Deburring bores is an important and also difficult machining step. In vehicle manufacturing (e.g. engine and hydraulic parts), poor deburring can lead to severe damage or failure, which in turn poses a high safety risk.
Deburring bores is complex because it is not just the bore entrance and exit that must be deburred. Bores can also be combined with intersecting bores or stepped or deep bores. They are often difficult to reach and the diameters of the bores can be very small.
Bore machining is usually performed directly after the cutting process in the same machining center. In most cases, this involves the removal of a slightly adhering burr and slight edge rounding.
Osborn internal brushes such as our Helituf® and Situft® products, which can be used in dry and wet applications, are suitable for this purpose. Interior brushes are self-centering in the bore. This means that exact positioning and alignment of the components or the brush are not required. Tool holding is by means of a clamping shank for tool holders with chucks (Weldon or Whistle Notch). We can also offer cylindrical shanks for collets.
The correct application parameters for the internal brush are decisive for the quality of the deburring result. It depends on the correct oversize of the brush to the bore, but also on how the brush is moved in and out of the bore. Our experts are at your disposal and will be happy to advise you!