JPH04147800A - Press machine - Google Patents

Press machine

Info

Publication number
JPH04147800A
JPH04147800A JP27024790A JP27024790A JPH04147800A JP H04147800 A JPH04147800 A JP H04147800A JP 27024790 A JP27024790 A JP 27024790A JP 27024790 A JP27024790 A JP 27024790A JP H04147800 A JPH04147800 A JP H04147800A
Authority
JP
Japan
Prior art keywords
column
crown
bed
frame
strutting
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.)
Pending
Application number
JP27024790A
Other languages
Japanese (ja)
Inventor
Takashi Yagi
隆 八木
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.)
Aida Engineering Ltd
Original Assignee
Aida Engineering 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 Aida Engineering Ltd filed Critical Aida Engineering Ltd
Priority to JP27024790A priority Critical patent/JPH04147800A/en
Publication of JPH04147800A publication Critical patent/JPH04147800A/en
Pending 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
    • B30B15/042Prestressed frames

Landscapes

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

Abstract

PURPOSE:To facilitate selective change over of longitudinal rigidity by mounting strutting members in parallel with a column and tie rods between a bed or slide and a crown and forcibly expanding or contracting the strutting members by external force. CONSTITUTION:The strutting members 20 which are fitted to the respective tie rods 14 are mounted between the crown 11 and the bed 13 in the respective columns 12. Piston bodies 41 and cylinder chambers 43 are provided via gaskets 42 into holes 12H provided in the lower part of the columns 12. The piston bodies 41 rise to compress (substantially expand) the strutting members 20 when an oil pressure is applied into the cylinder chambers 43. Namely, the strutting members 20 are interposed between the crown 11 and the bed 13 to increase the apparent sectional area of the columns 12, by which the longitudinal rigidity of a frame 10 is increased. The optimum longitudinal rigidity is obtd. if the oil pressure value is changed.

Description

【発明の詳細な説明】 [産業上の利用分野コ 本発明は、ベッド、コラム、クラウンをタイロッドで締
付結合したフレームを有するプレス機械に関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a press machine having a frame in which a bed, a column, and a crown are fastened together by tie rods.

[従来の技術] 第4図にタイロッド締付結合方式のフレームを有するプ
レス機械を示す。
[Prior Art] Fig. 4 shows a press machine having a tie rod fastening type frame.

同図において、10はフレームで、クラウン11と四隅
に配設された4本のコラム12とベッド13とを4本の
タイロッド14で締付けて結合した構成である。
In the figure, a frame 10 has a structure in which a crown 11, four columns 12 disposed at the four corners, and a bed 13 are connected by tightening with four tie rods 14.

なお、1はスライド、2.2はプランジャ、3はボルス
タで、これらとフレーム10等からプレス機械100か
形成されている。
Note that 1 is a slide, 2.2 is a plunger, and 3 is a bolster, and a press machine 100 is formed from these and a frame 10 and the like.

ここに、タイロッド14を初期締付力POで締付けると
、第5図(口開き荷重P1を一定とした場合)に示す如
く、タイロッド14は△Toたけ伸びコラム12は△C
1だけ縮む、この場合におけるタイロッド14のバネ定
数(荷重−伸び線図)。
When the tie rod 14 is tightened with the initial tightening force PO, the tie rod 14 will elongate △To and the column 12 will elongate △C, as shown in FIG.
The spring constant (load-elongation diagram) of the tie rod 14 in this case when it contracts by 1.

はKtで、コラム12のバネ定数(荷重−伸び線図)は
KCである。したがって、フレーム10全体く系)とし
てのバネ定数(荷重−伸び線図)はKとなる。よって、
第4図に示す如くPなる作業荷重が加わると、フレーム
10は第5図に示す△Fまたけ伸びることになる。
is Kt, and the spring constant (load-elongation diagram) of column 12 is KC. Therefore, the spring constant (load-elongation diagram) of the entire frame 10 is K. Therefore,
When a working load of P is applied as shown in FIG. 4, the frame 10 will extend across ΔF as shown in FIG.

なお、第5図中、Plは口開き荷重つまりコラム12の
締付力が零(タイロッド14とコラム12との合成の圧
縮歪みが零)となるときの作業荷重であり、プレス機械
100としては、この合成圧縮歪みか残っている範囲内
でプレス作業される。
In FIG. 5, Pl is the working load when the opening load, that is, the tightening force of the column 12 is zero (the combined compressive strain of the tie rod 14 and the column 12 is zero), and as the press machine 100, , press work is performed within the remaining range of this resultant compressive strain.

このように、かかるプレス機械lOOのフレーム10全
体のバネ定数K(In性)は、タイロッド14の断面積
およびフレームの断面積の相違によって定まる。
In this way, the spring constant K (In nature) of the entire frame 10 of the press machine IOO is determined by the difference between the cross-sectional area of the tie rod 14 and the cross-sectional area of the frame.

そして、縦剛性(K)をどのような値に決定するかは、
プレス作業態様によって適宜に選択される。−船釣には
、打抜き作業用プレスではブレークスルーを小さくする
ために縦剛性を大きく、コイニングや曲げ作業用プレス
では加工精度向上のために加工時間を長くとる必要があ
るから#1則性を小さくする。
And what value should be determined for the longitudinal stiffness (K)?
It is selected as appropriate depending on the press operation mode. - For boat fishing, presses for punching work require large vertical rigidity to reduce breakthrough, and presses for coining and bending work require longer processing time to improve processing accuracy, so the #1 rule is used. Make it smaller.

すなわち、打抜き作業用プレスでは、第6図(A)に示
すように、縦削性が大きいから負荷曲線上の0部に示す
如くフレーム10か変形する時間(スライド1が停止し
ている時間)か短く、フレーム10に貯えられた歪みエ
ネルギーか少ない。
In other words, as shown in FIG. 6(A), in a press for punching work, since the vertical cutting property is large, the time for the frame 10 to deform as shown at part 0 on the load curve (the time during which the slide 1 is stopped) is The shorter the time, the less strain energy is stored in the frame 10.

したがって、打抜き後の歪みエネルギーが運動エネルギ
ーとして放出されたときの逆荷重でスライド1が下降す
る量およびスライド1の加速度を小さくすることができ
るので、点線で示す無負荷曲線より下方に下る0部のブ
レークスルーを小さくすることができ、加工時間T1も
短い、よって、下型へのいわゆる突込み量が小さく、ま
た、無負荷曲線へ戻るまでの振動を短時間に吸収できる
Therefore, it is possible to reduce the amount by which the slide 1 descends due to the reverse load when the strain energy after punching is released as kinetic energy, and the acceleration of the slide 1, so that the 0 part that falls below the no-load curve shown by the dotted line can be reduced. The breakthrough can be made small, and the machining time T1 is short.Therefore, the so-called plunge amount into the lower die is small, and the vibrations until returning to the no-load curve can be absorbed in a short time.

一方、コイニング等の作業用プレスでは、第6図(B)
に示すように、縦剛性を小さくし、実線で示す負荷曲線
の■部から明らかの通り、加工時間T2を長くかつフレ
ームlOを変形させつつ加工する。そして、■部に示す
スライド下死点でいわゆるストッパーブロックにより位
置規制し製品の最終精度を正確に達成する。
On the other hand, for working presses such as coining, Fig. 6 (B)
As shown in FIG. 2, the longitudinal stiffness is reduced, and as is clear from the solid line section 2 of the load curve, processing is performed while the processing time T2 is lengthened and the frame IO is deformed. Then, the position is regulated by a so-called stopper block at the bottom dead center of the slide shown in part (■) to accurately achieve the final accuracy of the product.

かくして、従来はプレス加工の態様つまり使用目的に適
合させた専用ブレスを用いて、当該プレス加工を高能率
に行なっていた。
Thus, in the past, press working was performed with high efficiency using a special press adapted to the mode of press working, that is, the purpose of use.

[発明か解決しようとする課uコ ところで、−層の生産能率の向上はもとより各種各様の
製品を生産するという多様化の現今では、製品(加工態
様)ごとに専用プレスを設置する従来の考え方によると
、スペース的、コスト的にもその要請を満たすことがで
きなくなっている。
[Issues to be solved by invention] Nowadays, not only is the production efficiency of -layers improved, but also the production of various products is becoming more diversified. According to the idea, it is no longer possible to meet these demands in terms of space and cost.

だからと言って、第6図(A>に示す特性を有する縦剛
性の大きなプレス機械を用いて曲げ作業等を行なえば、
曲げ加工が短時間で終了するので金型の形状転写が悪化
し、加工精度が悪くなる。
However, if you perform bending work using a press machine with high vertical rigidity that has the characteristics shown in Figure 6 (A>),
Since the bending process is completed in a short time, the shape transfer of the mold becomes worse, resulting in poor processing accuracy.

また、上記ストッパーブロックを設けた場合には一スラ
イド1の跳返りが大きいのみならすフレーム10の縦剛
性の方か大きいので、ストッパーブロック等を破損して
しまう問題も生じる。
Further, when the above-mentioned stopper block is provided, not only the rebound of one slide 1 is large, but also the longitudinal rigidity of the frame 10 is greater, so there is a problem that the stopper block etc. may be damaged.

一方、第6図(B)に示すIn則性の小さなプレス機械
を用いて打抜き作業を行なえば、打抜き加工中にフレー
ム10に蓄積される歪みエネルギーが過大となるので、
打抜き加工後のスライド1の加速度、ブレークスルーか
大きくなり、長時間振動と金型への突込み量も過大とな
る不利益か生じる。したかって、専用プレス機械を他の
加工目的に供することは実用性がなく現実的でない。
On the other hand, if the punching work is performed using a press machine with a small In law shown in FIG. 6(B), the strain energy accumulated in the frame 10 during the punching process will be excessive.
The acceleration and breakthrough of the slide 1 after punching increases, resulting in disadvantages such as long-term vibration and an excessive amount of thrust into the mold. Therefore, it is impractical and impractical to use a dedicated press machine for other processing purposes.

これに対して、加工態様によって、各タイロッド14を
緊締弛緩して縦剛性を調整することか考えられるか、こ
のタイロッド14の締付作業は複雑で熟練も必要とする
から、加工態様が変るごとにその都度作業することは実
務上不可能に近い。
On the other hand, depending on the processing mode, it may be possible to adjust the longitudinal rigidity by tightening or loosening each tie rod 14. Since tightening the tie rods 14 is complicated and requires skill, it may be necessary to adjust the longitudinal rigidity depending on the processing mode. It is almost impossible in practice to do the work each time.

本発明の目的は、フレームの縦剛性を容易かつ迅速に切
替調整できるプレス機械を提供することにある。
An object of the present invention is to provide a press machine that can easily and quickly switch and adjust the longitudinal rigidity of a frame.

[課題を解決するための手段] 本発明は、タイロッドの締付力を一定としたままコラム
の見掛断面積を外部操作により切替えてプレス機械の縦
剛性を切替調整できるように構成したものである。
[Means for Solving the Problems] The present invention is configured so that the vertical rigidity of the press machine can be switched and adjusted by changing the apparent cross-sectional area of the column by external operation while keeping the tightening force of the tie rod constant. be.

すなわち、本発明は、ベッド、コラムおよびクラウンを
四隅に貫通配設されたタイロッドを締付けて結合したフ
レームを有するプレス機械において、前記ベッドまたは
スライドとクラウンとめ間に前記コラムおよびタイロッ
ドと並行に装着された突張部材と、この突張部材を強制
的に伸縮させるための外力を付与する外力付与手段とを
設け、前記フレームの縦剛性を選択的に切替えることが
できるように構成したことを特徴とする。
That is, the present invention provides a press machine having a frame in which a bed, a column, and a crown are connected by tightening tie rods that are disposed through the four corners of the press machine. and an external force applying means for applying an external force for forcibly expanding and contracting the tension member, so that the longitudinal rigidity of the frame can be selectively switched. do.

[作 用] 本発明では、タイロッドの初期締付力を、フレーム全体
としての縦剛性が例えば曲げ加工等(打抜き加工)に最
適な最大(最小)となるように、加えておく。
[Function] In the present invention, the initial tightening force of the tie rod is applied so that the longitudinal rigidity of the frame as a whole becomes the maximum (minimum) optimum for bending, etc. (punching), for example.

ここで、打抜き加工(曲げ加工)を行なう場合には、外
力付与手段によって突張部材を伸張(縮小)させ、タイ
ロッドとコラムとの合成圧縮歪みを変化させる。
Here, when punching (bending) is performed, the tension member is expanded (reduced) by the external force applying means to change the combined compressive strain of the tie rod and column.

よって、フレーム全体の縦剛性を大きく(小さく)切替
調整できる。
Therefore, the longitudinal rigidity of the entire frame can be switched and adjusted to be larger (smaller).

[実施例] 以下、本発明の一実施例を図面を参照して説明する。[Example] Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

第1図は本実施例の要部を示す断面図である。FIG. 1 is a sectional view showing the main parts of this embodiment.

本プレス機械としては、前出第4図に示す従来例と同一
の構造とされ、かつ突張部材20と外力付与手段(30
,40)とが設けられている。
This press machine has the same structure as the conventional example shown in FIG.
, 40) are provided.

突張部材20は、中空円筒部材からなり、各コラム12
内において四隅に配設された各タイ口1゜ド14に被嵌
させてクラウン11とベッド13との間に装着されてい
る。つまり、コラム12およびタイロッド14に並行に
取付けられている。
The tension member 20 is made of a hollow cylindrical member, and each column 12
It is fitted between the crown 11 and the bed 13 by fitting into each tie opening 1° 14 provided at the four corners of the crown 11 and the bed 13. That is, it is attached to the column 12 and tie rod 14 in parallel.

なお、本実施例では、第1図に示すY方向の外力を加え
るものとしているので、突張部材20はタイロッド14
に初期締付力POを加えた状態で、かつ外力を加えない
状態で、クラウン11とベッド13との間に抗力を加え
ることのない長さとされている。
In this embodiment, since an external force is applied in the Y direction shown in FIG.
The length is such that no resistance is applied between the crown 11 and the bed 13 when an initial tightening force PO is applied to the crown 11 and when no external force is applied.

さて、外力付与手段は、突張部材20に圧縮力を加える
つまり突張部材20を縮小させる(実質的にはクラウン
11とベッド13との間に差込むつまりコラム12の見
掛断面積を増大するように伸張させる)方向の力を加え
る外力付与機構40とこの機構40に油圧を加える油圧
供給手段30とから形成されている。
Now, the external force applying means applies a compressive force to the tension member 20, that is, it reduces the tension member 20 (substantially, it is inserted between the crown 11 and the bed 13, that is, it increases the apparent cross-sectional area of the column 12. It is formed from an external force applying mechanism 40 that applies a force in the direction (to extend the body) and a hydraulic pressure supply means 30 that applies hydraulic pressure to this mechanism 40.

外力付与機構40は、コラム12の下部に設けられた穴
12Hにバッキング42を介して軸方向に変位可能に装
着されたピストン体41と、シリンダ室43と、このシ
リンダ室43と油圧供給手段30とを連ぶ油路44とか
ら形成されている。
The external force applying mechanism 40 includes a piston body 41 which is displaceably displaceable in the axial direction via a backing 42 in a hole 12H provided in the lower part of the column 12, a cylinder chamber 43, and a hydraulic pressure supply means 30 between the cylinder chamber 43 and the piston body 41. It is formed from an oil passage 44 that connects with.

したかって、シリンダ室43内に所定油圧を付与すれば
、突張部材20をクラウン11とベッド13との間に介
装しコラム12の見掛断面積を増大できるので、結果と
してフレーム10の縦剛性を大きく調整できる。
Therefore, by applying a predetermined hydraulic pressure in the cylinder chamber 43, the tension member 20 can be interposed between the crown 11 and the bed 13 and the apparent cross-sectional area of the column 12 can be increased. The rigidity can be adjusted greatly.

一方、油圧供給手段30は、油圧ボンダ31と開閉弁3
5と油タンク34等からなり、油圧ポンプ31を駆動す
ることによって、シリンダ室44内に油圧を供給し、開
閉弁35を開放することによりシリンダ室44内から油
圧を除去することができる。
On the other hand, the hydraulic pressure supply means 30 includes a hydraulic bonder 31 and an on-off valve 3.
By driving the hydraulic pump 31, hydraulic pressure can be supplied into the cylinder chamber 44, and by opening the on-off valve 35, the hydraulic pressure can be removed from the cylinder chamber 44.

この油圧ポンプ31は、空気源37.レギュレータ38
.ソレノイドバルブ39からなる空気供給装置によって
駆動される空気圧作動型であり、圧力スイッチ36によ
って停止される。なお、32.33は逆止弁である。
This hydraulic pump 31 is connected to an air source 37. regulator 38
.. It is a pneumatically operated type driven by an air supply device consisting of a solenoid valve 39 and is stopped by a pressure switch 36. Note that 32 and 33 are check valves.

すなわち、シリンダ室44内の油圧が所定E力となると
、圧力スイッチ36か動作してソレノイドパルプ39を
0FFL油圧ポンプ31を停止させる。一方、シリンダ
室44内から油圧を除去する場合には、油圧ポンプ31
を停止させたまま開閉弁35のソレノイドを図示しない
制御盤で励磁することにより開放し油タンク34に排出
するものと形成されている。
That is, when the oil pressure in the cylinder chamber 44 reaches a predetermined E force, the pressure switch 36 operates to turn the solenoid pulp 39 to 0FFL and stop the hydraulic pump 31. On the other hand, when removing hydraulic pressure from inside the cylinder chamber 44, the hydraulic pump 31
The solenoid of the on-off valve 35 is energized by a control panel (not shown) while the oil is stopped, so that the oil is opened and discharged into the oil tank 34.

次に、作用を説明する。Next, the effect will be explained.

今、油圧供給手段30の開放弁35を開放しシリンダ室
44内を空にした場合を考える。
Now, consider a case where the release valve 35 of the hydraulic pressure supply means 30 is opened and the cylinder chamber 44 is emptied.

この場合、突張部材20はクラウン11とベッド13と
の間にあって何等の抗力も生じない。
In this case, the tension member 20 is located between the crown 11 and the bed 13 and does not generate any drag.

したかって、この状態において初期締付力POでタイロ
ッド14を締付けた場合、初期締付力POでのタイロッ
ド14の伸び八TO,コラム12の縮み△C1,コラム
12のバネ定数KC1,フレーム10のバネ定数(荷重
−伸び線図)Klは、それぞれ第2図(前出第5図と同
様に口開き荷重P1を一定とした場合を示す、)に示す
如くなる。
Therefore, when the tie rod 14 is tightened with the initial tightening force PO in this state, the expansion 8 TO of the tie rod 14, the contraction ΔC1 of the column 12, the spring constant KC1 of the column 12, and the spring constant KC1 of the frame 10 at the initial tightening force PO. The spring constant (load-elongation diagram) Kl is as shown in FIG. 2 (which shows the case where the mouth opening load P1 is constant as in FIG. 5).

かかる縦剛性において作業荷重Pを加えた場合における
フレーム10の伸びはΔF1である。
With such longitudinal rigidity, the elongation of the frame 10 when a working load P is applied is ΔF1.

つまり、この実施例では、突張部材20が無効である場
合に曲げ加工等に最適な小さな縦剛性を持つものとされ
ている。
That is, in this embodiment, when the tension member 20 is ineffective, it has a small longitudinal rigidity that is optimal for bending and the like.

ここに、油圧供給手Pi30の開閉弁35を閉塞し油ポ
ンプ31を運転してシリンダ室44内に圧力スイッチ3
6か作動する所定圧力まで油を加える。すると、ピスト
ン体41が上昇して突張部材20をHa(実質的には伸
張)する、つまり、突張部材20をクラウン11とベッ
ド13との間に介装してコラム12の見掛断面積を増大
する。
Here, the on-off valve 35 of the hydraulic pressure supply hand Pi 30 is closed, the oil pump 31 is operated, and the pressure switch 3 is installed in the cylinder chamber 44.
6. Add oil to the specified pressure for operation. Then, the piston body 41 rises and extends the tension member 20 Ha (substantially). Increase area.

したがって、口開き荷重P1を一定として同一の初期締
付力POを加えた場合を考えると、作業荷重Pを加えた
場合のフレーム10の伸びはΔF2(ΔF1より小さい
)、コラム12の縮み△C2(△C1より小さい)く、
コラム12と突張部材20との合成バネ定数KC2お2
よびフレーム10全体のバネ定数に2は第2図で点線で
示すようになり、フレーム10の縦剛性を大きくできる
Therefore, considering the case where the opening load P1 is constant and the same initial tightening force PO is applied, the elongation of the frame 10 when the working load P is applied is ΔF2 (less than ΔF1), and the contraction of the column 12 is ΔC2 (less than △C1)
Combined spring constant KC2 of column 12 and tension member 20
The spring constant of the entire frame 10 is 2 as shown by the dotted line in FIG. 2, and the longitudinal rigidity of the frame 10 can be increased.

したがって、同じプレス機械100で打抜き作業等を円
滑に行なえる。
Therefore, punching work etc. can be smoothly performed using the same press machine 100.

さらに詳しく、突張部材20の有効、無効によって突張
部材20とコラム12との荷重分担を変えた場合におけ
るバネ定数の変化を第3図を用いて説明する。なお、初
期締付力POは上記場合と同様に同一としたものとする
In more detail, the change in the spring constant when the load sharing between the tension member 20 and the column 12 is changed depending on whether the tension member 20 is enabled or disabled will be explained using FIG. Note that the initial tightening force PO is assumed to be the same as in the above case.

まず、突張部材20が無効すなわちコラム12の荷重分
担が100%である場合における口開き荷重がPlのと
き、コラム12のバネ定数KCIは第3図に実線で示す
直線a−dとなり、フレーム10全体のバネ定数に1は
直線e−hであり、縦削性か一番小さい。
First, when the opening load is Pl when the tension member 20 is ineffective, that is, when the load sharing of the column 12 is 100%, the spring constant KCI of the column 12 becomes a straight line a-d shown as a solid line in FIG. The spring constant of 10 as a whole is a straight line e-h, and the vertical machinability is the smallest.

なお、△TOおよびΔC1は初期締付力POを加えた場
合におけるタイロッド14の伸びおよびコラム12単体
としての縮みである。
Note that ΔTO and ΔC1 are the elongation of the tie rod 14 and the contraction of the column 12 as a single unit when the initial tightening force PO is applied.

ここに、突張部材20か有効で突張部材20とコラム1
2との荷重分担が50%づつ等分(いわゆる二重コラム
)となるように外力付与手段(30,40)を動作させ
ると、口開き荷重はP3となるか、コラム12と突張部
材20との合成バネ定数KC3は第3図に点線で示す直
@C−dで、フレーム10全体(系)のバネ定数に3は
直W&efとなる。すなわち、縦剛性を打抜き作業に好
適な大きなものとすることができる。
Here, the tension member 20 is active, and the tension member 20 and the column 1
When the external force applying means (30, 40) is operated so that the load sharing between the column 12 and the tension member 20 is equally divided by 50% (so-called double column), the opening load becomes P3, or the column 12 and the tension member 20 The composite spring constant KC3 with KC3 is shown by the dotted line in FIG. 3, and 3 is the spring constant of the entire frame 10 (system). That is, the longitudinal rigidity can be made large enough to be suitable for punching work.

因みに、突張部材20が有効で、コラム12の荷重分担
か51〜99%の間となるようにシリンダ室43内の油
圧を適宜に設定すれば、この場合における口開き荷重P
2は第3図に示すように口開き荷重P1とP3との間と
なり、コラム12と突張部材20との合成バネ定数KC
2は第3図に2点鎖線と点線で示す折線b−i−dとな
り、系のバネ定数に2は点線と2点鎖線とで示す折線e
−j−gとなる。
Incidentally, if the tension member 20 is effective and the hydraulic pressure in the cylinder chamber 43 is appropriately set so that the load is shared by the column 12 between 51 and 99%, the opening load P in this case can be reduced.
2 is between the mouth opening loads P1 and P3 as shown in FIG. 3, and the composite spring constant KC of the column 12 and the tension member 20 is
2 is a broken line b-i-d shown by a two-dot chain line and a dotted line in FIG.
−j−g.

つまり、系のバネ定数に2でみると、作業荷重Pの増大
に伴い当初は突張部材20の分担が50%と同じ直線e
−jとなり、点jを経過すると直線e−hに平行な直線
j−gとなる。
In other words, if we consider the spring constant of the system as 2, as the working load P increases, initially the tension member 20 will share 50% of the load, which is the same straight line e.
-j, and after passing point j, it becomes a straight line j-g parallel to straight line e-h.

しかして、この実施例によれば、ベッド13とクラウン
11との間にコラム12と平行に突張部材20を装着し
、かつこの突張部材20を強制的に伸縮させる外力付与
手段30.40を設け、フレーム10の縦削性つまり系
のバネ定数Kを選択的に切替えることができる構成とさ
れているので、突張部材20を無効とする状態で曲げ加
工等に好適な小さな縦剛性とし、打抜き加工においては
外力付与手段30.40を動作させて縦剛性を大きく切
替えられる。よって、−台のブレスm#l1100で打
抜き加工や曲げ加工等を切替えて行なえる適用性の広い
ものである。
According to this embodiment, the tension member 20 is mounted between the bed 13 and the crown 11 in parallel to the column 12, and the external force applying means 30.40 for forcibly expands and contracts the tension member 20. Since the structure is such that the longitudinal machinability of the frame 10, that is, the spring constant K of the system can be selectively switched, it is possible to achieve a small longitudinal rigidity suitable for bending, etc. with the tension member 20 disabled. In the punching process, the longitudinal rigidity can be changed significantly by operating the external force applying means 30, 40. Therefore, it has a wide range of applicability as punching, bending, etc. can be performed by switching with the press m#1100.

また、突張部材20は、中空円筒部材から形成されコラ
ム12内でタイロッド14に被嵌させた構成であるから
、コラム12に確実に並行配設でき低コストで具現化で
きる。また、突張部材20の無効時に外乱を引起すこと
なく、外力付与手段30.40によって迅速に有効化で
きる。よって、1f[ll性の切替を迅速に行なえる。
Further, since the tension member 20 is formed from a hollow cylindrical member and is fitted onto the tie rod 14 within the column 12, it can be reliably arranged parallel to the column 12 and can be implemented at low cost. Further, when the tension member 20 is disabled, it can be quickly enabled by the external force applying means 30, 40 without causing any disturbance. Therefore, switching between 1f[ll and 1f characteristics can be quickly performed.

さらに、外力付与手段はコラム12およびベッド13に
組込まれた外力付与機構40(41,44等)と油圧供
給手段30とから構成されているので、シリンダ室44
内に供給する油圧値を適宜に設定することにより当該プ
レス加工にfinな縦剛性を得ることかできる。
Furthermore, since the external force applying means is composed of an external force applying mechanism 40 (41, 44, etc.) incorporated in the column 12 and the bed 13, and the hydraulic pressure supply means 30, the cylinder chamber 44
By appropriately setting the hydraulic pressure supplied to the inside of the press, fine longitudinal rigidity can be obtained in the press process.

なお、以上の実施例では、油圧供給手段30は圧力スイ
ッチ36によって供給油圧をデジタル的に決定するもの
と構成したが、圧力検出器等を設は供給油圧をアナログ
的に調整できるように構成して実施することかできる。
In the above embodiment, the hydraulic pressure supply means 30 is configured to digitally determine the supplied hydraulic pressure using the pressure switch 36, but it is also possible to adjust the supplied hydraulic pressure in an analog manner by installing a pressure detector or the like. It can be implemented by

また、突張部材20と外力付与手段30.40とは、突
張部材20に圧縮力を加える方向に働くものと構成した
が突張部材20を伸ばす方向に働くよう構成しても実施
できる。
Further, although the tensioning member 20 and the external force applying means 30, 40 are configured to act in the direction of applying compressive force to the tensioning member 20, they may also be configured to act in the direction of stretching the tensioning member 20.

さらに、突張部材20はベッド13とクラウン11との
間に介装した構成としたか、スライドとクラウン11と
の間に断面積を変化させるように介装した構成としても
実施できる。
Further, the tension member 20 may be interposed between the bed 13 and the crown 11, or may be interposed between the slide and the crown 11 so as to change the cross-sectional area.

[発明の効果] 以上の通り、本発明によれば、ベッドまたはスライドと
クラウンとの間にコラム等と並行に突張部材を装着しか
つこの突張部材を伸縮させる外力付与手段を設はフレー
ムのIl[性を選択的に切替えることができる構成とさ
れているので、タイロッドの締付力を都度に変更するな
どの煩雑作業等を要せずプレスt!A株の[ll性を迅
速かつ容易に切替調整できる。もって、−台のプレス機
械で大きな縦剛性を必要とする打抜き加工から小さな[
ll性か好ましい曲は加工まで実施できる。
[Effects of the Invention] As described above, according to the present invention, a tensioning member is mounted between a bed or a slide and a crown in parallel with a column, etc., and an external force applying means for expanding and contracting this tensioning member is provided in a frame. Since it is configured to be able to selectively switch the Il[ property of the press t! It is possible to quickly and easily switch and adjust the [II character] of A strain. This makes it possible to change from punching processes that require large vertical rigidity using a press machine to small [
If the song is unique or desirable, it can even be processed.

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

第1図は本発明の一実施例の要部を示す断面図、第2図
は同じく口開き荷重を一定とした場合の縦剛性の切替を
説明するための図、第3図は同じくコラムと突張部材と
の荷重分担を変えた場合の縦剛性の切替えを説明するた
めの図、第4図は従来のプレス機械を示す正面図、第5
図は従来のプレス機械における縮開性を説明するための
図および第6図は縦剛性とプレス加工態様との関係を説
明するための図である。 1・・・スライド、 2・・・プランジャ、 3・・・ボルスタ、 10・・・フレーム、 11・・・クラウン、 12・・・コラム、 13・・・ベッド、 14・・・タイロッド、 20・・・突張部材、 30・・・油圧供給手段(外力付与手段)、31・・・
油ポンプ、 35・・・開閉弁、 40・・・外力付与ai!(外力付与手段)、41・・
・ピストン体、 43・・・シリンダ室、 44・・・油路、 100・・・プレス機械。 第 図
Fig. 1 is a cross-sectional view showing the main part of an embodiment of the present invention, Fig. 2 is a view for explaining switching of the longitudinal stiffness when the mouth opening load is constant, and Fig. 3 is a cross-sectional view showing the main part of an embodiment of the present invention. Figure 4 is a front view showing a conventional press machine;
The figure is a diagram for explaining the collapsibility of a conventional press machine, and FIG. 6 is a diagram for explaining the relationship between longitudinal rigidity and press working mode. DESCRIPTION OF SYMBOLS 1... Slide, 2... Plunger, 3... Bolster, 10... Frame, 11... Crown, 12... Column, 13... Bed, 14... Tie rod, 20... ...Tension member, 30...Hydraulic pressure supply means (external force applying means), 31...
Oil pump, 35... Opening/closing valve, 40... External force application ai! (external force applying means), 41...
- Piston body, 43... Cylinder chamber, 44... Oil path, 100... Press machine. Diagram

Claims (1)

【特許請求の範囲】[Claims] (1)ベッド、コラムおよびクラウンを四隅に貫通配設
されたタイロッドを締付けて結合したフレームを有する
プレス機械において、 前記ベッドまたはスライドとクラウンとの間に前記コラ
ムおよびタイロッドと並行に装着された突張部材と、 この突張部材を強制的に伸縮させるための外力を付与す
る外力付与手段とを設け、前記フレームの縦剛性を選択
的に切替えることができるように構成したことを特徴と
するプレス機械。
(1) In a press machine having a frame in which a bed, a column, and a crown are connected by tightening tie rods that are provided through the four corners, there is provided a frame that is installed between the bed or slide and the crown in parallel with the column and tie rods. A press comprising a tension member and an external force applying means for applying an external force to forcibly expand and contract the tension member, and configured to selectively switch the longitudinal rigidity of the frame. machine.
JP27024790A 1990-10-08 1990-10-08 Press machine Pending JPH04147800A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP27024790A JPH04147800A (en) 1990-10-08 1990-10-08 Press machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP27024790A JPH04147800A (en) 1990-10-08 1990-10-08 Press machine

Publications (1)

Publication Number Publication Date
JPH04147800A true JPH04147800A (en) 1992-05-21

Family

ID=17483598

Family Applications (1)

Application Number Title Priority Date Filing Date
JP27024790A Pending JPH04147800A (en) 1990-10-08 1990-10-08 Press machine

Country Status (1)

Country Link
JP (1) JPH04147800A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019001285A1 (en) * 2019-02-23 2020-08-27 AlDA EUROPE GmbH System of a frame for presses and press frame
JP2020163431A (en) * 2019-03-29 2020-10-08 株式会社アマダ Die-pressing device and die-pressing method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6438599A (en) * 1987-04-20 1989-02-08 Rii Roisutaa Jiyon Recoil device for firearm, breech bolt of which is reciprocated

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6438599A (en) * 1987-04-20 1989-02-08 Rii Roisutaa Jiyon Recoil device for firearm, breech bolt of which is reciprocated

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019001285A1 (en) * 2019-02-23 2020-08-27 AlDA EUROPE GmbH System of a frame for presses and press frame
JP2020163431A (en) * 2019-03-29 2020-10-08 株式会社アマダ Die-pressing device and die-pressing method

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