JP2020165492A - Coupling structure, and manufacturing method of coupling structure - Google Patents

Abstract

To provide a coupling structure having an excellent coupling force with respect to a stress in a rotation direction in the coupling structure of two members using spinning.SOLUTION: The present invention relates to a coupling structure of a first member and a cylindrical second member which is coupled in a state where the first member is disposed inside. In the coupling structure, a groove or a projection which is intermittent or continuous in an axial direction is formed outside of the first member. Spinning is applied to the second member in a state where the second member covers the groove or the projection of the first member, such that the first member and the second member are coupled so as not to be rotated relatively in a circumferential direction. Thus, in the coupling structure of two members using the spinning, a coupling structure having an excellent coupling force with respect to a stress in a rotation direction is provided.SELECTED DRAWING: Figure 3

Description

The present invention relates to a coupled structure composed of a first member and a second member, and a method for manufacturing the same. More specifically, the present invention relates to a bonded structure in which a first member and a second member arranged inside the first member are joined by spinning processing, and a method for manufacturing the same.

As a method of connecting the two members, a method using a spinning processing device is known. For example, in Patent Document 1, in a method for manufacturing a belt-type continuously variable transmission in which the pulley width is variably controlled, a spinning process is performed to connect a movable sheave for variably controlling the pulley width and a cylinder member on the hydraulic cylinder side. I am using the device. In this method of connecting the movable sheave and the cylinder member, an annular groove and a detent hole are formed in the circumferential direction of the rotation axis on the joint surface (back surface) of the movable sheave with the cylinder member, and the cylinder member is plasticized by spinning. It is a method of deforming and engaging with the annular groove and the detent hole.

Japanese Unexamined Patent Publication No. 2003-205342

In the method of joining two members by plastically deforming the members using spinning processing, one member is processed to form a groove, and the other member has a structure for engaging with the groove. Since it is not necessary to pre-form the two members, the two members can be joined by a simple process. However, in the bonding method described in Patent Document 1, there is a problem that a sufficient bonding force cannot be obtained in the rotational direction because the bonding portion between the movable sheave and the cylinder member is bonded to the surface. is there.

An object of the present invention is to provide a bonded structure having an excellent bonding force against stress in the rotational direction in a bonded structure of two members using spinning processing.

As a result of diligent studies on the above problems, the present inventor is intermittent or continuous in the axial direction on either the inner peripheral surface of the tubular second member or the outer peripheral surface of the first member arranged inside the tubular second member. By forming the formed groove or convex portion and plastically deforming and engaging the other member that does not form the groove or convex portion with the groove or convex portion, an excellent coupling with respect to stress in the rotational direction is achieved. The present invention has been completed by finding that a binding structure having a force can be obtained.
That is, the present invention is the following bonded structure or a method for producing the same.

The coupling structure of the present invention for solving the above problems is a coupling structure of a first member and a tubular second member that is coupled with the first member arranged inside. An axially intermittent or continuous groove or convex portion is formed on the outside of the first member, and the second member is subjected to spinning processing in a state where the second member covers the groove or convex portion of the first member. It is characterized in that the first member and the second member are connected so as not to rotate relatively in the circumferential direction.
According to this coupling structure, the second member engages with the axial groove or convex portion formed on the outside of the first member by plastic deformation, so that the second member engages with the stress in the rotational direction. It is possible to provide a coupling structure having an excellent coupling force (a force for preventing the relative rotation of the first member and the second member in the circumferential direction).
Further, in the spinning process, the amount of the second member flowing into the groove portion of the first member (filling amount) is higher than that in the press process or the like, so that there is an effect that the bonding force is excellent.
Further, since this structure is plastically deformed by being pressed from the outside of the second member, the shape and size of the first member are not limited, and even if it has a tubular shape or a rod shape, it is a thin member. It also has the advantage of being good.

Further, one embodiment of the bonded structure of the present invention is characterized in that the end portion of the first member or the convex portion is covered with the second member by performing a spinning process.
By flowing the second member to the end of the first member or the convex portion by spinning processing, it is possible to cover the end of the first member or the convex portion with the second member, thereby not only in the direction of rotation but also in the direction of rotation. , It is possible to provide a bonded structure having an excellent bonding force even with respect to stress in the axial direction.

The coupling structure of the present invention for solving the above problems is a coupling structure of a tubular first member and a tubular second member that is coupled with the first member arranged inside. The first member has an axially intermittent or continuous groove or convex portion formed inside the second member, and the first member covers the groove or convex portion of the second member. It is characterized in that the first member and the second member are connected so as not to rotate relatively in the circumferential direction by performing the spinning process.
According to this coupling structure, the first member engages with the axial groove or convex portion formed inside the second member by plastic deformation, so that the first member engages with the stress in the rotational direction. It is possible to provide a bonding structure having an excellent bonding force.
Further, in the spinning process, the amount of the first member flowing into the groove of the second member (filling amount) is higher than that in the press process or the like, so that there is an effect that the bonding force is excellent.

Further, one embodiment of the bonded structure of the present invention is characterized in that the end portion of the second member or the convex portion is covered with the first member by performing a spinning process.
By flowing the first member to the end of the second member by spinning, the first member can cover the end of the second member or the convex portion, whereby not only the rotation direction but also the axial direction. It is possible to provide a bonded structure having an excellent bonding force against stress on the surface.

The method for manufacturing a bonded structure of the present invention for solving the above problems is a method for manufacturing a bonded structure composed of a first member and a second member, wherein an axially intermittent or continuous groove portion is provided on the outside of the first member. Alternatively, it is characterized by including a step of forming a convex portion and a step of performing a spinning process on the second member while the second member covers the groove or convex portion of the first member.
According to the method for manufacturing this coupled structure, the second member engages with the axial groove or convex portion formed on the outside of the first member by plastic deformation, so that the stress in the rotational direction is stressed. There is an effect that a bonded structure having an excellent binding force can be obtained.
Further, according to the method for manufacturing the bonded structure, by applying the spinning process to the second member, an engaging portion for engaging with the groove portion or the convex portion formed on the outside of the first member is formed. Therefore, there is an advantage that it is not necessary to form an engaging portion with the second member in advance.
Furthermore, since this structure is plastically deformed by being pressed from the outside of the second member, the shape and size of the first member are not limited, and even if it has a tubular or rod shape, it is a thin member. There is also the advantage that it may be used. Further, since the pressing is performed from the outside of the second member, the processing state can be visually observed, which has the effect of being easy to process.

The method for manufacturing a bonded structure of the present invention for solving the above problems is a method for manufacturing a bonded structure composed of a first member and a second member, wherein an axially intermittent or continuous groove portion is formed inside the second member. Alternatively, it is characterized by including a step of forming a convex portion and a step of subjecting the first member to a spinning process while the first member covers the groove or convex portion of the second member.
According to the method for manufacturing this coupled structure, the first member engages with the axial groove or convex portion formed inside the second member by plastic deformation, so that the stress in the rotational direction is stressed. There is an effect that a bonded structure having an excellent binding force can be obtained.
Further, according to the method for manufacturing the bonded structure, by applying the spinning process to the first member, an engaging portion for engaging with the groove portion or the convex portion formed on the outside of the second member is formed. Therefore, there is an advantage that it is not necessary to form an engaging portion with the first member in advance.

According to the present invention, it is possible to provide a bonded structure having an excellent bonding force against stress in the rotational direction in a bonded structure of two members using spinning processing.

It is a schematic explanatory drawing which shows the structure of the spinning processing apparatus for manufacturing the coupling structure of 1st Embodiment of this invention. It is a schematic explanatory drawing which shows the structure of the 1st member which comprises the coupling structure of 1st Embodiment of this invention. (A) It is a side view of the 1st member. (B) is a front view of the first member seen from the direction of the arrow in FIG. 2 (A). (C) is an enlarged view of a portion surrounded by a broken line in FIG. 2 (A). (D) is an enlarged view of a portion surrounded by a broken line in FIG. 2 (B). It is schematic explanatory drawing which shows the manufacturing process by the spinning processing apparatus of the coupling structure of 1st Embodiment of this invention. It is a schematic explanatory drawing which shows the other aspect of the 1st member which comprises the coupling structure of this invention. (A) It is a side view of the 1st member. (B) is an xx cross-sectional view of the first member seen from the direction of the arrow in FIG. 4 (A). (C) It is an enlarged view of the part surrounded by the broken line of FIG. 4 (B). It is a schematic explanatory drawing which shows the other aspect of the convex part and the groove part formed in the 1st member or the 2nd member which comprises the coupling structure of this invention. The left view in FIGS. 5 (A) to 5 (D) is a schematic explanatory view of a convex portion and a groove portion viewed from the side with respect to the rotating rotation shaft R1 of the first member or the second member. The right figure in FIGS. 5 (A) to 5 (D) is an xx cross-sectional view of the left figure. It is schematic explanatory drawing which shows the manufacturing process by the spinning processing apparatus of the coupling structure of 2nd Embodiment of this invention. (A) It is a schematic explanatory drawing which shows the process of connecting the outer peripheral surface of the 1st member with the inner peripheral surface of the 2nd member by performing the spinning process from the inside of the 1st member. (B) It is a schematic explanatory drawing which shows the coupling structure of the 2nd Embodiment at the end of a spinning process. (C) is a view seen from the direction of the X1 arrow in FIG. 6 (B). (D) is a view seen from the direction of the X2 arrow in FIG. 6 (B).

Hereinafter, a method for manufacturing a bonded structure and a bonded structure using a spinning processing apparatus according to the present invention will be described in detail with reference to the drawings.
In addition, the bonded structure and the method for producing the same described in the embodiment are merely exemplified for explaining the bonded structure and the method for producing the bonded structure according to the present invention, and the present invention is limited thereto. It's not something. Further, the method for manufacturing the bonded structure is also referred to as a method for connecting the first member and the second member.

The bonded structure of the present invention is obtained by using a spinning processing apparatus, and the first member and the tubular second member are bonded in a state where the first member is arranged inside the second member. Is. Further, on the connecting surface of one of the first member and the second member, a groove or a convex portion is formed intermittently or continuously in the rotation axis direction of the first member and the second member, and the other member is By spinning, the groove or convex portion is molded so as to cover the material. As a result, in the bonded structure of the present invention, the groove or convex portion of one member and the material of the other member are locked, so that the first member and the second member do not rotate relatively in the circumferential direction. Can be combined as follows.

Spinning processing is a method of plastic working in which rotating plate-shaped or tubular members are pressed with a roller or spatula to form, for example, brake parts, engine parts, tire wheels, household containers, decorative crafts. It is used in the manufacture of parts and products such as goods, lighting equipment, communication equipment, boilers, tanks, and nozzles.

The materials of the first member and the second member are not particularly limited, but the member to be spinning may be any material suitable for spinning. As a material suitable for spinning, a material whose shape is easily deformed is preferable, and examples thereof include a steel material. The member on which the groove or the convex portion is formed may be made of any material, but is preferably harder than the material of the member to be spinning so that the groove or the convex portion is not crushed during the spinning process.

The shape of the first member may be any shape that can be arranged inside the tubular second member, and examples thereof include a columnar shape, an elliptical columnar shape, a polygonal columnar shape, a cylindrical shape, an elliptical cylinder shape, and a polygonal cylinder shape. From the viewpoint of the optimum shape for spinning, a cylindrical or cylindrical shape is preferable.

Since the first member is arranged inside, the shape of the second member may be a cylinder having a space inside, and examples thereof include a cylindrical shape, an elliptical cylinder shape, and a polygonal cylinder shape. From the viewpoint of the optimum shape for spinning, a cylindrical shape is preferable.
The tubular member may have a bottom. Further, it may be a tubular member having a part missing in the circumferential direction of the tubular shape, such as a semi-cylindrical shape.
Further, the shape of the second member may be a tubular shape in which the first member can be arranged as the final state of the bonded structure. For example, as the second member, a plate-shaped member such as a disk may be used, and the first member may be connected to the first member while being processed into a tubular shape that covers the periphery of the first member by spinning.

[First Embodiment]
FIG. 1 is a schematic explanatory view showing the structure of a spinning processing apparatus 10 for manufacturing a bonded structure according to the first embodiment of the present invention. As shown in FIG. 1, the spinning processing apparatus 10 rotates the first member 1A and the second member 2A about the rotation axis R1 and spins the second member 2A by the processing roller 7.

The spinning processing device 10 has a rotating mechanism (not shown) that rotates around a rotating shaft R1, a rotating table 3 connected to the rotating mechanism, and a first member 1A and a second member 1A and a second member at the tip of the rotating table 3. A fixing portion 4 for sandwiching and fixing the member 2A is provided. Further, the tip of the turntable 3 is provided with an insertion portion 6 projecting along the rotation shaft R1, and the fixing portion 4 is formed with an insertion hole 5 for inserting the insertion portion 6. A through hole 13A (see FIG. 2) and 13B are formed in the center of the first member 1A and the second member 2A, respectively, and when the first member 1A and the second member 2A are fixed, the insertion portion is formed. 6 penetrates the through holes 13A and 13B of the first member 1A and the second member 2A, and inserts the tip thereof into the insertion portion 6 of the fixing portion 4. As a result, the centers of the first member 1A and the second member 2A can be fixed so as not to be displaced by an external force acting in a direction perpendicular to the rotation shaft R1.

The spinning processing device 10 includes a processing roller 7 for spinning the second member 2A. As shown in FIG. 1, the processing roller 7 rotates about the rotation axis R2. The rotation shaft R2 is installed in parallel with the rotation shaft R1 of the first member 1A and the second member 2A, and can move along the rotation shaft R1.

FIG. 2 is a schematic explanatory view showing the structure of the first member 1A constituting the coupling structure according to the first embodiment of the present invention. 2 (A) is a side view of the first member 1A, FIG. 2 (B) is a front view of the first member 1A seen from the direction of the arrow in FIG. 2 (A), and FIG. 2 (C). ) Is an enlarged view of the portion surrounded by the broken line in FIG. 2 (A), and FIG. 2 (D) is an enlarged view of the portion surrounded by the broken line in FIG. 2 (B).

The first member 1A is an article in which a cylindrical main body 11 having a through hole 13A in the center and a convex portion 12A formed on the outside of the main body 11 along the axial direction of the cylindrical main body 11. A plurality of convex portions 12 are formed on the outer side of the main body 11 in the circumferential direction. The convex portion 12A has an inclined portion 13 that is inclined so that the height of the convex portion 12A gradually increases in the direction in which the processing roller 7 moves when machining with the spinning processing device 10.

The second member 2A uses a disk-shaped plate member having a through hole in the center, and is plastically deformed by a processing roller 7 so as to cover the first member 1A, as shown in the upper half of FIG. The deformed second member 2A has a cylindrical shape, and the first member 1A is arranged inside the second member 2A.

Next, the spinning process of the second member 2A will be described with reference to FIG. As shown in the upper part of FIG. 3, the processing roller 7 moves along the axial direction of the rotation shaft R1 and plastically deforms by pressing the second member 2A in which the first member 1A is arranged from the outside. .. As a result, the outer peripheral surface of the first member 1A and the inner peripheral surface of the second member 2A are joined from the front side in the moving direction of the processing roller 7, and the material constituting the second member 2A is the first member 1A. It flows along the outer peripheral surface. More specifically, the thickness of the disk-shaped second member 2A is t1, the distance between the processing roller 7 and the first member 1A is t2, and the material for t1-t2 flows in the traveling direction of the processing roller 7. ..

As the processing roller 7 is further moved, the material of the second member 2A flows above the convex portion 12A of the first member 1A and engages with the convex portion 12A, as shown in the lower figure of FIG. It is molded. That is, due to this plastic deformation, the second member 2A is formed with a concave structure 22 that engages with the shape of the convex portion 12A. In other words, the material of the second member flows into the concave portion formed between the convex portions 12A of the first member 1A, so that the convex portion is formed in the second member 2A and the convex portion 12A of the first member is formed. It becomes a structure that meshes with.

Finally, the material of the second member 2A forms the locking portion 21 that covers the end of the convex portion 12A of the first member 1A. The locking portion 21 does not have to be formed, and the presence or absence of the locking portion 21 is determined by adjusting the amount of the material of the second member 2A.

According to this coupling structure, the concave structure 22 of the second member 2A and the convex portion 12A of the first member 1A are engaged with each other, so that the second member 2A and the first member 1A are strongly coupled. Further, since the convex portion 12A is formed continuously in the axial direction of the rotation shaft R1, the first member 1A and the second member 2A can be connected so as not to rotate relatively in the circumferential direction.
Further, according to this coupling structure, the end portion of the convex portion 12A of the first member 1A can be locked with the material of the second member 2A, so that the first member 1A and the second member 2A have a rotating shaft. It is strongly coupled to the stress in the R1 direction and can prevent the first member 1A from coming out of the second member 2A.

(About other aspects of the first member)
As another aspect of the coupling structure of the present invention, a groove portion continuous in the axial direction of the rotation shaft R1 may be formed in place of or in parallel with the convex portion 12A of the first member 1A. For example, FIG. 4 illustrates another aspect of the first member constituting the bonded structure of the present invention. 4 (A) is a side view of the first member 1B, and FIG. 4 (B) is an xx cross-sectional view of the first member 1B as seen from the direction of the arrow in FIG. 4 (A). 4 (C) is an enlarged view of a portion surrounded by a broken line in FIG. 4 (B).

As shown in FIG. 4, the first member 1B has a plurality of groove portions 14A formed on the outer surface of the main body 11. The connection between the first member 1B and the second member 2A can be performed in the same manner as the first member 1A having the convex portion 12A. That is, with the first member 1B arranged inside the second member 2A, the processing roller 7 is moved along the axial direction of the rotation shaft R1 and the second member 2A is pressed from the outside to undergo plastic deformation. As a result, the outer peripheral surface of the first member 1B and the inner peripheral surface of the second member 2A are joined from the front side in the moving direction of the processing roller 7, and the material constituting the second member 2A is the first member 1B. It flows along the outer peripheral surface. Then, when the processing roller 7 is further moved, the material of the second member 2A flows through the upper portion of the groove portion 14A of the first member 1B, the material of the second member 2A flows into the groove portion 14A, and the groove portion is formed into the second member 2A. A convex structure that engages with the shape of 14A is formed.

When the groove portion is formed on the first member, there is an advantage that the processing of the first member is easier than when the convex portion is formed. On the other hand, in the case of the groove portion, when the material constituting the second member flows into the groove portion, a gap is likely to be generated inside the groove portion. Therefore, when the convex portion is formed on the first member, there is an advantage that the connecting surfaces are firmly bonded as compared with the case where the groove portion is formed.

The height of the convex portion formed on the first member is smaller than the thickness of the second member. For example, it is about 0.1 to 5 mm. On the other hand, the thickness of the second member is not particularly limited, but is preferably 20 mm or less, more preferably 10 mm or less, from the viewpoint of performing spinning processing. Further, from the viewpoint of ensuring the strength of each of the convex portion and the concave structure formed on the second member, the thickness of the second member is about 1.5 to 10 times the height of the convex portion.
The width of the convex portion is not particularly limited, but is, for example, 0.5 mm or more. By setting the thickness to 0.5 mm or more, the strength of the structure of the convex portion can be ensured.

The depth of the groove portion is not particularly limited, but is preferably 0.1 mm or more from the viewpoint of ensuring the strength of the convex structure formed by the second member flowing into the groove portion. Further, from the viewpoint of preventing the formation of voids inside the groove, the depth of the groove is preferably 10 mm or less.
The width of the groove is preferably 0.5 mm or more from the viewpoint that the material of the second member can easily flow into the groove. Further, from the viewpoint of reducing the influence on the spinning process of the second member, the width of the groove is preferably 10 mm or less.

The number of convex portions and / or groove portions formed in the circumferential direction of the first member is not particularly limited and may be one. By forming two or more convex portions and / or groove portions in the circumferential direction of the first member, the first member and the second member can be strongly connected.

The convex portion and the groove portion may be formed intermittently in the axial direction of the rotation shaft R1. For example, FIGS. 5 (A) and 5 (B) show the convex portions 12B and the convex portions 12C that are formed intermittently in the axial direction of the rotation axis R1.
When the convex portion and the groove portion are continuously formed in the axial direction of the rotation shaft R1, there is an effect that the convex portion and the groove portion can be easily processed. Further, when the convex portion and the groove portion are formed intermittently in the axial direction of the rotation shaft R1, many portions that engage with the second member are formed, so that the first member and the second member are strongly connected. be able to.

The shapes of the convex portion and the groove portion are not particularly limited, and examples thereof include an arc-shaped, arc-shaped, and polygonal cross-sectional shapes. As specific examples of the convex portion and the groove portion, FIG. 5 (A) shows a convex portion 12B having an arc-shaped cross section, FIG. 5 (B) shows a convex portion 12C having a rectangular cross section, and FIG. 5 (C) shows a circular cross section. The arc-shaped convex portion 12D and FIG. 5D show a groove portion 14B having an arc-shaped cross section. When the cross-sectional shape is arc-shaped or arc-shaped, since there are no corners, a gap is unlikely to occur between the first member and the second member, so that the first member and the second member can be strongly bonded. Further, when the cross-sectional shape is a polygonal shape, since it is strongly engaged at the corners, there is an effect that the first member and the second member are relatively difficult to rotate with respect to the stress in the rotation direction.

It is preferable that the axial end of the rotating shaft R1 of the convex portion is provided with an inclined portion that is inclined so as to gradually increase toward the center of the convex portion. Further, it is preferable to provide an inclined portion that is inclined so as to gradually become deeper toward the center of the groove portion at the axial end portion of the rotating shaft R1 of the groove portion. By providing the inclined portion, there is an effect that a gap is less likely to be generated between the inclined portion and the convex portion or the groove portion of the first member in the spinning process of the second member. As specific examples of the inclined portion, FIGS. 5 (B) and 5 (C) show a linearly inclined inclined portion 13A, and FIG. 5 (D) shows an inclined portion 13B inclined in a curved shape.

It is preferable that the cross-sectional area of the convex portion when the convex portion is viewed in a plan view is gradually reduced in the height direction. Further, it is preferable that the cross-sectional area of the groove portion when the groove portion is viewed in a plan view is gradually reduced in the depth direction. As a result, in the spinning process of the second member, there is an effect that a gap is less likely to be generated between the convex portion or the groove portion of the first member.

The coupling structure of the first embodiment is a structure in which the second member is plastically deformed by being pressed by a processing roller 7 from the outside of the second member, but the coupling between the first member and the second member is the first member. May be plastically deformed by pressing the first member with a processing roller. In the latter case, a groove and / or a convex portion that is intermittent or continuous in the axial direction of the rotating shaft R1 is provided inside the tubular second member, and spinning is performed from the inside of the tubular first member. Can be obtained by

[Second Embodiment]
FIG. 6 is a schematic explanatory view showing a manufacturing process of the combined structure according to the second embodiment of the present invention by the spinning processing apparatus. FIG. 6A is a schematic explanatory view showing a step of joining the outer peripheral surface of the first member 1C to the inner peripheral surface of the second member 2B by performing the spinning process from the inside of the first member 1C. FIG. 6B is a schematic explanatory view showing the coupling structure of the second embodiment at the end of the spinning process. 6 (C) is a view seen from the direction of the X1 arrow of FIG. 6 (B), and FIG. 6 (D) is a view seen from the direction of the X2 arrow of FIG. 6 (B).
The coupling structure of the second embodiment is formed in the second member 2B arranged so as to cover the first member 1C by spinning from the inside of the tubular first member 1C using a processing roller 7. The outer peripheral surface of the first member 1C is coupled to the peripheral surface.

On the inner peripheral surface of the second member 2B, a convex portion 12E continuous in the axial direction of the rotation shaft R1 is formed. The shape of the convex portion 12E is the same as that of the convex portion 12A of the first embodiment. Further, the first member 1C is a tubular member having a collar structure with an enlarged diameter at the end.

Since the bonded structure of the second embodiment needs to be spinning from the inside of the first member, the shape of the first member is limited to a tubular one. On the other hand, the bonded structure of the first embodiment has an advantage of high versatility because the shape of the first member does not need to be tubular. Further, since the bonded structure of the first embodiment is spinned from the outside, it can be operated while visually observing the processing roller, and has an advantage of excellent workability.

The coupling structure of the present invention can be used as a coupling structure between the second member and the first member arranged inside the second member. Further, it can be used as a bonded structure of a first member and a second member, which is strongly bonded to stress in the rotational direction.

The method for manufacturing a bonded structure of the present invention can be used as a method for manufacturing a bonded structure between a second member and a first member arranged inside the second member. Further, it is a bonded structure of the first member and the second member, and can be used in a method for manufacturing a bonded structure that is strongly bonded to stress in the rotational direction.

1A, 1B, 1C ... 1st member, 11 ... Main body, 12A, 12B, 12C, 12D, 12E ... Convex part, 13 ... Through hole, 14A, 14B ... Groove part, 2A, 2B ... 2nd member, 21 ... Locking Part, 22 ... Concave structure, 3 ... Rotating table, 4 ... Fixed part, 5 ... Insert hole, 6 ... Inserting part, 7 ... Machining roller, 10 ... Spinning processing device, R1 ... Rotating shaft of first member and second member , R2 ... Rotating shaft of processing roller

Claims (6)

It is a coupling structure of a first member and a tubular second member that is coupled with the first member arranged inside.
An axially intermittent or continuous groove or protrusion is formed on the outside of the first member.
By applying spinning processing to the second member while the second member covers the groove or convex portion of the first member, the first member and the second member are joined so as not to rotate relatively in the circumferential direction. A bonded structure characterized by being The bonded structure according to claim 1, wherein the first member or the end portion of the convex portion is covered with the second member by performing a spinning process. It is a connecting structure of a tubular first member and a tubular second member that is joined with the first member arranged inside.
An axially intermittent or continuous groove or protrusion is formed inside the second member.
By applying spinning processing to the first member while the first member covers the groove or convex portion of the second member, the first member and the second member are joined so as not to rotate relatively in the circumferential direction. A bonded structure characterized by being The bonded structure according to claim 3, wherein the second member or the end portion of the convex portion is covered with the first member by performing a spinning process. In the method for manufacturing a bonded structure composed of a first member and a second member,
A step of forming an axially intermittent or continuous groove or convex portion on the outside of the first member,
A step of spinning the second member while the second member covers the groove or the convex portion of the first member.
A method for producing a bonded structure, which comprises. In the method for manufacturing a bonded structure composed of a first member and a second member,
A step of forming an axially intermittent or continuous groove or convex portion inside the second member, and
A step of spinning the first member while the first member covers the groove or the convex portion of the second member.
A method for producing a bonded structure, which comprises.