CNC Prototyping finishing surface processing China is still the main grinding and polishing, but for CNC Prototyping complex cavity and some slit surface finishing, the traditional machining method has been incompetent, must use other process measures, such as electricity Chemical or electrochemical mechanical finishing technology.
CNC Prototyping finishing surface treatment technology, the main can be divided into two parts: the traditional finishing technology and non-traditional finishing technology. The traditional finishing technology is mainly based on hand-polished polishing and now developed mechanical finishing; non-traditional finishing mainly includes chemical polishing, electrochemical polishing, electrolytic grinding, electrochemical mechanical finishing, ultrasonic processing, magnetorheological Polishing, laser polishing technology and EDM polishing.
1, hand grinding and polishing
The method does not need special equipment, adaptability is relatively strong, mainly depends on the operator's experience in technical level, low efficiency (about the entire CNC Prototyping cycle of 1/3), and the workers labor intensity, quality instability, constraints China's CNC Prototyping processing to a higher level of development. But the current socio-economic and technological development, for the time being can not completely eliminate this processing means.
2, digital Shouban polishing machine
This kind of polishing tool adopts digital control, digital display and control process parameters, with the whole grinding head and abrasive, semi-automatic polishing, with small size, easy to use, stable quality, good repeatability. Applications: a, materials: all kinds of Shouban materials, including cast steel, forged steel, aluminum and zinc alloy. b, hand plate surface size: 100 × 100 (mm) -1,500 × 3,000 (mm).
3, ultrasonic Shouban polishing machine
The polishing tool uses high-frequency EDM pulse power and ultrasonic vibration grinding principle of polishing. It can complete the general polishing tools (electric grinding soft shaft, etc.) difficult to reach into the narrow slot, slit, side, angle and other twists and turns of the polishing, CNC Prototyping polishing does not collapse edges and corners, does not affect the accuracy of CNC Prototyping. The use of the tool for polishing, can be quickly on the rough surface shaping polishing, from the workpiece shape, material hardness limit, the original surface roughness is not required, the effect is relatively high. In the case of
4, with high-speed milling technology as a Shouban semi-finishing and finishing means
High-speed milling of CNC Prototyping surface can be compared to EDM processing to save 25% to 60% of the working hours; high-speed milling surface quality is good, to avoid the NC prototype processing may occur on the surface of fine pattern; high-speed milling can process 45 ~ 60HRC hard surface , Fine milling surface roughness up to Ra = 0.63mm, reduce the manual polishing time; save CNC Prototyping processing electrode manufacturing links, significantly shorten the molding cycle.
5, electrochemical and electrochemical mechanical finishing
Electrochemical and its composite finishing technology is mainly on the metal workpiece electrochemical anodic dissolution principle to CNC Prototyping processing, belonging to the ion removal. And because it is non-contact processing, no processing deformation layer, metamorphic layer and residual stress; CNC Prototyping tool without wear, can be long-term application; no flash and burr. The use of electrochemical mechanical prototype processing than the general super-finishing life can be increased more than 5 times.