With the birth of new materials, tool life has also doubled, but the cost of new materials and tool manufacturing costs are not slow growth, manufacturers and consumers who use a large number of tools will not bring double profits. After years of research and practice, a new simple tool treatment process: inverted blunt. It can double the life of the tool.
Provide guarantee for processing quality
The newly produced tool manufacturers generally need to ensure the sharpness of the tool edge, but due to the different materials and processing techniques of the tool, the sharpness of the tool cannot be achieved, generally less than 4 µm. The same tool and the same front will also produce an error greater than 1µm. Such a tool will produce a front opening when used in a processing, thereby reducing the processing quality. In particular, the phenomenon of coated tool bursting is very common, which sometimes leads to the damage of the tool and the workpiece. In addition, the machining error of the new tool and the old tool will increase with the wear of the tool front, which reduces the consistency of the quality of the processed product.
And after the dull treatment of the tool can basically avoid the above problems, in the dull at the same time will shave in the production of the tool burrs and droplets, the workpiece is smooth and polished, so that the tool is more beautiful, and increase the surface hardness and smoothness of the tool, greatly improve the smoothness of the cutting. Especially in the coating before the passivation treatment of the tool, the coating will be more uniform, greatly reducing the blade coating at the mouth of the danger. Professor Dika has conducted a lot of research and experiments on rotary machining tools, such as drills, taps and milling cutters, and summed up the feasibility of the obtuse and the huge economic benefits that can be brought from theory to practice.

DF polishing machine produced by Otec company in Germany
degree of wear
After the inverted blunt process of the tool can basically avoid the above problems, and the inverted blunt at the same time will shave the burrs and droplets generated in the production of the tool, so that the tool is more beautiful, but also increased the surface hardness and precision of the tool, greatly improving the smoothness of the cutting. Especially before the coating, after passivation treatment of the tool, the coating will be more uniform, greatly reducing the risk of coating at the blade. Professor Dicka has conducted a lot of research and experiments on rotary machining tools (such as drills, taps and milling cutters, etc.), and summed up the feasibility of the blunt and the huge economic benefits that can be brought from theory to practice.
Machinable workpiece length increases
The inverted blunt treatment is divided into physical processing methods, heat treatment methods and chemical treatment methods. * Affordable is the physical processing method, such as using the DF polishing machine produced by the German Otec company for blunting.
DF polishing machine makes the cutting tool rotate in the abrasive to meet the requirement of dullness. Its advantage is that it also carries out burr and polishing treatment on the workpiece at the same time of dullness. It can be used according to the set processing time and steering procedure, and different abrasives can be used to dullness the cutting tool of any material, with simple and flexible operation.
Blunting technology has been widely used in Germany. German Mercedes-Benz Motor Company has a machining center that uses more than 80 drilling and milling tools. The original tools that have not been blunt treated need to be updated after 100h of machining. After using the tools treated with inverted blunt, the processing time is extended to 240h, which improves the processing efficiency and reduces the processing cost.