JP5448930B2 - Integrated laminate manufacturing method and integrated laminate - Google Patents

Description

  The present invention relates to a method for manufacturing an integrated laminate formed by laminating a plurality of metal plates and joining the metal plates to each other, and an integrated laminate. More specifically, the present invention relates to a method for manufacturing an integrated laminate with improved bonding strength and an integrated laminate.

  Conventionally, it is known to use an integrated laminated body in which a plurality of metal plates are laminated and integrated with each other in a transformer core or the like. When a flat plate material is punched by pressing, the integrated laminated body forms a concave part on the upper laminated surface of the punched metal plate and a convex part on the lower laminated surface. A series of processes in which a part is bitten in the concave part of the upper stacking surface of the metal plate punched in front and the concave part of the upper laminated surface is bitten in the convex part of the lower stacking surface of the metal plate to be punched in the mold. Therefore, manufacturing cost can be reduced.

  In order to use such an integrated laminate as a single component, not only a component in which the wire rod is wound after being integrally laminated like the core of a transformer and the bonding strength between the metal plates is reinforced, In Patent Document 1, a brazing material is attached between the laminated surfaces of each metal plate and heated, and the molten brazing material is cooled between the laminated surfaces, or cooled or heated. Has been proposed in which the metal plates are bonded together via a brazing material, and the bonding strength is higher than that of an integrated laminate in which the metal plates are simply crimped. .

JP2008-98484

  In recent years, driving force transmission parts such as automobiles and motorcycles are strongly demanded to replace conventional cutting parts and sintered parts with an integrated laminate from the viewpoint of reducing manufacturing costs. In particular, an integrated laminate is advantageous for parts having a thin sun width with respect to the thickness. In other words, the sun width that can be manufactured by pressing is about the same as the plate thickness, the sun width that can be manufactured by fine blanking is about one third of the plate thickness, On the other hand, when it is thin, wire cutting and electrical discharge machining are generally required, whereas the integrated laminate can process a sun width of about 1/20 of the thickness. That's why.

  However, since the driving force transmission parts as described above are used in an environment where vibrations and impacts are applied more, the integrated laminate requires a stronger bonding strength between the metal plates against the shearing force and the like. It is said. On the other hand, for example, it is conceivable to reinforce the metal plates of the integrated laminated body by screw fastening or the like, but there is a possibility that the secondary processing to the integrated laminated body increases and the manufacturing cost cannot be met.

  In view of the above circumstances, an object of the present invention is to provide an integrated laminate manufacturing method capable of improving the joint strength of an integrated laminate obtained by integrating a plurality of metal plates via a brazing material while suppressing an increase in manufacturing cost. It is to provide.

  In addition, in view of the above circumstances, an object of the present invention is to provide an integrated laminate in which a plurality of metal plates are integrated via a brazing material, which suppresses an increase in manufacturing cost and improves the bonding strength between metal plates. It is to provide.

  In order to solve the above-mentioned problems, a manufacturing method of an integrated laminate according to the present invention includes a brazing material obtained by heating and melting a laminate in which a plurality of metal plates are laminated and a brazing material provided in the laminate. In a manufacturing method of an integrated laminate in which wet spreading between metal plates is performed and then the laminate is cooled and the metal plates are brazed together to form an integrated laminate, at least two of the metal plates are bonded to each other. At least one hole portion is provided, and a plurality of metal plates are laminated so that the hole portions communicate with each other and the communication hole opens on the surface of the laminate, and an attachment member is inserted into the communication hole. The inserted laminated body is heated together with the brazing material provided in the laminated body and the brazing material melted is added between the metal plates, and further wetted and spread between the metal plate and the attached member. Cool the laminated body inserted with metal plates Is characterized in that integrally brazed together and the metal plate and attached members and.

  Moreover, as for the manufacturing method of the integrated laminated body of this invention, the insertion of an attachment member may protrude and insert a part of this attachment member from a laminated body.

  Moreover, the manufacturing method of the integrated laminated body of this invention WHEREIN: Heating and cooling may use the part which hardened the attachment member and protruded from the laminated body as a function part of an integrated laminated body.

  Here, the “functional part” means a part that exhibits a function. For example, when the integrated laminate is used as a mechanical part, the protruding part is engaged with another part. It means that a power transmission function is exhibited or a connection function is exhibited by fitting with other parts.

  In the method for manufacturing an integrated laminate according to the present invention, the insertion of the attachment member into the communication hole may be press-fitting into the communication hole. Here, “press-fit” is not limited to press-fitting in an intermediate fit specified in JIS, but also includes strong press-fitting or light press-fitting in a clearance fit. It is preferable that the clearance with the attachment member is light press-fitting with a value of about 0 to 0.03 mm.

  Moreover, as for the manufacturing method of the integrated laminated body of this invention, a communicating hole may be a through hole and an attachment member may penetrate a laminated body.

  Moreover, the manufacturing method of the integrated laminated body of this invention may be provided by plating the brazing material on the laminated surface of the metal plate.

  The integrated laminate of the present invention is an integrated laminate obtained by laminating a plurality of metal plates and brazing together the metal plates, and at least two of the plurality of metal plates are at least one. The laminated body has a communication hole that opens to the surface of the laminated body with the hole part communicating therewith, and an attachment member is inserted into the communication hole, and the metal plate is attached to the metal plate in addition to the metal plates. The members are also brazed to each other.

  According to the present invention, a laminated body in which a plurality of metal plates are laminated and a brazing material provided on the laminated body is heated and spread between the metal plates, and then the laminated body is cooled. In the manufacturing method of an integrated laminate in which the metal plates are brazed together and cooled and integrated, at least one hole is provided in at least two metal plates among the plurality of metal plates, and the plurality of metals The plate is laminated so that the holes communicate with each other so that the communication hole is opened on the surface of the laminate, and an attachment member is inserted into the communication hole, and the laminate in which the attachment member is inserted is provided in the laminate. The brazing material heated and melted together with the adhesive material is added between the metal plates, and further wetted and spread between the metal plate and the attachment member. After that, the laminated body in which the attachment member is inserted is cooled and the metal plates and Brazing metal plate and attached member to each other As a result, the metal plates are not only brazed and joined to the metal plates stacked one above the other, but the metal plate with the attached member inserted is also brazed and joined to the attached member. The bonding strength of the laminate can be improved.

  Further, according to the present invention, since the joining strength of the integrated laminate can be improved simply by inserting the attachment member into the communication hole on the surface of the laminate formed by lamination, heating and cooling, many secondary Processing is not required, and an increase in manufacturing cost can be suppressed.

  Further, if a part of the attachment member is protruded from the laminated body and inserted, the protruding portion can be used as a functional part of the integrated laminated body, and the manufacturing cost can be suppressed.

  Further, if the auxiliary member is quenched by heating and cooling, the protruding portion can be used as a functional part having a predetermined hardness, and it is not necessary to mount the quenched parts after being integrated. Manufacturing cost can be reduced.

  Further, if the insertion of the attachment member into the communication hole is press-fitted, the molten brazing material diffuses between the metal plate and the attachment member, and the brazing material, the metal plate material, and Since an alloy layer made of the material of the attachment member is formed, stronger bonding strength can be obtained.

  Further, if the communication hole is a through hole and the attachment member penetrates the laminated body, all the laminated metal plates are brazed to the attachment member, so that a stronger joint strength can be obtained. .

  In addition, if the brazing material is provided by plating the laminated surface of the metal plates, the brazing material can be reliably melted between the metal plates, and unevenness of brazing can be reduced to obtain stronger bonding strength. be able to.

  The integrated laminate of the present invention is an integrated laminate obtained by laminating a plurality of metal plates and brazing together the metal plates, and at least two of the plurality of metal plates are at least one. The laminated body has a communicating hole formed in the laminated body and opened to the surface of the laminated body through the hole portion, and an attachment member is inserted into the communicating hole. In addition to the metal plates, Since the attachment members are also brazed to each other, it is possible to manufacture an integrated laminated body with improved bonding strength as compared with an integrated laminated body obtained by normal brazing at a low manufacturing cost.

Conceptual diagram showing a method for manufacturing an integrated laminate Diagram showing the process of stamping a flat plate material with brazing material into a punching die by press working The figure which shows the process of inserting an attachment member in a laminated body, and the process of brazing AA sectional view of FIG. The figure which shows the process of brazing of 2nd Embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the method of manufacturing the integrated laminate 110 in the embodiment of the present invention, the brazing material W is provided by plating on the laminate surface of a plurality of metal plates H1, H2, H3 (hereinafter collectively referred to as metal plates H). A plurality of the metal plates with brazing material Hw1, Hw2, Hw3... (Hereinafter collectively referred to as the metal plate with brazing material Hw) are laminated to manufacture the laminate 10. The metal plate H is provided with a hole 12 that penetrates the metal plate H, and at the time of this lamination, the hole 12 communicates with each other so that a communication hole 14 that penetrates the laminated body 10 and opens to the surface is formed. Laminate to.

  Next, the attachment member 20 is inserted into the communication hole 14 of the laminate 10, and the laminate 10 in which the attachment member 20 is inserted is heated together with the brazing material W to melt the brazing material W between the metal plates H. Between the metal plate H and the attachment member 20, and then the laminated body 10 in which the attachment member 20 is inserted is cooled to braze the metal plates H and the metal plate H and the attachment member 20 together. The integrated laminated body 110 which is a mechanical component formed by joining the plurality of metal plates H and the attachment member 20 by joining through the material W is obtained.

  As the brazing material W, silver, copper, brass or the like can be used. The metal plate H can be formed by punching a flat plate material 11 made of a metal material such as a copper material, an iron material, and a stainless material with a press die. The metal plate Hw with brazing material can be formed by plating the laminated surface of the metal plate H with a brazing material W, or punching out a flat plate 11w with brazing material on which the brazing material W has been plated in advance by a press die. The attachment member 20 can be created by machining a metal material such as a copper material, an iron material, and a stainless material.

  By plating the brazing material W on the laminated surface of the metal plate H, the brazing material W adheres uniformly to the laminated surface.

  The production of the laminate 10 will be specifically described. As shown in FIG. 2, the laminated body 10 was created by a pressing process in which a flat plate 11 w with brazing material obtained by plating a brazing material W on the flat plate material 11 was punched with a press die to create a metal plate Hw with brazing material. The brazing material-attached metal plates Hw are sequentially laminated in a press mold, and the brazing material-attached metal plates Hw are caulked and joined together to produce the laminate 10. The pressing process and the caulking process are performed using a pressing device 210.

  The pressing process will be described. A flat plate 11w with brazing material is pressed by a press die J1 composed of an upper die Ja1 and a lower die Jb1, and two holes 12 are punched and formed in the flat plate 11w with brazing material. The brazing material-attached flat plate 11w in which the two holes 12 are formed is forwarded to the next process (X direction in the figure).

  Next, the central opening 13 is formed at the center of the two holes 12 of the brazing material-attached flat plate 11w by the press die J2 composed of the upper die Ja2 and the lower die Jb2. The brazing material-attached flat plate 11w in which the central opening 13 is formed is forwarded to the next process (X direction in the figure). It should be noted that a dahoe portion (not shown) is formed around the central opening 13. Here, the dahoe portion is a portion in which a concave portion is formed on the upper surface (+ Z direction in the drawing) and a convex portion is formed on the lower surface (−Z direction in the drawing) of the brazing material-attached metal plate Hw.

  Next, the outer contour of the brazing material-attached flat plate 11w is punched out by the press die J3 including the upper die Ja3 and the lower die Jb3 to form the brazing material-attached metal plate Hw1. Here, the brazing metal plate Hw1 is held while maintaining the posture when punched into the lower die Jb3.

  The caulking process will be described. Through the same pressing process as described above, the brazing metal plate Hw2 punched next to the brazing metal plate Hw1 is laminated on the brazing metal plate Hw1 held in the lower die Jb3. At this time, the hole portion 12 and the central opening 13 communicate with each other, and the brazing material-attached metal plate Hw2 is inserted into a recess of a dahoe portion (not shown) formed on the upper surface (+ Z direction in the drawing) of the brazing material-attached metal plate Hw1. A convex portion of a dahoe portion (not shown) formed on the lower surface (−Z direction in the drawing) is pushed in, and the brazing metal plate Hw1 and the brazing metal plate Hw2 are caulked and joined in the lower die JB3. The

  By repeating the above operation, the laminated body 10 in which the brazing metal plates Hw are sequentially laminated and caulked and joined in the lower mold Jb3 is formed. At this time, on the surface of the laminate 10, the hole portions 12 of all the brazing material-attached metal plates Hw communicate with each other, and communication holes 14 that penetrate the laminate 10 are opened. In addition, the sun width of the laminated body 10 is thin with respect to the thickness as shown in the figure.

  As shown in FIGS. 3 and 4, the integrated laminate 110 is manufactured by a process of inserting the attachment member 20 into the laminate 10 and a brazing process of the laminate 10 in which the attachment member 20 is inserted.

  Here, the upper diagram of FIG. 3 is a top view of the integrated laminate 110, the lower diagram of FIG. 3 is a front view of the integrated laminate 110, and FIG. 4 is a cross-sectional view taken along line AA of FIG.

  The insertion process will be described. In the insertion step, the attachment member 20 is inserted into the communication hole 14 that opens on the surface of the laminate 10. At the time of insertion, the attachment member 20 passes through the laminated body 10 and is inserted so that a part of the attachment member 20 protrudes from the surface of the laminated body 10.

  Further, it is desirable that the attachment member 20 is inserted into the communication hole 14 by press-fitting. By press-fitting, the molten brazing material W diffuses into the metal plate H and the attachment member 20, and the brazing material W, the material of the metal plate H, and the attachment member 20 are interposed between the metal plate H and the attachment member 20. An alloy layer is formed from the material. Here, the press-fitting is not limited to the press-fitting in an intermediate fit that is strictly defined by JIS, and may be a strong press-fitting or a light press-fitting in a clearance fit. It is preferable that the clearance between the attachment member 20 and the attachment member 20 be light press-fitting of about 0 to 0.03 mm.

  Note that the communication hole 14 and the attachment member 20 are not limited to the shaft shape and the hole shape, and may be, for example, a prism and a square hole. Any shape may be used as long as the shape can be inserted into the box.

  Next, the brazing process will be described. The laminate 10 into which the attachment member 20 is press-fitted is heated in an electric furnace. Specifically, when copper is used as a brazing material, heating is performed with the furnace temperature set to about 1120 ° C., which exceeds the melting point of copper, 1083.4 ° C. By the heating, the brazing material W spreads between the metal plates H and between the metal plate H and the attachment member 20.

  After the brazing material W spreads wet, the electric furnace is stopped and the laminated body 10 into which the attachment member 20 is press-fitted is cooled to room temperature. In cooling, it is desirable to blow hydrogen gas in order to obtain a reducing action.

  As the laminated body 10 is cooled, the metal plates H and the metal plate H and the attachment member 20 are brazed and joined to each other by the brazing material W that spreads wet. Thereby, the integrated laminated body 110 formed by integrating the metal plate H and the attachment member 20 is formed.

  Moreover, the part which protruded from the surface of the laminated body 10 of the attachment member 20 is a function part of the integrated laminated body 110 which exhibits the power transmission function by engagement with another component, the connection function by fitting with another function, etc. 120 can be used.

  Further, a member that can be hardened to the attachment member 20, such as carbon steel, is employed, and the attachment member 20 is heated and held at 730 degrees or more, which is a transformation point of steel, by heating at about 1120 degrees in the brazing process. It is possible to rapidly cool to 550 degrees or less at once, quench by cooling to 250 degrees, and use the portion protruding from the surface of the laminated body 10 of the attachment member 20 as the functional part 120 having a predetermined hardness. it can.

  Here, in the manufacturing method of the integrated laminated body 110 described above, the attachment member 20 is described as being inserted so as to penetrate the laminated body 10, but is not particularly limited. When it is desired to improve the joint strength of a part of the integrated laminate 110 with respect to a partially applied shear force, the attachment member 20 is inserted up to a portion where the joint strength of the laminate 10 is desired to be improved. There may be.

  Further, it is not necessary to provide the holes 12 in all the brazing material-attached metal plates Hw. The press die J1 may be attached to another press device other than the brace device 21, the hole 12 may be provided only in a part of the metal plate Hw with brazing material, and the communication hole 14 may have a bottom. Thereby, the joint strength of only a part of the integrated laminate 110 can be improved.

  Further, the attachment member 20 does not necessarily have to protrude from the surface of the laminate 10. When the functional unit 120 is not required to be provided in the integrated laminate 110, the attachment member 20 is joined to the integrated laminate 110. You may utilize only as a member which improves an intensity | strength.

  Moreover, the manufacturing method of said integrated laminated body 110 is not limited to manufacturing a mechanical component, It can apply also when manufacturing any components.

  Next, a second embodiment of the method for manufacturing the integrated laminate 110 will be described. In the second embodiment, only the method of providing the brazing material W on the metal plate H in the brazing step is different from that of the first embodiment, and the other steps are the same as those of the first embodiment. Therefore, only the brazing process will be described, and description of other processes will be omitted.

  FIG. 4 is a diagram illustrating a brazing process according to the second embodiment. An upper view of FIG. 4 is a top view of the laminated body 10 to be brazed, and a lower view is an AA cross-sectional view of the top view. In the second embodiment, the metal plate H is laminated without using the brazing material-attached metal Hw. At the time of lamination, a brazing material hole 15 with the metal plate H1 as the bottom is formed as shown in FIG. In the second embodiment, the brazing material W is provided on the laminate 10 by inserting the core-shaped brazing material W into the brazing material hole 15. The brazing material hole 15 may be formed by using a press die for punching the brazing material hole 15. In order to make the metal plate H 1 the bottom of the brazing material hole 15, the above-described communication hole 14 is provided with a bottom. Since the same method may be used, detailed description is omitted.

  In the second embodiment, the core-shaped brazing material W is dissolved by heating and cooling the laminated body 10 in which the brazing material W is inserted into the brazing material hole 15 in the same manner as in the first embodiment. The metal plate H and the metal plate H and the attachment member are spread between the metal plates H and between the metal plate H and the attachment member 20 by the brazing material W that spreads wet as the laminate 10 is cooled. 20 are brazed to each other. Thereby, the integrated laminated body 110 formed by integrating the metal plate H and the attachment member 20 is formed. The method of providing the core-shaped brazing material W in the laminate 10 is not limited to the brazing material hole 15, and a communication groove is provided on the side surface of the laminate 10 so that the communication groove faces upward. The laminated body 10 may be held in a posture, and the core-shaped brazing material W may be provided on the communication groove.

  As described above, according to the method for manufacturing the integrated laminate 110 according to the embodiment of the present invention, the hole 12 is provided in at least two of the metal plates Hw with brazing material among the plurality of metal plates with brazing material Hw. A plurality of brazing material-attached metal plates Hw are laminated so that the hole portions 12 communicate with each other so that the communication holes 14 are opened on the surface of the laminate 10, and the attachment member 20 is inserted into the communication holes 14. The laminate 10 in which the member 20 is inserted is heated together with the brazing material W and the molten brazing material W is added between the metal plates H, and is further wetted and spread between the metal plate H and the attachment member 20. Since the laminated body 10 in which the attachment member 20 is inserted is cooled and the metal plates H and the metal plate H and the attachment member 20 are brazed to each other, the metal plates are laminated in the vertical direction. Not only is it brazed to H but also gold Plate H is to be brazed to attached member 20, it is possible to improve the bonding strength of the integrated laminated body 110.

  In addition, in order to improve the bonding strength, the integrated laminated body 110 simply needs to insert the attachment member 20 into the communication hole 14 on the surface of the laminated body 10 and heat and cool it. Therefore, an increase in manufacturing cost can be suppressed.

  Further, as long as a part of the attachment member 20 protrudes from the laminated body 10 and is inserted, the protruding part can be used as the functional unit 120 of the integrated laminated body 110, and the manufacturing cost can be reduced. .

  Further, if the attachment member 20 is quenched by heating and cooling, the protruding portion can be used as the functional unit 120 having a predetermined hardness, and there is no need to mount the quenched component after being integrated. Further, the manufacturing cost can be reduced.

  If the insertion of the attachment member 20 into the communication hole 14 is press-fitted, the molten brazing material W diffuses into the metal plate H and the attachment member 20 and brazes between the metal plate H and the attachment member 20. Since an alloy layer is formed by the material W, the material of the metal plate H, and the material of the attachment member 20, stronger bonding strength can be obtained.

  Further, if the communication hole 14 is a through hole and the attachment member 20 penetrates the laminated body 10, all the laminated metal plates H are brazed to the attachment member 20. Can be obtained.

  Further, if the brazing material W is provided by being plated on the laminated surface of the metal plate H, the brazing material W can be reliably melted between the metal plates H, and unevenness of brazing is reduced. A stronger bonding strength can be obtained.

  In an integrated laminated body 110 that is an embodiment of the mechanical component of the present invention, the metal plate H has a hole portion 12, and the hole portion 12 communicates with the laminated body 10 and opens to the surface of the laminated body 10. The communication hole 14 is formed, and the attachment member 20 is inserted into the communication hole 14, and the metal plate H and the attachment member 20 are brazed to each other in addition to the metal plates H, so that integration by normal brazing is performed. An integrated laminate having improved bonding strength than the laminate can be produced at a reduced manufacturing cost.

H Metal plate Hw Metal plate with brazing material W Brazing material 10 Laminated body 12 Hole part 14 Communication hole 20 Attached member 110 Integrated laminated body 120 Functional part

Claims (7)

The laminated body in which a plurality of metal plates are laminated and the brazing material provided in the laminated body are heated and melted to spread the brazing material between the metal plates, and then the laminated body is cooled and the In the manufacturing method of an integrated laminate in which metal plates are brazed together and integrated,
At least one hole is provided in at least two metal plates among the plurality of metal plates,
Laminating the plurality of metal plates such that the hole portion communicates and the surface of the laminate is open to the communication hole,
Insert an attachment member into the communication hole,
The brazing material, which is heated and melted together with the brazing material provided in the laminated body, is added between the metal plates, and the metal plate and the additional member are further added. Spread even wet,
Then, the said laminated body in which this attachment member was inserted is cooled, and the said metal plates and this metal plate and the said attachment member are brazed together, and the manufacturing method of the integrated laminated body characterized by the above-mentioned.   The method for producing an integrated laminate according to claim 1, wherein the attachment member is inserted by inserting a part of the attachment member from the laminate.   3. The method for manufacturing an integrated laminate according to claim 2, wherein the heating and the cooling are performed by quenching the auxiliary member and using a portion protruding from the laminate as a functional part of the integrated laminate.   The method for producing an integrated laminate according to any one of claims 1 to 3, wherein the attachment member is inserted into the communication hole by press-fitting into the communication hole.   The method for producing an integrated laminate according to any one of claims 1 to 4, wherein the communication hole is a through hole, and the attachment member penetrates the laminate.   The said brazing material is plated and provided on the lamination surface of the said metal plate, The manufacturing method of the integrated laminated body of any one of Claims 1-5 characterized by the above-mentioned. An integrated laminate in which a plurality of metal plates are laminated and the metal plates are integrated by brazing,
At least two of the plurality of metal plates have at least one hole,
The laminated body is formed with a communicating hole that opens to the surface of the laminated body through the hole portion, and an attachment member is inserted into the communicating hole,
In addition to the metal plates, the metal plate and the attachment member are also brazed to each other.

Images