Grinding wheel dressing tools and dressing conditions have a significant impact on wheel dressing quality, not only affect the grinding wheel shape and sharpness of sharpening, but also affect the grinding wheel wear, grinding force, grinding temperature and the surface integrity of grinding parts . In the actual production, generally based on the accuracy of the workpiece requirements, the nature of the wheel, the workpiece material and processing methods to determine the dressing methods and dressing tools.

    (1) diamond dressing. Diamond dressing is to diamond as a tool, that is, large pieces of diamond inlaid in a special diamond arbor, with the form of cutting to dress wheel method. Dressing wheel, the diamond knife mounted on the grinder in a special dresser, the vertical knife to carry out dressing. As the diamond hardness is very high, sharp edges and corners, grinding wheel can be trimmed correctly and meticulously, can obtain high processing precision and very fine surface roughness. Therefore, it is one of the most commonly used dressing methods.

    With diamond dressing wheel should pay attention to the following matters:

    ① must be a reasonable choice of the size of diamond particles. Diamond size should be based on the size of the wheel to select, under normal circumstances, the wheel diameter of 100mm in the following, optional 0.25 karats of diamond. Diamond wheel diameter of 100mm or more, the election 0.1-1 carat diamond.

    In order to make the dressing of the grinding wheel sharp and smooth, the tip of the diamond must be kept sharp, the tip of the study into 70 ° - 80 ° sharp angle.

    ③ Before and during installation, always check the diamond welding is strong and whether there are cracks, so as not to repair the loss of diamond.

    ④ diamond rod installed in the wheel dresser, the extension of the length to be short, clamping to be strong, so as to avoid jitter when dressing, affecting the quality of finishing.

    ⑤ Diamond and grinding wheel contact point should be lower than the wheel axis 1-2mm, diamond rod upward tilt 10 ° ~ 15 °, while horizontal axis tilted with the wheel 15 ° ~ 30 °, so that when turning the diamond grinding wheel negative Angle and the main angle, the turning effect is better. Diamond must not be mounted on the wheel axis above, otherwise, under the action of grinding force in the diamond tip will pierce the wheel, or in the dressing of the diamond vibration. If the installation is too low, the force is too small, affecting the dressing diamond play a sharp role. At the same time because of the installation angle exists, but also can keep sharp sharp corners of the diamond, such as a direction grind, and for a direction can be used, can improve the service life.

    ⑥ according to processing requirements to determine the amount of repair. Coarse grinding, grinding wheel surface roughness, this can increase the dressing of the depth of the knife and trim the lead. Fine grinding, on the other hand, the smaller the dressing dressing lead, grinding wheel surface repair more smooth, abrasive micro-blade, such as the higher the better. Fine finishing, the general infeed into the horizontal feed 2-3 times, and then in the case of no feeding for several repairs.

    ⑦ dressing should be fully cooled, do not allow intermittent pouring coolant, so as to avoid sudden and cold diamond abrasions, dry grinding dressing, the repair should be paused after a few times, so that the diamond can be cooled.

    (2) diamond pen finishing. Diamond pen is a small particle by the diamond or diamond powder with a strong combination of the alloy together, pressed into the special made of metal arbor. According to the distribution of diamond, there are three types of diamond pen: layered diamond pen - diamond particles layered distribution; chain diamond pen - diamond particles into a chain distribution; powder diamond pen - diamond particles were irregularly distributed .

    There are many factors that affect the dressing quality, such as the edge  shape of the diamond, the wear resistance of the diamond, the dressing parameters (trim feed rate, wheel dressing speed, dressing depth), dresser, wheel characteristics Type, hardness, particle size, texture, binder) and grinding fluid.