Precision Machining with Abrasive Brushes

For consistent, reliable, and repeatable precision machining, companies turn to nylon-based abrasive brushing systems from the Cleveland Deburring Machine Company. Abrasive brushes have been around for many years and are commonly used in all types of finishing processes. At CDMC, we know that there is a continuous need for consistent, reliable machining in any manufacturing process. Abrasive brushes can be used as a precision machining process that holds incredible tolerances. In addition, abrasive brushes offer a cost-effective, time reducing machining method that is capable of complimenting many types of workpieces and solving many of the problems and challenges of edge finishing.

For those who are not familiar with abrasive brush machining, it is worth knowing that these power brushes are fabricated from a wide variety of filaments. The brushes themselves can be configured as radial (wheel type), disc (cup type), bottle type, or other shape configurations. Each brush filament is made by mixing nylon and an abrasive grain – which may include silicon carbide, ceramic media, Cubic Boron Nitride (CBN), or diamond – which is then extruded to create the brush filaments. The unique component materials, as well as the extrusion process, allow the abrasive elements to be present throughout each of the filaments. And as each filament of each brush naturally wears, fresh abrasive grain is revealed – prolonging the life and functionality of each brush.

There are many physical variables present in each type of brush, allowing for endless combinations that allow the brushes to perform in almost any application. Abrasive brush variables include diameter, density, configuration, and trim length. Bristle filament types can be rounded, crimped, or rectangular. Additionally, grit size, filament diameter and concentration (ratio of abrasive grains to nylon) all play a role in the end result. Minor adjustments can be made to the brush variables that can result in significant changes in brush performance.

Nylon abrasive brushes typically work only on the edges of a workpiece – with the exception being through the use of ceramic media. Ceramic is designed to be more aggressive and can remove base material when brushed heavily.

When brush placement and control of engagement are set properly (where the edge of the brush is perpendicular to the workpiece), precision machining with abrasive brush filaments can be easily achieved (and repeated) with high tolerance control.

It should also be noted that precision machining with abrasive brushes requires control over variables. This is critical. Tolerances of .0001” can be held with abrasive brushes. The conditions under which these tolerances are held will be highly controlled. Specialized machines are available to perform these tasks and achieve these results time and time again.

As stated earlier, abrasive brush machining is a cost-effective, time reducing machining method. Machining variables range from one consistent and qualified brush to the next, as well as the controlled machine parameters that monitor and adjust the engagement, and dwell time and position of the workpiece.

At the Cleveland Deburring Machine Company, we provide the quickest delivery, the most cost-effective solution, and the best customer service in the industry. Contact us today with your deburring application needs and see what CDMC can do for you.