Rubber Roll Grinder

Overview

The rubber roll grinder involves the process of grinding a rotating rubber roll using a grinding wheel. A rotating plugging roll that is applied to the grinding wheel is cut during the last grinding, and the plugging roll is basically a harder rubber than the rubber roll itself. To gain more insight into roll grinding, let us take a look at the metal working roll grinder.
 

Roll Grinding

In the metalworking industry, there is a large selection of grinding machines. Among the grinding machine family, there are belt grinder, bench grinder, cylindrical grinder, surface grinder, tool and cutter grinder, jig grinder, gear grinder, die grinder, angle grinder, and roll grinder. These are all similar but not identical machines. 

Although roll grinding and cylindrical grinding machines are almost the same in most aspects, there are some key differences between the two categories. Roll grinding is more of a specialty technique which usually requires the machine to be designed for heavy-duty tasks. Therefore, these machines are typically larger in size, heavier and stronger than the ordinary cylindrical grinders. As a result, these machines usually do not perform taper work.
 

Rubber Rolls

During the rubber roll grinding operation, the rotating rubber roll is ground by the rotating grinding wheel for a period of time to obtain a uniform surface with the required roughness in mind. The rollers play an important role as well. If a commercially available basic grinding wheel, having a particle size of 100, is used for grinding, the grinding wheel can be blocked during work. Using a basic grinding wheel with a particle size of 100 for grinding can lead to undesired grinding result. Rubber rolls are made to withstand toughest rigors, such as temperature changes, abrasives, and solvents. The rubber roll grinding process will produce many different surface structures on the rubber roll as intended.
 

Applications

In the metal processing industry, rolls and rollers generally go hand-in-hand in many industries for processing products such as paper, paint, steel, textiles, and rubber materials. The length of the rolls varies from a few centimeters to six meters or even longer. And over the entire length, a highly polished surface is required. These rollers can produce high finish for sheet metal workpieces without the need for polishing or further grinding to meet the requirements. 

If the roll is designed for cold metal forming, the huge pressure between the workpiece and the roll will cause the roll to spring apart from the center. When this happens, and if a roll with a completely uniform diameter is used for this purpose, the thickness of the center of the rolled metal will become thicker, and the thickness of the edges will become thinner. Therefore, it is necessary to carefully calculate the ideal and correct curve for the roll surface. When performing roll grinding, the crown or convex surface should be used for processing to improve accuracy. Generally, roll grinders have measures to rotate the rolls on their own bearings with the rollers.
 

Stripped Methods

With respect to rubber roll grinding, as with the mechanical process we introduced, rubber roll grinder wheels were stripped manually by the worker with clean rubber during the abrasive cutting process in the past. This is a rather obsolete method of undertaking rubber roll grinding. The machine operator is responsible for the cleaning process because grind wheels in most cases do not stay clean, which may affect the structure of the surface and the level of roughness. Therefore, these machines, or particularly the rollers, must be polished periodically due to ensure that the unit manifests the most optimal conditions. Many issues existed in this method however, which then translate to a vision of how to make the related processes more efficient by manufacturers of various industries in the 21st century.

Later, the modern rubber roll grinding manifested itself by an invention which improves rotating rubber rolls by means of grinding wheels, and achieve uniform surface quality and roughness. Furthermore, the deviation of the geometric shape is minimized as intended in the work scheme. In light of the above, the polishing expenditure can be kept at a lower cost.

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