Annular super-hard abrasive wire and preparation method and device thereof

Abstract

The invention provides an annular super-hard abrasive wire, and a preparation method and a preparation device thereof. The annular super-hard abrasive wire comprises an annular wire rope and a super-hard abrasive layer fixedly connected to the surface of the annular wire rope, the annular wire rope comprises an annular core wire and a plurality of strands of plied yarns spirally wound on the annular core wire, and the plied yarns are steel wires obtained after a steel wire rope is split; and through cooperation of a revolution gear and an autorotation gear, the condition that the plied yarns are spirally wound on the annular core wire in the axial direction of the annular core wire, meanwhile, required angle changes exist in the circumferential direction of the core wire, and automatic winding of the plied yarns on the annular core wire for multiple circles is achieved. After the steel wire rope is split, the steel wire rope is used for plied yarn winding, the service life of a fretsawis prolonged, automatic winding of the plied yarns on the annular core wire for multiple circles is achieved, and the production efficiency is improved.

Description

technical field [0001] The invention relates to the field of cutting tools for precious metals, semiconductors and non-conductors, in particular to an annular superhard abrasive wire and its preparation method and preparation device. Background technique [0002] Brittle and hard materials such as silicon, sapphire and ceramics are difficult to cut with ordinary processing methods because of their high hardness and brittleness. However, band saws are used to cut and square, and the cutting efficiency is high, but the kerf is wide and the cutting surface is uneven. To solve the above problems, diamond wire saws are gradually produced. [0003] CN102873401B discloses a ring-shaped superabrasive wire and a preparation method thereof, including a ring-shaped wire rope, the wire rope includes a core wire and six strands of metal filaments twisted on the core wire, and the joints of each strand are evenly arranged on The two sides of the core wire contact or separately set on the...

AI Technical Summary

Problems solved by technology

[0002] Brittle and hard materials such as silicon, sapphire and ceramics are difficult to cut with ordinary processing methods due to their high hardness and brittleness.

However, band saws are used to cut and square, and the cutting efficiency is high, but the kerf is wide and the cutting surface is not smooth. To solve the above problems, diamond wire saws are gradually produced.

[0003] CN102873401B discloses a ring-shaped superabrasive wire and a preparation method thereof, including a ring-shaped wire rope, the wire rope includes a core wire and six strands of metal filaments twisted on the core wire, and the joints of each strand are evenly arranged on The two sides of the core wire contact or separately set on the same side of the core wire contact; during the preparation, it is necessary to manually connect the head and tail ends of the six strands, which is a heavy workload and cannot guarantee the quality of the strands butt joint

However, this structure first prepares the annular core wire of the required length, and then winds the strands, and this strand winding method not only requires the strands to be helically wound on the annular core wire along the axial direction of the core wire, but also requires that the strands be wound along the core wire during winding. Precise angle changes in the circumferential direction can ensure that the outer peripheral walls of two adjacent strands in the same circle are in contact and arranged in sequence, but they are not overlapped with each other, which is not easy for automatic production. Manual winding is often used, and the effective efficiency is low.

[0005] In addition, most of the strand wires in the prior art are linear wires. If they are wound on the annular core wire, the linear wires are prone to stress concentration, which reduces the fatigue resistance and service life of the wire saw.

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