JP2004338279A - Method for filling hole of thermoplastic resin molding - Google Patents

Method for filling hole of thermoplastic resin molding Download PDF

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Publication number
JP2004338279A
JP2004338279A JP2003139005A JP2003139005A JP2004338279A JP 2004338279 A JP2004338279 A JP 2004338279A JP 2003139005 A JP2003139005 A JP 2003139005A JP 2003139005 A JP2003139005 A JP 2003139005A JP 2004338279 A JP2004338279 A JP 2004338279A
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Japan
Prior art keywords
hole
thermoplastic resin
filling
diameter
cylindrical body
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JP2003139005A
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JP4128484B2 (en
Inventor
Toshiyoshi Koga
寿義 古賀
Kazuyuki Yamashita
一幸 山下
Susumu Noda
進 野田
Akihiro Takeuchi
明宏 竹内
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Toyo Heisei KK
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Heisei Polymer 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
    • B29C66/71—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 composition of the plastics material of the parts to be joined

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for filling the hole of a thermoplastic resin molding which can save labor, reduce costs, and fill the hole to put up with a high pressure of at least 1 MPa. <P>SOLUTION: The method includes an expansion process in which a funnel-shaped expansion part 14 expanding toward the outside is formed in relation to the hole 24a formed in the thermoplastic resin molding (molding 11) and a sealing process in which a thermoplastic resin plug 27 in a shape corresponding to the expansion part 14, while being rotated, is rotation friction-welded to the expansion part 14. In the method, before the expansion process, a packing process in which a thermoplastic resin cylindrical body 12 having a diameter corresponding to that of the hole 24a, while being rotated, is inserted into the hole 24a formed in the molding 11 is preferably provided. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、熱可塑性樹脂成形体に形成された穴を熱可塑性樹脂で埋める穴埋め方法に関する。
【０００２】
【従来の技術】
複雑な形状の熱可塑性樹脂製成形体（以下、成形体と略す）に穴を形成する場合、穴の形成位置によっては、最終的な製品では穴が不要な部分までも穿孔せざるをえないことがある。例えば、図５に示すような、幅の狭い溝部２２が形成され、その溝部２２の側面に穴２４ｂが形成された成形体１１を作製しようとする場合、溝部２２にドリルなどの穿孔手段が入らないので、図６に示すように、穴を必要としない部分２８の側面２１から穿孔して、穴２４ａを形成させてから必要な穴２４ｂを形成させることがある。このようにした場合、穴２４ａは不要であるから、熱可塑性樹脂で埋める工程が行われる。
【０００３】
成形体の穴を熱可塑性樹脂で埋める従来の穴埋め方法について図７、図８を参照して説明する。なお、図７，図８は、穴の中心軸に沿って成形体を切断したときの横断面図である。
従来の穴埋め方法では、まず、穴埋めしようとする穴にネジ加工を施すとともに、外径が穴の内径に略同等な熱可塑性樹脂製円柱体（以下、円柱体と略す）に穴のネジに対応したネジ加工を施す。次いで、図７（ａ）に示すように、ネジ加工が施された円柱体３１を成形体１１の穴２４ａに手でねじ込んで、図７（ｂ）に示すように、円柱体３１を穴２４ａに充填していた。
しかしながら、上述した穴埋め方法では、穴埋めしようとする穴と円柱体とにネジ加工を施さなければならず、しかも、円柱体を手でねじ込んでいたため、手間を要しており、コストが高くなっていた。また、円柱体をねじ込んだだけでは、強固に固定できず内部からの高圧力に耐えられないことがあった。
【０００４】
そこで、円柱状の栓を熱融着により固定する方法も検討されている。すなわち、埋めるべき穴の内面と円柱状の栓の外面をあらかじめ加熱溶融させてから栓を差し込み、冷却固着させる方法が検討されている。この加熱溶着法としては、特許文献１に開示された加熱ヒータにより加熱する方法や、特許文献２に示されたホットエアまたはフレーム処理による方法などが提案されている。
【０００５】
【特許文献１】
特開平４−３２１８９４号公報
【特許文献２】
特開平５−２５４０４２号公報
【０００６】
【発明が解決しようとする課題】
しかしながら、上述した加熱溶着法によっても、ねじ込み法に比して手間はそれほど変わらず、耐圧性も十分とは言えなかった。
上述したように、成形体を穿孔し、穴埋めして製造するものとしては、例えば、フィルタープレスに備えられる濾過板などが挙げられるが、濾過板においてはコストが低く、耐圧性に優れたものが求められていた。
本発明は、前記事情を鑑みてなされたものであり、手間を少なくしてコストを低くでき、しかも、１ＭＰａ以上の高圧力にも耐えるように穴埋めできる熱可塑性樹脂成形体の穴埋め方法を提供することを目的とする。
【０００７】
【課題を解決するための手段】
本発明の熱可塑性樹脂成形体の穴埋め方法は、熱可塑性樹脂成形体に形成された穴に対して、外側に向けて拡径する漏斗状の拡径部を形成する拡径工程と、
該拡径部に対応する形状の熱可塑性樹脂製栓体を回転させながら拡径部に回転摩擦溶接する封止工程とを有することを特徴とする。
本発明の熱可塑性樹脂成形体の穴埋め方法においては、前記拡径工程前に、熱可塑性樹脂成形体に形成された穴中に、該穴の太さに対応した太さの熱可塑性樹脂製円柱体を回転させながら挿入、溶接する充填工程を有することが好ましい。
【０００８】
【発明の実施の形態】
本発明の熱可塑性樹脂成形体の穴埋め方法の一実施形態例について図面を参照して説明する。
本実施形態例は、図６に示すような、側面２１から穿孔されて溝部２２の対向する面２３ａ，２３ｂに穴２４ａ，２４ｂが形成された熱可塑性樹脂成形体１１の穴２４ａを穴埋めする例であって、熱可塑性樹脂がポリプロピレンの例である。
【０００９】
この穴埋め方法の工程について、穴の中心軸に沿って成形体を切断したときの横断面図である図１，図２を参照して説明する。まず、図１（ａ）に示すように、充填工程として、ドリル２５のチャック２６に、穴の太さに対応した太さのポリプロピレン製の円柱体１２を取り付け、ドリル２５を回転させてその円柱体１２を回転させながら成形体１１の穴に挿入して回転摩擦溶接する。次いで、図１（ｂ）に示すように、円柱体１２を穴２４ａに充填した後、円柱体１２の、ドリルのチャックに掴まれていた部分１３を切断する。
次いで、拡径工程において、図１（ｃ）に示すように、成形体１１に形成され、円柱体１２が充填された穴２４ａに対して、外側に向けて拡径する漏斗状の拡径部１４を回転切削刃２７により形成し、図２（ａ）に示すように、ドリル２５のチャック２６に、拡径部１４に対応する形状のポリプロピレン製の栓体１５を取り付ける。そして、封止工程において、ドリル２５を回転させて栓体１５を回転させながら拡径部１４に回転摩擦溶接して、図２（ｂ）に示すように、穴埋めを完了する。
【００１０】
上述した穴埋め方法において、回転摩擦溶接とは、熱可塑性樹脂からなる物体を回転させながら熱可塑性樹脂に形成された穴に挿入し、その際に発生する物体と穴との摩擦熱によって熱可塑性樹脂を溶融し、それらを溶接することである。回転摩擦溶接については、異なる目的として実用されている（参照：例えば、特開平６−３１２２７９号公報、特開平１１−１１５０５５号公報、特開昭５３−３３９５４号公報、特開昭５７−９６８２１号公報）。
【００１１】
ただし、円柱体１２の外径、円柱体１２を回転摩擦溶接する際の回転数は、より良好に溶接するために、成形体１１の穴の径によって適宜変更することが好ましい。本実施形態例のように、成形体１１および円柱体１２の材質がポリプロピレンである場合には、穴２４ａの径Ｄ０ に応じて、表１に示すような、円柱体１２の外径Ｄ１ 、回転数にすることが好ましい。
さらに、栓体１５の外径と、栓体１５を回転摩擦溶接する際の回転数は、成形体の穴の径によって適宜変更することが好ましく、成形体１１および栓体１５の材質がポリプロピレンである場合には、穴２４ａの径Ｄ０ に応じて、表２に示すような、栓体１５の外径Ｄ２ 、回転数にすることが好ましい。
【００１２】
【表１】

Figure 2004338279
【００１３】
【表２】
Figure 2004338279
【００１４】
栓体１５は、拡径部１４に対応する形状になっている。ここで、栓体１５を拡径部１４に対応する形状にするには、栓体１５の先端の角度Ａ（図３（ａ）参照）と、拡径部を形成する回転切削刃２７の先端の角度Ｂ（図３（ｂ）参照）とを略同等にすればよい。
【００１５】
充填工程で穴２４ａに充填される円柱体１２の太さは、円柱体１２を回転させながら穴２４ａに挿入する際に摩擦熱が発生するように、穴２４ａの内径より僅かに大きくなっている。
円柱体１２の長さＬ（図４参照）は特に制限はないが、円柱体１２をドリルのチャックに取り付けやすいことから、円柱体１２の外径Ｄ１が１３ｍｍ以上の場合、長さＬは、穴埋めしようとする穴の長さ＋約１０ｍｍであることが好ましく、円柱体１２の外径Ｄ１が１３ｍｍ未満の場合、長さＬは、穴埋めしようとする穴の長さ＋約２０ｍｍであることが好ましい。
【００１６】
以上説明した穴埋め方法では、円柱体１２を回転摩擦溶接して穴２４ａに装填し、さらに、栓体１５を溶接しているので、穴２４ａおよび円柱体１２のネジ加工を省略できる。また、熱可塑性樹脂が半透明なポリプロピレンであり、溶接の具合を目視で確認できるので、漏れテストを省略できる。したがって、従来の穴埋め方法に比べて工数を削減でき、その結果、例えば、１個の製品を製造するのに要する時間を５０％削減でき、コストを４０％削減できる。
【００１７】
なお、本発明は上述した実施形態例に限定されない。例えば、熱可塑性樹脂成形体は溝部が形成されたもの以外であってもよく、不要な穴が形成された成形体であれば、本発明の穴埋め方法を適用できる。特に、本発明は、フィルタープレスに備えられる濾過板を作製する際に好ましく採用される。
【００１８】
また、熱可塑性樹脂としてはポリプロピレン以外のものであってもよく、例えば、ポリエチレンやポリアミドなどであってもよい。ただし、本発明では回転摩擦溶接するので、成形体と円柱体と栓体とは、同じ種類の熱可塑性樹脂あるいは互いに相溶する熱可塑性樹脂からなることが好ましい。
また、上述した実施形態例では、拡径工程の前に充填工程を有していたが、本発明では、充填工程を有していなくてもよい。ただし、充填工程を有していた方が、溶接後に円柱体に高圧力を付与した場合でも、圧力により栓が抜けることがより防止される。
【００１９】
【発明の効果】
本発明によれば、穴や円柱体にネジ加工を施す必要がないので、手間を少なくして低コストで穴埋めできる。しかも、栓体を穴に回転摩擦溶接するから、１ＭＰａ以上の高圧力にも耐えるように穴埋めできる。
さらに、拡径工程の前に充填工程を有していれば、より高圧力にもより耐えるように穴埋めできる。
【図面の簡単な説明】
【図１】本発明の熱可塑性樹脂成形体の穴埋め方法の一実施形態例を工程順に示す横断面図である。
【図２】本発明の熱可塑性樹脂成形体の穴埋め方法の一実施形態例を工程順に示す横断面図である。
【図３】（ａ）は栓体を示す側面図であり、（ｂ）は回転切削刃を示す側面図である。
【図４】円柱体を示す斜視図である。
【図５】必要な穴のみが形成された熱可塑性樹脂成形体の一例を示す斜視図である。
【図６】不要な穴が形成された熱可塑性樹脂成形体の一例を示す斜視図である。
【図７】従来の熱可塑性樹脂成形体の穴埋め方法を工程順に示す横断面図である。
【符号の説明】
１１ 成形体
１２ 円柱体
１４ 拡径部
２４ａ 穴[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a hole filling method for filling a hole formed in a thermoplastic resin molded body with a thermoplastic resin.
[0002]
[Prior art]
When a hole is formed in a thermoplastic resin molded article having a complicated shape (hereinafter, abbreviated as a molded article), depending on the position where the hole is formed, even a portion where the hole is unnecessary in the final product has to be perforated. Sometimes. For example, as shown in FIG. 5, when manufacturing a molded body 11 in which a narrow groove portion 22 is formed and a hole 24 b is formed on a side surface of the groove portion 22, a piercing means such as a drill is inserted into the groove portion 22. Since there is no hole, as shown in FIG. 6, the hole 24a may be formed after the hole 24a is formed by piercing the side surface 21 of the portion 28 that does not require a hole. In such a case, since the holes 24a are unnecessary, a step of filling with a thermoplastic resin is performed.
[0003]
A conventional hole filling method for filling a hole of a molded body with a thermoplastic resin will be described with reference to FIGS. FIGS. 7 and 8 are cross-sectional views when the molded body is cut along the center axis of the hole.
In the conventional hole filling method, first, the hole to be filled is threaded, and the outside diameter of the hole is changed to a thermoplastic cylindrical body (hereinafter abbreviated as a cylindrical body) that is almost equivalent to the inside diameter of the hole. Apply the screw processing. Next, as shown in FIG. 7A, the threaded cylindrical body 31 is manually screwed into the hole 24a of the molded body 11, and as shown in FIG. 7B, the cylindrical body 31 is inserted into the hole 24a. Had been filled.
However, in the above-described hole filling method, the hole to be filled and the cylindrical body have to be threaded, and since the cylindrical body is screwed by hand, it is troublesome and costly. I was Further, simply screwing the columnar body may not be able to be firmly fixed and may not be able to withstand high pressure from the inside.
[0004]
Therefore, a method of fixing a cylindrical plug by heat fusion is also being studied. That is, a method of heating and melting the inner surface of the hole to be filled and the outer surface of the cylindrical plug in advance, inserting the plug, and cooling and fixing is studied. As the heat welding method, a method of heating with a heater disclosed in Patent Document 1 and a method of hot air or flame treatment disclosed in Patent Document 2 have been proposed.
[0005]
[Patent Document 1]
JP-A-4-321894 [Patent Document 2]
Japanese Patent Application Laid-Open No. H5-254042
[Problems to be solved by the invention]
However, even with the above-described heat welding method, the time and labor were not so different as compared with the screwing method, and the pressure resistance was not sufficient.
As described above, as the one produced by piercing the molded body and filling the hole, for example, a filter plate provided in a filter press may be mentioned, but a filter plate having low cost and excellent pressure resistance is used. Was sought.
The present invention has been made in view of the above circumstances, and provides a method of filling a thermoplastic resin molded body that can reduce the cost by reducing the labor, and can also be filled to withstand a high pressure of 1 MPa or more. The purpose is to:
[0007]
[Means for Solving the Problems]
The hole filling method of the thermoplastic resin molded body of the present invention, a hole formed in the thermoplastic resin molded body, a diameter-enlarging step of forming a funnel-shaped enlarged portion that expands outward diameter,
A sealing step of rotating friction welding to the enlarged diameter portion while rotating the thermoplastic resin plug having a shape corresponding to the enlarged diameter portion.
In the method for filling a hole in a thermoplastic resin molded article of the present invention, before the diameter-expanding step, a thermoplastic resin cylinder having a thickness corresponding to the diameter of the hole is formed in a hole formed in the thermoplastic resin molded article. It is preferable to have a filling step of inserting and welding while rotating the body.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
One embodiment of the method for filling a hole in a thermoplastic resin molded article of the present invention will be described with reference to the drawings.
In the present embodiment, as shown in FIG. 6, a hole 24a of a thermoplastic resin molded body 11 having holes 24a and 24b formed in opposing surfaces 23a and 23b of a groove 22 is formed. And the thermoplastic resin is an example of polypropylene.
[0009]
The steps of the hole filling method will be described with reference to FIGS. 1 and 2 which are cross-sectional views of the molded body cut along the center axis of the hole. First, as shown in FIG. 1A, as a filling step, a polypropylene cylinder 12 having a thickness corresponding to the diameter of a hole is attached to a chuck 26 of a drill 25, and the cylinder is rotated by rotating the drill 25. The body 12 is inserted into the hole of the molded body 11 while rotating, and rotational friction welding is performed. Next, as shown in FIG. 1B, after the cylindrical body 12 is filled in the hole 24a, the portion 13 of the cylindrical body 12 that has been gripped by the chuck of the drill is cut.
Next, in a diameter expanding step, as shown in FIG. 1C, a funnel-shaped enlarged portion that expands outward in a hole 24 a formed in the molded body 11 and filled with the cylindrical body 12. 14 is formed by a rotary cutting blade 27, and a polypropylene plug 15 having a shape corresponding to the enlarged diameter portion 14 is attached to a chuck 26 of a drill 25 as shown in FIG. Then, in the sealing step, while the plug 25 is rotated by rotating the drill 25, rotational friction welding is performed on the enlarged diameter portion 14 to complete the filling as shown in FIG. 2B.
[0010]
In the above-described hole filling method, rotary friction welding refers to inserting a thermoplastic resin into a hole formed in a thermoplastic resin while rotating the thermoplastic resin, and generating the thermoplastic resin by frictional heat generated between the object and the hole. Melting them and welding them. Rotational friction welding has been used for different purposes (see, for example, JP-A-6-310279, JP-A-11-11055, JP-A-53-33954, and JP-A-57-96821). Gazette).
[0011]
However, it is preferable that the outer diameter of the cylindrical body 12 and the number of rotations at the time of rotational friction welding of the cylindrical body 12 be appropriately changed depending on the diameter of the hole of the molded body 11 for better welding. When the material of the molded body 11 and the cylindrical body 12 is polypropylene as in the present embodiment, the outer diameter D 1 of the cylindrical body 12 as shown in Table 1 according to the diameter D 0 of the hole 24a. , The number of rotations is preferable.
Further, it is preferable that the outer diameter of the plug 15 and the number of rotations at the time of rotational friction welding of the plug 15 are appropriately changed depending on the diameter of the hole of the molded product. The material of the molded product 11 and the plug 15 is polypropylene. In some cases, the diameter D 0 of the hole 24a It is preferable to set the outer diameter D 2 of the plug 15 and the number of rotations as shown in Table 2 in accordance with the above.
[0012]
[Table 1]
Figure 2004338279
[0013]
[Table 2]
Figure 2004338279
[0014]
The plug 15 has a shape corresponding to the enlarged diameter portion 14. Here, in order to form the plug 15 into a shape corresponding to the enlarged diameter portion 14, the angle A of the tip of the plug 15 (see FIG. 3A) and the tip of the rotary cutting blade 27 forming the enlarged diameter portion are used. May be made substantially equal to the angle B (see FIG. 3B).
[0015]
The thickness of the cylindrical body 12 filled in the hole 24a in the filling step is slightly larger than the inner diameter of the hole 24a so that frictional heat is generated when the cylindrical body 12 is inserted into the hole 24a while rotating. .
It is not particularly limited length L (see FIG. 4) of the cylindrical body 12, the cylindrical body 12 from the easily attached to the chuck of a drill, when the outer diameter D 1 of the cylindrical body 12 is not less than 13 mm, the length L is preferably a long + about 10mm holes to be filling, when the outer diameter D 1 of the cylindrical body 12 is less than 13 mm, the length L is the length + about 20mm holes to be filling Is preferred.
[0016]
In the hole filling method described above, the cylindrical body 12 is loaded into the hole 24a by rotational friction welding, and the plug 15 is further welded, so that the screw processing of the hole 24a and the cylindrical body 12 can be omitted. In addition, since the thermoplastic resin is translucent polypropylene and the degree of welding can be visually confirmed, a leak test can be omitted. Therefore, the number of steps can be reduced as compared with the conventional hole filling method, and as a result, for example, the time required to manufacture one product can be reduced by 50%, and the cost can be reduced by 40%.
[0017]
Note that the present invention is not limited to the above embodiment. For example, the thermoplastic resin molded body may be other than the one in which the groove is formed, and the hole filling method of the present invention can be applied to a molded body in which an unnecessary hole is formed. In particular, the present invention is preferably employed when producing a filter plate provided in a filter press.
[0018]
The thermoplastic resin may be other than polypropylene, for example, polyethylene or polyamide. However, since rotational friction welding is performed in the present invention, the molded body, the columnar body, and the plug are preferably made of the same type of thermoplastic resin or mutually compatible thermoplastic resins.
Further, in the above-described embodiment, the filling step is provided before the diameter expanding step, but the present invention may not include the filling step. However, having the filling step prevents the plug from coming off due to the pressure even when a high pressure is applied to the cylindrical body after welding.
[0019]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, since it is not necessary to apply a screw process to a hole or a cylindrical body, a hole can be filled at low cost with less labor. Moreover, since the plug is rotationally friction welded to the hole, the hole can be filled to withstand a high pressure of 1 MPa or more.
Further, if a filling step is provided before the diameter expanding step, the hole can be filled to withstand higher pressure.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing one embodiment of a method for filling a hole in a thermoplastic resin molded article of the present invention in the order of steps.
FIG. 2 is a cross-sectional view showing one embodiment of a method for filling a hole in a thermoplastic resin molded article according to the present invention in the order of steps.
FIG. 3A is a side view showing a plug, and FIG. 3B is a side view showing a rotary cutting blade.
FIG. 4 is a perspective view showing a cylindrical body.
FIG. 5 is a perspective view showing an example of a thermoplastic resin molded body in which only necessary holes are formed.
FIG. 6 is a perspective view showing an example of a thermoplastic resin molded body in which unnecessary holes are formed.
FIG. 7 is a cross-sectional view showing a conventional method for filling a hole in a thermoplastic resin molded article in the order of steps.
[Explanation of symbols]
11 molded body 12 cylindrical body 14 enlarged diameter portion 24a hole

Claims (2)

熱可塑性樹脂成形体に形成された穴に対して、外側に向けて拡径する漏斗状の拡径部を形成する拡径工程と、
該拡径部に対応する形状の熱可塑性樹脂製栓体を回転させながら拡径部に回転摩擦溶接する封止工程とを有することを特徴とする熱可塑性樹脂成形体の穴埋め方法。For a hole formed in the thermoplastic resin molded body, a diameter-enlarging step of forming a funnel-shaped diameter-enlarging portion whose diameter is increased outward.
A sealing step of performing rotational friction welding on the enlarged diameter portion while rotating the thermoplastic resin plug having a shape corresponding to the enlarged diameter portion. 前記拡径工程前に、熱可塑性樹脂成形体に形成された穴中に、該穴の太さに対応した太さの熱可塑性樹脂製円柱体を回転させながら挿入、溶接する充填工程を有することを特徴とする請求項１に記載の熱可塑性樹脂成形体の穴埋め方法。Before the diameter expanding step, a filling step of inserting and welding a thermoplastic resin cylindrical body having a thickness corresponding to the thickness of the hole into a hole formed in the thermoplastic resin molded body while rotating the same is provided. The method for filling a hole in a thermoplastic resin molded article according to claim 1, wherein:
JP2003139005A 2003-05-16 2003-05-16 Method for filling hole in thermoplastic resin molding Expired - Lifetime JP4128484B2 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009083502A (en) * 2008-11-25 2009-04-23 Brother Ind Ltd Method for producing synthetic resin assembly
US9114481B1 (en) * 2014-02-21 2015-08-25 Siemens Energy, Inc Inertia friction disk welding

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009083502A (en) * 2008-11-25 2009-04-23 Brother Ind Ltd Method for producing synthetic resin assembly
US9114481B1 (en) * 2014-02-21 2015-08-25 Siemens Energy, Inc Inertia friction disk welding
US20150239062A1 (en) * 2014-02-21 2015-08-27 Siemens Energy, Inc. Inertia friction disk welding

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