JP5108299B2 - Forging method and forging apparatus - Google Patents

Forging method and forging apparatus Download PDF

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JP5108299B2
JP5108299B2 JP2006352152A JP2006352152A JP5108299B2 JP 5108299 B2 JP5108299 B2 JP 5108299B2 JP 2006352152 A JP2006352152 A JP 2006352152A JP 2006352152 A JP2006352152 A JP 2006352152A JP 5108299 B2 JP5108299 B2 JP 5108299B2
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祐介 竹内
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Resonac Holdings Corp
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Showa Denko KK
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本発明は、バリ付き鍛造品を製造する鍛造方法及び該鍛造方法に用いられる鍛造装置に関する。   The present invention relates to a forging method for producing a forged product with burrs and a forging device used in the forging method.

複雑な形状の製品を鍛造により製造する方法として、次の方法が知られいている。すなわち、鍛造用素材を予備成形した後、素材を本成形することにより、バリ付き鍛造品を製造し、次いでこの鍛造品からバリを除去する方法である（例えば、特許文献１及び２参照）。   The following method is known as a method of manufacturing a product having a complicated shape by forging. That is, after a forging material is preformed, a forged product with burrs is produced by main forming the material, and then burrs are removed from the forged product (see, for example, Patent Documents 1 and 2).

この方法において、一般に、鍛造品からのバリの除去はバリ取り装置により行われる。このバリ取り装置によりバリを除去すると、バリ取り装置には除去したバリが残存する。この残存したバリをバリ取り装置から排出する場合には、残存したバリを例えば把持手段で把持してバリ取り装置から排出している。
特開２００６−１１０６２１号公報 特開平６−１９０４８７号公報 In this method, generally, burrs are removed from the forged product by a deburring device. When burrs are removed by this deburring device, the removed burrs remain in the deburring device. When the remaining burrs are discharged from the deburring device, the remaining burrs are gripped by, for example, gripping means and discharged from the deburring device.
JP 2006-110621 A JP-A-6-190487

而して、もし仮にバリが鍛造品の外周にその周方向の複数箇所で分断された状態に形成されている場合には、次の難点があった。すなわち、このようなバリをバリ取り装置により鍛造品から除去すると、バリ取り装置には複数の分断されたバリが残存するため、バリの排出操作が困難になる。   Thus, if the burrs are formed on the outer periphery of the forged product so as to be divided at a plurality of locations in the circumferential direction, there are the following difficulties. That is, when such a burr is removed from the forged product by the deburring device, a plurality of divided burrs remain in the deburring device, so that it is difficult to discharge the burr.

そこで、例えば、バリを鍛造品の外周にその全周に亘って繋がった状態に形成し、バリが環状に残存するようにバリを鍛造品から除去すれば、バリ取り装置には環状に繋がったバリが残存するので、バリを排出する際にバリのハンドリング性が良く、もってバリの排出作業を容易に行うことができる。しかし、バリを鍛造品の外周にその全周に亘って繋がった状態に形成するために、素材の体積を増大させると、材料歩留まりが悪くなるという問題が発生する。   Therefore, for example, if the burr is formed in a state where it is connected to the outer periphery of the forged product over the entire circumference, and the burr is removed from the forged product so that the burr remains in a ring shape, the burr removing device is connected in a ring shape. Since burrs remain, burr handling is good when burrs are discharged, and burrs can be easily discharged. However, if the volume of the material is increased in order to form the burrs in a state where the burrs are connected to the outer periphery of the forged product over the entire periphery, there arises a problem that the material yield is deteriorated.

本発明は、上記の技術背景に鑑みてなされたもので、その目的は、材料歩留まりが良く、しかも、鍛造品から除去されるバリについてハンドリング性の向上を図ることができる鍛造方法及び該鍛造方法に用いられる鍛造装置に関する。   The present invention has been made in view of the above-described technical background, and the object thereof is a forging method and a forging method that can improve the handling property of burrs removed from a forged product with good material yield. It relates to a forging device used in the process.

本発明は以下の手段を提供する。   The present invention provides the following means.

［１］ 互いに閉じ合わされた状態で内部に成形空間が形成される一対の型から構成された鍛造金型を用いて、素材を鍛造成形することにより、鍛造品の外周にバリが鍛造品の外周の全周に亘って繋がった状態に形成されたバリ付き鍛造品を製造する鍛造方法であって、
鍛造金型の成形空間は、その長さ方向に互いに隣接する第１成形部及び第２成形部を含んでおり、
素材は、鍛造金型の第１成形部及び第２成形部にそれぞれ対応する、互いに隣接する第１成形予定部及び第２成形予定部を含んでおり、
素材の第１成形予定部の断面積は、鍛造金型の第１成形部の断面積に対して同等以下に設定されるとともに、
素材の第１成形予定部の幅は、各型における第１成形部に対応する成形凹部の幅よりも大きく設定されており、
素材の第２成形予定部の断面積は、鍛造金型の第２成形部の断面積よりも大きく設定されており、
素材の第１成形予定部の幅方向両側縁部が各型の成形凹部の幅方向両側にはみ出した状態に、両方の型の間に配置された素材を、その厚さ方向に両方の型で加圧することにより、素材の第２成形予定部の余肉材料を第２成形予定部から第１成形予定部に流動供給しながら素材を成形することを特徴とする鍛造方法。 [1] By forging a material using a forging die composed of a pair of molds in which a molding space is formed inside in a closed state, burrs are formed on the outer periphery of the forged product. A forging method for producing a forged product with burr formed in a connected state over the entire circumference of the
The molding space of the forging die includes a first molding part and a second molding part that are adjacent to each other in the length direction thereof.
The material includes a first molding scheduled portion and a second molding scheduled portion adjacent to each other, corresponding to the first molding portion and the second molding portion of the forging die, respectively.
The cross-sectional area of the first molding planned portion of the material is set equal to or less than the cross-sectional area of the first molding portion of the forging die,
The width of the first molding planned portion of the material is set to be larger than the width of the molding concave portion corresponding to the first molding portion in each mold,
The cross-sectional area of the second molding planned portion of the material is set larger than the cross-sectional area of the second molding portion of the forging die,
The material placed between both molds with both side edges in the width direction of the first molding planned portion of the material protruding to both sides in the width direction of the molding recess of each mold in both molds in the thickness direction A forging method characterized in that, by pressurizing, the material is molded while the surplus material of the second molding scheduled portion of the material is supplied from the second molding scheduled portion to the first molding scheduled portion.

［２］ 素材の第１成形予定部の断面積は、鍛造金型の第１成形部の断面積に対して１０５％以下に設定されている前項１記載の鍛造方法。   [2] The forging method according to item 1, wherein the cross-sectional area of the first forming portion of the material is set to 105% or less with respect to the cross-sectional area of the first forming portion of the forging die.

［３］ 互いに閉じ合わされた状態で内部に成形空間が形成される一対の型から構成された鍛造金型を用いて、素材を鍛造成形することにより、鍛造品の外周にバリが鍛造品の外周の全周に亘って繋がった状態に形成されたバリ付き鍛造品を製造する、鍛造装置であって、
鍛造金型の成形空間は、その長さ方向に互いに隣接する第１成形部及び第２成形部を含んでおり、
素材は、鍛造金型の第１成形部及び第２成形部にそれぞれ対応する、互いに隣接する第１成形予定部及び第２成形予定部を含んでおり、
素材の第１成形予定部の断面積は、鍛造金型の第１成形部の断面積に対して同等以下に設定されるとともに、
素材の第１成形予定部の幅は、各型における第１成形部に対応する成形凹部の幅よりも大きく設定されており、
素材の第２成形予定部の断面積は、鍛造金型の第２成形部の断面積よりも大きく設定されており、
素材の第１成形予定部の幅方向両側縁部が各型の成形凹部の幅方向両側にはみ出した状態に、両方の型の間に配置された素材を、その厚さ方向に両方の型で加圧するものとなされていることを特徴とする特徴とする鍛造装置。 [3] By forging a material using a forging die composed of a pair of molds in which a molding space is formed inside in a state of being closed together, a burr is formed on the outer periphery of the forged product. A forging device for producing a forged product with burrs formed in a connected state over the entire circumference of the
The molding space of the forging die includes a first molding part and a second molding part that are adjacent to each other in the length direction thereof.
The material includes a first molding scheduled portion and a second molding scheduled portion adjacent to each other, corresponding to the first molding portion and the second molding portion of the forging die, respectively.
The cross-sectional area of the first molding planned portion of the material is set equal to or less than the cross-sectional area of the first molding portion of the forging die,
The width of the first molding planned portion of the material is set to be larger than the width of the molding concave portion corresponding to the first molding portion in each mold,
The cross-sectional area of the second molding planned portion of the material is set larger than the cross-sectional area of the second molding portion of the forging die,
The material placed between both molds with both side edges in the width direction of the first molding planned portion of the material protruding to both sides in the width direction of the molding recess of each mold in both molds in the thickness direction A forging device characterized by being configured to pressurize.

［４］ 素材の第１成形予定部の断面積は、鍛造金型の第１成形部の断面積に対して１０５％以下に設定されている前項３記載の鍛造装置。   [4] The forging device as recited in the aforementioned Item 3, wherein the cross-sectional area of the first molding scheduled portion of the material is set to 105% or less with respect to the cross-sectional area of the first molding portion of the forging die.

［５］ 素材を予備成形する予備成形装置と、
予備成形装置により予備成形された予備成形済み素材を本成形する本成形装置と、
素材を予備成形装置及び本成形装置に順次搬送する搬送装置と、を備えた鍛造装置を用いた鍛造方法であって、
本成形装置は、互いに閉じ合わされた状態で内部に成形空間が形成される一対の型から構成された鍛造金型を用いて、素材成形済み素材を鍛造成形することにより、鍛造品の外周にバリが鍛造品の外周の全周に亘って繋がった状態に形成されたバリ付き鍛造品を製造するものであり、
鍛造金型の成形空間は、その長さ方向に互いに隣接する第１成形部及び第２成形部を含んでおり、
予備成形済み素材は、鍛造金型の第１成形部及び第２成形部にそれぞれ対応する、互いに隣接する第１成形予定部及び第２成形予定部を含んでおり、
予備成形済み素材の第１成形予定部の断面積は、鍛造金型の第１成形部の断面積に対して同等以下に設定されるとともに、
予備成形済み素材の第１成形予定部の幅は、各型における第１成形部に対応する成形凹部の幅よりも大きく設定されており、
予備成形済み素材の第２成形予定部の断面積は、鍛造金型の第２成形部の断面積よりも大きく設定されており、
予備成形済み素材の第１成形予定部の幅方向両側縁部が各型の成形凹部の幅方向両側にはみ出した状態に、両方の型の間に配置された予備成形済み素材を、その厚さ方向に両方の型で加圧することにより、予備成形済み素材の第２成形予定部の余肉材料を第２成形予定部から第１成形予定部に流動供給しながら予備成形済み素材を成形することを特徴とする鍛造方法。 [5] A preforming device for preforming a material;
A main forming apparatus for main forming a preformed material preformed by the pre-forming apparatus;
A forging method using a forging device comprising a preforming device and a conveying device that sequentially conveys the material to the main forming device,
This molding device uses a forging die composed of a pair of molds in which molding spaces are formed inside in a state of being closed to each other. Is a forged product with a burr formed in a connected state over the entire circumference of the forged product,
The molding space of the forging die includes a first molding part and a second molding part that are adjacent to each other in the length direction thereof.
The preformed material includes a first molding planned portion and a second molding planned portion that are adjacent to each other and correspond to the first molding portion and the second molding portion of the forging die, respectively.
The cross-sectional area of the first molding scheduled portion of the preformed material is set equal to or less than the cross-sectional area of the first molding portion of the forging die,
The width of the first molding planned portion of the preformed material is set to be larger than the width of the molding concave portion corresponding to the first molding portion in each mold,
The cross-sectional area of the second molding scheduled part of the preformed material is set larger than the cross-sectional area of the second molding part of the forging die,
The thickness of the preformed material arranged between both molds in such a state that both side edges in the width direction of the first molding target portion of the preformed material protrude on both sides in the width direction of the molding concave portion of each mold. By pressing both molds in the direction, the preformed material is molded while the surplus material of the second molding scheduled portion of the preformed material is fluidly supplied from the second molding scheduled portion to the first molding scheduled portion. A forging method characterized by

［６］ 予備成形済み素材の第１成形予定部の断面積は、鍛造金型の第１成形部の断面積に対して１０５％以下に設定されている前項５記載の鍛造方法。   [6] The forging method according to item 5 above, wherein the cross-sectional area of the first molding scheduled portion of the preformed material is set to 105% or less with respect to the cross-sectional area of the first molding portion of the forging die.

［７］ 鍛造装置は、さらに、本成形装置により本成形されたバリ付き鍛造品からバリを除去するバリ取り装置を備えており、
搬送装置は、素材を予備成形装置、本成形装置及びバリ取り装置に順次搬送するものである前項５又は６記載の鍛造方法。 [7] The forging device further includes a deburring device that removes burrs from the forged product with burr formed by the main forming device.
7. The forging method according to 5 or 6 above, wherein the conveying device conveys the material sequentially to the preforming device, the main forming device, and the deburring device.

［８］ 素材を予備成形する予備成形装置と、
予備成形装置により予備成形された予備成形済み素材を本成形する本成形装置と、
素材を予備成形装置及び本成形装置に順次搬送する搬送装置と、を備えた鍛造装置であって、
本成形装置は、互いに閉じ合わされた状態で内部に成形空間が形成される一対の型から構成された鍛造金型を用いて、予備成形済み素材を鍛造成形することにより、鍛造品の外周にバリが鍛造品の外周の全周に亘って繋がった状態に形成されたバリ付き鍛造品を製造するものであり、
鍛造金型の成形空間は、その長さ方向に互いに隣接する第１成形部及び第２成形部を含んでおり、
予備成形済み素材は、鍛造金型の第１成形部及び第２成形部にそれぞれ対応する、互いに隣接する第１成形予定部及び第２成形予定部を含んでおり、
予備成形済み素材の第１成形予定部の断面積は、鍛造金型の第１成形部の断面積に対して同等以下に設定されるとともに、
予備成形済み素材の第１成形予定部の幅は、各型における第１成形部に対応する成形凹部の幅よりも大きく設定されており、
予備成形済み素材の第２成形予定部の断面積は、鍛造金型の第２成形部の断面積よりも大きく設定されており、
本成形装置は、予備成形済み素材の第１成形予定部の幅方向両側縁部が各型の成形凹部の幅方向両側にはみ出した状態に、両方の型の間に配置された予備成形済み素材を、その厚さ方向に両方の型で加圧するものとなされていることを特徴とする鍛造装置。 [8] A preforming device for preforming a material;
A main forming apparatus for main forming a preformed material preformed by the pre-forming apparatus;
A forging apparatus comprising a preforming apparatus and a conveying apparatus that sequentially conveys the raw material to the main forming apparatus,
This molding apparatus uses a forging die composed of a pair of molds in which molding spaces are formed inside in a state of being closed to each other, forging a preformed material, thereby forming a burring on the outer periphery of the forged product. Is a forged product with a burr formed in a connected state over the entire circumference of the forged product,
The molding space of the forging die includes a first molding part and a second molding part that are adjacent to each other in the length direction thereof.
The preformed material includes a first molding planned portion and a second molding planned portion that are adjacent to each other and correspond to the first molding portion and the second molding portion of the forging die, respectively.
The cross-sectional area of the first molding scheduled portion of the preformed material is set equal to or less than the cross-sectional area of the first molding portion of the forging die,
The width of the first molding planned portion of the preformed material is set to be larger than the width of the molding concave portion corresponding to the first molding portion in each mold,
The cross-sectional area of the second molding scheduled part of the preformed material is set larger than the cross-sectional area of the second molding part of the forging die,
This molding apparatus is a preformed material disposed between both molds in such a state that both side edges in the width direction of the first molding scheduled portion of the preformed material protrude from both sides in the width direction of the molding recess of each mold. The forging device is characterized in that it is pressed with both dies in the thickness direction.

［９］ 予備成形済み素材の第１成形予定部の断面積は、鍛造金型の第１成形部の断面積に対して１０５％以下に設定されている前項８記載の鍛造装置。   [9] The forging device as recited in the aforementioned Item 8, wherein the cross-sectional area of the first forming portion of the preformed material is set to 105% or less with respect to the cross-sectional area of the first forming portion of the forging die.

［１０］ さらに、本成形装置により本成形されたバリ付き鍛造品からバリを除去するバリ取り装置を備えており、
搬送装置は、素材を予備成形装置、本成形装置及びバリ取り装置に順次搬送するものである前項８又は９記載の鍛造装置。 [10] Further, a deburring device is provided for removing burrs from the forged product with burr formed by the forming device.
10. The forging device according to item 8 or 9 above, wherein the transport device sequentially transports the material to the preforming device, the main forming device, and the deburring device.

本発明は以下の効果を奏する。   The present invention has the following effects.

［１］の発明では、素材を鍛造成形することにより、鍛造品の外周にバリが鍛造品の外周の全周に亘って繋がった状態に形成されたバリ付き鍛造品を製造するので、例えば、このバリ付き鍛造品からバリを環状に除去することができる。これにより、バリを排出する際にバリのハンドリング性を向上させることができる。   In the invention of [1], by forging the material, a forged product with burrs formed in a state where burrs are connected to the outer periphery of the forged product over the entire circumference of the forged product is produced. The burrs can be removed annularly from the forged product with burrs. Thereby, the burr handling property can be improved when the burr is discharged.

さらに、素材の第１成形予定部の断面積は、鍛造金型の第１成形部の断面積に対して同等以下に設定されているから、素材の第１成形予定部の体積をできる限り少なくすることができ、もって材料歩留まりを向上させることができる。   Furthermore, since the cross-sectional area of the first molding target portion of the material is set to be equal to or less than the cross-sectional area of the first molding portion of the forging die, the volume of the first molding target portion of the material is as small as possible. Thus, the material yield can be improved.

さらに、本発明では、素材の第１成形予定部の幅方向両側縁部が各型の成形凹部の幅方向両側にはみ出した状態に、両方の型の間に配置された素材を、その厚さ方向に両方の型で加圧することにより、素材の第２成形予定部の余肉材料を第２成形予定部から第１成形予定部に流動供給しながら素材を成形する。したがって、素材の成形時には、素材の第１成形予定部に第２成形予定部の余肉材料が供給されるので、素材の第１成形予定部に欠肉が発生するのを防止することができる。これにより、素材の第１成形予定部を設計形状に確実に成形することができる。しかも、素材の第１成形予定部の幅方向両側縁部が各型の成形凹部の幅方向両側にはみ出した状態に、素材が両方の型の間に配置されているので、バリを各型の成形凹部の幅方向両側に確実に張出させることができる。   Further, in the present invention, the thickness of the material disposed between both molds in such a state that both side edges in the width direction of the first planned molding portion of the material protrudes on both sides in the width direction of the molding recesses of the respective molds. By pressing with both molds in the direction, the material is molded while the surplus material of the second molding scheduled portion of the material is supplied from the second molding scheduled portion to the first molding scheduled portion. Therefore, when the material is molded, the surplus material of the second molding scheduled portion is supplied to the first molding scheduled portion of the material, so that it is possible to prevent the occurrence of a lack of thickness in the first molding planned portion of the material. . Thereby, the 1st shaping | molding scheduled part of a raw material can be shape | molded reliably to a design shape. In addition, since the material is disposed between both molds in such a state that both side edges in the width direction of the first molding planned portion of the material protrude from both sides in the width direction of the molding concave portion of each mold, It can project reliably on both sides in the width direction of the molding recess.

［２］の発明では、素材の第１成形予定部に欠肉が発生するのを確実に防止することができるし、バリを成形凹部の幅方向両側に更に確実に張出させることができる。   In the invention of [2], it is possible to reliably prevent the occurrence of a lack of thickness at the first molding scheduled portion of the material, and it is possible to more reliably project the burr on both sides in the width direction of the molding recess.

［３］及び［４］の発明では、それぞれ上記［１］及び［２］の発明に係る鍛造方法に好適に用いられる鍛造装置を提供できる。   In the inventions [3] and [4], a forging device suitably used for the forging method according to the inventions [1] and [2] can be provided.

［５］及び［６］の発明では、それぞれ上記［１］及び［２］の発明の効果と同様の効果を奏する上、更に、素材を予備成形から本成形まで連続して加工することができる。   In the inventions [5] and [6], the same effects as those of the inventions [1] and [2] can be obtained, and further, the material can be continuously processed from preforming to main forming. .

［７］の発明では、素材を予備成形からバリ取りまで連続して加工することができる。   In the invention of [7], the material can be continuously processed from preforming to deburring.

［８］〜［１０］の発明では、それぞれ上記［５］〜［７］の発明に係る鍛造方法に好適に用いられる鍛造装置を提供できる。   In the inventions [8] to [10], forging apparatuses that are preferably used in the forging methods according to the inventions [5] to [7] can be provided.

次に、本発明の一実施形態について図面を参照して以下に説明する。   Next, an embodiment of the present invention will be described below with reference to the drawings.

図１及び図２において、（１）は本発明の一実施形態に係る鍛造装置である。この鍛造装置（１）は詳述するとトランスファプレス機である。この鍛造装置（１）は、予備成形装置（１０）と、本成形装置（２０）と、バリ取り装置（３０）と、搬送装置（４０）とを備えている。   1 and 2, (1) is a forging device according to an embodiment of the present invention. This forging device (1) is a transfer press machine in detail. The forging device (1) includes a preforming device (10), a main forming device (20), a deburring device (30), and a conveying device (40).

予備成形装置（１０）は、鍛造用素材（Ｓ０）を予備成形（荒成形）するものである。   The pre-forming device (10) is for pre-forming (rough forming) the forging material (S0).

本成形装置（２０）は、予備成形装置（１０）により予備成形された予備成形済み素材（Ｓ１）を本成形するものである。   The main molding apparatus (20) is for main molding the preformed material (S1) preformed by the preforming apparatus (10).

バリ取り装置（３０）は、本成形装置（２０）により本成形された本成形済み素材としてのバリ付き鍛造品（Ｓ２）からバリ（Ｆ）を環状に除去するものである。   The deburring device (30) removes the burrs (F) in an annular shape from the forged product (S2) with burrs as the material that has been fully formed by the forming device (20).

予備成形装置（１０）、本成形装置（２０）及びバリ取り装置（３０）は、互いに水平方向に一列に並んで設置されている。   The preforming device (10), the main forming device (20), and the deburring device (30) are installed in a row in the horizontal direction.

搬送装置（４０）は、素材（Ｓ０）を予備成形装置（１０）、本成形装置（２０）及びバリ取り装置（３０）に順次搬送するものである。この搬送装置（４０）は、予備成形装置（１０）、本成形装置（２０）及びバリ取り装置（３０）の両側に互いに平行に配置された一対のフィードバー（４１）（４１）を備えている。各フィードバー（４１）（４１）における互いに対向する位置に、素材（Ｓ０）、予備成形済み素材（Ｓ１）及びバリ（Ｆ）を把持するフィンガー（４２）が複数装着されている。   The conveying device (40) conveys the material (S0) sequentially to the preforming device (10), the main forming device (20), and the deburring device (30). The conveying device (40) includes a pair of feed bars (41) and (41) arranged in parallel to each other on both sides of the preforming device (10), the main forming device (20) and the deburring device (30). Yes. A plurality of fingers (42) for gripping the material (S0), the preformed material (S1), and the burr (F) are mounted at positions facing each other in the feed bars (41) (41).

図１０に示すように、この鍛造装置（１）は、円柱状の鍛造用素材（Ｓ０）を予備成形装置（１０）により予備成形し、次いで、予備成形済み素材（Ｓ１）を本成形装置（２０）により本成形し、次いで、バリ取り装置（３０）により本成形済み素材としてのバリ付き鍛造品（Ｓ２）からバリ（Ｆ）を環状に除去することにより、設計形状の鍛造品（Ｓ２）を製造するものである。   As shown in FIG. 10, this forging device (1) preliminarily molds a cylindrical forging material (S0) with a preforming device (10), and then transforms the preformed material (S1) into a main molding device (S1). 20), and then removing the burrs (F) from the forged product (S2) with burrs as the fully formed material by the deburring device (30) in an annular shape, thereby forging the designed shape (S2). Is to be manufactured.

この鍛造品（Ｓ２）は、例えば、車両（例：自動車、鉄道車両）用アームやフレーム等の車両部品に用いられる。ただし本発明では、鍛造装置（１）により鍛造成形される鍛造品（Ｓ２）は車両部品に用いられるものであることに限定されるものではなく、その他の用途に用いられるものであっても良い。   This forged product (S2) is used for, for example, vehicle parts such as an arm or a frame for a vehicle (for example, an automobile or a railway vehicle). However, in the present invention, the forged product (S2) forged by the forging device (1) is not limited to being used for vehicle parts, and may be used for other purposes. .

素材（Ｓ０）は、例えば、アルミニウム（その合金を含む）等の金属からなる。   The material (S0) is made of a metal such as aluminum (including its alloy), for example.

まず、本成形装置（２０）（詳述すると本成形用鍛造装置）の構成について以下に説明する。   First, the structure of the main forming apparatus (20) (more specifically, the main forming forging apparatus) will be described below.

図２及び図３に示すように、この本成形装置（２０）は、互いに対向して配置された一対の上型（２２）及び下型（２２）から構成された本成形用鍛造金型（２１）を備えている。この鍛造金型（２１）は詳述すると半密閉金型である。また、図３に示すように、鍛造金型（２１）の上型（２２）と下型（２２）とを互いに閉じ合わせた状態では、鍛造金型（２１）の内部に、予備成形済み素材（Ｓ１）を所定形状に成形する成形空間（２３）が形成される。   As shown in FIGS. 2 and 3, the main forming apparatus (20) includes a main forming forging die (a main forming forging die (22) and a lower die (22)) disposed opposite to each other. 21). More specifically, this forging die (21) is a semi-hermetic die. In addition, as shown in FIG. 3, in the state where the upper die (22) and the lower die (22) of the forging die (21) are closed to each other, the preformed material is placed inside the forging die (21). A molding space (23) for molding (S1) into a predetermined shape is formed.

この本成形装置（２０）は、鍛造金型（２１）を用いて予備成形済み素材（Ｓ１）を鍛造成形することにより、図１０に示すように、本成形済み素材として、バリ付き鍛造品（Ｓ２）を製造するものである。このバリ付き鍛造品（Ｓ２）は、鍛造品（Ｓ２）（詳述すると鍛造品本体部）の外周にバリ（Ｆ）が鍛造品（Ｓ２）（鍛造品本体部）の外周の全周に亘って繋がった状態に形成されたものである。   This forging apparatus (20) forges a preformed material (S1) using a forging die (21), and as shown in FIG. S2) is manufactured. In this forged product (S2) with burrs, the burrs (F) extend over the entire periphery of the forged product (S2) (forged product main body) on the outer periphery of the forged product (S2) (specifically, the forged product main body). It is formed in a connected state.

このバリ付き鍛造品（Ｓ２）の鍛造品本体部の長さ方向両端部には、径大の膨出部（７１）（７１）が形成されている。この膨出部（７１）の上下両面の中央部には凹部が形成されている。また、バリ付き鍛造品（Ｓ２）の鍛造品本体部の長さ方向中間部には、両膨出部（７１）（７１）を連結した径小の断面略円形状の軸部（７２）が形成されている。   Large-diameter bulging portions (71) (71) are formed at both ends in the longitudinal direction of the forged product main body portion of the forged product (S2) with burrs. Concave portions are formed in the central portions of the upper and lower surfaces of the bulging portion (71). In addition, a shaft portion (72) having a substantially circular cross section with a small diameter connecting both the bulging portions (71) (71) is provided at the intermediate portion in the longitudinal direction of the forged product main body portion of the forged product with burr (S2). Is formed.

図３に示すように、鍛造金型（２１）の成形空間（２３）は、成形空間（２３）の長さ方向両端部に配置された２個の第１成形部（２３ａ）（２３ａ）と、成形空間（２３）の長さ方向中間部に配置された第２成形部（２３ｂ）とから構成されている。したがって、成形空間（２３）の第１成形部（２３ａ）と第２成形部（２３ｂ）とは、成形空間（２３）の長さ方向に互いに隣接して配置されている。   As shown in FIG. 3, the molding space (23) of the forging die (21) has two first molding parts (23a) (23a) disposed at both ends in the length direction of the molding space (23). The second molding part (23b) disposed in the middle part in the longitudinal direction of the molding space (23). Accordingly, the first molding part (23a) and the second molding part (23b) of the molding space (23) are arranged adjacent to each other in the length direction of the molding space (23).

成形空間（２３）の第１成形部（２３ａ）は、予備成形済み素材（Ｓ１）の長さ方向端部を径大の膨出状に成形するものである。   The 1st shaping | molding part (23a) of shaping | molding space (23) shape | molds the length direction edge part of a preformed raw material (S1) in the bulging shape of a large diameter.

成形空間（２３）の第２成形部（２３ｂ）は、予備成形済み素材（Ｓ１）の長さ方向中間部を径小の軸状に成形するものである。   The 2nd shaping | molding part (23b) of shaping | molding space (23) shape | molds the longitudinal direction intermediate part of the preformed raw material (S1) in the shape of a small diameter shaft.

さらに、この鍛造金型（２１）は上述したように上型（２２）と下型（２２）とに分割されており、これにより、上型（２２）に成形空間（２３）の上半部からなる上型彫り部（インプレッション）（２２ａ）が形成されるとともに、下型（２２）に成形空間（２３）の下半部からなる下型彫り部（２２ａ）が形成されている。   Further, as described above, the forging die (21) is divided into the upper die (22) and the lower die (22), whereby the upper half portion of the molding space (23) is formed in the upper die (22). An upper mold carved portion (impression) (22a) is formed, and a lower mold carved portion (22a) consisting of the lower half of the molding space (23) is formed in the lower mold (22).

一方、図１０に示すように、予備成形済み素材（Ｓ１）は、予備成形済み素材（Ｓ１）の長さ方向両端部に配置された２個の第１成形予定部（６１）（６１）と、予備成形済み素材（Ｓ１）の長さ方向中間部に配置された第２成形予定部（６２）とを含んでいる。したがって、第１成形予定部（６１）と第２成形予定部（６２）とは、予備成形済み素材（Ｓ１）の長さ方向に互いに隣接して配置されている。   On the other hand, as shown in FIG. 10, the preformed material (S1) includes two first molding planned portions (61) (61) disposed at both ends in the length direction of the preformed material (S1). And a second scheduled molding part (62) disposed in the intermediate part in the longitudinal direction of the preformed material (S1). Therefore, the first molding scheduled part (61) and the second molding scheduled part (62) are arranged adjacent to each other in the length direction of the preformed material (S1).

予備成形済み素材（Ｓ１）の第１成形予定部（６１）は、鍛造金型（２１）の成形空間（２３）の第１成形部（２３ａ）に対応する部位であり、すなわち第１成形部（２３ａ）で径大の膨出状に成形される予定の部位である。   The first molding scheduled part (61) of the preformed material (S1) is a part corresponding to the first molding part (23a) of the molding space (23) of the forging die (21), that is, the first molding part. This is the part that is to be formed into a bulging shape having a large diameter at (23a).

予備成形済み素材（Ｓ１）の第２成形予定部（６２）は、鍛造金型（２１）の成形空間（２３）の第２成形部（２３ｂ）に対応する部位であり、すなわち第２成形部（２３ｂ）で径小の軸状に成形される予定の部位である。なお、この第２成形予定部（６２）の幅方向両側縁部には、予備成形時に生じたバリ（Ｆ）が形成されている。   The second molding scheduled part (62) of the preformed material (S1) is a part corresponding to the second molding part (23b) of the molding space (23) of the forging die (21), that is, the second molding part. (23b) is a part that is to be formed into a small-diameter shaft. In addition, the burr | flash (F) which arose at the time of preforming is formed in the width direction both-sides edge part of this 2nd shaping | molding scheduled part (62).

図５に示すように、予備成形済み素材（Ｓ１）の第１成形予定部（６１）の断面積は、鍛造金型（２１）の成形空間（２３）の第１成形部（２３ａ）の断面積に対して同等以下に設定されており、すなわち第１成形部（２３ａ）の断面積に対して１００％以下に設定されている。さらに、第１成形予定部（６１）の断面積は、第１成形部（２３ａ）の断面積に対して例えば９０％（特に好ましくは９５％）以上に設定されるのが望ましく、こうすることにより第１成形予定部（６１）に欠肉が発生するのを確実に防止することができる。ただし本発明では、第１成形予定部（６１）の断面積は第１成形部（２３ａ）の断面積に対して上記の割合以上であることに限定されるものではない。   As shown in FIG. 5, the cross-sectional area of the first molding scheduled portion (61) of the preformed material (S1) is the cutting of the first molding portion (23a) in the molding space (23) of the forging die (21). It is set to be equal to or less than the area, that is, set to 100% or less with respect to the cross-sectional area of the first molding portion (23a). Furthermore, it is desirable that the cross-sectional area of the first molding part (61) is set to 90% (particularly preferably 95%) or more with respect to the cross-sectional area of the first molding part (23a). Thus, it is possible to reliably prevent the occurrence of a lack of thickness in the first molding scheduled portion (61). However, in the present invention, the cross-sectional area of the first molding target part (61) is not limited to the above ratio or more with respect to the cross-sectional area of the first molding part (23a).

さらに、予備成形済み素材（Ｓ１）の第１成形予定部（６１）の幅（Ａ）は、上下各型（２２）（２２）における第１成形部（２３ａ）に対応する第１成形凹部（２４ａ）の幅（Ｂ）よりも大きく設定されている（即ちＡ＞Ｂ）。したがって、図９Ａに示すように、第１成形予定部（６１）を上下各型（２２）（２２）の第１成形凹部（２４ａ）内に配置させると、第１成形予定部（６１）の幅方向両側縁部（６１ａ）（６１ａ）が第１成形凹部（２４ａ）の幅方向両側にはみ出した状態となる。なお、予備成形済み素材（Ｓ１）の第１成形予定部（６１）の幅（Ａ）は、第１成形凹部（２４ａ）の幅（Ｂ）に対して例えば１．０５〜１．２０倍の範囲内に設定されるのが望ましい。ただし本発明では、第１成形予定部（６１）の幅（Ａ）は第１成形凹部（２４ａ）の幅（Ｂ）に対して上記の割合の範囲内であることに限定されるものではない。   Further, the width (A) of the first molding scheduled portion (61) of the preformed material (S1) is the first molding concave portion (23a) corresponding to the first molding portion (23a) in the upper and lower molds (22) and (22). It is set larger than the width (B) of 24a) (that is, A> B). Therefore, as shown in FIG. 9A, when the first molding planned portion (61) is arranged in the first molding concave portion (24a) of the upper and lower molds (22) and (22), the first molding planned portion (61) The width direction both side edge parts (61a) (61a) will be in the state which protruded to the width direction both sides of the 1st shaping | molding recessed part (24a). The width (A) of the first molding planned portion (61) of the preformed material (S1) is, for example, 1.05 to 1.20 times the width (B) of the first molding recess (24a). It is desirable to set within the range. However, in the present invention, the width (A) of the first molding target portion (61) is not limited to be within the above range with respect to the width (B) of the first molding recess (24a). .

また、図６に示すように、予備成形済み素材（Ｓ１）の第２成形予定部（６２）は、鍛造品（Ｓ２）の径小の軸部（７２）を形成する部位である。この第２成形予定部（６２）は、予備成形時に円柱状の素材（Ｓ０）の長さ方向中間部がその直径が小さくなるように加圧されて形成された部位であるから、余肉材料を含有している。そのため、第２成形予定部（６２）の断面積は、鍛造金型（２１）の成形空間（２３）の第２成形部（２３ｂ）の断面積よりも大きく設定されている。   Moreover, as shown in FIG. 6, the 2nd shaping | molding scheduled part (62) of a preformed raw material (S1) is a site | part which forms the small diameter shaft part (72) of a forged product (S2). This second molding scheduled portion (62) is a portion formed by pressurizing the intermediate portion in the longitudinal direction of the cylindrical material (S0) so as to reduce its diameter at the time of preliminary molding. Contains. Therefore, the cross-sectional area of the second molding scheduled portion (62) is set larger than the cross-sectional area of the second molding portion (23b) in the molding space (23) of the forging die (21).

さらに、予備成形済み素材（Ｓ１）の第２成形予定部（６２）の幅は、上下各型（２２）（２２）における第２成形部（２３ｂ）に対応する第２成形凹部（２４ｂ）の幅よりも大きく設定されている。   Furthermore, the width of the second molding scheduled portion (62) of the preformed material (S1) is such that the second molding recess (24b) corresponding to the second molding portion (23b) in the upper and lower molds (22) and (22). It is set larger than the width.

なお、このような形状及び大きさの予備成形済み素材（Ｓ１）は、円柱状の素材（Ｓ０）を予備成形装置（１０）により鍛造成形することにより、製造されるものである。   Note that the preformed material (S1) having such a shape and size is manufactured by forging the columnar material (S0) with the preforming device (10).

次に、予備成形装置（１０）及びバリ取り装置（３０）の構成について以下に説明する。   Next, the structure of a preforming apparatus (10) and a deburring apparatus (30) is demonstrated below.

図１及び図２に示すように、予備成形装置（１０）（詳述すると予備成形用鍛造装置）は、互いに対向して配置された一対の上型（１２）及び下型（１２）から構成された予備成形用鍛造金型（１１）を備えたものであり、円柱状の素材（Ｓ０）を所定形状に鍛造成形するものである。そして、その上型（１２）は鍛造装置（１）のメインスライド（２）に取り付けられるとともに、その下型（１２）は鍛造装置（１）のベッド（３）に取り付けられている。   As shown in FIGS. 1 and 2, the preforming device (10) (specifically, the forging device for preforming) is composed of a pair of an upper die (12) and a lower die (12) arranged to face each other. The preformed forging die (11) is provided, and the cylindrical material (S0) is forged into a predetermined shape. The upper die (12) is attached to the main slide (2) of the forging device (1), and the lower die (12) is attached to the bed (3) of the forging device (1).

バリ取り装置（３０）は、互いに対向して配置された一対の上型（３２）及び下型（３２）から構成されたバリ取り用金型（３１）を備えたものであり、下型（３２）上に配置されたバリ付き鍛造品（Ｓ２）から鍛造品本体部を上型（３２）で下方向に打ち抜き、これによりバリ（Ｆ）をバリ付き鍛造品（Ｓ２）から環状に除去するものである。そして、その上型（３２）はメインスライド（２）に取り付けられるとともに、その下型（３２）はベッド（３）に取り付けられている。なお図２において、（３３）は、打ち抜かれた鍛造品（Ｓ２）を下型（３２）から下方向に排出する排出孔である。   The deburring device (30) includes a deburring mold (31) composed of a pair of an upper mold (32) and a lower mold (32) arranged to face each other. 32) The forged product main body is punched downward from the forged product with burr (S2) arranged on the upper die (32), thereby removing the burr (F) from the forged product with burr (S2) in an annular shape. Is. The upper die (32) is attached to the main slide (2), and the lower die (32) is attached to the bed (3). In FIG. 2, (33) is a discharge hole for discharging the punched forged product (S2) downward from the lower mold (32).

また同じく、本成形装置（２０）の上型（２２）はメインスライド（２）に取り付けられるとともに、その下型（２２）はベッド（３）に取り付けられている。   Similarly, the upper mold (22) of the molding apparatus (20) is attached to the main slide (2), and the lower mold (22) is attached to the bed (3).

そして、この鍛造装置（１）は、メインスライド（２）が昇降駆動することにより、これらの装置（１０）（２０）（３０）の上型（１２）（２２）（３２）が一体的に昇降動作されるものであって、更に、このメインスライド（２）の昇降動作と同期して搬送装置（４０）が動作するように構成されている。   The forging device (1) is configured so that the upper molds (12), (22), and (32) of the devices (10), (20), and (30) are integrated as a result of the main slide (2) being driven up and down. Further, the conveying device (40) is operated in synchronism with the raising / lowering operation of the main slide (2).

次に、本実施形態の鍛造装置（１）を用いた鍛造方法について以下に説明する。   Next, a forging method using the forging device (1) of this embodiment will be described below.

加熱装置（図示せず）により加熱された加熱状態の円柱状素材（Ｓ０）を、無端ベルトコンベア等のコンベヤ（４５）により加熱装置から鍛造装置（１）に送る。   The heated columnar material (S0) heated by the heating device (not shown) is sent from the heating device to the forging device (1) by a conveyor (45) such as an endless belt conveyor.

次いで、送られてきた素材（ＳＯ）を搬送装置（４０）のフィンガー（４２）により把持してコンベヤ（４５）から予備成形装置（１０）に搬送し下型（１２）上に配置する。そして、この素材（Ｓ０）を予備成形装置（１０）により所定形状に予備成形し、これにより予備成形済み素材（Ｓ１）を製造する。   Next, the fed material (SO) is gripped by the fingers (42) of the conveying device (40), conveyed from the conveyor (45) to the pre-forming device (10), and placed on the lower mold (12). Then, this material (S0) is preformed into a predetermined shape by the preforming device (10), thereby producing a preformed material (S1).

この予備成形時には、円柱状の素材（Ｓ０）の長さ方向中間部はその直径が小さくなるように上下両型（１２）（１２）で加圧される。そのため、この部位、即ち予備成形済み素材（Ｓ１）の第２成形予定部（６２）は余肉材料を含有するとともに、その幅方向両側縁部にバリ（Ｆ）が形成される。一方、円柱状の素材（Ｓ０）の長さ方向両端部、即ち予備成形済み素材（Ｓ１）の両第１成形予定部（６１）（６１）は、その断面積が設計形状の断面積に対して同等以下になるように形成される。   At the time of this preforming, the middle portion in the longitudinal direction of the columnar material (S0) is pressurized by both the upper and lower molds (12) and (12) so that the diameter thereof is reduced. Therefore, this part, that is, the second molding scheduled portion (62) of the preformed material (S1) contains surplus material, and burrs (F) are formed at both side edges in the width direction. On the other hand, both end portions in the length direction of the columnar material (S0), that is, both the first molding scheduled portions (61) and (61) of the preformed material (S1) have a cross-sectional area with respect to the cross-sectional area of the design shape Are formed to be equivalent or less.

次いで、この予備成形済み素材（Ｓ１）を搬送装置（４０）のフィンガー（４２）により把持して予備成形装置（１０）から本成形装置（２０）に搬送しその下型（２２）上に配置する。そして、この予備成形済み素材（Ｓ１）を本成形装置（２０）により本成形し、これにより本成形済み素材としてバリ付き鍛造品（Ｓ２）を製造する。   Next, the preformed material (S1) is gripped by the fingers (42) of the conveying device (40), conveyed from the preforming device (10) to the main molding device (20), and placed on the lower die (22). To do. Then, the preformed material (S1) is finally formed by the main forming apparatus (20), thereby producing a forged product (S2) with a burr as the main formed material.

この本成形装置（２０）による鍛造方法は次のとおりである。   The forging method using this main forming apparatus (20) is as follows.

図７及び図９Ａに示すように、搬送装置（４０）により搬送されてきた予備成形済み素材（Ｓ１）は、その第１成形予定部（６１）の幅方向両側縁部（６１ａ）（６１ａ）が上下各型（２２）（２２）の第１成形凹部（２４ａ）の幅方向両側にはみ出した状態に且つその第２成形予定部（６２）の幅方向両側縁部が上下各型（２２）（２２）の第２成形凹部（２４ｂ）の幅方向両側にはみ出しだ状態に、上下両型（２２）（２２）の間に配置される（図５及び図６参照）。さらに、予備成形済み素材（Ｓ１）は、その第１成形予定部（６１）の長さ方向端部（６１ｂ）が上下各型（２２）（２２）の第１成形凹部（２４ａ）の長さ方向端側にはみ出した状態に上下両型（２２）（２２）の間に配置される。なお本実施形態では、予備成形済み素材（Ｓ１）は、上下両型（２２）（２２）の間として、下型（２２）の下型彫り部（２２ａ）に載置される。   As shown in FIG. 7 and FIG. 9A, the preformed material (S1) conveyed by the conveying device (40) has both side edges (61a) (61a) in the width direction of the first molding scheduled portion (61). Are protruded from both sides in the width direction of the first molding recess (24a) of the upper and lower molds (22) and (22), and both side edges in the width direction of the second molding part (62) are the upper and lower molds (22). The second molding recess (24b) of (22) is disposed between the upper and lower molds (22) and (22) so as to protrude from both sides in the width direction (see FIGS. 5 and 6). Further, in the preformed material (S1), the lengthwise end (61b) of the first molding scheduled portion (61) is the length of the first molding recess (24a) of the upper and lower molds (22) and (22). It is arranged between the upper and lower molds (22) and (22) so as to protrude to the direction end side. In the present embodiment, the preformed material (S1) is placed between the upper and lower molds (22) and (22) on the lower mold carved portion (22a) of the lower mold (22).

そして、図９Ａ及び図９Ｂに示すように、メインスライド（２）を下降駆動させることで上型（２２）を下型（２２）に向かって下降駆動させ、これにより予備成形済み素材（Ｓ１）をその厚さ方向に上下両型（２２）（２２）で加圧する。これにより、予備成形済み素材（Ｓ１）の第２成形予定部（６２）の余肉材料を第２成形予定部（６２）から第１成形予定部（６１）に塑性流動させて第１成形予定部（６１）に供給しながら予備成形済み素材（Ｓ１）を成形する。   Then, as shown in FIGS. 9A and 9B, the main slide (2) is driven downward to drive the upper die (22) downward toward the lower die (22), whereby the preformed material (S1). Is pressed by the upper and lower molds (22) and (22) in the thickness direction. As a result, the surplus material of the second molding scheduled portion (62) of the preformed material (S1) is plastically flowed from the second molding scheduled portion (62) to the first molding scheduled portion (61) to be first molded scheduled. The preformed material (S1) is molded while being supplied to the part (61).

すなわち、予備成形済み素材（Ｓ１）をその厚さ方向に加圧した場合、予備成形済み素材（Ｓ１）の第２成形予定部（６２）が加圧されることで該第２成形予定部（６２）の余肉材料の一部が第２成形予定部（６２）から第２成形凹部（２４ｂ）の幅方向両側にバリ（Ｆ）として塑性流動するとともに、更に、第２成形予定部（６２）の余肉材料の一部が第２成形予定部（６２）から第１成形予定部（６１）側に塑性流動して第１成形予定部（６１）に供給される。これにより、第１成形予定部（６１）の体積（断面積）が増大し、もって、第１成形予定部（６１）に欠肉が発生するのが防止されるとともに、バリ（Ｆ）が第１成形凹部（２４ａ）の幅方向両側及び長さ方向端側にそれぞれ張出される。その結果、バリ（Ｆ）が鍛造品（Ｓ２）の外周に鍛造品（Ｓ２）の外周の全周に亘って繋がって形成されたバリ付き鍛造品（Ｓ２）が製造される。   That is, when the preformed material (S1) is pressed in the thickness direction, the second molding planned portion (62) of the preformed material (S1) is pressurized to press the second molding planned portion ( A part of the surplus material 62) plastically flows as burrs (F) from the second molding planned portion (62) to both sides in the width direction of the second molding concave portion (24b), and further, the second molding planned portion (62). ) Part of the surplus material is plastically flowed from the second molding scheduled portion (62) to the first molding planned portion (61) side and supplied to the first molding planned portion (61). As a result, the volume (cross-sectional area) of the first molding scheduled portion (61) is increased, so that the first molding scheduled portion (61) is prevented from being thinned, and the burr (F) is Each of the molding recesses (24a) is projected on both sides in the width direction and on the end side in the length direction. As a result, a forged product (S2) with burrs in which the burrs (F) are connected to the outer periphery of the forged product (S2) over the entire outer periphery of the forged product (S2) is manufactured.

次いで、このバリ付き鍛造品（Ｓ２）（即ち本成形済み素材）を搬送装置（４０）のフィンガー（４２）により把持して本成形装置（２０）からバリ取り装置（３０）に搬送しその下型（３２）上に配置する。そして、このバリ付き鍛造品（Ｓ２）からバリ（Ｆ）をバリ取り装置（３０）により環状に除去する。   Next, the forged product (S2) with burr (S2) (i.e., the final molded material) is gripped by the fingers (42) of the conveying device (40) and conveyed from the main molding device (20) to the deburring device (30). Place on mold (32). Then, the burrs (F) are removed from the forged product (S2) with burrs in an annular shape by the deburring device (30).

バリ（Ｆ）が除去された鍛造品（Ｓ２）は、排出孔（３３）を通過した後、無端ベルトコンベア等のコンベヤ（４６）により次の工程に搬送される。そして、搬送された鍛造品（Ｓ２）は、例えば、溶体化工程、焼入れ工程及び時効工程に順次送られて各工程で所定の処理が施され、最後に検査工程に送られて検査が行われる。   The forged product (S2) from which the burrs (F) have been removed passes through the discharge hole (33) and is then conveyed to the next step by a conveyor (46) such as an endless belt conveyor. And the forged product (S2) conveyed, for example, is sequentially sent to a solution treatment process, a quenching process, and an aging process, subjected to a predetermined process in each process, and finally sent to an inspection process to be inspected. .

一方、除去したバリ（Ｆ）はバリ取り装置（３０）の上型（３２）上に残存しており（図１参照）、このバリ（Ｆ）を搬送装置（４０）のフィンガー（４２）で把持してバリ取り装置（３０）から所定場所（例：バリ回収箱）に排出する。このとき、バリ（Ｆ）は環状に残存しているから、バリ（Ｆ）のハンドリンク性が良く、したがってバリ（Ｆ）の排出操作を容易に行うことができる。   On the other hand, the removed burrs (F) remain on the upper mold (32) of the deburring device (30) (see FIG. 1), and the burrs (F) are removed by the fingers (42) of the transfer device (40). Grip and discharge from the deburring device (30) to a predetermined place (eg, burr collection box). At this time, since the burrs (F) remain in an annular shape, the burrs (F) have good hand linkability, and therefore the burrs (F) can be easily discharged.

而して、本実施形態の鍛造装置（１）を用いた鍛造方法には次の利点がある。   Thus, the forging method using the forging device (1) of the present embodiment has the following advantages.

すなわち、予備成形済み素材（Ｓ１）を鍛造成形することにより、鍛造品（Ｓ２）の外周にバリ（Ｆ）が鍛造品（Ｓ２）の外周の全周に亘って繋がった状態に形成されたバリ付き鍛造品（Ｓ２）を製造するので、このバリ付き鍛造品（Ｓ２）からバリ（Ｆ）を環状に除去することができる。これにより、バリ（Ｆ）を排出する際にバリ（Ｆ）のハンドリング性を向上させることができる。   That is, the burrs (F) formed on the outer periphery of the forged product (S2) are connected to the entire outer periphery of the forged product (S2) by forging the preformed material (S1). Since the forged product (S2) with a burr is manufactured, the burr (F) can be removed in an annular shape from the forged product (S2) with a burr. Thereby, the handling property of the burr (F) can be improved when the burr (F) is discharged.

さらに、予備成形済み素材（Ｓ１）の第１成形予定部（６１）の断面積は、鍛造金型（２１）の第１成形部（２３ａ）の断面積に対して同等以下に設定されているから、予備成形済み素材（Ｓ１）の第１成形予定部（６１）の体積をできる限り少なくすることができ、もって材料歩留まりを向上させることができる。   Furthermore, the cross-sectional area of the first forming part (61) of the preformed material (S1) is set to be equal to or less than the cross-sectional area of the first forming part (23a) of the forging die (21). Therefore, the volume of the first molding scheduled portion (61) of the preformed material (S1) can be reduced as much as possible, and the material yield can be improved.

さらに、本実施形態では、予備成形済み素材（Ｓ１）の第１成形予定部（６１）の幅方向両側縁部（６１ａ）（６１ａ）が上下各型（２２）（２２）の第１成形凹部（２４ａ）の幅方向両側にはみ出した状態に、上下両型（２２）（２２）の間に配置された予備成形済み素材（Ｓ１）を、その厚さ方向に上下両型（２２）（２２）で加圧することにより、素材（Ｓ１）の第２成形予定部（６２）の余肉材料を第２成形予定部（６２）から第１成形予定部（６１）に流動供給しながら予備成形済み素材（Ｓ１）を成形する。したがって、予備成形済み素材（Ｓ１）の成形時には、予備成形済み素材（Ｓ１）の第１成形予定部（６１）に第２成形予定部（６２）の余肉材料が供給されるので、予備成形済み素材（Ｓ１）の第１成形予定部（６１）に欠肉が発生するのを防止することができる。これにより、予備成形済み素材（Ｓ１）の第１成形予定部（６１）を設計形状（即ち膨出状）に確実に成形することができる。しかも、予備成形済み素材（Ｓ１）の第１成形予定部（６１）の幅方向両側縁部（６１ａ）（６１ａ）が上下各型（２２）（２２）の第１成形凹部（２４ａ）の幅方向両側にはみ出した状態に、予備成形済み素材（Ｓ１）が上下両型（２２）（２２）の間に配置されているので、バリ（Ｆ）を第１成形凹部（２４ａ）の幅方向両側に確実に張出させることができる。一方、もし仮に、第１成形予定部（６１）の幅方向両側縁部（６１ａ）（６１ａ）が第１成形凹部（２４ａ）の幅方向両側にはみ出さない状態に、予備成形済み素材（Ｓ１）が上下両型（２２）（２２）の間に配置されている場合には、バリ（Ｆ）を第１成形凹部（２４ａ）の幅方向両側に張出させることができないことがある。このようになると、バリ（Ｆ）が鍛造品（Ｓ２）の外周に鍛造品（Ｓ２）の周方向の全周に亘って繋がった状態に形成されず、その結果、バリ（Ｆ）を環状に除去することができなくなる。   Furthermore, in the present embodiment, both side edges (61a) and (61a) in the width direction of the first molding scheduled portion (61) of the preformed material (S1) are the first molding concave portions of the upper and lower molds (22) and (22). The preformed material (S1) disposed between the upper and lower molds (22) and (22) in a state of projecting to both sides in the width direction of (24a), the upper and lower molds (22) and (22) in the thickness direction. ) Is preliminarily molded while fluidly supplying the surplus material of the second molding scheduled portion (62) of the material (S1) from the second molding planned portion (62) to the first molding planned portion (61). A material (S1) is formed. Therefore, when the preformed material (S1) is molded, the surplus material of the second molding scheduled portion (62) is supplied to the first molding planned portion (61) of the preformed material (S1), so that the preforming is performed. It is possible to prevent the occurrence of a lack of thickness in the first molding scheduled portion (61) of the finished material (S1). Thereby, the 1st shaping | molding scheduled part (61) of a preformed raw material (S1) can be shape | molded reliably to a design shape (namely, bulging shape). Moreover, the widthwise side edges (61a) and (61a) of the first molding scheduled part (61) of the preformed material (S1) are the widths of the first molding recesses (24a) of the upper and lower molds (22) and (22). Since the preformed material (S1) is disposed between the upper and lower molds (22) and (22) in a state of protruding to both sides in the direction, the burr (F) is disposed on both sides in the width direction of the first molding recess (24a). Can be reliably extended. On the other hand, if the widthwise side edges (61a) and (61a) of the first molding scheduled portion (61) do not protrude from the widthwise sides of the first molding recess (24a), the preformed material (S1 ) Is disposed between the upper and lower molds (22) and (22), the burrs (F) may not be able to project on both sides in the width direction of the first molding recess (24a). If it becomes like this, a burr | flash (F) will not be formed in the state connected to the outer periphery of a forged product (S2) over the perimeter of the circumferential direction of a forged product (S2), As a result, a burr | flash (F) is cyclically formed. It cannot be removed.

而して、本実施形態では、予備成形済み素材（Ｓ１）の第１成形予定部（６１）の断面積は、鍛造金型（２１）の成形空間（２３）の第１成形部（２３ａ）の断面積に対して同等以下に設定されているが、本発明では、第１成形予定部（６１）の断面積は第１成形部（２３ａ）の断面積に対して１０５％以下に設定されるのが特に望ましい。こうすることにより、予備成形済み素材（Ｓ１）の第１成形予定部（６１）に欠肉が発生するのを確実に防止することができるし、更に、バリ（Ｆ）を第１成形凹部（２４ａ）の幅方向両側に更に確実に張出させることができる。   Thus, in the present embodiment, the cross-sectional area of the first molding scheduled portion (61) of the preformed material (S1) is the first molding portion (23a) of the molding space (23) of the forging die (21). However, in the present invention, the cross-sectional area of the first molding part (61) is set to 105% or less with respect to the cross-sectional area of the first molding part (23a). It is particularly desirable. By doing so, it is possible to surely prevent the occurrence of a lack of thickness in the first molding scheduled portion (61) of the preformed material (S1), and further, the burr (F) is formed into the first molding concave portion ( 24a) can be more reliably extended to both sides in the width direction.

以上で本発明の一実施形態について説明したが、本発明は上記実施形態に示したものであることに限定されるものではなく、様々に変更可能である。   Although one embodiment of the present invention has been described above, the present invention is not limited to that shown in the above embodiment, and various modifications can be made.

例えば、上記実施形態では、鍛造装置（１）は、本成形装置（１０）と、その他に予備成形装置（１０）及びバリ取り装置（３０）を備えたものであるが、本発明では、鍛造装置（１）は必ずしも予備成形装置（１０）やバリ取り装置（３０）を備えていなくても良い。   For example, in the above embodiment, the forging device (1) includes the main forming device (10), and in addition, the pre-forming device (10) and the deburring device (30). The device (1) does not necessarily have to include the preforming device (10) and the deburring device (30).

また、本発明では、鍛造装置（１）により鍛造成形されるバリ付き鍛造品（Ｓ２）の形状は特に限定されるものではない。   Moreover, in this invention, the shape of the forged product (S2) with a burr | flash forged by the forging apparatus (1) is not specifically limited.

本発明は、バリ付き鍛造品を製造する鍛造方法及び該鍛造方法に用いられる鍛造装置に利用可能である。   INDUSTRIAL APPLICABILITY The present invention can be used for a forging method for producing a forged product with burrs and a forging apparatus used in the forging method.

図１は、本発明の一実施形態に係る鍛造装置の概略平面図である。FIG. 1 is a schematic plan view of a forging device according to an embodiment of the present invention. 図２は、同鍛造装置の概略正面図である。FIG. 2 is a schematic front view of the forging device. 図３は、同鍛造装置における本成形装置の鍛造金型の断面図である。FIG. 3 is a sectional view of the forging die of the main forming apparatus in the forging apparatus. 図４は、同鍛造金型の下型の平面図である。FIG. 4 is a plan view of the lower die of the forging die. 図５は、図４中のＸ−Ｘ線位置に対応する、鍛造金型及び素材の第１成形予定部の断面図である。FIG. 5 is a cross-sectional view of the forging die and the first molding scheduled portion of the material corresponding to the position of line XX in FIG. 図６は、図４中のＹ−Ｙ線位置に対応する、鍛造金型及び素材の第２成形予定部の断面図である。FIG. 6 is a cross-sectional view of the forging die and the second molding scheduled portion of the material corresponding to the YY line position in FIG. 4. 図７は、鍛造金型の下型に素材を配置した成形前の状態の平面図である。FIG. 7 is a plan view of a state before molding in which a material is arranged in the lower mold of the forging die. 図８は、鍛造金型の下型に素材を配置した成形後の状態の平面図である。FIG. 8 is a plan view of a state after molding in which a material is arranged in the lower mold of the forging die. 図９Ａは、同鍛造金型の上型と下型との間に素材を配置した状態における、図７中のＸ−Ｘ線位置に対応する、鍛造金型及び素材の第１成形予定部の断面図である。FIG. 9A shows a forging die and a first molding scheduled portion of the material corresponding to the position of line XX in FIG. 7 in a state where the material is arranged between the upper die and the lower die of the forging die. It is sectional drawing. 図９Ｂは、素材を加圧する途中の状態における、図７中のＸ−Ｘ線位置に対応する、鍛造金型及び素材の第１成形予定部の断面図である。FIG. 9B is a cross-sectional view of a forging die and a first molding scheduled portion of the material corresponding to the position of line XX in FIG. 7 in a state where the material is being pressurized. 図９Ｃは、素材を加圧した後の状態における、図８中のＸ−Ｘ線位置に対応する、鍛造金型及び素材の第１成形予定部の断面図である。FIG. 9C is a cross-sectional view of the forging die and the first molding scheduled portion of the material corresponding to the position of line XX in FIG. 8 in a state after the material is pressurized. 図１０は、同鍛造装置を用いた鍛造方法の各工程を説明するための、素材の斜視図である。FIG. 10 is a perspective view of the material for explaining each step of the forging method using the forging device.

符号の説明Explanation of symbols

１…鍛造装置
１０…予備成形装置
２０…本成形装置（本成形用鍛造装置）
２１…鍛造金型
２２…上型及び下型
２３…成形空間
２３ａ…第１成形部
２３ｂ…第２成形部
２４ａ…第１成形凹部（成形凹部）
２４ｂ…第２成形凹部
３０…バリ取り装置
４０…搬送装置
Ｓ０…素材
Ｓ１…予備成形済み素材（素材）
６１…第１成形予定部
６１ａ…第１成形予定部の幅方向両側縁部
６２…第２成形予定部
Ｓ２…バリ付き鍛造品（本成形済み素材）
Ｆ…バリ DESCRIPTION OF SYMBOLS 1 ... Forging apparatus 10 ... Pre-forming apparatus 20 ... Main forming apparatus (Forging apparatus for main forming)
21 ... Forging die 22 ... Upper die and lower die 23 ... Molding space 23a ... First molding part 23b ... Second molding part 24a ... First molding recess (molding recess)
24b ... 2nd shaping | molding recessed part 30 ... Deburring apparatus 40 ... Conveyance apparatus S0 ... Material S1 ... Pre-formed material (material)
61 ... 1st shaping | molding scheduled part 61a ... The width direction both sides edge part 62 of the 1st shaping | molding scheduled part ... 2nd shaping | molding scheduled part S2 ... Forged product with a burr | flash (finally molded material)
F ... Bali

Claims (10)

互いに閉じ合わされた状態で内部に成形空間が形成される一対の型から構成された鍛造金型を用いて、素材を鍛造成形することにより、鍛造品の外周にバリが鍛造品の外周の全周に亘って繋がった状態に形成されたバリ付き鍛造品を製造する鍛造方法であって、
鍛造品は、その長さ方向に互いに隣接する径大部及び径小部を含んでおり、
鍛造金型の成形空間は、その長さ方向に互いに隣接する第１成形部及び第２成形部を含んでおり、
素材は、鍛造金型の第１成形部及び第２成形部にそれぞれ対応する、互いに隣接する第１成形予定部及び第２成形予定部を含むとともに、第１成形予定部は第１成形部で鍛造品の径大部に成形される予定の部位であり、第２成形予定部は第２成形部で鍛造品の径小部に成形される予定の部位であり、
素材の第１成形予定部の断面積は、鍛造金型の第１成形部の断面積に対して１００％以下に設定されるとともに、
素材の第１成形予定部の幅は、各型における第１成形部に対応する成形凹部の幅よりも大きく設定されており、
素材の第２成形予定部の断面積は、鍛造金型の第２成形部の断面積よりも大きく設定されており、
素材の第１成形予定部の幅方向両側縁部が各型の成形凹部の幅方向両側にはみ出した状態に、両方の型の間に配置された素材を、その厚さ方向に両方の型で加圧することにより、素材の第２成形予定部の余肉材料を第２成形予定部から第１成形予定部に流動供給しながら素材を成形することを特徴とする鍛造方法。 By forging the material using a forging die composed of a pair of molds in which a molding space is formed inside in a state of being mutually closed, burrs are formed on the outer periphery of the forged product. A forging method for producing a forged product with burrs formed in a connected state,
The forged product includes a large diameter portion and a small diameter portion adjacent to each other in the length direction thereof,
The molding space of the forging die includes a first molding part and a second molding part that are adjacent to each other in the length direction thereof.
The material includes a first molding scheduled portion and a second molding scheduled portion that are adjacent to each other and correspond to the first molding portion and the second molding portion of the forging die, respectively, and the first molding scheduled portion is the first molding portion. It is a part that is scheduled to be molded to the large diameter part of the forged product, and the second molding scheduled part is a part that is scheduled to be molded to the small diameter part of the forged product at the second molded part,
The cross-sectional area of the first molding planned portion of the material is set to 100% or less with respect to the cross-sectional area of the first molding portion of the forging die,
The width of the first molding planned portion of the material is set to be larger than the width of the molding concave portion corresponding to the first molding portion in each mold,
The cross-sectional area of the second molding planned portion of the material is set larger than the cross-sectional area of the second molding portion of the forging die,
The material placed between both molds with both side edges in the width direction of the first molding planned portion of the material protruding to both sides in the width direction of the molding recess of each mold in both molds in the thickness direction A forging method characterized in that, by pressurizing, the material is molded while the surplus material of the second molding scheduled portion of the material is supplied from the second molding scheduled portion to the first molding scheduled portion. 素材の第１成形予定部の断面積は、鍛造金型の第１成形部の断面積に対して９０％以上に設定されている請求項１記載の鍛造方法。 2. The forging method according to claim 1, wherein a cross-sectional area of the first forming portion of the material is set to 90% or more with respect to a cross-sectional area of the first forming portion of the forging die. 互いに閉じ合わされた状態で内部に成形空間が形成される一対の型から構成された鍛造金型を用いて、素材を鍛造成形することにより、鍛造品の外周にバリが鍛造品の外周の全周に亘って繋がった状態に形成されたバリ付き鍛造品を製造する、鍛造装置であって、
鍛造品は、その長さ方向に互いに隣接する径大部及び径小部を含んでおり、
鍛造金型の成形空間は、その長さ方向に互いに隣接する第１成形部及び第２成形部を含んでおり、
素材は、鍛造金型の第１成形部及び第２成形部にそれぞれ対応する、互いに隣接する第１成形予定部及び第２成形予定部を含むとともに、第１成形予定部は第１成形部で鍛造品の径大部に成形される予定の部位であり、第２成形予定部は第２成形部で鍛造品の径小部に成形される予定の部位であり、
素材の第１成形予定部の断面積は、鍛造金型の第１成形部の断面積に対して１００％以下に設定されるとともに、
素材の第１成形予定部の幅は、各型における第１成形部に対応する成形凹部の幅よりも大きく設定されており、
素材の第２成形予定部の断面積は、鍛造金型の第２成形部の断面積よりも大きく設定されており、
素材の第１成形予定部の幅方向両側縁部が各型の成形凹部の幅方向両側にはみ出した状態に、両方の型の間に配置された素材を、その厚さ方向に両方の型で加圧するものとなされていることを特徴とする特徴とする鍛造装置。 By forging the material using a forging die composed of a pair of molds in which a molding space is formed inside in a state of being mutually closed, burrs are formed on the outer periphery of the forged product. A forging device for producing a forged product with a burr formed in a connected state,
The forged product includes a large diameter portion and a small diameter portion adjacent to each other in the length direction thereof,
The molding space of the forging die includes a first molding part and a second molding part that are adjacent to each other in the length direction thereof.
The material includes a first molding scheduled portion and a second molding scheduled portion that are adjacent to each other and correspond to the first molding portion and the second molding portion of the forging die, respectively, and the first molding scheduled portion is the first molding portion. It is a part that is scheduled to be molded to the large diameter part of the forged product, and the second molding scheduled part is a part that is scheduled to be molded to the small diameter part of the forged product at the second molded part,
The cross-sectional area of the first molding planned portion of the material is set to 100% or less with respect to the cross-sectional area of the first molding portion of the forging die,
The width of the first molding planned portion of the material is set to be larger than the width of the molding concave portion corresponding to the first molding portion in each mold,
The cross-sectional area of the second molding planned portion of the material is set larger than the cross-sectional area of the second molding portion of the forging die,
The material placed between both molds with both side edges in the width direction of the first molding planned portion of the material protruding to both sides in the width direction of the molding recess of each mold in both molds in the thickness direction A forging device characterized by being configured to pressurize. 素材の第１成形予定部の断面積は、鍛造金型の第１成形部の断面積に対して９０％以上に設定されている請求項３記載の鍛造装置。 The forging device according to claim 3, wherein a cross-sectional area of the first forming portion of the material is set to 90% or more with respect to a cross-sectional area of the first forming portion of the forging die. 素材を予備成形する予備成形装置と、
予備成形装置により予備成形された予備成形済み素材を本成形する本成形装置と、
素材を予備成形装置及び本成形装置に順次搬送する搬送装置と、を備えた鍛造装置を用いた鍛造方法であって、
本成形装置は、互いに閉じ合わされた状態で内部に成形空間が形成される一対の型から構成された鍛造金型を用いて、素材成形済み素材を鍛造成形することにより、鍛造品の外周にバリが鍛造品の外周の全周に亘って繋がった状態に形成されたバリ付き鍛造品を製造するものであり、
鍛造品は、その長さ方向に互いに隣接する径大部及び径小部を含んでおり、
鍛造金型の成形空間は、その長さ方向に互いに隣接する第１成形部及び第２成形部を含んでおり、
予備成形済み素材は、鍛造金型の第１成形部及び第２成形部にそれぞれ対応する、互いに隣接する第１成形予定部及び第２成形予定部を含むとともに、第１成形予定部は第１成形部で鍛造品の径大部に成形される予定の部位であり、第２成形予定部は第２成形部で鍛造品の径小部に成形される予定の部位であり、
予備成形済み素材の第１成形予定部の断面積は、鍛造金型の第１成形部の断面積に対して１００％以下に設定されるとともに、
予備成形済み素材の第１成形予定部の幅は、各型における第１成形部に対応する成形凹部の幅よりも大きく設定されており、
予備成形済み素材の第２成形予定部の断面積は、鍛造金型の第２成形部の断面積よりも大きく設定されており、
予備成形済み素材の第１成形予定部の幅方向両側縁部が各型の成形凹部の幅方向両側にはみ出した状態に、両方の型の間に配置された予備成形済み素材を、その厚さ方向に両方の型で加圧することにより、予備成形済み素材の第２成形予定部の余肉材料を第２成形予定部から第１成形予定部に流動供給しながら予備成形済み素材を成形することを特徴とする鍛造方法。 A preforming device for preforming the material;
A main forming apparatus for main forming a preformed material preformed by the pre-forming apparatus;
A forging method using a forging device comprising a preforming device and a conveying device that sequentially conveys the material to the main forming device,
This molding device uses a forging die composed of a pair of molds in which molding spaces are formed inside in a state of being closed to each other. Is a forged product with a burr formed in a connected state over the entire circumference of the forged product,
The forged product includes a large diameter portion and a small diameter portion adjacent to each other in the length direction thereof,
The molding space of the forging die includes a first molding part and a second molding part that are adjacent to each other in the length direction thereof.
The preformed material includes a first molding scheduled portion and a second molding scheduled portion that are adjacent to each other and correspond to the first molding portion and the second molding portion of the forging die, respectively, and the first molding scheduled portion is the first molding portion. It is a part that is planned to be formed into a large diameter part of the forged product at the formed part, and a second part that is planned to be formed is a part that is scheduled to be formed into a small part of the forged product at the second formed part,
The cross-sectional area of the first molding scheduled part of the preformed material is set to 100% or less with respect to the cross-sectional area of the first molding part of the forging die,
The width of the first molding planned portion of the preformed material is set to be larger than the width of the molding concave portion corresponding to the first molding portion in each mold,
The cross-sectional area of the second molding scheduled part of the preformed material is set larger than the cross-sectional area of the second molding part of the forging die,
The thickness of the preformed material arranged between both molds in such a state that both side edges in the width direction of the first molding target portion of the preformed material protrude on both sides in the width direction of the molding concave portion of each mold. By pressing both molds in the direction, the preformed material is molded while the surplus material of the second molding scheduled portion of the preformed material is fluidly supplied from the second molding scheduled portion to the first molding scheduled portion. A forging method characterized by 予備成形済み素材の第１成形予定部の断面積は、鍛造金型の第１成形部の断面積に対して９０％以上に設定されている請求項５記載の鍛造方法。 The forging method according to claim 5, wherein the cross-sectional area of the first forming portion of the preformed material is set to 90% or more with respect to the cross-sectional area of the first forming portion of the forging die. 鍛造装置は、さらに、本成形装置により本成形されたバリ付き鍛造品からバリを除去するバリ取り装置を備えており、
搬送装置は、素材を予備成形装置、本成形装置及びバリ取り装置に順次搬送するものである請求項５又は６記載の鍛造方法。 The forging device further includes a deburring device for removing burrs from the forged product with burr formed by the main forming device.
The forging method according to claim 5 or 6, wherein the conveying device sequentially conveys the material to a preforming device, a main forming device, and a deburring device. 素材を予備成形する予備成形装置と、
予備成形装置により予備成形された予備成形済み素材を本成形する本成形装置と、
素材を予備成形装置及び本成形装置に順次搬送する搬送装置と、を備えた鍛造装置であって、
本成形装置は、互いに閉じ合わされた状態で内部に成形空間が形成される一対の型から構成された鍛造金型を用いて、予備成形済み素材を鍛造成形することにより、鍛造品の外周にバリが鍛造品の外周の全周に亘って繋がった状態に形成されたバリ付き鍛造品を製造するものであり、
鍛造品は、その長さ方向に互いに隣接する径大部及び径小部を含んでおり、
鍛造金型の成形空間は、その長さ方向に互いに隣接する第１成形部及び第２成形部を含んでおり、
予備成形済み素材は、鍛造金型の第１成形部及び第２成形部にそれぞれ対応する、互いに隣接する第１成形予定部及び第２成形予定部を含むとともに、第１成形予定部は第１成形部で鍛造品の径大部に成形される予定の部位であり、第２成形予定部は第２成形部で鍛造品の径小部に成形される予定の部位であり、
予備成形済み素材の第１成形予定部の断面積は、鍛造金型の第１成形部の断面積に対して１００％以下に設定されるとともに、
予備成形済み素材の第１成形予定部の幅は、各型における第１成形部に対応する成形凹部の幅よりも大きく設定されており、
予備成形済み素材の第２成形予定部の断面積は、鍛造金型の第２成形部の断面積よりも大きく設定されており、
本成形装置は、予備成形済み素材の第１成形予定部の幅方向両側縁部が各型の成形凹部の幅方向両側にはみ出した状態に、両方の型の間に配置された予備成形済み素材を、その厚さ方向に両方の型で加圧するものとなされていることを特徴とする鍛造装置。 A preforming device for preforming the material;
A main forming apparatus for main forming a preformed material preformed by the pre-forming apparatus;
A forging apparatus comprising a preforming apparatus and a conveying apparatus that sequentially conveys the raw material to the main forming apparatus,
This molding apparatus uses a forging die composed of a pair of molds in which molding spaces are formed inside in a state of being closed to each other, forging a preformed material, thereby forming a burring on the outer periphery of the forged product. Is a forged product with a burr formed in a connected state over the entire circumference of the forged product,
The forged product includes a large diameter portion and a small diameter portion adjacent to each other in the length direction thereof,
The molding space of the forging die includes a first molding part and a second molding part that are adjacent to each other in the length direction thereof.
The preformed material includes a first molding scheduled portion and a second molding scheduled portion that are adjacent to each other and correspond to the first molding portion and the second molding portion of the forging die, respectively, and the first molding scheduled portion is the first molding portion. It is a part that is planned to be formed into a large diameter part of the forged product at the formed part, and a second part that is planned to be formed is a part that is scheduled to be formed into a small part of the forged product at the second formed part,
The cross-sectional area of the first molding scheduled part of the preformed material is set to 100% or less with respect to the cross-sectional area of the first molding part of the forging die,
The width of the first molding planned portion of the preformed material is set to be larger than the width of the molding concave portion corresponding to the first molding portion in each mold,
The cross-sectional area of the second molding scheduled part of the preformed material is set larger than the cross-sectional area of the second molding part of the forging die,
This molding apparatus is a preformed material disposed between both molds in such a state that both side edges in the width direction of the first molding scheduled portion of the preformed material protrude from both sides in the width direction of the molding recess of each mold. The forging device is characterized in that it is pressed with both dies in the thickness direction. 予備成形済み素材の第１成形予定部の断面積は、鍛造金型の第１成形部の断面積に対して９０％以上に設定されている請求項８記載の鍛造装置。 The forging device according to claim 8, wherein the cross-sectional area of the first forming portion of the preformed material is set to 90% or more with respect to the cross-sectional area of the first forming portion of the forging die. さらに、本成形装置により本成形されたバリ付き鍛造品からバリを除去するバリ取り装置を備えており、
搬送装置は、素材を予備成形装置、本成形装置及びバリ取り装置に順次搬送するものである請求項８又は９記載の鍛造装置。 Furthermore, it is equipped with a deburring device that removes burrs from the forged product with burr formed by the main forming device.
The forging device according to claim 8 or 9, wherein the conveying device sequentially conveys the material to the preforming device, the main forming device, and the deburring device.
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