General CNC machining usually refers to computer digital control precision machining, CNC machining lathes, CNC machining milling machines, CNC machining boring and milling machines.
CNC is also called computer cymbal, CNCCH or CNC machine tool. It is actually a name called Hong Kong. Later it was introduced into the Pearl River Delta of the mainland. In fact, it is a CNC milling machine. It is a machine called “CNC Machining Center” in Guangzhou, Jiangsu, Zhejiang and Shanghai. This is a new type of processing technology. The main task is to prepare the processing program, which is to turn the original manual to computer programming. Of course, you need to have experience in manual processing.
CNC machining advantages
- A large number of tooling reductions are required, and complicated tooling is not required for machining complex shapes. If you want to change the shape and size of the part, you only need to modify the part processing program, which is suitable for new product development and modification.
- The processing quality is stable, the processing precision is high, the repeating precision is high, and it is suitable for the processing requirements of the aircraft.
- High production efficiency in multi-variety and small-volume production, which can reduce the time for production preparation, machine tool adjustment and process inspection, and reduce cutting time due to the use of the best cutting amount.
4, can process conventional methods difficult to process complex profiles, and even can process some unobservable processing parts.
- The disadvantage of CNC machining is that the machine tool is expensive and requires a high level of maintenance personnel.
In addition to providing 3D printing services for users, the future workshops can also provide services such as mold opening, silicone molding, and CNC machining. The main materials for CNC machining are as follows:
Aluminum alloy 6061
6061 aluminum alloy is a high-quality aluminum alloy produced by heat treatment pre-stretching process. Its strength cannot be compared with 2XXX series or 7XXX series, but its magnesium and silicon alloys have many characteristics.
It has excellent processing properties, excellent welding characteristics and electroplating properties, good corrosion resistance, high toughness and no deformation after processing, compact and defect-free materials, easy polishing, easy filming and excellent oxidation.
7075 aluminum alloy
7075 aluminum alloy is a cold-treated forging alloy with high strength, far better than mild steel. 7075 is one of the most powerful alloys for commercial use.
Common corrosion resistance, good mechanical properties and anode reaction. The fine grain makes the deep drilling performance better, the tool wear resistance is enhanced, and the thread rolling is more distinctive.
Pure copper (also known as copper) is a tough metal with excellent electrical conductivity. It is rose-red. It is not pure copper. It contains 99.9% copper and adds some other elements to improve the surface and performance.
It has good electrical conductivity, thermal conductivity, ductility, deep drawability and corrosion resistance.
The conductivity and thermal conductivity of copper are second only to silver and are widely used in the production of conductive and heat-conductive equipment. Copper is used in the chemical industry for good corrosion resistance in the atmosphere, seawater and certain non-oxidizing acids (hydrochloric acid, dilute sulfuric acid), alkalis, salt solutions and various organic acids (acetic acid, citric acid).
It has good weldability and can be processed into various semi-finished products and finished products through cold and thermoplastic processing. In the 1970s, the output of copper exceeded the total output of other types of copper alloys.
Brass is a copper-zinc alloy, and brass made of copper and zinc is called ordinary brass.
It has high strength, high hardness and strong chemical resistance. Also, the mechanical properties of the cutting process are also prominent.
Brass has strong wear resistance. Special brass is also called special brass, which has high strength, high hardness and strong chemical resistance. Also, the mechanical properties of the cutting process are also prominent. The seamless copper tube drawn from brass is soft and wear resistant.
45 steel is called GB, also known as “oil steel”, which has high strength and good machinability.
It has high strength and good machinability. After proper heat treatment, it can obtain certain toughness, plasticity and wear resistance. It has convenient material source and is suitable for hydrogen welding and argon arc welding.
40Cr steel introduction
40Cr is the standard steel grade of China GB, and 40Cr steel is one of the most widely used steels in machinery manufacturing.
Has good comprehensive mechanical properties, good low temperature impact toughness and low notch sensitivity. The hardenability of the steel is good, and the steel is suitable for cyanidation and high-frequency quenching treatment in addition to the quenching and tempering treatment. Good cutting performance.
Q235 steel introduction
Q235 steel is a carbon structural steel whose Q in the steel number represents the yield strength. Usually, the steel is used directly without heat treatment.
As the thickness of the material increases, the yield value decreases. Because of the moderate carbon content, the comprehensive performance is better, and the properties such as strength, plasticity and welding are better matched and the most widely used.
SUS304 refers to 304 stainless steel, which has the characteristics of good processing performance and high toughness.
It has good corrosion resistance, heat resistance, corrosion resistance, low temperature strength and mechanical properties, good hot workability such as stamping and bending, no heat treatment and hardening, and no magnetism.