EP0597212B1 - Verfahren zum Betrieb einer Stanzpresse beim Anfahren und Stillsetzen - Google Patents

Verfahren zum Betrieb einer Stanzpresse beim Anfahren und Stillsetzen Download PDF

Info

Publication number
EP0597212B1
EP0597212B1 EP93114981A EP93114981A EP0597212B1 EP 0597212 B1 EP0597212 B1 EP 0597212B1 EP 93114981 A EP93114981 A EP 93114981A EP 93114981 A EP93114981 A EP 93114981A EP 0597212 B1 EP0597212 B1 EP 0597212B1
Authority
EP
European Patent Office
Prior art keywords
eccentric shaft
angle
punch press
rotation
dead center
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
Application number
EP93114981A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0597212A1 (de
Inventor
Oskar Eigenmann
Helmut Messner
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.)
Bruderer AG
Original Assignee
Bruderer AG
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 Bruderer AG filed Critical Bruderer AG
Publication of EP0597212A1 publication Critical patent/EP0597212A1/de
Application granted granted Critical
Publication of EP0597212B1 publication Critical patent/EP0597212B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/26—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by cams, eccentrics, or cranks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/04—Frames; Guides
    • B30B15/041—Guides
    • 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
    • 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
    • B30B15/144—Control arrangements for mechanically-driven presses for stopping the press shaft in a predetermined angular position

Definitions

  • the invention relates to a method for operating a punch press when starting and stopping the same, which punch press is driven by a positionable drive via the clutch unit of a clutch / brake device, an eccentric shaft, a ram driven by the eccentric shaft for carrying at least one upper tool and a press table for carrying at least one Has lower tool, by means of which tools a strip-shaped workpiece arranged in between is machined, which punching press passes through a starting angle due to the overall moment of inertia of the moving components and the drive torque transmitted by the coupling unit to the eccentric shaft for acceleration from standstill to the operating stroke number and the contact between the tools and the belt starts at a given working angle position of the eccentric press.
  • Such a method is known from US-A-4 653 311.
  • the manufacturing accuracy of a stamped product is heavily dependent, among other things, on the respective ram height of the machine. As is generally known, this ram height determines the tool closing height or the immersion depth when the machine is in operation.
  • an unchanging ram height is specified for given embossing and cutting work at a given number of strokes, e.g. with a smaller number of strokes the embossments are not deep enough, with a higher number of strokes the embossments are too deep or the immersion depth of the tool stamps is too large, which is known to lead to undesirably large wear of the corresponding tool parts.
  • the eccentric shaft is drive-connected by closing the clutch with the drive located at the operating stroke number, in particular the flywheel, and thus accelerated from standstill to the operating speed.
  • the dynamic behavior of the punch press during the first machining process e.g. The punching process is defined as the first punch behavior, and it is this first punch behavior that determines the quality of the first punched part.
  • the first punch behavior is such that the first punching process does not take place with the number of operating strokes like the subsequent punching processes, i.e. that the dynamic behavior of the machine is not the same for the first and subsequent strokes, which has a negative effect on the accuracy of the first part.
  • a reduction in the number of operating strokes eliminates this disadvantage, but reduces the production, ie Number of pieces produced within a given period of time.
  • the invention seeks to remedy this.
  • the invention as characterized in the claims, solves the problem of creating a method for operating a punch press when starting and stopping the same, in which after the stop has been completed, the eccentric shaft is rotated back into a starting angle position according to which it is started again after it has been run through of the approach angle for accelerating to the operating stroke number is on the operating stroke number before the first machining contact takes place between the tool and the workpiece.
  • the advantages achieved by the invention are essentially to be seen in the fact that the first punch stroke takes place with a dynamic behavior of the punch press which is the same as the dynamic behavior in continuous operation. This means that when starting up, the strip to be processed is precisely machined during the first machining stroke, so that no rejects are produced.
  • Figure 1 shows schematically a punch press. It has a positionable drive 1.
  • This drive 1 contains an electric motor which can be controlled in any desired angular position and which drives the flywheel of the high-speed punch press according to generally known designs via a belt drive.
  • the flywheel is connected to a clutch / brake device 2, 3, which in turn is connected to the eccentric shaft 5, which is mounted in the machine frame 4.
  • the clutch / brake device 2, 3 has a clutch unit 2, by means of which the eccentric shaft 5 can be coupled or uncoupled from the drive 1, or its flywheel, and has a brake unit 3 with a brake disc 14, via which Brake disc 14, the eccentric shaft 5 can be braked against the machine housing 4. Details of this braking device can be found in CH-A-546 141 and US-A-3 805 931. It should be noted here that the clutch unit 2 and the brake unit 3 are non-positive designs, i.e. they grind when engaging or braking.
  • Reference numeral 11 generally designates the balance weight arrangement for balancing the rotating and oscillating forces occurring during the operation of the punch press.
  • the eccentric shaft rotates through all angular positions of a 360 ° angle and can obviously assume any angular position driven by the positionable drive at a standstill.
  • An upper dead center UD and a lower dead center LD are generally defined for the eccentric shafts 5 of the stamping presses, the articulation point of the connecting rod (s) on the eccentric shaft 5 being taken as the structural reference.
  • the tappet 7 At the top dead center UD, the tappet 7 has the largest at the bottom dead center LD the smallest distance from the press table 10.
  • a punch press is usually shut down or positioned approximately at top dead center UD.
  • the distance between the ram 7 and the press table 10 has the greatest value, the tool (consisting of upper tool 8 and lower tool 9) is open.
  • the clutch unit 2 is opened and the brake 3 is closed, i.e. the eccentric shaft 5 is uncoupled from the drive 1, the drive 1 with the flywheel idling at the operating speed and the crankshaft 5 stopped.
  • the abscissa relates to the angular position ⁇ of the eccentric shaft 5, the ordinate to the speed n of the same.
  • a reduction in the number of strokes may only be initiated after passing through the bottom dead center LD, the complete standstill before a 360 ° rotation before the tool and the metal strip have come into contact.
  • both the approach angle ⁇ B and, accordingly, the braking angle can be calculated in a control unit for the punch press.
  • a punch press is stopped at top dead center UD so that it can be manipulated in the open tool.
  • the press can thus be stopped at top dead center UD when rotating back from point C to point D (intermediate stop).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Presses (AREA)
  • Press Drives And Press Lines (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
EP93114981A 1992-11-11 1993-09-17 Verfahren zum Betrieb einer Stanzpresse beim Anfahren und Stillsetzen Expired - Lifetime EP0597212B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3479/92 1992-11-11
CH347992 1992-11-11

Publications (2)

Publication Number Publication Date
EP0597212A1 EP0597212A1 (de) 1994-05-18
EP0597212B1 true EP0597212B1 (de) 1996-04-10

Family

ID=4256866

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93114981A Expired - Lifetime EP0597212B1 (de) 1992-11-11 1993-09-17 Verfahren zum Betrieb einer Stanzpresse beim Anfahren und Stillsetzen

Country Status (7)

Country Link
US (1) US5522244A (ja)
EP (1) EP0597212B1 (ja)
JP (1) JPH06210500A (ja)
AT (1) ATE136497T1 (ja)
DE (1) DE59302184D1 (ja)
ES (1) ES2088619T3 (ja)
SG (1) SG48725A1 (ja)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5868020A (en) * 1997-04-29 1999-02-09 Allen-Bradly Company, Llc Brake time monitor and brake control system for a press having a programmable controller
EP0884811B1 (de) * 1997-06-12 2003-01-22 komax Holding AG Verfahren und Einrichtung zur Herstellung einer Crimpverbindung
DE59806973D1 (de) 1997-06-12 2003-02-27 Komax Holding Ag Dierikon Verfahren und Einrichtung zur Herstellung einer Crimpverbindung
EP0953438B1 (de) * 1998-04-30 2005-03-02 Bruderer Ag Stanzpresse, insbesondere Schnelläuferpresse
US6487885B2 (en) 2000-10-30 2002-12-03 Komax Holding Ag Method and apparatus for producing a crimped connection
EP1202404B1 (de) * 2000-10-30 2011-05-18 Komax Holding AG Verfahren und Einrichtung zur Herstellung einer Crimpverbindung
EP1582337A1 (de) * 2004-03-30 2005-10-05 Haulick + Roos GmbH Presse, stanz- oder umformautomat
CN102814389B (zh) * 2012-07-20 2015-04-22 芜湖电工机械有限公司 用于冲槽机上的滑块提升机构
MX2018006187A (es) * 2015-11-20 2018-08-01 Sms Group Gmbh Prensa de ruta con bloque deslizante.

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2414435B2 (de) * 1974-03-26 1978-07-13 Maschinenfabrik Weingarten Ag, 7987 Weingarten Vorrichtung zum stellungsgenauen Stillsetzen der Kurbelwelle einer Nutenstanzmaschine
US3888097A (en) * 1974-04-11 1975-06-10 Minster Machine Co Machine having a drive shaft and a method of operation
JPS5553278Y2 (ja) * 1978-02-09 1980-12-10
JPS5829600A (ja) * 1981-08-12 1983-02-21 株式会社　アマダ マイクロコンピユ−タによるプレスの制御装置
JPS6064799A (ja) * 1983-09-19 1985-04-13 Kiyouri Kogyo Kk プレス用定位置停止装置
JPS6123530A (ja) * 1984-07-12 1986-02-01 Mitsubishi Electric Corp タレツトパンチプレス用数値制御装置
US4653311A (en) * 1986-01-31 1987-03-31 Avondale Industries, Inc. Short stroke press with automated feed mechanism

Also Published As

Publication number Publication date
ATE136497T1 (de) 1996-04-15
US5522244A (en) 1996-06-04
DE59302184D1 (de) 1996-05-15
ES2088619T3 (es) 1996-08-16
SG48725A1 (en) 1998-05-18
JPH06210500A (ja) 1994-08-02
EP0597212A1 (de) 1994-05-18

Similar Documents

Publication Publication Date Title
EP2608952B1 (de) Verfahren zum betreiben einer presse mit unterantrieb und danach betriebene presse
DE3037688C2 (de) Verfahren zum Festwalzen von Kurbelwellen
EP0597212B1 (de) Verfahren zum Betrieb einer Stanzpresse beim Anfahren und Stillsetzen
EP3377311B1 (de) Weggebundene presse mit kulissenstein
AT401896B (de) Verfahren zum biegen eines werkstückes aus blech sowie blechbiegemaschine
EP2926920A1 (de) Pressenvorrichtung zum Bearbeiten eines Werkstücks
EP2367676B1 (de) Verfahren zur regelung einer schmiedepresse
DE2131013C2 (de) Ziehpresse
EP0724953A1 (de) Stanzpresse mit langem Werkzeugeinbauraum
DE2607762A1 (de) Hydraulische presse
EP0439684A1 (de) Stanzpresse
DE102012109150A1 (de) Verfahren und Einrichtung zum Betreiben einer Werkzeugmaschine wie Presse mit linear bewegbarem Hubelement
DE69106040T2 (de) Vorrichtung zum Massenausgleich in einer Presse.
DE69202370T2 (de) Dynamische Massenausgleichsvorrichtung mit einzelnem hin- und herbewegenden Gewicht für eine Stanzpresse mit doppelter Wirkung.
DE202006013502U1 (de) Antriebssystem für eine Umformmaschine
DE2912927A1 (de) Antrieb fuer eine presse
DE933780C (de) Stripperkran
EP1646462B1 (de) Verfahren zum umformen eines werkstücks
DE2918074A1 (de) Mechanische presse
EP0268681A1 (de) Doppeltwirkende spindelpresse
EP0432373B1 (de) Vorrichtung zum schrittweisen Vorschieben eines bandförmigen Werkstückes
EP2490886B1 (de) Arbeitsverfahren und einrichtung zum betreiben von pressen
DE102015117200A1 (de) Prägepresse und Verfahren zu deren Betrieb
DE2818519C3 (de) Rundhämmer-und Rundknetmaschine
DE4042190C2 (de) Einrichtung zur Beeinflussung des energetischen und dynamischen Verhaltens von Antrieben in Umformmaschinen

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT CH DE ES FR GB IT LI NL

17P Request for examination filed

Effective date: 19940610

17Q First examination report despatched

Effective date: 19950822

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

ITF It: translation for a ep patent filed
AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT CH DE ES FR GB IT LI NL

REF Corresponds to:

Ref document number: 136497

Country of ref document: AT

Date of ref document: 19960415

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: E. BLUM & CO. PATENTANWAELTE

ET Fr: translation filed
REF Corresponds to:

Ref document number: 59302184

Country of ref document: DE

Date of ref document: 19960515

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19960508

REG Reference to a national code

Ref country code: ES

Ref legal event code: BA2A

Ref document number: 2088619

Country of ref document: ES

Kind code of ref document: T3

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2088619

Country of ref document: ES

Kind code of ref document: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

REG Reference to a national code

Ref country code: CH

Ref legal event code: PFA

Owner name: BRUDERER AG

Free format text: BRUDERER AG#EGNACHER STRASSE 44#CH-9320 FRASNACHT (CH) -TRANSFER TO- BRUDERER AG#EGNACHER STRASSE 44#CH-9320 FRASNACHT (CH)

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20100927

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20110809

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20110920

Year of fee payment: 19

Ref country code: AT

Payment date: 20110914

Year of fee payment: 19

Ref country code: FR

Payment date: 20110928

Year of fee payment: 19

Ref country code: DE

Payment date: 20110923

Year of fee payment: 19

Ref country code: ES

Payment date: 20110926

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20110929

Year of fee payment: 19

REG Reference to a national code

Ref country code: NL

Ref legal event code: V1

Effective date: 20130401

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 136497

Country of ref document: AT

Kind code of ref document: T

Effective date: 20120917

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20120917

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20130531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130403

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120917

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120917

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130401

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20121001

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120917

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 59302184

Country of ref document: DE

Effective date: 20130403

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20131018

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120918