Electrodeposited diamond dresser for forming threaded abrasive tool for gear grinding and method for manufacturing same

Abstract

The present invention provides an electrodeposited diamond dresser for forming a threaded grindstone for gear grinding capable of high-precision dressing and having a long life. Equipped with: a grinding wheel (2), which is formed into a disc shape with a tapered surface (21) on both sides of the outer peripheral part in a manner that becomes thinner toward the outer peripheral surface; a diamond abrasive grain layer (3), which is formed on the outer peripheral edge of the tapered surface The part is extended, and a plurality of small-diameter diamond abrasive grains are plated through the coating; a plurality of mounting grooves (5), which are formed on the outer peripheral surface of the grinding wheel, have two wall surfaces in the groove that become a predetermined angle; and polyhedral single crystal diamond abrasive grains (4) It is formed into a granular shape larger than the small-diameter diamond abrasive grains, and has mounting crystal planes (M1, M2) equal to the specified angle, and is installed on the two wall surfaces (51a, 51b) of the groove when the mounting crystal planes are installed. When the surface parallel to the peripheral surface of the grinding wheel does not become the crystallization of the cleavage plane, the installation crystal surface of each polyhedral single crystal diamond abrasive grain is plated on the two wall surfaces in the groove of the installation groove of the grinding wheel by the coating (32).

Description

technical field [0001] The invention relates to an electrodeposited diamond dresser for shaping a threaded grinding tool for grinding gears and a manufacturing method thereof. Background technique [0002] There are thread-like (worm-type) parts in grinding tools for grinding gears, and the dresser for thread-shape molding is particularly required to be precise. [0003] The dresser described in Patent Document 1 includes two tapered acting surfaces for dressing the tooth flanks of the threaded grinder and an outer peripheral acting surface for dressing the bottom of the thread of the thread of the threaded grinder. Small-diameter diamond abrasive grains are arranged on the above-mentioned action surface. [0004] According to Patent Document 1, which is a prior art, a pair of dressers are arranged on the rotating shaft separated by a predetermined length, and each dresser is used with two tapered action surfaces in contact with different tooth side surfaces of the worm-typ...

AI Technical Summary

Problems solved by technology

[0006] However, in Patent Document 1, in order to improve the accuracy of dressing, the width of the outer peripheral action surface formed by the tapered surfaces on the front and back of each dresser is narrowed.

If the tooth flanks and bottoms of the threads of the worm-type grinding tool are dressed with this narrow outer peripheral action surface, there is a problem that the life of the dresser as a dresser is shortened due to the loss of small-diameter diamond abrasive grains due to a large contact load.

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