JP2014166729A - Method of joining metal member with resin member - Google Patents

Method of joining metal member with resin member Download PDF

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Publication number
JP2014166729A
JP2014166729A JP2013039906A JP2013039906A JP2014166729A JP 2014166729 A JP2014166729 A JP 2014166729A JP 2013039906 A JP2013039906 A JP 2013039906A JP 2013039906 A JP2013039906 A JP 2013039906A JP 2014166729 A JP2014166729 A JP 2014166729A
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metal member
resin member
rotary tool
resin
metal
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JP6022970B2 (en
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Koji Mukumoto
厚司 椋本
Ei Yoshino
鋭 吉野
Takahiko Nakamura
鷹彦 中村
Keisuke Yoshikawa
佳佑 吉川
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Daihatsu Motor Co Ltd
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Daihatsu Motor Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/74—Joining plastics material to non-plastics material
    • B29C66/742—Joining plastics material to non-plastics material to metals or their alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/06—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using friction, e.g. spin welding
    • B29C65/0681—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using friction, e.g. spin welding created by a tool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/022—Mechanical pre-treatments, e.g. reshaping
    • B29C66/0224—Mechanical pre-treatments, e.g. reshaping with removal of material
    • B29C66/02241—Cutting, e.g. by using waterjets, or sawing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/022—Mechanical pre-treatments, e.g. reshaping
    • B29C66/0224—Mechanical pre-treatments, e.g. reshaping with removal of material
    • B29C66/02245—Abrading, e.g. grinding, sanding, sandblasting or scraping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/21—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being formed by a single dot or dash or by several dots or dashes, i.e. spot joining or spot welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/303—Particular design of joint configurations the joint involving an anchoring effect
    • B29C66/3032—Particular design of joint configurations the joint involving an anchoring effect making use of protrusions or cavities belonging to at least one of the parts to be joined
    • B29C66/30321—Particular design of joint configurations the joint involving an anchoring effect making use of protrusions or cavities belonging to at least one of the parts to be joined making use of protrusions belonging to at least one of the parts to be joined
    • B29C66/30322—Particular design of joint configurations the joint involving an anchoring effect making use of protrusions or cavities belonging to at least one of the parts to be joined making use of protrusions belonging to at least one of the parts to be joined in the form of rugosity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81433—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined being toothed, i.e. comprising several teeth or pins, or being patterned
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a method of joining a metal member with a resin member which enables appropriate joining of a metal member with a resin member while rationalizing the operation process and improving energy efficiency.SOLUTION: A method of joining a metal member with a resin member includes the steps of: generating friction heat by pressing a rotary tool 1 onto a resin member 5, while rotating the rotary tool 1, in a state where the metal member 4 and the resin member 5 are superimposed together, and causing the rotary tool 1 to progress to the side of the metal member 4, while melting the resin member 5; forming a concavoconvex surface part 40 on one side of the metal member 4 by using a processing tool 2 for metal provided additionally in the rotary tool 1, after the rotary tool 1 penetrates the resin member 5 and reaches the side surface of the metal member 4; and drawing the rotary tool 1 from the resin member 5 after the formation of the concavoconvex surface part 40, causing the molten resin to flow onto the concavoconvex surface part 40 and solidifying.

Description

本発明は、金属部材と樹脂部材とを接合する方法に関する。   The present invention relates to a method for joining a metal member and a resin member.

金属部材と樹脂部材との接合方法の具体例として、特許文献１，２に記載の方法がある。
これらの文献に記載された方法においては、金属部材と樹脂部材とを重ね合わせた状態において、回転ツールを回転させながら金属部材の表面に押し付けることにより摩擦熱を発生させる。その際、前記摩擦熱により、樹脂部材のうち、金属部材に対面接触する部分を溶融させる。このため、金属部材に対して樹脂部材を融着させた態様で接合させることができる。このような構成によれば、接着剤を用いて接合させる場合と比較すると、作業性がよい。
また、特許文献１には、前記した接合を行なう前の予備作業として、金属部材の表面にたとえばエッチング処理を施し、金属部材の表面を凹凸状に形成する手段も記載されている。このような手段によれば、金属部材と樹脂部材との接合強度を高めることが可能である。 As specific examples of the method for joining the metal member and the resin member, there are methods described in Patent Documents 1 and 2.
In the methods described in these documents, frictional heat is generated by pressing the rotating tool against the surface of the metal member while the metal member and the resin member are overlapped. At that time, the portion of the resin member that contacts the metal member is melted by the frictional heat. For this reason, it can join in the aspect which fuse | melted the resin member with respect to the metal member. According to such a structure, workability | operativity is good compared with the case where it joins using an adhesive agent.
Further, Patent Document 1 also describes means for performing, for example, an etching process on the surface of the metal member to form the surface of the metal member in a concavo-convex shape as a preliminary work before performing the above-described joining. According to such means, it is possible to increase the bonding strength between the metal member and the resin member.

しかしながら、前記従来技術においては、次に述べるように、未だ改善すべき余地がある。
第１に、摩擦熱を利用して加熱溶融させる対象は、樹脂部材であるが、従来では、回転ツールを金属部材に押し当てて摩擦熱を発生させている。このため、金属部材からの放熱量は多い。金属部材は熱導伝性がよいために、金属部材の略全体が放熱部となり、摩擦熱の放熱ロスはかなり多いものとなる。したがって、樹脂部材に有効に伝達する熱量の割合は少なく、樹脂部材の加熱効率、および作業全体のエネルギ効率は、余り良好ではない。
第２に、金属部材と樹脂部材との接合強度を高めることを目的として、金属部材の表面を予め凹凸状に形成する場合、この作業は、金属部材と樹脂部材との接合作業とは全く別の作業として行なう必要がある。このため、その作業は煩雑である。したがって、生産性を高め、かつ作業コストを低減する観点からも未だ改善の余地がある。 However, there is still room for improvement in the prior art as described below.
First, the object to be heated and melted using frictional heat is a resin member, but conventionally, a rotary tool is pressed against a metal member to generate frictional heat. For this reason, the amount of heat released from the metal member is large. Since the metal member has good thermal conductivity, almost the whole metal member becomes a heat radiating portion, and the heat loss of frictional heat is considerably large. Therefore, the ratio of the amount of heat effectively transmitted to the resin member is small, and the heating efficiency of the resin member and the energy efficiency of the entire work are not so good.
Second, when the surface of the metal member is formed in an uneven shape for the purpose of increasing the bonding strength between the metal member and the resin member, this operation is completely different from the operation of bonding the metal member and the resin member. It is necessary to carry out as work. For this reason, the work is complicated. Therefore, there is still room for improvement from the viewpoint of increasing productivity and reducing work costs.

特開２０１０−１５８８８５号公報JP 2010-158885 A 特開２０１２−１７０９７５号公報JP 2012-170975 A

本発明は、前記したような事情のもとで考え出されたものであり、作業工程の合理化やエネルギ効率の向上を図りつつ、金属部材と樹脂部材との接合を適切に行なうことが可能な金属部材と樹脂部材との接合方法を提供することを、その課題としている。   The present invention has been conceived under the circumstances as described above, and it is possible to appropriately join a metal member and a resin member while rationalizing work processes and improving energy efficiency. An object is to provide a method for joining a metal member and a resin member.

上記の課題を解決するため、本発明では、次の技術的手段を講じている。   In order to solve the above problems, the present invention takes the following technical means.

本発明により提供される金属部材と樹脂部材との接合方法は、金属部材および樹脂部材を重ね合わせた状態において、前記樹脂部材に対して回転ツールを回転させながら押し付けることにより摩擦熱を発生させ、前記樹脂部材を溶融させながら前記回転ツールを前記金属部材側に進行させていく工程と、前記回転ツールが前記樹脂部材を貫通して前記金属
部材の片面に到達した後に、前記回転ツールの先端部に設けられている刃部、または前記回転ツールに付属して設けられた金属用加工ツールを利用して、前記金属部材の片面に凹凸面部を形成する工程と、前記凹凸面部を形成した後に前記回転ツールを前記樹脂部材から引き抜き、溶融樹脂を前記凹凸面部上に流動させてから固化させる工程と、を有していることを特徴としている。 The joining method of the metal member and the resin member provided by the present invention is a state where the metal member and the resin member are overlapped, and generates frictional heat by pressing the rotating tool against the resin member while rotating it, A step of advancing the rotary tool toward the metal member while melting the resin member, and a tip of the rotary tool after the rotary tool penetrates the resin member and reaches one side of the metal member. A step of forming a concavo-convex surface portion on one side of the metal member using a blade provided in the metal or a metal processing tool provided with the rotary tool, and after forming the concavo-convex surface portion, And a step of drawing the rotating tool from the resin member and allowing the molten resin to flow on the uneven surface portion and then solidifying.

このような構成によれば、樹脂部材の溶融固化した部分が金属部材に接合することとなり、樹脂部材と金属部材とを適切に接合させることが可能である。加えて、次のような効果が得られる。
第１に、樹脂部材を加熱溶融させるための手段として、回転ツールを樹脂部材に押し付けて回転させているために、摩擦熱によって樹脂部材を直接的に加熱することができる。回転ツールを金属部材に押し付けて回転させていた従来技術と比較すると、金属部材からの放熱ロスは大幅に少なくなり、樹脂部材を加熱溶融させる際のエネルギ効率がよい。したがって、省エネ、および省エネによるランニングコストの低減化を好適に図ることができる。また、樹脂部材を加熱溶融するための作業時間も短縮可能であり、生産性向上にも寄与する。
第２に、金属部材に形成された凹凸面部に樹脂部材の一部が噛み込んだ状態の接合構造が得られ、このことにより金属部材と樹脂部材との接合強度を高めることが可能である。本発明では、金属部材に凹凸面部を形成する作業は、回転ツールを利用して樹脂部材の一部を加熱溶融させた後であって、回転ツールを樹脂部材から引き続くまでの期間中において行なわれる。したがって、接合作業の開始前に、この接合作業とは全く別の作業として金属部材の表面を凹凸状に処理していた従来技術と比較すると、合理的であり、作業の煩雑さが解消される。したがって、生産性をより高め、作業コストなどの低減化を一層促進することができる。 According to such a configuration, the melted and solidified portion of the resin member is bonded to the metal member, and the resin member and the metal member can be appropriately bonded. In addition, the following effects can be obtained.
First, since the rotary tool is pressed against the resin member and rotated as means for heating and melting the resin member, the resin member can be directly heated by frictional heat. Compared with the prior art in which the rotary tool is pressed against the metal member and rotated, the heat dissipation loss from the metal member is greatly reduced, and the energy efficiency when the resin member is heated and melted is good. Therefore, energy saving and reduction of running cost by energy saving can be suitably achieved. Further, the work time for heating and melting the resin member can be shortened, which contributes to improvement of productivity.
Secondly, a joining structure in which a part of the resin member is engaged with the uneven surface portion formed on the metal member is obtained, and this makes it possible to increase the joining strength between the metal member and the resin member. In the present invention, the operation of forming the uneven surface portion on the metal member is performed after a part of the resin member is heated and melted using the rotary tool and until the rotary tool is continued from the resin member. . Therefore, compared with the prior art in which the surface of the metal member is processed in a concavo-convex shape as a completely different work before the joining work, it is rational and eliminates the complexity of the work. . Therefore, productivity can be further increased and reduction of work costs and the like can be further promoted.

本発明において、好ましくは、前記回転ツールまたは前記回転ツール用の動作機構には、前記樹脂部材を溶融させながら前記回転ツールを前記金属部材側に進行させていく際に生じる抵抗力を検出するための圧力センサを設けておき、この圧力センサによって所定以上の圧力が検出されたときには、前記回転ツールが前記金属部材の片面に到達したものと判断する。   In the present invention, preferably, the rotating tool or the operating mechanism for the rotating tool is for detecting a resistance force generated when the rotating tool is advanced toward the metal member while melting the resin member. When a pressure higher than a predetermined pressure is detected by the pressure sensor, it is determined that the rotating tool has reached one side of the metal member.

このような構成によれば、樹脂部材を溶融させながら回転ツールを金属部材側に進行させていく際に、回転ツールが金属部材の片面に到達すると、その旨を正確に、かつ迅速に察知することができる。したがって、たとえば回転ツールが金属部材の片面に到達しているにも拘わらず、その後も回転ツールを不必要に回転させ続けるといった無駄を無くし、直ちに、次の作業工程に移行することができる。したがって、作業性をより良好なものとすることが可能である。   According to such a configuration, when the rotary tool reaches one side of the metal member when the rotary tool is advanced to the metal member side while melting the resin member, the fact is detected accurately and quickly. be able to. Therefore, for example, although the rotating tool has reached one side of the metal member, it is possible to eliminate the waste of continuing to rotate the rotating tool unnecessarily thereafter, and it is possible to immediately proceed to the next work process. Accordingly, it is possible to improve the workability.

本発明のその他の特徴および利点は、添付図面を参照して以下に行なう発明の実施の形態の説明から、より明らかになるであろう。   Other features and advantages of the present invention will become more apparent from the following description of embodiments of the present invention with reference to the accompanying drawings.

（ａ）〜（ｆ）は、本発明に係る金属部材と樹脂部材との接合方法の一例を示す要部概略断面図である。(A)-(f) is principal part schematic sectional drawing which shows an example of the joining method of the metal member and resin member which concern on this invention. （ａ）〜（ｅ）は、本発明の他の例を示す要部概略断面図である。(A)-(e) is a principal part schematic sectional drawing which shows the other example of this invention.

以下、本発明の好ましい実施の形態について、図面を参照して具体的に説明する。   Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the drawings.

〔第１の実施形態〕
図１に示す実施形態の接合方法では、接合装置Ａ１が用いられる。同図（ａ）を参照して、接合装置Ａ１の構成をまず説明する。
接合装置Ａ１は、回転ツール１、金属用加工ツール２、および押さえ部材３を備えている。 [First Embodiment]
In the bonding method of the embodiment shown in FIG. 1, a bonding apparatus A1 is used. First, the configuration of the joining apparatus A1 will be described with reference to FIG.
The joining apparatus A1 includes a rotary tool 1, a metal processing tool 2, and a pressing member 3.

回転ツール１は、略円筒状に形成されており、たとえば硬質の金属製である。この回転ツール１は、昇降機構６０および回転機構６１に駆動連結されており、昇降動作および回転動作が可能である。昇降機構６０または回転ツール１には、圧力センサ６２が付属して設けられている。この圧力センサ６２は、回転ツール１を下降させていく際の抵抗力を検出するのに利用される。   The rotary tool 1 is formed in a substantially cylindrical shape, and is made of, for example, a hard metal. The rotary tool 1 is drivingly connected to an elevating mechanism 60 and a rotating mechanism 61, and can perform an elevating operation and a rotating operation. The lifting mechanism 60 or the rotary tool 1 is provided with a pressure sensor 62 attached thereto. The pressure sensor 62 is used to detect a resistance force when the rotary tool 1 is lowered.

金属用加工ツール２は、金属部材４の表面に後述する凹凸面部４０を形成するためのものであり、回転ツール１の孔部内に配されている。この金属用加工ツール２は、昇降機構６５および回転機構６６に駆動連結されており、回転ツール１や押さえ部材３とは独立して昇降および回転動作が可能である。この金属用加工ツール２の下端先端面には、金属切削用の複数の刃部２０が設けられており、金属用加工ツール２を回転させながら刃部２０を金属部材４の表面に押し当てることにより、金属部材４の表面に複数の凹溝を形成することが可能である。   The metal processing tool 2 is for forming an uneven surface portion 40 to be described later on the surface of the metal member 4, and is disposed in the hole of the rotary tool 1. The metal processing tool 2 is drivingly connected to an elevating mechanism 65 and a rotating mechanism 66, and can move up and down and rotate independently of the rotating tool 1 and the pressing member 3. A plurality of blade portions 20 for metal cutting are provided on the lower end tip surface of the metal processing tool 2, and the blade portion 20 is pressed against the surface of the metal member 4 while rotating the metal processing tool 2. Thus, a plurality of concave grooves can be formed on the surface of the metal member 4.

押さえ部材３は、後述するように溶融樹脂を押さえるための部材であり、たとえば中空円板状である。この押さえ部材３は、回転ツール１に対して相対摺動可能に外嵌され、かつ昇降機構６７に駆動連結されており、回転ツール１や金属用加工ツール２とは独立して昇降可能である。   As will be described later, the pressing member 3 is a member for pressing the molten resin, and has, for example, a hollow disk shape. The pressing member 3 is externally fitted so as to be slidable relative to the rotary tool 1 and is drivingly connected to the lifting mechanism 67 and can be lifted and lowered independently of the rotating tool 1 and the metal processing tool 2. .

次に、本実施形態の金属部材と樹脂部材との接合方法を説明する。   Next, the joining method of the metal member and resin member of this embodiment is demonstrated.

まず、図１（ａ）に示すように、金属部材４上に樹脂部材５を重ね合わせた状態において、回転ツール１を高速で回転させながら下降させていき、同図（ｂ）に示すように、回転ツール１を樹脂部材５の表面に押し付ける。このことにより、摩擦熱を発生させ、樹脂部材５を溶融させながら、回転ツール１を順次下降させていく。   First, as shown in FIG. 1A, in a state where the resin member 5 is superimposed on the metal member 4, the rotary tool 1 is lowered while rotating at a high speed, as shown in FIG. The rotary tool 1 is pressed against the surface of the resin member 5. As a result, frictional heat is generated and the rotary tool 1 is sequentially lowered while the resin member 5 is melted.

回転ツール１の下降は、図１（ｃ）に示すように、回転ツール１の下端部が金属部材４の片面に到達するまで実行させ、到達後には、回転ツール１の下降動作を停止させる。回転ツール１が金属部材４の片面に到達した際には、圧力センサ６２による検出値が急激に上昇し、所定値を超えることとなるため、圧力センサ６２の検出値に基づき、回転ツール１が金属部材４の片面に到達した旨を正確に察知することが可能である。図１（ｃ）において、回転ツール１の周囲に位置する樹脂は、溶融樹脂となっている。   The lowering of the rotating tool 1 is performed until the lower end of the rotating tool 1 reaches one side of the metal member 4 as shown in FIG. 1C, and after that, the lowering operation of the rotating tool 1 is stopped. When the rotary tool 1 reaches one side of the metal member 4, the detection value by the pressure sensor 62 rapidly increases and exceeds a predetermined value. Therefore, based on the detection value of the pressure sensor 62, the rotary tool 1 is It is possible to accurately detect that one side of the metal member 4 has been reached. In FIG. 1C, the resin located around the rotary tool 1 is a molten resin.

回転ツール１が金属部材４の片面まで到達した後には、図１（ｄ）に示すように、金属用加工ツール２を回転させながら下降させ、金属部材４の片面に凹凸面部４０を形成する。次いで、同図（ｅ）,（ｆ）に示すように、回転ツール１および金属用加工ツール２を上昇させ、これらを樹脂部材５から引き抜く。その際、押さえ部材３については上昇のタイミングを遅らせ、この押さえ部材３によって溶融樹脂部分の上側を押さえるようにする。同図（ｆ）に示すように、回転ツール１および金属用加工ツール２の引き抜きを終えた後には、溶融樹脂が金属部材４の凹凸面部４０上を覆うように流動し、かつその後に固化することとなる。したがって、最終的には、樹脂部材５の一部が金属部材４の凹凸面部４０と噛み合うようにして金属部材４に融着した状態の接合構造が得られ、金属部材４と樹脂部材５とを高強度に接合することが可能である。   After the rotary tool 1 reaches one side of the metal member 4, as shown in FIG. 1D, the metal processing tool 2 is lowered while rotating to form the uneven surface portion 40 on one side of the metal member 4. Next, as shown in FIGS. 4E and 4F, the rotary tool 1 and the metal processing tool 2 are raised and pulled out from the resin member 5. At that time, the pressing member 3 is delayed in its rising timing, and the pressing member 3 presses the upper side of the molten resin portion. As shown in FIG. 5F, after the extraction of the rotary tool 1 and the metal processing tool 2 is finished, the molten resin flows so as to cover the uneven surface portion 40 of the metal member 4 and then solidifies. It will be. Therefore, finally, a joined structure in which the resin member 5 is fused to the metal member 4 so that a part of the resin member 5 meshes with the concave and convex surface portion 40 of the metal member 4 is obtained, and the metal member 4 and the resin member 5 are joined. It is possible to join with high strength.

前記した接合方法によれば、回転ツール１を樹脂部材５に押し付けて回転させているた
めに、摩擦熱によって樹脂部材５を直接かつ効率よく加熱することができる。たとえば、回転ツール１を金属部材４に押し付ける場合と比較すると、放熱ロスは相当に少なく、加熱効率、エネルギ効率がよい。また、金属部材４に凹凸面部４０を形成する作業は、金属部材４と樹脂部材５との接合作業途中で行なわれ、効率よく迅速に実行することができる。接合作業の開始前に金属部材４の表面を凹凸状に形成する必要はないため、全体の作業性がよく、作業コストなどの低減化を好適に図ることが可能である。 According to the joining method described above, since the rotary tool 1 is pressed against the resin member 5 and rotated, the resin member 5 can be directly and efficiently heated by frictional heat. For example, compared with the case where the rotary tool 1 is pressed against the metal member 4, the heat dissipation loss is considerably small, and the heating efficiency and energy efficiency are good. Moreover, the operation | work which forms the uneven | corrugated surface part 40 in the metal member 4 is performed in the middle of the joining operation | work of the metal member 4 and the resin member 5, and can be performed efficiently and rapidly. Since it is not necessary to form the surface of the metal member 4 in a concavo-convex shape before the start of the joining operation, the overall workability is good, and it is possible to suitably reduce the operation cost.

〔第２の実施形態〕
図２に示す実施形態の接合方法では、接合装置Ａ２が用いられる。なお、図２において、図１に示した第１の実施形態と同一または類似の構成要素には、第１の実施形態と同一の符号を用いている。 [Second Embodiment]
In the bonding method of the embodiment shown in FIG. 2, a bonding apparatus A2 is used. In FIG. 2, the same reference numerals as those in the first embodiment are used for the same or similar components as those in the first embodiment shown in FIG.

接合装置Ａ２においては、回転ツール１Ａがたとえば円柱状とされており、その先端部には、複数の刃部２０Ａが設けられている。これらの刃部２０Ａは、たとえば図１に示した金属用加工ツール２の刃部２０Ａと同様な構造であり、金属部材４の表面を切削して凹凸面部４０を形成するのに役立つ。   In the joining device A2, the rotary tool 1A has a columnar shape, for example, and a plurality of blade portions 20A are provided at the tip thereof. These blade portions 20A have the same structure as the blade portion 20A of the metal processing tool 2 shown in FIG. 1, for example, and are useful for cutting the surface of the metal member 4 to form the uneven surface portion 40.

本実施形態の接合方法では、前記実施形態と同様に、図２（ｂ）に示すように、回転ツール１Ａを回転させながら下降させていくことにより、この回転ツール１Ａと樹脂部材５との摩擦熱を利用して樹脂部材５を適切に加熱溶融させることが可能である。回転ツール１Ａが樹脂部材５の表面に当接した直後においては、刃部２０Ａによって樹脂部材５のごく一部は切削されるものの、その後は、回転ツール１Ａの下降速度を適切に制御することにより、刃部２０Ａによって樹脂部材５が切削されるよりも前に樹脂部材５を摩擦熱によって溶融させることが可能である。樹脂部材５が切削され続けるといったことは適切に回避される。図２（ｂ）において、回転ツール１Ａの周囲は、溶融樹脂である。   In the joining method of this embodiment, as shown in FIG. 2B, the friction between the rotating tool 1A and the resin member 5 is lowered by rotating the rotating tool 1A as shown in FIG. It is possible to heat and melt the resin member 5 appropriately using heat. Immediately after the rotary tool 1A comes into contact with the surface of the resin member 5, a small part of the resin member 5 is cut by the blade portion 20A, but thereafter, the descending speed of the rotary tool 1A is appropriately controlled. The resin member 5 can be melted by frictional heat before the resin member 5 is cut by the blade portion 20A. It is appropriately avoided that the resin member 5 continues to be cut. In FIG. 2B, the periphery of the rotary tool 1A is a molten resin.

図２（ｃ）に示すように、回転ツール１Ａが金属部材４の片面に到達した後においては、回転ツール１Ａの先端部の刃部２０Ａを利用して金属部材４に凹凸面部４０を形成する。圧力センサ６２を利用して、回転ツール１Ａが金属部材４の片面に到達した時期を適切に検出すれば、金属部材４に凹凸面部４０を形成する際の凹部の切削深さなどを所定の寸法に正確に規定することが可能である。なお、金属部材４に凹凸面部４０を形成する場合と、樹脂部材５との間で摩擦熱を発生させる場合とでは、回転ツール１Ａの回転速度や下降速度を相違させてもよいことは勿論である。   As shown in FIG. 2C, after the rotary tool 1A reaches one side of the metal member 4, the uneven surface portion 40 is formed on the metal member 4 using the blade portion 20A at the tip of the rotary tool 1A. . If the time when the rotary tool 1A reaches one side of the metal member 4 is appropriately detected by using the pressure sensor 62, the cutting depth of the concave portion when the concave and convex surface portion 40 is formed on the metal member 4 has a predetermined dimension. It is possible to specify precisely. Of course, the rotational speed and lowering speed of the rotary tool 1A may be different between the case where the uneven surface portion 40 is formed on the metal member 4 and the case where frictional heat is generated between the metal member 4 and the resin member 5. is there.

その後は、図２（ｄ），（ｅ）に示すように、押さえ部材３によって溶融樹脂を押さえながら、回転ツール１Ａを上昇させて樹脂部材５から引き抜く。このことにより、図１に示した実施形態と同様に、溶融樹脂を凹凸面部４０上に流動させてから固化させ、樹脂部材５と金属部材４とを高強度に接合することができる。
本実施形態によれば、前記実施形態の金属用加工ツール２を用いないために、接合装置Ａ２の構造を簡素にすることができる利点が得られる。 Thereafter, as shown in FIGS. 2D and 2E, the rotary tool 1 </ b> A is lifted and pulled out from the resin member 5 while holding the molten resin by the pressing member 3. As a result, like the embodiment shown in FIG. 1, the molten resin can be solidified after flowing on the concavo-convex surface portion 40, and the resin member 5 and the metal member 4 can be bonded with high strength.
According to this embodiment, since the metal processing tool 2 of the above embodiment is not used, an advantage that the structure of the joining device A2 can be simplified is obtained.

本発明は、上述した実施形態の内容に限定されない。本発明に係る金属部材と樹脂部材との接合方法の各作業工程の具体的な構成は、本発明の意図する範囲内において種々に変更自在である。
接合対象となる金属部材および樹脂部材の具体的な材質、形状、サイズなどは限定されない。 The present invention is not limited to the contents of the above-described embodiment. The specific configuration of each work process of the method for joining the metal member and the resin member according to the present invention can be variously changed within the range intended by the present invention.
The specific material, shape, size, etc. of the metal member and resin member to be joined are not limited.

１，１Ａ 回転ツール
２ 金属用加工ツール
４ 金属部材
５ 樹脂部材
２０，２０Ａ 刃部
４０ 凹凸面部
６２ 圧力センサ DESCRIPTION OF SYMBOLS 1,1A Rotating tool 2 Metal processing tool 4 Metal member 5 Resin member 20, 20A Blade part 40 Uneven surface part 62 Pressure sensor

Claims (2)

金属部材および樹脂部材を重ね合わせた状態において、前記樹脂部材に対して回転ツールを回転させながら押し付けることにより摩擦熱を発生させ、前記樹脂部材を溶融させながら前記回転ツールを前記金属部材側に進行させていく工程と、
前記回転ツールが前記樹脂部材を貫通して前記金属部材の片面に到達した後に、前記回転ツールの先端部に設けられている刃部、または前記回転ツールに付属して設けられた金属用加工ツールを利用して、前記金属部材の片面に凹凸面部を形成する工程と、
前記凹凸面部を形成した後に前記回転ツールを前記樹脂部材から引き抜き、溶融樹脂を前記凹凸面部上に流動させてから固化させる工程と、
を有していることを特徴とする、金属部材と樹脂部材との接合方法。 In a state where the metal member and the resin member are overlapped with each other, friction heat is generated by pressing the rotating tool against the resin member while rotating, and the rotating tool advances toward the metal member while melting the resin member. And the process of letting
After the rotary tool penetrates the resin member and reaches one surface of the metal member, a blade provided at the tip of the rotary tool, or a metal processing tool provided attached to the rotary tool Using the step of forming an uneven surface portion on one side of the metal member,
Extracting the rotary tool from the resin member after forming the uneven surface portion, allowing the molten resin to flow on the uneven surface portion and then solidifying;
A method for joining a metal member and a resin member, characterized by comprising: 請求項１に記載の金属部材と樹脂部材との接合方法であって、
前記回転ツールまたは前記回転ツール用の動作機構には、前記樹脂部材を溶融させながら前記回転ツールを前記金属部材側に進行させていく際に生じる抵抗力を検出するための圧力センサを設けておき、
この圧力センサによって所定以上の圧力が検出されたときには、前記回転ツールが前記金属部材の片面に到達したものと判断する、金属部材と樹脂部材との接合方法。 A method for joining the metal member and the resin member according to claim 1,
The rotary tool or the operating mechanism for the rotary tool is provided with a pressure sensor for detecting a resistance force generated when the rotary tool is advanced toward the metal member while melting the resin member. ,
A method for joining a metal member and a resin member, wherein when the pressure sensor detects a pressure equal to or higher than a predetermined value, it is determined that the rotary tool has reached one side of the metal member.
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JP2019147293A (en) * 2018-02-27 2019-09-05 株式会社栗本鐵工所 Friction stir joining method for metal member and resin member and its joining structure

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JPS57160609A (en) * 1981-03-30 1982-10-04 Nippon Seikan Kk Providing method of score for poening at top plate of can and attaching method of pull
JPS6264527A (en) * 1985-09-18 1987-03-23 Toyota Motor Corp Joining of synthetic resin material and different material
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Publication number Priority date Publication date Assignee Title
JP2019147293A (en) * 2018-02-27 2019-09-05 株式会社栗本鐵工所 Friction stir joining method for metal member and resin member and its joining structure
JP7041875B2 (en) 2018-02-27 2022-03-25 株式会社栗本鐵工所 Friction stir welding method of metal member and resin member and its joining structure

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