Laser grinding wheel trimming device with double tangential liquid column flows and trimming method thereof

Abstract

The invention relates to a laser grinding wheel trimming device with double tangential liquid column flows. The laser grinding wheel trimming device comprises computer control equipment (4), a control operating platform (5), a fiber laser device (6), a laser ablation head (7), a three-dimensional moving platform (8), an ultrahard abrasive grinding wheel (9), a grinder (10), a lower tangential thin water pipe (11), a lower tangential liquid column pressure controller (12), a right tangential thin water pipe (13), a laser beam (14), the lower tangential liquid column flow (15), the right tangential liquid column flow (16), a right tangential liquid column pressure controller (17) and a focusing lens (18). The auxiliary double-tangential-liquid-column-flow device is provided, so that the energy accumulation effect is suppressed, and energy balance in the trimming process is improved. In addition, a liquid film is formed on the surface of a grinding wheel, so that heat loss of an evaporation effect is reduced, the use ratio of laser is improved, and surface quality of the trimmed grinding wheel is improved.

Description

Technical field [0001] The invention relates to a super-hard abrasive grinding wheel dressing device and a dressing method, in particular to a grinding wheel laser dressing device with double tangential liquid column flow and a dressing method. Background technique [0002] Super-hard abrasive grinding wheels refer to cubic boron nitride and diamond grinding wheels, which have extremely high hardness and strong wear resistance, but because of their extremely high hardness, dressing is very difficult. Therefore, in order to make the ultra-thin and super-hard material grinding wheel can maintain the geometric shape and the sharpness of the abrasive grains during the cutting process, it needs to be trimmed regularly. Traditional mechanical trimming methods such as figure 1 Shown (such as turning method, extrusion method, rolling method) are based on the "hard-to-hard" effect of force, so there are fatal flaws, that is, the efficiency is very low, the dressing tool wears serious, and...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the deficiencies and defects of the prior art, a grinding wheel laser dressing device with double tangential liquid column flow and its method are invented. In the grinding wheel dressing, the water-liquid cooling effect is used for the first time, and the emulsified liquid is added to form a laser dressing on the surface of the grinding wheel. A layer of liquid film can improve the surface evaporation of the liquid, expand contact heat dissipation, and promote radiation heat exchange. Under the action of double tangential liquid column flow, the occurrence of phase explosion on the surface of the grinding wheel under the action of high-power laser ablation is suppressed, and the splash is reduced. Re-solidification avoids clogging pits, inhibits the movement of the solid-liquid phase interface in the superheated layer after the end of the pulse laser, suppresses the energy accumulation effect, and avoids the secondary heat conduction of the bonding agent and abrasive under high-power laser ablation. Defects such as microcracks and graphite metamorphic layers, thereby improving the surface quality after reconditioning

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