CN110548925B

CN110548925B - Manufacturing method of annular abrasive sawing original wire

Info

Publication number: CN110548925B
Application number: CN201910864669.8A
Authority: CN
Inventors: 李国生
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-09-09
Filing date: 2019-09-09
Publication date: 2020-05-29
Anticipated expiration: 2039-09-09
Also published as: CN110548925A

Abstract

The invention relates to a manufacturing method of an annular abrasive sawing original wire. The method comprises the steps of 1) extracting a loop wire from a wire casing wheel according to the perimeter of the required loop wire to serve as a core wire without cutting off; 2) the head and the tail of the core wire are staggered by more than 200mm, wound into a ring shape and fixed; 3) continuously extracting the wire of the wire wheel as a folded wire, starting to take the core wire as a shaft from the tail part of the core wire, spirally winding, simultaneously performing detwisting movement until the folded wire is wound to a circle after exceeding the tail part of the core wire, cutting off 200mm ring wires with staggered heads and tails, repeating the steps until the folded wire is wound by 6 circles around the core wire, and stopping winding when the last circle exceeds the tail part of the core wire by about 100 mm; 4) coating brazing filler metal on the head and tail connection parts after winding, and performing laser welding; and (5) polishing the joint part to remove redundant brazing solder. The invention reduces 2 joints to 1 joint; 1 joint is handled, is difficult to form free spine, does not hurt people, and easy to use, and the performance uniformity of each part of loop is improved the most, and the pitch is inseparable.

Description

Manufacturing method of annular abrasive sawing original wire

Technical Field

The invention relates to a manufacturing method of an annular abrasive sawing original wire.

Background

The existing market is all 7 joints, the loop wire is manufactured by a manual weaving method, the manufacturing method can not realize automatic production and has low production efficiency, and because a straight line is firstly made, when the loop wire is needed, a section of straight line is cut according to the perimeter of the needed loop wire, the twisted straight line with a certain length is twisted for the same length, one side of the twisted straight line is cut off, the other side of the twisted straight line is wound into a hollow groove reserved by the twisted and cut off twisted straight line, and a joint is formed; the six joints are wound in turn, and the 6 joints formed by the joints and the strands of the finally added core wires are 7 joints in total, so that the tensile strength is not reduced too much at one place, so that in practice each joint is different from front to back by 100-200mm, but in any case, the tensile strength at the joints is different from that of other loop wires without joints by more than 20%. Resulting in very poor overall tensile strength uniformity of the loop wire. Because the loop wires are connected too many, a proper joint processing method is not found, and the joints can only be in a free state, the 7 joints not only reduce the tensile strength of the loop wires, but also expose one end or two ends of the joints if the joints are touched in subsequent processing, and the core wires and the strands are thin and can hurt people like needles; in subsequent applications, the loop wire is rotated at high speed and subjected to large alternating stress, joints can cause the loop wire to be failed integrally at any time, but the weaving method is that an infinite length of 1X7 steel wire rope is wound firstly, so the pitch relation between strands is almost zero, so that after the loop wire is manufactured successfully, the strands have very obvious displacement before and after the action of cutting friction force in the using process, and in actual use, customers always emphasize the winding tightness.

The existing patent similar to my invention proposes that the core wire is welded firstly, and then 6 strands of folded yarns are wound on the core wire, the method is difficult to implement, firstly, a single wire rope is thin, when the core wire is welded, the joint is difficult to achieve the tensile strength of the original wire due to the welding characteristic, and furthermore, the tensile force of the core wire during winding is difficult to adjust after welding.

Disclosure of Invention

In view of the above, the present invention provides a method for manufacturing a circular abrasive sawing wire.

In order to solve the problems in the prior art, the technical scheme of the invention is as follows: a manufacturing method of an annular abrasive sawing wire is characterized by comprising the following steps:

1) extracting a loop wire from the wire chase wheel according to the perimeter of the required loop wire to be used as a core wire without cutting off;

2) the head and the tail of the core wire are staggered by more than 200mm, wound into a ring shape and fixed;

3) continuously drawing a wire of the wire grooved pulley as a folded wire, starting to take the core wire as an axis from the tail part of the core wire, starting to wind the wire by a left spiral or a right spiral, wherein the pitch is 2-4.5mm, simultaneously carrying out detwisting movement until the wire is wound to exceed the tail part of the core wire by a circle, then cutting off 200mm circular wires with staggered heads and tails, repeating the steps until the folded wire is wound by the core wire by 6 circles, and finally, stopping winding when the last circle exceeds the tail part of the core wire by about 100 mm;

4) uniformly coating brazing filler metal on the head and tail connection parts after winding;

5) welding the joints coated with the brazing filler metal by laser;

6) and after welding, thoroughly polishing the joint part by using fine sand paper, and removing redundant brazing materials.

The core wire is fixed end to end and is clamped by a clamp.

Compared with the prior art, the invention has the following advantages:

1. the performance consistency of all parts of the loop line is improved to the maximum extent, and the thread pitch is compact;

2. the invention reduces 2 joints to 1 joint; 1 joint is handled, is difficult to form free spine, does not hurt people, easy to use.

3. According to the invention, the brazing filler metal is coated on the final welding position, most of the heat generated by welding is absorbed by the coating, the tensile strength or breaking tension of other strands and core wires is not influenced, the tensile strength is uniformly distributed on the whole loop wire, and the integral consistency of the breaking tension of the loop wire is greatly improved;

4. the invention polishes the welding point by using fine sand paper, so that the wire diameter of the welding point meets the wire diameter requirement of a circular wire, burrs can be removed, and the welding wire is smooth and does not scratch hands.

5. The folded yarn and the core yarn are one yarn, when the core yarn is wound into a ring shape, the head and the tail of the folded yarn are staggered by 200mm and fixed, a temporary core yarn fixing point is formed, the core yarn meets the requirement of a looped yarn, the core yarn is not welded, the phenomenon that welding caused by direct welding is not firm, the core yarn cannot bear large tensile force, and the looped yarn is easy to break is avoided, so that the rate of finished products of the looped yarn is ensured, the tail of the core yarn is also connected with a wire groove wheel, so that the winding starting point of the folded yarn is fixed, in the process of winding the folded yarn, the folded yarn has certain spring property and contraction tendency, along with the continuous increase of the tension of the looped yarn, most of the broken core yarn at last ends of welding points of the core yarn is not provided with joints, and the folded yarn has certain flexibility, so that the tension of the yarn can be automatically adjusted, and the smooth.

6. The steps of the method for manufacturing the loop wire are completely automated from beginning to end, so that the production efficiency is greatly improved, the yield is ensured, the loop wire abrasive wire becomes a basic cutting tool, and a solid foundation is laid for the popularization and the application of the loop wire abrasive wire.

Drawings

FIG. 1 is a view of a loop joint immediately after the strand has been wound;

FIG. 2 is a view of the core thread end and the strand end after being welded together;

1. a core wire; 2, folding the yarns; 3. brazing filler metal or other alloys applied to the head; 4. and (7) welding joints.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The invention relates to a manufacturing method of an annular abrasive sawing original wire, which comprises the following steps:

1) extracting a loop wire from the wire chase wheel according to the perimeter of the required loop wire to be used as a core wire 1 without cutting off;

2) the head and the tail of the core wire are staggered by more than 200mm and wound into a ring shape and fixed by a clamp;

3) continuously drawing a wire of the wire grooved pulley as a folded wire 2, starting to take the core wire as an axis from the tail part of the core wire, starting to wind by a left spiral or a right spiral, wherein the pitch is 2-4.5mm, simultaneously carrying out detwisting movement until the folded wire is wound to exceed the tail part of the core wire by a circle, then cutting off 200mm circular wires with staggered heads and tails, repeating the steps until the folded wire is wound by the core wire by 6 circles, and finally, stopping winding when the last circle exceeds the tail part of the core wire by about 100 mm;

5) welding the joint coated with the brazing filler metal by using laser or butt welding which can meet the requirement;

The method of the invention enables a loop wire to be made into 0.2mm, when the diameter of the loop wire is 0.2mm, the diameter of a core wire and a folded yarn is 0.07mm, if a core wire is welded by a 0.07mm wire, the welding technology is very difficult to realize according to the current welding technology, the requirement on the welding technology is very high, the requirement on the performance cannot be met after welding, and the folded yarn cannot be directly wound after being directly welded on a winding device, the core wire needs to be additionally processed, the requirement on the circumference of the loop wire is more, the relative circumference is larger, even if the wire with the diameter of 0.07mm is welded, the wire cannot be smoothly arranged on the device to wind the folded yarn, although corresponding similar patents are proposed for nearly 4 years, and corresponding products do not appear in the market.

When the method is used for winding the loop wire, the screw pitches of the former strand wire and the latter strand wire are strictly consistent, the screw pitches of the 6 strand wires are mutually influenced to form a unified whole, and the failure of the loop wire due to falling of coated abrasive particles caused by looseness caused by high-frequency alternating stress in subsequent use is avoided.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims

1. A manufacturing method of an annular abrasive sawing wire is characterized by comprising the following steps:

5) welding the joints coated with the brazing filler metal by laser;

2. The method of claim 1, wherein the method comprises the steps of:

the core wire is fixed end to end and is clamped by a clamp.