External Grinder

The external cylindrical grinder is one of the grinding machines for forming the external side of the surface of the cylindrical workpiece by the grinding mechanism. Although it can process various shapes, the object must have at least one central axis of rotation so that it can rotate concentrically. This includes but is not limited to such shapes as cylindrical, but from such as cam, ellipse, crankshaft, and other similar objects that share this feature.
 
Regarding the meaning of cylindrical grinding, the machine has four key functions. The workpiece must continuously rotate, which is the first premise. The grinding wheel must rotate continuously, which is the second grinding wheel. The grinding wheel feeds the workpiece forward and backward, which is the third step. Finally, move the workpiece relative to the grinding wheel. Today, most external cylindrical grinding machines use these four movements, while some grinding machines still use only three of the four movements to handle the grinding process.

Classifications

The classification of grinding machinery inventory is huge. Regarding this inventory, there are belt grinder, bench grinder, cylindrical grinder, surface grinder, tool & cutter grinder, jig grinder, gear grinder, die grinder, angle grinder, and roll grinder. Specifically, in most machining details, cylindrical grinding and toll grinding are almost the same, but there are some key differences between the two. The roller grinding method was developed specifically for certain problems, which usually require the design of machines for such heavy work. Compared with plain cylindrical grinders, these machines are larger in size, heavier and stronger. Therefore, these machines are usually not prepared for taper works and processing.

 

Roll Grinding and Cylindrical Grinding

Rolls are also used in many industrial fields for processing products, for paper, paint, steel, textiles and rubber materials. The length of the roll varies from a few centimeters to six meters or even longer, and over the entire length, a highly polished surface is required. In practical use, these rolls give the sheet metal workpiece a high finish, without the need for polishing or further buffing. If the roll is designed for cold forming metal, the huge pressure between the workpiece and the roll will cause the roll to spring apart at the center part. Once this happens, the rolled metal will be thinner at the center and thinner at the edges if rolls of completely uniform diameter are used for this purpose. Therefore, it is necessary to carefully calculate the ideal and correct curve of the roller surface. When performing roller grinding, the surface with convexity or convexity should be used for processing to improve accuracy. Generally, roll grinders have measures to rotate the rollers on their own bearings.

 

Interface Matters

How to operate the machine is an important issue, and the operating system of the machine is equipped with a humanized operation panel. This panel guarantees an accurate signal of the grinding movement. The friendly human machine interface not only ensures accurate operation, but also provides great convenience for users in many different conditions of the manufacturing site. With the help of modern programming technology, today's grinder operators only need to call the corresponding cutting program from the machine's memory, and the machine will be processed with appropriate movements. In the 1990s, even in the early 2000s, most grinders were NC control systems. Due to the increasing requirements for high-precision machining, more and more manufacturers now require CNC controllers for their cylindrical grinding machines.
 
The controller system may vary depending on the system supplier. Many Taiwanese grinding machine manufacturers now provide their own CNC systems. These systems were developed by themselves and also provide users with multiple grinding modes to cover their machining tasks and be able to handle multiple tasks simultaneously. Although these grinder manufacturers do not use German or Japanese controller systems, their HMI has been well developed in the PLC background. Once the functions need to be further changed, users can easily modify their processes in the future, thus providing users with easy-to-use channels in the engineering blueprint.

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