Typically.SprocketsDivided into 24 teeth evenly distributed, the angle between two teeth is 15 °, the end of one tooth shape is the starting point of the next tooth shape. In practice, after each milling of a tooth, the coordinate system will be rotated by a certain angle, and then continue milling reduces the programming workload.
In order to simplify the sprocket wheel machining program, the relative coordinate instruction G91 is used to rotate the coordinate system, and the writing of the calling subroutine for each tooth can be omitted. Programming is based on the processing of one tooth, and the end point of one tooth processing program is the starting point of the next tooth processing, and so on.
Distinguished from its use, the sprocket can be divided into active sprocket and driven sprocket two kinds, the active sprocket and the output shaft of the engine in the form of a spline combination, and fixed with a spline stopper or nut. When disassembling, the sprocket cover can be removed and the chain can be removed, and then the spline stopper or fixed nut can be screwed down to pull out the small sprocket. For assembly, proceed in the reverse order.
And the removal of the driven sprocket starts from supporting the main support frame, so that the rear wheel is cocked; then loosen the rear wheel axle fastening nut and adjuster nut, remove the chain box and chain; followed by the removal of the rear brake lever, pull out the rear wheel assembly together, and together with the removal of the bolts, nuts or retaining rings that fix the sprocket, remove the sprocket from the rear wheel hub or pin bolts.