1. Material difference
3D printing materials mainly include liquid resin (SLA), nylon powder (SLS), metal powder (SLM), gypsum powder (full color printing), sandstone powder (full color printing), wire (DFM), sheet (LOM), etc. Essence Liquid resin, nylon powder and metal powder occupy the vast majority of industrial 3D printed markets.
All materials used in CNC machines are plates, that is, plates. Make process by measuring the length, width and height+loss of the parts, and cutting the corresponding size plate for processing.
Plate
The selection of CNC processing materials is greater than 3D printing. Generally speaking, CNC can process hardware and plastic boards, and the density of molding components is better than 3D printing.
2. The difference between parts is caused by the principle of molding
Because 3D printing is a additive manufacturing, the principle is to cut the model into N layers more, and then accumulate in order/point in order, just like the building blocks. Therefore, 3D printing can effectively process and produce complicated parts, such as hollow parts, and CNC is difficult to achieve processing of hollow parts.
CNC processing is a kind of reduced material manufacturing. Through various high -speed tools, the parts required for cutting according to the programming knife path. Therefore, the processing of CNC machines can only process a certain curved rounded corner, and cannot directly process the inner right angles. It should be achieved through the process of cutting/spark. There is no problem with the processing of the external straight angle CNC. Therefore, the parts with inner right angles can consider choosing 3D printing and production. There are curved surfaces. If the surface area of the parts is large, it is recommended to choose 3D printing. CNC processing surfaces are time -consuming. In addition, if programming and operators do not have enough experience, it is easy to leave obvious lines on the parts.
No wonder some people say that 3D printing is piled with cake powder into cakes. CNC cuts big cakes into small cakes, which is really easy to understand.
3. Differences on operating software
Most 3D printing software is easy to operate. Even foreigners can be skilled in slice software within a day or two under professional guidance. Because the optimization of slice software is very simple, support can be generated automatically. This is why 3D printing can popularize to individual users.
Sliced effect
CNC programming software is much more complicated and requires professionals to operate. Zero -based people usually need to learn about half a year. In addition, a CNC operator is needed to operate the CNC machine. UG, MasterCam, Cimatron and domestic sculptures. Learning these software is still difficult.
UG operation page.
Because the programming is very complicated, one part can have a variety of CNC processing schemes, and 3D printing will only have a small part of the processing time consumable, which is relatively objective.
4. Differences in later processing
After 3D printing parts, there are not many choices, generally polishing, fuel injection, burrs, dyeing, etc.
In addition to polishing, fuel injection, removal of burrs, plating, silk printing, transplanting, metal oxidation, radiac, sandblasting, etc.
There are successive smells and professional surgical industries. There are advantages and disadvantages of CNC processing and 3D printing. Choosing the right processing process has a vital impact on your handboard engineering.
