CNC machining has revolutionized the manufacturing industry, making it possible to produce highly precise and complex parts with ease. However, even with the advanced technology, achieving the required tolerances, surface finishes, and geometries is not always possible through CNC machining alone. Enter abrasive grinding. Grinding is a critical secondary operation that allows manufacturers to achieve the desired properties on the part surface that cannot be achieved through CNC machining.
In this blog post, we will explore the role of abrasive grinding in the production of CNC machined parts. We will also discuss the different types of grinding processes and how they contribute to the quality and performance of CNC machined parts.
What is Abrasive Grinding?
Grinding is a process of material removal that involves the use of an abrasive material to wear down the part surface to the desired shape, finish or tolerance. Unlike cutting, grinding removes material through a mechanical process that relies on the interaction of abrasive particles with the workpiece surface.
There are different types of grinding processes that manufacturers use to achieve specific results. These include:
1. Surface Grinding
This involves the use of a horizontal spindle machine that grinds the surface of a flat workpiece using abrasive particles that are embedded within a grinding wheel. The grinding wheel rotates on its axis, creating friction as it comes into contact with the workpiece surface.
2. Centerless Grinding
This process is used to grind cylindrical parts that have no centers or features that can serve as reference points for locating the part on the grinding wheel. The workpiece is placed between two wheels, one of which rotates the part while the other grinds it.
3. Internal Grinding
This process is used to grind the inside diameter of a part, such as a pipe or a gearbox housing. The grinding wheel is shaped to match the contour of the internal surface of the part, allowing for precise grinding of the required surface finish.
The Role of Abrasive Grinding in CNC Machining
CNC machining is used to create the initial shape and features of the part. However, it may not be possible to achieve the desired properties such as surface finish, tolerance, and geometry through CNC machining alone. Abrasive grinding is used as a secondary operation to achieve these properties.
Grinding allows manufacturers to remove any deformations, burrs, or roughness on the part surface that are left over from the machining process. This improves the surface finish and ensures that the part meets the required tolerances. Additionally, grinding allows manufacturers to produce precise geometries that may not be achievable through CNC machining.
Conclusion
In conclusion, abrasive grinding is an essential process in the production of CNC machined parts. It is the final step that ensures the part conforms to the required surface finish, tolerance, and geometry. Manufacturers must choose the appropriate grinding process to achieve the desired results. By partnering with a reputable CNC machine shop, you can be sure that your parts will receive the necessary grinding treatment to perform at their best. If you're looking for quality machined parts, get in touch with us today.