In fact, an operator with high-quality dressing tools and skill in dressing the wheel can always maintain the China cutting disc for metal with high grinding performance. Rather than relying solely on the purchase of so-called good grinding wheels. This is very important because the workshop cannot be equipped with a special grinding wheel for each person’s operation.
Sharpening is a process of sharpening the abrasive grains of a super-hard abrasive wheel. In this process, it is necessary to remove the binder between the abrasive particles and the blunt abrasive wheel abrasive grains, so that the abrasive grains having strong grinding performance protrude from the bonding agent to form a sharp cutting edge. Sharpening must also remove tiny materials from the pores on the surface of the grinding wheel to prevent the grinding force acting on the grinding wheel from increasing, and the grinding force on the grinding wheel is increased, which will cause vibration and burns on the surface of the part.Without proper sharpening, even the best grinding wheels are not likely to achieve high quality and dimensional consistency of the machined parts. In fact, when you invest in high-quality grinding wheels, it is very important to trim them well in order to achieve high grinding performance.
Shaping can be said to be part of the preparation of the grinding wheel, which is carried out simultaneously with the sharpening of the ordinary grinding wheel. For super-abrasive grinding wheels, the two processes are carried out separately, first shaping the grinding wheel. In the grinding with superabrasive grinding wheels, the shaping is carried out using a shaping tool or a roller. The sharpening is often a trimming rod using a ceramic bond. After the shaping is completed, the grinding wheel is sharpened.
Before the grinding wheel includes shaping and sharpening, it is important to ensure that the spindle bearing is at a certain temperature (such as the normal grinding state of the grinding wheel). This avoids damage to the part geometry and abnormal wear of thealuminum flat cutting disc and dressing tool. Care must be taken with the tool for dressing as it is generally made of a hard, wear-resistant but brittle diamond material and is very sensitive to minor cracks and small cracks and breakage caused by force.
Because the diamond shaper itself is a tool, it needs to be very sharp. Using a blunt trimming tool to trim the surface of the wheel will blunt the wheel. In order to maintain a high quality and sharp diamond dressing tool, it is necessary to rotate the single point or tapered tip dressing tool 1/8 turn at regular intervals. The number of rotations can be determined according to the trimming situation, and according to experience, it is rotated at least once a day. For chisel heads and shaped dressing tools, it is generally necessary to rotate 180° before they are blunt.