Views: 17 Author: Site Editor Publish Time: 2021-07-08 Origin: Site
CNC processing/cnc prototype/cnc rapid prototyping/cnc prototype (professional high-precision CNC CNC machine tool processing, CNC prototype production and processing)
The CNC prototype model is a product of modern industry. It integrates advanced technologies such as computer-aided design (CAD), computer-aided manufacturing (CAM) and computer digital control (CNC). Material is cut and excavated. After the workpiece is clamped once, the digital control system can control the machine tool to automatically select and replace the tools according to different procedures, automatically change the spindle speed, feed, and the motion path of the tool relative to the workpiece and other auxiliary functions to complete several surfaces of the workpiece in sequence. In the multi-process processing, the entire processing process is automatically controlled by the program, and is not affected by the operator's human factors.
Machining Center is abbreviated as MC, which is a high-efficiency automatic machine tool for processing complex-shaped workpieces composed of mechanical equipment and numerical control system. The processing center is also called the computer gong. The machining center is equipped with a tool magazine and has an automatic tool change function. It is a CNC machine tool that performs multi-process processing after clamping the workpiece once. The machining center is a highly mechatronic product. After the workpiece is clamped, the CNC system can control the machine tool to automatically select and change tools according to different procedures, automatically set the tool, automatically change the spindle speed, feed, etc., and can continuously complete drilling, boring, and Various processes such as milling, reaming, and tapping. As a result, it greatly reduces the time for workpiece clamping, measurement and machine tool adjustment and other auxiliary processes. The processing shape is more complicated, the accuracy requirements are higher, and the parts with frequent replacement of varieties have good economic effects.
CNC prototype processing method: Generally, the workpiece is processed on the upper and lower sides. Under special circumstances, the workpiece will be processed on three, four, five or six sides. In the process of processing, we will retain the glue in the surrounding basket for the product (workpiece), use the side basket to pull the bone to fix the product (workpiece), pour the plaster to position the product (workpiece), and the product (workpiece) and CNC during processing There will be no adhesive effect on the work surface, which better guarantees that the processed product (workpiece) will not be deformed and the material level of the product (workpiece) will be accurate. In addition, gypsum is an indispensable auxiliary material in prototype processing. The cavity surface has been hollowed out during the reversal process, and the wall thickness of the product is generally thin, so thin-wall jitter will occur in the process, which has a great impact on the appearance of the product. After the plaster is filled, it is equivalent to adding a support, which prevents thin-wall jitter during processing and ensures the processing effect.
Selection of plastic materials for CNC prototype processing: ABS (imported, domestically produced, black, flame retardant, etc.), POM (Saigang), PMMA (acrylic), PA (nylon), PC, PP, bakelite, metal material: aluminum alloy , Magnesium alloy, zinc alloy, copper and so on.
The superiority of CNC prototype model: fast processing speed, low cost, and high processing accuracy can be achieved. Moreover, the wide selection of materials can ensure the consistency of the materials of the prototype model and the materials of the mass-produced parts. The prototype has a strong sense of reality, and the surface quality can reach a very high level. After subsequent processing such as grinding, polishing, sandblasting, painting, screen printing, UV, electroplating, etc., the production effect is completely comparable to the products produced by the mold, or even better. high.
Shenzhen Kaiao Mould Technology Co., Ltd. (formerly Shenzhen Yinhua Company) has 17 years of experience in prototype rapid prototyping and has been recognized by the Ministry of Science and Technology as a national rapid prototyping research and application service center and a national CAD application engineering demonstration company. Shenzhen High-tech Enterprise, Shenzhen CAD Technical Consulting Service Center. The current main CNC machining equipment is the vertical high-speed machining center imported from FANUC of Japan. The maximum working stroke is X1200mm\Y600mm\Z570mm, the maximum spindle speed is 24000 rpm, the positioning accuracy is 0.010/300mm, and the machining accuracy can reach ±0.05mm. It is especially suitable for the realization of structural and functional prototypes with high precision, high strength and large size requirements.
Prototypes are usually required for products that have just been developed or designed. Prototyping is the first step to verify the feasibility of the product. It is the most direct and effective way to find out the defects, deficiencies, and drawbacks of the designed product, so as to improve the defects. , Until you can't find the deficiencies in individual prototypes. At this point, usually a small amount of trial production is needed to find out that the batch is not enough to improve.
According to production method：
Prototypes can be divided into manual and numerical control prototypes according to the production methods:
(1) Manual prototype: The main workload is done by hand.
(2) Numerical Control Prototyping: The main workload is completed by CNC machine tools, and depending on the equipment used, it can be divided into laser rapid prototyping (RP, Rapid Prototyping) prototypes and machining center (CNC) prototypes.
A: RP prototype: mainly produced by laser rapid prototyping technology.
B: CNC prototype: mainly produced by machining center.
RP prototypes have their own advantages compared with CNC prototypes:
The advantage of RP prototype is mainly in its rapidity, but it is mainly formed by accumulation technology, so RP prototype is generally relatively rough, and there are certain requirements on the wall thickness of the product, for example, the wall thickness is too thin to be produced.
The advantage of CNC prototype is that it can accurately reflect the information expressed in the drawings, and the surface quality of CNC prototype is high, especially after the surface spraying and silk printing are completed, it is even more glamorous than the product produced after the mold is opened. Therefore, CNC prototype manufacturing has increasingly become the mainstream of prototype manufacturing.