SECTION 2 -BRUSH DESIGN, MANUFACTURE AND APPLICATION
Question 2:4 Why Do Brushes Have Top Or Bottom Angles?
Because of the required clearance between the brush and the holder which allows the brush to move from side to side within the brush holder there can sometimes be a tendency for the brush to become slightly unstable, particularly where vibration exists.
The problem usually becomes evident by brush chatter or rattle accompanied by increased intermittent arcing.
Top angles on radial brushes are to promote side thrust to the brush improving stability in the brush holder by holding the brush against one internal face of the holder.
The top angle is best applied to machines which run continually in the specific direction and have the brush gear set up accordingly.
Brush holders that are set at an angle to the commutator will normally require top and bottom angles.
The reasons and supposed benefits of "trailing" holders and "reaction" holders and the appropriate angles of setting have been the subject of much differing opinion by machine designers. This is not discussed here, but further information is available if required.
Question 2:5 Why Are Brush Split?
The information has been drawn from experience of Morganite Taiwan Limited Application Specialists combined with a wide range of published information from major carbon supplier and motor manufacture. However, the material can not be downloaded, copied or used without written permission.
以上資訊為台灣慕根耐公司應用工程專家提出, 未經書面許可請勿下載複製及引用