JP2710923B2 - Manufacturing method of cylindrical member having notch in end face - Google Patents
Manufacturing method of cylindrical member having notch in end faceInfo
- Publication number
- JP2710923B2 JP2710923B2 JP1011296A JP1011296A JP2710923B2 JP 2710923 B2 JP2710923 B2 JP 2710923B2 JP 1011296 A JP1011296 A JP 1011296A JP 1011296 A JP1011296 A JP 1011296A JP 2710923 B2 JP2710923 B2 JP 2710923B2
- Authority
- JP
- Japan
- Prior art keywords
- blank
- hole
- face
- notch
- insert
- 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 - Fee Related
Links
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- Forging (AREA)
Description
【０００１】[0001]
【発明の属する分野】本発明は、端部に切欠を有する筒
体の製法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a cylindrical body having a notch at an end.
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】従来、
図９に示す如く、筒体の一端に４つの切欠(４)を等間隔
に開設した筒部材(１)が、自動車部分の１つとして製造
されている。上記筒部材(１)は、長尺の管体を筒部材
(１)の長さに切断し、切削加工によって切欠(４)を加工
している。2. Description of the Related Art
As shown in FIG. 9, a tubular member (1) having four notches (4) at one end of the tubular body at equal intervals is manufactured as one of the automobile parts. The above-mentioned tubular member (1) is formed by connecting a long tubular body to a tubular member.
(1) It is cut to the length and the notch (4) is machined by cutting.
【０００３】上記の場合、切断と切削は別工程で、別個
の装置で行なわねばならず、又、フライス盤による切削
加工は、直径線上の２箇所の切欠を加工した後、ワーク
のクランプを解除して９０°反転させ、再度クランプを
して再び切削を行なわねばならず、加工能率が極めて悪
い問題があった。また、切削面の返りを除去せねば、筒
部材(１)を素手で取り扱った際に、負傷する危険があ
る。本発明は、中実ブランクを鍛造・圧造成形して、端
部に切欠を有する筒体を形成することにより、上記問題
を解決するものである。[0003] In the above case, cutting and cutting must be performed in separate processes and in separate devices. In the case of cutting with a milling machine, after clamping two notches on the diameter line, the work clamp is released. In this case, the workpiece must be turned over by 90 °, clamped again, and cut again, resulting in a problem of extremely low machining efficiency. Further, if the return of the cut surface is not removed, there is a risk of injury when handling the tubular member (1) with bare hands. The present invention solves the above problem by forging and forging a solid blank to form a cylindrical body having a notch at an end.
【０００４】[0004]
【問題を解決する手段】本発明の筒部材の製法は、円柱
状のブランクを複数の金型に順に送り込んで、鍛造・圧
造して端面に切欠を有する筒部材を形成する方法であっ
て、円柱状ブランクの一端にパンチ(71)を打込んで穴(3
1)を形成すると共に該穴の容積に対応してブランクの全
長を長くし、後の工程で、ブランクの両端にパンチ(73)
及びインサートピン(５)を打込み、パンチ(73)によって
浅穴(32)を形成し、インサートピン(５)によって前記ブ
ランクの穴(31)を深くし、該穴(31)が深くなった穴容積
の増加分と、新しい浅穴(32)の容積に対応してブランク
を長くし、後の工程で、金型の奥に待機しブランクの穴
(31)に嵌まるガイド部(62)を有し、形成すべき筒部材
(１)の端面の切欠(４)の幅及び深さに対応する突起(63)
をガイド部(62)の回りに等間隔に且つガイド部(62)より
も低く位置して有するインサート工具(６)にブランクを
突き込んで、インサート工具(６)の突起(63)をブランク
端面に食込ませ、食込みによって排除されたブランクの
肉(10)をブランクの中心側に張り出させ、後の工程で、
ブランクの穴に孔抜きパンチ(76)を打込んで、前記中心
側に張り出した肉(10)と、深穴と浅穴の共通の穴底(30)
を打抜き排除して端面に切欠(４)を有する筒部材を形成
する。A method of manufacturing a cylindrical member according to the present invention is a method of forming a cylindrical member having a notch at an end face by sequentially feeding a columnar blank into a plurality of molds and forging and forging. Insert a punch (71) into one end of the cylindrical blank to insert a hole (3
Forming 1) and increasing the total length of the blank corresponding to the volume of the hole, and punching (73) on both ends of the blank in a later step.
And, the insert pin (5) is driven, a shallow hole (32) is formed by the punch (73), the hole (31) of the blank is deepened by the insert pin (5), and the hole (31) is deepened. Make the blank longer according to the increase in volume and the volume of the new shallow hole (32).
A tubular member to be formed having a guide portion (62) that fits into the (31)
A projection (63) corresponding to the width and depth of the notch (4) in the end face of (1)
The blank is inserted into the insert tool (6), which is provided at equal intervals around the guide portion (62) and lower than the guide portion (62), and the protrusion (63) of the insert tool (6) is inserted into the blank end face. And the blank meat (10) removed by the bite is extended to the center side of the blank, and in a later step,
A punch (76) is punched into the hole of the blank, and the meat (10) that protrudes to the center side and a common hole bottom (30) of a deep hole and a shallow hole
Is punched out to form a cylindrical member having a notch (4) on the end face.
【０００５】[0005]
【作用及び効果】円柱状のブランクを、鍛造・圧造によ
り、徐々に塑性変形させて筒状製品を製造するため、線
材の剪断から孔抜きまでを、複数の金型に順次送りこん
で、徐々に目的の形状に塑性変形させる横型トランスフ
ァープレスを用いて実施でき、従来の切断とフライス加
工による方法とは比較にならないほど製造能率は向上す
る。鍛造・圧造加工であるから、線材の剪断端縁は加圧
矯正して面取りを行なうことができ、切断と切削による
場合の様な、切断縁、切削縁の返りの処理に掛る手間と
時間を省略でき、製造能率を一層向上できる。[Operation and effect] In order to produce a cylindrical product by gradually plastically deforming a cylindrical blank by forging and forging, the process from shearing to drilling of the wire rod is sequentially sent to a plurality of dies, and gradually It can be carried out using a horizontal transfer press that plastically deforms to the desired shape, and the production efficiency is improved to a degree that is incomparable with conventional cutting and milling methods. Because it is forging and forging, the shearing edge of the wire can be chamfered by correcting the pressure under pressure, and the time and effort required to process the return of the cutting edge and the cutting edge as in the case of cutting and cutting are reduced. It can be omitted, and the production efficiency can be further improved.
【０００６】[0006]
【発明の実施の態様】図１は、端面に切欠を有する筒部
材の製造工程の説明図である。実施例では、No.１〜No.
５の５工程で鍛造・圧造を行なう横型トランスファープ
レスによって実施した。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an explanatory view of a manufacturing process of a tubular member having a notch at an end face. In the embodiment, No. 1 to No.
This was performed by a horizontal transfer press in which forging and forging were performed in five steps (5).
【０００７】横型トランスファープレスは、公知の如
く、固定ダイブロック(８)に対向して接近離間可能にラ
ム(図示せず)を設け、ダイブロック(８)内に、No.１〜N
o.５の金型(図示せず)を横一列に等間隔に配備し、各金
型に対向してラムにはパンチ(７)(71)(72)(73)(74)を配
備している。As is well known, a horizontal transfer press is provided with a ram (not shown) facing the fixed die block (8) so as to be able to approach and separate from the fixed die block (8).
o.5 dies (not shown) are arranged at equal intervals in a horizontal line, and punches (7), (71), (72), (73), and (74) are provided on the ram, facing each of the dies. ing.
【０００８】No.１の金型の前段にて、線材を所定の寸
法に自動的に剪断し、剪断されたブランクをラムの一往
復毎に、トランスファー装置によってブランクを順次次
の工程に移送し、パンチ(７)(71)(72)(74)(75)によって
ブランクを金型内に突き込み、このパンチ(７)(71)(72)
(73)(74)の打込みと、金型内に固定配備されたNo.３イ
ンサートピン(73)、No.４インサート工具(６)及びNo.５
孔抜きインサートピン(９)の働きによって、ブランクを
徐々に塑性変形させ所望の形状に成形するものである。At the front stage of the No. 1 mold, the wire is automatically sheared to a predetermined size, and the sheared blank is sequentially transferred to the next step by the transfer device every one reciprocation of the ram. The blank is pushed into the mold by the punch (7) (71) (72) (74) (75), and the punch (7) (71) (72)
(73) Insertion of (74) and No. 3 insert pin (73), No. 4 insert tool (6) and No. 5 fixedly arranged in the mold
The blank is gradually plastically deformed and formed into a desired shape by the function of the punching insert pin (9).
【０００９】No.１の工程では、No.１パンチ(７)の打込
みにより、金型の奥で、No.１ブランク(11)の外周縁を
矯正して面取り部(２)を形成する。In the No. 1 step, the outer peripheral edge of the No. 1 blank (11) is corrected at the back of the mold by driving the No. 1 punch (7) to form a chamfered portion (2).
【００１０】No.２の工程では、No.１の工程で面取り部
(２)を形成したブランクを180°反転して、金型に送り
込み、No.２パンチ(71)の突込みによって、No.２ブラン
ク(12)のラム側に深穴(31)を形成する。[0010] In the No. 2 process, the chamfered portion is used in the No. 1 process.
The blank on which (2) has been formed is turned 180 °, fed into a mold, and a deep hole (31) is formed on the ram side of the No. 2 blank (12) by the insertion of a No. 2 punch (71).
【００１１】No.３の工程では、No.２の工程で深穴(31)
を形成したブランクを180°反転してNo.３パンチ(72)よ
り金型内に突き込み、該金型内の定位置で待機している
No.３インサートピン(５)により、深穴(31)を一層深く
すると共に、パンチ(72)の先端の食込みによる浅穴(32)
を形成する。In the No. 3 process, the deep hole (31) was used in the No. 2 process.
The blank on which is formed is inverted by 180 ° and thrust into the mold from the No. 3 punch (72), and stands by at a fixed position in the mold.
The deep hole (31) is further deepened by the No. 3 insert pin (5), and the shallow hole (32) is formed by cutting the tip of the punch (72).
To form
【００１２】No.４の工程では、No.パンチ(73)による金
型へのブランク(14)の突き込みにより、金型の奥に固定
状態に位置するインサート工具(６)により、ブランク(1
4)の深穴(31)側の筒壁端面の複数箇所の肉をブランク(1
4)の内側に張り出させて、肉の逃げた部分に切欠(４)を
形成する。又、No.４パンチ(73)の打込みによって、深
穴(31)と浅穴(32)の共通の穴底(30)をインサート工具
(６)側にずらせる。これは、次のNo.５の工程での孔抜
きの際に、孔底を美しく抜くための公知の手法である。In the process of No. 4, the blank (1) is inserted into the mold by the No. punch (73), and the blank (1) is inserted by the insert tool (6) located in a fixed state at the back of the mold.
Blank the meat at multiple locations on the end face of the cylinder wall on the side of the deep hole (31) in (4).
Form a notch (4) in the part where the meat escaped by projecting inside of (4). Also, by inserting the No. 4 punch (73), the common hole bottom (30) of the deep hole (31) and the shallow hole (32) is inserted with an insert tool.
(6) Move to the side. This is a known method for beautifully removing the bottom of the hole at the time of removing the hole in the next No. 5 step.
【００１３】本発明の最大の特徴は、上記No.４工程で
のインサート工具(６)によるブランク(14)端面への切欠
(４)の形成であり、該インサート工具(６)について、図
２乃至図５に基づいて詳述する。インサート工具(６)
は、No.４ブランク(14)の外径に等しい直径の丸軸部(6
1)の基端にフランジ(60)を突設し、丸軸部(61)の先端面
の中央にNo.４ブランク(14)の内径に等しい短い丸軸状
のガイド部(62)を突設している。The most important feature of the present invention is that the insert tool (6) in the above No. 4 process has a notch in the end face of the blank (14).
This is the formation of (4), and the insert tool (6) will be described in detail with reference to FIGS. Insert tool (6)
Is a round shaft (6) having a diameter equal to the outer diameter of the No. 4 blank (14).
A flange (60) is protruded from the base end of (1), and a short round shaft-shaped guide (62) equal to the inner diameter of the No. 4 blank (14) is protruded at the center of the distal end surface of the round shaft (61). Has been established.
【００１４】丸軸部(61)の先端側外周部に等間隔に４つ
の突起(63)を前記ガイド部(62)の周面及び丸軸部(61)の
周面に連続して形成する。突起(63)の幅長さｌ1は、形
成すべき筒部材(１)の切欠(４)の幅に一致し、突起(63)
の高さｈ1は切欠(４)の幅に一致している。周方向に隣
合う突起(63)(63)の間に、丸軸部(61)を軸芯と平行に貫
通してガイド孔(66)が開設され、該ガイド孔(66)にNo.
３ブランク(13)を金型から突出す突出しピン(100)がス
ライド可能に嵌まる。Four projections (63) are formed on the outer peripheral portion on the distal end side of the round shaft portion (61) at regular intervals on the peripheral surface of the guide portion (62) and the peripheral surface of the round shaft portion (61). . The width l 1 of the projection (63) matches the width of the notch (4) of the tubular member (1) to be formed, and the projection (63)
Height h 1 are matched to the width of the notch (4). A guide hole (66) is formed between the protrusions (63) and (63) adjacent in the circumferential direction, penetrating the round shaft portion (61) in parallel with the axis, and a guide hole (66) is formed in the guide hole (66).
3 A protrusion pin (100) for projecting the blank (13) from the mold is slidably fitted.
【００１５】ガイド部(62)の先端面には十字状の浅溝(6
4)が開設され、溝の４つの外端は各突起(63)側に開口
し、溝の開口幅は突起(63)の幅よりも少し大きく、溝幅
の中心は突起(63)の幅に一致している。各突起(63)の頂
面高さは、浅溝(64)の溝底よりも少し低くなって、溝底
と突起(63)との間は段差(67)が形成されている。ガイド
部(62)の軸芯には、エアー抜貫通孔(65)が開設されてい
る。A cross-shaped shallow groove (6
4) is opened, the four outer ends of the groove open to the side of each protrusion (63), the opening width of the groove is slightly larger than the width of the protrusion (63), and the center of the groove width is the width of the protrusion (63) Matches. The top surface height of each projection (63) is slightly lower than the groove bottom of the shallow groove (64), and a step (67) is formed between the groove bottom and the projection (63). An air vent through hole (65) is formed in the axis of the guide portion (62).
【００１６】上記インサート工具(６)のガイド部(62)の
先端面、突起(63)の表面には、化学蒸着或いは物理蒸着
によって、ＴｉＣ、ＴｉＣＮの耐焼付き層を形成してい
る。A seizure-resistant layer of TiC or TiCN is formed on the tip surface of the guide portion (62) of the insert tool (6) and on the surface of the projection (63) by chemical vapor deposition or physical vapor deposition.
【００１７】図２に示す如く、上記インサート工具(６)
をNo.４の筒状金型(101)の奥にセットする。インサート
工具(６)の丸軸部(61)が金型(101)の孔(102)に緊密に嵌
まり、フランジ(60)が金型の端面に当接している。イン
サート工具(６)のガイド孔(66)に突出しピン(100)がス
ライド可能に嵌まる。As shown in FIG. 2, the insert tool (6)
Is set at the back of the No. 4 cylindrical mold (101). The round shaft portion (61) of the insert tool (6) is tightly fitted into the hole (102) of the mold (101), and the flange (60) is in contact with the end face of the mold. The protruding pin (100) is slidably fitted in the guide hole (66) of the insert tool (6).
【００１８】No.３の工程で、ラム側に浅穴(32)、反対
側に深穴(31)を形成したブランク(13)を、反転させずに
No.４の位置に移送し、No.４パンチ（73）で金型(101)
に突き込む。No.４ブランク(14)の奥端にインサート工
具(６)のガイド部(62)が嵌まり、ブランクの筒壁に突起
(63)が食込む。In the process of No. 3, the blank (13) having the shallow hole (32) formed on the ram side and the deep hole (31) formed on the opposite side is not inverted.
Transfer to No.4 position, die (101) with No.4 punch (73)
Thrust into. The guide part (62) of the insert tool (6) fits into the back end of the No. 4 blank (14), and the protrusion protrudes from the cylindrical wall of the blank.
(63) bites.
【００１９】突起(63)が食込んだ部分は切欠(４)とな
り、該切欠(４)部に存在していた肉は、金型(101)の存
在によって内側にのみ逃げることが出来、インサート工
具(６)の浅溝(64)側及び該浅溝(64)の両側に張り出し
て、図６、図７、図８に示す様な張出し部(10)を形成す
る。張出し部(10)は、インサート工具(６)の浅溝(64)と
突起(63)の段差(64)に対応して、切欠(４)の底よりも少
し低い位置から内側に略円弧状に張り出し、上面は浅溝
(64)とガイド部(62)の頂面の段差(64)と対称的な凹凸が
形成され、下面は、張出し部の円弧状外周縁へ徐々に薄
肉となる様に球面状に膨らんでいる。The portion cut by the projection (63) becomes a notch (4), and the meat existing in the notch (4) can escape only inside due to the presence of the mold (101). The projecting portion (10) as shown in FIGS. 6, 7, and 8 is formed by projecting on the shallow groove (64) side of the tool (6) and on both sides of the shallow groove (64). The overhang portion (10) corresponds to the shallow groove (64) of the insert tool (6) and the step (64) of the protrusion (63), and has a substantially arc shape inside from a position slightly lower than the bottom of the notch (4). With a shallow groove on the top
(64) and the step (64) of the top surface of the guide portion (62) are formed symmetrical irregularities, and the lower surface is bulged in a spherical shape so as to become gradually thinner toward the arc-shaped outer peripheral edge of the overhang portion. .
【００２０】ここで、張出し部(10)の上面と、切欠(４)
の底面との間に段差(40)が形成されていることが、次の
No.５の孔抜き工程で、張出し部(10)を剪断除去する際
の重要なポイントとなる。上記切欠(４)と内向き張出し
部(10)を有するブランクをNo.５の位置に移送し、No.５
筒状パンチ(74)で金型に突き込む。金型の軸芯には孔抜
きインサートピン(９)が先端をダイブロック(８)の前面
近くに位置させて待機している。孔抜きインサートピン
(９)の先端の直径はブランクの内径に一致している。Here, the upper surface of the overhang portion (10) and the notch (4)
The step (40) is formed between the bottom and
This is an important point when the overhang portion (10) is removed by shearing in the hole punching process of No. 5. The blank having the notch (4) and the inwardly extending portion (10) was transferred to the position of No. 5,
Push into the mold with the cylindrical punch (74). A hole-inserting insert pin (9) is located on the axis of the mold and stands by with its tip positioned near the front surface of the die block (8). Hole Insert Pin
The diameter of the tip of (9) matches the inner diameter of the blank.
【００２１】No.５パンチ(74)は、ブランクの外径及び
肉厚の筒状に形成されており、該パンチ(74)でブランク
を金型に打込むと、ブランク内に孔抜きインサートピン
(９）が突き込まれ、ブランクの内面に突出した張出し
部（１０）及び穴底(30)を、ブランクとの境目から剪断
して、No.５筒状パンチ(74)内に叩き出す。The No. 5 punch (74) is formed in a cylindrical shape having an outer diameter and a wall thickness of the blank. When the blank is punched into a mold by the punch (74), a punching insert pin is inserted into the blank.
(9) is inserted, and the overhanging portion (10) and the hole bottom (30) projecting from the inner surface of the blank are sheared from the boundary with the blank and beaten into a No. 5 cylindrical punch (74).
【００２２】張出し部(10)は、切欠(４)の底面とは同じ
高さで連続しておらず、切欠(４)の底面よりも低くなっ
て段差(40)があるので、張出し部(10)をブランクの筒壁
との境界部で剪断して打抜く際、切欠(４)の底部の肉に
影響を与えることなく、美しく打抜きできる。張出し部
(10)の上面が切欠(４)の底面とは同じ高さで連続して場
合、張出し部(10)の剪断打抜きの際に、切欠(４)の底部
が引っ張られて変形して商品価値を損うことは、確認済
みである。The overhang portion (10) is not continuous at the same height as the bottom surface of the notch (4), and is lower than the bottom surface of the notch (4) and has a step (40). When cutting 10) by shearing at the boundary with the blank cylindrical wall, the blank can be beautifully punched without affecting the bottom meat of the notch (4). Overhang
If the upper surface of (10) is continuous at the same height as the bottom surface of notch (4), the bottom of notch (4) is pulled and deformed during shearing punching of overhang (10), resulting in a commercial value. Has been confirmed to impair.
【００２３】穴底(30)とブランク筒壁の境界部は、前記
No.４の工程で穴底(30)の位置をずらしてあることによ
り、半ば剪断されているために、穴底(30)は筒壁との境
界に沿ってきれいに打抜くことができる。上記の工程を
経て、図９に示す如く、一端に切欠(４)を有する筒部材
(１)を製造できる。ラムの一往復毎に１個の製品を排出
でき、然も後加工を必要としないため、従来の切断とフ
ライス加工による方法とは比較にならないほど製造能率
は向上する。The boundary between the hole bottom (30) and the blank cylinder wall is
By shifting the position of the hole bottom (30) in the process of No. 4, since the hole bottom (30) is partially sheared, the hole bottom (30) can be punched neatly along the boundary with the cylindrical wall. Through the above steps, as shown in FIG. 9, a cylindrical member having a notch (4) at one end.
(1) can be manufactured. One product can be discharged for each reciprocation of the ram, and no post-processing is required, so that the production efficiency is improved to be incomparable with the conventional cutting and milling method.
【００２４】本発明の実施に際し、No.１の工程からNo.
２の工程にブランクを移送する際、実施例の様に、１８
０°反転させずに、No.２からブランクを突出したまま
の姿勢で、No.３へ移送して、後の工程を行なうことも
できる。この場合、No.２で、ブランクに対してラム側
の端縁の矯正はできないが、最終製品としては、問題は
ない。本発明は、上記実施例の構成に限定されることは
なく、特許請求の範囲に記載の範囲で種々の変形が可能
である。In carrying out the present invention, the steps from No. 1 to No. 1
When transferring the blank to the second step, as in the embodiment, 18
It is also possible to transfer the blank to No. 3 in a posture in which the blank protrudes from No. 2 without inverting it by 0 °, and perform the subsequent process. In this case, in No. 2, the ram side edge cannot be corrected with respect to the blank, but there is no problem as a final product. The present invention is not limited to the configuration of the above embodiment, and various modifications are possible within the scope of the claims.
【図１】圧造工程図である。FIG. 1 is a drawing process diagram.
【図２】No.４の圧造工程での金型装置断面図である。FIG. 2 is a sectional view of a mold apparatus in a No. 4 forging process.
【図３】インサート工具の斜面図である。FIG. 3 is a perspective view of an insert tool.
【図４】インサート工具の平面図である。FIG. 4 is a plan view of the insert tool.
【図５】インサート工具の一部を断面で表した正面図で
ある。FIG. 5 is a front view showing a part of the insert tool in cross section.
【図６】No.４工程を終えたブランクの要部斜面図であ
る。FIG. 6 is a perspective view of a relevant part of a blank after a No. 4 step.
【図７】同上ブランクの平面図である。FIG. 7 is a plan view of the blank.
【図８】同上ブランクの断面図である。FIG. 8 is a sectional view of the blank.
【図９】先端に切欠きを有する筒部材の斜面図である。FIG. 9 is a perspective view of a cylindrical member having a notch at the tip.
(１) 筒部材 (10) 張出し部 (４) 切欠 (５) No.３インサートピン (６) インサート工具 (61) 丸軸部 (62) ガイド部 (63) 突起 (64) 浅溝 (1) Tube member (10) Overhang (4) Notch (5) No. 3 insert pin (6) Insert tool (61) Round shaft (62) Guide (63) Projection (64) Shallow groove
Claims (2)
り込んで、鍛造・圧造して端面に切欠を有する筒部材を
形成する方法であって、円柱状ブランクの一端にパンチ
(71)を打込んで穴(31)を形成すると共に該穴の容積に対
応してブランクの全長を長くし、 後の工程で、ブランクの両端にパンチ(73)及びインサー
トピン(５)を打込み、パンチ(73)によって浅穴(32)を形
成し、インサートピン(５)によって前記ブランクの穴(3
1)を深くし、該穴(31)が深くなった穴容積の増加分と、
新しい浅穴(32)の容積に対応してブランクを長くし、 後の工程で、金型の奥に待機しブランクの穴(31)に嵌ま
るガイド部(62)を有し、形成すべき筒部材(１)の端面の
切欠(４)の幅及び深さに対応する突起(63)をガイド部(6
2)の回りに等間隔に且つガイド部(62)よりも低く位置し
て有するインサート工具(６)にブランクを突き込んで、
インサート工具(６)の突起(63)をブランク端面に食込ま
せ、食込みによって排除されたブランクの肉(10)をブラ
ンクの中心側に張り出させ、 後の工程で、ブランクの穴に孔抜きパンチ(76)を打込ん
で、前記中心側に張り出した肉(10)と、深穴と浅穴の共
通の穴底(30)を打抜き排除して端面に切欠(４)を有する
筒部材を形成する方法。1. A method of forming a cylindrical member having a notch in an end face by sequentially feeding a columnar blank into a plurality of molds and forging and forging, and punching one end of the columnar blank.
(71) is punched to form a hole (31), and the total length of the blank is increased corresponding to the volume of the hole. In a later step, a punch (73) and an insert pin (5) are attached to both ends of the blank. A shallow hole (32) is formed by driving and punching (73), and a hole (3) of the blank is formed by an insert pin (5).
1) is deepened, and the hole (31) has an increased hole volume,
The blank should be lengthened to accommodate the volume of the new shallow hole (32), and in a later step, it should be formed at the back of the mold with a guide (62) that fits into the hole (31) of the blank. Insert the protrusion (63) corresponding to the width and depth of the notch (4) in the end face of the cylindrical member (1) into the guide portion (6).
The blank is pierced into an insert tool (6) having an even space around 2) and located lower than the guide portion (62),
The protrusion (63) of the insert tool (6) is cut into the end face of the blank, and the blank (10) removed by the cut is protruded toward the center of the blank. In a later step, a hole is punched in the hole of the blank. A cylindrical member having a cutout (4) at the end face by punching out a punch (76) to remove the flesh (10) projecting to the center side and a common hole bottom (30) of a deep hole and a shallow hole is eliminated. How to form.
に略一致する外径の丸軸部(61)の端面中央にガイド部(6
2)を突出し、丸軸部(61)の端面外周部に突起(63)を有
し、ガイド部(62)の端面には突起(63)からガイド部の中
心に向い突起より少し幅狭の浅溝(64)が開設され、該浅
溝(64)よりも突起(63)の頂面は少し低く形成され、周方
向に隣合う突起(63)(63)間に、インサート工具(６)の軸
芯に平行にブランク排出ピン(９)がスライド可能に貫通
している請求項１に記載の端面に切欠を有する筒部材の
製法。2. An insert tool (6) has a guide portion (6) at the center of the end face of a round shaft portion (61) having an outer diameter substantially matching the outer diameter of the blank.
2), the protrusion (63) is provided on the outer peripheral portion of the end face of the round shaft portion (61), and the end face of the guide portion (62) is slightly narrower than the protrusion from the protrusion (63) toward the center of the guide portion. A shallow groove (64) is opened, the top surface of the projection (63) is formed slightly lower than the shallow groove (64), and an insert tool (6) is provided between the circumferentially adjacent projections (63) (63). 2. The method according to claim 1, wherein the blank discharge pin (9) is slidably penetrated in parallel with the axis of the cylinder member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1011296A JP2710923B2 (en) | 1996-01-24 | 1996-01-24 | Manufacturing method of cylindrical member having notch in end face |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1011296A JP2710923B2 (en) | 1996-01-24 | 1996-01-24 | Manufacturing method of cylindrical member having notch in end face |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09201645A JPH09201645A (en) | 1997-08-05 |
| JP2710923B2 true JP2710923B2 (en) | 1998-02-10 |
Family
ID=11741239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1011296A Expired - Fee Related JP2710923B2 (en) | 1996-01-24 | 1996-01-24 | Manufacturing method of cylindrical member having notch in end face |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2710923B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100384565C (en) * | 2006-05-18 | 2008-04-30 | 西南铝业（集团）有限责任公司 | Method for preventing complex profile die forging from generating misplacement |
| JP5720242B2 (en) * | 2010-03-24 | 2015-05-20 | 株式会社豊田中央研究所 | Drilling method using swing forging method |
-
1996
- 1996-01-24 JP JP1011296A patent/JP2710923B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09201645A (en) | 1997-08-05 |
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