A cylindrical grinder is one of the grinding machines that is used to shape the outer side of work pieces through the grinding mechanism. It can process a variety of shapes; however, the object must have at least a central axis of rotation so that it can be spinning concentrically. This includes but is not limited to such shapes as cylindrical, but from such as cam, ellipse, crankshaft, etc.
Definition of cylindrical
The essential definition of cylindrical grinding is that the machine must have four critical actions: Firstly the work piece must be constantly rotating; secondly, the grinding wheel, i.e. cutter, must be rotating constantly; thirdly, the grinding wheel is fed forwards and backwards towards the work piece. Last, work pieces is traversed with respect to the grinding wheel. The majority of cylindrical grinders nowadays utilize all the four movements, while there are still grinders that only utilize three of the four actions to process
Inventory of grinding mechanisms
There is a huge number of grinding machine inventory. Regarding the grinder 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, just to name a few. To be specific, although cylindrical grinding is nearly the same as toll grinding in most of the processing details, there are some critical differences between the two categories. Roll grinding method is developed specifically for certain issues that usually require machines that are designed for such heavy works.
Therefore, these machines are larger in size, heavier in weight, and are more rigid if compared with plain cylindrical grinders. As a result, normally these machines have no provision for doing tapered works and tasks.
Roll and cylindrical grinding
In ordinary grinding, rolls are commonly used in many industrial sectors for processing products, for paper, paint, steel, textiles, and rubber material processing. The length of the rolls varies from a few centimeters up to six meters or more, and throughout the length, a highly finished surface is required. In practical usages, these rolls give sheet metal work pieces the high finish, which is required without polishing or further buffing. If the rolls are designed to be used for cold-forming metal, then the great pressure between the work and the rolls would cause the rolls to spring apart at the center.
Once if such situation occurred, the rolled metal would be thicker at the center while thinner at the edges if the perfectly uniform diameter rolls were used for this purpose. Therefore, the desirable correct curve of the face of the roll needs to be carefully calculated. In addition, when it comes to roll grinding, machines should occur with a crown or convex surface for precision. Usually roll grinders would have provisions for rotating the rolls on their own bearings. And, they may also rotate on the tailstock and headstock centers.
Taiwan’s grinder manufacturers
In Taiwan, there are many cutting edge roll grinding machine suppliers that offers a comprehensive roll grinding solutions to users all over the world, such as PROMA Machinery, GRINDIX Industrial, PRAISE Machinery, WISE Machinery, etc. Many of these Taiwanese grinding machine manufacturers are experienced industrial insiders who know better than their customers about the application and the technical issues that determine the final precision. For example, the CNC Roll Grinder Machinery made by PROMA adopts FANUC CNC-controller and is applied to develop roll grinding process.
HMI interface helps a lot on grinding
The operation system of this machine is configured with a humanized operation panel that promises accurate signaling of grinding motions. The friendly human machine interface not only assures precision operation, but also great convenience for users in the manufacturing sites of many different conditions. With modern programming technology, operators of grinders nowadays only need to call the corresponding cutting programs from the machine memory and the machine will process with appropriate motions.
Most of the grinders are of NC control system in the 1990s and even at the early 2000 era, however, with the processing demands of high accuracy comes, nowadays more and more manufacturers ask for CNC controller for their cylindrical grinding machines. While the controller system may vary due to the system suppliers, now many Taiwanese grinder manufacturers offer their own CNC system which is developed by their own which also provide a wide variety of grinding modes for users to cover their processing tasks and are able to deal with multiple tasks at the same time. These grinder manufacturers, though do not adopt German or Japanese controller system, have their HMI well developed in the PLC background, which offers a simple and easy channel for users to modify their processing in the future once if the functionality need to be further face lifted.