How to choose grinding wheel for grinding CNC cutting tools?
With the increasing application of CNC tools , the high reliability of CNC technology has become the goal pursued by manufacturers. In order to meet the needs of long-term unmanned operation, CNC systems and CNC devices must have higher reliability. As we all know, the main form of CNC tool processing is high-speed and high-precision profile grinding, which also puts forward new requirements for the high-speed performance of grinders and the stable grinding performance of diamond and CBN grinding wheels.
How to ensure the quality of tools while improving carbide tools’ stable and efficient grinding?
This places higher and higher requirements on the rigidity and grinding performance of grinding wheels. Moresuperhard has always been committed to the research and development and manufacturing of efficient and stable grinding wheels. Provide customers with comprehensive grinding solutions. Due to the good shape retention and sharpness of the grinding wheel, automated grinding can be easily achieved through CNC grinders, which can help customers truly achieve cost reduction and efficiency improvement, improve the overall processing rhythm of tools, and stably and efficiently ensure customers’ mass production.
The geometric shape of rotating cutting tools is ground through multiple production steps.
The typical grinding process starts with tool blank preparation, followed by bar cutting, centerless grinding, chamfering, step grinding, fluting, tooth clearance and back angle grinding.
CNC grinding wheels are widely used in CNC machining, mainly used for grinding CNC tools such as carbide, high-speed steel, stainless steel drills,end mill cutters and reamers.
End mill cutter grinding is used in many industrial fields, so what kind of grinding wheel is better for grinding milling cutters?
End Mill cutters are generally divided into carbide milling cutters and high-speed steel and other steel end mill cutters. The best choice for grinding carbide end mill cutters is resin diamond grinding wheel, and CBN resin bond grinding wheel is the best choice for grinding high-speed steel or other steel milling cutters.
Depending on the different parts and requirements of the milling cutter, the shape of the selected grinding wheel is also different, such as diamond cup grinding wheel, flat grinding wheel, flat shape diamon grinding wheel, bowl diamond grinding wheel, disc grinding wheel, etc.
| Flute | OD relief | End teeth | ||
| Wheel shape | 1A1,1V1,3A1,3V1 |
11A2,11V4,11V5,3V1 |
Gashing | 1V1,3V1,etc.. |
| End teeth | 11A2,11v4,3v1,etc…. | |||
| Corner radius | 11V5,3V1 | |||
Application range of CNC grinding wheel
CNC grinding wheel is suitable for grinding a variety of CNC tools (rotary tools), including:
-Carbide cutting tools (tungsten steel): These tools are often used to cut high-hardness materials such as cast iron, steel, etc.
-High-speed steel cutting tools: Suitable for processing medium-hardness materials, with good toughness and wear resistance.
-Stainless steel cutting tools: Used for processing difficult-to-process materials such as stainless steel, requiring the grinding wheel to have high wear resistance and thermal stability.
-End mill cutters and reamers: These tools are often used for forming and finishing in mechanical processing, requiring the grinding wheel to have good shape retention and surface quality.
Applications of resin diamond CNC grinding wheel
resin diamond CNC grinding wheel is used for grooving, relief grinding, peripheral and end gear grinding of CNC tools such as solid carbide, high-speed steel drills, milling cutters and reamers.
Features of resin diamond wheel for CNC cutting tools:
(1) Suitable for high-efficiency grinding with fast feed.
(2) Good wear resistance and shape retention.
(3)Good self-sharpening, less grinding heat, reduced workpiece burns, and met the high-precision requirements of the tool.
(4) No clogging, easy to dress, extended dressing cycle, and reduced processing costs.
(5) The quality of the grinding workpiece edge is consistent and the finish is high, which makes the quality stable when processing downstream products.
Main features of hybrid bond diamond grinding wheel:
Cutting tools flute grinding is the most demanding and time-consuming operation, as the cutting depth is usually 7-8 mm. The large contact area makes it difficult for coolant to reach the grinding zone, so excessive heat is generated, which may damage the workpiece surface or reduce the particle strength of the heat-sensitive diamond abrasive grains.
The processing of the spiral groove of the tool has a large material removal and low processing efficiency, which can be completed by a powerful grinding wheel through a large cutting depth and low feed grinding process. The powerful grinding wheel and the groove grinding process parameters not only affect the quality of the tool edge, but also the surface quality of the tool circumferential rake face, and even cause burns and microcracks in the spiral groove after grinding.
The hybrid bond diamond flute grinding wheel is mainly used for flutting of CNC cutting tools. Hybrid bond diamond flute grinding wheel has high requirements for the wear resistance and sharpness of the grinding wheel. In addition, the strong slotting grinding wheel must meet the characteristics of large cutting depth and large feed. The use of strong slotting grinding wheels improves the slotting processing efficiency of carbide tools.
When processing with strong slotting grinding wheels, due to the small grinding resistance and low grinding temperature, the bar material will not crack, burn, or thermally deform. At the same time, the strong slotting grinding wheel has little wear during use, and the dressing cycle and service life of the grinding wheel will be greatly improved.
Advantages of hybrid bond diamond grinding wheel for CNC cutting tools:
(1) Longer life, higher material removal rate (large feed rate)
(2) Good shape retention
(3) Mostly used for rough grinding in the initial process, high production efficiency!
Selection and maintenance of grinding wheels
The following aspects need to be considered when choosing a suitable grinding wheel:
1. Material adaptability: Select the appropriate grinding wheel type and particle size according to the different processing materials.
2. Grinding efficiency: Efficient grinding requires the grinding wheel to have a high rotation speed and feed speed.
3. Shape retention: For the processing of complex shapes, the grinding wheel needs to have good shape retention.
4. Surface quality: The grinding wheel is required to provide good surface quality and low roughness.
—EDITOR: Doris Hu
—Post: Doris Hu
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