Talking about the research and development ideas of high speed grinding wheel
Grinding refers to the processing of removing excess material from a workpiece with an abrasive or abrasive tool. Grinding is a mechanical processing in the field of removal processing that belongs to the advanced processing technology of advanced manufacturing technology. Modern Fan,Hugger Ceiling Fans,Ceiling Fans Without Lights,Unique Ceiling Fans JIANGMEN ESCLIGHTING TECHNOLOGY LIMITED , https://www.windfansummer.com
According to the grinding speed of the grinding wheel, it can be divided into ordinary grinding (V ≤ 45 m / s), high-speed grinding (45 m / s ≤ V ≤ 150 m / s) and ultra-high speed grinding (V ≥ 150 m / s) .
Advantages of high speed grinding
High-speed grinding improves the Vs, which can reduce the thickness of a single abrasive chip. It can effectively reduce the roughness of the workpiece, improve the machining accuracy, improve the efficiency of the machine, extend the service life of the grinding wheel, and improve the shape retention of the grinding wheel. .
The key to high speed grinding
The key to achieving high-speed grinding is the higher head speed, greater motor power, higher grinder rigidity, stronger grinding cooling system, better bearing cooling scheme, higher wheel strength and Is there a grinding wheel to install the automatic balance system?
The most critical factor limiting high speed grinding is the strength of the grinding wheel. The strength of the grinding wheel determines the grinding speed, which poses a great challenge to the grinding wheel technology.
Research and development ideas for high speed grinding wheels
Improve the strength of the grinding wheel can take measures in the three aspects of abrasives, bonding agents and product design .
1. Abrasive treatment . (1) The surface of the abrasive can be treated to improve the joint strength with the bonding agent, especially on the resin grinding wheel; (2) to improve the cleanliness of the abrasive surface.
2. Binding agent . This is the core of the development of high-speed grinding wheel cores. Specifically, the bonding strength of the bonding agent is increased, and the coating property of the bonding agent is improved.
3. Design . (1) Designing a thin inner grinding wheel (ultra-high speed grinding wheel). In theory, the smaller the inner diameter, the larger the centrifugal force of the grinding wheel. This design is unrealistic in the manufacture and use of ordinary abrasive tools, but this design is in superhard material products. It can be realized; (2) It adopts high-strength inner ring material (used in the field of super-hard grinding wheel), and also manufactures ordinary grinding tools by manufacturers using this design in foreign countries; (3) Strengthening the grinding wheel design of inner ring, this point Especially in the design of heavy-duty grinding wheel, the internal and external formulations of the grinding wheel are different. The internal and external functions play different roles in grinding to improve the grinding performance of the grinding wheel. (4) The glass wheel is used to reinforce the grinding wheel. It is a large cutting piece; (5), using short glass fiber to increase the strength of the grinding wheel, which is useful in heavy-duty grinding wheels.
Introduction of high speed ceramic grinding wheel
As of February 28, 2014, 48.4% of the 276 certified ceramic wheel manufacturers in China produced a ceramic wheel with a line speed of ≤35 m/s. This should be an area of ​​low added value. There are already four ceramic grinding wheel enterprises that have reached the line speed of 80 m/s in China.
Introduction of high speed resin grinding wheel
As of February 28, 2014, 65.0% of the 0.02 certified resin grinding wheel manufacturers in China produced a resin wheel speed of ≤70 m/s. This part of the enterprise includes most of the cutting and polishing companies, and the grinding wheel is reinforced with glass fiber mesh. Therefore, the speed of the resin grinding wheel of many enterprises reaches 70 m / s and 72 m / s. There are 9 companies that have a resin wheel speed of 100 m/s.