JP2020146736A - Press mold, press mold set, press working machine, and method of manufacturing mold coupling body - Google Patents

Abstract

To provide a press mold for coupling members different in quality of material in a hardly coming-off manner and in a shorter period of time by pressing, a press mold set, a press working machine, and a method of manufacturing a mold coupling body.SOLUTION: A press mold 5 comprises first and second body parts 11 and 12 that are made of a material harder than a workpiece W capable of being plastically deformed and that are connected together in a direction of a center axis C1 in such a manner as to share the center axis C1. The press mold is formed so that an outside diameter of the first body part 11 can be set shorter than that of the second body part 12. A first groove part 13 is arranged on a surface of a region of the first body part 11 connected to the second body part 12. The press mold is pressed against the workpiece W from the side of the first body part 11.SELECTED DRAWING: Figure 1

Description

The present invention relates to a press die, a press die set, a press working machine, and a method for manufacturing a die combination.

Welding, adhesion, and the like have been conventionally known as a method of manufacturing a bonded body by connecting a bonded member made of a material different from this to the bonded member.

However, members made of materials unsuitable for welding cannot be connected by welding. Further, depending on the material of the member, the adhesive strength of the adhesive may be insufficient. Furthermore, since the materials are different from each other, it is necessary to change the welding conditions and the type of adhesive between the members. Moreover, welding equipment and bonding equipment are required.

On the other hand, there is known a method of fastening both by utilizing the plastic flow of the fastening member by pressing a joint made of a material harder than the member to be fastened (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2012-184842

However, it is necessary to provide holes for joining tools in both of the members to be fastened, and in order to connect a large number of joining tools to a member having a particularly large area, drilling or the position of the holes and the joining tool are used. It takes time to align.

The present invention has been made in view of the above circumstances, and a press die, a press die set, a press processing machine, and a die for joining members made of different materials to each other in a shorter time and with less detachment by pressing. It is an object of the present invention to provide a method for producing a mold conjugate.

The present invention employs the following means in order to solve the above problems.
The press die according to the present invention is made of a material harder than the plastically deformable work material, and includes a first main body portion and a second main body portion that share a central axis and are connected in the direction of the central axis. The maximum width of the cross section orthogonal to the central axis of the first main body is formed shorter than the maximum width of the cross section orthogonal to the central axis of the second main body, and the second main body of the first main body is formed. A first groove portion is arranged on the surface of the connection portion with and is pressed against the work material from the first main body portion side.

Further, the press die according to the present invention further shares the central axis with the first main body and the second main body, and is connected to the second main body in the direction of the central axis. The maximum width of the cross section of the third main body portion orthogonal to the central axis is formed longer than the maximum width of the cross section orthogonal to the central axis of the second main body portion. A second groove is arranged on the surface of the connection portion with the third main body.

Further, the press die set according to the present invention includes a first mold and a second mold that support the work material from opposite directions with a plastically deformable work material sandwiched between them, and a press according to the present invention. An insertion portion provided with a die and a pressing die for pressing the pressing die, and the pressing die and the pressing die can be inserted into the first mold or the second mold in the central axis direction. Is arranged, and the first main body portion of the press die inserted into the insertion portion is brought into contact with the work material and further pressed by the pressing die to expand or withdraw the work material. A housing unit for accommodating a part of the above is arranged in the second type or the first type.

Further, the press working machine according to the present invention is formed so that the press die set according to the present invention can be arranged.

Further, the method for manufacturing a die joint according to the present invention is a method for manufacturing a mold joint composed of a plastically deformable work material and a press mold according to the present invention, and is a plastically deformable work piece. A support process in which the work material is supported by the first and second molds that support the work material from opposite directions with the work material sandwiched between them, and the press die is directed toward the work material. The present invention includes a pressing step of bonding the press die to the work material while plastically deforming the work material by pressing.

According to the present invention, members made of different materials can be joined by pressing in a shorter time and with less disengagement.

It is a partial cross-sectional view which shows the press die set and the press die which concerns on 1st Embodiment of this invention. It is a partial cross-sectional view which shows the mold joint which concerns on 1st Embodiment of this invention. It is a figure which shows the manufacturing method of the mold conjugate which concerns on 1st Embodiment of this invention. It is explanatory drawing which shows the manufacturing process of the mold conjugate which concerns on 1st Embodiment of this invention. It is explanatory drawing which shows the manufacturing process of the mold conjugate which concerns on 1st Embodiment of this invention. It is explanatory drawing which shows the manufacturing process of the mold conjugate which concerns on 1st Embodiment of this invention. It is explanatory drawing which shows the manufacturing process of the mold conjugate which concerns on 1st Embodiment of this invention. It is a partial cross-sectional view which shows the press die set and the press die which concerns on 2nd Embodiment of this invention. It is a partial cross-sectional view which shows the mold joint which concerns on 2nd Embodiment of this invention. It is a figure which shows the manufacturing method of the mold conjugate which concerns on 2nd Embodiment of this invention. It is explanatory drawing which shows the manufacturing process of the mold conjugate which concerns on 2nd Embodiment of this invention. It is explanatory drawing which shows the manufacturing process of the mold conjugate which concerns on 2nd Embodiment of this invention. It is explanatory drawing which shows the manufacturing process of the mold conjugate which concerns on 2nd Embodiment of this invention. It is explanatory drawing which shows the manufacturing process of the mold conjugate which concerns on 2nd Embodiment of this invention.

(First Embodiment)
The first embodiment according to the present invention will be described with reference to FIGS. 1 to 7.
As shown in FIG. 1, the press die set 1 according to the present invention has an upper die (first die) 2 that supports the workpiece W from above and below with a plastically deformable workpiece W sandwiched between them. A lower die (second die) 3, a pressing die 5, and a pressing die 6 are provided. This press die set 1 is used together with a press working machine 7 on which it can be placed.

The upper die 2 is provided with an insertion hole (insertion portion) 8 through which the press die 5 can be inserted in the central axis C1 direction. The lower die 3 has an accommodating portion for accommodating a part of the workpiece W that is expanded or withdrawn when the press die 5 inserted into the insertion hole 8 is pressed against the workpiece W by the pressing die 6. 10 are arranged.

The insertion hole 8 may be arranged in the lower mold, and the accommodating portion 10 may be arranged in the upper mold. Further, it is not always necessary to support the work material W from the vertical direction, and it does not have to be in the vertical direction as long as the dies are arranged so as to support them from opposite directions.

The press die 5 is made of a material harder than that in the work piece W, and includes a first main body portion 11 and a second main body portion 12 that share the central axis C1.

The first main body portion 11 and the second main body portion 12 are formed in a substantially columnar shape and are connected to each other in the central axis C1 direction. The outer diameter of the first main body portion 11 is formed shorter than the outer diameter of the second main body portion 12, and is formed to be substantially the same as the inner diameter of the accommodating portion 10. The outer diameter of the second main body portion 12 is such that the second main body portion 12 can be inserted into the insertion hole 8 of the upper die 2 along the central axis C1. A first groove portion 13 is arranged in the circumferential direction on the surface of the connection portion of the first main body portion 11 with the second main body portion 12.

The work material W is formed in, for example, a plate shape, and is made of, for example, an aluminum alloy. The press die 5 is made of, for example, stainless steel, and the length in the central axis C1 direction is substantially the same as the plate thickness of the work material W.

The first main body 11 and the second main body 12 do not have to be substantially cylindrical, and the central axis C1 is shared and the maximum width of the cross section orthogonal to the central axis C1 of the first main body is the second. It may be formed shorter than the maximum width of the cross section orthogonal to the central axis C1 of the main body. Further, the first groove portion may be formed in a notched shape or the like by reducing the diameter of a part of the first main body portion 11. Further, the length of the press die 5 in the central axis C1 direction does not have to be substantially the same as the plate thickness of the work piece W.

The pressing mold 6 is formed in a substantially columnar shape, and is connected to a pressing mechanism (not shown) included in the press working machine 7. The outer diameter of the pressing die 6 is such that the pressing die 6 can be inserted into the insertion hole 8 of the upper die 2 along the central axis C1. The press working machine 7 is formed so that the press die set 1 can be arranged.

Next, regarding the action and effect of the press die set 1, the press die 5, and the press processing machine 7 according to the present embodiment, the production of the die combine 15 composed of the work material W and the press die 5 The method will be described with reference to FIGS. 2 to 6.

As shown in FIG. 2, the die joint 15 is composed of a work material W and a press die 5. As shown in FIG. 3, the method for manufacturing the mold coupling 15 includes a support step (S01), an installation step (S02), and a pressing step (S03).
First, in the support step (S01), as shown in FIG. 4, the upper die 2 and the lower die 3 sandwich the work piece W in between and support it from above and below. Then, in the installation step (S02), as shown in FIG. 5, the press die 5 is inserted into the insertion hole 8. At this time, the pressing die 5 is inserted so that the first main body 11 side is in contact with the work piece W.

In the pressing step (S03), the pressing die 6 presses the pressing die 5 in the direction of the central axis C1. Here, the work material W is made of an aluminum alloy, and the press die 5 is made of stainless steel. Therefore, when the first main body 11 abuts on the work piece W and then is further pressed, the work piece W is plastically deformed and the contact portion with the press die 5 is dented as shown in FIG. .. On the other hand, the side opposite to the central axis C1 direction of the work material W expands.

Then, even after the lower end of the second main body 12 comes into contact with the surface of the work piece W, the pressing die 5 is further pressed, so that the first main body 11 and the second main body 12 are pressed and plastic. A part of the deformed work material W is plastically flowed into the first groove portion 13, and as shown in FIG. 7, the second main body portion 12 is embedded in the work material W. In this way, the mold conjugate 15 is manufactured.

According to the manufacturing method of the press die set 1, the press die 5, the press processing machine 7, and the die joint 15, the work material W is plastically deformed to be made of a material different from the work material W. When connecting dissimilar materials, it is not necessary to provide holes or holes for guiding dissimilar materials in the work material, and both can be joined. As a result, it is not necessary to align the holes or align the holes of the work material, the manufacturing cost can be reduced, and the mold joint 15 can be manufactured.

(Second Embodiment)
Next, the second embodiment will be described with reference to FIGS. 8 to 14.
The same components as those in the first embodiment described above are designated by the same reference numerals, and the description thereof will be omitted.
The difference between the second embodiment and the first embodiment is that, as shown in FIG. 8, the press die 20 according to the present embodiment has the central axis C1 as the first main body 11 and the second main body 12. The point is that the third main body 21 shared with the user is further provided.

The third main body portion 21 is formed in a substantially columnar shape and is connected to the second main body portion 12 in the central axis C1 direction. The outer diameter of the third main body portion 21 is formed to be longer than the outer diameter of the second main body portion 12. The second groove portion 22 is arranged in the circumferential direction on the surface of the connection portion of the second main body portion 12 with the third main body portion 21.

The press die set 23 includes the press die 20, an upper die 2, a lower die 3, and a pressing die 6.

As shown in FIG. 9, the die binder 25 includes a first work material W1 having a through hole H through which the press die 20 can be inserted and a second work material W2 having no holes or the like. , Equipped with. Both the first work material W1 and the second work material W2 are formed in a plate shape, and are made of, for example, an aluminum alloy.

The press die 20 is made of, for example, stainless steel, and the length of the press die 20 in the central axis C1 direction is the plate thickness when the first work material W1 and the second work material W2 are stacked. It is almost the same. However, the inner diameter of the through hole H is formed so that the second main body portion 12 can be inserted and the inner diameter is smaller than the outer diameter of the third main body portion 21. Further, when the tip of the second main body 12 comes into contact with the second work piece W2, the tip of the third main body 21 is formed to have a length of contact with the first work piece W1.

The third main body 21 does not have to be substantially cylindrical, and the maximum width of the cross section orthogonal to the central axis C1 of the third main body is larger than the maximum width of the cross section orthogonal to the central axis C1 of the second main body. It suffices if it is formed short. Further, the second groove portion may be formed in a notched shape or the like by reducing the diameter of a part of the second main body portion 12. Further, the length of the press die 20 in the central axis C1 direction does not have to be substantially the same as the plate thickness when the first work material W1 and the second work material W2 are stacked. The length may be such that the second main body 12 can press the second work piece W2 when the third main body 21 comes into contact with the first work piece W1.

Next, regarding the action and effect of the press die set 23, the press die 20, and the press processing machine 7 according to the present embodiment, the first workpiece W1 and the second workpiece W2 and the press die 20 It will be described together with the manufacturing method of the mold conjugate 25 made of.

As shown in FIG. 10, the method for manufacturing the mold binder 25 includes a support step (S11), an installation step (S12), and a pressing step (S13), as in the first embodiment.

First, in the support step (S11), as shown in FIG. 11, the first work material W1 and the second work material W2 are sandwiched between the upper mold 2 and the lower mold 3 in a state of being overlapped and supported from the vertical direction. To do. At this time, the central axis C1 of the insertion hole 8 of the upper die 2 and the through hole H of the first work piece W1 is aligned. Then, in the installation step (S02), as shown in FIG. 12, the press die 20 is inserted into the insertion hole 8 until the first main body 11 of the press die 20 comes into contact with the second work piece W2. ..

In the pressing step (S13), the pressing die 20 is pressed toward the second work piece W2 by the pressing die 6 in the insertion hole 8. Here, the first work material W1 and the second work material W2 are made of an aluminum alloy, and the press die 20 is made of stainless steel. Therefore, as shown in FIG. 13, the first main body portion 11 is plastically deformed and the contact portion is dented by continuing to press even after the first main body portion 11 is in contact with the second work material W2. , The opposite side of the first work piece W1 expands.

By further pressing, a part of the second work piece W2, which is pressed by the second main body 12 and plastically deformed, plastically flows into the first groove 13, and is pressed by the third main body 21 to be plastic. A part of the deformed first workpiece W1 plastically flows into the second groove 22. In this way, as shown in FIG. 14, the third main body 21 is immersed in the first work piece W1 and a part of the second work piece W2 is separated to manufacture the mold binder 25.

According to the manufacturing method of the press die set 23, the press die 20, the press processing machine 7, and the die combine 25, even if a plurality of workpieces are stacked, the surface is surfaced on the pressing die 6. A plurality of work materials can be bonded by the pressing die 20 only by providing holes or holes only in the work material to be processed, and the mold joint 25 can be manufactured.

The technical scope of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.
For example, the work materials W, W1 and W2 are made of aluminum alloy, and the press dies 5 and 20 are made of stainless steel, but the work material is not limited to these, and the work material may be plastically deformable by pressing with the press die. It doesn't matter.

Further, in the method for manufacturing the die combination, it is said that the installation process includes the installation process of inserting the pressing dies 5 and 20 into the insertion holes 8 of the upper die 2, but the pressing die 5 is provided in the pressing process. , 20 may be inserted into the insertion holes 8 with the pressing dies 5 and 20 and the pressing dies 6 in a state where the dies and 20 are previously connected to the tips of the pressing dies 6.

1,23 Press die set 2 Upper die (first die)
3 Lower type (second type)
5,20 Press dies 6 Press dies 7 Press machine 8 Insert holes (insertion part)
10 Accommodating part 11 First main body part 12 Second main body part 13 First groove part 15, 25 Mold coupling 21 Third main body part 22 Second groove part C1 Central axis W Work material W1 First work material W2 Second work Processed material

Claims (5)

Made of a material that is harder than the work material that can be plastically deformed
It has a first main body and a second main body that share the central axis and are connected in the direction of the central axis.
The maximum width of the cross section of the first main body portion orthogonal to the central axis is formed shorter than the maximum width of the cross section orthogonal to the central axis of the second main body portion.
A first groove portion is arranged on the surface of the connection portion of the first main body portion with the second main body portion.
A press die pressed against the work material from the first main body side. A third main body portion that shares the central axis with the first main body portion and the second main body portion and is connected to the second main body portion in the central axis direction is provided.
The maximum width of the cross section of the third main body portion orthogonal to the central axis is formed longer than the maximum width of the cross section orthogonal to the central axis of the second main body portion.
The press die according to claim 1, wherein the second groove portion is arranged on the surface of the connection portion of the second main body portion with the third main body portion. The first and second molds that support the work material from opposite directions with a plastically deformable work material in between, and
The press die according to claim 1 or 2,
A pressing die that presses the pressing die and
With
An insertion portion through which the pressing die and the pressing die can be inserted in the central axis direction is arranged in the first mold or the second mold.
A part of the work material expanded or extracted by the first main body portion of the press die inserted into the insertion part being brought into contact with the work material and further pressed by the pressing die. A press die set in which the accommodating portion is arranged in the second mold or the first mold. A press working machine in which the press die set according to claim 3 can be arranged. A method for producing a die joint comprising a plastically deformable work material and a press die according to claim 1 or 2.
A support step of supporting the work material by the first mold and the second mold that support the work material from opposite directions with a plastically deformable work material sandwiched between them.
A pressing step of pressing the press die toward the work material to plastically deform the work material and joining the press die to the work material.
A method for manufacturing a mold conjugate comprising.

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