Periodic surface structure may be formed by polishing. The lithographic printing method using a laser can be obtained, or the shape of a structuring element. Compared with sheet metal processing, and is currently in the process of cutting these methods are not common. A theoretical basis for this method is that the microstructure of the heat transfer can be reduced between the chip and the tool and reduce the heat load of the tool.
PVD coating finish. Polishing process belongs to modification of surface topography. Surface grinding of the coating or a variety of different polishing methods. In addition to large quantities of parts for Troyes polishing, as well as commonly used in the production of brush cutter method and blasting method. These methods are not novel and have been used for many years in the production of the cutting inserts, such as for polishing a thick CVD coating cauliflower-like surface structure. The polished cutting insert after 6 minutes of cutting time showed a very uniform wear. Shows the blade without a polishing parallel to the micro-cracks, which can lead to rapid wear band broadening, and early failure of the tool.
These methods are often used for polishing PVD coating. As in the processing surface of the insert hole of a PVD coating, the structure can be seen in PVDARC method is called "droplets" in. The role of these droplets as riverbed stone chips hinder the exclusion process, which is particularly disadvantageous in the hole machining. If less friction and can quickly exclude the chip, the contact time between the chip and the tool is reduced, the heat transfer to the tool is also reduced. Unhindered chip exclude that the cutting force is smaller, avoiding the chips in bits, cutter grooves produce bite and clogging. Depends on the quality of the polishing process parameters adjustment options and polishing methods.
Polishing process can extend the life of the tool, so they took a twist drill head, for example. A desk for final inspection and the development of measuring instruments can measure the friction of the chip slot. Reduction in friction with the surface condition related. 25%. Treated drill drill polished groove friction coefficient only unpolished allows higher cutting parameters and drilling depth.
