CNC machining parts is a very convenient and efficient manufacturing technique that utilizes computer numerical control (CNC) technology to control machines and tools for machining various materials and items.
CNC precision parts machining materials that can be machined on machine tools
Almost all machining materials can be used on CNC machines. It really depends on the application. Common materials include metals such as aluminum, brass, copper, steel, and titanium, as well as wood, foam, fiberglass, and plastics such as polypropylene, ABS, POM, PC, nylon, and more. But some materials are too soft or too soft and rigid to be machined on a CNC machine. For example, materials like rubber or silicone are too soft for CNC machining parts, and ceramics are too hard for precision machining.
Common precision CNC machining parts processing uses
Utilizing CNC technology and a variety of cutting tools, almost anything can be manufactured on a CNC machine, from marine components, mechanical components to aerospace components, which are often high-precision components, including shafts, gears, bushings, flywheels, cams, dies , propeller, etc.
The products that can be produced on a CNC machine depend on the type of machine used. Each type of CNC machine has its own machining capabilities for making unique component properties. For example, round or spherical parts produced on a CNC turning center cannot be produced on a CNC milling machine. Parts produced from milling machines cannot be produced with CNC lathes, etc.
Precision CNC machining parts products that can be turned
In the CNC machining industry, CNC lathes are used to process linear cylinders, inclined cylinders, arcs, and various threads, grooves, worms, and can also process some complex rotating surfaces, such as hyperboloids. Typical CNC turned parts include shift knobs, knobs, pulleys, shafts, hubs, bushings, flywheels, etc.
Precision CNC machining parts products that can be milled
CNC milling machines are mainly used to process various complex planes, curved surfaces and shell parts, for example, various cams, molds, connecting rods, blades, propellers, boxes, and shell shape parts are processed by CNC milling. In summary, typical CNC milled parts can be divided into three categories: flat parts, surface parts and angle steel parts.
Each machine has its own precision class and machining sequence. Sometimes, some processing equipment will be used to make certain parts.
So what can't CNC machining parts do?
Almost all parts can be manufactured on CNC machines, but there are some limitations. Parts with certain features that are not suitable for CNC machining include:
1. Inner vertical angle
Since a CNC milling tool has a cylindrical shape, it will leave a radius on the vertical corners when cutting the inner wall. While using a smaller diameter tool can reduce the nose radius, no matter how small the diameter of the tool used, it is not possible to make internal vertical corners.
2. Precision parts with deep cavity
Due to the limited cutting length, the tool usually works best when the depth of the cut reaches a cavity that is 2-3 times its diameter. Milling pockets with a depth of more than 4 times the tool diameter will greatly increase the difficulty of machining and tool breakage.
3. Thin-walled precision parts
Thin walls are difficult to machine and easily deform or break during CNC machining parts. Thin-wall machining requires multiple passes at low depths of cut, and thin features are also prone to vibration, making them challenging and increasing machining time precisely.
4. Precision parts with cutouts
Some cuts on the inner wall of the part are difficult to CNC machine because the cutting tool can't get there to do any machining.
Therefore, it is recommended to avoid using these functions before designing precision CNC machining parts.
CNC machining parts provide precise cutting and manipulation capabilities, and it is easy to say that almost any product made of wood, metal, aluminum, alloys, and various other materials can be completely constructed or improved by using a CNC machine. CNC has its limitations, so it is advisable to avoid shortcuts before designing CNC to machine precision parts.