Precision grinding/Carbide & metal grinding/Thread grinding
ETCN can grind various materials, including hardened steel, high-strength alloy steel, cemented carbide, glass, ceramics and marble and other high-hardness metal and non-metal materials.
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Precision grinding/Carbide & metal grinding/Thread grinding

Grinding refers to the processing method of using abrasives and abrasive tools to remove excess material on the workpiece. Grinding is used to process the inner and outer cylindrical, conical and flat surfaces of various workpieces and special and complex forming surfaces such as threads, gears, and splines. Due to the high hardness of the abrasive grains, the abrasives have self-sharpening properties. Grinding can be used to process various materials, including hardened steel, high-strength alloy steel, cemented carbide, glass, ceramics, marble, and other high-hardness metals and non-metallic materials.

With the development of technology, grinding technology is developing in precision, low roughness, high efficiency, high speed, and automatic grinding. 

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According to the purpose and requirements of the process, the grinding process has many forms. Production mainly refers to grinding with a grinding wheel. Usually, according to the grinding processing form of the grinding machine product and its processing object,the grinding method is divided into four methods:

1. According to the grinding accuracy, it is divided into rough grinding, semi-finishing grinding, fine grinding, mirror grinding, and superfinishing.


2. According to the feed form, it can be divided into cutting grinding, longitudinal grinding, slow feed grinding, no feed grinding, constant pressure grinding, and quantitative grinding.


3. According to the grinding form, it is divided into belt grinding, centerless grinding, end grinding, peripheral grinding, wide wheel grinding, profile grinding, profiling grinding, oscillation grinding, high-speed grinding, powerful grinding, Constant pressure grinding, manual grinding, dry grinding, wet grinding, grinding, honing, etc.


4. According to the machined surface, it is divided into external grinding, internal grinding, surface grinding, and sharpening (gear grinding and thread grinding)


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Compared with other cutting processing methods, such as turning, milling and planing, CNC grinding has the following characteristics:

(1) High grinding efficiency.

The grinding wheel rotates at high speed relative to the workpiece. Generally, the linear speed of the grinding wheel is 35m/s, which is about 20 times higher than that of the ordinary cutter. The machine tool can obtain a higher metal removal rate. With the development of new grinding technology, the efficiency of grinding processing has been further improved. Turning, milling and planning have been replaced in some processes, and they are processed directly from the blank. At the same time, the abrasive particles and the workpiece produce strong friction and sharp plastic CNC lathe deformation, which generates a lot of grinding heat.


(2) High machining accuracy and low surface roughness of the machine tool can be obtained.

The cutting chip layer of each abrasive grain is very thin, generally only a few microns, so the surface can obtain high precision and low surface roughness.


(3) High cutting power consumes more energy.

The grinding wheel is composed of many abrasive grain CNC lathes, and the distribution of abrasive grains in the grinding wheel is messy and uneven. When cutting, the rake angle is mostly negative, and the tip has a certain arc radius, so the cutting power is large, and the energy consumption is large.


(4) Wide processing range.

The grinding wheel has high abrasive grain hardness and good thermal stability. It can not only process materials such as unhardened steel, cast iron, and non-ferrous metals. And it can process hardened steel, various cutting tools, and hard machine tool alloys with high hardness materials.


(5) High flexibility.

It is mainly manifested in the flexibility and variability of processing CNC lathe objects. It is easy to change from one type of part processing to another within a certain range by changing the application software. Which significantly shortens the equipment adjustment and production preparation time in multi-variety production.


(6) Realize the automation of machine tool operation and machining process.

CNC grinding machine processing solves the basic contradictions of low processing automation and processing efficiency of ordinary machine tools and poor flexibility of automatic machine tools, special machine tools, or automatic line processing and has become a modern processing method with perfect functions.

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FAQ

1. What are the differences, advantages and disadvantages of grinding and milling? Which one is higher in production efficiency?

Grinding is the use of abrasive tools to process the surface of the workpiece. Most grinders use high-speed rotating grinding wheels for grinding processing, and a few use other abrasive tools such as oilstone, belts, and free abrasives for processing. The grinder can process materials with higher hardness, such as hardened steel, cemented carbide, etc.; it can also process brittle materials, such as glass and granite. The grinder can perform high-precision and small surface roughness grinding and can also perform high-efficiency grinding, such as powerful grinding. Milling is to fix the blank and use a high-speed rotating milling cutter to move on the blank to cut out the required shapes and features. Traditional milling is mostly used to mill simple shapes/features such as contours and grooves.

2. Is the grinding speed limited by the grinding tool's rotating and breaking speed, as well as the high grinding temperature and the burn on the surface of the workpiece? 

The grinding speed is related to the motor speed. If the temperature is greater than 60 degrees, the machine must be shut down.

3. Under normal circumstances, when milling can meet the accuracy requirements, is it to avoid grinding as much as possible? Which cost is lower?

Grinding is mainly used for finish processing, and milling is mainly used for size processing. When the accuracy and finish allow, the milling processing efficiency is higher, and the cost is lower, so milling should be used as much as possible.

What is the advantage of working with Protolabs? Why should I choose your company to make my parts?

Can experience one-stop service, we can provide various types of processing services. Provide satisfactory products and quality services and after-sales

What types of parts does ETCN make?

Can experience one-stop service, we can provide various types of processing services. Provide satisfactory products and quality services and after-sales

What industries does ETCN work with?

Can experience one-stop service, we can provide various types of processing services. Provide satisfactory products and quality services and after-sales

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