JP4474911B2 - Method of manufacturing cup-shaped part with boss and molding apparatus therefor - Google Patents

Description

  The present invention relates to a method of manufacturing a cup-shaped part with a boss used for a housing of a clutch device or the like, and a molding apparatus for the same.

  Conventionally, a method of manufacturing a cup-shaped part with a boss used for a housing of a clutch device or the like is performed by pressing a disk-shaped member inward from the outer periphery with a pressing roller (see Patent Document 1). .

  However, according to the above prior art, since the amount of deformation of the disk-shaped member is large, the metal flow of the boss part is disturbed, and thus cracks are likely to occur when a material having low ductility is used as the material of the disk-shaped material. Become. Accordingly, the range of material selection for parts is reduced. Furthermore, it is necessary to apply a large pressing force to the disk-shaped material, and thus a machine having high rigidity must be used.

Therefore, a disc-shaped material having a predetermined outer diameter and an inner diameter is formed into a predetermined frusto-conical shape by drawing a portion where a boss portion is to be formed with a frusto-conical mandrel, and then to a mandrel. Is replaced with a finishing mandrel, a roller is pressed along the small-diameter circumferential portion of the finishing mandrel, and the conical inclined surface is pressed at right angles to form a concentric boss with a predetermined length. There is a known method (see Patent Document 2).
Japanese National Patent Publication No. 9-506295 JP-A-10-305322

  However, according to the prior art described in the above-mentioned Patent Document 2, since the portion where the circular boss portion is to be formed is formed into a predetermined frustoconical shape by drawing, there is a problem that the processing time becomes long. There is. Furthermore, it is necessary to prepare a mandrel for forming a frustoconical shape and replace it with a finishing mandrel in the middle.

  The present invention has been made to solve the above problems, and by passing the boss forming roller once, the boss portion and shoulder portion of the bossed cup shape, the deformation amount of the disk-shaped material is reduced, It is an object of the present invention to provide a bossed cup-shaped part manufacturing method and molding apparatus that can be molded with high accuracy and high efficiency.

  In order to solve the above problem, a method for manufacturing a cup-shaped part with a boss described in claim 1 forms a boss guide part for molding a boss part of a cup-shaped part with a boss, and a cup part. A fixing step of fixing a disk-shaped material to a mandrel comprising a cup guide portion for forming a shoulder and a shoulder guide portion formed between the boss guide portion and the cup guide portion, and the mandrel The mandrel is rotated together with the material about the axis of the mandrel, and the boss forming roller is moved relative to the mandrel in the axial direction along the boss guide portion of the mandrel while the boss forming roller is pressed against the material. Then, the boss forming roller is moved along the shoulder guide portion of the mandrel from the center side in the direction perpendicular to the axis, and the shoulder portion is formed by drawing. A boss forming step and a cup for forming a cup portion by relatively moving the cup forming roller in the axial direction along the cup guide portion of the mandrel while pressing the cup forming roller against the material on which the boss portion and the shoulder portion are formed. And a molding step.

  The method for manufacturing a cup-shaped part with a boss described in claim 2 is the method for manufacturing a cup-shaped part with a boss according to claim 1, wherein the mandrel is formed in the disk shape before the boss forming step. While rotating together with the material, press the preforming roller against the disk-shaped material and move it relative to the axial direction along the cup guide part of the mandrel to preform the disk-shaped material into a cup shape by drawing. The method further includes a preforming step.

  The method for manufacturing a cup-shaped part with a boss described in claim 3 is the method for manufacturing a cup-shaped part with a boss according to claim 1, wherein the cup guide part of the mandrel is provided on the inner surface of the cup part. An internal tooth forming tooth mold for forming an internal tooth is formed, and in the cup forming step, the internal tooth forming tooth is pressed in a state where the cup forming roller is pressed against a material formed with a boss part and a shoulder part. It is an internal tooth forming process in which internal teeth are formed on the inner surface of the cup portion by relatively moving along the mold in the axial direction of the mandrel.

  The method for manufacturing a cup-shaped part with a boss described in claim 4 is the method for manufacturing a cup-shaped part with a boss according to any one of claims 1 to 3, wherein the rotation axis of the boss-forming roller is the center of a mandrel. The disc-shaped material is pressed in a state inclined to the side at a predetermined angle.

  The molding apparatus according to claim 5 is a molding apparatus for molding a cup-shaped part with a boss from a disk-shaped material, and a boss guide part for molding the boss part and a cup guide for molding the cup part. A mandrel that is formed between the boss guide part and the cup guide part and is formed between the boss guide part and the cup guide part, and is supported on the base so as to be rotatable about an axis, Fixing means for fixing the mandrel to the mandrel so that the center of the material coincides with the axis, mandrel rotating means for rotating the mandrel, and movement mounted on the base so as to be relatively movable in the axial direction with respect to the mandrel A table, a boss forming roller supported rotatably, and a boss forming roller head mounted on the moving table so as to be movable in a direction perpendicular to the axial direction of the mandrel; And a cup-forming roller head mounted on the moving base so as to be movable in a direction perpendicular to the axial direction of the mandrel, and the boss-forming roller along the boss guide portion and the shoulder guide portion of the mandrel. In order to form the boss part and the shoulder part by drawing, the movable table is relatively moved in the axial direction and the boss forming roller head is moved in a direction perpendicular to the axial line, and the cup forming roller is moved to the cup part of the mandrel. And a moving means for relatively moving the moving table in the axial direction in order to form a cup portion by drawing along the axis.

  A molding apparatus according to a sixth aspect is characterized in that, in the molding apparatus according to the fifth aspect, the central axis of the boss molding roller is inclined at a predetermined angle toward the center side of the mandrel.

  The molding apparatus according to claim 7 is the molding apparatus according to claim 5 or 6, wherein the cup guide portion of the mandrel is formed with an inner tooth for molding inner teeth on the inner surface of the cup portion. A tooth mold is formed.

  According to the method for manufacturing a cup-shaped part with a boss according to claim 1, since the shoulder portion is formed by drawing after the boss portion is drawn, smooth molding is possible without large wall thickness fluctuations. In addition, the boss part and the shoulder part can be formed into a predetermined shape with high accuracy. In addition, the disk-shaped material is rotated while being fixed to the mandrel, and the boss forming roller is relatively moved along the boss guide portion of the mandrel in the axial direction of the mandrel to draw the boss portion of the component. Since the shoulder portion is formed by moving along the shoulder guide portion, the boss portion and the shoulder portion can be formed with high efficiency and high accuracy by passing the boss forming roller once.

  According to the method for manufacturing a cup-shaped part with a boss according to claim 2, since the boss portion is formed after preforming the disk-shaped material into a cup shape, a disk-shaped material having a particularly large outer diameter is formed. When this occurs, it is possible to effectively prevent wrinkles and the like from occurring.

  Moreover, since the boss portion is formed after the disk-shaped material is formed into a cup shape, the material is covered with a mandrel when the boss portion is formed. For this reason, since the cup-shaped material is stably fixed to the mandrel, stable boss molding can be performed.

  According to the method for manufacturing a bossed cup-shaped part according to claim 3, since the internal teeth can be formed inside the cup simultaneously with the formation of the cup portion, the internal teeth can be processed with high accuracy. .

  Furthermore, according to the method for manufacturing a bossed cup-shaped part according to claim 4, the boss forming process is performed in a state where the boss forming roller is inclined at a predetermined angle toward the center side of the mandrel. The shoulder of the part can be drawn more reliably and easily.

  According to the molding apparatus of claim 5, since the boss part and the shoulder part are formed by drawing, there is no large thickness variation, and smooth molding is possible, and the boss part and the shoulder part have a predetermined shape. It can be molded with high precision. Further, the boss part and the shoulder part can be formed with high accuracy and high efficiency by passing the boss forming roller once.

  According to the molding apparatus of the sixth aspect, since the boss molding roller is inclined at a predetermined angle toward the center of the mandrel, the shoulder of the cup-shaped part with the boss can be drawn more reliably and easily. It can be carried out.

  According to the shaping | molding apparatus described in Claim 7, an internal tooth can be processed with high precision inside a cup part simultaneously with shaping | molding of a cup part.

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. First, the molding apparatus used in the present embodiment will be described with reference to FIGS.
In the present embodiment, FIG. 1 shows a front view of the molding apparatus of the present embodiment. FIG. 2 is a cross-sectional view of the molding apparatus viewed from the direction of arrow A in FIG. In FIG. 2, the lower side is the front side of the molding apparatus (the side on which the operator performs the operation work, and the front side of the machine). FIG. 3 is a front view of the drive device for the cup-forming roller. FIG. 4 is an explanatory diagram of a boss forming roller. FIG. 5 is an explanatory diagram of the preforming roller. FIG. 6 is an explanatory view showing a state in which a disk-shaped material is fixed to the mandrel.
Here, the x direction in FIG. 1 is the back-to-front direction of the molding apparatus, the y direction is the left-right direction, and the z direction is the up-down direction.

  As shown in FIGS. 1 and 2, the molding apparatus of the present embodiment has a mandrel 2 that is rotatably attached to a base 10, a tailstock 5, and a rotation that rotates the mandrel 2 and the tailstock 5. And a mechanism 4. Further, the roller includes a boss forming roller 60, a preforming roller 70, and a cup forming roller 80. Further, as a mechanism for moving these rollers 60, 70, 80, the elevator head 20 to which these roller heads 61, 71, 81 are attached so as to be able to advance and retreat, and the driving of each roller head attached to the elevator base 20. Devices 64, 74, 84.

  The mandrel 2 functions as a mold for forming the disc-shaped material 1 into a bossed cup shape. As shown in FIG. 6, the mandrel 2 forms a boss guide portion 2 </ b> A for forming a boss portion of a cup-shaped part with a boss on the disk-shaped material 1 and a cup portion on the disk-shaped material 1. The cup guide portion 2B is formed between the boss guide portion 2A and the cup guide portion 2B, and a shoulder guide portion 2E for molding the shoulder portion. The cup guide portion 2B is formed with an internal tooth forming tooth mold 2C for forming internal teeth on the inner surface of the cup portion.

  The tailstock 5 has a function of fixing the disc-shaped material 1 by driving the tailstock drive 6 as shown in FIG. The tailstock driving device 6 is a hybrid actuator unit, for example, and includes a motor, a coupling, a pump, a reservoir, and a tailstock feed cylinder 6a. That is, the tailstock driving device 6 has a structure in which one end of the tailstock feed cylinder 6a is attached to the upper body 40 and the tailstock 5 is provided at the other end. The disc-shaped material 1 can be fixed by sandwiching the disc-shaped material 1 with an arbitrary pressure between the mandrel 2 and the mandrel 2. Here, since the tailstock 5 is rotatably supported by the tailstock feed cylinder 6a through, for example, a thrust bearing mechanism 5a, the mandrel 2 is held between the mandrel 2 and the mandrel 2 by rotation. It is configured to be able to rotate together with the disk-shaped material 1. The mandrel 2 is formed with a pin portion 2D for sandwiching the disk-shaped material 1, and the disk-shaped material 1 has a hole 1A at its center. Then, the disc-shaped material 1 is concentrically fixed to the mandrel by fitting the hole 1A to the pin portion 2D and holding the hole 1A on the pin portion 2D.

  The rotation mechanism 4 has a function of rotating the disk-shaped material 1 together with the mandrel 2 and the tailstock shaft 5 by making the center of the disk-shaped material 1 coincide with the axis of the mandrel 2. The spindle drive device 4 includes, for example, a spindle motor 4a, a belt 4b that transmits the rotation of the spindle motor, and the spindle head 3.

  The boss forming roller 60 is for pressing the disk-shaped material 1 set on the mandrel 2 to form a boss portion. In other words, the boss forming roller 60 can form the boss portion by moving the boss forming roller 60 in the axial direction of the mandrel 2 along the boss guide portion 2B of the mandrel 2 while pressing the disk-shaped material 1. is there. The boss forming roller 60 is rotatably attached to the roller head 61 as shown in FIG. The boss forming roller 60 is inclined by a predetermined angle θ toward the center side of the mandrel 2. Although the magnitude | size of this angle (theta) is not specifically limited, It can be set as 1-10 degrees, Preferably it is 4-6 degrees.

  The preforming roller 70 is a roller for preforming the cup portion by drawing. That is, the preforming roller 70 can preform the cup portion by moving it in the axial direction of the mandrel 2 along the cup guide portion 2B of the mandrel 2 while being pressed against the disc-shaped material 1. It is. As shown in FIG. 5, the preforming roller 70 is rotatably attached to the roller head 71.

  The cup forming roller 80 is a roller for forming the cup portion by pressing the material 1 along the cup guide portion 2B of the mandrel, and the mandrel 2 along the cup guide portion 2B of the mandrel 2 in a state where the material 1 is pressed. The cup portion is formed by moving in the axial direction. In the case where the internal tooth forming tooth mold 2C is formed on the cup guide portion 2B of the mandrel 2, the cup forming roller 80 is filled with the raw material 1 in the internal tooth forming tooth mold 2C. It can be molded. The cup forming roller 80 is rotatably attached to the roller head 81 as shown in FIG.

  The lifting platform 20 functions as the moving table. That is, it has a function of moving the boss forming roller 60, the pre-forming roller 70 and the cup forming roller 80 in the axial direction of the mandrel 2 by the lifting platform driving devices 25 and 26. The lifting platform 20 is slidably supported by columns 132 and 133 fixed upright on the base 10, and an upper body 40 is provided at the upper ends of the columns 132 and 133. Table drive devices 25 and 26 are provided. Each of the elevator drive devices 25 and 26 is, for example, a hybrid actuator unit, and includes a motor, a coupling, a pump, a reservoir, and elevator platform feed cylinders 25a and 26a. In other words, one end of the lift base feed cylinders 25a, 26a is attached to the upper body 40, and the other end is attached to the lift base 20, and the pressure oil from the pump is supplied to the lift base feed cylinders 25a, 26a. By doing so, the lifting platform 20 is configured to slide in the vertical direction between the upper body 40 and the base 10.

  The driving devices 64, 74, and 84 have a function of moving the boss forming roller 60, the pre-forming roller 70, and the cup forming roller 80 in a direction perpendicular to the axis of the mandrel. The drive devices 64, 74, and 84 are constituted by a motor Mt, a coupling Cp, a pump Pm, a reservoir Rs, a hydraulic cylinder Hc, and a piston p as a representative of the drive device 84 shown in FIG. The piston p is configured to be attached to the roller head 81, and the cup-forming roller 80 is moved in a direction perpendicular to the axis of the mandrel 2 by supplying pressure oil from the pump Pm to the hydraulic cylinder Hc. It is configured.

  A method of manufacturing a cup-shaped part with a boss by the molding apparatus will be described with reference to FIGS.

  First, as shown in FIG. 6, the disk-shaped material 1 is fixed to the mandrel 2. Here, the mandrel 2 uses a pin formed with a pin portion 2D for sandwiching the disk-shaped material 1, and the disk-shaped material 1 uses a hole having a hole 1A formed at the center thereof. Then, the disc-shaped material 1 is fixed to the mandrel 2 by fitting the hole 1A to the pin portion 2D and sandwiching it with the tailstock shaft 5 (FIG. 6).

  Next, the spindle driving device 4 is driven to rotate the mandrel 2 around the axis of the mandrel 2. Thereby, the disk-shaped raw material 1 and the tailstock 5 rotate together with the mandrel 2 through the thrust bearing mechanism 5a.

  Then, the elevator drive devices 25 and 26 and the drive device 74 are driven to set the preforming roller 70 in a portion corresponding to the cup portion of the disk-shaped material 1, and the disk-shaped material as shown in FIG. The mandrel 2 is moved along the cup guide portion 2B of the mandrel 2 while driving the lifting platform driving devices 25 and 26 while the 1 is rotated to press the preforming roller 70 against the disk-shaped material 1. The disk-shaped material 1 is drawn (FIG. 7). Thereby, the disk-shaped raw material 1 is preformed into a cup shape as shown in FIG. At this time, the inner surface of the cup-shaped material 1 is pressed against the tooth mold 2 </ b> C for forming the internal teeth of the mandrel 2. Therefore, the cup-shaped material 1 is securely fixed to the mandrel 2. Thereafter, the elevator platform driving devices 25 and 26 are driven to retract the elevator platform 20 upward, and the driving device 74 is further driven to retract the roller head 71 of the preforming roller 70 to the original position.

  Next, the driving device 64 is driven to set the boss forming roller 60 in a portion corresponding to the boss portion of the preformed material 1, and the elevator drive devices 25 and 26 are driven to drive the material 1 to the boss forming roller. The boss forming roller 60 is moved along the boss guide portion 2A of the mandrel 2 in the axial direction of the mandrel 2, that is, in the direction of the arrow C in FIG. When the formation of the boss portion is completed, the lifting platform driving devices 25 and 26 are stopped. Then, the driving device 64 is driven to move the boss forming roller 60 along the shoulder guide portion 2E from the center side in a direction perpendicular to the axis of the mandrel 2 (in the direction of arrow D), and the shoulder portion is drawn by drawing. Mold. At this time, since the material 1 is securely fixed to the mandrel 2, it is not deformed or moved by the load of the boss forming roller 60. Therefore, it can be stably molded against the load of the boss forming roller 60. Further, since the boss forming roller 60 is inclined to the mandrel side by a predetermined angle θ, only the outer peripheral portion of the boss forming roller 60 contacts the material 1 when the shoulder portion is formed. Thereby, when shaping | molding a shoulder part, the range which the roller 60 contact | abuts to the raw material 1 can be made small. Therefore, the shoulder can be easily formed. Thereafter, each of the lifting platform driving devices 25 and 26 is driven to retract the lifting platform 20 upward, and the driving device 64 is driven to retract the roller head 61 of the boss forming roller 60 to the original position. In addition, you may perform a cup molding process continuously, without retracting the raising / lowering stand 20 after completion | finish of a boss | hub formation process.

  Next, the drive device 84 is driven, the cup forming roller 80 is set in a portion corresponding to the cup portion of the material 1 in which the boss portion and the shoulder portion are formed, and the lift platform drive devices 25 and 26 are driven. While pressing the cup forming roller 80 against the material 1, the cup forming roller 80 is moved along the cup guide portion 2B in the axial direction of the mandrel 2 (in the direction of arrow E in FIG. 10) to form the cup portion by drawing. . At this time, the inner surface of the cup portion is completely filled in the internal tooth forming tooth mold 2C. Therefore, internal teeth are formed on the inner surface of the cup portion. Thereafter, the lifting platform driving devices 25 and 26 are driven to retract the lifting platform 20 to the original position, and the driving device 84 is driven to retract the roller head 81 of the cup forming roller 80 to the original position. In this way, a cup-shaped part with a boss is formed.

(Second Embodiment)
Next, a method for manufacturing a bossed cup-shaped component according to the second embodiment will be described with reference to FIGS. 6, 11, and 12. Note that the molding apparatus of the present embodiment is the same as that of the first embodiment, and thus the description thereof is omitted.
First, the disk-shaped material 1 is fixed to the mandrel 2. The method for fixing the disc-shaped material 1 to the mandrel 2 is the same as that in the first embodiment (FIG. 6).

  Next, the spindle driving device 4 is driven to rotate the mandrel about the axis of the mandrel 2. Thereby, the disk-shaped raw material 1 and the tailstock 5 rotate together with the mandrel 2 through the thrust bearing mechanism 5a.

  Next, each of the lifting platform driving devices 25 and 26 and the driving device 64 is driven to set the boss forming roller 60 to a portion corresponding to the boss portion of the disk-shaped material 1, and as shown in FIG. The axis driving direction of the mandrel 2 along the boss guide portion 2A of the mandrel 2, that is, the direction of the arrow C in FIG. By moving the boss, the boss is formed by drawing. And when shaping | molding of a boss | hub part is complete | finished, each lifting platform drive device 25 and 26 is stopped. Then, by driving the driving device 64, the boss forming roller 60 is moved from the center side in a direction perpendicular to the axis of the mandrel 2, that is, in the direction of arrow D in FIG. To do. Thereafter, each of the lifting platform driving devices 25 and 26 is driven to retract the lifting platform 20 upward, and the driving device 64 is driven to retract the roller head 61 of the boss forming roller 60 to the original position. In addition, you may perform a cup molding process continuously, without retracting the raising / lowering stand 20 after completion | finish of a boss | hub formation process.

  Next, the drive device 84 is driven to set the cup forming roller 80 in a portion corresponding to the cup portion of the material 1 with the boss portion and the shoulder portion formed, and each elevator drive device in a state where the material 1 is rotated. 25 and 26 are driven to press and move the cup forming roller 80 against the material 1. Thereby, the raw material 1 is shape | molded in cup shape by a drawing process. At this time, the inner surface of the cup portion is pressed against the internal tooth forming tooth mold 2 </ b> C formed in the cup guide portion, and the inner teeth are formed on the inner surface of the cup portion. Thereafter, each of the lifting platform driving devices 25 and 26 is driven to retract the lifting platform 20 to the original position, and the driving device 84 is driven to retract the roller head 81 of the cup forming roller 80 to the original position. In this way, a cup-shaped part with a boss is formed.

  According to the bossed cup-shaped component manufacturing method of the first and second embodiments described above, the boss forming roller 60 is moved along the boss guide portion of the mandrel 2 in the axial direction of the mandrel 2 and drawn. After that, the boss part is formed, and then the boss forming roller 60 is moved in the direction perpendicular to the axis of the mandrel 2 from the center side, and the shoulder part is formed by drawing, so there is no large wall thickness fluctuation and smooth. Molding becomes possible. Further, the boss forming roller 60 can be performed with high efficiency, high accuracy, and low cost by passing the boss forming roller 60 once through the boss guide portion 2A and the shoulder guide portion 2E without replacing the mandrel.

In addition, this invention is not limited to the said embodiment, A various change is possible.
For example, the method of sandwiching the disk-shaped material 1 is not limited to the method of the present embodiment, and a hole that does not penetrate the disk-shaped material is formed, and the pin portion 2D of the mandrel 2 is fitted in this hole. May be.

  Further, in the present embodiment, the mandrel 2 having the cup guide portion 2B formed with the internal teeth shaping tooth mold 2C is used. However, if the component has no internal teeth, the internal tooth shaping tooth mold 2C is An unformed mandrel is used.

  Furthermore, the outer shape of the cup guide portion 2B of the mandrel 2 is not limited to a cylindrical shape as shown in FIG. 6 and the like, and a conical shape or a multistage shape can be used according to the shape of the part.

  In the molding apparatus according to the present embodiment, the boss molding roller 60, the preforming roller 70, and the cup molding roller 80 are mounted at the same height on the lifting platform 20 having only one stage. Further, a plurality of steps as the lifting platform 20 may be used, and the heights of the rollers 60, 70, and 80 may be different. Thus, since the molding can be performed with the phase shifted, preliminary molding, boss molding, and cup molding can be performed only by reciprocating the lifting platform once.

  In addition, the molding apparatus of the present embodiment has a configuration in which three rollers are provided, but the number of rollers is not particularly limited, and may be changed according to the shape and application of the parts to be manufactured. it can.

  In the first embodiment, the preforming roller 70 can also serve as the cup forming roller 80, and the preforming and the cup forming may be performed by the same roller. Even when cup molding is performed by the preforming roller 70, the inner teeth can be molded together with the cup molding. In this case, the preforming can be performed by using two rollers of the preforming roller 70 and the cup forming roller 80, and the cup can be formed by using these two rollers.

  Furthermore, in this embodiment, preforming, boss molding, and cup molding are performed by one apparatus, but these steps can also be performed by individual apparatuses.

It is a front view of the shaping | molding apparatus of this embodiment. It is sectional drawing of the shaping | molding apparatus seen from the A arrow direction of FIG. 3 is a front view of a drive device for a cup forming roller 80. FIG. It is explanatory drawing of the boss | hub formation roller attached to the shaping | molding apparatus of this Embodiment. It is explanatory drawing of the preforming roller attached to the shaping | molding apparatus of this Embodiment. It is explanatory drawing which shows the state which fixed the disk-shaped raw material to the mandrel. It is explanatory drawing which shows the state by which the preforming roller was pressed by the disk-shaped raw material in 1st Embodiment. It is explanatory drawing which shows the state by which the disk-shaped raw material was preformed in 1st Embodiment. It is explanatory drawing which shows the process of shape | molding a boss | hub part and a shoulder part in 1st Embodiment. It is explanatory drawing which shows a cup formation process in 1st Embodiment. It is explanatory drawing which shows the process of shape | molding a boss | hub part and a shoulder part in 2nd Embodiment. In 2nd Embodiment, it is explanatory drawing which shows a cup formation process.

Explanation of symbols

  1 material, 2 mandrel, 5 tailstock, 6 tailstock drive, 10 base, 20 lift, 25 lift drive, 40 upper body, 60 boss forming roller, 70 preforming roller, 80 cup forming roller 61, 71, 81 Roller head, 64, 74, 84 Roller drive device.

Claims (7)

A boss guide part for molding a boss part of a cup-shaped part with a boss, a cup guide part for molding the cup part, and a shoulder part formed between the boss guide part and the cup guide part. A fixing step of fixing a disk-shaped material to a mandrel provided with a shoulder guide portion for
The mandrel is rotated together with the material around the mandrel axis, the boss forming roller is pressed against the material and moved relative to the mandrel in the axial direction along the boss guide portion of the mandrel, and the boss is drawn by drawing. A boss forming step of forming a shoulder portion by moving the boss forming roller along the shoulder guide portion of the mandrel from the center side in a direction perpendicular to the axis line, and forming the shoulder portion by drawing.
A cup molding step of molding the cup part by relatively moving the cup molding roller in the axial direction along the cup guide part of the mandrel in a state where the boss part and the shoulder part are pressed against the molded material. A method for producing a bossed cup-shaped part. 2. The method of manufacturing a cup-shaped part with a boss according to claim 1, wherein the preforming roller is pressed against the disk-shaped material in a state where the mandrel is rotated together with the disk-shaped material before the boss forming step. A bossed cup-shaped component, further comprising a preforming step of pre-molding the disk-shaped material into a cup shape by drawing by relatively moving in the axial direction along the cup guide portion of the mandrel. Manufacturing method. In the method of manufacturing a bossed cup-shaped part according to claim 1, an internal tooth forming tooth mold for forming internal teeth on the inner surface of the cup part is formed on the cup guide part of the mandrel,
In the cup forming step, the cup forming roller is relatively moved in the axial direction of the mandrel along the inner tooth forming tooth mold in a state in which the cup forming roller is pressed against a material formed with a boss portion and a shoulder portion. A method for manufacturing a cup-shaped part with a boss, which is an internal tooth forming step of forming internal teeth on an inner surface. In the method for manufacturing a bossed cup-shaped part according to claim 1,
The boss forming roller presses the disk-shaped material in a state in which a rotation axis is inclined at a predetermined angle toward the center side of the mandrel, and a manufacturing method of a cup-shaped part with a boss. In a molding device that molds cup-shaped parts with bosses from a disk-shaped material,
A boss guide part for forming the boss part, a cup guide part for forming the cup part, and a shoulder guide part formed between the boss guide part and the cup guide part for forming a shoulder part; A mandrel supported on a base so as to be rotatable around an axis, and
A fixing means for fixing the center of the disc-shaped material to the mandrel so as to coincide with the axis,
Mandrel rotating means for rotating the mandrel;
A moving table mounted on the base so as to be movable relative to the mandrel in the axial direction;
A boss forming roller head that is rotatably supported by a boss forming roller and is mounted on the movable table so as to be movable in a direction perpendicular to the axial direction of the mandrel;
A cup-forming roller head that is rotatably supported by a cup-forming roller and is mounted on the moving table so as to be movable in a direction perpendicular to the axial direction of the mandrel;
In order to form the boss portion and the shoulder portion by drawing the boss forming roller along the boss guide portion and the shoulder guide portion of the mandrel, the moving base is relatively moved in the axial direction, and the boss forming roller head is axially moved. Moving means for relatively moving the moving base in the axial direction in order to form the cup part by drawing the cup forming roller along the cup part of the mandrel. Characteristic molding device. The molding apparatus according to claim 5, wherein
2. A molding apparatus according to claim 1, wherein a central axis of the boss molding roller is inclined at a predetermined angle toward a center side of the mandrel. In the shaping | molding apparatus described in Claim 5 or 6,
2. A molding apparatus according to claim 1, wherein the cup guide part of the mandrel is formed with an internal tooth forming tooth mold for forming internal teeth on the inner surface of the cup part.

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