JPH0699300A - Press - Google Patents

Press

Info

Publication number
JPH0699300A
JPH0699300A JP27650992A JP27650992A JPH0699300A JP H0699300 A JPH0699300 A JP H0699300A JP 27650992 A JP27650992 A JP 27650992A JP 27650992 A JP27650992 A JP 27650992A JP H0699300 A JPH0699300 A JP H0699300A
Authority
JP
Japan
Prior art keywords
tie rods
press machine
ram
internal stress
load
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.)
Granted
Application number
JP27650992A
Other languages
Japanese (ja)
Other versions
JPH07108479B2 (en
Inventor
Masao Nakagawa
川 政 夫 中
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nisshinbo Holdings Inc
Original Assignee
Nisshinbo Industries Inc
Nisshin Spinning Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nisshinbo Industries Inc, Nisshin Spinning Co Ltd filed Critical Nisshinbo Industries Inc
Priority to JP4276509A priority Critical patent/JPH07108479B2/en
Publication of JPH0699300A publication Critical patent/JPH0699300A/en
Publication of JPH07108479B2 publication Critical patent/JPH07108479B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B30PRESSES
    • B30BPRESSES IN GENERAL
    • B30B15/00Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/04Frames; Guides
    • B30B15/041Guides

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Presses And Accessory Devices Thereof (AREA)

Abstract

PURPOSE:To prevent the generation of an internal stress caused by the dispersion of the length of tie rods and to improve the dynamic press precision by arranging the tie rods at the vertexes of a triangle. CONSTITUTION:In a machine, tie rods 1 are arranged at three places of the vertexes of an almost regular triangle, and a ram 5 is driven between an upper side fixing plate 2 and a lower side fixing plate 3 by a hydraulic cylinder 6. Even if an eccentric load is applied in the process of pressing, because this whole load is received with three tie rods 1, the internal stress except the compression force with the pressing force is not generated, and the load can always be supported dynamically in a remarkably stable shape. In such a way, because the three tie rods are adopted in this way, the balance of the force is satisfactory, and not only the pressing can be executed with high precision, but also the machine is made low in cost and the space for installation can be saved.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、動的な精度が良好で、
精度の高いプレス加工を行うことの出来るプレス機械に
関するものである。
The present invention has good dynamic accuracy,
The present invention relates to a press machine capable of performing highly accurate press working.

【0002】[0002]

【従来の技術】従来、特に精度の高いプレス加工を行う
のに用いられていたプレス機械は、機械式,油圧式かに
よらず、ストレ−トサイドフレ−ム構造のプレス機械で
あり、ラムの四隅を案内して、ラムを上,下動させるよ
うになっている。即ち、従来のストレ−トサイドフレ−
ム構造の油圧式プレス機械は、図4及び図5に示すよう
に、ストレ−トサイドフレ−ムFの四隅の柱11の内側を
案内面11aに形成すると共に、油圧シリンダ12により駆
動されるラム13の四隅にスライドギブ13aを固定し、フ
レ−ムFの下部にボルスタ−14を設置して、油圧シリン
ダ12を駆動すれば、ラム13はそのスライドギブ13aを前
記柱1の案内面11aを摺動しながら、ボルスタ−14に向
け上下運動するようになっており、フレ−ムFは溶接構
造が採用されているのが通常である。
2. Description of the Related Art Conventionally, a press machine used for performing particularly high-precision press working is a press machine having a straight side frame structure regardless of whether it is a mechanical type or a hydraulic type. Guides you to move the ram up and down. That is, the conventional straight side frame
As shown in FIGS. 4 and 5, in the hydraulic press machine having a ram structure, the insides of the pillars 11 at the four corners of the straight side frame F are formed on the guide surface 11a, and the ram 13 driven by the hydraulic cylinder 12 is used. The slide gib 13a is fixed to the four corners of the frame, the bolster 14 is installed at the lower part of the frame F, and the hydraulic cylinder 12 is driven. Then, the ram 13 slides the slide gib 13a on the guide surface 11a of the pillar 1. While moving, it moves up and down toward the bolster 14, and the frame F usually has a welded structure.

【0003】また、上記のストレ−トサイドフレ−ム構
造のプレス機械のほかに、4本のタイロッドを用いて上
側固定プレ−トと下側固定プレ−トをナットで固定し、
ラムの四隅をタイロッドの外周面を案内面として摺動さ
せるようにした4柱式プレス機械も使用されている。
In addition to the press machine having the above straight side frame structure, four tie rods are used to fix the upper fixed plate and the lower fixed plate with nuts,
There is also used a four-column type press machine in which the four corners of the ram are slid using the outer peripheral surfaces of the tie rods as guide surfaces.

【0004】然し乍ら、上記のプレス機械は、それぞれ
に次のような問題点がある。即ち、従来のストレ−トサ
イドフレ−ム構造のプレス機械は、動的な精度をさほど
要求されないこともあって、一般に溶接構造が用いられ
ていたが、この溶接構造はかなり複雑な構造になってい
るため、実際にプレス加工中に発生させる加圧力が加え
られたときに、どのように変形するかを解析することが
困難であり、また、溶接時に発生する高熱により大きな
内部応力が発生するので、動的な精度を保証することは
出来なかった。JISの規定がなく、測定方法も困難で
あるとはいえ、実際のプレス加工では、プレス機械の動
的精度は加工製品の精度に直結しているので、製品の精
度を向上させるためには、プレス機械の動的精度の向上
を図る必要がある。
However, each of the above press machines has the following problems. That is, in the conventional press machine having the straight side frame structure, the welding structure is generally used because the dynamic accuracy is not so required, but the welding structure is considerably complicated. Therefore, it is difficult to analyze how it deforms when a pressing force actually generated during press working is applied, and since high heat generated during welding causes a large internal stress, It was not possible to guarantee dynamic accuracy. Although there is no JIS stipulation and the measuring method is difficult, in actual press working, the dynamic accuracy of the press machine is directly linked to the accuracy of the processed product, so in order to improve the accuracy of the product, It is necessary to improve the dynamic accuracy of the press machine.

【0005】一方、4柱式のプレス機械は、熱変形に無
縁なナットにより、上側固定プレ−トと下側固定プレ−
トを固定しているので、溶接による残留応力の発生は無
いわけであるが、4本のタイロッドはそれぞれに微小な
がら長さにバラツキがあるのが通常で、この長さの差に
より、ナットを締め付けたときに残留応力が発生するの
を防止することは出来ない。また、ラムに偏荷重が加わ
ったときには、1本のタイロッドが遊んだ状態となり、
3本のタイロッドで荷重を支持する状態となるので、大
きなズレが発生する。これは、長さが異なった4本脚の
机が安定しにくいのと同様で、特にこの場合、力を受け
ながら、4本の脚が伸び縮みするのに対応した動きをす
るので、常に4点で安定した支持を続けることは困難で
あり、何らかの解決策が望まれている。
On the other hand, the four-column type press machine uses a nut that is not affected by thermal deformation and uses an upper fixed plate and a lower fixed plate.
Since there is no residual stress due to welding, since the four tie rods are fixed, it is normal for the four tie rods to have slight variations in length. It is not possible to prevent residual stress from occurring when tightened. Also, when an eccentric load is applied to the ram, one tie rod is idle,
Since the load is supported by the three tie rods, a large deviation occurs. This is similar to that it is difficult for a four-legged desk of different lengths to stabilize. In this case, in particular, the movement of the four legs expands and contracts while receiving force, so it is always 4 It is difficult to maintain stable support in this respect, and some solution is desired.

【0006】[0006]

【発明が解決しようとする課題】本発明は、上述のよう
な従来技術に鑑み、動的な精度が良好で、精度の高いプ
レス加工を行うことの出来ると共に、複合化の可能なプ
レス機械を提供することを、その課題とするものであ
る。
SUMMARY OF THE INVENTION In view of the above-mentioned prior art, the present invention provides a press machine which has good dynamic accuracy and can perform press processing with high accuracy, and which can be compounded. The challenge is to provide.

【0007】[0007]

【課題を解決するための手段】本発明は上記課題を解決
することを目的としてなされたもので、その構成は、タ
イロッドに上側固定テ−ブルと下側固定テ−ブルをナッ
ト等により固定すると共に、油圧シリンダ等により駆動
されるラムを摺動自在に取り付け、ラメがタイロッドの
外周面を案内面として摺動し駆動されるタイプのプレス
機械において、タイロッドが、正三角形に近い三角形の
各頂点の位置に配置されていることを特徴とするもので
ある。
SUMMARY OF THE INVENTION The present invention has been made for the purpose of solving the above-mentioned problems, and its structure is to fix an upper fixed table and a lower fixed table to a tie rod with nuts or the like. In addition, in a press machine of a type in which a ram driven by a hydraulic cylinder or the like is slidably mounted, and the lame slides and drives with the outer peripheral surface of the tie rod as a guide surface, the tie rod has triangular vertices close to equilateral triangles. It is characterized in that it is arranged at the position of.

【0008】本発明の発明者は、上記課題を解決するた
め、研究を重ねた結果、実際にプレス加工を行っている
ときの動的精度を向上させるためには、静的精度を向上
させることが必要であることは勿論であるが、それ以上
に内部応力を少なくすることが重要であり、内部応力を
小さくすることによって、動的精度の向上を図ることが
出来ることを知得した。即ち、プレス機械に加圧力が発
生すると、内部応力は加圧力に比べ相対的に無視出来る
ほど小さいので、内部応力が無い状態に近くなる。つま
り、動的な精度を得るには、内部応力の無い状態での静
的精度を確保すれば良く、そのためには、ほぼ正三角形
の頂点の3箇所に、3本のタイロッドを配置することに
より、タイロッドの長さのバラツキに起因する内部応力
の発生を防止し、余分な内部応力が発生しないようにす
れば良いことを知得し、本発明を完成したのである。
The inventor of the present invention has conducted extensive research to solve the above problems, and as a result, in order to improve the dynamic accuracy during actual press working, the static accuracy should be improved. Needless to say, it is important to reduce the internal stress more than that, and it was learned that the dynamic accuracy can be improved by reducing the internal stress. That is, when a pressurizing force is generated in the press machine, the internal stress is relatively small as compared with the pressurizing force and can be ignored. In other words, in order to obtain dynamic accuracy, it is sufficient to ensure static accuracy without internal stress. To achieve this, by arranging three tie rods at three points at the vertices of an approximately equilateral triangle. The present invention has been completed, knowing that it is sufficient to prevent the generation of internal stress due to the variation in the length of the tie rod and prevent the generation of excess internal stress.

【0009】本発明プレス機械は、3本のタイロッドで
構成されているので、プレス加工を行っている間に偏荷
重が加えられても、3本のうちの1本が完全に力を受け
なくなるようなことは起こらず、加圧力による圧縮力以
外の内部応力が発生することも無く、動的に安定した形
で荷重を支持することが可能になるのである。
Since the press machine of the present invention is composed of three tie rods, even if an eccentric load is applied during the press working, one of the three tie rods will not receive the force completely. This does not occur, and internal stress other than the compressive force due to the applied pressure does not occur, and the load can be dynamically supported in a stable manner.

【0010】[0010]

【実施例】次に、本発明の実施の一例を図により説明す
る。図1は本発明プレス機械の一例の要部の斜視図、図
2はその2台を向きを変えて配置した状態の横断平面
図、図3は図1のプレス機械に金型交換装置を取り付け
たときの横断平面図である。
DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an example of implementing the present invention will be described with reference to the drawings. 1 is a perspective view of an essential part of an example of a press machine according to the present invention, FIG. 2 is a cross-sectional plan view showing a state in which the two machines are arranged in different directions, and FIG. 3 is a mold exchanging device attached to the press machine of FIG. FIG.

【0011】図において、1はほぼ正三角形の頂点の3
箇所に配置したタイロッドで、上部に上側固定プレ−ト
2を、下部に下側固定プレ−ト3を、それぞれナット4
により固定し、それらテ−ブル2,3の間に位置させて
ラム5を摺動可能に取り付けてあり、ラム5はその下面
に取り付けた油圧シリンダ6により駆動されるようにな
っていて、以上により本発明プレス機械の一例を構成す
る。尚、図中、7はラム5の上面に配置させた金型を取
り付けるためのボルスタ−、71は金型を交換する際に便
利なように準備した予備のボルスタ−である。
In the figure, 1 is 3 of the vertices of a substantially equilateral triangle.
With the tie rods arranged at the locations, the upper fixing plate 2 is at the upper part, the lower fixing plate 3 is at the lower part, and the nuts 4 are respectively arranged.
The ram 5 is slidably mounted by being positioned between the tables 2 and 3, and the ram 5 is driven by a hydraulic cylinder 6 mounted on the lower surface of the ram 5. This constitutes an example of the press machine of the present invention. In the figure, 7 is a bolster for mounting a die placed on the upper surface of the ram 5, and 71 is a spare bolster prepared for the convenience of exchanging the die.

【0012】このプレス機械は、ラム5の上面にボルス
タ−7を介して金型(図示せず)を取り付け、油圧シリ
ンダ6を駆動してプレス加工するのであるが、タイロッ
ド1がほぼ正三角形の頂点の3箇所に配置してあるの
で、前述したように、タイロッド1の長さのバラツキに
起因する内部応力の発生が防止される。
In this press machine, a die (not shown) is attached to the upper surface of the ram 5 via a bolster 7, and the hydraulic cylinder 6 is driven to perform the press work. The tie rod 1 has a substantially equilateral triangle shape. Since the tie rods are arranged at three points, the internal stress caused by the variation in the length of the tie rod 1 can be prevented.

【0013】また、プレス加工中に偏荷重が加えられて
も、この荷重を3本すべてのタイロッド1が受けるの
で、加圧力による圧縮力以外の内部応力が発生すること
も無く、常に、動的に極めて安定した形で荷重を支持す
ることが可能である。
Further, even if an eccentric load is applied during the press working, all the three tie rods 1 receive this load, so that internal stress other than the compressive force due to the applied pressure does not occur, and it is always dynamic. It is possible to support the load in a very stable manner.

【0014】更に、このプレス機械は、平面形状がほぼ
正三角形状であるため、作業者が金型に接近しやすくて
作業性も良好であるし、また、図2に示すように、交互
に向きを変えて配列することにより、省スペ−スで多工
程加工が可能なトランスファ−プレス機を構成すること
が出来る。
Furthermore, since this press machine has a substantially equilateral triangular shape in a plan view, it is easy for an operator to approach the mold and the workability is good, and as shown in FIG. By arranging them in different directions, it is possible to construct a transfer press machine that can save space and perform multi-step processing.

【0015】一方、金型の交換に際しては、1本のタイ
ロッド1を中心にして金型を回転させることにより、そ
の作業を容易に行うことが出来るし、また、図3に示す
ように、ボウルスタ−7の回転最外径がタイロッドと干
渉しないので、次の加工用の金型を準備したボルスタ−
71を180度回転させるだけで、金型の交換を容易に行う
ことが出来る。
On the other hand, when the mold is replaced, the work can be easily performed by rotating the mold around one tie rod 1, and as shown in FIG. − The outermost diameter of rotation of 7 does not interfere with the tie rod, so a bolster with a die for the next machining
The mold can be easily replaced by simply rotating the 71 180 degrees.

【0016】[0016]

【発明の効果】本発明は上述のとおりであって、上側固
定テ−ブルと下側固定テ−ブルを結合しているタイロッ
ドの外周面を案内面としてラムが摺動し駆動されるタイ
プのプレス機械において、タイロッドをほぼ正三角形の
頂点の位置に3本配置するようにしたから、力のバラン
スが良好で、動的精度が高くなり、高精度のプレス加工
を行うことが出来るばかりでなく、加工中に偏荷重が掛
けられても、3本のタイロッドが常に安定してこれを支
持することが出来るし、その他、従来の4本のタイロッ
ドを必要としたプレス機械に比し、単に1本のタイロッ
ドが不要になって部品の単価が安くなるなるだけに留ま
らず、その取り付け用の穴加工は省略出来るし、また、
タイロッドに掛かる荷重の調整時間も短縮されるので、
総合的に大幅なコストダウンを実現できる。
As described above, the present invention is of the type in which the ram slides and is driven with the outer peripheral surface of the tie rod connecting the upper fixed table and the lower fixed table as the guide surface. In the press machine, three tie rods are arranged at the positions of the vertices of a nearly equilateral triangle, so the balance of forces is good, the dynamic accuracy is high, and not only high-precision press working can be performed. Even if an eccentric load is applied during processing, the three tie rods can always support it stably, and in addition to the conventional press machine that requires four tie rods, it is only 1 Not only does the tie rod of the book become unnecessary and the unit price of the parts becomes cheaper, the hole processing for its attachment can be omitted, and also
Since the time for adjusting the load applied to the tie rod is also shortened,
It is possible to realize a significant cost reduction overall.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明プレス機械の一例の要部の斜視図。FIG. 1 is a perspective view of a main part of an example of a press machine of the present invention.

【図2】図1の機械の2台を向きを変えて配置した状態
の横断平面図。
FIG. 2 is a cross-sectional plan view showing a state in which two of the machines shown in FIG. 1 are arranged with their directions turned.

【図3】図1の機械に金型交換装置を取り付けた状態の
横断平面図。
3 is a cross-sectional plan view showing a state in which a mold exchanging device is attached to the machine shown in FIG.

【図4】従来のプレス機械の一例の要部の斜視図。FIG. 4 is a perspective view of a main part of an example of a conventional press machine.

【図5】同じく柱とスライドギブの関係を示す横断平面
図。
FIG. 5 is a cross-sectional plan view showing the relationship between the pillar and the slide give.

【符号の説明】[Explanation of symbols]

1 タイロッド 2 上側固定テ−ブル 3 下側固定テ−ブル 4 ナット 5 ラム 6 油圧シリンダ 7,71 ボルスタ− 1 Tie rod 2 Upper fixed table 3 Lower fixed table 4 Nut 5 Ram 6 Hydraulic cylinder 7,71 Bolster

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 タイロッドに上側固定テ−ブルと下側固
定テ−ブルをナット等により固定すると共に、油圧シリ
ンダ等により駆動されるラムを摺動自在に取り付け、ラ
ムがタイロッドの外周面を案内面として摺動し駆動され
るタイプのプレス機械において、タイロッドが、正三角
形に近い三角形の各頂点の位置に配置されていることを
特徴とするプレス機械。
1. An upper fixed table and a lower fixed table are fixed to a tie rod with nuts and the like, and a ram driven by a hydraulic cylinder or the like is slidably mounted so that the ram guides the outer peripheral surface of the tie rod. In a press machine of a type that slides and is driven as a surface, a tie rod is arranged at each vertex of a triangle close to an equilateral triangle.
JP4276509A 1992-09-21 1992-09-21 Press machine Expired - Lifetime JPH07108479B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4276509A JPH07108479B2 (en) 1992-09-21 1992-09-21 Press machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4276509A JPH07108479B2 (en) 1992-09-21 1992-09-21 Press machine

Publications (2)

Publication Number Publication Date
JPH0699300A true JPH0699300A (en) 1994-04-12
JPH07108479B2 JPH07108479B2 (en) 1995-11-22

Family

ID=17570464

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4276509A Expired - Lifetime JPH07108479B2 (en) 1992-09-21 1992-09-21 Press machine

Country Status (1)

Country Link
JP (1) JPH07108479B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5857407A (en) * 1996-06-03 1999-01-12 Gross; John D. Oil filter crusher
DE102005014588A1 (en) * 2005-03-24 2006-09-28 Knöll, Herbert Workstation for mechanical work, has rack with three vertically running columns, and electrical shaft or hydraulic working press arranged at columns, where direction of motion of press is vertically oriented
CN112108601A (en) * 2020-09-08 2020-12-22 桂林理工大学 2000 ton three-beam three-column hydraulic press
CN113319231A (en) * 2020-08-18 2021-08-31 桂林理工大学 Three-beam three-column diagonal press

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5520799A (en) * 1978-07-31 1980-02-14 Dynamit Nobel Ag Improved manufacture of dimethylterephthalate

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5520799A (en) * 1978-07-31 1980-02-14 Dynamit Nobel Ag Improved manufacture of dimethylterephthalate

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5857407A (en) * 1996-06-03 1999-01-12 Gross; John D. Oil filter crusher
DE102005014588A1 (en) * 2005-03-24 2006-09-28 Knöll, Herbert Workstation for mechanical work, has rack with three vertically running columns, and electrical shaft or hydraulic working press arranged at columns, where direction of motion of press is vertically oriented
CN113319231A (en) * 2020-08-18 2021-08-31 桂林理工大学 Three-beam three-column diagonal press
CN112108601A (en) * 2020-09-08 2020-12-22 桂林理工大学 2000 ton three-beam three-column hydraulic press

Also Published As

Publication number Publication date
JPH07108479B2 (en) 1995-11-22

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