METHOD FOR PROVIDING AN ABRASION RESISTANT CUTTING EDGE AND TRIMMING DEVICE HAVING SAID CUTTING EDGE

摘要

A method for manufacturing a toothbrush filament trimmer includes providing a cutter and a counter knife each comprised of hot-working steel, wherein the cutter and the counter knife include at least a recess suitable to carry a coating to form a cutting edge; depositing a first material onto the at least one recess of the cutter and/or the counter knife to form a first layer; depositing a second material onto each first layer to form a second layer, wherein at least a carbide of at least one element of the fourth, the fifth, the sixth and/or the seventh group of the periodic table is used as the second material; and sharpening the coating comprising the first layer and the second layer applied to the at least one recess of the cutter and/or to the at least one recess of the counter knife, wherein a cutting edge is formed.

主权项

1. A filament trimming device for cutting filaments of a toothbrush comprising:
a cutter in combination with a counter knife, wherein each of the cutter and the counter knife comprises hot-working steel and includes at least one cutting edge, wherein the at least one cutting edge comprises a coating including at least a first layer and a second layer comprising at least a carbide of at least one element of the fourth group, the fifth group, the sixth group and/or the seventh group of the periodic table, wherein at least one of the cutter and the counter knife includes a recess formed adjacent to the cutting edge thereof, said recess being shaped to carry the abrasion-resistant coating totally to form a sharp cutting edge, and wherein said recess has dimensions to completely fit the coating so that a surface of the cutting edge have no rough edges thereon.