EP0293574B1 - Machine à meuler à bande - Google Patents

Machine à meuler à bande Download PDF

Info

Publication number
EP0293574B1
EP0293574B1 EP88105417A EP88105417A EP0293574B1 EP 0293574 B1 EP0293574 B1 EP 0293574B1 EP 88105417 A EP88105417 A EP 88105417A EP 88105417 A EP88105417 A EP 88105417A EP 0293574 B1 EP0293574 B1 EP 0293574B1
Authority
EP
European Patent Office
Prior art keywords
grinding
belt
feed direction
conveying path
workpiece
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
EP88105417A
Other languages
German (de)
English (en)
Other versions
EP0293574A3 (en
EP0293574A2 (fr
Inventor
Georg Weber
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
Priority to AT88105417T priority Critical patent/ATE67954T1/de
Publication of EP0293574A2 publication Critical patent/EP0293574A2/fr
Publication of EP0293574A3 publication Critical patent/EP0293574A3/de
Application granted granted Critical
Publication of EP0293574B1 publication Critical patent/EP0293574B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
    • B24B21/04—Machines or devices using grinding or polishing belts; Accessories therefor for grinding plane surfaces

Definitions

  • the innovation relates to a belt grinding machine for grinding flat workpieces on their underside in a continuous process, comprising a transport path with a plurality of lower and upper rollers which form a transport gap for the workpiece between them and at least some of which can be driven, and two below the transport path Grinding units arranged one behind the other in the feed direction, each with a grinding belt that can be pressed onto the underside of a workpiece running through the transport path.
  • Certain processing operations on flat plate-shaped objects mean that these objects have to be ground on their underside after the processing operation and before their further use. For example, during stamping and plasma cutting of sheet metal, burrs are created along the cutting lines, which have to be ground down before further processing of the sheet metal. When leaving the processing machine flat workpieces are to pass through a grinding machine immediately thereafter, this presupposes that the workpieces can be held, transported and supported during the grinding process. For this, a minimum length of the workpiece - measured in the direction of transport - is required in order to be able to grasp the workpiece in front of or behind the grinding point and thus be able to transport it.
  • the innovation is based on the object of specifying a grinding machine of the type mentioned at the beginning, with which workpieces can also be ground on their underside which have a very short length in the direction of transport.
  • this object is achieved in that the grinding units are offset from one another transversely to the feed direction in such a way that their grinding tracks - measured from the two side edges of the transport track - each extend over approximately half the width thereof, and - viewed in the feed direction - in addition to the respective grinding unit, at least one lower roller cooperating with an upper roller is arranged.
  • first half of the workpiece is ground, the workpiece being held and transported during this grinding process by the upper roller lying next to the grinding unit and interacting with it.
  • This makes it possible to grind workpieces whose dimensions in the direction of transport can be less than the length of the grinding zone measured in the same direction.
  • the dimension of the workpiece only has to be so large that the workpiece is practically always gripped by two pairs of rollers which follow one another in the transport direction and thereby maintains its flat position. The same process is then repeated for the other half of the workpiece.
  • the upper roller which interacts with the lower roller lying next to the grinding unit, extends over the entire width of the transport path.
  • the upper rollers of the transport path are mounted so as to be adjustable in height.
  • the rollers can be mounted together on a height-adjustable frame.
  • a pair of upper and lower rollers is provided in front of, behind and between the grinding units, each extending over the entire width of the transport path.
  • the belt grinding machine shown schematically in FIGS. 1 and 2 comprises a frame or housing, generally designated 10, which has a workpiece inlet opening 12 and a workpiece outlet opening 14, which are connected to one another by a transport path for the workpiece, generally designated 16.
  • Each of the sanding units comprises an endless sanding belt 22 which runs over an upper deflection roller 24, a lower deflection roller 26 and a contact roller 28, the horizontal axes of which are each directed perpendicular to the feed direction A.
  • the contact roller 28 is driven by an electric motor 30, the drive wheel 32 of which drives an intermediate wheel 36 via a first belt drive 34, which in turn drives the contact roller 28 via a second belt drive 38.
  • the upper deflection roller 24 and the contact roller 28 are arranged so that the abrasive belt section 40 running between them lies in a horizontal plane.
  • the width of the grinding belt 18 and the axial length of the rollers 24, 26 and the contact roller 28 can be chosen so that the grinding paths of the two grinding units, starting from the lateral edges of the transport path 16, overlap slightly in the middle.
  • the transport path 16 comprises - viewed in the direction of travel A - in front of, between and behind the grinding units 18 and 20 in each case a roller 42 which extends over the entire width of the transport path 16 and whose axes are directed parallel to the axes of the deflecting rollers 24, 26 and the contact rollers 28 are. Axially next to the two grinding units 18 and 20 there is also a lower roller 44, which extends only approximately over half the width of the transport path 16. The bearings of the lower rollers 42 and 44 are not shown in the figures for the sake of clarity.
  • Each of the lower rollers 42, 44 is assigned an upper roller 46 which extends over the entire width of the transport path 16 and which, with the respective lower roller 42 or 44, has a nip for conveying a flat workpiece forms.
  • the upper rollers 46 are mounted together on a frame 48 which in turn is mounted on the frame 10 in an adjustable manner. The height adjustment takes place with the aid of threaded spindles 50 which engage in corresponding threaded bores on the frame 48 and which are each connected via a gear 52 to a shaft 54 which in turn is driven by an electric motor 56 when the height of the frame 48 is adjusted should.
  • the upper rollers 46 are driven by an electric motor 58, which drives a first upper roller 46 via a belt or chain drive 60, from which the further upper rollers 46 are then driven via further belt or chain drives 60.
  • a drive of the lower rollers 42 is not absolutely necessary, but can also be provided.
  • a workpiece entering the belt grinding machine through the inlet opening 12 is first only ground on one half by the grinding unit 18, the grinding belt being able to be pressed against the underside of the workpiece by a pressure bar 62 which, for example, can be designed in this way can, as described in EP-A2-0 210 654.
  • the workpiece is held and transported by the roller 44 lying next to the grinding unit 18 and the upper roller 46 assigned to it.
  • the second half of the workpiece is then ground by the grinding unit 20, the workpiece now being held and transported on the other side by the lower roller 44 lying next to the grinding unit 20 and the upper roller 46 assigned to it.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Claims (6)

  1. Machine à bande abrasive pour le meulage en continu de pièces plates, sur leur face inférieure, comportant une ligne de transport (16) avec plusieurs rouleaux inférieurs et supérieurs (42, 44; 46), qui forment entre eux une fente de transport pour la pièce, et dont une partie au moins peut être entraînée, ainsi que deux groupes de meulage (18, 20), disposés l'un derrière l'autre dans le sens d'avance (A), au-dessous de la ligne de transport (16), et respectivement munis d'une bande abrasive (22), qui peut être pressée contre la face inférieure d'une pièce, passant par la ligne de transport (16), caractérisée en ce que les groupes de meulage (18, 20) sont disposés en déport mutuel, à la transversale du sens d'avance (A), de telle sorte que leurs lignes de meulage, mesuré à partir des deux bords latéraux de la ligne de transport (16), s'étendent respectivement sur la demi-largeur environ de cette dernière, et en ce que, vu dans le sens d'avance (A), un rouleau inférieur (44) au moins, qui concourt avec un rouleau supérieur (46), est disposé à côté du groupe de meulage respectif (18, 20).
  2. Machine à bande abrasive suivant la revendication 1, caractérisée en ce que le rouleau supérieur (46), qui concourt avec le rouleau inférieur (44), situé à côté du groupe de meulage (18, 20), s'étend sur toute la largeur de la ligne de transport (16).
  3. Machine à bande abrasive suivant l'une des revendications 1 et 2, caractérisée en ce que les lignes de meulage des deux groupes (18, 20) se chevauchent légèrement à la transversale du sens d'avance.
  4. Machine à bande abrasive suivant l'une quelconque des revendications 1 à 3, caractérisée en ce que les rouleaux supérieurs (46) de la ligne de transport (16) sont montés avec une possibilité de réglage en hauteur.
  5. Machine à bande abrasive suivant la renvendication 4, caractérisée en ce que les rouleaux supérieurs (46) sont montés conjointement sur un châssis (48), réglable en hauteur.
  6. Machine à bande abrasive suivant l'une quelconque des revendications 1 à 5, caractérisée en ce que, vu dans le sens d'avance (A), une paire de rouleaux inférieurs et supérieurs (42, 46), qui s'étendent sur toute la largeur de la ligne de transport (16), est respectivement disposée devant, derrière, et entre les groupes de meulage (18, 20).
EP88105417A 1987-06-04 1988-04-05 Machine à meuler à bande Expired - Lifetime EP0293574B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88105417T ATE67954T1 (de) 1987-06-04 1988-04-05 Bandschleifmaschine.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8707974U DE8707974U1 (de) 1987-06-04 1987-06-04 Bandschleifmaschine
DE8707974U 1987-06-04

Publications (3)

Publication Number Publication Date
EP0293574A2 EP0293574A2 (fr) 1988-12-07
EP0293574A3 EP0293574A3 (en) 1989-02-22
EP0293574B1 true EP0293574B1 (fr) 1991-10-02

Family

ID=6808830

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88105417A Expired - Lifetime EP0293574B1 (fr) 1987-06-04 1988-04-05 Machine à meuler à bande

Country Status (3)

Country Link
EP (1) EP0293574B1 (fr)
AT (1) ATE67954T1 (fr)
DE (2) DE8707974U1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8903949U1 (de) * 1989-03-31 1990-08-02 Weber, Georg, 8640 Kronach Bandschleifmaschine
DE19621690A1 (de) * 1996-05-30 1997-12-04 Jun Alexander Faller Planziegel-Bandschleifmaschine
DE29609533U1 (de) * 1996-05-30 1996-12-12 Faller jun., Alexander, Dipl.-Wirtsch.-Ing. (FH), 84061 Ergoldsbach Planziegel-Bandschleifmaschine
DE19915909C2 (de) * 1998-12-11 2003-05-28 Steinemann Technology Ag St Ga Verfahren zur Steuerung des Schleifprozesses sowie Rechnersteuerung für Breitschleifmaschine
CN107052956B (zh) * 2017-01-23 2023-02-28 张必葵 一种弧形锁面双面抛光机
CN112296821A (zh) * 2020-10-23 2021-02-02 李丹丹 一种砂带式塑胶制品表面加工用拉丝处理装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2338644A (en) * 1940-12-30 1944-01-04 Leota T Pallas Plate polishing machine
DE1577495A1 (de) * 1966-06-07 1970-01-08 Tidland Machine Company Bandschleifmaschine und Verfahren zum Betrieb derselben
US3991522A (en) * 1975-05-05 1976-11-16 Aladdin Manufacturing Company Apparatus for sharpening rotary blades
DE3316154C2 (de) * 1983-05-03 1986-06-19 Bison-Werke Bähre & Greten GmbH & Co KG, 3257 Springe Bandschleifmaschine

Also Published As

Publication number Publication date
DE8707974U1 (de) 1987-08-13
EP0293574A3 (en) 1989-02-22
ATE67954T1 (de) 1991-10-15
DE3865241D1 (de) 1991-11-07
EP0293574A2 (fr) 1988-12-07

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