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The key factors that maximize the grinding performance of the cutting blade are good shaping and sharpening (commonly known as trimming) tools and skilled finishing techniques. In fact, an operator with high-quality dressing tools and the skill of trimming the cutting piece can always maintain the cutting piece with high grinding performance. Rather than relying solely on the purchase of so-called good cut pieces. This is very important because the shop cannot be equipped with special cutting blades for each person's operation.
The sharpening process is a sharp process of sharpening the abrasive grains of the super-hard abrasive cutting piece. In this process, it is necessary to remove the binder between the abrasive particles and the blunt cutting blade abrasive grains, so that the abrasive grains having the strong grinding performance protrude from the bonding agent to form a sharp cutting edge. The sharpening must also remove minute materials from the pores on the surface of the 6 inch es cutting disc, prevent the grinding force acting on the cutting piece from increasing, and the grinding force on the cutting piece increases, which will cause vibration and cause surface burn of the part.
Without proper sharpening, even the best cutting blades are not likely to achieve high quality and dimensional consistency of the machined parts. In fact, when you invest in high-quality cutting blades, 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 cutting piece, which is carried out simultaneously with the sharpening of the ordinary cutting piece. For superabrasive cutting dicing, the two processes are performed separately, first shaping the dicing sheet. In the use of superabrasive cutting disc grinding, shaping is performed using a shaping tool or a roller. The sharpening is often a trimming rod using a ceramic bond. After the shaping is completed, the cutting piece is sharpened.
Before the cutting piece includes shaping and sharpening, it is important to ensure that the spindle bearing is at a certain temperature (such as the normal cutting blade grinding state). This avoids damage to the part geometry and abnormal wear of the cutting blades and dressing tools. Tools for dressing must be handled with care because they are generally made of hard, wear-resistant but brittle diamond material and are very sensitive to minor impacts, microcracks and breakage caused by forces.
Because the diamond shaper itself is a tool, it needs to be very sharp. Using a blunt finisher to trim the surface of the cut piece will make the cut piece dull. In order to maintain a high quality and sharp diamond dressing tool, it is necessary to rotate a single point or a tapered tip dressing tool at 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.
Most cylindrical grinders place parts and cut pieces on a horizontal line. The highest point of the outer circle of the part and the highest point of the outer circle of the cutting piece are called part/cutting piece contact points, and the diamond dressing tool should trim the cutting piece as close as possible to the contact point of the part/cutting piece. For cutting inserts for internal grinding machines, it is even more important to trim the diamond dressing tool near the highest point of the outer circle of the cutting piece (ie, the part/cutting piece contact point when grinding holes).
In order to reduce the dressing time, there seems to be a temptation to choose a larger depth of repair. This is a very wrong idea. The high quality cutting disc supplier must be trimmed by selecting the most appropriate trimming depth. Choosing too large a refining depth results in high cutting temperatures, reduced dresser life, and the removal of useful cutting sheets. The end result is that both the trimmer and the cutting blade are damaged, which is counterproductive.
The optimum dressing amount is that after several repairs, it can restore the geometry of the cutting piece and just produce a good grinding edge..jpg)
