JPH10323734A - Forming equipment for cup like socket - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a forming equipment capable of obtaining safely and constantly the materials of cup shaped sockets of which an inside shape is stable. SOLUTION: A plurality of dices 17 which forms a fixed inside shape are set in the inside side of the cup shape materials 4. Inside dice 17 is fit, as to be freely slidable, to an inside dice base 11. Mandrel 10 is fit to move the inside dice 17 to a forming position. A dice 3 which forms a fixed outside shape at the surface of a cup shaped material 4 of which the inner side is of cup shape. An outside dice 3 is fit to an outside dice base 2 as to be freely slidable. And operation measure 3 is arranged to move the outside dice 22 to the forming position. The outside dice 3 is arranged to give a predetermined pressure to the outside face of the material.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for forming a cup-shaped socket member applied to an outer ring member or the like of a ball joint.

[0002]

2. Description of the Related Art As a molding apparatus of this kind, for example, one described in Japanese Patent Application Laid-Open No. 24545/1984 is known.

The conventional molding device is provided rotatably in a radial direction of a cup-shaped material forming a cup-shaped socket member, and enters into the material socket to form its own spherical outer peripheral portion into a socket. A plurality of split dies facing the inner peripheral surface, a mandrel for rotating the split dies to a molding position, and a dispersed mandrel disposed on the outer peripheral side of the cup-shaped material, which advance toward the outer peripheral surface of the material and Are provided with a plurality of press-formed members for deforming the outer peripheral surface by pressure. The plurality of split dies are rotatably supported by supporting a middle portion of the split dies on a movable base by a pivot pin.
In addition, the movement of the plurality of press-formed members to the outer peripheral surface of the material is performed by an annular actuator integrally formed on the moving table pressing the press-formed members inward in the radial direction.

In such a molding apparatus, while the cup-shaped material is supported by a holding die, a split die is rotated by a mandrel to form a spherical shape inside the socket, and the outer peripheral portion of the socket is pressed. The cup-shaped socket member is obtained by being pressed by the molded member.

[0005]

However, in the prior art, the movement of the annular actuator for pressing the pressing member inward in the radial direction is caused by the movement of the holding base to which the holding die for the cup-shaped material is attached. Stop by the stopper.

For this reason, when the thickness of the material varies, it is necessary to sufficiently press the cup-shaped material between the split die forming the spherical shape inside the socket and the pressing member. Therefore, there is a possibility that a predetermined inner surface shape cannot be obtained.

The present invention has been devised in view of the above-mentioned conventional circumstances, and has as its object to provide an apparatus for forming a cup-shaped socket member capable of stably obtaining an inner surface shape.

[0008]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a molding apparatus for molding a cup-shaped socket member from a cup-shaped material, wherein a plurality of cup-shaped socket members are arranged on the inner peripheral side of the cup-shaped material. An inner die whose outer peripheral side forms a predetermined inner surface shape on an inner peripheral surface of a cup-shaped material, an inner die base to which the inner die is attached, a mandrel for moving the inner die to a molding position, and the cup A plurality of outer dies are arranged on the outer peripheral side of the cup-shaped material, and the inner peripheral side thereof forms a predetermined outer surface shape on the outer peripheral surface of the cup-shaped material, and the outer die moves toward the outer peripheral surface of the cup-shaped material. An outer die base movably mounted, and operating means for moving the outer die to a molding position, wherein the outer die applies a predetermined pressing force to the cup-shaped material. , Are to movably mounted comprising configuration toward the outer circumferential surface of the material.

According to a second aspect of the present invention, in the configuration of the first aspect, the cup-shaped material is supported by an outer die, and the outer surface of the bottom of the material near the outer periphery is formed by the outer die. , And the outer surface near the center line is supported without contacting the outer die.

According to a third aspect of the present invention, in the configuration of the first aspect, the inner die is attached to the inner die base so as to be slidable in a radial direction of a cup-shaped material. The outer die is slidably attached to the outer die base in the radial direction of the cup-shaped material, and the mandrel is attached to the outer die as the mandrel moves the inner die to the molding position. An operating means for moving the outer die to the forming position in contact therewith is connected.

According to this configuration, the inner die arranged on the inner peripheral side of the cup-shaped material is moved to the molding position by the mandrel, and the inner peripheral surface of the cup-shaped material is formed and processed. A predetermined inner surface shape is formed on the inner peripheral surface of the shape-like material. At the same time, the outer die moves toward the outer peripheral surface of the cup-shaped material by the operating means to reach the molding position, and the inner peripheral surface of the outer die presses the outer peripheral surface of the cup-shaped material to form a cup-shaped material. A predetermined outer surface shape is formed on the outer peripheral surface of the material. At the same time, the outer die presses the inner peripheral side of the cup-shaped material against the inner die, so that a predetermined inner surface shape is formed on the inner peripheral surface of the cup-shaped material. Thereby, a cup-shaped socket member is obtained.

Here, the outer die is movable until a predetermined pressing force is applied to the cup-shaped material. Therefore, when the inner die moves to the molding position and forms a predetermined inner surface shape on the inner peripheral surface of the cup-shaped material, a predetermined pressing force is applied to the cup-shaped material from the outer peripheral side by the outer die. Given. As a result, the inner peripheral surface of the cup-shaped material is pressed by the inner die with a predetermined pressing force, and the inner die is surely formed by the inner die.

Therefore, a molding apparatus for a cup-shaped socket member capable of stably obtaining an inner surface shape is obtained.

According to the second aspect of the present invention, the cup-shaped material is supported such that an outer surface near a center line of a bottom portion of the material does not contact an outer die.
According to the third aspect of the present invention, the outer surface near the center line of the bottom of the material is supported in a state of not contacting the outer die base, so that the inner die contacts the bottom of the material. The bottom of this material can be elastically deformed outward. Therefore, when the inner die moves to the molding position, the movement can be easily performed,
By this inner die, a predetermined inner surface shape is stably formed on the inner peripheral surface of the cup-shaped material.

According to the third aspect of the present invention, since no pivot pin or the like is used, the mechanical strength of the inner die can be improved and the configuration of the molding device can be simplified. it can. In addition, since the outer periphery of the cup-shaped material is pressed inward in the radial direction by the outer die, a predetermined outer surface shape is formed on the outer periphery of the material, so that the cup-shaped socket member can be easily formed. Become.

[0016]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is an explanatory cross-sectional view of a molding apparatus according to an embodiment of the present invention. A right half of a center line Y is a drawing showing a state in which a cup-shaped material is supported by an outer die, and a left half is an inner die. Is a drawing showing a state in which has moved to a molding position. FIG. 2 is a sectional view taken along line AA in the state shown in the right half of FIG.

In FIG. 1, reference numeral 1 denotes a base, and 2 denotes an outer die base fixed on the base 1. Reference numeral 3 denotes an outer die mounted on the outer die base 2, 4 denotes a cup-shaped material, and the cup-shaped material 4 is supported by the outer die 3 in this embodiment.

A plurality of the outer dies 3 are provided on the outer peripheral side of the cup-shaped material 4 and are arranged in a ring shape (see FIG. 2). The outer die 3 is an outer die base 2
Are mounted so as to be slidable in the radial direction toward the outer peripheral surface of the cup-shaped material 4 via a slide mechanism (not shown), and between the outer die base 2 and the outer die base 2 in detail. Is always urged radially outward by a spring 5 provided between the projection 2a and the projection 2a. Further, the outer die 3 has an inner peripheral side (in detail,
A molding surface 6 for forming a predetermined outer surface shape is formed on the outer peripheral surface of the cup-shaped material 4 (on the inner peripheral side of the plurality of outer dies 3 arranged in a ring).

Further, the outer die 3 does not come into contact with the projection 2a of the outer die base 2 in a state where the outer die 3 is moved to a molding position to be described later.
It has a predetermined interval t.

The cup-shaped material 4 supported by the outer die 3 is such that the outer surface of the bottom 7 of the material 4 near the outer periphery is in contact with the outer die 3 and the outer surface near the center line Y is not in contact with the outer die 3. Supported by Therefore, the cup-shaped material 4 is supported by the outer die 3 in a state where a gap 8 is formed between the flat surface of the bottom 7 of the material 4 and the outer die base 2.

Reference numeral 9 denotes a movable platen. The movable platen 9 is driven and controlled by a driving device (not shown), and can move toward and away from the base 1.

Reference numeral 10 denotes a mandrel fixed to the movable platen 9. The mandrel 10 includes a base 11 fixed to the movable platen 9 and a frusto-conical shaft 12 protruding from the base 11, and the shaft 12 extends toward the base 1. Further, the mandrel 10 is arranged such that the axis (center line) Y of the shaft portion 12 is concentric with the center line Y of the outer die 3.

Reference numeral 13 denotes an inner die base. The inner die base 13 is provided with a plurality of guide pins 14 implanted in the base 11 of the mandrel 10 in the axial direction.
It is mounted so as to be relatively movable in the axial direction with respect to zero and not to be relatively movable in the radial direction. An enlarged diameter flange 15 is formed at the tip of the guide pin 14, and this flange 15 regulates the maximum movement amount of the inner die base 13 toward the base 1. In addition, the inner die base 1
The base 3 is always mounted on the base 1 by a spring 16 provided between the inner die base 13 and the base 11 of the mandrel 10.
Biased to the side.

Reference numeral 17 denotes an inner die.
When a predetermined inner surface shape is formed on the inner peripheral side of the cup-shaped raw material 4, a plurality of are arranged on the inner peripheral side of the cup-shaped raw material 4,
They are arranged in a ring. The base 18 of the inner die 17 is attached to the inner die base 13 via a slide device (not shown) so as to be slidable in the radial direction of the cup-shaped material 4. The maximum amount of the inner die 17 moving outward in the radial direction is regulated by the base 18 contacting the flange 15 of the guide pin 14 implanted in the inner die base 13.

The inner die 17 has a predetermined inner surface shape on the outer peripheral side (specifically, on the outer peripheral side of the plurality of inner dies 17 arranged in a ring) and on the inner peripheral surface of the cup-shaped material 4. Forming surface 19 is formed. Also,
An inclined surface 21 that fits the conical surface 20 of the shaft portion 12 of the mandrel 10 is formed on the inner peripheral side of the inner die 17 (specifically, on the inner peripheral side of the plurality of inner dies 17 arranged in an annular shape). is there.

Reference numeral 22 denotes operating means for moving the outer die 3 to a molding position. The operating means 22 is attached to the mandrel 10 in this embodiment. Specifically, the operating means 22 is provided on the base 11 of the mandrel 10.
And a plurality of them are mounted corresponding to the outer dies 3,
It extends toward the base 1 side. The operation means 2
In the second die 2, an inclined surface 24 is formed to fit the inclined surface 23 formed on the outer peripheral side of the outer die 3 in order to move the outer die 3. Thereby, the operation means 2
2 is capable of moving the outer die 3 to the molding position by coming into contact with the outer die 3 as the mandrel 10 moves the inner die 17 to the molding position.

In such a configuration, the cup-shaped socket member is formed as follows. That is, before forming the cup-shaped socket member, the movable platen 9 is located at a position away from the base 1, and the outer die 3 and the inner die 17 are separated in the axial direction. The outer die 3 is provided with a spring 5
And is located radially outward.

In this state, first, the cup-shaped material 4 is arranged on the inner peripheral side of the outer die 3, and the cup-shaped material 4 is supported by the outer die 3. At this time, the cup-shaped material 4 is supported in a state where the outer surface of the bottom 7 of the material 4 near the outer periphery is in contact with the outer die 3 and the outer surface near the center line Y is not in contact with the outer die 3. Therefore, the cup-shaped raw material 4 is placed on the outer die 3 with a gap 8 formed between the flat surface of the bottom 7 of the raw material 4 and the outer die 3.
Will be supported by

Next, the movable platen 9 is driven and controlled by a driving device (not shown) to move the movable platen 9 toward the base 1, and an inner die mounted on the movable platen 9 via a mandrel 10 and an inner die base 13. 17 faces the inner peripheral side of the cup-shaped material 4 (see the right half of FIG. 1).

At the same time, the operating means 22 provided on the mandrel 10 also moves to the base 1 side.
When the inclined surface 24 of the operating means 22 slides in contact with the inclined surface 23 formed on the outer peripheral side of the outer die 3, the outer die 3 slidably mounted on the outer die base 2 becomes the spring 5 of the spring 5. It will move slightly inward in the radial direction against the force.

Thereafter, when the movable platen 9 is further moved toward the base 1, the inner die 17 reaches the movement start position with its tip contacting the bottom 7 of the cup-shaped material 4, and moves toward the base 1. Abort.

Further, when the movable platen 9 is moved closer to the base 1, the inner die 17 is stopped in the axial direction while its tip is in contact with the bottom 7 of the cup-shaped material 4 and only the mandrel 10 is moved. The spring 16 moves toward the base 1 against the spring force of the spring 16.

When the mandrel 10 moves against the spring force of the spring 16, the mandrel 10 moves with the conical surface 20 of the shaft 12 sliding on the inclined surface 21 of the inner die 17. . As the mandrel 10 moves, the mandrel 10 forms an inner die 17 slidably mounted on the inner die base 13 in the radial direction of the cup-shaped material 4 in a radially outward direction, that is, a forming process. Will be moved to the position.

When the inner die 17 moves to the forming position, the inner die 17 presses the inner peripheral surface of the cup-shaped material 4 to form the molding, and the molding surface formed on the outer peripheral side of the inner die 17 is formed. 19, cup-shaped material 4
A predetermined inner surface shape is formed on the inner peripheral surface of the.

At the same time as the inner die 17 moves to the forming position, the outer die 3 is moved inward in the radial direction by the operating means 22. That is, the operating means 22 moves the outer die 3 to the molding position.

When the outer die 3 is moved to the forming position, the outer die 3 presses the outer peripheral surface of the cup-shaped material 4 to perform molding, and the molding surface formed on the inner peripheral side of the outer die 3 is formed. 6 forms a predetermined outer surface shape on the outer peripheral surface of the cup-shaped material 4. At the same time, the outer die 3 moves the inner peripheral side of the cup-shaped material 4 to the inner die 17.
Is pressed against the molding surface 19, so that a predetermined inner surface shape is formed on the inner peripheral surface of the cup-shaped material 4. As a result, the cup-shaped socket member is formed (see the left half of FIG. 1).

At this time, in a state where the outer die 3 is moved to the molding position, the outer die 3 has a predetermined interval t without contacting the projection 2a of the outer die base 2. That is, the outer die 3 can be moved until a predetermined pressing force is applied to the cup-shaped material 4 without being stopped by a special stopper unlike the conventional example. For this reason, the cup-shaped material 4 is pressed by the outer die 3 until a predetermined pressure is applied. Even if the thickness of the cup-shaped material 4 varies, the cup-shaped material 4 and the inner die 3 cannot be pressed. It is sufficiently pressed between the die 17 and a predetermined inner surface shape is formed.

After the molding is completed, the movable platen 9 is driven and controlled by a driving device (not shown) to be moved away from the base 1. At this time, the mandrel 10 moves in a direction away from the base 1 under the spring force of the spring 16, so that the conical surface 20 of the shaft portion 12 slides on the inclined surface 21 of the inner die 17 and moves. become. by this,
The inner die 17 moves radially inward from the molding position, returns to the movement start position again, and separates from the outer die 3. Further, the outer die 3 is released from the forming position by the spring force of the spring 5 when the operation of moving the outer die 3 to the forming position by the operating means 22 is released.

With the outer die 3 and the inner die 17 separated from each other in the axial direction, the molded cup-shaped socket member is taken out of the inner die 17. by this,
A cup-shaped socket member is obtained.

Here, the outer die 3 is movable until a predetermined pressing force is applied to the cup-shaped material 4. Therefore, when the inner die 17 moves to the molding position and forms a predetermined inner surface shape on the inner peripheral surface of the cup-shaped material 4, the cup-shaped material 4 is given a predetermined shape from the outer peripheral side by the outer die 3. Pressing force is given. by this,
The inner peripheral surface of the cup-shaped material 4 is pressed by the inner die 17 with a predetermined pressing force.
Is surely shaped.

Accordingly, a molding apparatus for a cup-shaped socket member capable of stably obtaining an inner surface shape is obtained.

When the cup-shaped material 4 is formed by the outer die 3 and the inner die 17, the outer surface of the bottom 7 near the center line Y contacts the outer die 3. When the inner die 17 is in contact with the bottom 7 of the cup-shaped material 4, the bottom 7 of the material 4 can be elastically deformed to the outside by being supported by the gap 8 in a state where the material is not pressed. is there. For this reason, when the inner die 17 moves to the molding position, it can be easily moved.
Thereby, a predetermined inner surface shape is stably formed on the inner peripheral surface of the cup-shaped material 4.

Since the inner die 17 is slidably mounted on the inner die base 13 in the radial direction and does not use a pivot pin, the mechanical strength of the inner die 17 can be improved. In addition, the configuration of the molding apparatus can be simplified. In addition, since the outer periphery of the cup-shaped material 4 is pressed inward in the radial direction by the outer die 3, a predetermined outer surface shape is formed on the outer periphery of the material 4. Becomes easier.

Although the embodiment has been described with reference to the drawings, the specific configuration is not limited to this embodiment and can be changed without departing from the spirit of the invention.
Although the embodiment in which the operating means 22 is mounted on the mandrel 10 has been described, the operating means 22 may be mounted at a position other than the above and move the outer die.

[0046]

As described above in detail, according to the present invention, a molding device for a cup-shaped socket member capable of stably obtaining the inner surface shape can be obtained.

[Brief description of the drawings]

FIG. 1 is a cross-sectional explanatory view of a molding apparatus according to an embodiment of the present invention, in which a right half of a center line Y is a drawing showing a state in which a cup-shaped material is supported by an outer die, and a left half is an inner die. It is a figure showing the state where it moved to a position.

FIG. 2 is a cross-sectional view taken along line AA of the state shown in the right half of FIG.

[Explanation of symbols]

 Reference Signs List 2 outer die base 3 outer die 4 cup-shaped material 10 mandrel 13 inner die base 17 inner die 22 operating means

Claims (3)

[Claims] 1. A molding apparatus for molding a cup-shaped socket member from a cup-shaped material, wherein a plurality of cup-shaped materials are arranged on an inner peripheral side of the cup-shaped material, and an outer peripheral side thereof is provided on an inner peripheral surface of the cup-shaped material. An inner die that forms the inner surface shape of the inner die, an inner die base to which the inner die is attached, a mandrel that moves the inner die to a molding position, and a plurality of mandrels are arranged on the outer peripheral side of the cup-shaped material. An outer die in which an inner peripheral side forms a predetermined outer shape on the outer peripheral surface of the cup-shaped material; an outer die base on which the outer die is movably mounted toward the outer peripheral surface of the cup-shaped material; and the outer die Operating means for moving the outer die to a molding position, wherein the outer die is movably mounted toward an outer peripheral surface of the cup-shaped material until a predetermined pressing force is applied to the material. Characterized by being obtained,
Molding device for cup-shaped socket members. 2. The cup-shaped material is supported by an outer die, the outer surface of the bottom of the material near the outer periphery is in contact with the outer die, and the outer surface near the center line is supported without being in contact with the outer die. The apparatus for forming a cup-shaped socket member according to claim 1, wherein: 3. The inner die is slidably mounted on the inner die base in a radial direction of the cup-shaped material, and the outer die is slid on the outer die base in the radial direction of the cup-shaped material. The mandrel is attached to the mandrel, and the mandrel is connected to operating means for moving the inner die to the molding position, contacting the outer die as the mandrel moves to the molding position, and moving the outer die to the molding position. An apparatus for forming a cup-shaped socket member, characterized in that: