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EP0210654A2 - Ponceuse à bande - Google Patents

Ponceuse à bande Download PDF

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Publication number
EP0210654A2
EP0210654A2 EP86110529A EP86110529A EP0210654A2 EP 0210654 A2 EP0210654 A2 EP 0210654A2 EP 86110529 A EP86110529 A EP 86110529A EP 86110529 A EP86110529 A EP 86110529A EP 0210654 A2 EP0210654 A2 EP 0210654A2
Authority
EP
European Patent Office
Prior art keywords
pressure
grinding
workpiece
belt
bolt
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
EP86110529A
Other languages
German (de)
English (en)
Other versions
EP0210654A3 (en
EP0210654B1 (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 AT86110529T priority Critical patent/ATE62169T1/de
Publication of EP0210654A2 publication Critical patent/EP0210654A2/fr
Publication of EP0210654A3 publication Critical patent/EP0210654A3/de
Application granted granted Critical
Publication of EP0210654B1 publication Critical patent/EP0210654B1/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
    • B24B21/06—Machines or devices using grinding or polishing belts; Accessories therefor for grinding plane surfaces involving members with limited contact area pressing the belt against the work, e.g. shoes sweeping across the whole area to be ground
    • B24B21/08—Pressure shoes; Pressure members, e.g. backing belts

Definitions

  • the invention relates to a grinding machine according to the preamble of claim 1.
  • the invention is concerned with the problem of grinding burrs formed on cutting lines of sheet metal. It can be both burrs that arise, for example, when punching sheet metal, and melting burrs, such as those that build up along the cutting lines, for example, when plasma cutting sheet metal from molten material. Grinding machines with a large grinding roller have hitherto been used for deburring these sheets. The difficulty arises that the edges or burrs are often not the same at all points on the workpiece and / or that the workpieces are distorted and do not lie completely flat on the workpiece support. There is also the danger that thin workpieces of high strength will still warp due to the frictional or cutting heat generated during the grinding process.
  • the pressure beam consists essentially of a block with holes in which piston-like shafts of the pressure members are slidably guided and at their upper ends are connected to a common pressure chamber so that the shafts of the pressure members can be acted upon together with a pressure medium.
  • the pistons each have through slots which are penetrated by pins fixed in the block in order to prevent the pistons from falling out of the bores.
  • a roller At the free ends of the shafts protruding from the block there is a roller in each case which is intended to rest against the back of the band. In this way, the friction between the pressure members and the belt should be largely eliminated.
  • the pressure members comprise a shaft which is displaceably mounted in a carrier and which carries a bearing fork for a pressure roller at its free end protruding from the carrier.
  • the shafts are not biased by a pressure medium, but by a spring in the direction of the grinding belt.
  • the pressure members of successive rows are offset from one another in such a way that - viewed in the direction of advance of the workpiece - there is an almost complete coverage of the grinding belt width.
  • the invention has for its object to provide a belt grinder of the type described in the preamble of claim 1, which enables the complete grinding of local elevations even on metallic workpieces in a continuous process even if these workpieces are not completely flat.
  • the pressure members do not have any rollers or pressure shoes intended for abutment on the grinding belt, but instead consist of simple bolts.
  • This enables a very dense spatial arrangement of the bolt-shaped pressure members, since bulky bearing forks for the rollers and these roles themselves can be eliminated.
  • the entire bolt diameter area is available as a pressure surface for pressing the grinding belt onto the workpiece. On the one hand, this results in a fine subdivision of the effective pressure surface of the pressure beam and, on the other hand, sufficient forces can be transmitted via the flat ends of the bolt-shaped pressure members in order to be able to machine elevations on metallic workpieces.
  • the pressure beam is set to a height at which the grinding belt is held at a height below the workpiece surface by the sum of the pressure elements. If the workpiece is now pushed into the belt grinder, it pushes the pressure elements upwards against the elastic preload force, while outside the outer edges of the workpiece the pressure elements remain in their lower position or can be immersed in recesses lying inside the workpiece edges.
  • the burrs standing on the workpiece edges are preferably ground off first. Under certain circumstances, the surfaces of the workpiece lying between the burrs are also ground, but these surfaces are ground essentially uniformly even in the case of warped workpieces, since the individually adjustable bolts of the pressure beam follow the surface relief of the workpiece.
  • the carrier is formed by a box-shaped hollow body, in the wall of which faces the workpiece support, the bores for the bolts are formed and in which there is a hose which can be pressurized with a pressure medium and which bears against the bolt ends projecting into the hollow bodies.
  • the box-shaped hollow body is divided into a plurality of chambers, each of which comprises a certain number of bolt gaps and in each of which a hose which can be pressurized separately is arranged, and that each chamber is assigned a touch and control device , which scans the workpiece contour and controls the pressure in the associated hose in the sense of a pressure relief for the workpiece areas not to be ground.
  • the hoses of all the chambers are pressurized, so that the grinding belt is basically biased into its grinding position.
  • FIG. 1 shows a workpiece support table 10 and a grinding unit 12 arranged above the same.
  • This comprises an endless rotating grinding belt 14, which has two deflection rollers 16 on both sides of the workpiece support table 10 and one Drive roller, not shown, is guided.
  • a pressure beam 20 is used to press the grinding belt 14 against a workpiece 18 that is moved through the belt grinding machine on the workpiece support table 10, which is held on the frame of the belt grinding machine in a manner not shown, and for example by means of a piston-cylinder arrangement 22 in the direction of the double arrow A perpendicular to the surface of the workpiece support table 10 is adjustable.
  • the pressure beam 20 consists essentially of a box profile 24, the lower wall 26 facing the workpiece support table 10 is provided with a plurality of bores 28 arranged in a matrix in rows and columns, in each of which a bolt 30 is freely displaceable.
  • the bolts 30 each have a head 32 which prevents them from falling out of the bores 28. With their free ends they lie directly on the back of the grinding belt 12.
  • the bolt ends can optionally be provided with a low-wear coating. As a rule, however, such a relatively expensive solution will be dispensed with, since it can be cheaper to replace the worn bolts with new bolts.
  • a pressure hose 34 filled with compressed air which clamps the bolts 30 with their bolt heads 32 against the lower wall 26 of the box section 24.
  • the pressure hose 34 can be connected to a suitable compressed air source 40 via a connecting piece 36 and a valve 38.
  • the compressed air source can be constructed so that it is possible to keep the pressure within the pressure hose 34 constant or to vary it according to the desired grinding pressure.
  • the pressure beam 20 is adjusted relative to the workpiece support table 10 so that the distance of the grinding belt 14 from the table surface is less than the thickness of the material to be processed. If the workpiece 18 is now pushed into the grinding machine in the direction of arrow A, it raises the bolts 30. At the workpiece edges, however, the bolts 30 remain in their lower position and pull the grinding belt 14 downward over the workpiece edge in the direction of the workpiece support table 10. This applies both to the area of the outer edges of the workpiece 18 and to contours cut out as desired within the same. Where the bolts 30 press the sanding belt 14 against the workpiece surface, i.e. Material is removed, particularly in the area of the burrs, so that the burrs of the workpiece are ground off after the workpiece has passed through the belt grinding machine.
  • the bolts 30 are arranged in rows of bolts successively in the direction of travel A according to FIG. 2.
  • the bolts 30 in successive bolt rows are only offset by a fraction of the bolt diameter in the row longitudinal direction.
  • the offset dimension a of two bolts successive in the direction of travel A and the number of bolt rows can be determined such that - viewed across the width of the pressure beam 20 - can achieve at least approximately the same engagement time of the bolt with the workpiece at any point.
  • the cavity of the box section 24 ' is subdivided into a plurality of chambers 42, which in the present exemplary embodiment each comprise two columns of bolts 30 and are separated from one another by partition walls 44.
  • Each chamber 42 has its own pressure hose 46 which can be vented or filled with compressed air via a valve 48.
  • known sensing elements 50 are arranged in the direction of travel A in front of the pressure beam 20, which scan an incoming workpiece and deliver corresponding tactile signals to a control device 52. This in turn controls the valves 48 of the individual chambers 42 in such a way that the hoses 46 are ventilated when they pass under the corresponding chambers 42 the workpiece areas should not be ground.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
EP86110529A 1985-07-30 1986-07-30 Ponceuse à bande Expired - Lifetime EP0210654B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86110529T ATE62169T1 (de) 1985-07-30 1986-07-30 Bandschleifmaschine.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853527265 DE3527265A1 (de) 1985-07-30 1985-07-30 Bandschleifmaschine
DE3527265 1985-07-30

Publications (3)

Publication Number Publication Date
EP0210654A2 true EP0210654A2 (fr) 1987-02-04
EP0210654A3 EP0210654A3 (en) 1987-12-02
EP0210654B1 EP0210654B1 (fr) 1991-04-03

Family

ID=6277168

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86110529A Expired - Lifetime EP0210654B1 (fr) 1985-07-30 1986-07-30 Ponceuse à bande

Country Status (3)

Country Link
EP (1) EP0210654B1 (fr)
AT (1) ATE62169T1 (fr)
DE (2) DE3527265A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0389914A1 (fr) * 1989-03-31 1990-10-03 Georg Weber Poutre d'application de pression pour une ponceuse
EP0571343A1 (fr) * 1992-05-21 1993-11-24 Dmc S.P.A. Ponceuse pour panneaux de bois
EP3290154A3 (fr) * 2016-09-06 2018-07-25 Steinemann Technology AG Procédé de surveillance d'un processus de meulage
CN112676992A (zh) * 2020-12-30 2021-04-20 青岛建诚伟业机械制造有限公司 一种升降式电磁压梁系统

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202005014430U1 (de) † 2005-09-12 2005-11-24 Lissmac Maschinenbau Und Diamantwerkzeuge Gmbh Vorrichtung zum Bearbeiten eines Werkstücks

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE951766C (de) * 1954-12-16 1956-10-31 Boettcher & Gessner Bandschleifmaschine fuer die Holzbearbeitung
US2803927A (en) * 1956-11-15 1957-08-27 John A Nylund Sanding and polishing machines
FR2107006A5 (fr) * 1970-09-29 1972-05-05 Zeitlin Leo
FR2454873A1 (fr) * 1979-04-25 1980-11-21 Jonasson Bertil Machine d'abrasion a courroies

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US637121A (en) * 1899-04-03 1899-11-14 Albert Huseby Polishing-machine.
US2618913A (en) * 1950-02-23 1952-11-25 George H Plancon Abrading machine shoe construction
DE8024973U1 (de) * 1980-09-18 1981-03-26 Widu-Maschinenfabrik W. Duttine oHG, 74906 Bad Rappenau Schleifschuh

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE951766C (de) * 1954-12-16 1956-10-31 Boettcher & Gessner Bandschleifmaschine fuer die Holzbearbeitung
US2803927A (en) * 1956-11-15 1957-08-27 John A Nylund Sanding and polishing machines
FR2107006A5 (fr) * 1970-09-29 1972-05-05 Zeitlin Leo
FR2454873A1 (fr) * 1979-04-25 1980-11-21 Jonasson Bertil Machine d'abrasion a courroies

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0389914A1 (fr) * 1989-03-31 1990-10-03 Georg Weber Poutre d'application de pression pour une ponceuse
EP0571343A1 (fr) * 1992-05-21 1993-11-24 Dmc S.P.A. Ponceuse pour panneaux de bois
EP3290154A3 (fr) * 2016-09-06 2018-07-25 Steinemann Technology AG Procédé de surveillance d'un processus de meulage
CN112676992A (zh) * 2020-12-30 2021-04-20 青岛建诚伟业机械制造有限公司 一种升降式电磁压梁系统

Also Published As

Publication number Publication date
ATE62169T1 (de) 1991-04-15
DE3678503D1 (de) 1991-05-08
EP0210654A3 (en) 1987-12-02
DE3527265A1 (de) 1987-02-12
EP0210654B1 (fr) 1991-04-03

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