What is meant by centerless grinding?
In centerless grinding, the workpiece is held between two grinding wheels, rotating in the same direction at different speeds. One grinding wheel is on a fixed axis and rotates so that the force applied to the workpiece is directed downward.
What is infeed grinding?
Infeed grinding is a method of grinding in which the part is held stationary while the wheel is fed into the workpiece. Infeed grinding is used to grind parts with relatively complex shapes with multiple diameters and tolerances.
How do you set up a centerless grinder?
To enable the centerless grinding process to create rounding action on the workpiece, it must be placed above the centerline of the wheels. In this setup, high spots no longer create diametrically opposed low spots. Instead, the high spots are ground and a gradual rounding of the workpiece takes place.
What is the purpose of the regulating wheel in centerless grinding?
The regulating wheel determines the workpiece’s rotational speed. Tilt it a few degrees and the workpiece will be pulled through the wheels and out the back of the machine, a technique known as through-feed grinding. Infeed grinding is the second technology available for centerless grinding.
What are the types of centerless grinding?
There are three forms of centerless grinding, differentiated primarily by the method used to feed the workpiece through the machine.
- Through-feed. In through-feed centerless grinding, the workpiece is fed through the grinding wheels completely, entering on one side and exiting on the opposite.
- End-feed.
- In-feed.
What is traverse grinding?
Traverse grinding operation is when the wheel is fed parallel to the surface being machined. Plunge grinding operation is when the wheel is fed perpendicular to the surface being machined. Plunge grinding is normally applied using a formed grinding wheel to impart the shape of the grind wheel on the workpiece.
What is in feed centerless grinding?
In-feed centerless grinding, also known as plunge grinding, is conducted by placing a part on the work rest and radially feeding the part into the grinding wheel with the regulating wheel. In-feed grinding is used when a part has one portion that is larger than another.
How does centerless grinding different from cylindrical grinding?
The major difference between centerless and cylindrical grinding machines is that centerless grinding machines do not require fixtures, only inserts for supporting the workpiece and additional guide wheels to drive the workpiece for grinding, but cylindrical grinding does not require inserts and uses centers and …
What is the function of regulating wheel?
The regulating wheel is most often made of hard rubber and abrasive and its role is instrumental in moving the part being ground through the grinder by either a Through-feed or In-feed process.
What are the advantage of centerless grinding?
Fast loading: Compared with centered grinding, centerless grinding allows for exceptionally short loading times, resulting in nearly nonstop grinding. No need to reset equipment: After you set up your centerless grinding equipment, you can usually complete the full production run without needing to reset it.