EP0389736A2 - Machine de profilage à rouleaux - Google Patents

Machine de profilage à rouleaux Download PDF

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Publication number
EP0389736A2
EP0389736A2 EP89830464A EP89830464A EP0389736A2 EP 0389736 A2 EP0389736 A2 EP 0389736A2 EP 89830464 A EP89830464 A EP 89830464A EP 89830464 A EP89830464 A EP 89830464A EP 0389736 A2 EP0389736 A2 EP 0389736A2
Authority
EP
European Patent Office
Prior art keywords
base
shafts
centre
stand
roll
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.)
Withdrawn
Application number
EP89830464A
Other languages
German (de)
English (en)
Other versions
EP0389736A3 (fr
Inventor
Aleardo Chezzi
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.)
Oto Mills SpA
Original Assignee
Oto Mills 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 Oto Mills SpA filed Critical Oto Mills SpA
Publication of EP0389736A2 publication Critical patent/EP0389736A2/fr
Publication of EP0389736A3 publication Critical patent/EP0389736A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/06—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles
    • B21D5/10—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles for making tubes
    • B21D5/12—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles for making tubes making use of forming-rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/02—Rolling stand frames or housings; Roll mountings ; Roll chocks
    • B21B2031/023—Transverse shifting one housing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/02—Rolling stand frames or housings; Roll mountings ; Roll chocks
    • B21B31/06—Fastening stands or frames to foundation, e.g. to the sole plate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts
    • B21B31/10—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts by horizontally displacing, i.e. horizontal roll changing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B35/00—Drives for metal-rolling mills, e.g. hydraulic drives
    • B21B35/14—Couplings, driving spindles, or spindle carriers specially adapted for, or specially arranged in, metal-rolling mills
    • B21B35/141—Rigid spindle couplings, e.g. coupling boxes placed on roll necks

Definitions

  • the present invention relates to a roll forming machine.
  • Such a machine is intended specifically, though not exclusively, for use in the manufacture of metal products, in particular, welded tube and other sections.
  • the prior art embraces roll forming machines that consist in a plurality of stands arranged in succession, each of which equipped with at least two work rolls mounted to relative centre shafts and disposed with axes parallel; the shafts are supported in rotation at each end by bearings incorporated into sturdy uprights, and caused to revolve about their respective axes generally in opposite directions.
  • Each section to be formed requires a series of profiled rolls, of which the dimensions and shape will be determined by the dimensions and shape of the section itself. Thus, it happens that a change in the section to be rolled, i.e. of the particular item scheduled for production, dictates total or part replacement of the entire series of profiled rolls at the various stands.
  • the prior art embraces a number of expedients aimed at achieving the object in question, an essential feature of which is that the single roll stands, or entire sets of stands, are mounted permanently to a base that can be fastened to and removed from the fixed bed of the machine. Replacement of this type of stand, whether singly or in sets, can therefore be effected swiftly by removing the relative base from the fixed bed and positioning another base with a further stand or set of stands in its place; the replacement stands will have been assembled and adjusted previously, away from the line, in such a way that their preparation does not interfere with production proper. Installation down time is thus limited to the amount of time needed to remove one stand or set of stands and fit the newly assembled and adjusted replacement stand, or set of stands.
  • the prior art embraces a further expedient aimed at overcoming this coupling problem, which consists in the adoption of a third, fixed upright installed permanently alongside each station occupied by a removable base carrying two replaceable uprights; the third upright affords two height-adjustable supports associated rotatably with and carrying two connecting shafts which are coupled to the power transmission shafts on the one hand, and aligned coaxially with the roll centre shafts on the other.
  • the association between each centre shaft and the corresponding connecting shaft is brought about by way of a coupling, 'made' automatically when the centre shaft is positioned for operation; as the shaft is manoeuvred into place, its projecting end registers with the end of the connecting shaft, whereupon the two shafts turn as one.
  • the coupling separates automatically when the rolls are changed, with removal of the stand naturally distancing each centre shaft from the relative connecting shaft. Whilst such an arrangement functions perfectly well in effect, there is nonetheless the drawback that it requires a third upright in addition to the two uprights of each stand, incorporating bearings for the connecting shafts, plus a system capable of positioning each support in such a way that the relative connecting shaft aligns coaxially with the corresponding roll centre shaft.
  • the object of the present invention is to overcome the various drawbacks and shortcomings described above.
  • 1 comprehensively denotes one of a train of roll stands making up a roll forming machine as utilized in the continuous production of metal sections, and in the case of the example illustrated, of metal tube.
  • the single stand 1 is equipped with two work rolls 12 and 13, disposed with axes parallel and mounted to relative centre shafts 42 and 43 with which they rotate as one.
  • the centre shafts 42 and 43 are permanently associated with and supported, both free to rotate about their respective axes, in bearings 14, 34 and 15, 35 afforded by two massive vertical columns, or uprights 17 and 31.
  • the distance between centres of the rolls 12 and 13 is selected utilizing a screw mechanism 19, by means of which one bearing 14 can be adjusted for height on the relative upright 17; the height of the corresponding bearing 34 on the other upright 31 is adjusted by way of a similar mechanism denoted 18.
  • the two mechanisms 18 and 19 are interconnected through a shaft 21, by means of which a movement identical in direction and degree can be transmitted to both bearings 14 and 34 on their respective uprights 17 and 31.
  • the upright denoted 17 is rigidly attached to a base 2 that can be fastened to and removed from a fixed bed 3.
  • the removable base 2 rests on a horizontal table 4, across which it can be traversed through a short distance, guided in a direction parallel to the axes of the roll centre shafts 42 and 43, and to which it can be clamped with the assistance of a fixed stop 5.
  • the base 2 is clamped securely both in the direction parallel to the shafts 42, 43 and in the vertical direction, registering as it does with an inclined surface 7 of the stop 5 that forms an acute angle with the table 4; the corresponding edges 6 of the base will be seen to be complementarily angled.
  • a movable stop located at the side of the base 2 opposite from the side engaged by the fixed stop 5, which affords an angled surface 11 that engages the relative angled edge 6 of the base 2 and is screwed to the bed 3 by means of suitable fasteners 8.
  • the projection denoted 25 engages the corresponding side of the base 2 during the stroke that distances the stand from the fixed stop 5 and thus enables its removal from the bed 3, whereas the remaining projection 26 engages the opposite side of the base 2 during the stroke that brings the stand toward the fixed stop 5 and thus enables its being clamped to the bed 3.
  • the upright denoted 31 is fastened permanently to the bed 3, and therefore fixed.
  • the two bearings 34 and 35 carried by the fixed upright 31 accommodate two coupling sleeves 44 and 45, freely rotatable about parallel axes, which are disposed horizontal and aligned respectively with the roll centre shafts 42 and 43 and set in motion by two drive shafts 36 and 37 coupled to a geared motor 30.
  • the one sleeve 44 presents an internally splined profile 46 designed to accept the projecting end of the corresponding centre shaft 42, which is provided with a matching externally splined profile 48, such that sleeve and shaft can engage in an axially slidable fit while being obliged to rotate as one.
  • the other sleeve 45 likewise affords an internally splined profile 47, and the end of the corresponding centre shaft 43 an externally splined profile 49, such that these two parts also are axially slidable in relation to one another while forced to rotate as one.
  • each coupling incorporates a device comprising a ball 56, of given diameter, seated in a radial socket 57 afforded by the sleeve 44 and 45.
  • the ball 56 is biased toward the axis of rotation by a spring 58, and projects in relation to the root circle of the internal splines 46; in addition, the dimensions of the ball 56 are such that it can be part-inserted into the space between two adjacent splines 51 of the externally splined profile 48.
  • the ball 56 is seated in and guided by the radial socket 57 in such a way that its centre coincides permanently with the median radial plane passing through one of the internal splines 46. Alignment is brought about between the projecting end of the shaft 42 (and 43) and the corresponding sleeve 44 (and 45) as the one approaches the other: initially, the ball 56 will enter into contact with a frusto-conical end section 52 of the shaft 42, the tapered profile of which facilitates its entry; thereafter, as insertion commences, the sleeve 44 maintains a slow rotation, and the ball 56, urged by its spring 58 against the tapered end of the external profile 48, eases into one of the spaces between two relative splines 51.
  • the removal of the stand 1, or set of stands, is accomplished with ease by detaching the movable stop 9 to release the base 2, and then causing the base itself to traverse from left to right in the direction of the arrow 22 by actuating the ram 23 and producing a movement sufficient to slide the roll centre shafts 42 and 43 axially clear of the sleeves 44 and 45, separate the two parts of the bearing height adjustment shaft 21, and distance the edge 6 of the base 2 from the fixed stop 5.
  • the entire assembly comprising base 2 and upright 17, standing free with centre shafts 42 and 43 and respective forming rolls 12 and 13 cantilevered from the bearings 14 and 15, can be removed from the bed 3 and replaced with an assembly similar in all respects save for the fact of being fitted with two rolls suitable for the changeover product.
  • the replacement roll stand is installed by lowering the base 2 onto the table 4 and actuating the ram 23, whereupon the projection denoted 26 will traverse the base into contact with the angled surface 7 of the fixed stop 5; during this movement, the splined ends 48 and 49 of the new shafts 42 and 43 will locate in the sleeves 44 and 45, and engage subsequently to the point where, fully inserted, shafts and sleeves rotate as one.
  • the journals of the roll centre shafts 42 and 43 and of their respective bearings 14 and 15 will be proportioned such that deflection at the projecting ends 48 and 49, produced by bending stress, is kept within limits that can still ensure effortless location of the ends in the sleeves 44 and 45.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
EP19890830464 1989-03-31 1989-10-24 Machine de profilage à rouleaux Withdrawn EP0389736A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8940053A IT1233985B (it) 1989-03-31 1989-03-31 Profilatrice
IT4005389 1989-03-31

Publications (2)

Publication Number Publication Date
EP0389736A2 true EP0389736A2 (fr) 1990-10-03
EP0389736A3 EP0389736A3 (fr) 1991-04-03

Family

ID=11247263

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890830464 Withdrawn EP0389736A3 (fr) 1989-03-31 1989-10-24 Machine de profilage à rouleaux

Country Status (3)

Country Link
EP (1) EP0389736A3 (fr)
JP (1) JPH0318410A (fr)
IT (1) IT1233985B (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1132156A2 (fr) * 2000-03-04 2001-09-12 VAI SEUTHE GmbH Support pour une machine à profiler
EP2251110A1 (fr) * 2009-05-13 2010-11-17 DREISTERN GmbH & Co.KG Machine à profiler
AT515177A1 (de) * 2013-12-10 2015-06-15 Asmag Holding Gmbh Antriebssystem sowie damit ausgerüstete Profilieranlage
CN116618445A (zh) * 2023-07-24 2023-08-22 山东高原油气装备有限公司 一种防形变的钢管加工用热轧装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2605501B2 (ja) * 1991-05-07 1997-04-30 株式会社豊田自動織機製作所 変速機におけるギアとヨークの連結構造
JP5881634B2 (ja) * 2013-03-25 2016-03-09 ジヤトコ株式会社 保持具
CN103934275B (zh) * 2014-04-09 2017-01-04 中冶南方工程技术有限公司 一种轧辊传动接轴

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1808125A1 (de) * 1968-11-09 1970-05-27 Demag Ag Walzwerksanlage zur Verformung von Baendern oder Blechstreifen,insbesondere zu Laengsnahtrohren
US3901060A (en) * 1974-03-08 1975-08-26 Emiliane Off Mecc Forming unit for machines for manufacturing welded pipes
DE2732233B1 (de) * 1977-07-16 1978-11-30 Masch Und Werkzeugbau Gmbh Profiliermaschine
JPS6138719A (ja) * 1984-07-31 1986-02-24 Nisshin Steel Co Ltd 成形ロ−ルスタンド
EP0320465A2 (fr) * 1988-09-23 1989-06-14 Oto Mills S.P.A. Machine de profilage à rouleaux

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60163U (ja) * 1983-06-16 1985-01-05 三菱電機株式会社 教育機器

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1808125A1 (de) * 1968-11-09 1970-05-27 Demag Ag Walzwerksanlage zur Verformung von Baendern oder Blechstreifen,insbesondere zu Laengsnahtrohren
US3901060A (en) * 1974-03-08 1975-08-26 Emiliane Off Mecc Forming unit for machines for manufacturing welded pipes
DE2732233B1 (de) * 1977-07-16 1978-11-30 Masch Und Werkzeugbau Gmbh Profiliermaschine
JPS6138719A (ja) * 1984-07-31 1986-02-24 Nisshin Steel Co Ltd 成形ロ−ルスタンド
EP0320465A2 (fr) * 1988-09-23 1989-06-14 Oto Mills S.P.A. Machine de profilage à rouleaux

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 10, no. 193 (M-496)(2249) 08 July 1986, & JP-A-61 38719 (NISSHIN STEEL CO.LTD.) 24 February 1986, *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1132156A2 (fr) * 2000-03-04 2001-09-12 VAI SEUTHE GmbH Support pour une machine à profiler
EP1132156A3 (fr) * 2000-03-04 2002-08-28 VAI SEUTHE GmbH Support pour une machine à profiler
EP2251110A1 (fr) * 2009-05-13 2010-11-17 DREISTERN GmbH & Co.KG Machine à profiler
AT515177A1 (de) * 2013-12-10 2015-06-15 Asmag Holding Gmbh Antriebssystem sowie damit ausgerüstete Profilieranlage
AT515177B1 (de) * 2013-12-10 2015-08-15 Asmag Holding Gmbh Antriebssystem sowie damit ausgerüstete Profilieranlage
CN116618445A (zh) * 2023-07-24 2023-08-22 山东高原油气装备有限公司 一种防形变的钢管加工用热轧装置
CN116618445B (zh) * 2023-07-24 2023-09-15 山东高原油气装备有限公司 一种防形变的钢管加工用热轧装置

Also Published As

Publication number Publication date
IT1233985B (it) 1992-04-22
EP0389736A3 (fr) 1991-04-03
IT8940053A0 (it) 1989-03-31
JPH0318410A (ja) 1991-01-28

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