EP2490886A2 - Working method and assembly for operating presses - Google Patents
Working method and assembly for operating pressesInfo
- Publication number
- EP2490886A2 EP2490886A2 EP10787675A EP10787675A EP2490886A2 EP 2490886 A2 EP2490886 A2 EP 2490886A2 EP 10787675 A EP10787675 A EP 10787675A EP 10787675 A EP10787675 A EP 10787675A EP 2490886 A2 EP2490886 A2 EP 2490886A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- stroke
- plunger
- press
- regulated
- presses
- 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
Links
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
- B30B15/14—Control arrangements for mechanically-driven presses
- B30B15/148—Electrical control arrangements
Definitions
- the invention relates to a working method and a device for operating presses with plunger and tool, such as forming presses or cutting presses, e.g. Large- step presses, transfer presses, multi-ram transfer presses, such forming presses or cutting presses also classified in press lines.
- forming presses or cutting presses e.g. Large- step presses, transfer presses, multi-ram transfer presses, such forming presses or cutting presses also classified in press lines.
- Such types of forming presses, press lines or cutting presses essentially have the steps of feeding, possibly centering, shaping or cutting and depositing the parts with integrated transfer steps for the parts.
- means for a transfer system for transporting the parts to be formed or formed or to be cut or cut, if appropriate also via a centering system, are provided for this purpose.
- the interaction of these steps and systems is matched to the clocked mold strokes or cutting strokes of the respective forming press or cutting press. Both the clocked operation to be followed and in particular the superposition of
- Movements for the pressing and the transfer of the parts to be machined require distances that lead to a so-called free movement of the press. This required clearance is an essential criterion for the kinematic and structural design or design of presses of the type mentioned.
- these systems can be used to transport parts such as workpieces from operation to operation and their work
- both high pressing forces and variable ram movements should be feasible with at least one main drive and at least one secondary drive.
- the invention is based on the object, the workflow of the steps and means for operating forming presses or cutting presses of the type described above in consideration of fixed and newly established physical limits, such as the avoidance of collisions of the involved transfer means, tools and workpieces, the forming forces and the forming speeds in such a way to change at least required ram stroke height that
- a working method for operating of forming presses or cutting presses such as large-scale transfer presses, transfer presses, Multi-ram transfer presses, such forming presses or cutting presses also arranged in press lines, comprising the steps feeding, possibly centering, shaping or cutting and depositing the parts with integrated transfer steps for the parts, for which means for a transfer system for transporting the molded or formed or cut or cut parts, possibly also via a centering system, are provided, which are tuned to the clocked mold strokes or cutting strokes of the respective forming press or
- Working method is expandable when stroke stroke values are timed to> 1, e.g.
- the pressure stroke is increased by 1.5, and moreover, at least one value such as a first "position" of the stroke of the stroke is monitored over time, where a is the stroke and x is values of 0 to 2 * pi.
- a predetermined quantity thus merges into a value according to which the stroke of the ram in subregions is also controlled or regulated in order to set a relatively small ram stroke at a press stroke number in such a way as to ensure an optimized, sufficient clearance in place of the previously large, To achieve oversized clearance of the press.
- Hub a (0) / 2 + a (1) * cos (1 * x) + a (2) * cos (2 * x) + ... + b (1) * sin (1 * x) + b (2) * sin (2 * x) +
- x can run from 0 to 2 * Pi.
- the accuracy can be determined and set with a number of coefficients that are still functionally defined below.
- the course of the beginning and the end of the ram stroke is monitored, controlled and possibly regulated to a time or
- the position of the tappet tracked exactly reproducibly.
- the course of the ram stroke is also monitored, and values such as the first "position” as the position of the driving force from the ram and values as a second "position” as the position of separation of the driving force from the ram are measured.
- both the course of the beginning of the stroke within a first path and the course of the outlet of the hub can be monitored within a second path, measured you then controlled or regulated.
- the press is operated according to a program which comprises the aforesaid steps for the automatic control or regulation of the press, the program for these steps being adjustable or to be reached data, such as speed and
- the program comprising the aforementioned steps for the automatic control of the press 1, at least one of the program steps, such as
- the working method and program can be designed such that at least
- Transfer presses in press lines at least one press-to-press transfer movement for forming or cutting parts depending on at least one of the steps
- the device according to the invention for exercising the working method can be executed according to several variants:
- a servomotor is provided in the region of a main drive of the press.
- a clutch / brake combination can be provided for the regulated inlet to the first position and the regulated outlet to the second position.
- the device may also have a servomotor for controlled entry into the first position of a clutch / brake combination and for regulated discharge into the second position.
- a servomotor for controlled entry into the first position of a clutch / brake combination and for regulated discharge into the second position.
- Machine elements can be made smaller and optimized and thereby costs can be reduced, since also the rotating and moving masses are reduced and thereby the entire (expensive) drive train can be made smaller.
- the invention thus solves the problem initially posed that in the workflow of
- FIG. 3 illustrates that the potential of a higher stroke frequency, ie a higher performance such as the number of pieces in the unit time during the molding or cutting of workpieces can be tapped. This can be exploited, in particular, if the geometry of the parts allows a short residence time in the clearance of the plunger stroke. In the best case, then even the shorter ram stroke virtually pass through without stoppage of the plunger during part transfer.
- Fig. 1 is a graphical representation of a hypothetical plunger curve as the state of
- FIG. 2 is a graphical representation of a plunger curve according to the invention, wherein, moreover, comparable to the above data, a plunger stroke of 1000 mm and clocked at a press stroke of 24.7 / min are given,
- Fig. 3 shows the graphical representation according to Fig. 1 and Fig.2 in comparison for the purpose
- FIG. 5 is a schematic representation of the press (1) with one of the barrel of the plunger (2) in a first position (A) and a second position (B) shown in FIG. 7th
- servomotor (5), 6 is a schematic representation of the press (1) with one of the barrel of the plunger (2) in a first position (A) and a second position (B) shown in FIG. 7th
- Fig. 7 is a graphical representation of the monitoring and control in the course of the stroke (H) of the plunger (2) in the first "position" (A) and the hub (H) of the
- the working method according to the invention for operating a press 1 schematically reproduced in FIGS. 4 to 6 with said plunger 2 and a tool 2.1 can be used for forming presses or blanking presses.
- the working method can thus be used in
- Forming presses such as large-scale transfer presses, transfer presses, multi-ram transfer presses or cutting presses in non-illustrated press lines for forming or cutting parts 2.2 with essentially the steps, feeding, possibly centering, shaping or cutting and storage of the parts 2.2 with integrated transfer steps for the parts 2.2 are easily integrated.
- values for the stroke H of the tappet 2 can be given in clocked form, for example at a press stroke number increased by 1.5.
- at least one value such as a first "position” A is monitored in the course of the stroke H over a time t at which first "position” A a full drive force transmission to the plunger 2 is measured.
- this monitoring and control can also be performed by tracking the position of the angle of rotation on a responsible rotating machine element.
- the outlet of the stroke H is monitored and a second "position" B of a separation of the driving force is measured by the plunger 2, as can be seen from Fig. 7.
- the outlet of the stroke H is not only monitored, but advantageous in the area A second way regulated to reproducibly exactly adhere to this "position" B of the plunger 2, and analogous to the first "position” A time or rotation angle dependent.
- Hub a (0) / 2 + a (1) * cos (1 * x) + a (2) * cos (2 * x) + ... + b (1) * sin (1 * x) + b (2) * sin (2 * x) + ...
- coefficients can be formed according to the following example: ia (i) b (i)
- the accuracy of the present invention running cyclic movements of the plunger 2 can therefore be determined and set with a number of coefficients, which are thus functionally defined.
- the method is rationally practicable through the use of a program comprising the aforementioned steps and values for automatic control of the press 1.
- the program comprising the aforementioned steps for the automatic control of the press 1, at least one of the program steps, such as
- the program may further comprise settable or attainable data for these steps, such as speed and acceleration of the plunger 2 and a minimum clearance of the press 1, measured at the height of the stroke H to be given.
- the working method and program can be designed such that in transfer presses in press lines, at least one press-to-press transfer movement for forming or cutting parts in response to at least one of the steps
- said steps may relate to a transfer movement both preceding and subsequent.
- FIGS. 5 and 6 A device required for carrying out the method of operation is illustrated schematically in FIGS. 5 and 6, but is shown sufficiently schematically because of its simplicity.
- the operation according to the invention of the press 1 shown schematically in FIG. 4 with plunger 2 and tool 2.1 will be clear and easy to follow for the person skilled in the art.
- Fig. 4 are the
- a transfer system 2.3 for transporting the parts to be formed or formed or to be cut or cut 2.2, possibly also via a centering system, not shown, indicated.
- the device has, for example, according to FIG. 5 for the regulated inlet of the tappet 2 in the first essential to the invention A and the regulated outlet in the second essential to the invention B a servo motor 5.
- This servomotor 5 can be arranged in the region of a main drive 4 of the press 1, the main drive 4 can be switched on or designed as a main drive 4.
- Fig. 6 is shown, for example, that the respective regulated inlet to the position A and outlet from the position B, a clutch brake combination 6 before or after the main drive 4 or is integrated into this.
- the second "position" B monitor a separation of the driving force from the plunger 2 analog, measure and regulate in the region of the second path to reproducibly comply exactly this "position" B of the plunger 2 can.
- the developed by the invention economic and feasible technical-functional advantages secure a low-cost technologically improved production of the generic presses at the producer with an increased utility value of the same for the operator.
- the invention has an advantageous effect on the design of the buildings surrounding the generic systems.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Presses (AREA)
- Press Drives And Press Lines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009050390A DE102009050390A1 (en) | 2009-10-22 | 2009-10-22 | Working method and apparatus for operating presses |
PCT/DE2010/001208 WO2011047661A2 (en) | 2009-10-22 | 2010-10-19 | Working method and assembly for operating presses |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2490886A2 true EP2490886A2 (en) | 2012-08-29 |
EP2490886B1 EP2490886B1 (en) | 2016-03-02 |
Family
ID=43533270
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10787675.7A Not-in-force EP2490886B1 (en) | 2009-10-22 | 2010-10-19 | Working method and assembly for operating presses |
Country Status (7)
Country | Link |
---|---|
US (1) | US8631742B2 (en) |
EP (1) | EP2490886B1 (en) |
CN (1) | CN102725134B (en) |
BR (1) | BR112012009330A2 (en) |
DE (1) | DE102009050390A1 (en) |
ES (1) | ES2567461T3 (en) |
WO (1) | WO2011047661A2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012109150A1 (en) * | 2012-09-27 | 2014-03-27 | Schuler Pressen Gmbh | Method and device for operating a machine tool such as press with linearly movable lifting element |
CN105711148B (en) * | 2016-03-18 | 2017-02-08 | 济南二机床集团有限公司 | Optimization method of servo and mechanical press mixed line beat |
Family Cites Families (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD227629A1 (en) * | 1984-09-07 | 1985-09-25 | Fz F Umform U Plastverarbeitun | CURVED GEARBOX FOR TRANSFER FACILITIES FOR PRESSENMECHANIZATION |
US5588344A (en) * | 1994-06-13 | 1996-12-31 | Murata Machinery, Ltd. | Electric servo motor punch press ram drive |
DE19642962A1 (en) * | 1996-10-17 | 1998-04-23 | Mueller Weingarten Maschf | Hydraulic transfer press |
JPH10249591A (en) * | 1997-03-06 | 1998-09-22 | Olympus Optical Co Ltd | Press forming machine |
JP3422456B2 (en) * | 1997-03-31 | 2003-06-30 | 株式会社小松製作所 | Servo press controller |
JPH10314998A (en) * | 1997-05-14 | 1998-12-02 | Yamada Dobby Co Ltd | Press working method |
JP4109775B2 (en) * | 1998-12-21 | 2008-07-02 | 株式会社アマダエンジニアリングセンター | Press machine |
JP2004034111A (en) * | 2002-07-04 | 2004-02-05 | Komatsu Aatec Kk | Driving-gear of press and driving method for the same |
DE102004015739B4 (en) | 2004-03-29 | 2006-04-13 | Müller Weingarten AG | Method for transporting workpieces in multiple press system with independent transfer drives with electronic control moving between press operations |
DE102004030678B4 (en) | 2004-06-24 | 2006-03-30 | Müller Weingarten AG | Cushioning device with hybrid drive |
DE102005024822A1 (en) | 2005-05-27 | 2006-11-30 | Müller Weingarten AG | Method for optimizing the transport movement of workpieces in transfer presses |
DE102005040762A1 (en) | 2005-08-26 | 2007-03-01 | Müller Weingarten AG | Manufacturing production line has series of presses with workpieces transferred by controlled handling units |
ES2452022T3 (en) * | 2006-02-06 | 2014-03-31 | Abb Research Ltd. | Press line system and method |
DE102007026727B4 (en) * | 2006-06-08 | 2014-12-31 | Müller Weingarten AG | Drive system of a forming press |
DE102006033562B3 (en) * | 2006-07-20 | 2008-02-28 | Schuler Pressen Gmbh & Co. Kg | Servo press with energy management |
DE102007003335B4 (en) | 2007-01-17 | 2009-11-05 | Schuler Pressen Gmbh & Co. Kg | Press and control procedures for these |
DE102007024024A1 (en) | 2007-05-22 | 2008-11-27 | Müller Weingarten AG | Hybrid drive for a multi-ram transfer press or a press line |
DE102007026227A1 (en) | 2007-06-05 | 2008-12-11 | Yes-Sun Holdings Ltd. | Dryer for evaporating water contained in object, has top cover with taper end, whose angle is greater than zero degrees or smaller/equal to thirty five degrees, where edge of lower side of cover is arranged at groove |
DE102008051209B4 (en) * | 2008-10-14 | 2012-02-16 | Ortlinghaus-Werke Gmbh | Control system for influencing the ram dynamics in press machines |
DE102008064229A1 (en) * | 2008-12-22 | 2010-07-01 | Müller Weingarten AG | Method for controlling a forging press |
JP5476106B2 (en) * | 2009-12-07 | 2014-04-23 | アイダエンジニアリング株式会社 | Control method and control apparatus for electric servo press |
JP5470223B2 (en) * | 2010-11-09 | 2014-04-16 | アイダエンジニアリング株式会社 | Servo press control device and control method |
-
2009
- 2009-10-22 DE DE102009050390A patent/DE102009050390A1/en not_active Withdrawn
-
2010
- 2010-10-19 US US13/502,897 patent/US8631742B2/en not_active Expired - Fee Related
- 2010-10-19 BR BR112012009330A patent/BR112012009330A2/en not_active Application Discontinuation
- 2010-10-19 CN CN201080047679.XA patent/CN102725134B/en not_active Expired - Fee Related
- 2010-10-19 WO PCT/DE2010/001208 patent/WO2011047661A2/en active Application Filing
- 2010-10-19 ES ES10787675.7T patent/ES2567461T3/en active Active
- 2010-10-19 EP EP10787675.7A patent/EP2490886B1/en not_active Not-in-force
Non-Patent Citations (1)
Title |
---|
See references of WO2011047661A2 * |
Also Published As
Publication number | Publication date |
---|---|
ES2567461T3 (en) | 2016-04-22 |
US8631742B2 (en) | 2014-01-21 |
US20120210887A1 (en) | 2012-08-23 |
CN102725134B (en) | 2015-03-11 |
CN102725134A (en) | 2012-10-10 |
BR112012009330A2 (en) | 2017-06-06 |
WO2011047661A3 (en) | 2011-09-15 |
WO2011047661A2 (en) | 2011-04-28 |
DE102009050390A1 (en) | 2011-04-28 |
EP2490886B1 (en) | 2016-03-02 |
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