JPS60261627A - Punching and piercing device in upsetter - Google Patents

Abstract

PURPOSE:To align a punch and a punched hole exactly by providing firmly a guide member provided with a guide hole, onto a punched hole of a die of an upset die, at an interval of a gap in which a product can be set, and providing a punch so as to be freely slidable in the horizontal direction, on a punch. CONSTITUTION:A positioning piece 6 for abutting the inside bottom part of a product 1, and a bush 5 on which a punched hole 8 passing through a recessed part 7 has been formed are provided firmly on a die 3 of an upset die, and a funnel-shaped guide hole 11 concentrical with the punched hole 8 is provided on a guide member 10. A punch 13 is made freely slidable by providing a guide rail 12 being in parallel to an operating direction A of a swaging die, on a punch 4. When the product 1 is set and the punch 4 is subjected to rolling reduction, the punch 13 slide-contacts the guide roll 11 and descends concentrically with the punched hole 8, and a prescribed fitting hole 2 is punched and pierced on the product 1. In this way, the punch aligns exactly with the punched hole and a good pierced state is obtained.

Description

【発明の詳細な説明】 ［産業上の利用分野］ 本発明はすえ込み鍛造に使われるアプセツタに関し、さ
らに詳しくはそのグリップ機構によって素材を打ち抜い
て穿孔せんとする装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an upsetter used in swaging forging, and more particularly to an apparatus for punching out a material using its grip mechanism.

［従来の技術］ 上下グリップ式アプセツタは、周知のように、下型と上
型とよりなるグリップダイにより素材を挟着し、その素
材に対し水平方向からすえ込み型を圧入するように構成
された複動プレス機械であす、複数な形状の型録製品が
製造できるため広く使用されている。[Prior Art] As is well known, a vertical grip type upsetter is constructed so that a material is clamped by a grip die consisting of a lower die and an upper die, and a swaging die is press-fitted into the material from a horizontal direction. This double-acting press machine is widely used because it can produce molded products in multiple shapes.

［発明が解決しようとする問題点］ 」二記アプセツタにおけるグリップダイのト型に抜孔を
形成し、上型に該抜孔と相対するポンチ表固設して、素
材を打抜穿孔しようとすると、上型はすえ込み型が水平
方向から強力に圧入される関係上、横ずれを起こし、上
型ポンチが下型抜孔に正確に合致し難いものであった。[Problems to be Solved by the Invention] When attempting to punch and perforate a material by forming a punching hole in the shape of the grip die in the above-mentioned upsetter and fixing a punch face opposite to the punching hole on the upper die, Because the upper die was forcefully pressed in from the horizontal direction, the upper die would shift laterally, making it difficult for the upper die punch to align accurately with the lower die hole.

このためアプセツタを用いての穿孔加工は、上型のポン
チ径に対して下型の抜孔径をかなり大きくしておかなけ
れば不合致により抜孔にキズを付けたりポンチを折損す
るおそれがあった。ところがそのようにポンチ径に対し
抜孔径が大きいと製品の穿孔がきたな　。For this reason, in drilling using an upsetter, unless the punching hole diameter of the lower mold is made considerably larger than the punch diameter of the upper mold, there is a risk of scratching the punching hole or breaking the punch due to mismatch. However, if the hole diameter is larger than the punch diameter, the product may become perforated.

くなるという問題点があった。There was a problem that it became.

［問題点を解決するための手段］ グリップダイの下型に抜孔を形成し、案内孔が形成され
たガイド部材を前記抜孔−しに製品がセ、ットできる間
隙を隔てて固設し、該グリップダイの上型には前記抜孔
と相対するポンチ髪横方向にスライト自在に設ける。[Means for solving the problem] A punching hole is formed in the lower mold of the grip die, and a guide member in which a guide hole is formed is fixed in the punching hole with a gap that allows the product to be set. The upper mold of the grip die is provided so as to be able to slide freely in the lateral direction of the punch hair opposite to the punching hole.

［作用］ 上型が下降するときポンチは案内孔にガイドされ抜孔と
の合致位置に確実にスライドする。[Operation] When the upper die is lowered, the punch is guided by the guide hole and slides securely to the position where it matches the punching hole.

［実施例］ 第４図に示した型録製品１は、ブルドーザ−。[Example] The model product 1 shown in FIG. 4 is a bulldozer.

ショベ、ルドーザー等の土木建設車両のシャンク先端に
装着され、硬土や岩盤等の掘り起こしに用いられる建機
用たがね（リッパ−ポイン＋−と称される。）であり、
形状が複雑であり十分な耐摩耗性と耐衝撃性が要求され
ることからアブセンタによりすえ込み鍛造され、成形後
にその取付用孔２゜２を同じアブセンタのグリップダイ
を利用して打　□抜穿孔する。第１図において、３，４
はこのアブセンタにおけるグリップダイの下型および上
型で、このアブセンタではすえ込み型（図示せず）は矢
印Ａで示した水平方向に作動する。しかして、下型３の
一部に固設された入れ子５は、製品１を定□、１ 譬　位置にセラ１へできるように製品１の内底部に当接
する位置決め片６、凹欠部７が形成されているはか、」
二面から該凹欠部７に貫く抜孔８が形成されている。抜
孔８の形状は製品１の所要孔形状に合致しこの場合長円
形である。抜孔８の上端開口縁にはその部分を摩耗から
保護するため環状エツジ９が嵌着されている。１０は該
抜孔８上に製品１の孔明部位がセットできる間隙が形成
されるようにして入れ子５より一体なるように延設され
たガイド部材で、該ガイ１４部材には抜孔８と軸心が一
致する漏斗状の案内孔１１を形成する。なお案内孔１１
の小径部の内径が抜孔８の開口縁の内径と略一致するよ
うに設定される。一方、上型４には矢印Ａで示したすえ
込み型の作動方向と平行なるガイドレール１２を固着す
る。ガイドレールには第２図に示したように断面がアリ
溝状でこれに前記抜孔８と相対するポンチ１３をスライ
ド自在に設ける。１４はポンチ１３の先端外周縁に嵌着
した環状エツジを示す。このため、製品１を図示したよ
うにセットし」二型４を圧下させることで、ポンチ１３
はその先端が案内孔１１の内壁に摺接しスライドさせら
れて抜孔８の軸心に合致し製品１に所定の取付用孔２３
− を打抜穿孔できる。即ち、上型４はすえ込み型が作動す
る関係上矢印へ方向に横ずれを起こし易いが、ポンチ１
３はその方向にスライド自在に設けられていて圧下時に
は下型３に固設されたガイド部材１０の作用により常に
抜孔８の軸心と合致せられる。A construction machine chisel (referred to as a ripper point) that is attached to the tip of the shank of a civil engineering construction vehicle such as an excavator or rudozer and is used for digging up hard soil, bedrock, etc.
Because the shape is complex and requires sufficient wear resistance and impact resistance, it is swage-forged using an abscenter, and after forming, the mounting hole 2°2 is punched using the grip die of the same abscenter. do. In Figure 1, 3, 4
are the lower and upper dies of the grip die in this abscenter, and the swaging dies (not shown) in this abscenter operate in the horizontal direction indicated by arrow A. Thus, the nest 5 fixed to a part of the lower mold 3 has a positioning piece 6 and a recessed notch 7 that come into contact with the inner bottom of the product 1 so that the product 1 can be placed in the fixed position. Is it forming?
A punching hole 8 is formed that penetrates the recessed notch 7 from two sides. The shape of the punched hole 8 matches the required hole shape of the product 1, and in this case is oval. An annular edge 9 is fitted to the upper opening edge of the extraction hole 8 to protect that portion from wear. Reference numeral 10 denotes a guide member extending integrally with the insert 5 so as to form a gap in which the perforated part of the product 1 can be set above the extraction hole 8. A matching funnel-shaped guide hole 11 is formed. Note that guide hole 11
The inner diameter of the small diameter portion is set to approximately match the inner diameter of the opening edge of the extraction hole 8. On the other hand, a guide rail 12 that is parallel to the operating direction of the swaging die shown by arrow A is fixed to the upper die 4. As shown in FIG. 2, the guide rail has a dovetail-shaped cross section, and a punch 13 facing the punch hole 8 is slidably provided thereon. Reference numeral 14 indicates an annular edge fitted to the outer peripheral edge of the tip of the punch 13. Therefore, by setting the product 1 as shown in the figure and lowering the second mold 4, the punch 13
The tip thereof slides into contact with the inner wall of the guide hole 11 and is aligned with the axis of the extraction hole 8, so that it is attached to the product 1 in the predetermined mounting hole 23.
- Can be punched and drilled. That is, the upper die 4 tends to shift laterally in the direction of the arrow because the swaging die operates, but the punch 1
3 is provided so as to be slidable in that direction, and is always aligned with the axis of the extraction hole 8 by the action of a guide member 10 fixed to the lower mold 3 during rolling down.

［発明の効果］ 上型が横ずれしてもポンチと抜孔とは確実に合致しポン
チ等の破損もなく穿孔作業が遂行できる。[Effects of the Invention] Even if the upper mold deviates laterally, the punch and the punching hole are reliably aligned, and the punching work can be performed without damaging the punch or the like.

このためポンチ径と抜孔径とのはめ合い公差も少なくて
よくアブセンタを利用しても常にきれいな穿孔状態が得
られる有益なものである。For this reason, the fitting tolerance between the punch diameter and the punched hole diameter is small, and even when an abscenter is used, a clean drilling condition can always be obtained, which is advantageous.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明の実施例を示したアブセンタにおける打
抜穿孔装置の縦断面図、第２図はその■−ｒｒ線断面図
、第３図は第１図の作動状態を示した縦断面図、第４図
は型録造品の一例を示した斜視図である。 １・・・・製品、３・・・・下型、４・・・・上型、８
・・・・抜孔、１０・・・・ガイド部材、１１・・・・
案内孔、１２・・・・４− ガイドレール、】３・・・・ポンチ 特許出願人　大同特殊鋼株式会社 第１図 第２図 第３図 、、Ｆ　、　、　′ ゛　、＼Fig. 1 is a longitudinal sectional view of a punching and perforating device in an abscenter showing an embodiment of the present invention, Fig. 2 is a sectional view taken along the line ■-rr, and Fig. 3 is a longitudinal sectional view showing the operating state of Fig. 1. FIG. 4 is a perspective view showing an example of a molded product. 1...Product, 3...Lower mold, 4...Upper mold, 8
...Drilling hole, 10...Guide member, 11...
Guide hole, 12...4- Guide rail,]3...Punch Patent applicant Daido Steel Co., Ltd. Figure 1 Figure 2 Figure 3, , F , , ′゛ ,\

Claims (1)

【特許請求の範囲】[Claims] グリップダイの下型に抜孔を形成し、案内孔が形成され
たガイド部材を前記抜孔上に製品がセットできる間隙を
隔てて固設し、該グリップダイの上型には前記抜孔と相
対するポンチを横方向にスライド自在なるように設けた
ことを特徴とするアプセッタの打抜穿孔装置。A punching hole is formed in the lower mold of the grip die, a guide member with a guide hole is fixed on the punching hole with a gap that allows the product to be set, and a punch facing the punching hole is formed in the upper mold of the grip die. An upsetter punching and perforating device, characterized in that the upsetter is provided so as to be slidable laterally.