
Precision Machinery Definition
Numerical control (also computer numerical control, and commonly called CNC) is the automated control of machining tools (milling, drilling, boring tools, lathes-turning).
A CNC machine processes a piece of material (metal, plastic, wood, ceramic, or composite) to meet specifications by following a Computer Aided Machining (CAM) instruction and without a manual operator.
Vietnam Outsourcing (VNO) works with Vietnamese manufacturers that have different machine shops set up for different application.With high-end CNC machine (3 axis to 5 axis) and experience CAD and CAM designers and operators, Vietnam Outsourcing (VNO) is able to manufacture high-end products from different industries, ie: semiconductor, electronic component, oil&gas, automotive parts s, etc...
We also work with a series of more conventional machines with open chamber and bigger work tables that are suitable for manufacturing components of other industrial applications.
1. What is CNC machining?
So, we now know what CNC stands for and how CNC machines work. But not all CNC machines are used for CNC machining..CNC machining refers to only a few of these automated processes. Namely milling, turning, grinding, routing, drilling, etc.
t is an operation where the cutting tool rotates. When the milling tool comes into contact with the workpiece, it removes chips from it.
Milling operations include:
- End milling
- Chamfer milling
- Face milling
- Drilling, boring, tapping, etc.
It is a very universal fabrication method with great accuracy and tolerances. Milling is suitable for a variety of materials and is also very quick. The ability to manufacture a wide range of complex parts is a great advantage.
The disadvantages include a large amount of waste, need for a variety of tooling and high cost of equipment.
CNC Turning

While the two are often called just CNC machining, turning and milling have distinct differences. Turning, or lathing is pretty much the opposite of milling. This means that instead of the cutting tool, the workpiece is rotating.
A CNC lathe is commonly used for producing shafts, for example. The tool is brought against the rotating workpiece to cut off bits of metal, known as chips or swarf.
Turning is usable on the outside of a cylinder or on the inside. The latter operation is called boring.
CNC Grinding

.
Besides the high machining performance possible with today’s CNC grinding machines during the actual grinding process, the loading and unloading of the workpieces is often also carried out fully automatically using automated loading facilities. This is referred to as an “unmanned operation”, where a sporadic check of the CNC grinding machine or the grinding process is all that is required. For the machining process itself, the continual presence of a worker at the CNC grinding machine is no longer necessary.
CNC Routing

A CNC router is similar to a CNC mill. It comes with the ability to use computer numerical control to route tool paths that enable the machine to function. CNC routers reduce waste and increase productivity, producing various items in a much shorter amount of time than using other machines.
CNC Drilling

2. What is G and M code in CNC Programming?
What is G-Code in CNC programming

What is M-code in CNC programming

3. How does a CNC machine work?
A CNC machine is a computer controlled carving machine. It generally speaking reads G Code that instructs the machine how to move, what feedrate and spindle speed to use, which cutting tool should be in the spindle, etc. The cutter that the machine has in the spindle will carve through the material (generally metal) and create the intended shape. The material that has been removed is called "chips" and it will usually be recycled.

In most cases a CNC machine is programmed by a programmer using CAM software who uses the software to apply tool paths to a 3D or 2D model of the part they want to make. Once the programmer has finished his/her programming work, the program is fed into a post processor which will turn the CAM program into the G code the machine can read. The G code is uploaded into a the CNC machine along with all the cutting tools needed, raw material and work holding needed to hold the raw material. Then a machinist will put the machine into automatic mode and start the program to make the part.
4. The situation of Vietnam CNC machining
Despite the high price of CNC machines, the needs of businesses in Vietnam are hugeSupply source: mainly imported machine
In our country, imported machines have two main groups of machines
1. The CNC machines are made by Taiwan and China
2. CNC machines of developed countries such as Japan, Germany
3. Domestic manufacturing machines, there are 2 manufacturing trends exist in parallel
- The trend of buying used "old machines"
- Trend of manufacturing components of machine structure and assembly in Vietnam

5. CNC MACHINE APPLICATION IN VIETNAM
CNC machine was born as a new turning point of the era of scientific and technological development. Therefore, many fields have used this type of machine, especially the field of mechanics. People can use CNC machines to process different types of products from wood to stone and metal.
- In the field of furniture manufacturing, CNC machines are used to process patterns and engrave details quickly.
- In the areas of manufacturing household appliances and assembling vehicles, CNC machines are also used to process molds, for sophisticated designs.
- In the field of steel structure machining, CNC cutting machines are used to cut complex metal shapes with absolute precision. CNC cutting torch is used to cut oxygen, plasma and more advanced than laser cutting.
Equipments |
CNC vertical machining center |
CNC vertical machining center w 4th axis |
CNC 5 asix vertical machining center |
CNC Lathe |
Swiss-type CNC Lathe |
Milling machine |
Deep hole drilling machine |
Drilling machine |
Reaming machine |
Lapping machine |
Grinding machine (Surface, external, internal...) |
Multi-purpose Grinding machine |
Multi-purpose lathe machine |
Vertical Lathe |
Milling CNC machine |
Circle external CNC machine |
Wire cutting CNC machine |
Drilling, cutting, reaming machine |
A member of our team will be in contact with you.
Sign up to download the profile
Complete your information in the form below