Machining solutions for bars? All summed up in one operation called precision centerless grinding.
If the requirement takes a challenge of machining and grinding round parts and components with long length and complex shapes and sizes, precision centerless grinding must be the first one on the list. The underlying reason behind this is that centerless grinding brings multiple tasks such as polishing, roughing, cleaning, and finishing – which are all significant upon the operation.
Centerless grinding is a type of OD (outside diameter) grinding that enhances the materials’ all around surface polish and straightness and diameter tolerance. But unlike any other traditional grinding operations, the process doesn’t take much supporting tools but the workblade itself which is held between the grinding wheel and the regulating wheel, must be properly adjusted for a proper hold.
Centerless grinding for long round bars
Centerless grinding is consistently used for grinding long round bars that are passed in a single pass. Long round bars, tubes, and even pistons are being ground through this operation to achieve the required diameter tolerance, roundness, and surface polish. Through-feed centerless grinding is used in this process.
Centerless grinding for complex parts
Having complex parts is never a problem when it comes to precision centerless grinding operation. The abrasive grains placed on the wheel and the controlled support enable it to grind the smallest part diameter and even out-of-round materials. This kind of cylindrical surface grinding undergoes a very thorough process that makes it possible to achieve accurate diameter tolerance, perfect straightness, and precision roundness. In the production of camshafts, crankshafts, and gear shafts, the in-feed centerless grinding is highly used.
Making round bars rounder
Precision centerless grinding removes metal and grinds the surface of round bar in a rounding action. The application of thousands of abrasive grains on the grinding wheel makes the optimum grinding possible. These grains take a bite to the workpiece to remove the unnecessary parts. The continuous rounding motion is the way towards achieving precise roundness and diameter tolerance of the bar. The process wears and loses some of the abrasive grains from the wheel and so the operator must constantly keep the wheel dressed with new abrasive grains in order to keep consistent shape and surface condition for precision centerless grinding.
The three-part position
It takes a proper three-part positioning of the grinding wheel, regulating wheel, and the workblade that supports the bar(workpiece) to perform thorough and accurate grinding. The method towards having perfect results and great production of centerless grinding is the consistency of gap between the wheels and placement of workblade upon the centerline to determine the surface finish and diameter perfection of the bar.
One good thing about this grinding operation is that the setup is much less daunting and complicated than other machining operations. In addition, the application of automated centerless grinding, like that of CNC and servemotor technology makes it all the work even easier and has less time-consuming exercise – which leads to the production of bars and parts in fast lead times!