WO2013027303A1

WO2013027303A1 - Wire rod, wire rod manufacturing method and coiling member

Info

Publication number: WO2013027303A1
Application number: PCT/JP2011/078481
Authority: WO
Inventors: 恭一岩田
Original assignee: 新東工業株式会社
Priority date: 2011-08-22
Filing date: 2011-12-08
Publication date: 2013-02-28
Also published as: JP5704242B2; TWI580528B; CN103534063A; TW201309424A; CN103534063B; JPWO2013027303A1

Abstract

A wire rod manufacturing method, wherein a wire rod having improved fatigue strength is manufactured from a wire rod having a flaw on the surface by machining the surface. By pressing the wire rod, together with an abrasive, against elastic bodies and moving the wire rod and/or the elastic bodies in the longitudinal direction of the wire rod, grooves parallel in the longitudinal direction are made in the wire rod, and the wire rod with reduced harmful unevenness and improved fatigue strength is obtained.

Description

Wire rod, wire rod manufacturing method and coiling member

The present invention relates to a wire having a cross-sectional shape of a circle, a substantially circle, an ellipse, a polygon, an irregular shape, etc., and improved fatigue strength, a wire manufacturing method for manufacturing the wire, and a coiling member using the wire. .

Conventionally, the surface of a wire obtained by wire drawing processing in which a wire is passed through a die mainly for the purpose of adjusting the wire diameter has been adjusted by one of the following methods. In other words, the surface of the wire is formed by a pickling technique in which the wire is immersed in chemicals and chemically washed for the purpose of making the surface of the wire glossy and removing the scale adhered to the surface of the wire. Sometimes. Further, as a physical method, a surface may be formed by processing by a shot blasting method in which iron-based particles are mainly collided with a wire to remove scale.

However, the surface of the wire described above is mottled and intermittent irregularities are formed. For example, in pickling, intermittent unevenness is generated on the surface of the wire due to the difference in the amount of corrosion between the fast reacting portion and the slow reacting portion. In shot blasting, dents due to collision of the projection material remain as they are, and intermittent irregularities are formed on the surface of the wire. Further, in the wire drawing process, when passing through a die, the unevenness formed on the surface of the wire is removed to some extent and is smoothed, but the recessed portion remains as it is. That is, the wire is in a state having a depression in the smooth surface.

When a wire frame forming component or a spring component that requires fatigue strength is formed using such a wire material, the irregularities on the surface of the wire material may be the starting point of destruction. Unevenness on the surface of the wire becomes a factor that reduces the life of these components.

JP 2003-181761 A

In this technical field, there is a demand for a wire material in which harmful irregularities existing on the surface of the wire material are reduced and fatigue strength is improved, a wire material production method for obtaining such a wire material, and a coiling member using the wire material.

The wire according to one aspect of the present invention is provided with a plurality of grooves parallel to the longitudinal direction by being pressed against the elastic body together with the abrasive and moving at least one of the wire itself or the elastic body.

A wire manufacturing method according to another aspect of the present invention is a wire manufacturing method for manufacturing a wire with improved fatigue strength by processing a surface from a wire having a scratch on the surface, and pressing the wire against an elastic body together with an abrasive. By moving at least one of the wire or the elastic body in the longitudinal direction of the wire, a groove parallel to the longitudinal direction is given to the wire.

The coiling member according to still another aspect of the present invention uses at least a portion formed in a ring shape or a spiral shape by winding the wire, using the wire or the wire produced by the wire production method. Including.

Harmful unevenness present on the surface of the wire can be reduced, and the fatigue strength of the wire can be improved, and the life of various parts such as a coiling member using the wire can be increased. .

It is a front view of the wire processing apparatus suitable for the wire manufacturing method which concerns on embodiment. It is a top view of the wire processing apparatus of FIG. FIG. 3 is a cross-sectional view taken along line AA shown in FIG. It is a figure for demonstrating the modification (example which has a scraper means) of the wire processing apparatus of FIG. It is a front view of the wire processing apparatus of a modification. FIG. 5 is a sectional view taken along line BB shown in FIG. FIG. 6 is a view showing a link constituting scraper means of the wire rod processing apparatus, and is a view taken along the line CC in FIG. It is a perspective view of the other example of the wire processing apparatus suitable for the wire manufacturing method which concerns on embodiment. It is a front view for demonstrating the wire travel drive means used with the wire processing apparatus of FIG. It is a front view of the wire processing apparatus of FIG. It is a perspective view of the rotary sliding contact body which comprises the wire rod processing apparatus of FIG. It is sectional drawing which shows the cross section orthogonal to the wire of the wire processing apparatus of FIG. 7 with the cross section of a wire. (A) is sectional drawing of the state to which the rotation sliding contact body was moved to D2 direction. (B) is sectional drawing of the state to which the rotation sliding contact body was moved to D1 direction. It is sectional drawing for demonstrating the direction which each rotation sliding contact body and wire of the wire processing apparatus of FIG. 7 contact. (A) is sectional drawing of the state which the 1st group and the 3rd group moved to the D1 side, and the 2nd group and the 4th group moved to the D2 side. (B) is a cross-sectional view of a state in which the first group to the fourth group are in the center in the movement range. (C) is sectional drawing of the state which the 1st group and the 3rd group moved to the D2 side, and the 2nd group and the 4th group moved to the D1 side. It is a figure explaining the modification of a wire processing apparatus. (A) And (b) is the front view and side view which show the relationship between the rotary sliding contact body and wire in the example shown in FIGS. 7-12 prior to a modification. (C) and (d) change the positional relationship of the rotating sliding contact with respect to the examples shown in FIGS. 7 to 12, and there is a portion where the rotating sliding contact wraps when viewed from the wire travel direction. It is the front view and side view which show the relationship between the rotary sliding contact body and wire in the modification arrange | positioned in this way. It is a figure explaining the modification of the rotation sliding contact body which comprises a wire processing apparatus. (A) is a side view of the rotating sliding contact body used in FIGS. 7 to 13 prior to the modification, and (b) is an example of the rotating sliding contact body used in FIGS. It is a side view of the rotation sliding contact body of the modification which deform | transformed so that a sliding contact surface might bulge toward an outer side. It is the figure which expanded the surface state of the wire of the comparative example 1 for comparing with the wire of an Example. It is the figure which expanded the surface state of the wire of the comparative example 2 for comparing with the wire of an Example. It is the figure which expanded the surface state of the wire of Example 1. FIG. It is the figure which expanded the surface state of the wire of Example 2. FIG. It is a schematic diagram for demonstrating the ratio of the area of the groove part formed with the abrasives in the surface of a wire, (a) is a figure which shows the surface state before a process, (b) is a process. It is a figure which shows the surface state after.

Hereinafter, the wire according to the embodiment will be described with reference to the drawings. In the following description, the wire means a long object whose cross-sectional shape is circular, substantially circular, elliptical, polygonal, irregular, or the like. Moreover, although it is assumed that the wire is made of a metal such as a spring material or an electric wire, it may be made of glass fiber such as an optical fiber, nylon wire such as a fishing line, or other resin.

The wire according to the embodiment is a wire that is pressed against an elastic body together with an abrasive and is provided with a plurality of grooves parallel to the longitudinal direction by moving at least one of the wire itself or the elastic body. In the wire, harmful irregularities are reduced, and fine grooves in a certain direction are continuously provided, so that fatigue strength is improved.

The wire may have a wire diameter of 0.6 to 2.8 mm, and an average depth of the groove may be less than 1/1000 of the wire diameter and less than 10 μm. Here, the wire diameter means the length of the widest portion in the cross section orthogonal to the longitudinal direction of the wire. When the wire diameter is less than φ0.6 mm, the longitudinally applied parallel grooves serve as fracture starting points for fatigue fracture, and it is difficult to obtain the effect. In addition, when the wire diameter is increased, the processing resistance increases due to the fact that the processing by the wire processing apparatus, which will be described later, is “by pressing the elastic body”, and it becomes necessary to enlarge the apparatus. Considering this point, the maximum diameter of the applied wire may be set to φ2.8 mm, for example, so that proper processing can be performed with an appropriate apparatus. Note that the range of the cross-sectional area may be defined instead of the above-described range of the wire diameter. That is, the wire has a cross-sectional area of 0.25 to 8.0 mm ² , and the same effect can be obtained even if the average depth of the groove is less than 1/1000 of the wire diameter and less than 10 μm. It is done. Further, the average depth of the groove means a ten-point average roughness shown in JIS B0601-1994.

Further, the mode of the diameter of the abrasive is 100 to 300 μm, and the wire may be formed by this abrasive. The diameter of the abrasive is a diameter obtained by a method using a sieve net according to JIS R6010. The “mode” is a peak value in the particle size distribution, and depends on the opening of the standard sieve JISZ8801. When a small abrasive of less than 100 μm is used, the surface roughness of the wire surface can be reduced, but the polishing ability is inferior, so that an abrasive of 100 μm or more may be used. Further, if an abrasive exceeding 300 μm is used, the surface roughness becomes large and a new fracture starting point may be generated. Therefore, an abrasive of 300 μm or less may be used. The average diameter of the abrasive is about 125 to 250 μm.

Further, the abrasive may contain at least one of silicon carbide, alumina, garnet, and diamond.

Further, the hardness of the wire may be 10 to 68HRc (C scale of Rockwell hardness), and the hardness of the abrasive may be larger than the hardness of the wire. A soft wire less than HRc10 may be broken due to processing resistance in the method of pressing an elastic body using a wire processing apparatus described later. Moreover, the wire material exceeding HRc68 is too hard, and the surface which brings about an effect may not be produced | generated by the processing method using the below-mentioned wire processing apparatus. This range corresponds to a Vickers hardness of Hv 190 to 940.

Moreover, the material of the wire may be any one of high carbon steel, stainless steel, copper alloy, titanium alloy, and tungsten alloy.

Further, the area of the groove formed by the abrasive on the surface of the wire may be 75% or more with respect to the entire surface area of the wire. “The area of the groove formed by the abrasive on the surface of the wire is 75% or more of the entire area of the surface of the wire” means that the groove is not formed by the abrasive and scratches remain. It is assumed that the obtained area is less than 25% of the entire area. For example, it is assumed that the surface shape after processing becomes the original surface shape (before post-die processing) as shown in FIG. In FIG. 19B, the part indicated by Gr indicates a part processed by the abrasive, that is, a groove part. On the other hand, a portion indicated by Un indicates an unprocessed portion, that is, a remaining scratch portion. In other words, the above description means that a value (Gr / (Gr + Un)) obtained by dividing the sum of Gr by the sum of Gr and Un is 75% or more. Hereinafter, “the ratio of the area of the groove portion formed by the abrasive on the surface of the wire to the total surface area” represented by the value (Gr / (Gr + Un)) is also referred to as “cover ratio”. In FIG. 19B, since the cover ratio is about 50%, the processing is actually further advanced and the Gr area is increased.

As described above, the wire according to the embodiment has an advantage that fatigue strength is improved by forming various shapes on the surface of the wire and reducing harmful dents that can be a starting point of fracture. Furthermore, when a continuous groove is provided in the region of 75% or more of the wire circumference in the longitudinal direction of the wire, the circumferential depression harmful to the twist of the wire is further reduced, and the fatigue strength is reduced. There is an advantage that it is further improved.

Furthermore, the uniform groove continuously provided in the longitudinal direction of the wire can reduce the friction coefficient of the wire due to its shape. For this reason, when the wire is processed by coiling or the like, the processing resistance can be suppressed to a small value, and the tool tip can be prevented from being seized.

In addition, since the wire is processed in a uniform direction, a plastic fluidized bed in a certain direction is formed in the layer near the surface. Therefore, depending on the material of the wire, the effect of improving the corrosion resistance is brought about.

By the way, the effect of the uniform groove continuously given in the longitudinal direction of the wire becomes more effective as it is given to the entire region of the wire circumference. However, when the groove is applied to the entire region (area) of the wire rod circumference, the number of processing steps increases, and the state in which the groove is applied to a region of about 75% of the wire rod circumference and It is set to an appropriate state in consideration of the fact that the effect when the groove is provided in the above-described ratio of the region is gradually approaching. That is, when a continuous groove in the longitudinal direction of the wire is provided in a region of 75% or more of the wire circumference, there is an effect of obtaining sufficient fatigue strength with an appropriate processing man-hour.

In addition, since the continuous groove in the longitudinal direction of the wire rod may return to be a starting point of breakage if it is too deep, the groove depth may be less than 1/1000 of the wire rod diameter, or it is thick with a diameter of 4 mm or more. In the wire, the groove depth may be less than 10 μm. Thereby, appropriate fatigue strength can be obtained.

Further, the elastic body used for providing the groove may be, for example, a belt shape or a roller shape, and the contact portion with the wire may be displaced by rotation. This configuration is advantageous in that the consumption of the elastic body itself is dispersed. In addition, you may make it an elastic body reciprocate a block-shaped thing.

Further, the abrasive used for providing the groove may be a simple substance or a mixture of alumina, ceramics, glass powder, silica powder, metal powder, or the like. The abrasive may be harder than the hardness of the wire. The abrasive may be any material that can cut the surface.

As described above, according to the wire formed by being pressed against the elastic body together with the abrasive and moving at least one of the wire itself or the elastic body, harmful irregularities existing on the surface of the wire are reduced. It is possible to improve the fatigue strength of the wire. For example, a wire having a wire diameter of 0.6 to 2.8 mm, a plurality of parallel grooves formed in the longitudinal direction, and an average depth of the grooves being less than 1/1000 of the wire diameter and less than 10 μm, It is possible to reduce harmful irregularities present on the surface of the wire and to improve the fatigue strength of the wire. And it can implement | achieve extending the lifetime of various components, such as a coiling member using this wire.

Next, a method for manufacturing the above-described wire will be described. The wire manufacturing method which concerns on embodiment is a wire manufacturing method which processes the surface of the wire which has a damage | wound on the surface, and manufactures the wire with improved fatigue strength. In this method, the wire is pressed against the elastic body together with the abrasive, and at least one of the wire and the elastic body is moved in the longitudinal direction of the wire, thereby giving the wire a groove parallel to the longitudinal direction. Before the above processing, the die is passed for adjusting the wire diameter. In other words, the above-mentioned “wire having a scratch on the surface” is the wire after passing through the die.

In the wire manufacturing method, at least a pair of elastic bodies may be provided so as to sandwich the wire, and the relative speed in the longitudinal direction between the wire and the elastic body may be 40 m / min or more.

As mentioned above, according to the wire manufacturing method which concerns on embodiment, the harmful unevenness which exists in the surface of the obtained wire can be reduced, and it can implement | achieve improving the fatigue strength of a wire. And it can implement | achieve extending the lifetime of various components, such as a coiling member using this wire. According to this method, it is possible to obtain a wire whose entire surface is uniformly processed by mechanical processing using powder (abrasive). Since this method does not use chemicals used for pickling or the like, the environmental load can be greatly reduced. Also in this method, the characteristic structure similar to that described for the wire rod is effective, and the same effect can be obtained.

Furthermore, the wire manufacturing method uses a

wire processing apparatus

1 or 101 that processes the surface of a traveling wire, and manufactures a wire with improved fatigue strength by processing the surface from a wire having a scratch on the surface. It has the characteristics. The wire rod processing apparatus 1 will be described with reference to FIGS. The wire rod processing apparatus 101 will be described later with reference to FIGS.

First, a wire rod processing apparatus 1 shown in FIGS. 1 to 6 suitable for use in the wire rod manufacturing method according to the embodiment will be described. The wire processing apparatus 1 is provided with at least two or more pairs, each of which has a cylindrical sliding contact surface, and slidably contacts the sliding contact surface while being rotated with respect to the traveling wire. A rotating sliding contact body (for example, elastic rollers 3 and 4) capable of sandwiching a wire between a pair and a proximity separation driving means (for example, a driving means) for driving the pair of rotating sliding contact bodies in directions toward and away from each other. 5).

As shown in FIG. 1, the

elastic rollers

3 and 4 are provided in two pairs, with the

rotation shafts

3 a and 4 a extending in the front-rear direction being parallel to each other and pivotally supported to face each other. Three or more pairs may be provided. Each pair of

elastic rollers

3 and 4 is arranged at an appropriate interval in the vertical direction, can hold the wire 33 that is a long object, and can rotate in the moving direction of the wire 33 or in the opposite direction. ing. The drive means 5 moves the

elastic rollers

3 and 4 toward and away from each other, and is provided at four locations here.

Further, the wire rod processing apparatus 1 includes a rotation driving unit (hereinafter referred to as “rotating unit 6”) that rotationally drives the rotating sliding contact body (elastic rollers 3 and 4), an abrasive material charging unit (not shown), Humidifying means 7. The rotating means 6 rotates the

elastic rollers

3 and 4. The abrasive throwing means throws a powdery abrasive between the paired elastic rollers 3 or between the paired elastic rollers 4. The humidifying means 7 is arranged as shown in FIG. 2 and humidifies the

elastic rollers

3 and 4. The wire rod processing apparatus 1 shown in FIGS. 1 to 3 may be configured to be provided with scraper means as a modification. Specifically, a plurality of scraper means 21 as shown in FIGS. 4 to 6 may be provided. The plurality of scraper means 21 are arranged on the outer sides of the

elastic rollers

3 and 4 so as to be able to peel foreign matter adhering to the

elastic rollers

3 and 4.

As shown in FIG. 2, the driving means 5 includes bearing members 8 and 9 that are mounted around the

rotary shafts

3 a and 4 a, and a lateral cylinder 12 that is connected to the bearing members 8 and 9 via link mechanisms 10 and 11. , 13. The rear end sides of the

cylinders

12 and 13 are pin-supported so as to be movable up and down at upper and lower ends of a bracket 15 mounted on the left and right outer surfaces of a box-like support frame 14. The support frame 14 is fixed. The upper and lower bearing members 8 and 9 are connected via a link mechanism 16.

As shown in FIG. 3, a gear unit constituting a part of the rotating means 6 is attached to the rear part of the

rotating shafts

3a, 4a. The gear unit includes

gears

17 and 18 that are respectively fitted to the

rotary shafts

3a and 4a, a pinion 19 that is arranged between the

gears

17 and 18, and an electric motor in which one pinion 19 is fitted to the output shaft (see FIG. Not shown). The pinion 19 is engaged, and the

elastic rollers

3 and 4 are rotated in a predetermined direction by driving the electric motor.

Further, as shown in FIG. 2, the humidifying means 7 attached to the support frame 14 is connected to the rear ends of the

rotary shafts

3a and 4a. The humidifying means 7 is formed in a large number of pores provided so as to penetrate the

elastic rollers

3 and 4 and the

rotary shafts

3 a and 4 a, one end communicating with the pores, and the other end supplying liquid via a conduit 20. And a through hole (not shown) connected to the source 35.

Here, a case where scraper means as shown in FIGS. 4 to 6 is provided as a modification will be described. As shown in FIGS. 4 and 5, the scraper means 21 is provided with a stepped support shaft 22 that is parallel to the

elastic rollers

3 and 4 and oriented in the same direction as these. The support shaft 22 is engaged with a guide member 24 having a large-diameter rear portion fixedly disposed. The scraper means 21 approaches and separates from each of the

elastic rollers

3 and 4. An annular scraper mounting member 25 is provided at the front portion of the support shaft 22. The scraper mounting member 25 is fitted so as to be rotatable only in the direction of an arrow via a built-in cam clutch (not shown). A plurality of scraper bodies 26 are attached to the outer surface of the scraper attachment member 25 at equal intervals.

Further, as shown in FIG. 5, a connecting shaft 27 is oriented in the same direction as the support shaft 22 and fixed concentrically with the rear end of the support shaft 22. As shown in FIG. 6, one end of an L-shaped link 28 is pin-connected to the other end of the connecting shaft 27 so as to be rotatable. The bending position of the link 28 is pivoted on a support member 29 that is fixedly arranged. The other end of the link 28 is pin-connected to the tip of a piston rod of a cylinder 31 pivoted on a fixed bracket 30 (see FIG. 4). By the expansion / contraction operation of the cylinder 31, the scraper mounting member 25 and the scraper 26 are brought close to or separated from the

elastic rollers

3 and 4, respectively.

Furthermore, on the front surface of the scraper mounting member 25, a plurality of receipts (not shown) are fixed so as to face the scraper body 26, respectively. Each of the receivers is pushed by the piston rod of the cylinder (not shown) separately fixed, and rotates the scraper mounting member 25 in the direction of the arrow. Thereby, the scraper main body 26 can be appropriately replaced.

Next, the operation of surface processing the wire 33 as a long object by the wire processing apparatus 1 as described above will be described. The wire 33 is sequentially passed between the two pairs of

elastic rollers

3 and 4, and the

cylinders

12 and 13 are extended to bring the four

elastic rollers

3 and 4 closer to each other. 33 is clamped with a force of a required size.

Next, the motor with a speed reducer of the rotating means 6 is driven so that the peripheral speed of the

elastic rollers

3 and 4 is faster or slower than the moving speed of the wire 33, and the

elastic rollers

3 and 4 are moved to the pinion 19 and the

gears

17 and 18. , And between the elastic rollers 3 and between the elastic rollers 4, a powdery abrasive is introduced from the abrasive introduction means.

At this time, the

elastic rollers

3 and 4 are deformed so that the portions in contact with each other in the peripheral edge are deformed to conform to the shape of the wire 33, and accordingly, the elastic roller 3 covers the wire 33 relatively long. become. At the same time, the moistening means 7 humidifies the

elastic rollers

3 and 4 to ensure that the abrasive is attached to the

elastic rollers

3 and 4. As a result, the abrasive is moved relative to the wire 33 by the

elastic rollers

3 and 4, and the wire 33 is rubbed and surface-treated.

When the cylinders 31 of the plurality of scraper means 21 are intermittently extended while the surface of the wire 33 is being rubbed, the scraper body 26 moves the

elastic rollers

3, 4 through the scraper mounting member 25. Each outer surface is in contact with the required length. Thereby, the foreign material adhering to each outer surface of the

elastic rollers

3 and 4 will be peeled off. Further, the scraper body 26 is replaced by appropriately extending and retracting a cylinder attached to the scraper mounting member 25.

In the above description, the foreign matter attached to the

elastic rollers

3 and 4 has been described as being peeled off by the scraper means 21, but the present invention is not limited to this. For example, the outer cylinder may be detachably mounted on the

elastic rollers

3 and 4 in advance, and the outer cylinder may be replaced when the outer cylinder is damaged or worn.

The wire rod processing apparatus 1 shown in FIGS. 1 to 6 as described above is suitable for use in the wire rod manufacturing method according to the embodiment, that is, the wire rod manufacturing method using the wire rod processing apparatus 1 is obtained as a wire rod. Harmful unevenness present on the surface of the wire can be reduced, the fatigue strength of the wire can be improved, and the life of various parts such as a coiling member using the wire can be extended. .

Next, the wire rod processing apparatus 101 shown in FIGS. 7 to 14 suitable for use in the wire rod manufacturing method according to the embodiment will be described. In the following description and the like, the conical shape includes a conical surface and a shape obtained by cutting the conical surface with a plane such as a plane parallel to the bottom surface. Here, the solution means a uniform mixture in a liquid state, that is, one obtained by dissolving one or more other substances (solid, liquid or gas) in one liquid. . Further, this solution includes a sol (colloidal solution).

The wire rod processing apparatus 101 includes a plurality of rotating sliding contact bodies 104 that have a conical sliding contact surface 105 and that slidably contact the sliding contact surface while being rotated with respect to the traveling wire rod 103. The rotary sliding contact body 104 includes one or more rotary sliding contact bodies that make sliding contact with the sliding contact surface from above the wire, and one or more rotary sliding contact bodies that make sliding contact with the sliding contact surface from below the wire rod. Have.

A wire rod processing apparatus 101 shown in FIG. 7 is a wire surface processing apparatus that processes the surface of a wire 103 that is a product to be processed, which is traveled by the wire travel driving means 102 shown in FIG. The wire rod processing apparatus 101 includes a plurality of rotating sliding contact bodies 104. The rotating sliding contact body 104 has a conical sliding contact surface 105 to which an abrasive is supplied, and causes the sliding contact surface 105 to slidably contact the traveling wire rod 103 while being rotated. That is, the wire 103 as the product to be processed is subjected to polishing processing by being brought into contact with the sliding contact surface 105 of the rotary sliding contact body 104 where the polishing material is present as will be described later. The rotating sliding contact body 104 may have a conical shape, but here has a truncated cone shape as shown in FIG. 10 and is a so-called polisher for polishing the wire 103.

The wire rod processing apparatus 101 further includes first and second sliding contact body driving means 106 and 107 as sliding contact body driving means for driving and moving the rotational sliding contact body 104 in a direction D parallel to the rotation shaft 104a. Yes.

As shown in FIG. 9, the plurality of rotating sliding contact bodies 104 are one or a plurality of rotating sliding contact bodies (hereinafter referred to as “upper rotating sliding contact bodies 104G1 and 104G2”) that make the sliding contact surface 105 slide from above the wire 103. And one or a plurality of rotating sliding contact bodies (hereinafter also referred to as “lower rotating sliding contact bodies 104G3 and 104G4”) that slide the sliding contact surface 105 from below the wire 103. Yes. As a modification of the present apparatus, in addition to the rotating sliding contact bodies 104G1 to 104G4, a rotating sliding contact body that slides in an oblique direction may be added.

The plurality of rotating sliding contact bodies 104 are arranged so that the rotating shafts 104a are parallel to each other (see FIG. 11). The plurality of rotating sliding contact bodies 104 are arranged so that the conical tapering directions of the sliding contact surfaces 105 are mixed in opposite directions. With such a configuration, as described later, the wire 103 can be slidably contacted from a plurality of directions, and the processing performance is improved. Here, the tapering direction indicates that the cross section orthogonal to the rotation axis is circular, but the diameter is decreasing. That is, here, since the rotary sliding contact body 104 is a truncated cone as shown in FIG. 10 and the like, it is directed from the large bottom surface 104c side where the bottom surface is large to the small bottom surface 104b side where the bottom surface is small. Show. When the taper direction is opposite to the opposite direction, it indicates that the direction in which the diameter decreases is different, in other words, as shown in FIG. 9, the large bottom surface and the small bottom surface are viewed from one side in the axial direction. Indicates mixing. Specifically, in the wire rod processing apparatus 101, the tapering direction is on the sliding contact body driving means side indicated by D2 in the drawing or the line work side (operator side) indicated by D1 in the drawing. In the drawing, Du indicates the upper side of the state where the apparatus is arranged, and Dd indicates the lower side.

Furthermore, here, there are a plurality of rotating sliding contact bodies 104G1 and 104G2 that slide the sliding contact surface from above the wire, and the conical taper direction of the sliding contact surface 105 is arranged in a mixed direction. There are a plurality of rotating sliding contact bodies 104G3 and 104G4 for sliding the sliding contact surface from below the wire, and the conical tapering directions of the sliding contact surface 105 are arranged so as to have opposite directions. Yes. With such a configuration, as shown in FIG. 12 and the like which will be described later, the wire 103 can be slidably contacted from four directions, the entire cross-section of the wire 103 can be processed evenly, and the processing performance is remarkably improved. Can be improved.

Of the rotating sliding contact bodies that make sliding contact with the sliding contact surface from above the wire rod, the tapering direction is the first direction D1, and the first group of rotating sliding contact bodies 104G1 is used. The second direction D2 that is the second direction D2, which is the opposite direction of the first direction D1, is referred to as a second group of rotating sliding contact bodies 104G2. Further, among the rotating sliding contact bodies that make sliding contact with the sliding contact surface from below the wire rod, the tapering direction is the second direction D2, and the third group of rotating sliding contact bodies 104G3 is used. The first direction D1 is defined as a fourth group of rotating sliding contact bodies 104G4. Here, the number of the rotating sliding contact bodies in each group is two, but may be one or three or more (a plurality).

The first and second sliding contact body driving means 106 and 107 rotate the second group and the fourth group when driving the first and third group rotating sliding contact bodies 104G1 and 104G3 in one direction. The sliding contacts 104G2 and 104G4 are reciprocated so as to be driven in opposite directions. Specifically, the first and second sliding contact

body driving units

106 and 107 include a fixed portion 111, a movable portion 112 movable in the directions D1 and D2 with respect to the fixed portion 111, and a movable portion 112 as D1, respectively. A guide rod 113 that guides the movable part 112 in the direction D2 and a cylinder 114 that drives the movable part 112 in the directions D1 and D2 are provided. FIG. 11 is a diagram showing the second sliding contact body driving means 107, but the first sliding contact body driving means 106 has the same configuration. In this way, each of the rotary sliding contact bodies 104G1 to 104G4 has one side of the central axis connected to the movable portion 112 of the first and second sliding contact body driving means 106, 107, and the other side of the central axis connecting the wire 103 to the wire. Open for setting in the processing apparatus 101. In the figure, D2 is the sliding contact body drive means side, and D1 is the wire rod set side (operator side).

The first sliding contact body driving means 106 has the first and third groups of rotating sliding contact bodies 104G1 and 104G3 attached to the fixed portion 111 so as to form one set, and these rotational sliding contact bodies 104G1 and 104G3 are attached. At the same time, it can be driven in the direction D1 or D2. The first group and the third group of rotating sliding contact bodies 104G1 and 104G3, which form one set, are arranged so as to sandwich the traveling wire 103 therebetween. The second sliding contact body driving means 107 attaches the second and fourth group rotating sliding contact bodies 104G2 and 104G4 to the fixed portion 111 so as to form one set, and these rotating sliding contact bodies 104G2 and 104G4 are attached. At the same time, it can be driven in the direction D1 or D2. The second group and the fourth group of rotating sliding contact bodies 104G2 and 104G4, which form one set, are arranged so as to sandwich the traveling wire 103 therebetween. In other words, the first group and the third group are a combination of rotating sliding contact bodies in which the buses of the portions facing each other are parallel and face upward (obliquely) in the D2 direction (sliding contact body driving means side). The second group and the fourth group are a combination of rotating sliding contact bodies in which the buses of the portions facing each other are parallel and face downward (diagonally) in the D2 direction.

The first and second sliding contact body driving means 106 and 107 drive the rotating sliding contact bodies to be driven in synchronism with the opposite directions of the D1 and D2 directions, respectively. As shown in c), the slidable contact surface is slidably contacted with the wire 103 from four directions, and the position of the slidable contact surface slidably contacted with the wire 103 is changed in a state where the entire circumference of the wire 103 can be processed evenly. can do. As a result, partial wear of each of the sliding sliding contacts 4G1 to 4G4 can be avoided, the processing performance can be maintained for a long time, and the life of the apparatus can be extended. Here, two sliding contact body drive means are provided, the first group and the third group are provided on one movable part, and the second group and the fourth group are provided on the other movable part. For example, even if the sliding contact body driving means for each group is provided, the same effect can be obtained if they are driven in synchronism as described above.

Incidentally, the rotary sliding contact body 104 is rotationally driven by a motor 121 and a drive gear 122 as rotational drive means. The rotational drive direction may be the same as or opposite to the drive direction of the wire 103, but here is, for example, the same direction. Specifically, one motor 121 is provided for each of the first and second sliding contact body drive means 106 and 107, and rotates a plurality of drive gears 122 as drive transmission means. The drive gears 122 are provided in the same number as the number of the rotating sliding contact bodies 104, and the rotational force generated by the motor 121 is transmitted to the rotating sliding contact bodies 104 so that each rotating sliding contact body 104 is rotated by the rotating shaft 104a. Rotate around.

Rotating sliding contact body 104 is formed of an elastic body having a Shore hardness of 40 to 90 and forming the sliding contact surface (Shore hardness test method JIS Z2246). The rotary sliding contact body 104 is disposed so as to sandwich the traveling locus of the wire 103. If it is lower (softer), the wear resistance will be worse, the replacement frequency will be higher, the pressing force to the wire (long object) 103 will be difficult to obtain, workability will also be reduced, and conversely if it is larger (hard), This is because the contact body 104 is not sufficiently distorted, so that there is a possibility that a part that is not partially processed in the cross section of the wire 103 may be formed. For example, as the rotating sliding contact body 104, butadiene rubber having a Shore hardness of about 60 is used, the maximum outer diameter is 100 mm, and the rotating sliding contact body 104 may be rotated at a rotation speed of 10 rotations per minute. At this time, the first and second sliding contact body driving means 106 and 107 moved the rotating sliding contact in the axial direction once in 60 seconds.

Moreover, the wire rod processing apparatus 101 includes a plurality of abrasive supply units 108 and a plurality of binder supply units 109. The plurality of abrasive supply units 108 are arranged above the plurality of rotating sliding contacts 104 and supply the abrasive to the sliding contact surface 105 from above. The abrasive material supply unit 108 includes, for example, a pipe-shaped supply unit, and supplies the abrasive material to the conical sliding contact surface 105 from the supply unit. The supply of the abrasive is performed continuously or intermittently. As the abrasive, for example, a material made of silicon carbide having a particle size of # 220 may be used, and the supply amount may be supplied to each rotary sliding contact body 104 by 1 cc every 40 seconds. In this case, an apparatus (not shown) for cutting out the abrasive material at regular intervals by reciprocating the abrasive material cutting head can be used. The abrasive may be a single substance or a mixture selected from alumina, ceramics, glass powder, silica powder (silicon carbide), metal powder, garnet, diamond and the like.

The plurality of binder supply units 109 supply a liquid or a solution for attaching an abrasive to the sliding contact surface 105. Here, the binder supply unit 109 is provided above and below the rotary sliding contact body 104, and supplies the binder in a mist form or directly and continuously or intermittently. Here, the binder supply unit 109 is, for example, a gas-liquid mixing nozzle connected to a compressed air source and a binder tank (not shown). Water may be used as the binder, and the supply amount may be supplied by an operation of repeating the spraying on the sliding contact surface 105 for 5 seconds and stopping for 1 minute. Note that the binder is an aqueous solution of a high molecular organic substance such as agar or saccharide, as long as the abrasive can adhere to the sliding contact surface 105. Further, if the abrasive adhered to the slidable contact surface 105 by the binder has an adhesive force that can be removed by contact with the wire 103, the removal of the abrasive used for processing and the supply of new abrasive are repeated. It is possible to make the degree of processing uniform.

Here, the configuration is such that the abrasive supply unit 108 and the binder supply unit 109 are provided. However, the same applies to the case where a slurry-like abrasive in which the binder is already mixed with the abrasive is supplied from the abrasive supply unit. The effect is obtained.

Furthermore, an abrasive may be kneaded and adhered to the surface of the rotary sliding contact body constituting the wire rod processing apparatus 101. In other words, the rotating sliding contact body may be formed of an abrasive or a material in which the abrasive is dispersed in a portion that forms the sliding contact surface. That is, in the present invention, the abrasive may be configured to exist on the sliding contact surface of the rotary sliding contact body. That is, as an aspect thereof, first, as described with reference to FIGS. 7 to 12 and the like, a mechanism for supplying an abrasive from the outside to the sliding contact surface of the rotating sliding contact body made of an elastic body is also provided. There is something. In addition, as an aspect thereof, there is one that is formed by firing an abrasive, and the entire rotary sliding contact body is made of an abrasive, such as a grinder of a disc grinder. Further, as an aspect thereof, an abrasive is kneaded into an elastic body and dispersed and blended, and like a sand eraser, there is an elastic force that can be adhered to the surface of the wire, and also has grinding power by the surface abrasive. is there.

In the wire rod processing apparatus 101 configured as described above, by causing the wire rod (long object) 103 to travel, the wire rod comes into contact with the sliding contact surface 105 of the rotating sliding contact body 104 where the abrasive is present. The surface of the wire 103 is polished while traveling in a horizontal state without changing the traveling direction as in the prior art.

The wire rod processing apparatus 101 as described above has a conical slidable contact surface 105 and a plurality of rotating slidable contact members 104 that slidably contact the slidable contact surface while being rotated with respect to the traveling wire rod 103. And the plurality of rotary sliding contacts 104 include one or more rotary sliding contacts that make sliding contact with the sliding contact surface from above the wire, and one or more rotational sliding contacts that make sliding contact with the sliding contact surface from below the wire. Having a body. The wire rod processing apparatus 101 realizes high-speed and non-uniform surface processing without giving a burden to the travel of the wire rod 103 by arranging the rotation sliding contact body and the shape of the sliding contact surface as described above. Can do. Moreover, since the wire processing apparatus 101 realizes surface processing with a mechanical configuration, it is possible to suppress an environmental load.

Further, according to the wire rod processing apparatus 101, it is possible to uniformly process the surface of the wire rod while keeping the traveling direction of the wire rod 103 substantially horizontal by devising the shape and arrangement of the rotating sliding contact body 104 as a polisher. Furthermore, there is an advantage that high-speed processing is possible. In addition, parts for lifting the wire upward are not required compared to the prior art, the number of parts is reduced, and there is no need for wiring work at high places, improving operability.

Further, the wire rod processing apparatus 101 can continue to supply the abrasive to the sliding contact surface 105 of the rotary sliding contact body 104 by the abrasive supply unit 108 and the binder supply unit 109, and the wire rod (long object) can be fed to the tip. Can be continuously processed from the end to the end without changing the processing quality.

Furthermore, the wire processing apparatus 101 has the sliding contact surface 104 made of an elastic body having a Shore hardness of 40 to 90 and the sliding contact surface 105 formed on the rotating sliding contact body 104, so that it can be appropriately deformed to cover most of the wire 103, and unevenness is caused. It can be processed so that there is no more.

Further, in the wire rod processing apparatus 101, the rotary slide contact bodies 104G1 and 104G2 that slide the slide contact surface from above the wire rod 103 are mixed so that the conical taper direction of the slide contact surface 105 is in the opposite direction. The rotating sliding contact bodies 104G3 and 104G4 that are arranged and make sliding contact with the sliding contact surface from the lower side of the wire 103 are arranged so that the conical tapering directions of the sliding contact surface 105 are opposite to each other. Accordingly, the wire 103 is held in a cross section orthogonal to the wire 103, and dropout that may occur due to vibration of the wire 103 during processing can be suppressed.

In addition, the wire rod processing apparatus 101 synchronizes with the second group and the second group when the sliding contact body driving means drives the first and third group rotational sliding contact bodies 104G1 and 104G3 in one direction. By reciprocating the four groups of rotating sliding contacts 104G2 and 104G4 so as to drive in the opposite direction, the wire 103 reciprocates on the bus bar of each rotating sliding contact 104, thereby suppressing local wear. Long life can be realized.

Further, in the wire rod processing apparatus 101, the rotary sliding contact body 104 can secure a space on the operator side D1, and the replacement work is simplified, and a simple reciprocating motion (by utilizing the feature of the shape of the rotary sliding contact body 104) ( By simply moving the rotating sliding contact body in the axial direction by the sliding contact body driving means, local wear of the rotating sliding contact body 104 can be eliminated, the replacement frequency can be reduced, and the running cost can be reduced. Can be realized.

Next, a wire rod processing apparatus 131 which is a modification of the wire rod processing apparatus 101 shown in FIGS. 7 to 12 will be described with reference to FIG. The wire rod processing apparatus 131 has the same configuration as the wire rod processing apparatus 101 described above except that the arrangement of the rotating sliding contact body 104 is changed. As shown in FIGS. 13 (a) and 13 (b), when the wire rod processing apparatus 101 is viewed from the wire rod traveling direction, the rotating sliding contact body is coincident with the opposing busbar or less than the width of the wire rod. It arrange | positions so that it may have a clearance gap. Here, seeing from the wire travel direction means a relationship in a plane including a cross section of the wire, for example, the relationship shown in FIG. 13B or 13B. Moreover, the width | variety of a wire means the width | variety in the opposing direction of this bus-line. That is, FIG. 13B shows right side views of the first group and the third group, but the rotating sliding contact bodies 104G1 and 104G3 of the first group and the third group are substantially coincident with each other. By being arranged in this manner, as described above, it is possible to process by sliding in a state where the wire 103 is sandwiched between the portions. The second group and the fourth group have the same arrangement except that the directions of the buses facing each other are different. On the other hand, the wire rod processing apparatus 131 shown in FIG. 13C and FIG. 13D is moved so as to be close to each other in the vertical direction so that the first group and the third group that are arranged to face each other overlap each other. Similarly, the second group and the fourth group that are arranged opposite to each other are arranged so as to be moved close to each other in the vertical direction so as to overlap each other. FIG. 13 (d) shows right side views of the first group and the third group, as in FIG. 13 (b), and the region X is in a wrapped state (a state having overlapping regions). However, the second group and the fourth group have the same relationship.

As described above, the wire processing apparatus 131 is disposed so that the opposed sliding contact bodies have an overlapping region at the sliding contact portion when projected from the traveling direction of the wire 103. Specifically, the first group and the third group of rotating sliding contact bodies 104G1 and 104G3 opposed to each other overlap with each other in a region X near the sliding contact surface 105 (sliding contact portion) as shown in FIG. It is arranged in a state having. Similarly, the second group and the fourth group of rotating sliding contact bodies 4G2 and 4G4 arranged to face each other are arranged in a state having an overlapping region at a sliding contact portion, although not shown. Note that the rotating sliding contact body arranged oppositely is a rotating sliding contact body that makes sliding contact with the sliding contact surface from above the wire, and a direction tapering to the rotating sliding contact body is in the opposite direction and from below the wire rod. The rotary sliding contact body that makes sliding contact with the sliding contact surface is a set.

13 (c) and 13 (d), in addition to the effects of the above-described wire rod processing apparatus 1, the wire rod processing apparatus 131 has each rotating slide in the length direction of the wire rod 103 as shown in FIG. 13 (c). The portion in contact with the contact body 104 is increased, in other words, the time for the wire 103 to contact each rotary sliding contact body 104 is increased, whereby the grinding force is improved and the machining performance is improved.

The present invention is not limited to this. For example, a rotating sliding contact group (in the above-described first group and second group) that slides from the upper side of the wire, and a rotary sliding that slides from the lower side of the wire. You may comprise so that the up-and-down drive mechanism which drives any one and both with a contact body group (above-mentioned 3rd group and 4th group) to the direction to adjoin and separate, ie, an up-down direction, may be provided. The wire rod processing apparatus having such a vertical drive mechanism can be switched between the processing by the wire rod processing device 101 described above and the processing by the wire rod processing device 131, and depending on the type (size and thickness) of the wire rod There is an effect that the degree of processing can be adjusted.

Further, the rotary sliding contact body constituting the wire

rod processing apparatuses

101, 131 and the like is not limited to the rotary sliding contact body 104 described with reference to FIGS. 7 to 13 described above. For example, FIG. The rotating sliding contact body 134 having a tapered tip shape as shown in FIG. In other words, as shown in FIG. 14A, the above-described rotating sliding contact body 104 is a simple truncated cone, and the sliding contact surface 105 is a straight line Y1 in the shape projected from the cross section and the side surface. . On the other hand, the rotating sliding contact body 134 shown in FIG. 14B has a shape in which the sliding contact surface of the truncated cone swells, and in the shape projected from the cross section or the side surface, the sliding contact surface 135 is a straight line Y1. On the other hand, the curve Y2 swells outward. A rotating sliding contact body 134 having a sliding contact surface 135 having a conical shape expanded outward is used in the above-described wire rod processing apparatus 101 and the like, and is similar to the wire rod processing apparatus 131 described in FIG. The effect of. That is, the rotary sliding contact body 134 has a region that is overlapped when projected from the traveling direction of the wire when they are mounted on the top and bottom and are arranged so as to have different tapering directions.

Therefore, the wire rod processing apparatus using the rotary sliding contact body 134 shown in FIG. 14B has the same effect as the wire rod processing apparatus 101 described above, and has been described with reference to FIG. Similarly, in the length direction of the wire 103, the portion in contact with each rotary sliding contact increases, in other words, the time for the wire 103 to contact each rotary sliding contact increases, thereby improving the grinding force, Machining performance is improved.

The wire rod processing apparatus 101 and the like shown in FIGS. 7 to 14 as described above are suitable for use in the wire rod manufacturing method according to the embodiment, that is, a wire rod manufacturing method using the wire rod processing apparatus 101 is obtained. Harmful unevenness existing on the surface of the wire can be reduced, the fatigue strength of the wire can be improved, and the life of various parts such as a coiling member using the wire can be extended. In the wire rod processing apparatus 101, the truncated cone-shaped elastic bodies are alternately arranged and rotated so that the wire travels between them and contacts the truncated cone surface. Therefore, the wire rod processing apparatus described with reference to FIGS. 1, the application to a thick wire rod in which the resistance of contact between the wire rod and the elastic body increases is facilitated.

Next, an example of a wire processing method (wire manufacturing method) using the wire processing apparatus 1 described with reference to FIGS. 1 to 6 will be described. As a target wire, a stainless steel wire having a diameter of 1.2 mm and a circular cross section was used, and silicon carbide particles of about 100 μm were used as an abrasive.

The elastic roller was clamped at a pressure of 0.2 MPa and rotated at a speed of 6 revolutions per minute. Further, the traveling speed of the wire was adjusted, and the combination of the relative speed between the elastic roller and the wire and the number of passes through which the wire passed through the wire processing apparatus 1 was implemented as a combination shown in Table 1. 15 to 18 show the surface states of the examples. FIG. 15 shows a state just drawn, and is an enlarged view of the surface state of Comparative Example 1. FIG. FIG. 16 is an enlarged view of the surface state of Comparative Example 2. FIG. 17 is an enlarged view of the surface state of Example 1. FIG. FIG. 18 is an enlarged view of the surface state of Example 2. FIG.

Further, Table 2 shows the coverage ratio (described above with reference to FIG. 9) of the continuous grooves in the longitudinal direction and the average depth μm of the grooves (and the wire diameter ratio) of each example.

As is clear from the above-mentioned comparative examples and experimental examples, the fatigue strength of the wire can be improved by providing a continuous groove in the wire. The fatigue strength increased to about 1.27 to 1.5 times.

The wire and wire manufacturing method of the present invention can improve the fatigue strength, and thus can eliminate the addition of expensive rare metals and special heat treatment steps that have been performed so far to improve the fatigue strength.

Moreover, since the groove | channel actively given is made into the uniform direction, the wire rod and the wire manufacturing method of this invention reduce (extend) surface roughness (10-point average roughness (average depth)) Rz. (After the wire was 2.39 μm, the wire after the processing was 0.83 μm). In addition, the gloss is increased, and the process of adjusting the appearance such as the subsequent surface treatment and cleaning formed into a spring or the like in the subsequent process can be eliminated, and the product value can be improved.

Moreover, the coiling member which uses the wire which concerns on embodiment mentioned above, or the wire manufactured by the wire manufacturing method which concerns on embodiment, and includes at least the part formed in the ring shape or spiral shape by winding this wire Has high fatigue strength and long life, and therefore has high product value.

Here, examples of the “coiling member including at least a portion formed in a ring shape or a spiral shape by winding the wire” include, for example, a piston ring, a spring member such as a tension spring and a compression spring, and a torsion spring And wire work springs such as torsion springs. That is, the member formed into a ring shape by winding the wire is not only one wound so that both ends of the wound wire are in contact with each other, but both ends thereof are predetermined. What was wound so that it may have a crevice (a crevice gap) and may become a ring shape shall be contained. In addition, the wire or the like according to the embodiment is suitable for use in a part that is subjected to a dynamic load and generates fatigue. The above-described coil spring such as a tension spring or a compression spring, a wire work spring such as a torsion spring or a torsion spring, a piston In addition to the ring, it can be applied to a spectacle frame.

DESCRIPTION OF SYMBOLS 1 ... Wire rod processing apparatus, 3, 4 ... Elastic roller, 101 ... Wire rod processing apparatus, 104 ... Rotary sliding contact body, 105 ... Sliding contact surface, 106, 107 ... 1st, 2nd sliding contact body drive means.

Claims

A wire rod which is pressed against an elastic body together with an abrasive and is provided with a plurality of grooves parallel to the longitudinal direction by moving at least one of the wire itself or the elastic body.
The wire according to claim 1, wherein the wire diameter is 0.6 to 2.8 mm, and the average depth of the groove is less than 1/1000 of the wire diameter and less than 10 µm.
The wire according to claim 2, wherein the mode of the diameter of the abrasive is 100 to 300 µm.
The wire according to claim 3, wherein the abrasive includes at least one of silicon carbide, alumina, garnet, and diamond.
The wire according to claim 4, wherein the wire has a hardness of 10 to 68HRc, and the abrasive has a hardness greater than that of the wire.
The wire according to claim 5, wherein the wire is made of any one of high carbon steel, stainless steel, copper alloy, titanium alloy and tungsten alloy.
The wire according to claim 6, wherein the area of the groove formed by the abrasive on the surface of the wire is 75% or more of the area of the surface of the wire.
Wire rod having a wire diameter of 0.6 to 2.8 mm, a plurality of grooves parallel to the longitudinal direction, and an average depth of the groove being less than 1/1000 of the wire diameter and less than 10 μm.
In a wire manufacturing method for manufacturing a wire with improved fatigue strength by processing the surface from a wire having scratches on the surface,
A method of manufacturing a wire material, wherein the wire material is pressed against an elastic body together with an abrasive material, and at least one of the wire material or the elastic body is moved in a longitudinal direction of the wire material, thereby providing a groove parallel to the longitudinal direction in the wire material.
The wire manufacture according to claim 9, wherein a wire diameter of the processed wire is 0.6 to 2.8 mm, and an average depth of the provided groove is less than 1/1000 of the wire diameter and less than 10 μm. Method.
The wire manufacturing method according to claim 10, wherein the mode of the diameter of the abrasive is 100 to 300 µm.
The wire manufacturing method according to claim 11, wherein the abrasive includes at least one of silicon carbide, alumina, garnet, and diamond.
The method of manufacturing a wire according to claim 12, wherein the wire has a hardness of 10 to 68 HRc, and the hardness of the abrasive is larger than the hardness of the wire.
The wire manufacturing method according to claim 13, wherein a material of the wire is any one of high carbon steel, stainless steel, copper alloy, titanium alloy and tungsten alloy.
The wire manufacturing method according to claim 14, wherein an area of a groove formed by an abrasive on the surface of the processed wire is 75% or more of an area of the surface of the wire.
16. The elastic member according to claim 9, wherein at least one pair of the elastic bodies is provided so as to sandwich the wire, and a relative speed in a longitudinal direction between the wire and the elastic body is set to 40 m / min or more. Item 2. A method for producing a wire according to item 1.
The said wire manufacturing method is a wire manufacturing method which manufactures the wire which processed the surface from the wire which has a crack on the surface, and improved fatigue strength using the wire processing device which processes the surface of the wire which is run, ,
The wire rod processing apparatus is provided with at least two pairs, and a rotating sliding contact body that sandwiches and slides the wire rod between each pair;
The wire rod manufacturing method according to any one of claims 9 to 15, further comprising a proximity separating drive unit configured to drive the pair of rotating sliding contacts in a direction to approach and separate from each other.
The said wire manufacturing method is a wire manufacturing method which manufactures the wire which processed the surface from the wire which has a crack on the surface, and improved fatigue strength using the wire processing device which processes the surface of the wire which is run, ,
The wire rod processing apparatus includes a plurality of rotating sliding contact bodies that have a conical sliding contact surface and make the sliding contact surface slide while being rotated with respect to the traveling wire.
The plurality of rotating sliding contact bodies include one or more rotating sliding contact bodies that make sliding contact with the sliding contact surface from above the wire, and one or more rotational sliding contacts that make sliding contact with the sliding contact surface from below the wire rod. The wire manufacturing method according to any one of claims 9 to 15, comprising a body.
A wire rod according to any one of claims 1 to 8, or a wire rod manufactured by the wire rod manufacturing method according to any one of claims 9 to 18, wherein the wire rod is wound. A coiling member including at least a portion formed into a ring shape or a spiral shape by being rotated.