EP1062073A1 - Machine a rectifier des produits semi-finis, en particulier, des billettes - Google Patents

Machine a rectifier des produits semi-finis, en particulier, des billettes

Info

Publication number
EP1062073A1
EP1062073A1 EP99911742A EP99911742A EP1062073A1 EP 1062073 A1 EP1062073 A1 EP 1062073A1 EP 99911742 A EP99911742 A EP 99911742A EP 99911742 A EP99911742 A EP 99911742A EP 1062073 A1 EP1062073 A1 EP 1062073A1
Authority
EP
European Patent Office
Prior art keywords
grinding
axis
frame
billet
grinding 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
EP99911742A
Other languages
German (de)
English (en)
Other versions
EP1062073B1 (fr
Inventor
Giorgio Carraro
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP1062073A1 publication Critical patent/EP1062073A1/fr
Application granted granted Critical
Publication of EP1062073B1 publication Critical patent/EP1062073B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
    • B24D5/06—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor with inserted abrasive blocks, e.g. segmental
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B27/00—Other grinding machines or devices
    • B24B27/033—Other grinding machines or devices for grinding a surface for cleaning purposes, e.g. for descaling or for grinding off flaws in the surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/10—Single-purpose machines or devices
    • B24B7/12—Single-purpose machines or devices for grinding travelling elongated stock, e.g. strip-shaped work

Definitions

  • the present invention relates to a machine for grinding
  • Billets produced by rolling generally have surface irregularities mainly due to cracks, scum and other processing residues resulting from the melting and cooling processes.
  • the grinding wheel is rotated about its own axis and is brought into contact with the billet with a sliding movement relative thereto in order to remove a predetermined thickness of material and consequently to improve the surface quality of the billet.
  • billets of larger cross-section such as
  • surface grinding takes place by aligning the grinding wheel along the axis of movement of the billet and by performing several forward .runs of the billet, the grinding wheel being moved transverse the axis of movement for each run so as to grind the
  • the billet has a typical surface shape with depressions extending longitudinally, the action of the grinding wheel involves the elimination of these depressions by the undesired removal of a greater quantity of material than
  • the problem upon which the present invention is based is that of providing a machine for grinding semi-finished products, particularly billets, which is designed structurally
  • Figure 1 is a partial side elevational view of a grinding machine according to the invention
  • Figure 2 is a section taken on the line II-II of Figure 1
  • Figure 3 is a front elevational view of the machine of the
  • Figure 4 is a side elevational view showing a detail of the machine of the previous drawings, on an enlarged scale
  • Figures 5 and 6 are an axial section and a side elevational view, respectively, of a grinding wheel with which the grinding
  • Figure 7 is a plan view of the grinding wheel of Figures 5 and
  • Figure 8 is a schematic view showing, in plan, pairs of
  • Figure 9 is a schematic front elevational view of the grinding
  • the machine 1 comprises a substantially parallelepipedal
  • Each frame 4 is formed by pairs of rigidly-interconnected longitudinal and transverse elements indicated 4a, 4b.
  • the billet 2 being ground is guided beneath the framework 3 along an axis of
  • the machine 1 further comprises a first frame and a second frame, indicated 6 and 7, respectively, which are mounted on the framework 3 and are movable relative thereto as
  • the first frame 6 is mounted inside the framework 3 and is also of parallelepipedal shape.
  • the frame 6 is formed by pairs of first longitudinal elements 6a connected by first transverse elements 6b and rigidly interconnected by means of
  • each longitudinal element 4a of the framework 3 At one end of each longitudinal element 4a of the framework 3, at the same end of the framework, a respective arm 8 is articulated about a corresponding pin 8a projecting inside the framework. Each arm 8 is in turn articulated at its
  • the arms 8 thus constitute a parallelogram device for moving the first frame 6 relative to the framework 3.
  • articulation to the first frame 6 describe paths along arcs of circles centered on the axes of the pins 8a, so as to cause the first frame 6 to move in a direction which, for limited angles of pivoting about the pins 8a, is approximately straight and
  • a pair of actuators such as, for example, two hydraulic jacks 10 shown schematically in Figure 1, is provided for moving the first frame 6.
  • Each jack 10 is mounted on a support element 11 extending from the respective upper longitudinal element 4a of the framework 3 and has a rod 12 acting on the
  • first frame 6 in the region of the points of articulation to the arms 8 .
  • the second frame 7 is mounted inside the first frame 6 and has a similar parallelepipedal shape.
  • the frame 7 is formed by a pair of opposed end structures rigidly
  • Each end structure is formed by pairs of rigidly interconnected second longitudinal elements 7a and second transverse elements 7b.
  • the cross-members 13 serve to support two pairs of supports 14 with bearings 15 between which two respective shafts 16, 17 are supported for rotation.
  • a respective circular grinding wheel 18, 19 is keyed to each shaft 16, 17.
  • Each shaft 16, 17 is also arranged, at one of its ends, for
  • the belt transmissions are driven by respective electric
  • the grinding wheels 18, 19 are positioned, relative to the second frame 7, with parallel axes of rotation Ml and M2 which are inclined angularly to an axis transverse the axis B of movement of the billet 2.
  • the transverse axis is parallel
  • the angle C may have
  • values of between 5° and 45° and the value selected is preferably 30°.
  • the second frame 7 is also mounted for pivoting on the first frame 6 about an axis Kl parallel to the axis K.
  • second frame 7 has supports 21 which are fixed in central
  • Each grinding wheel 18, 19 comprises a central hub 22
  • the ring is of the type with an interrupted edge and is thus composed of a plurality of structurally independent grinding-
  • the grinding wheel sectors 23 More particularly, the grinding wheel
  • the edge 24 comprises six identical sectors 23 each of which is defined peripherally by edge profiles 24.
  • the profiles are inclined angularly to the axis of rotation Ml, M2 of the grinding wheel, as can be seen in Figure 7.
  • the angle of inclination, indicated T, selected for the edge 24 is preferably between 10°
  • Each abrasive sector 23 is restrained on the hub 22 by means of a pair of jaws 25 clamped by screws 26 extending through the hub. It will be noted that each grinding-wheel
  • the grinding wheels 18, 19 are moved, by means of the parallelogram device operated by the jacks 10, into contact with the surface 2a of the billet 2 being ground.
  • the billet 2 is guided beneath the framework 3 along the axis B with a sliding movement relative to the grinding wheels 18, 19 which in turn are rotated about their own axes Ml and M2 by means of the
  • Figure 4 shows, in continuous outline, one of the grinding wheels 18, 19 placed in contact with a large billet 2 (for example having a cross-section of
  • Figure 9 shows schematically and on an enlarged scale, the surface 2a of the billet processed by the pair of grinding wheels 18, 19.
  • the imaginary line of the profile of the surface 2a obtained as a
  • edge profiles advantageously improves grinding penetration as well as achieving more uniform power absorption, at the same
  • the abrasive material of the billet wears more evenly, optimizing the useful life of the grinding-wheel sectors.
  • the invention thus solves the problem set, achieving the

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Forging (AREA)

Abstract

L'invention concerne une machine à rectifier des billettes (2). Cette machine comprend un bâti (3) sur lequel la billette (2) à rectifier est guidée le long d'un axe prédéterminé (B), et au moins une meule (18, 19) qui est fixée sur ledit bâti (3) et tourne autour de son propre axe (M1, M2) tout en étant en contact avec la billette (2) pour rectifier la surface (2a) de cette dernière. L'axe (M1, M2) de rotation de la meule (18, 19), au moins, est incliné de manière angulaire par rapport à un axe (K) perpendiculaire à l'axe (B) de déplacement de la billette (2).
EP99911742A 1998-03-13 1999-03-05 Machine a rectifier des produits semi-finis, en particulier, des billettes Expired - Lifetime EP1062073B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ITPD980052 ITPD980052A1 (it) 1998-03-13 1998-03-13 Macchina per la molatura di semilavorati, in particolare di billette
ITPD980052 1998-03-13
PCT/EP1999/001437 WO1999047305A1 (fr) 1998-03-13 1999-03-05 Machine a rectifier des produits semi-finis, en particulier, des billettes

Publications (2)

Publication Number Publication Date
EP1062073A1 true EP1062073A1 (fr) 2000-12-27
EP1062073B1 EP1062073B1 (fr) 2002-01-16

Family

ID=11392097

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99911742A Expired - Lifetime EP1062073B1 (fr) 1998-03-13 1999-03-05 Machine a rectifier des produits semi-finis, en particulier, des billettes

Country Status (5)

Country Link
EP (1) EP1062073B1 (fr)
AU (1) AU3031799A (fr)
DE (1) DE69900674D1 (fr)
IT (1) ITPD980052A1 (fr)
WO (1) WO1999047305A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3049056B1 (ja) 1998-07-02 2000-06-05 日本電気通信システム株式会社 移動体通信網の加入者デ―タ制御方法
JP2008119819A (ja) * 2006-10-20 2008-05-29 Jtekt Corp 凹部入り砥石の製造方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1582608A (en) * 1924-04-28 1926-04-27 Bridgeport Safety Emery Wheel Sectional grinding wheel
DE3524561A1 (de) * 1985-07-10 1987-02-05 Egon Evertz Vorrichtung zum schleifen
SE9500116L (sv) * 1995-01-16 1996-07-17 Danieli Centro Maskin Spa Förfarande vid slipning av företrädesvis ämnen och anordning för utövning av förfarandet
JPH09193024A (ja) * 1996-01-16 1997-07-29 Musashi Seimitsu Ind Co Ltd 研削砥石

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9947305A1 *

Also Published As

Publication number Publication date
AU3031799A (en) 1999-10-11
ITPD980052A1 (it) 1999-09-13
EP1062073B1 (fr) 2002-01-16
WO1999047305A1 (fr) 1999-09-23
DE69900674D1 (de) 2002-02-21

Similar Documents

Publication Publication Date Title
US2807123A (en) Grinding machines and the like
CA2054414A1 (fr) Appareil utilise pour enlever les bavures des pieces metalliques
GB2160149A (en) Rotary tool of the cutting or facing-head type
CN111230599B (zh) 一种冷轧槽钢钢材制造加工工艺
WO2003028968A1 (fr) Machine a redresser pour carreaux de ceramique calcines
DE4436148C1 (de) Verfahren und Vorrichtung zum seitlichen Planieren von Ziegelformlingen und/oder Ziegeln
RU2051019C1 (ru) Способ шлифования деревянных изделий и устройство для его осуществления
EP1062073B1 (fr) Machine a rectifier des produits semi-finis, en particulier, des billettes
HU212999B (en) Belt grinding aggregate and rail grinding machine for grinding the unevennesses of the railhead surface of one or both rails of a track
CN118003210A (zh) 一种轨道轧辊在线磨削修复机构
JPH02500259A (ja) 接線研削機
CN201049434Y (zh) 一种适用于棱面或弧面的抛光机械
CN115106880A (zh) 一种钢板加工用毛刺打磨装置
CN201124332Y (zh) 手扶摇臂悬挂式砂轮机
CN217528780U (zh) 一种矫直机自动清辊装置
US4769952A (en) Abrasive-supporting head for honing machines
JPH0618646B2 (ja) ロ−ルクロス式圧延機
KR101129949B1 (ko) 봉 형강용 절단기의 블레이드 구조체
KR100805704B1 (ko) 롤러 컨베이어의 롤러 연마장치
CN218964869U (zh) 一种自动打磨机
KR101044763B1 (ko) 롤 이동시 쵸크의 회전이 가능한 롤통 장치
CN224088738U (zh) 能够对铜合金棒材进行自动抛光的设备
CN219945549U (zh) 一种去毛刺装置
EP4063563B1 (fr) Meuleuse
CN219945684U (zh) 一种有色金属压延材的打磨装置

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

17P Request for examination filed

Effective date: 20000821

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE ES FI FR GB IT SE

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 20010426

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

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

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FI FR GB IT SE

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

Ref country code: FI

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: 20020116

REF Corresponds to:

Ref document number: 69900674

Country of ref document: DE

Date of ref document: 20020221

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

Ref country code: FR

Payment date: 20020329

Year of fee payment: 4

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

Ref country code: SE

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: 20020416

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

Effective date: 20020417

ET Fr: translation filed
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: 20020730

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
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 NON-PAYMENT OF DUE FEES

Effective date: 20030305

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

Effective date: 20030305

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

Ref country code: FR

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

Effective date: 20031127

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

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

Ref country code: IT

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

Effective date: 20050305