CNC Machine Service

What is CNC machining

The abbreviation of CNC machining computer numerical control machine tool refers to a process method for machining parts on CNC machine tools.

The process rules of CNC machine tool processing and traditional machine tool processing are generally consistent, but there have also been significant changes. A machining method that uses digital information to control the displacement of parts and tools. It is an effective way to solve the problems of changeable parts variety, small batch, complex shape, and high precision and realize efficient and automatic processing.

CNC index-controlled machine tools are programmed and operated by CNC machining language, generally G code. The CNC machining G code language informs the CNC machine tool which Cartesian position coordinates to use for the machining CNC blade, and manipulates the cutting speed of the CNC blade and the speed ratio of the spindle bearing, as well as its special tool changer, coolant and other functions.

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CNC machining center

Compared with manual machining, CNC machining has great advantages. For example, the parts produced by CNC machining are very precise and accurate, CNC machining can produce parts with complicated appearance designs that cannot be performed by manual machining.

The technology of CNC machining has been widely promoted, Most of the machining workshops have the ability of CNC machining.

The most common CNC machining methods in typical machining workshops are CNC machining centers and CNC machine tools EDM wire cutting (spark discharge).

The special tools for carrying out CNC machining centers are called CNC milling machines or CNC machining centers.

The CNC lathe that carries out the milling of the CNC machine tool is called the CNC lathe center.

The CNC machining G code can be written manually, but the general machine shop uses the CAM (aided design and manufacturing) software to automatically load the CAD (aided design and design) document and convert it into the G code program flow to operate the CNC machine tool.

CNC Turning

CNC turning is one of the most used methods in CNC machining.

In CNC lathes, the rotational movement of the workpiece is the main movement, and the turning tool does the feed movement, the main processing objects are the parts of the gyroid.

The basic turning processing contents include: turning the outer circle, turning the end face, drilling, reaming, boring, threading, tapping, and so on. According to the processing characteristics of CNC lathes, it can be said that all workpieces that can be clamped on CNC lathes can be processed by CNC lathes.

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Advantages and Challenges of CNC machining:

1. When the machining parts are changed, generally only the CNC program needs to be changed, which can save production preparation time.
2. Mass production, easy to control product quality.
3. The machine tool has high precision, good rigidity and high productivity.
4. It can carry out multi-coordinate linkage, can process parts with complex shapes, and even process some unobservable processing parts.
5. High machining accuracy.
6. The machine tool has a high degree of automation.

A good CNC machining process plan should consider the following points

1. Whether the technical requirements of the parts can be met.

2. Whether the CNC machining efficiency can be improved.

3. The processing cost is low.

4. The quality control is good.

Therefore, the overall CNC machining process plan is usually as follows:

1. Selection of CNC machine tools.
2. Select a processing method.
3. Determine the clamping method of the part and select clamping.
4. Positioning method.
5. Inspection requirements and inspection methods.
6. Select Tools.
7. Error control and tolerance control during processing.
8. Define the CNC process.
9. CNC sequence.
10. Select cutting parameters.
11. With CNC machining program table.

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Ningbo Aikehan Metal Products Co., Ltd. is a company specializing in the production of machined products, parts, aluminum die-casting products, zinc die-casting products, including support for a variety of surface treatment methods such as spray, paint, oxidation, etc., in machining We have very rich experience and quite mature technology in the field. The division of labor between various departments is clear and the relationship is close.
At present, we have 13 CNC machining centers, more than 30 CNC lathes, and three-coordinate inspection machines.

CNC Machining Material

Most of the materials used in CNC machining are aluminum alloys 6061-T6 and 6063-T6, which have good machinability, excellent welding characteristics and electroplating properties, strong corrosion resistance, high toughness, no deformation after processing, and dense and defect-free materials. Excellent oxidation effect and other excellent characteristics.

Brass is also one of the commonly used materials because of its high strength, hardness, and chemical resistance, there are also outstanding mechanical properties of cutting.

Stainless steel materials are also often used in CNC machining, 304 stainless steel has the characteristics of good processing performance and high toughness.

There is also more steel used, and 45 steel is commonly used, which has high strength and good machinability.

CNC Machining Time and Size

Machining is usually calculated based on the processing time, so choosing high-quality tools and choosing a correct machining tool path can effectively reduce the processing cost.

The machining accuracy is very high, the tolerance standard is 0.005mm, the maximum size that can be machined is 800mm*500mm*300mm, and the diameter of the CNC lathe does not exceed 250mm*100mm, and the travel range of the tool is 300mm.

Of course, an experienced machining master is indispensable, which can very effectively reduce the cost of machining parts.

CNC Machining Surface

The CNC machined product can be treated with some surface treatment to play a protective role and be beautiful.
As a result, the anti-oxidation and anti-corrosion of the surface-treated product will be greatly enhanced.
The commonly used surface treatment methods are: anodizing, spraying, baking paint, electroplating, Electrophoresis, polishing, shot blasting, etc., these are used more methods.
Of course, it is necessary to make reasonable suggestions and use them according to the actual situation of the product and customer requirements, so as to get twice the result with half the effort, because some materials are not suitable for individual surface treatment.

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