JP2859866B2 - Manufacturing method of parts using progressive processing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a joined part utilizing a progressive feeding method. For example, at least a pair of joined parts having holes arranged on one side and burring, embossing or the like on the other side. The present invention relates to a method of manufacturing a part by laminating (overlapping) parts in a mold and then caulking.

[0002]

2. Description of the Related Art Conventionally, as a manufacturing method for connecting a joined part by using a progressive processing method, there is known a composite processing (composite die processing) method shown in FIG. 6 in which this progressive processing method and a caulking method are used in combination. Have been. The outline is shown in FIG. In this example, the holes formed in the sub-strips before and after going straight at the ninth stage position are filled in the projections (... in the seventh stage ...) formed in the substrate portion which is the main strip, and then caulking is performed. Cut the strip and attach it to the main strip. In the following eleventh stage, the substrate portion is bent in a U-shape, and in the thirteenth stage, the bending process is performed on the spring terminal portion as an auxiliary material. A method in which the bridge before and after the main strip is cut off between the fifteenth and sixteenth stages, the middle bridge is cut off in the seventeenth stage, and the two joint parts are discharged to the left and right to complete the processing of the combined processing type. It is.

As a processing method for connecting materials to each other in a progressive processing method, there is a progressive processing method and an apparatus thereof disclosed in JP-A-6-246498. This document discloses an invention in which the rear end of a material is connected to the front end of the next material by moving the head in a two-dimensional direction.

Further, as a method of forming a pair of strip-shaped terminal portions separated from a material by a progressive feeding method, JP-A-5-50458 and JP-A-5-50459.
No. 1 there is an insert molding method for electronic components. This document discloses an invention in which the terminal portion is bent using press working.

[0005]

In the conventional combined machining method shown in FIG. 6, each of the joint parts manufactured by the progressive machining is connected to each other.
Remove from the processing equipment. Then, after being transferred to another device and place, it is joined by a connecting method such as caulking or welding. Therefore, there are problems that complicated work such as at least two steps and transfer are required, that the work is inefficient, and that a new work procedure is required such as joining of coupling parts.

Further, each prior art invention is limited to a partial improvement of a conventional progressive processing such as a movement of a head in a two-dimensional direction or a bending processing of a terminal portion. It does not have a configuration intended for progressive feeding. Therefore, a problem substantially similar to that of the conventional combined machining method shown in FIG. 6 can be considered.

[0007]

SUMMARY OF THE INVENTION The present invention is directed to a construction in which a connecting part of a connecting part is connected and fastened in a progressive processing, and then the part is formed by cutting off. Therefore, it is possible to simplify the processing steps and processing operations, to speed up the processing operations, and to reduce the cost of the connection parts.

[0008] The gist of the invention is that a progressive molding method for continuously molding using a large number of dies is used, and one or several pieces of material are molded through each processing stage of the progressive machining method. In the process of forming at least one pair of connecting parts via the bridge, the bridge of the pair of connecting parts is bent, and at least one of the pair of connecting parts is moved in the connecting direction, After connecting the connecting parts of the pair of connecting parts, fastening the connecting parts by a connecting method such as caulking, riveting, spot welding or the like to form the part, and then separating and processing the part from the bridge. This is a method for manufacturing parts using a progressive feeding method.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Each processing stage of progressive feeding, for example, a side cut drilling stage, a punching stage,
After several stages of stamping of the joining parts, at least one pair of joining parts connected by a bridge is formed. This state is shown in FIG. As shown in FIGS. 3 (a) to 3 (c), the bridge is bent in a stepwise manner, and one of the pair of connecting parts is moved in the feed direction, and The connecting parts of the connecting parts are overlapped. This state is shown in FIG. As shown in FIGS. 3 (c) to 3 (d) and 3 (e), after the joined joints are connected by connecting parts, caulking is performed to fasten the joined parts. Then, the part shown in FIG. 5 is formed by separating and processing the bridge.

The above-described processes, the number of bridges, the number of bridges, the number of processes, the number of steps, steps, procedures, operations, and the like are merely examples. A similar method is used to complete a connected part as shown in FIG. Such a configuration is included in the present invention.

[0011]

Embodiments of the present invention will be described below.

Reference numeral 1 denotes a conventionally known press machine body, and the press machine body 1 is provided with a progressive feed processing device 2. The progressive processing device 2 is provided with a slide 3 and a bed 4, and between the slide 3 and the bed 4, each processing stage 21 to 21 n constituting the progressive processing device 2 is provided. Utilizing the processing stages 21 to 21n, a pair of connecting parts W2 and W3 is formed, and the pair of connecting parts W2 and W3 are fastened to complete the part Y '.
Is molded.

That is, upper and lower molds 211 to 211n and 211 'to 211n' are provided on each of the processing stages 21 to 21n, respectively.
The material W supplied to n · 211 ′ to 211n ′ is subjected to each processing through the elevation of the upper dies 211 to 211n. For example, in FIG. 1, from side to side from the left side to the right side, punching-out processing → punching processing → press punching processing of several stages → press punching processing of at least a pair of connecting parts W2 and W3 connected by bridge W1 → bridge W1. Bending process → joining parts W2 ′, W3 ′ of joining parts W2, W3
Of the connecting part → supply processing of the connecting part X to the holes W2 ″ and W3 ″ for the connecting parts of the connecting parts W2 ′ and W3 ′ → caulking processing of the connecting part X → separation processing of the connected part Y with bridge. As described above, the completed component Y 'is formed through the respective processing stages 21 to 21n. Of course, there is no distinction between a single member and a composite member for the material W. The material W can be of any material and shape. For example, a steel plate, a copper plate, a plastic plate,
In addition, a plate material such as a plate, or another form or material (not shown) may be used. In other words, all of those usable in the progressive processing method are included.

In this example, as shown in FIGS. 3 and 4, the bridge W1 is connected to the connecting parts W2 and W3 by using at least three stages of bending processing and passing through the bridge W1 → bridge W1a → bridge W1b. Are joined together. Of course, the number of times of bending, the configuration such as whether one or the other of the coupling parts W2 and W3 are individually or simultaneously moved, or the direction of the movement, the number of coupling parts W2 and W3, and the like are not limited to the description and the example in the drawings. Also, the number of crimping processes, parts, caulking methods, etc. are free, or a linking method alternative to caulking, for example, other processes such as welding, screwing, pivoting, fitting, etc. are also possible.

The materials and processing stages 21 described in detail above
~ 21n form, or processing procedure, operation and bonding method,
The connection method and the like have described or illustrated a preferred example. Therefore, a technology having the same effect as the technology of the present invention is naturally included in the present invention.

[0016]

According to the present invention, a connecting part is formed by a progressive feeding method, and a connecting part of the connecting part is connected.
This is a method of forming a completed part in one step through a fastening operation. Therefore, there is an effect that simplification of processing steps and processing operations, speeding up of processing operations, and cost reduction of parts can be achieved. In addition, the labor for packing, transporting, or moving the connected parts by the operator can be saved, so that the working time can be saved and the working environment can be improved. Furthermore, there is a feature that the cost of the mold can be reduced, or a part can be formed by composite mold processing utilizing a conventional general-purpose press, and a great effect in practical use can be expected.

[Brief description of the drawings]

FIG. 1 is a partially omitted schematic diagram showing the entire configuration of the present invention.

FIG. 2 is an enlarged schematic cross-sectional view showing an example of a caulking process of the joint component of the present invention.

FIG. 3 is an enlarged schematic plan view showing the movement and swaging of the connection component of the present invention.

4A and 4B are enlarged schematic cross-sectional views showing the state of crimping due to the movement and crimping of the coupling part of FIG. 3, wherein FIG. 4A is a state before movement, FIG. 4B is a state of the first movement, and FIG. ) Indicates the status of the second transfer, (d) indicates the supply status of connected parts,
(E) shows the state of swaging of the connecting part.

FIG. 5 is an enlarged perspective view showing a completed part.

FIG. 6 is a schematic view showing an example of a conventional composite machining method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Press machine main body 2 Progressive processing apparatus 21 Processing stage 21a Processing stage 21h Processing stage 21n Processing stage 211 Upper die 211a Upper die 211h Upper die 211n Upper die 211 'Lower die 211a' Lower die 211h 'Lower die Mold 211n 'Lower mold 3 Slide 4 Bed W Material W1 Bridge W1a Bridge W1b Bridge W2 Connection part W2' Connection part W2 "Hole W3 Connection part W3 'Connection part W3" Hole X Connection part Y Part with bridge Y' Finished part

Claims (2)

(57) [Claims] 1. A progressive molding method for continuously molding using a large number of molds is used to apply one or several bridges to a material molded through each processing stage of the progressive processing method. In the process of forming at least one pair of connecting parts through the step, the bridge of the pair of connecting parts is bent, and at least one of the pair of connecting parts is moved in the connecting direction, and Connecting the connecting parts of the connecting parts of the above, caulking, fastening by a connecting method such as rivet, spot welding or the like to form the part, and then separating and processing the part from the bridge. A method of manufacturing parts using processing methods. 2. The method of manufacturing a part using the progressive feeding method according to claim 1, wherein the connection of the connecting portions is a connecting structure such as joining, overlapping, and adjoining.