JPS622890B2 - - Google Patents
Info
- Publication number
- JPS622890B2 JPS622890B2 JP12002079A JP12002079A JPS622890B2 JP S622890 B2 JPS622890 B2 JP S622890B2 JP 12002079 A JP12002079 A JP 12002079A JP 12002079 A JP12002079 A JP 12002079A JP S622890 B2 JPS622890 B2 JP S622890B2
- Authority
- JP
- Japan
- Prior art keywords
- die
- mandrel
- center hole
- solid material
- extrusion
- 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
Links
- 239000000463 material Substances 0.000 claims description 57
- 238000001125 extrusion Methods 0.000 claims description 25
- 239000011343 solid material Substances 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 18
- 238000012545 processing Methods 0.000 claims description 15
- 238000005520 cutting process Methods 0.000 claims description 5
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 238000003672 processing method Methods 0.000 claims description 3
- 235000012438 extruded product Nutrition 0.000 description 5
- 238000003754 machining Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 101000803685 Homo sapiens Vacuolar protein sorting-associated protein 4A Proteins 0.000 description 1
- 101000803689 Homo sapiens Vacuolar protein sorting-associated protein 4B Proteins 0.000 description 1
- 229910001315 Tool steel Inorganic materials 0.000 description 1
- 102100035085 Vacuolar protein sorting-associated protein 4A Human genes 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/28—Making machine elements wheels; discs
- B21K1/30—Making machine elements wheels; discs with gear-teeth
-
- 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
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/10—Piercing billets
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Of Metal (AREA)
- Forging (AREA)
Description
【発明の詳細な説明】
本発明は歯車類の押出し加工方法及び装置に関
する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for extruding gears.
歯車等のチツプレス加工について、歯切工数の
低減と品質向上の面から種々検討が進められてい
る。これは世界的すう勢である。 Regarding chip press processing of gears, etc., various studies are being carried out with a view to reducing the number of man-hours required for gear cutting and improving quality. This is a worldwide trend.
例えば、自動車のトランスミツシヨンに使用し
ているヘリカルギヤの製法として米国特許U.S.
P3910091が発明されている。 For example, a US patent has been granted for the manufacturing method of helical gears used in automobile transmissions.
P3910091 has been invented.
その装置の概略構造は第１図に示す如く、内側
にダイス刃面０１を具えたダイス０２、ダイス０
２の上面に設けたコンテナ０３、これらを囲む補
強リング０４、マンドレル０５及びこれに相対移
動可能に嵌め込まれているスリーブ０６等からな
つており、その歯車成形作用は次の通りである。 The schematic structure of the device is as shown in Fig. 1, a die 02 with a die blade surface 01 inside,
2, a reinforcing ring 04 surrounding these, a mandrel 05, and a sleeve 06 fitted into the mandrel so as to be relatively movable.The gear forming operation is as follows.
(i) 円筒素材０７ａをダイス０２に投入する。(i) Throw the cylindrical material 07a into the die 02.
(ii) スリーブ０６、マンドレル０５を下降させマ
ンドレル０５を円筒素材０７ａの中心軸穴０８
に嵌め込み、そのままスリーブ０６でスリーブ
０６がダイス刃面０１近くになるまで押し込
む。(ii) Lower the sleeve 06 and the mandrel 05 and insert the mandrel 05 into the center shaft hole 08 of the cylindrical material 07a.
, and push it in with the sleeve 06 until the sleeve 06 comes close to the die blade surface 01.
(iii) この後、マンドレル０５を押し出し中の素材
０７ｂから抜き出し、スリーブ０６、マンドレ
ル０５と共に後退させる。(iii) After this, the mandrel 05 is pulled out from the material 07b that is being extruded and is moved back together with the sleeve 06 and the mandrel 05.
(iv) 新しい円筒素材０７ａをダイス０２内に供給
する。(iv) A new cylindrical material 07a is fed into the die 02.
(v) (ii)の場合と同様にマンドレル０５を新しい円
筒素材０７ａの内部に通し、円筒素材０７ａを
押し出し中の素材０７ｂの途中まで再度押し込
む。(v) As in case (ii), pass the mandrel 05 through the inside of the new cylindrical material 07a and push the cylindrical material 07a halfway into the material 07b that is being extruded again.
(vi) この後、スリーブ０６で円筒素材０７ａを押
付け、押し出し中の素材０７ｂをダイス０２外
に押し出して、ヘリカルギヤ０７ｃを得る。こ
の時、新しく供給した円筒素材０７ａは押し出
し中の素材０７ｂとなり、以後は順次以上の工
程を繰り返す。(vi) After this, the cylindrical material 07a is pressed with the sleeve 06, and the material 07b being extruded is pushed out of the die 02 to obtain a helical gear 07c. At this time, the newly supplied cylindrical material 07a becomes the material 07b that is being extruded, and thereafter the above steps are repeated one after another.
尚、このような方法を一般につぎ押しという。
上記方法の特徴をまとめると次のようになる。 Incidentally, such a method is generally referred to as splicing.
The characteristics of the above method can be summarized as follows.
円筒素材を使用する。 Use cylindrical material.
円筒素材が押出し工程中につぶれることを防
ぐためにマンドレルを用いる。 A mandrel is used to prevent the cylindrical material from collapsing during the extrusion process.
スリーブ、マンドレルが相対的に動きうるよ
う複動になつている。 It is double-acting so that the sleeve and mandrel can move relative to each other.
尚、この方法では素材（円筒素材）加工に切断
も含めて４工程を要しており、センタ決め、後方
押出し、穴あけの工程で同心度の良好な円筒素材
を加工している。このため押出し品の同心度が良
好（3/100）であるとの報告がある。 Note that this method requires four steps including cutting to process the material (cylindrical material), and the cylindrical material with good concentricity is processed in the centering, backward extrusion, and hole drilling steps. For this reason, it has been reported that the concentricity of the extruded product is good (3/100).
しかし、上記従来の方法には次のような欠点が
ある。 However, the above conventional method has the following drawbacks.
円筒素材加工に手間がかかる（切断を含めて４
工程）。スリーブ、マンドレルを相対的に動かす
必要から複動塑性加工機械が必要である。押出し
品の先端面は自由表面であり、仕上機械加工を必
要とする。 Cylindrical material processing is time consuming (including cutting)
process). A double-acting plastic processing machine is required because the sleeve and mandrel must be moved relative to each other. The leading edge of the extrusion is a free surface and requires finishing machining.
本発明は従来の押出し加工方法及び装置におけ
る以上のような欠点を解消し、簡単な工程で中空
部品を精度良く加工し得る方法及び装置を提供す
ることを目的としてなされたものである。 The present invention has been made to solve the above-mentioned drawbacks of conventional extrusion processing methods and devices, and to provide a method and device that can process hollow parts with high accuracy through simple steps.
そして上記目的を達成する本発明の一つの要旨
は、内側に成形用の刃を有すダイス内に鋭利な先
端を具え軸方向に可動となつているマンドレルを
位置させ、端面にセンタ穴をあけた中実素材をセ
ンタ穴のない中実素材を介して前記ダイス内に押
込んで先行の中実素材に前記刃と前記マンドレル
によつて外形加工と中心軸穴加工を同時に施すと
共に前記マンドレルの先端で後続の中実素材の端
面にセンタ穴を加工し、更に前記後続の素材を中
実素材を介して前記ダイス内に押込んで先行の素
材を外形加工と中心軸穴加工を施した製品として
前記ダイス外へ押出し、後続の素材には外形加工
と中心軸穴加工を同時に施し、この素材に続く前
記中実素材端面にはセンタ穴加工を施し、この後
前記マンドレルを後退させて前記製品から前記マ
ンドレルを抜出すことを特徴とする押出し加工方
法に存し、他の一つの要旨は、中実素材の外形を
成形する刃を内側に具えるダイスの製品の押出し
側に鋭利な先端を具え軸方向に可動となつている
マンドレルを前記ダイスに対し進退移動可能に設
けると共に前記ダイス内に素材を押込むポンチを
前記ダイスに対し進退移動可能に前記ダイスの素
材挿入側に設け、前記マンドレルの前記ダイス内
への進入位置では、前記ダイスの刃によつて外形
加工され且つ前記マンドレルによつて中心軸穴加
工される素材に後続する中実素材端面に前記マン
ドレル先端が貫入し、前記マンドレルの後退位置
では前記ダイスより押出された製品より前記マン
ドレルが抜出されるようにしたことを特徴とする
押出し加工装置に存する。 One gist of the present invention to achieve the above object is to position a mandrel with a sharp tip and movable in the axial direction in a die having a forming blade inside, and to drill a center hole in the end surface. The solid material without a center hole is pushed into the die through the solid material without a center hole, and the cutting edge and the mandrel simultaneously process the outer shape and center hole on the preceding solid material, and the tip of the mandrel is pressed into the die. A center hole is machined in the end face of the subsequent solid material, and the subsequent material is further pushed into the die through the solid material, and the preceding material is subjected to external shape processing and center hole processing. The material is extruded out of the die, and the subsequent material is subjected to external shape processing and center hole processing at the same time, and the end face of the solid material following this material is subjected to center hole processing.After this, the mandrel is retreated to remove the material from the product. The extrusion processing method is characterized by extracting a mandrel, and another gist is that the extrusion side of the die is equipped with a sharp tip on the extrusion side of the product, and the die is equipped with a blade on the inside to shape the external shape of the solid material. A mandrel movable in the direction is provided so as to be movable forward and backward with respect to the die, and a punch for pushing the material into the die is provided on the material insertion side of the die so as to be movable forward and backward with respect to the die, At the entry position into the die, the tip of the mandrel penetrates into the end face of the solid material following the material whose outer shape is processed by the die blade and the center hole is drilled by the mandrel, and the mandrel retreats. The extrusion processing apparatus is characterized in that the mandrel is extracted from the product extruded from the die at the position.
以下、本発明の一実施例を図面を参照して説明
する。 Hereinafter, one embodiment of the present invention will be described with reference to the drawings.
第２図には本発明による押出し装置の一実施例
の概略断面を示す。この装置は製品として歯車を
作る装置を示すが、本発明はダイス内側の形状を
変えることにより、スプライン、セレーシヨンな
ど円形或いは異形断面を有す種々の円筒状部品の
製造に適用可能である。 FIG. 2 shows a schematic cross section of an embodiment of an extrusion device according to the present invention. Although this device shows a device for manufacturing gears as a product, the present invention can be applied to manufacturing various cylindrical parts having circular or irregular cross sections such as splines and serrations by changing the shape of the inside of the die.
素材の外側に成形加工を施す刃（歯車状となつ
ている）１を内側に有すダイス２には素材を通す
孔３を有すコンテナ４が同心上に重ねられ、これ
らは補強リング５により締結されている。ダイス
２の製品押出し側には、鋭利な先端を具え軸方向
に可動となつているマンドレル６がダイス２に対
し進退移動可能に設けられている。マンドレル６
の後部には該マンドレル６に上下運動を付与する
マンドレル押棒７が締結治具８により取付けられ
ている。ダイス２の製品押出し側にはスペーサ９
を介して枠部材１０が設けられ、前記マンドレル
６はこの枠部材１０によつてその上限位置が定め
られる。ダイス２より押出されマンドレル６と分
離された製品を搬送するための突出し治具１１が
設けられている。コンテナ４の素材挿入側上方に
は素材をダイス２内に押込むためポンチ１２が前
記ダイス２に対し進退移動可能に設けられてい
る。 A container 4 having a hole 3 through which the material passes is stacked concentrically on a die 2 which has a blade (gear-shaped) 1 on the inside that performs a forming process on the outside of the material, and these are held together by a reinforcing ring 5. It has been concluded. On the product extrusion side of the die 2, a mandrel 6 having a sharp tip and movable in the axial direction is provided so as to be movable forward and backward relative to the die 2. mandrel 6
A mandrel push rod 7 for imparting vertical movement to the mandrel 6 is attached to the rear part of the mandrel 6 by a fastening jig 8. Spacer 9 is installed on the product extrusion side of die 2.
A frame member 10 is provided through the mandrel 6, and the upper limit position of the mandrel 6 is determined by this frame member 10. A protrusion jig 11 is provided for conveying the product extruded from the die 2 and separated from the mandrel 6. A punch 12 is provided above the material insertion side of the container 4 so as to be movable forward and backward relative to the die 2 in order to force the material into the die 2.
次にこの装置による歯車加工方法を説明する。 Next, a gear machining method using this device will be explained.
端面にセンタ穴１３をあけてある中実素材１４
ｂはコンテナ４及びダイス２内をポンチ１２によ
り前方に押出される。中実素材１４ｂはダイス２
内を通過する時に外周面に刃１によつて歯形部１
５の加工を受けると同時に、鋭利な先端部を有す
るマンドレル６により中心軸穴１６が加工され
る。 A solid material 14 with a center hole 13 drilled in its end surface
b is pushed forward inside the container 4 and die 2 by the punch 12. Solid material 14b is die 2
When passing through the inside, the tooth profile 1 is created by the blade 1 on the outer peripheral surface.
Simultaneously with the machining of step 5, a central shaft hole 16 is machined using a mandrel 6 having a sharp tip.
歯形部１５及び中心軸穴１６の同心度を出すた
めに次の方法をとる。 The following method is used to achieve concentricity between the toothed portion 15 and the center shaft hole 16.
まず第５図に示すようなマンドレル６のセンタ
合せに使用する素材１４ａ又は１４a′をダイス２
内に供給する。これらの素材１４ａ，１４a′には
マンドレル空穴（センタ穴）１３ａ，１３a′があ
けられている。第６図はマンドレル６のセンタ合
せに使用する素材１４a′をダイス２内に供給した
様子を説明する図である。 First, the material 14a or 14a' used for centering the mandrel 6 as shown in FIG.
supply within. These materials 14a, 14a' are provided with mandrel holes (center holes) 13a, 13a'. FIG. 6 is a diagram illustrating how the material 14a' used for centering the mandrel 6 is supplied into the die 2.
押出し工程は中実素材１４ａをコンテナ４内に
供給した後、ポンチ１２で中実素材１４ａを前方
へ押出すことで開始する。センタ穴１３，１３′
を加工した素材１４ａ又は１４a′で精度よくセン
タ出しが行なわれたマンドレル６は第４図に示す
ように押出し成形途中で素材１４ｃに捕促された
状態で次に来る素材１４ｂにセンタ穴加工を施こ
すことになる。このように順次押出しを行なうこ
とにより、センタ穴を加工した素材１４ａ又は１
４a′で精度よくセンタ出しが行なわれたマンドレ
ル６は初回の精度が保存されることになり、同心
度の良好な円筒歯車押出し品が得られる。 The extrusion process starts by supplying the solid material 14a into the container 4 and then extruding the solid material 14a forward with the punch 12. Center hole 13, 13'
The mandrel 6, which has been accurately centered in the processed material 14a or 14a', is caught by the material 14c during extrusion molding, as shown in FIG. It will be carried out. By sequentially extruding in this way, the material 14a or 1
The mandrel 6, which has been accurately centered at 4a', maintains its initial accuracy, and a cylindrical gear extrusion with good concentricity can be obtained.
押出し工程はつぎ押しで行なうためマンドレル
６を下方に引き抜き、押出し品を、押出し品突出
し治具１１により取り出す必要がある。 Since the extrusion process is performed by pressing, it is necessary to pull out the mandrel 6 downward and take out the extruded product using the extruded product ejection jig 11.
第４図において、押出し品（製品）１４ｄがダ
イス２外に押出されると同時にポンチ１２の下方
への移動を停止し、第３図に示す上方定位置まで
復帰させる。マンドレル６をポンチ１２の復帰に
合わせて下方へ引き抜き、スペーサ９内にとりの
こされた押出し品１４ｄを突出し治具１１で外に
取り出す。次に再びマンドレル６を、ダイス２内
に押込まれた素材１４ｂ及び１４ｃに先にマンド
レル６であけられた空穴に戻し、新たに中実素材
１４ｅをコンテナ４に入れポンチ１２にて前方へ
押出すことにより第４図の状態になる。 In FIG. 4, at the same time as the extruded product 14d is extruded out of the die 2, the punch 12 stops moving downward and returns to the upper position shown in FIG. The mandrel 6 is pulled out downward in synchronization with the return of the punch 12, and the extruded product 14d left inside the spacer 9 is taken out using the ejection jig 11. Next, the mandrel 6 is returned to the holes previously made with the mandrel 6 in the materials 14b and 14c that have been pushed into the die 2, and a new solid material 14e is placed in the container 4 and pushed forward with the punch 12. By releasing it, the state shown in Fig. 4 will be obtained.
製品である歯車の押出しによる量産は上記説明
の工程を順次繰返し実行することにより達成され
る。 Mass production of gears, which are products, by extrusion is achieved by sequentially and repeatedly performing the steps described above.
尚、マンドレル６の鋭利な先端部は中心軸穴加
工に必要であるとともに、マンドレル６を下方へ
引き抜く時の抵抗を低減し、さらに上記マンドレ
ル６を素材１４ｂ及び１４ｃの空穴にもどす時の
センタ出しを容易にする効果がある。 The sharp tip of the mandrel 6 is necessary for machining the center shaft hole, reduces the resistance when pulling the mandrel 6 downward, and also serves as a center point when returning the mandrel 6 to the empty holes of the materials 14b and 14c. It has the effect of making it easier to remove.
次に本発明を実際に試験した結果を以下に示
す。 Next, the results of actual testing of the present invention are shown below.
実験で使用した歯車押出し装置は第２図に示す
構造を有し、押出しが冷間で行なわれるためポン
チ１２、コンテナ４、ダイス２、マンドレル６は
すべて冷間金型用の合金工具鋼鋼材SKD１，
SKD１１を使用した。素材は31φ×40の中実
素材で材質はSCM２１（焼鈍材）を用いた。対
象とする歯車の諸元はモジユール1.3、歯数20枚
のヘリカル歯車で中心軸穴は15φである。潤滑剤
は、コンテナ内に二硫化モリブデンを噴霧すると
ともに素材にはボンデ処理を施したものを使用し
た。 The gear extrusion device used in the experiment has the structure shown in Figure 2, and since extrusion is performed in the cold, the punch 12, container 4, die 2, and mandrel 6 are all made of alloy tool steel material SKD1 for cold molds. ，
SKD11 was used. The material used was a 31φ x 40 solid material made of SCM21 (annealed material). The specifications of the target gear are module 1.3, helical gear with 20 teeth, and the center shaft hole is 15φ. As a lubricant, molybdenum disulfide was sprayed into the container, and the material was bonded.
押出しは、本法の特徴であるセンタ穴加工を施
こした素材をまずダイス内にセツトした状態から
開始する。つぎ押しを順次行なうにしたがつて、
中心軸穴とピツチ円との同心度が低下してくるの
ではないかとの心配があつたが、中心軸穴とピツ
チ円との同心度を３／１００〜５／１００に限つても10
00個程度
の押出しが１個のセンタ穴加工を施こした素材を
使用することで可能であることがわかつた。 Extrusion begins with the material, which has been machined with a center hole, which is a feature of this method, placed in a die. As the next press is performed in sequence,
There was a concern that the concentricity between the center shaft hole and the pitch circle would decrease, but even if the concentricity between the center shaft hole and the pitch circle was limited to 3/100 to 5/100,
It was found that it is possible to extrude approximately 0.00 pieces by using a material with a single center hole.
又素材外周面の歯形加工がなされると同時に中
心軸穴加工がなされるため、素材中心から半径方
向に圧縮力が働き、歯形加工が促進され、リード
誤差、歯形精度なども、マンドレルを用いない押
出しの場合よりも精度良く加工できることがわか
つた。 In addition, since the center shaft hole is machined at the same time as the tooth profile on the outer circumferential surface of the material is machined, compressive force is applied in the radial direction from the center of the material, accelerating tooth profile machining and reducing lead errors and tooth profile accuracy without using a mandrel. It was found that processing can be performed with better precision than extrusion.
以上実施例を挙げて説明したように、本発明に
よれば一つの素材に精度良くセンタ穴加工をして
おくだけで多数の素材の心合わせができ、又中心
軸穴の加工と外形加工とを同時に行なうので、簡
単にしかも精度良く円筒状部品を得ることができ
る。 As explained above with reference to the embodiments, according to the present invention, it is possible to align many materials simply by drilling a center hole in one material with high accuracy, and it is possible to align the center hole of a single material with high accuracy, Since these are carried out simultaneously, cylindrical parts can be obtained easily and with high precision.
第１図は従来の押出し加工装置の概略断面図、
第２図は本発明による押出し装置の一実施例の概
略断面図、第３，４及び６図は実施例による加工
過程を示す説明図、第５図ａ，ｂは最初に供給す
る中実素材の縦断面図である。
図面中、２はダイス、４はコンテナ、６はマン
ドレル、１２はポンチ、１３，１３′はセンタ
穴、１４ａ，１４a′は最初の中実素材、１４ｄは
製品である。
Figure 1 is a schematic cross-sectional view of a conventional extrusion processing device;
Fig. 2 is a schematic sectional view of an embodiment of an extrusion device according to the present invention, Figs. 3, 4 and 6 are explanatory diagrams showing the processing process according to the embodiment, and Figs. 5 a and b are solid materials supplied first. FIG. In the drawings, 2 is a die, 4 is a container, 6 is a mandrel, 12 is a punch, 13 and 13' are center holes, 14a and 14a' are initial solid materials, and 14d is a product.
Claims (1)
端を具え軸方向に可動となつているマンドレルを
位置させ、端面にセンタ穴をあけた中実素材をセ
ンタ穴のない中実素材を介して前記ダイス内に押
込んで先行の中実素材に前記刃と前記マンドレル
によつて外形加工と中心軸穴加工を同時に施すと
共に前記マンドレルの先端で後続の中実素材の端
面にセンタ穴を加工し、更に前記後続の素材を中
実素材を介して前記ダイス内に押込んで先行の素
材を外形加工と中心軸穴加工を施した製品として
前記ダイス外へ押出し、後続の素材には外形加工
と中心軸穴加工を同時に施し、この素材に続く前
記中実素材端面にはセンタ穴加工を施し、この後
前記マンドレルを後退させて前記製品から前記マ
ンドレルを抜出すことを特徴とする押出し加工方
法。 ２ 中実素材の外形を成形する刃を内側に具える
ダイスの製品の押出し側に鋭利な先端を具え軸方
向に可動となつているマンドレルを前記ダイスに
対し進退移動可能に設けると共に前記ダイス内に
素材を押込むポンチを前記ダイスに対し進退移動
可能に前記ダイスの素材挿入側に設け、前記マン
ドレルの前記ダイス内への進入位置では、前記ダ
イスの刃によつて外形加工され且つ前記マンドレ
ルによつて中心軸穴加工される素材に後続する中
実素材端面に前記マンドレル先端が貫入し、前記
マンドレルの後退位置では前記ダイスより押出さ
れた製品より前記マンドレルが抜出されるように
したことを特徴とする押出し加工装置。[Claims] 1. A mandrel with a sharp tip and movable in the axial direction is placed in a die with a forming blade inside, and a solid material with a center hole drilled in the end face is inserted into the die with a center hole. The cutting edge and the mandrel simultaneously process the outer shape and the center hole of the preceding solid material by pushing it into the die through the solid material without a solid material. A center hole is machined on the end face, and the subsequent material is pushed into the die through the solid material, and the preceding material is extruded out of the die as a product with external shape processing and center hole processing, and the subsequent material is The material is machined with an external shape and a center hole at the same time, a center hole is machined on the end surface of the solid material following this material, and then the mandrel is retreated to extract the mandrel from the product. Extrusion processing method. 2. A mandrel having a sharp tip and movable in the axial direction is provided on the product extrusion side of the die, which has a blade inside to form the external shape of the solid material, and is movable in the axial direction with respect to the die, and a mandrel is provided inside the die. A punch for pushing the material into the die is provided on the material insertion side of the die so as to be movable forward and backward with respect to the die, and at the position where the mandrel enters the die, the punch is processed into an external shape by the blade of the die, and Therefore, the tip of the mandrel penetrates into the end face of the solid material following the material to be machined with the center shaft hole, and in the retracted position of the mandrel, the mandrel is extracted from the product extruded from the die. Extrusion processing equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12002079A JPS5645209A (en) | 1979-09-20 | 1979-09-20 | Method and apparatus for extrusion work |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12002079A JPS5645209A (en) | 1979-09-20 | 1979-09-20 | Method and apparatus for extrusion work |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5645209A JPS5645209A (en) | 1981-04-24 |
| JPS622890B2 true JPS622890B2 (en) | 1987-01-22 |
Family
ID=14775914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12002079A Granted JPS5645209A (en) | 1979-09-20 | 1979-09-20 | Method and apparatus for extrusion work |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5645209A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58157521A (en) * | 1982-03-16 | 1983-09-19 | Nissan Motor Co Ltd | Method and apparatus for manufacturing gear |
| US4509353A (en) * | 1982-03-23 | 1985-04-09 | Nissan Motor Company, Limited | Method of and apparatus for forming gears |
| JPS58167020A (en) * | 1982-03-26 | 1983-10-03 | Nissan Motor Co Ltd | Method and apparatus for manufacturing gear |
| JPS6061131A (en) * | 1983-09-13 | 1985-04-08 | Hitachi Ltd | Plastic working method of metallic product |
| DE102013017178B4 (en) * | 2013-10-16 | 2020-07-16 | Ulrich Bruhnke | Extrusion press for the production of flat sheets |
-
1979
- 1979-09-20 JP JP12002079A patent/JPS5645209A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5645209A (en) | 1981-04-24 |
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