EP0648596B1 - Presse, insbesondere schnellaufende Schneidpresse - Google Patents
Presse, insbesondere schnellaufende Schneidpresse Download PDFInfo
- Publication number
- EP0648596B1 EP0648596B1 EP94115982A EP94115982A EP0648596B1 EP 0648596 B1 EP0648596 B1 EP 0648596B1 EP 94115982 A EP94115982 A EP 94115982A EP 94115982 A EP94115982 A EP 94115982A EP 0648596 B1 EP0648596 B1 EP 0648596B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- press
- lever
- mass
- masses
- frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000005520 cutting process Methods 0.000 title claims description 8
- 230000008859 change Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 101100390736 Danio rerio fign gene Proteins 0.000 description 1
- 101100390738 Mus musculus Fign gene Proteins 0.000 description 1
- 229910003296 Ni-Mo Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/0064—Counterbalancing means for movable press elements
Definitions
- the invention relates to a press, in particular a high-speed cutting press according to the preamble of claim 1.
- Balance weights serve as masses to balance rotating mass forces during the operation of the press, to compensate for oscillating and similar mass forces.
- Vibrations occur as the stroke rate increases and as a result of cutting forces to a not insignificant share of the press and tool load represent.
- the economical production of stamped parts on cutting presses and so-called High-speed presses are influenced by the number of strokes and the service life or quantity of the tool.
- the increase in the number of strokes causes an overall increase of the mass forces.
- mass compensation measures are to be guaranteed the stability of the press is required, but without the inner This could reduce press loads.
- the immersion depth increases with a higher number of strokes Tool wear increases.
- the plunger drive system is at higher stroke rates due to friction losses and wear. Hence an increase in This economical production only made sense if the efficiency of the Press and tool life are at least kept.
- US-A-4,791,830 describes a press in which two different press drives are used Crowds are moved.
- a first mass takes over the function of Ram of the press, the second mass is used to balance the mass.
- the masses are among themselves operatively connected via a crankshaft of the common drive. Both masses are arranged below the press drive and guided linearly in the press frame.
- the second Mass for mass balance is not due to the changing vibration conditions customizable.
- the object of the invention is to increase the number of strokes and under the action the cutting forces occurring and increasing in presses of the generic type Vibrations and thus the load on the press and tool to little hold or decrease.
- the balance of the linearly moving masses should be included a synchronously adjustable counterweight take place, plunger and counterweight closely are to be arranged one above the other.
- the lever system between plunger and counter mass has a linear elastic behavior. There are For each crank angle, there are favorable transmission angles between the two masses. This type of coupling of the masses enables the mass inertia of the counter mass make full use of the cutting process.
- the frame of the press is largely used by mass forces kept clear.
- the paired coupling of bearing points of the compensation system for ram and counter mass leads to a short-circuit of the bearing reactions small ways.
- Other components can be used. For example it is possible to replace plain bearings with rolling bearings.
- the product of stroke times mass can be at least approximately the same for both masses by choosing the leverage ratio be.
- the spring system can be used equally for both masses.
- Another advantage is that with the adjustability of the spring constant the influences of a changed number of strokes and those of the stroke change are compensated.
- the principle which works across the entire stroke rate range, relieves the drive of inertial forces.
- the cutting energy is essentially the kinetic energy of the ram and counterweights taken.
- FIG. 1 The basic principle for adjusting the spring constants for use in high-speed presses according to FIG. 1 shows a linear spring 1, for example a torsion bar spring made from tempered steel or from a Cr-Ni-Mo alloy steel, which is press-fixed in the fixed point 2 and in a press-bearing-side pivot bearing 3 is stored.
- a handlebar lever 4 is rigidly connected to the torsion bar spring 1 and can be acted upon by a tab 6 at an articulation point 5.
- the flap 6 is articulated at the other end in a pivot point 7 by a lever 8.
- this is to be regarded as a pivot point in the area close to the spring.
- the lever 8 is mounted at the other end in its region close to the tappet in a pivot point 9.
- the lever 8 is also mounted in a bearing 11 which can be moved manually or by a motor in the press frame 10 in the direction of the extent of the lever 8.
- the bearing 11 is movable up to the area near the spring, articulation point 7, so that the lever length L2 of the lever 8 becomes zero and there are no deflection movements of the torsion bar spring 1 despite the movement of the articulation point 9 by the movement of the plunger 12.
- Such a lever system enables the spring constants (ct) of the torsion bar spring to be adjusted even during operation of the press, for example when adjusting the stroke rate.
- the spring constant (ct) of the torsion bar spring 1 gives the moment (Mt) acting in the end part 13 of the torsion bar spring 1.
- the retroactive force (F) acting on the tappet 12 thus results from the moment divided by the product of Lh times i, where Lh corresponds to the length of the handlebar lever 4 connected to the torsion bar spring 1.
- Fig. 2 shows a high-speed press with the press frame 10 and here four (times two) at fixed points 2 and rotary bearings at 3 Torsion bar springs 1.
- the plunger 12 is only partially recognizable.
- Figs. 3A to 3C are different options for an adjustable linkage the torsion bar spring 1 shown.
- the lever 8 is articulated at the other end of the plunger 12.
- the lever bearing point 11 is formed by a longitudinal extension of the lever 8 in the press frame 10 adjustable bearing with measures for pivoting the lever 8 in this.
- Fig. 3B the handlebar lever 4 is pivotally connected directly to the lever 8. Other end the lever 8 is articulated via a tab 6 on the plunger 12 so as to be pivotable.
- Fig. 3C shows the possibility of the extended arrangement of the handlebar lever 4, lever 8 and tab 6, wherein the movement of the plunger 12 is a deflection movement of the handlebar 4 causes.
- Lever 8 and the slidably mounted tab 6 remain aligned with each other.
- FIG. 4 could represent a section through the press shown in FIG. 2 in the area of the movement tap on the plunger 12 for the articulation of four times two torsion bar springs 1.
- the arrangements of handlebar lever 4, lever 8 and bracket 6 correspond to those 3B.
- the adjustability of the bearings for the respective lever bearing point 11 Lever 8 takes place together via a motor-driven shaft 14, one on one with Right-left-threaded spindle 15 attached worm wheel 16 and threaded parts 17 in the displaceable backdrops 18 forming the bearing points 11.
- the high-speed press with the press frame 10 in FIG. 5 has a plunger 19, the counter mass 20, a crank drive 21 articulated to a counter mass 20 and linear springs 2 fastened in fixed points 2 according to FIG. 4 to the balancing mass or counter mass 20 and plunger 19 second masses are guided linearly below the crank drive 21 to the press frame 10 and connected to one another via one or more link systems 22 with a pivot point 23 fixed to the frame and a link 24 mounted rotatably therein.
- Each of the links 24 is in adjustable eccentric bearings 25 on the plunger 19 and stored in adjustable eccentric bearings 26 on the counterweights 20.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Press Drives And Press Lines (AREA)
Description
- Fig. 1
- skizzenartig die Veränderung der Federkonstanten eines Drehstabes durch eine verstellbare Anlenkung,
- Fig. 2
- eine schnellaufende Presse mit am Pressengestell angebrachten Drehstabfedern,
- Fign. 3A bis 3C
- verschiedene Ausgestaltungen verstellbarer Anlenkungen von Drehstabfedern,
- Fig. 4
- die Anlenkanordnung von vier Drehstabfedern und
- Fig. 5
- eine schnellaufende Presse mit Massenausgleich und Massenkraftkompensation.
Claims (5)
- Presse, insbesondere schnellaufende Schneidpresse mit zwei vermittels Pressenantrieb (21) bewegten Massen (19, 20) von denen eine erste Masse (19) die Funktion des Stößels übernimmt und die zweite Masse (20) dem Massenausgleich dient und beide Massen (19, 20) untereinander wirkverbunden und unterhalb des Pressenantriebes (21) im Pressengestell (10) linear geführt sind, dadurch gekennzeichnet, daß die Massen (19, 20) untereinander vermittels zumindest eines im Pressengestell (10) gelagerten doppelseitigen Hebels (24) wirkverbunden sind und die zweite Masse (20) von dem Pressenantrieb getrieben ist.
- Presse nach Anspruch 1, dadurch gekennzeichnet, daß die erste Masse (19 und zweite Masse (20) durch ein spiegelsymmetrisches Hebelsystem (Lenkersystem 22) untereinander verbunden sind.
- Presse nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß beide Massen (19, 20) vermittels eines Federsystems (1, 2, 3, 4) mit dem Pressengestell verbunden sind, daß parallel zum Kurbeltrieb (21) zwischen Pressengestell und der einzelnen Masse (19, 20) gebildet ist.
- Presse nach Anspruch 3, gekennzeichnet durch zumindest eine jeder der beiden Massen (19, 20) zugeordneten linearen Federn (1), deren einer Endteil (13) über einen Hebel (8) mit einer Masse (12, 20, 21) und deren anderer Endteil in einem Festpunkt (2) mit dem Pressengestell verbunden ist und der Hebel (8) zweiarmig ausgeführt und in einem Hebellagerpunkt (11) gelagert ist, der in dem Pressengestell (10) in Erstreckung des Hebels (8) verschiebbar ist.
- Presse nach Anspruch 4, dadurch gekennzeichnet, daß die lineare Feder (1) ein Drehstab mit Lenkerhebel (4) ist.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4335013 | 1993-10-14 | ||
| DE4335013A DE4335013A1 (de) | 1993-10-14 | 1993-10-14 | Presse, insbesondere schnellaufende Schneidpresse |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0648596A1 EP0648596A1 (de) | 1995-04-19 |
| EP0648596B1 true EP0648596B1 (de) | 1998-08-05 |
Family
ID=6500127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP94115982A Expired - Lifetime EP0648596B1 (de) | 1993-10-14 | 1994-10-11 | Presse, insbesondere schnellaufende Schneidpresse |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0648596B1 (de) |
| DE (2) | DE4335013A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2137754T3 (es) * | 1997-12-12 | 1999-12-16 | Bruderer Ag | Prensa, especialmente prensa de estampar. |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1047925A (fr) * | 1950-07-25 | 1953-12-17 | Karl Eugen Fischer Fa | Dispositif d'équilibrage des machines |
| CH581281A5 (de) * | 1974-09-03 | 1976-10-29 | Bruderer Ag | |
| DE3332173A1 (de) * | 1982-09-06 | 1984-03-08 | Mabu-Pressen Maschinenfabrik Karl Burkard KG, 6370 Oberursel | Exzenterpresse |
| JPH069760B2 (ja) * | 1986-02-17 | 1994-02-09 | 三菱重工業株式会社 | 往復動機械のバランサ |
| JPH02229700A (ja) * | 1989-03-02 | 1990-09-12 | Sankyo Seisakusho:Kk | 機械式プレスの動的平衡装置 |
| CH684394A5 (de) * | 1991-12-11 | 1994-09-15 | Bruderer Ag | Einwellen-Stanzpresse. |
-
1993
- 1993-10-14 DE DE4335013A patent/DE4335013A1/de not_active Withdrawn
-
1994
- 1994-10-11 DE DE59406604T patent/DE59406604D1/de not_active Expired - Lifetime
- 1994-10-11 EP EP94115982A patent/EP0648596B1/de not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE4335013A1 (de) | 1995-04-20 |
| DE59406604D1 (de) | 1998-09-10 |
| EP0648596A1 (de) | 1995-04-19 |
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