CNC milling is one of the most famous rapid prototyping methods. Despite the fierce competition of 3D printing, most designers still like it. This may be due to the vitality it provides. We use CNC milling to process a series of projects and materials. This article will introduce the top machining projects that we can use CNC milling.
A common machining project involves the use of plastics as raw materials. Plastic is famous because we can use it in many situations. For example, we use plastic ABS materials on medical devices and use them as lids. The covers on the headphones and mobile phones may be top or bottom. We can find it in daily household products because it is easy to be processed by CNC milling and is cheap.
It is fuzzy to say that NC milling is cheap, which allows me to explain this problem. In order to keep costs low, our experts usually choose to develop parts separately first. Then we can easily assemble the parts without making a fuss. In this case, we use glue to stick the parts. Acetone is an ideal solvent for bonding thermoplastic materials. We first make sure that the two parts are firmly in place. Then we continue to apply glue on the surface of the gap. The agent usually diffuses slowly to the joint surface. Gradually, the joint surface becomes stronger and there is little risk of weakening later.
Abs-pv is another common material we use when machining projects through CNC milling. Its cost is slightly higher than ABS, but we have no difference in its processing. Its main advantage is that the joint is not clear after the parts are bonded. In addition, we can spray its surface to enhance its beauty.
Automobile machining is one of the fastest developing fields in the market. From time to time, cutting and machining tools are constantly updated. This is to maintain first-class quality when machining automotive parts through the CNC milling process. One of the updates is to add diamond processing technology to 5-axis precision milling. It enables the machine to handle optical details and complex shapes.
More and more diamond tools are used in the processing of automotive optical parts. It allows us to obtain clearer parts without having to post polish them. When milling important optical parts, we usually use smaller ro. 1 diamond tools. Examples include reflectors and light guides.
5-axis CNC milling is another complex machining method for vehicle projects. A common rule is that the CNC milling cutter and the base must always be turned simultaneously. In general, we use PMMA materials on most optically transparent components. It easily breaks under the slightest pressure. This risk increases when using 5-axis CNC milling to process parts. Damage involves the development of cracks.
Aluminum is one of the most popular metals we use in CNC milling projects. Its function allows us to use it in various projects. High precision aluminum processing involves following very strict guidelines. There may be strict surface roughness and hole accuracy requirements. An example of an accurate tolerance is H6 or even H5. We use it for reaming holes that require careful machining.
In addition, there is a very important place to pay attention to in the high-precision aluminum processing project. Our designers are very careful when dealing with aluminum parts of cylinders. Of note is their surface finish. There are three main dimensions: RZ, Rmax and RA. They are specific. Each type of dimension usually has three tolerance ranges.
Roughness average / average roughness is a mathematical average. It refers to the absolute roughness profile ordinate. It is an effective measure of roughness. In addition, it provides good details of different heights of the surface. It is measured in microinches or microns. The average roughness depth / RZ is the average value of the individual roughness depths. The depth is a continuous sample. The maximum roughness depth / Rmax refers to the single longest roughness depth.
One of the most difficult tasks that CNC machinists must overcome is to handle steel. This is the case when processing steel parts. Since most tools are also steel, it is difficult to process steel parts. Tools or parts may break during machining. This feature makes steel more difficult to process than other metals. In addition, it leads to a shorter tool life cycle. These shortcomings of CNC milling of steel parts led us to re evaluate the work of the steel processing project. When CNC milling steel parts, we mainly use 2 machines. This extends the delivery time of steel processing projects.