positioning.

B, rough machining of the front

The front of the lampshade can be regarded as a cavity-like part, so it is processed by digging.

c, front half finishing

Front half finishing tools use rough cutting tools, and the cutting road uses curved parallel finishing knife Road.

d, front finishing

Front finishing is divided into 2 steps: ① for>The surface of 800 is finished with high profile. (2) for <800 of surfaces are processed in parallel using surfaces.

e, local finishing

Generally, the prototype model can be locally processed with two knives such as high-profile finishing and surface parallel finishing.

f, plaster shape

gypsum shape has three effects. First, the plaster is filled on the front, and the structural strength can be effectively enhanced after solidification; The second is the milling plane, which can be used as the datum plane when the opposite side is positioned; The third is the milling profile, and the milling profile is a clip for r on the reverse side. . . . . .

More prototyping processes can be logged into the website of Shenzhen tuowei model Technology Co. , Ltd. http://www . Sztuowei. Com to understand.

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