JP3278118B2 - Manufacturing method and manufacturing apparatus for ring with irregular cross section - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is to manufacture a ring having an irregular cross-section in a plane including the central axis of the ring, that is, a ring having a different thickness in a direction parallel to the central axis of the ring. TECHNICAL FIELD The present invention relates to a method and apparatus for manufacturing a ring having an irregular cross section used for manufacturing.

[0002]

2. Description of the Related Art FIG. 9 shows an example of a conventional method for manufacturing a ring having an irregular cross-section in a plane including a central axis of the ring.

[0003] Figure 9 is a view illustrating the method for manufacturing a modified cross-section ring by rotating squeezing spinning method, and an arrow A ₁₀ direction has a larger mandrel width than the axial width of the irregular cross section ring to be manufactured Using a mandrel 71 that is forcibly driven to rotate, a ring-shaped material 72 of a ring having an irregular cross-section to be manufactured is fitted to and tightly held by the mandrel 71, and a spinning roller 74 rotatably held by a roller support 73. Ring-shaped material 7
Pressed against the second outer diameter side, the arrow C to rotate the spinning roller 74 in the arrow B ₁₀ direction by pressing a ring-shaped material 72 while rotating the ring-shaped material 72 in the arrow A ₁₀ direction by the rotation of the mandrel 71 _By moving the ring-shaped material 72 plastically on the tapered surface 74a of the spinning roller 74 by moving the ring-shaped material 72 in the direction of the ring axis in _ten directions, the thickness of the ring-shaped material 72 is reduced to t.
₁₁ was rolled to t ₁₀ from by causing the axial direction of all stretching the ring-shaped material 72 at that time (arrow D ₁₀ direction in FIG. 9), only the constant and thickness an inner diameter of the ring-shaped material 72 Shows a case where a differently shaped ring is manufactured at a predetermined position in the ring axis direction.

FIG. 10 shows another example of a conventional method of manufacturing a deformed ring, and shows a method of manufacturing a deformed ring by a ring rolling method.

[0005] In the method shown in FIG.
1a, 81b and an inner diameter side roll 81 having an outer diameter smaller than the inner diameter of the deformed section ring to be manufactured. A part of the ring-shaped material 82 is rotatably supported in a state of being in contact with the entire width in the ring axial direction, has tapered portions 83a and 83b at the center, and includes the tapered portions 83a and 83b. pressing an outer diameter side roll 83 may contact over the entire ring width direction, the ring-shaped material 8 while forcibly rotating the internal diameter side roll 81 in the arrow a ₁₁ direction
By rolling while rotating the outer diameter side roll 83 in the arrow B ₁₁ direction via the 2 shows a case that the profiled ring axial section of the ring-shaped material 82.

In the manufacturing method shown in FIG. 10, in order to reduce the stretching of the ring-shaped material 82 in the circumferential direction of the ring and to mainly stretch the ring-shaped material 82 in the axial direction of the ring, the outer-diameter-side roll 83 is reduced every time a small amount of pressure is applied. And intermediate annealing is frequently performed, for example, 3 to 10 times.
By applying each time the% reduction is performed, the shape is approximated to the final shape, thereby producing a deformed ring having a desired shape.

[0007]

However, in the above-mentioned conventional method of manufacturing a modified cross-section ring, in the former method of manufacturing a deformed cross-section ring by a spinning ironing method, the inner diameter of the modified cross-section ring to be manufactured is different for each ring. Since it is necessary to prepare the mandrel 71 having an outer diameter corresponding to each, there is a problem that a large number of mandrels 71 must be aligned.

In addition, for example, in the case of engine parts for aircraft, etc., the inner diameter of the irregularly shaped cross-section ring used for the engine parts is 200.
In many cases, the mandrel 71 is large and expensive.

[0009] Furthermore, in the spinning ironing method,
The entirety of the inner surface of the ring-shaped material 72 is a mandrel 7.
1, even when the ring-shaped material 72 is heated so that the resistance during processing becomes small, the heat is quickly released through the mandrel 71, so that hot working is performed. Cannot be performed.

For this reason, Ti-based alloys such as 6% Al-4% V-Ti alloy, which is widely used as a material for high-strength parts for aircraft, cannot be cold-worked.
There is a limitation that it is difficult to perform the processing by the spinning and spinning method using the mandrel 71.

On the other hand, in the latter method of manufacturing a ring having a deformed cross-section by the ring rolling method, a small amount of rolling is performed in order to reduce the stretching of the ring-shaped material 82 in the ring circumferential direction and to stretch the ring-shaped material 82 more in the ring axis direction. Since the shape of the outer diameter side roll 83 is sequentially changed,
There is a problem that even if only one kind of irregularly shaped cross-section ring is manufactured, it is necessary to prepare the outer diameter side roll 83 having many shapes.

That is, in this ring rolling method, the ring-shaped material 82 is essentially formed by rolling.
However, the ring-shaped material 82 is forcibly expanded and deformed in the ring axis direction by sequentially using the outer-diameter-side rolls 83 having different shapes in spite of being stretched in the ring circumferential direction. However, it is impossible to completely prevent the ring from extending in the circumferential direction.Therefore, each time a small amount of pressure is applied, the ring-shaped material is annealed to remove the processing distortion, and the roll shape is gradually changed to reduce the small amount of reduction. , It is necessary to obtain a ring shape having a finally required irregular cross section, and thus there is a problem that many outer diameter side rolls 83 and a number of heat treatments are required.

As described above, in the conventional method of manufacturing a ring having an irregular cross-section, a mandrel having an outer diameter corresponding to each inner diameter of a product ring is required, or a roll dimension must be changed every time a small amount of pressure is applied. Therefore, there is a problem that such a method by plastic working cannot be applied to small-quantity multi-product production because the tool cost becomes expensive.

That is, the main purpose of manufacturing a deformed cross-section ring by plastic working is to prevent a material yield from being significantly reduced when an expensive material of a heat-resistant superalloy ring used for an aircraft engine or the like is deformed by cutting. Is to do. However, deformed cross-section rings made of these expensive materials are mostly produced in small quantities and multi-products. For example, the production of aircraft engine parts is only several tens to several hundreds / year per item. There has been a problem that a method and an apparatus for manufacturing a ring having a deformed cross section by plastic working which can be applied to small-quantity multi-product production are desired.

[0015]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and it is possible to produce a deformed ring made of an expensive material such as a heat-resistant superalloy by plastic working. It is possible to significantly improve the material yield and dramatically improve productivity compared to the case of manufacturing by cutting, and it is necessary to frequently change the processing tool even when the dimensions and shape of the deformed ring are different It is an object of the present invention to provide a manufacturing method and a manufacturing apparatus for a deformed ring having no cross section.

[0016]

SUMMARY OF THE INVENTION A method of manufacturing a deformed ring according to the present invention includes the steps of: forming a deformed ring having a deformed cross section in a section including a central axis of the ring; The inner diameter side of the ring-shaped material is applied to the inner diameter side roll having an outer diameter smaller than the inner diameter of the ring-shaped material of the cross-sectional ring and a roll width larger than the width of the deformed cross-section ring in the ring axial direction over the entire width in the ring axis direction. At the same time, the taper portion having an inclination angle of 20 ° to 35 ° in which the outer diameter side of the ring-shaped material in which the inner diameter side is in contact with the inner diameter side roll contacts a part of the outer diameter side of the ring-shaped material. And partially pressed by an outer diameter side spinning roller having the other tapered portion formed in the direction opposite to the axial direction continuously with the one tapered portion. It is characterized in that it has a structure for shaping the modified cross ring are sequentially rolling a portion of the ring axis of the ring-shaped material by moving the grayed-like material in the axial direction relative while rotating.

Similarly, the method of manufacturing a modified cross-section ring according to the present invention is a method of manufacturing a modified cross-section ring having a cross-section in a plane including a central axis of the ring. The outer diameter side of the ring-shaped material is brought into contact with the outer diameter side roll having a roll width larger than the width of the ring axis direction over the entire width in the ring axis direction, and the outer diameter side is in contact with the outer diameter side roll. The inner diameter side of the material has an outer diameter smaller than the inner diameter of the ring-shaped material, and has one tapered portion with an inclination angle of 20 ° to 35 ° in contact with a part of the inner diameter side of the ring-shaped material. At the same time, the ring-shaped material is rotated by partially pressing with an inner diameter side spinning roller having the other tapered portion formed in the direction opposite to the axial direction continuously with the one tapered portion. It is characterized in that it has a structure for shaping the modified cross ring are sequentially rolling a portion of the ring axis of the ring-shaped material by moving axially relative while.

In the method of manufacturing a ring having a modified cross-section according to the present invention, in the embodiment, the ring-shaped material is sequentially rolled while being heated at least in a part of the circumferential direction. It is characterized in that the ring-shaped material is expanded or contracted to form a tapered or arc-shaped ring with an irregular cross section.

The apparatus for manufacturing a deformed cross-section ring according to the present invention has a roll width which is smaller than the inner diameter of the ring-shaped material of the deformed cross-section ring to be manufactured, and which is larger than the ring axial width of the deformed cross-section ring. An inner diameter side roll that has and is rotatable, and the inner diameter side is partially in contact with the outer diameter side of a ring-shaped material in which the inner diameter side abuts over the entire width in the ring axial direction and is rotatable. It has one tapered portion having an inclination angle of 20 ° to 35 ° for rolling a part of the ring-shaped material sequentially from the outer diameter side to the ring axis direction so as to be relatively movable in the ring axis direction between the inner diameter side roll and the inner diameter side roll. And an outer diameter side spinning roller having the other tapered portion formed in the direction opposite to the axial direction continuously with the one tapered portion. It is set to.

[0020] Similarly, the apparatus for manufacturing a modified cross-section ring according to the present invention comprises: an outer diameter side roll having a roll width larger than a width of the deformed cross-section ring to be manufactured in the ring axial direction; Partially contacts the inner diameter side of the ring-shaped material having an outer diameter smaller than the inner diameter of the ring-shaped material of the deformed cross-section ring and having the outer diameter side contact the outer diameter side roll over the entire width in the ring axial direction. The angle of inclination for rolling a part of the ring-shaped material sequentially from the inner diameter side to the ring axis direction so as to be rotatable and relatively movable in the ring axis direction between the outer diameter roll and the outer diameter side roll is 20 ° to 3 °.
A structure having an inner diameter side spinning roller having one tapered portion of 5 ° and having the other tapered portion formed in the opposite direction to the axial direction continuously from the one tapered portion. It is characterized by.

In the embodiment of the apparatus for manufacturing a ring having an irregular cross-section according to the present invention, in the embodiment, heating means for the ring-shaped material is provided, and the heating means is one or more of induction heating, burner heating, and electric heating. And in the same embodiment, a plurality of sets of a roll, a spinning roller, and a heating unit are provided, and in the same embodiment, at least one of the roll and the spinning roller is a driving side. The present invention is characterized in that it has a configuration and is a means for solving the above-mentioned conventional problems with the configuration of the invention relating to the above-described method and apparatus for manufacturing a modified cross-section ring.

[0022]

According to the method of manufacturing a modified cross-section ring according to the present invention, the roll width having an outer diameter smaller than the ring-shaped material of the modified cross-section ring to be manufactured and larger than the ring axial direction width of the modified cross-section ring is provided. An inner diameter side roll having
Alternatively, the inner diameter side or outer diameter side of the ring-shaped material is brought into contact with the outer diameter side roll having a roll width larger than the width of the ring of the deformed cross-section ring to be manufactured over the entire width in the ring axis direction, and the ring shape is formed. The inclination of the outer diameter side spinning roller in which the outer diameter side or the inner diameter side of the material contacts a part of the outer diameter side or the inner diameter side of the ring-shaped material or the inner diameter side spinning roller having an outer diameter smaller than the inner diameter of the ring-shaped material. A part in the ring axis direction of the ring-shaped material is sequentially rolled by being rotated while being partially pressed by one of the tapered portions having an angle of 20 ° to 35 ° and also relatively moved in the axial direction, thereby forming a deformed section. Because it is formed into a ring, and in some cases, it is heated or heated plastically while heating the ring-shaped material, it is expensive such as heat-resistant superalloy. Rings with different cross-sections made of different materials are manufactured by plastic working with a small rolling force, so there is no need to frequently change processing tools during plastic working, and the material is lower than when manufacturing by cutting. The yield is remarkably improved.

[0023]

1 and 2 show one embodiment of the present invention, and FIG. 1 shows a ring of a modified cross section manufactured in this embodiment.

The irregular cross section ring 1 shown in Figure 1, it becomes left a thick portion 1b of the wall thickness t ₂ with the right side of the ring axial direction is in the thin portion 1a of thickness t _1, t ₁ <
It has become a relation of t _2, which is assumed during which forms the shape of the modified cross-section formed in the tapered portion 1c.

The ring 1 having such a modified cross section is manufactured by an apparatus having the basic structure shown in FIG.

An apparatus 2 for manufacturing a ring having an irregular cross section shown in FIG.
Is an inner diameter side roll 4 having an outer diameter smaller than the inner diameter of the ring-shaped material 3 of the modified cross-section ring 1 to be manufactured and having a roll width larger than the ring axial width of the modified cross-section ring 1. The inner diameter side roll 4 includes a roll body (body) 4a and a flange 4
b and small-diameter journal portions 4c and 4d. The journal portions 4c and 4d are supported by a housing (not shown) by bearings 5a and 5b, and are forcibly rotated by being connected to a rotation drive source (not shown). ing.

Further, the inner diameter side of the ring-shaped material 3 is brought into contact with the inner diameter side roll 4 over the entire width in the ring axis direction, and partially contacts the outer diameter side of the ring-shaped material 3. direction and provided with a radially outer spinning roller 6 sequentially rolling on the pressed and ring axial direction a portion of the ring-shaped material 3 from the outer diameter side relative movable (arrow C ₂ direction in FIG. 2), the The outer diameter side spinning roller 6 has one tapered portion 6a on the left side, the other tapered portion 6b on the right side having a different taper angle from the left side, and small diameter journal portions 6c and 6d.
The rollers c and 6d are supported by roller boxes (not shown) via bearings 7a and 7b, and rotate freely.

Further, a high-frequency induction heating coil 8 is provided as a heating means, and a shield plate 9 is provided so that the influence of induction heating does not affect other parts.

In manufacturing the modified cross-sectional ring 1 shown in FIG. 1 by such a modified cross-sectional ring manufacturing apparatus 2, in this embodiment, as the ring-shaped material 3, a superalloy waspaloy (0.07% C- 0.75% Mn-0.75
% Si-19.5% Cr-13.5% Co-4.3% M
o-3% Ti-1.4% Al-0.006% B-0.0
7% Zn-2% Fe-balance Ni) and an inner diameter of 40
The thickness was 0 mm, the width in the ring axis direction was 50 mm, and the thickness was 15 mm.

As the inner diameter side roll 4, a roll whose main body (body) 4a has an outer diameter of 200 mm was used.

Further, as the outer diameter side spinning roller 6, a roller having a maximum outer diameter of 170 mm and an inclination angle of one tapered portion (processed portion) 6a on the left side of 30 ° was used.

[0032] Therefore, after setting the ring-shaped elements 3 on the inner diameter side roll 4 was rotated in the arrow A ₂ direction inner diameter side roll 4 at 600rpm rate of by actuating the rotary drive source (not shown).

[0033] Next, given the feed by the hydraulic force radially outer spinning roller 6 at a speed of 60 mm / min to the ring axis (arrow _{C 2} direction) while rolling a ring radially (arrow _{d 2} direction), the ring-shaped By feeding the raw material 3 at a rate of 0.2 mm / rev for each rotation, the thickness (t ₁ ) of the thin portion 1a on the right side in the drawing was rolled to 10.5 mm and formed into a ring 1 with an irregular cross section.

From various results, it is desirable that the inclination angle of the one tapered portion (working portion) 6a of the outer diameter side spinning roller 6 be in the range of 20 ° to 35 °. The softer the better, the smaller it was.

As for the feed, 0.15 to 0.5
It is preferable to set it to 0 mm / rev, and it is recognized that as the value is increased, the processing efficiency is improved, but on the other hand, the processing force is increased and the processed surface tends to be inferior.

In the production of the ring 1 having the irregular cross section, the relationship between the amount of reduction of the outer diameter side spinning roller 6 and the feed distance is controlled by a conventional copying apparatus or NC apparatus so that the thickness of the processed portion is reduced. the thickness t ₁ can be processed into arbitrarily controlled to the irregular cross section ring, but was carried out using the template as a copying method in this embodiment. The waspaloy, which is the ring-shaped material 3, can be processed at room temperature, but has a tensile strength of 130 kgf / mm ² at room temperature.
In this embodiment, the load on the inner diameter side roll 4 becomes large, and the apparatus becomes large. Therefore, in this embodiment, the induction heating coil 8 serving as heating means is used.
Ring-shaped material 3 by induction heating
Rolling was performed while heating to about 100 ° C. However,
The actual processing temperature is about 850 ° C. (the tensile strength at this temperature is about 57 ° C.) for heat transfer cooling to the inner diameter side roll 4 and the like.
kgf / mm ² ).

FIG. 3 shows another embodiment of the heating means. When only the induction heating coil 8 shown in FIG. 2 is used, the uniform temperature increases as the degree of deformation of the ring-shaped material 3 increases. In the embodiment shown in FIG. 3, the induction heating coil 8 is used.
In addition to the above, a rapid heating burner 11 made of oxygen-acetylene gas or the like is used as another heating means, and a low-temperature portion is locally and rapidly heated so that a uniform temperature distribution can be achieved. It shows the case where it is done.

FIG. 4 shows still another embodiment of the heating means. The inner diameter side roll 4 and the outer diameter side spinning roller 6 are electrically insulated from each other, and journal portions 4d, 6d are respectively provided. In this case, a heating power source 14 of AC or DC is connected through lead wires 12 and 13 to generate heat by resistance and heat directly.

[0039] Further, as additional processing, as shown in FIG. 5, the once molded with irregular cross section ring 1 is set to a conventional pipe expanding device to expand the segments 15 of the tube expansion machine arrow A ₆ direction tapered Shows a case where the ring 1 is formed into a tapered irregular cross section. In addition, it is possible to mold not only into a taper shape but also into an arc shape or the like.
Furthermore, such a tapered shaped ring 1 is
It is also possible to form by reducing the outer diameter in a tapered shape using a conventional contracting machine, and it is possible to form not only a tapered shape but also an arc shape.

FIG. 6 shows still another embodiment of the present invention, in which two sets (or more) of an inner diameter side roll 4, an outer diameter side spinning roller 6, and an induction heating coil 8 as heating means are provided. It is also possible to provide one.

FIGS. 7 and 8 show still another embodiment of the present invention, and FIG. 7 shows a modified cross-section ring manufactured in this embodiment.

The irregular cross section ring 21 shown in FIG. 7, they become left a thick portion 21b of the wall thickness t ₉ with the right side of the ring axial direction is in the thin portion 21a of the wall thickness t _8,
t ₈ <t ₉ , and the interval between them is the tapered portion 2
1c has the shape of the irregular cross section.

Such a modified cross-section ring 21 is manufactured by an apparatus whose basic configuration is shown in FIG.

An apparatus 22 for manufacturing a ring having an irregular cross section shown in FIG.
Has an outer-diameter-side roll 24 having a roll width larger than the width of the ring 21 in the ring axis direction of the odd-shaped cross-section ring 21 and the ring-shaped material 23 to be manufactured. ) 24a and flange 24
b and small-diameter journal portions 24c and 24d. The journal portions 24c and 24d are supported by a housing (not shown) by bearings 25a and 25b and are free to rotate.

Also, the ring 2 of irregular shape to be manufactured
Partial contact with the inner diameter side of the ring-shaped material 23 having an outer diameter smaller than the inner diameter of the ring-shaped material 23 and having the outer diameter side contact the outer diameter side roll 24 over the entire width in the ring axial direction. sequentially rolling and and the ring axial direction to press the portion of the ring-shaped blank 23 from the inner diameter side relative movable ring axis (arrow C ₉ direction in FIG. 9) between the outer diameter side roll 24 Inner diameter spinning roller 2
6 and the inner-side spinning roller 26
Has one tapered portion 26a on the left side, the other tapered portion 26b on the right side having a different inclination angle from the left side, and small diameter journal portions 26c and 26d.
c and 26d are supported by a roller box (not shown) via bearings 27a and 27b, and are forcibly rotated by being connected to a rotation drive source (not shown).

Further, a high-frequency induction heating coil 28 is provided as a heating means, and a shield plate 29 is provided so that the influence of induction heating does not affect other parts.

An apparatus 22 for producing such a ring of irregular cross section
Also, it was possible to manufacture the modified cross-sectional ring 21 having the tapered portion 21c on the inner diameter side as shown in FIG.

In each of the above embodiments, the case where the ring axis direction of the ring-shaped materials 3 and 23 is the left-right direction, but the case where the ring axis direction of each ring-shaped material 3 and 23 is the up-down direction. This is naturally included as an embodiment of the present invention. In such a case, the flanges 4b and 24b of the rolls 4 and 24 may receive a part of the load of the ring-shaped materials 3 and 23. It is possible.

[0049]

According to the method and the apparatus for manufacturing a deformed cross-section ring according to the present invention, it is possible to manufacture a deformed cross-section ring made of an expensive material such as a heat-resistant alloy by plastic working with a small rolling force. It is suitable for small-quantity multi-product production because there is no need to prepare a large number of inner or outer diameter rolls and outer or inner diameter spinning rollers even when the size and shape of the deformed section ring to be manufactured are different. This has a remarkable effect that the productivity of the deformed ring is greatly improved, in combination with the remarkable improvement in the material yield as compared with the case of manufacturing by cutting.

[Brief description of the drawings]

FIG. 1 is an explanatory longitudinal sectional view of a modified sectional ring manufactured according to an embodiment of the present invention.

FIG. 2 is an explanatory longitudinal sectional view in the ring axis direction showing a basic configuration of a device for manufacturing a ring having a modified cross-section showing one embodiment of the present invention.

FIG. 3 is a schematic explanatory view in a direction orthogonal to a ring axis showing another embodiment of the present invention.

FIG. 4 is a longitudinal sectional view in a direction orthogonal to a ring axis, showing still another embodiment of the present invention.

FIG. 5 is a schematic explanatory view in the ring axis direction showing still another embodiment of the present invention.

FIG. 6 is a schematic explanatory view in a direction orthogonal to a ring axis, showing still another embodiment of the present invention.

FIG. 7 is an explanatory longitudinal sectional view of a modified sectional ring manufactured according to still another embodiment of the present invention.

FIG. 8 is an explanatory longitudinal sectional view in a ring axis direction showing a basic configuration of a device for producing a modified cross-section ring shown in FIG. 7 in still another embodiment of the present invention.

FIG. 9 is an explanatory longitudinal sectional view in the ring axis direction showing an example of a conventional device for manufacturing a modified cross-section ring.

FIG. 10 is an explanatory longitudinal sectional view in the ring axis direction showing another example of a conventional device for manufacturing a ring having a modified cross section.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 irregular shaped ring 2 irregular shaped ring manufacturing apparatus 3 ring-shaped material 4 inner diameter side roll 6 outer diameter side spinning roller 6a one tapered portion 6b the other tapered portion 8 induction heating coil (heating means) 11 heating burner (heating) Means 14 Power supply for heating (heating means) 21 Ring with irregular cross-section 22 Manufacturing device for ring with irregular cross-section 23 Ring-shaped material 24 Outer diameter side roll 26 Inner diameter side spinning roller 26a One tapered portion 26b The other tapered portion 28 Induction Heating coil (heating means)

Continuation of the front page (72) Inventor Teruo Watanabe 272 Hirai, Fudo, Mihama-cho, Chita-gun, Aichi Prefecture (56) References JP-A-1-181937 (JP, A) JP-A-59-4931 (JP, A ) Japanese Patent Publication No. 4-62817 (JP, B2) (58) Field surveyed (Int. Cl. ⁷ , DB name) B21H 1/06

Claims (9)

(57) [Claims] When manufacturing a deformed cross-section ring whose cross-section in a plane including the center axis of the ring is a deformed cross-section, the ring has an outer diameter smaller than the inner diameter of the ring-shaped material of the deformed cross-section ring to be manufactured. In addition, the inner diameter side of the ring-shaped material is brought into contact with the inner diameter side roll having a roll width larger than the ring axial direction width of the modified cross-section ring over the entire width in the ring axis direction, and the inner diameter side is in contact with the inner diameter side roll. The taper has one tapered portion having an inclination angle of 20 ° to 35 ° at which the outer diameter side of the material comes into contact with a part of the outer diameter side of the ring-shaped material, and the shaft is connected to the one tapered portion. By partially pressing with the outer diameter side spinning roller having the other tapered portion formed in the opposite direction and rotating the ring-shaped material relatively in the axial direction. A method for manufacturing a deformed cross-section ring, comprising rolling a part of a ring-shaped material in a ring axial direction to form a deformed cross-section ring. 2. An outer diameter having a roll width larger than a width in a ring axial direction of a ring having a deformed cross section to be manufactured when the deformed cross section ring has a deformed cross section in a plane including a central axis of the ring. The outer diameter side of the ring-shaped material is brought into contact with the side roll over the entire width in the ring axial direction, and the inner diameter side of the ring-shaped material whose outer diameter is in contact with the outer diameter roll is smaller than the inner diameter of the ring-shaped material. It has one tapered portion having a diameter and having an inclination angle of 20 ° to 35 ° in contact with a part on the inner diameter side of the ring-shaped material, and is axially opposite to the one tapered portion continuously. By partially pressing with the inner diameter side spinning roller having the other tapered portion formed in the direction and rotating the ring-shaped material and relatively moving it in the axial direction, A method for manufacturing a deformed cross-section ring, wherein a part in the ring axial direction is sequentially rolled and formed into a deformed cross-section ring. 3. The method of manufacturing a ring with a modified cross-section according to claim 1, wherein the ring-shaped material is sequentially rolled while being heated at least in a part of its circumferential direction. 4. The method according to claim 1, wherein the ring-shaped material after the rolling process is expanded or contracted to form a tapered or arcuate shaped cross-section ring. 5. An inner diameter side roll having an outer diameter smaller than the inner diameter of the ring-shaped material of the modified cross-section ring to be manufactured and having a roll width larger than the ring axial direction width of the modified cross-section ring and being rotatable. The inner diameter of the ring-shaped material, the inner diameter of which is in contact with the inner diameter side roll over the entire width in the ring axis direction, and is partially rotatable and rotatable. A part of the ring-shaped material is rolled sequentially from the outer diameter side in the axial direction of the ring so as to be relatively movable at an inclination angle of 20 ° to 3 °.
It has an outer diameter side spinning roller having one tapered portion of 5 mm and having the other tapered portion formed in the axial direction opposite to the one tapered portion. Equipment for manufacturing rings with irregular cross sections. 6. An outer diameter side roll having a roll width larger than a ring axial direction width of a deformed section ring to be manufactured, and an outer diameter smaller than an inner diameter of a ring-shaped material of the deformed section ring. Between the outer-diameter-side roll and the outer-diameter-side roll. And a part of the ring-shaped material is rolled sequentially from the inner diameter side to the ring-axis direction so as to be relatively movable in the ring axis direction. An apparatus for manufacturing a ring having an irregular cross-section, comprising: an inner diameter side spinning roller having the other tapered portion formed in the axially opposite direction to be continuous with the tapered portion. 7. The modified cross-section ring according to claim 5, further comprising heating means for the ring-shaped material, wherein the heating means comprises one or a combination of induction heating, burner heating, and electric heating. Manufacturing equipment. 8. The apparatus according to claim 5, comprising a plurality of sets of rolls, spinning rollers, and heating means. 9. The apparatus according to claim 5, wherein at least one of the roll and the spinning roller is on the drive side.