EP0255740A1 - Antrieb für Ziehbänke - Google Patents

Antrieb für Ziehbänke Download PDF

Info

Publication number
EP0255740A1
EP0255740A1 EP87201277A EP87201277A EP0255740A1 EP 0255740 A1 EP0255740 A1 EP 0255740A1 EP 87201277 A EP87201277 A EP 87201277A EP 87201277 A EP87201277 A EP 87201277A EP 0255740 A1 EP0255740 A1 EP 0255740A1
Authority
EP
European Patent Office
Prior art keywords
drive unit
carriage
pinion
rack
gear wheel
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
EP87201277A
Other languages
English (en)
French (fr)
Other versions
EP0255740B1 (de
Inventor
Gianluigi Buglioni
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.)
DANIELI NATISONE SPA
Danieli and C Officine Meccaniche SpA
Original Assignee
DANIELI NATISONE SpA
Danieli and C Officine Meccaniche SpA
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 DANIELI NATISONE SpA, Danieli and C Officine Meccaniche SpA filed Critical DANIELI NATISONE SpA
Priority to AT87201277T priority Critical patent/ATE61950T1/de
Publication of EP0255740A1 publication Critical patent/EP0255740A1/de
Application granted granted Critical
Publication of EP0255740B1 publication Critical patent/EP0255740B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
    • B21C1/27—Carriages; Drives
    • B21C1/30—Drives, e.g. carriage-traversing mechanisms; Driving elements, e.g. drawing chains; Controlling the drive

Definitions

  • the drive unit is an assemblage of elements on the draw benches which serves to provide the draw carriages with their to-and-­fro movement and the necessary force.
  • the invention concerns the drive cams and the elements which transmit to the draw carriages their movement and the required force.
  • the drive cams consist of a drum-type cam having frontal contact between a path on the cam and a connecting roller.
  • a third general problem with this type of drive is connected with the transverse component which drum-type cams create with frontal paths.
  • US 2,l26,453 discloses two coaxial cams with a circumferential action, which act on complex levers that act directly on the draw grippers.
  • US 2,234,728 is an improvement of US 2,l26,453.
  • GB 2,0l8,658 discloses circumferential cams acting on levers, which in turn operate the draw grippers.
  • GB 824,056 discloses a complex system of gears in association with free wheels, the gears providing motion for the carriages bearing the grippers.
  • the invention enables simpler cams to be produced by employing a harder material (the known art now requires frontal cams to be made of cast steel, thus limiting the choices available).
  • the invention enables also a better balancing and equal­ising of the whole system to be obtained when the motion is inverted.
  • the invention enables a drive in an oil bath or with force feed lubrication to be obtained, together with the considerable advantages produced thereby.
  • the invention provides an open, radial cam, which is called tangential or harmonic in some quarters and comprises on its periphery a rolling path on which a roller presses.
  • Such roller is connected to a shaft which actuates by means of a first rack a pair of coaxial gear wheels solidly fixed together and having a preferred ratio to each other.
  • the gear wheel not engaged with the first rack acts on a second rack comprised on a draw carriage.
  • two gear wheels not engaged with the first rack may be provided so as to balance better the stress transmitted to the carriage.
  • such wheels may be associated in only one gear wheel.
  • the shaft acts on a lever, which may have one or two arms and is connected at its end to the carriage in such a way that it can oscillate.
  • roller is associated directly with the aforesaid lever.
  • Such lever performs the same functions as the system which comprises a first rack on the shaft, a pair of gear wheels and a second rack on the draw carriage.
  • the cam-roller-shaft-etc. system is normally duplicated so as to have one carriage moving forward in the drawing step, while there is another carriage in the return step, such carriages holding the coaxial drawing grippers.
  • the invention is therefore embodied with a drive unit for draw benches which is suitable to provide carriages bearing draw grippers with a required, coordinated to-and-fro move­ment, a radial cam cooperating with each carriage and press­ing on a roller borne on a first shaft able to move axially with a first rack with which a pinion is engaged that is co­axial with and solidly fixed to a gearing-up gear wheel acting on a second rack included on the carriage, a desired prefer­red ratio existing between the pinion and the gear wheel, the pinion and gear wheel having an axis which is rotary but not displaceable.
  • a motor l0 is connected to a gearing-down unit ll which transmits motion to a cam shaft l2.
  • a gearing-down unit ll which transmits motion to a cam shaft l2.
  • two cams l3-ll3 are fitted to the cam shaft l2 and counterweights 29 are provided.
  • Such cams l3-ll3 may also be machined on the cam shaft l2 and be a part thereof.
  • cams l3-ll3 are of a radial type, or tangential type as otherwise denominated, and the path on them for cooperation with rollers l4-ll4 respectively is located on their circum­ferential periphery. The result of this is that cooperation between path and roller is the best possible, without different and simultaneous instantaneous peripheral speeds.
  • rollers l4-ll4 cooperate with a first shaft l5-ll5 supported and guided axially by bearings l9 in the draw bench.
  • the first shaft l5-ll5 may comprise elements to prevent rotation and springs to keep the respective roller l4-ll4 pressed against its respective cam l3-ll3.
  • a first rack l6-ll6 is comprised on the shaft l5-ll5 and cooperates with a pinion l7-ll7, which is, or is caused to be, solidly fixed to a second shaft 23-l23, to which a toothed wheel l8-ll8 is also solidly fixed.
  • the second shaft 23-l23 may comprise two toothed wheels l8-ll8, which are respectively referenced with A and B.
  • a determined ratio, selected as required during design work and dimensioning, is established between the toothed wheel l8-ll8 and pinion l7-ll7.
  • a system to store and recover energy is comprised at the end of or in cooperation with the first shaft l5-ll5 and may be a mechanical system with a spring or a hydraulic or combined system.
  • the system to store and recover energy consists of a plunger 20 cooperating with a chamber 2l, which in turn cooperates with a hydraulic storage reservoir 22.
  • the toothed wheel l8-ll8 (or the toothed wheels l8A-l8B-­ll8A-ll8B in the variant) cooperates with a second rack 25-l25 comprised on a carriage 24-l24 holding draw grippers 27 which act on rod 30 being drawn.
  • Means 28 to store and recover energy may be provided in cooperation with the draw carriages 24-l24 and may consist, for instance, of springs or hydraulic means.
  • the whole assemblage is contained in a suitably formed box-wise structure 26, which enables the system to be lubri­cated plentifully without any loss or waste of oil.
  • the actuation assemblage may consist also of a lever, so that instead of the first rack l6, pinion l7, toothed wheel l8 and second rack 25 one lever may be provided in cooperation with the first shaft l5 and carriage 24 and be supported by the structure so as to be able to oscillate.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)
  • Specific Conveyance Elements (AREA)
  • Control Of Electric Motors In General (AREA)
  • Feedback Control In General (AREA)
  • Pulleys (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
EP87201277A 1986-08-06 1987-07-04 Antrieb für Ziehbänke Expired - Lifetime EP0255740B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87201277T ATE61950T1 (de) 1986-08-06 1987-07-04 Antrieb fuer ziehbaenke.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT83391/86A IT1201802B (it) 1986-08-06 1986-08-06 Gruppo comando per banchi di trafilatura
IT8339186 1986-08-06

Publications (2)

Publication Number Publication Date
EP0255740A1 true EP0255740A1 (de) 1988-02-10
EP0255740B1 EP0255740B1 (de) 1991-03-27

Family

ID=11321189

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87201277A Expired - Lifetime EP0255740B1 (de) 1986-08-06 1987-07-04 Antrieb für Ziehbänke

Country Status (4)

Country Link
EP (1) EP0255740B1 (de)
AT (1) ATE61950T1 (de)
DE (1) DE3768875D1 (de)
IT (1) IT1201802B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5540372A (en) * 1992-11-04 1996-07-30 Redaelli Tecna Meccanica S.P.A. Cam activated hydraulic drive with hydro-pneumatic accumulator
WO2006028921A3 (en) * 2004-09-03 2006-05-26 Dayco Products Llc Torsional force linear tensioner

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112520833B (zh) * 2020-11-30 2021-08-31 鹤壁市质量技术监督检验测试中心 一种实验室污水中和装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE444479C (de) * 1926-03-28 1927-05-18 Wilhelm Helsper Rohrziehbank
US2126453A (en) * 1936-09-14 1938-08-09 William W Criley Apparatus for forming blanks from hot rolled wire stock
US2234728A (en) * 1939-07-12 1941-03-11 Ajax Mfg Co Feeding and straightening means
GB824056A (en) * 1957-07-18 1959-11-25 Fritz Singer A feeding mechanism, particularly for tube-stretching machines
US3693395A (en) * 1969-07-16 1972-09-26 Schumag Schumacher Metallwerke Reciprocating carriage drawing machine
EP0001073A1 (de) * 1977-09-03 1979-03-21 Oswald Forst Maschinenfabrik und Apparatebauanstalt GmbH & Co Kommanditgesellschaft Ziehmaschine
GB2018658A (en) * 1978-02-13 1979-10-24 Mannesmann Ag Carriage type drawing machines

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE444479C (de) * 1926-03-28 1927-05-18 Wilhelm Helsper Rohrziehbank
US2126453A (en) * 1936-09-14 1938-08-09 William W Criley Apparatus for forming blanks from hot rolled wire stock
US2234728A (en) * 1939-07-12 1941-03-11 Ajax Mfg Co Feeding and straightening means
GB824056A (en) * 1957-07-18 1959-11-25 Fritz Singer A feeding mechanism, particularly for tube-stretching machines
US3693395A (en) * 1969-07-16 1972-09-26 Schumag Schumacher Metallwerke Reciprocating carriage drawing machine
EP0001073A1 (de) * 1977-09-03 1979-03-21 Oswald Forst Maschinenfabrik und Apparatebauanstalt GmbH & Co Kommanditgesellschaft Ziehmaschine
GB2018658A (en) * 1978-02-13 1979-10-24 Mannesmann Ag Carriage type drawing machines

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5540372A (en) * 1992-11-04 1996-07-30 Redaelli Tecna Meccanica S.P.A. Cam activated hydraulic drive with hydro-pneumatic accumulator
WO2006028921A3 (en) * 2004-09-03 2006-05-26 Dayco Products Llc Torsional force linear tensioner

Also Published As

Publication number Publication date
DE3768875D1 (de) 1991-05-02
EP0255740B1 (de) 1991-03-27
IT1201802B (it) 1989-02-02
ATE61950T1 (de) 1991-04-15
IT8683391A0 (it) 1986-08-06

Similar Documents

Publication Publication Date Title
US3063708A (en) Electro-mechanical clamping drive with electric control
CN201033403Y (zh) 综合加工机换刀系统的松夹刀装置
JPS5536132A (en) Power steering for vehicle
EP0255740A1 (de) Antrieb für Ziehbänke
US3087355A (en) Constantly variable speed transmission
US5915296A (en) Multi-slide machine press
US4881399A (en) Double-action screw press
US4265137A (en) Gear selector mechanism for a vehicle gearbox
CN211654617U (zh) 变压器分接开关换挡到位声响和定位手感装置
DE917233C (de) Fliehkraftkupplung, insbesondere fuer Fahrradhilfsmotoren
DE901418C (de) Einrichtung fuer das langsame Drehen schwerer Wellen, z.B. von Turbinen und Generatoren
EP4005734A1 (de) Kopplungsmechanismus
US4735080A (en) Forming machine with ram-side ejector mechanism
US2213451A (en) Punch press
DE2327843C3 (de) Spindelschmiedepresse mit einem reversierbaren, polumschaltbaren Asynchronmotor
DE615343C (de) Schaltwerkswechselgetriebe
DE669066C (de) Fluessigkeitsgetriebe, insbesondere fuer Kraftfahrzeuge
DE569347C (de) Lagerung und Fuehrung des Druckkarrens von Schnellpressen
DE939744C (de) Dornstangenwiderlager fuer Rohrwalzwerke, insbesondere fuer Schraegwalzwerke
US5078002A (en) Hydraulic assembly to actuate forging presses
SU643245A1 (ru) Привод зажимного устройства
CN111370239A (zh) 变压器分接开关换挡到位声响和定位手感装置
DE571931C (de) Selbsttaetig hydraulisch schaltende Kupplung fuer Supporte von Werkzeugmaschinen
JPH0715621Y2 (ja) プレス機械のフィードバー駆動ストローク切換装置
US2764114A (en) Drawing press

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 BE CH DE ES FR GB GR IT LI LU NL SE

17P Request for examination filed

Effective date: 19880630

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: DANIELI NATISONE - OFFICINE MECCANICHE SRL

Owner name: DANIELI & C. OFFICINE MECCANICHE S.P.A.

17Q First examination report despatched

Effective date: 19900125

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: DANIELI NATISONE SPA

Owner name: DANIELI & C. OFFICINE MECCANICHE S.P.A.

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 BE CH DE ES FR GB GR IT LI LU NL SE

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

Ref country code: SE

Effective date: 19910327

Ref country code: NL

Effective date: 19910327

Ref country code: LI

Effective date: 19910327

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19910327

Ref country code: CH

Effective date: 19910327

Ref country code: BE

Effective date: 19910327

Ref country code: AT

Effective date: 19910327

REF Corresponds to:

Ref document number: 61950

Country of ref document: AT

Date of ref document: 19910415

Kind code of ref document: T

ET Fr: translation filed
REF Corresponds to:

Ref document number: 3768875

Country of ref document: DE

Date of ref document: 19910502

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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19910708

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: LU

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

Effective date: 19910731

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
K2C3 Correction of patent specification (complete document) published

Effective date: 19910327

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

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

Ref country code: GB

Payment date: 20060627

Year of fee payment: 20

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

Ref country code: DE

Payment date: 20060630

Year of fee payment: 20

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

Ref country code: FR

Payment date: 20060728

Year of fee payment: 20

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

Ref country code: IT

Payment date: 20060731

Year of fee payment: 20

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

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

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20070703