Passivation mechanism and method of diamond cutter

Abstract

The invention discloses a passivation mechanism and method of a diamond cutter. The passivation mechanism comprises a frame, a bracket, a grinding disc, a driving device, a transmission device and a control device, wherein the driving device consists of a motor and a belt pulley; the transmission device consists of a belt pulley and a transmission shaft; a grinding cavity is arranged on the frame (14); an air inlet pipe (9) is arranged on the grinding cavity; the shaft end of the transmission shaft (10), which is fixedly connected with the grinding disc (2), is arranged in the grinding cavity in an extending way; a heater (3) is arranged below the grinding disc; the upper end of the grinding disc can be in contact with the diamond cutter (1) at the bottom end of a clamp (7); the upper end of the clamp extends out of the grinding cavity and is connected with a dynamometric strain gauge (5) arranged on the bracket (4); and optical fiber (6) which is connected with the control device (13) is arranged in the clamp. When the diamond cutter is passivated, the temperature of the grinding disc is 700-900 DEG C; under the atmosphere condition of hydrogen, the rotation speed of the motor is 20-200r/min and the grinding time is 3-20s, and a 3-50mum blade arc can be obtained; and the passivation mechanism and method disclosed by the invention have the advantages of high passivation efficiency, good effect and low cost.

Description

technical field [0001] The invention relates to a passivation mechanism and a passivation method of a diamond tool, belonging to the technical field of precision cutting. Background technique [0002] Diamond tools are widely used in many fields due to their good wear resistance and long service life. But its biggest disadvantage is its high brittleness. During use, due to the very strong cutting force on the blade, it is easy to break the knife, which will quickly reduce or fail the quality of the tool, which directly affects the precision and roughness of the product. The core technology to solve this difficult problem is to passivate the blade to improve the strength of the blade. At present, the blunt edge method commonly used in the industry is to use a brush containing diamond abrasives to brush the edge. This method is very effective for carbide tools, but it is not suitable for diamond tools, because diamond tools are resistant Good abrasiveness, it takes about an ...

AI Technical Summary

Problems solved by technology

At present, the blunt edge method commonly used in the industry is to use a brush containing diamond abrasives to brush the edge. This method is very effective for carbide tools, but it is not suitable for diamond tools, because diamond tools are resistant Good abrasiveness, it takes about an hour to grind out a 3-5 micron blunt fillet, and because of the high brittleness of the diamond tool, the blunt round of this method often produces chipping and even damages the tool

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