Internal Grinding

The meaning of internal grinding refers to the grinding of bores and holes. This grinding process may be one of the most difficult grinding processes in the industry.

Internal Grinding Wheel

Each abrasive particle on the grinding wheel cuts a small piece from the work piece by the shear deformation method. Due to the wide range of uses, grinding machine has a large number and its classification is very complex. Common types of grinders include belt grinders, belt grinder, bench grinder, cylindrical grinder, surface grinder, tool & cutter grinder, jig grinder, gear grinder, die grinder, angle grinder, and roll grinder.

Internal grinders may include multiple grinding wheels for different purposes. By rotating the work piece and passing it through one or more grinding wheels, the inner wall of the cylindrical profile is formed. The internal grinder can be used to make precision pipes, tubes, bearing races, bushings, and many other parts.

Can an Internal Grinder Applies to Other Purposes?

Internal grinder is a special type of grinding machine, designed for grinding the internal diameter of the work piece. Although in most grinding details, internal grinding is almost the same as cylindrical grinding for grinding the internal diameter, there are some key differences between the two. Most importantly, the requirements of internal grinding are very wide. It can remove the blank very quickly and complete the concentricity. 

Rolls are commonly used in the processing of paper, paint, steel, textiles and rubber materials. The length of the roll varies from a few centimeters to six meters or even longer. Over the entire length, a highly polished surface is required. In actual use, these rollers can give the sheet metal work pieces a higher finish quality.

Internal Grinding Cold Forming Application

If the roll is used for cold forming metal, the huge pressure between the work piece and the roll will cause the roll to bounce off in the center. In this case, if a completely uniform roll is used, the rolled metal will be thicker at the center and thinner at the edges. Therefore, it is necessary to carefully calculate the correct curve of the roll surface. In addition, when performing roll grinding, a convex surface should be used for processing to improve accuracy. Generally, roll grinders have the ability to rotate the rolls on their own bearings, and can also rotate in the center of the tailstock and headstock.


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