PCD tool grinding process

PCD tools have high hardness, high heat resistance, long life, sharp chip edge and good thermal conductivity, etc., which can meet the requirements of high-speed, high-efficiency, high-precision, new materials and new shapes for automotive parts processing

PCD tools have extremely low material removal rates due to their high hardness. The PCD tool sharpening process mainly uses vitrified bond diamond grinding wheel for grinding. Since grinding belongs to the interaction between two materials with similar hardness, the grinding law is more complicated.

 

In addition to the performance of the machine tool and the selection of grinding fluid, the selection of grinding wheels for grinding is also crucial. The particle size, concentration and bonding agent of the abrasive have a great influence on the quality of the edge of the PCD tool and its processing efficiency, and the quality of the edge will affect the surface quality of the workpiece processed by it. As a supplier of grinding wheel tools, we have deep experience in the process of processing grinding wheel substrates.

For example, we use PCD tools for processing aluminum substrates. When processing aluminum substrates of the same material on the same lathe, the surface roughness of the substrates can be visually distinguished.

 

Take a closer look at the picture below to see:
The No. 1 grinding wheel has obvious knife lines, while the No. 2 grinding wheel has a smoother and brighter base. In fact, the two turning tools are made of imported raw materials with the same grain size; the turning tool for processing No. 2 grinding wheel is made with our ceramic diamond grinding wheel. The cutting edge is ground and finished, the cutting edge quality is good, and the chipping is small.

When the worker is using the manual lathe, the process of turning the aluminum substrate of the No. 1 grinding wheel is relatively blunt, there is vibration and resistance, especially when the car is chamfering, there is an intermittent feeling;

The process of turning the aluminum substrate of the No. 2 grinding wheel is very silky and smooth. In the words of the worker, it is like cutting a fruit.

 

One of the keys to PCD cutting tool manufacturing technology is the sharpening quality of the cutting edge. If high-quality tool materials lack the ideal sharpening process and technology, resources will be wasted. The use of high-quality grinding wheels will greatly improve the product quality of PCD tools. Reduce tool production costs and usage costs.

 

Selection of grinding wheel for PCD tool processing

The grinding wheel for PCD tool processing should preferably be a vitrified diamond grinding wheel. The vitrified bond diamond has moderate strength, good self-interest, and many internal pores, which is conducive to chip removal and heat dissipation.

 

In the grinding process, micro-cracks are prone to occur so that the abrasive grains are renewed and sharpened, which is beneficial to improve the accuracy and efficiency of the machined surface, but attention should be paid to the selection of particle size. With the decrease of particle size, the quality of the cutting edge is getting better. The particle size of the grinding wheel is very closely related to the quality of the cutting edge of the PCD cutting tool.

 

The vitrified diamond grinding wheel designed, developed and produced by our company has a very mature formula and technology in the edge finishing of PCD cutting tools. Welcome to consult!