JP4969766B2 - How to remove parts - Google Patents
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- Publication number
- JP4969766B2 JP4969766B2 JP2003359828A JP2003359828A JP4969766B2 JP 4969766 B2 JP4969766 B2 JP 4969766B2 JP 2003359828 A JP2003359828 A JP 2003359828A JP 2003359828 A JP2003359828 A JP 2003359828A JP 4969766 B2 JP4969766 B2 JP 4969766B2
- Authority
- JP
- Japan
- Prior art keywords
- unfinished
- burr
- forging
- forged
- parts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000005242 forging Methods 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 15
- 238000005266 casting Methods 0.000 claims description 13
- 229910000838 Al alloy Inorganic materials 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 230000009191 jumping Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/002—Hybrid process, e.g. forging following casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
- B21J5/027—Trimming
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Description
本発明は、鋳造作業に係る技術分野および、これに関連するアルミニウムあるいはアルミニウム合金からなる部品の鍛造に関する。 The present invention relates to the technical field related to casting operations and related to forging of parts made of aluminum or aluminum alloys.
本出願人は、特許文献1によって特定されるCOBAPRESS(商標)と呼ばれる製法を実施している。この製法は、鋳造によって得られ、その後、鍛造工程に移行される未完成部品の製造に関するものである。
このCOBAPRESS(商標)製法は、本出願人によって開発された、さまざまな改良を受けている。 The COBAPRESS (TM) process has received various improvements developed by the applicant.
鋳物を鋳型から離脱させるのにエゼクタを使用することは知られている。エゼクタはまた、鍛造型から鍛造部品を離脱させるためにも使用される。 It is known to use an ejector to remove a casting from a mold. The ejector is also used to disengage the forged part from the forging die.
COBAPRESS(商標)と呼ばれる鋳造/鍛造製法では、未完成部品を得るために、この未完成部品を把持し、鍛造機械へ搬送する必要がある。この作業を行うため、従来の技法では、未完成部品にはエゼクタを受けるための特殊な部位が設けられていた。こうしたエゼクタは、機械的あるいは油圧あるいは電気的手段で動作させられるラム工具である。エゼクタは、鋳物を鋳型内のくぼみから取り出し、バリを有する鍛造された未完成部品を鍛造型の片方のくぼみから離脱させる。前述の特殊な部位は、未完成部品の本体に設けられていた。これが、以下のような数々の不具合を引き起こしている。 In the casting / forging process called COBAPRESS (trademark), in order to obtain an unfinished part, it is necessary to grip the unfinished part and transport it to a forging machine. In order to perform this work, in the conventional technique, the unfinished part is provided with a special part for receiving the ejector. Such ejectors are ram tools that can be operated by mechanical, hydraulic or electrical means. The ejector removes the casting from the recess in the mold and disengages the forged unfinished part with burrs from one recess of the forging die. The special part mentioned above was provided in the body of the unfinished part. This causes a number of problems as follows.
すなわち、エゼクタが過度に長いものであるか、あるいは膨張によって変形してしまった場合、部品のエゼクタマークは、不適当な、あるいは意図しない不ぞろいな凹状のものとなる。したがって、未完成部品のこの場所では材料が少なくなる。 That is, when the ejector is excessively long or deformed due to expansion, the ejector mark of the component becomes an inappropriate or unintended irregular concave shape. Therefore, there is less material at this location of the unfinished part.
エゼクタが過度に短いものである場合、エゼクタマークは***が特徴的な形状となる。ゆえに、この場所は材料が多すぎることになる。 If the ejector is too short, the ejector mark will have a characteristic shape of ridges. This place is therefore too much material .
エゼクタが磨耗したものであると、部品には***状のバリが形成されることになる。このバリは、ひとたび鍛造がなされると、ひびのきっかけとなる。 If the ejector is worn, a raised burr will be formed on the part. This burr becomes a trigger for cracks once forged.
図1および図2はそれぞれ、部品に残ったバリ片と、鍛造された部品に折り返し(fold)を発生させる同様のバリを示している。 FIGS. 1 and 2 each show a burr piece remaining on the part and a similar burr that causes a fold to occur on the forged part.
未完成部品にエゼクタ(マーク)があると、実際のところ、未完成部品のエゼクタ(マーク)の欠陥に関し多くの問題を伴う。個々の欠陥は、鍛造後、使用者によって機械的な応力が加えられた際に、最終構造についての応力集中および潜在的な破損の原因となることがある。 When an unfinished part has an ejector (mark), it is actually accompanied by a number of problems related to defects in the ejector (mark) of the unfinished part. Individual defects can cause stress concentrations and potential damage to the final structure when mechanical stress is applied by the user after forging.
さらに従来技術では、未完成部品の寸法上の形状によっては、エゼクタを受ける部位を見出すのが難しいことがあった。これらの部位の数を制限することによって、突き出し力を集中させ、局所的に高温物体の強度を増大させる原因となり、かつ、それをくぼみからの排出/摘出する間に、未完成部品からその一部を剥ぎ取る結果となったり、そうでなければ未完成部品にゆがみを生じさせたりすることが知られている。こうしたことが部品を型に載置した際に問題となり、それに続く鍛造段階の間に、欠陥の発生を促す条件を生じさせることさえある。 Furthermore, in the prior art, depending on the dimensional shape of the unfinished part, it may be difficult to find the part that receives the ejector. Limiting the number of these sites will cause the thrust force to concentrate, locally increase the strength of the hot object, and remove it from the unfinished part while discharging / extracting it from the indentation. It is known to result in stripping of the part or otherwise distort the unfinished part. This can be a problem when the part is placed on the mold, and even during the subsequent forging stage can create conditions that promote the occurrence of defects.
本発明における意図された目的は、こうした不都合な点を回避することである。 The intended purpose of the present invention is to avoid these disadvantages.
本発明によれば、この方法は、エゼクタを受け止める問題の部位を未完成部品の本体から移動させ、これらの部位を未完成部品の周側面のへりに沿って、応力を受けない領域に設けておくとともに、鍛造段階では、未完成部品の取り出しを可能にする前記部位が鍛造部品のバリとなるようにし、バリとともに切断し、これによって取り除こうとするものである。 In accordance with the present invention, this method moves the problematic parts that catch the ejector from the body of the unfinished part and provides these parts along the edge of the peripheral side of the unfinished part in a region that is not subject to stress. In addition, in the forging stage, the part that enables unfinished parts to be taken out becomes a burr of the forged part, and is cut together with the burr and thereby removed.
これらの特徴および更なる特徴については、残りの説明によって、はっきりと明白になる。 These and further features will be clearly apparent from the remaining description.
本発明の内容を説明するため、図面を用いて、本発明に限定を加えない手法により、それを例示する。ここで、図1は従来技術による未完成部品に残った小さなバリ片を示す詳細図、図2は従来技術による未完成部品に残った小さなバリ片を示す詳細図、図3は従来技術による、アルミニウムあるいはアルミニウム合金部品を得るためのCOBAPRESS(商標)と呼ばれる鋳造/鍛造製法の実施にあたって用いられる跳ね出し部位が設けられた未完成部品の図、図4は外縁の周囲に跳ね出し部位が設けられた本発明に係る未完成部品の図、図5は鍛造後に得られた図4と同様の部品の図、図6は鋳造によって得られた部品の未完成部品であり、図7は部品の側面が機械加工される場合の、鍛造後の未完成部品の跳ね出し部位を示し、そして図8は部品の側面が鍛造されたままの状態で残る場合の、鍛造後の未完成部品の跳ね出し部位を示す。 In order to explain the contents of the present invention, it will be exemplified by a technique that does not limit the present invention, using the drawings. Here, FIG. 1 is a detailed view showing a small burr piece remaining on an unfinished part according to the prior art, FIG. 2 is a detailed view showing a small burr piece remaining on an unfinished part according to the prior art, and FIG. Figure of an unfinished part provided with a jumping part used in the implementation of a casting / forging process called COBAPRESS ™ for obtaining aluminum or aluminum alloy parts. Fig. 4 shows a jumping part around the outer edge. FIG. 5 is a view of a part similar to FIG. 4 obtained after forging, FIG. 6 is an unfinished part of the part obtained by casting, and FIG. 7 is a side view of the part. FIG. 8 shows the unfinished part bounce site after forging, when FIG. 8 is machined, and FIG. 8 shows the unfinished part bounce portion after forging when the side of the part remains forged. Indicate
本発明の内容をさらに明確なものとするため、ここで、本発明に限定を加えない手法によりそれを解説し、そして図面を用いて例示する。 In order to make the content of the present invention clearer, it will be explained here by means of a method not limiting the present invention, and will be exemplified with reference to the drawings.
アルミニウムあるいはアルミニウム合金を鋳造して得られる部品の未完成部品2を図6に示す。この未完成部品は、それに由来する部品の使用条件および応用条件に合致させるため所定の形状および寸法を有している。
FIG. 6 shows an
本発明によれば、上記未完成部品2は、周側面のへり2aに沿って、かつ製造される部品の外側に、型から前記未完成部品を離脱させる一揃いのエゼクタのためのスラストコンタクトを受ける面2cを形成できる、一つあるいは二つ以上の連続的な、あるいは離れ離れになった突出部位2bを有する。
According to the present invention, the
上記突出部位あるいは突出部位群2bは補足的な付属物から構成される。この突出部位あるいはこれらの突出部位群は応力を受けない領域に配置される。ゆえに、これらの部位に応力が集中する危険はない。
The protruding portion or protruding
鍛造段階では、未完成部品の取り出しを可能にする上記部位2bは、鍛造部品のバリとなっており、バリとともに切断される。
In the forging stage, the
さらに、エゼクタを受け止める部位が未完成部品であり、かつ最終部品でもあるその外側に存在するという事実が、くぼみから取り出す際の、そして搬送中における後者の安定性の改善を可能にする。 Furthermore, the fact that the site for receiving the ejector is an unfinished part and is located outside it, which is also the final part, allows for improved stability of the latter upon removal from the recess and during transport.
部品の側面が機械加工され、そしてバリ2dが除去される場合の、鍛造後におけるこの未完成部品の跳ね出し部位を図7に示す。 FIG. 7 shows the jumping-out part of this unfinished part after forging when the side of the part is machined and the burr 2d is removed.
部品の側面が鍛造されたままの状態で残り、そしてバリ2dが除去される場合の、鍛造後におけるこの未完成部品の跳ね出し部位を図8に示す。形成された圧潰部は、鍛造後における、跳ね出し部位およびそのバリ2eの良好な切断を可能にする。この跳ね出し部位は、バリとともに打撃の瞬間に締め付けられ、強制的に除去される。これは、この跳ね出し部位がバリとともに除去されることを意味する。 FIG. 8 shows a jumping-out portion of the unfinished part after forging when the side surface of the part remains forged and the burr 2d is removed. The formed crushing portion enables good cutting of the jump-out site and its burr 2e after forging. This jumping site is tightened together with the burr at the moment of impact and is forcibly removed. This means that this jumping site is removed together with the burrs.
アルミニウムあるいはアルミニウム合金製の部品を得るためのCOBAPRESS(商標)製法の実施にあたり、このようにして与えられる解決法は製法の信頼性を高める。鋳造の際に形成されるエゼクタインパクトマークに関する問題と結びついた潜在的な危険、すなわち鍛造部品に問題を発生させ、そして破損のきっかけとなるような問題は存在しない。 In carrying out the COBAPRESS (TM) process for obtaining parts made of aluminum or aluminum alloys, the solution thus provided increases the reliability of the process. There are no potential hazards associated with problems with ejector impact marks formed during casting, i.e. problems that cause problems in the forged parts and trigger breakage.
2 未完成部品
2a 周側面のへり
2b 突出部位
2c スラストコンタクトを受ける面
2d バリ
2e バリ
2
Claims (3)
未完成の前記部品の周側面のへり(2a)に沿って、応力を受けない領域に、未完成の前記部品を型から離脱させるためのエゼクタを受け止める部位を、鋳造段階において、立設しておくとともに、
鍛造段階では、前記型から未完成の前記部品の取り出しを可能にする前記部位(2b)が鍛造部品のバリとなるように鍛造し、該バリとなるように鍛造された部位(2b)を、鍛造段階の後に、バリとして切断し、取り除くことを特徴とする部品取り出し方法。 A method for removing a part obtained by casting a part made of aluminum or an aluminum alloy and then forging ,
Along the unfinished edge of the peripheral side surface of the component (2a), in a region not subjected to stress, the portion for receiving the error injector for disengaging from the mold unfinished the component, in the casting step, erected As well as
The forging step, the site (2b) is forged so that the burr of the forged component to allow removal of unfinished the part from the mold, forged parts such that the burr (2b), A method of taking out a part, which is cut and removed as a burr after the forging step .
Priority Applications (1)
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JP2003359828A JP4969766B2 (en) | 2003-10-20 | 2003-10-20 | How to remove parts |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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JP2003359828A JP4969766B2 (en) | 2003-10-20 | 2003-10-20 | How to remove parts |
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Publication Number | Publication Date |
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JP2005118858A JP2005118858A (en) | 2005-05-12 |
JP4969766B2 true JP4969766B2 (en) | 2012-07-04 |
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JP2003359828A Expired - Lifetime JP4969766B2 (en) | 2003-10-20 | 2003-10-20 | How to remove parts |
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Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6012010B2 (en) * | 1983-01-24 | 1985-03-29 | 株式会社 ロピア | Method for manufacturing bean confectionery containing multiple beans |
JPS60244439A (en) * | 1984-05-16 | 1985-12-04 | Daido Steel Co Ltd | Taking-out device of forged goods |
JPS60250839A (en) * | 1984-05-26 | 1985-12-11 | Daido Steel Co Ltd | Taking out device for forging |
JPS60250840A (en) * | 1984-05-28 | 1985-12-11 | Daido Steel Co Ltd | Taking out device for forging |
JPS645635A (en) * | 1987-06-26 | 1989-01-10 | Mazda Motor | Knockout method in forging die |
JPH02138037A (en) * | 1988-11-18 | 1990-05-28 | Somar Corp | Substrate conveying device |
JPH0385143A (en) * | 1989-08-29 | 1991-04-10 | Mitsubishi Electric Corp | Pick-up apparatus for magnetic resonance image |
JPH046338A (en) * | 1990-04-25 | 1992-01-10 | Hitachi Ltd | Multi-air conditioner |
JPH04210840A (en) * | 1990-12-13 | 1992-07-31 | Honda Motor Co Ltd | Method for forging spiral gear or the like |
JP2761124B2 (en) * | 1991-06-25 | 1998-06-04 | 日産自動車株式会社 | Crankshaft forging equipment |
JPH06190487A (en) * | 1992-12-22 | 1994-07-12 | Mazda Motor Corp | Forging method |
JP3156506B2 (en) * | 1994-07-12 | 2001-04-16 | 日産自動車株式会社 | Reverse transfer method of forged product, forging die and press machine used in the method |
JP3240850B2 (en) * | 1994-08-31 | 2001-12-25 | 日産自動車株式会社 | Forging die and knockout pin for the die |
JP2001342524A (en) * | 2000-03-31 | 2001-12-14 | Hoei Kogyo Kk | Recycling equipment for forming materials and recycling process of the same |
JP3807213B2 (en) * | 2000-09-25 | 2006-08-09 | 日産自動車株式会社 | Transfer type conveyor for forging press |
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2003
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Free format text: JAPANESE INTERMEDIATE CODE: R250 |
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EXPY | Cancellation because of completion of term |