Centerless Grinding: Through Feed Centerless Grinding

Centerless grinding mechanisms present a breakthrough in the automotive industry, improving precision and standards of ‘tight tolerance’ in machining components.

It is evident that centerless grinding has presented a major breakthrough in the machining industry. Widely recognized as top-of-the-line technology, centerless grinding machining operations achieve a nearly perfect surface polish, maintain tight diametrical tolerance and high precision, and are constantly adapting to fulfill the widest range of qualitative demands from metal workers and manufacturers. There is a true advantage in centerless grinding.

Purpose-built centreless grinding machines are used often in manufacturing processes. Such machines are composed of a grinding wheel, a regulating wheel, and some supporting tools for securing workpieces. With the optimal positioning made possible by these mechanisms, the desired finish is a near certainty at the end of each phase of the operation.

Centerless Grinding for camshafts and crankshafts

Centerless grinding is predominantly utilized in the manufacturing of automobile parts and engines, as well as components such as camshafts, crankshafts, needle rollers, input shafts, and injector plungers. Such components require precision and high standards of tight tolerance to function perfectly in each of their designated applications.

The rapidly increasing demand for precision components gives the operation itself a big role in keeping the wheels turning in the machining industry.

But the use of centerless grinding is not exclusive to automotive applications. These results are highly sought after in the many industries that require precision in the manufacture and use of raw materials, such as aerospace structure for turbine engines, tubes for industrial and medical purposes, etc.

Accuracy Achieved With Plunge Grinding Services

Accurate polish and finish is achieved through the removal of abrasive material during the grinding operation. These operations have no “centers” to be exact, which is to say that centreless grinding does not require spindles or fixtures to hold the workpiece while being ground. It’s simply a matter of the positioning regarding the grinding wheel, regulating wheel, and the workblade.

Centerless grinding has been widely used in achieving custom sizes. To achieve ranging sizes, form, and finish demands, centreless grinding is categorized into two primary forms:

Through-feed/Through Feed Grinding

If the challenge is to grind long, round bars, through-feed grinding is most effective. This course is done by allowing the workpiece to be fed to the machine where it is pulled by the regulating wheel and sent through the opposite side. Through-feed (often stylized as “thrufeed”) methods are highly efficient in that separate feed mechanisms are not required, though these methods are exclusive to workpieces with simple cylindrical shapes such as pistons, tubes, pistons pins, and bars.

In-feed/Plunge grinding

If one needs to grind relatively complex parts and shapes to a very precise finish, in-feed/ plunge grinding is best suited. Gear shafts, crankshafts, camshafts and other highly complex automotive components require the implementation of in-feed grinding to achieve the desired grind and finish. In this circumstance, the workpiece is loaded into the machine, allowing the regulating wheel to move into place. The complexity of the component shape requires accurate grinding to prevent the workpiece from being fed axially through the machine.

Advance Grinding strives to deliver high precision grinding to sort out your custom parts for your high-end application. Get our free quote or contact for more details.


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