One of the most common types of form dressers is a radius form dresser. This is a dresser that is used to create a specific radius on the grinding wheel. You will find a radius form dresser in full ball radius and half ball radius options. At Lieber & Solow, we are proud to be a part of the diamond tool manufacturing community and provide customers with a range of products, such as shape and form dressers. Get in touch with us today to learn more about the radius form dressers for diamond tools that we have available.
Rotary Form Dresser vs Profile Dresser?
There is a distinction between rotary form dresser and a rotary profile dresser. The form dresser will generate the shape the grinding wheel requires by using a two-axis contour dressing operation. Compare this to a profile dresser, which integrates the required shape into its design. Due to this integration, the profile dresser moves along one axis and then plunges into the same.
Why Choose a Rotary Form Dresser?
When it comes to flexibility, the rotary form dresser is the way to go. It is the most flexible option for the cylindrical and surface grinding operation, since it can generate many different shapes. All with the same dressing tool. When you use just a profile dresser, you are more limited since it only has one profile. However, the profile dresser is more applicable for high-volume productions since you are repeating the same process over and over again. The automotive and aerospace industries use the profile dresser often for manufacturing purposes.
A rotary form dresser often only features one row of diamonds around their periphery. The diamonds have a precisely lapped radius that has to be entered into the control. This action generates an exact dressing path that will create the right profile on the grinding wheel. These dressers will cover a great variety of profiles to be dressed. Depending on the grinding task at hand, different peripheral designs can be used.
The two directions are synchronous and asynchronous dressing. The selection of the rotary direction impacts the entire workpiece. And the relative speed between the grinding wheel and the roller dresser will greatly influence the grinding wheel’s topography or surface roughness.
- Synchronous Dressing: The grinding wheel and the roller dresser will move in the same direction at the point of contact. And the resulting grinding wheel surface roughness is rougher than in asynchronous. When grinding, a courser wheel roughness is beneficial, since it makes the grinding wheel more cool cutting and aggressive. Due to these features, it is less likely to burn the workpiece.
- Asynchronous Dressing: The grinding wheel and the roller dresser will move in opposite directions at the point of contact with a smoother grinding wheel surface since there is only a small variation in the surface roughness. On top of that, an asynchronous dressing produces a much finer wheel roughness.
Due to the overall differences between synchronous and asynchronous dressing, it is usually recommended to dress in synchronous mode. The use of asynchronous dressing if the surface requirements simply cannot be met with synchronous or if the dressing unit drive is weak.