Inductor structure for special-shaped ultra-hard abrasive grinding wheel ultra-high frequency induction brazing and heating method

Abstract

The invention discloses an inductor structure for special-shaped superhard abrasive grinding wheel ultra-high frequency induction brazing and a heating method. The inductor structure comprises a magnetizer and a heating induction coil, wherein the induction coil is a double-circuit line, the double-circuit induction coil comprises a first coil for preheating and a second coil for brazing, wherein the first coil and the second coil are placed above the outer circumference of a grinding wheel base body in the axis direction of a grinding wheel; the first coil and the second coil have shape following structures which are consistent with the surface of the grinding wheel base body, and the shape following structures comprise concave parts and convex parts; the magnetizer is arranged at each of the concave parts of the second coil. On one hand, the induction coil adopts the shape following structures, and the induction brazing is carried out on the grinding wheel base body to greatly shorten the production cycle of a formed grinding wheel and reduce deformation of the base body; on the other hand, the magnetizer is embedded in the hard-to-heat zone in a forming surface in an effort to reduce magnetic flux leakage in a magnetic circuit and to change the magnetic field distribution, so that the problem that the temperature of the forming surface is not distributed uniformly can be solved.

Description

technical field [0001] The invention relates to the field of superhard abrasive tools, in particular to an inductor structure for ultrahigh frequency induction brazing of large-size special-shaped superhard abrasive grinding wheels. Background technique [0002] At present, the special-shaped grinding wheels used in actual production are generally made by single-layer electroplating process. The coated metal is only mechanically embedded in diamond abrasive grains, and there is no firm chemical metallurgical bond between the abrasive grains and the substrate. The holding force of the tool is not large. When the processing load is large, the tool is prone to overall failure due to the shedding of abrasive grains or the peeling off of the plated metal. If you want to increase the bonding force between the abrasive grains and the coating metal, you can only increase the thickness of the coating metal. As a result, the chip space and the exposure height of the abrasive grains ar...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem of uneven temperature distribution during induction heating of forming grinding wheels, the present invention provides an inductor structure and induction heating method for ultra-high frequency induction brazing of special-shaped superabrasive grinding wheels, which can realize the forming surface along the axis direction of the grinding wheel The temperature is evenly distributed, and the production cycle of the forming grinding wheel is also greatly shortened

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