EP3278927A1 - Disque de coupe - Google Patents

Disque de coupe Download PDF

Info

Publication number
EP3278927A1
EP3278927A1 EP17180725.8A EP17180725A EP3278927A1 EP 3278927 A1 EP3278927 A1 EP 3278927A1 EP 17180725 A EP17180725 A EP 17180725A EP 3278927 A1 EP3278927 A1 EP 3278927A1
Authority
EP
European Patent Office
Prior art keywords
cutting disc
cutting
mixture
grain
disc
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
EP17180725.8A
Other languages
German (de)
English (en)
Other versions
EP3278927B1 (fr
Inventor
Adolf Lang
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.)
Tyrolit-Schleifmittelwerke Swarovski KG
Original Assignee
Tyrolit-Schleifmittelwerke Swarovski KG
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 Tyrolit-Schleifmittelwerke Swarovski KG filed Critical Tyrolit-Schleifmittelwerke Swarovski KG
Priority to PL17180725T priority Critical patent/PL3278927T3/pl
Priority to SI201730983T priority patent/SI3278927T1/sl
Publication of EP3278927A1 publication Critical patent/EP3278927A1/fr
Application granted granted Critical
Publication of EP3278927B1 publication Critical patent/EP3278927B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B24D5/12—Cut-off wheels
    • 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
    • B24D5/02—Wheels in one piece
    • B24D5/04—Wheels in one piece with reinforcing means
    • 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
    • B24D5/14—Zonally-graded wheels; Composite wheels comprising different abrasives

Definitions

  • the invention relates to a cutting disk, in particular for use in the metal-producing industry, having an outer edge, a central bore for connecting the cutting disk to a rotary drive for rotating the cutting disk about an axis of rotation through the central bore and a mixture of abrasive grain, at least one binder and optionally fillers wherein the mixture extends from the outer edge of the cutting disc to the central bore, and wherein the cutting disc has a diameter of 1000 mm to 2000 mm and a mean disc thickness.
  • the invention further relates to a method for producing such a cutting disk.
  • Such cutting discs are already known from the prior art and are used for example in the EP 1 332 834 A1 described. They are used, for example, in the steel industry for cutting slabs.
  • the ratio of diameter to average, that is average slice thickness is approximately 100: 1. This means that it is relatively thick cutting discs, which have a high waste, a large heat input into the workpiece to be machined, a high raw material cost and a high weight of the cutting disc result.
  • the rotary drive of the cutting discs at the same time requires a high engine power.
  • a thick cutting disc also means a high wear of the rotary drive and a large amount of waste after the consumption of the cutting disc.
  • the objective technical task of the present invention is therefore to provide a cutting disk in which the disadvantages described are avoided or significantly reduced.
  • Another object is to provide a suitable method for producing such a cutting disk.
  • the cutting disc has a ratio of diameter to average thickness of at least 150: 1, preferably from 150: 1 to 250: 1.
  • a ratio of diameter to average disk thickness allows a significant reduction of the average disk thickness with a constant diameter compared to the prior art. This results in less wastage, lower engine power, less machine wear, less heat input into the workpiece, lower blade weight, lower raw material costs, and a reduction in waste after consumable disc usage.
  • mixture of abrasive grain does not necessarily mean that it must be a single type of abrasive grain. Rather, several types of abrasive grain may also be included in the mixture, with the abrasive grain types having chemical and / or physical properties can distinguish. It can also be provided that a first Schleifkornart present in the region of the central bore in the mixture and a second type of abrasive grain in the remaining part of the cutting disc.
  • the cutting discs according to the invention may be provided to increase the lateral stability that the cutting disc is laterally provided in the region of the central bore with stabilizing elements, preferably steel sheets.
  • the cutting disc has a first side surface and an opposite second side surface, the axis of rotation of the cutting disc is aligned substantially normal to the two side surfaces, the abrasive grain has a grain size, and Abrasive grain on the side surfaces has a supernatant of less than half, preferably less than one third, the grain size.
  • the cutting disc has a first side surface and an opposite second side surface, the axis of rotation of the cutting disc is aligned substantially normal to the two side surfaces, and at least partially a fine grain layer is arranged on the two side surfaces.
  • tissue layers in the cutting disc there is another measure to increase the lateral stability is to incorporate tissue layers in the cutting disc, a person skilled in the art has been assumed that three to four layers of fabric are necessary, whereas in the cutting disc according to the invention already one or two layers of fabric, preferably made of glass fibers, can cause a significant increase in the lateral stabilization.
  • protection is also desired for a process for producing a cutting disk, wherein it is provided according to the invention that the mixture of abrasive grain, at least one binder and optionally fillers applied to a first press plate, covered with a second press plate and by applying pressure to the is compressed two pressing plates.
  • the press plates it is possible to produce very smooth side surfaces with the advantages described above.
  • the in the FIG. 1 1 has an outer edge 2 and a central bore 3 for connecting the cutting disc 1 to a rotary drive for rotating the cutting disk 1 about a through the central bore 3 extending axis of rotation 4 (see also in the FIG. 2 illustrated cross-sectional view along the cross-sectional plane 24).
  • clamping flanges 23 may be provided, which are not integral part of the blade 1.
  • the cutting wheel 1 further comprises a mixture of abrasive grain 5, at least one binder 6 and optionally abrasive fillers, wherein the mixture from the outer edge 2 of the blade 1 extends to the central bore 3.
  • the cutting disk 1 finally has a diameter 7 of 1000 mm to 2000 mm and a mean disk thickness 8.
  • the term "average disk thickness” is averaged over the radius, average To understand disc thickness. Namely, it can be provided that the cutting disk 1 runs conically from the central bore 3 to the outer edge 2, that is to say that the thickness of the disk increases from the central bore 3 in the radial direction 18 to the outer edge 2.
  • the disk thickness in the region of the central bore 3 with the reference numeral 20 the disk thickness at the outer edge 2 by the reference numeral 21 and the average disk thickness by the reference numeral 8.
  • FIG. 2 also denotes a first side surface 11 and an opposite second side surface 12, wherein the axis of rotation 4 of the cutting disk 1 is aligned substantially normal to the two side surfaces 11 and 12.
  • a cutting disc 1 according to the prior art is shown, wherein this cutting disc 1 has an inner disc thickness 20 of 11 mm, an outer disc thickness 21 of 13 mm and an average disc thickness of 12 mm. At a diameter 7 of 1250 mm results in this cutting disc 1 according to the prior art, a ratio of diameter 7 to average thickness 8 of about 100: 1.
  • the cutting disc 1 according to the prior art is composed of four layers 25, which are separated by three layers of tissue 22 from each other.
  • FIG. 3 is also an area of the blade 1 is shown enlarged. Schematically indicated is the mixture of abrasive grain 5 and a binder 6.
  • the projection 13 of the abrasive grain 5 on the side surfaces 11 and 12 is equal to or greater than half the average grain size 10 of the abrasive grain 5.
  • the side surfaces 11 and 12 have a relatively high roughness on.
  • the cutting wheel 1 an inner disk thickness 20 of the 7th mm, an outer disk thickness 21 of 9 mm, an average disk thickness 8 of 8 mm and a diameter 7 of 1250 mm.
  • the inner pane thickness 20 is 7 mm, the outer pane thickness 21 9 mm, the average pane thickness 8 8 mm and the diameter 7 2000 mm, resulting in an overall ratio of diameter 7 to average disk thickness 8 of 250: 1.
  • any intermediate relationship can be realized by an appropriate vote of the diameter and the average thickness of the disc.
  • the cutting disk 1 has a reduced projection 13 of less than half, preferably less than one third of the mean grain size 10, in comparison with the prior art. This results in very smooth side surfaces 11 and 12th
  • the blade 1 according to the in the FIG. 4 illustrated embodiment has only two layers of fabric 22, which divide the blade 1 in three layers 25.
  • each have a fine grain layer 14 is arranged with a thickness 15 of 5% of the average thickness of the disc 8 1.
  • the fine grain layer 14 has abrasive grain 5 with a grain size 10 or larger equal to 24 mesh, preferably with a grain size of 10 from 24 mesh to 46 mesh.
  • the remainder of the abrasive grain 5 has a grain size 10 of 15 to 20 mesh, preferably a 50/50 blend of 10 grain size of 16 mesh and 20 mesh.
  • FIG. 6 illustrated embodiment of the invention differs from that in the FIG. 5 illustrated embodiment mainly in that in the region of the central bore 3 on the side surfaces 11 and 12 of the cutting disc 1 steel sheets 9 are incorporated. These cause an increased lateral stability. In this case, the fine grain layer 14 thus extends from the steel sheets 9 to the outer edge 2.
  • the cutting disc 1 on the two side surfaces 11 and 12 an annular edge portion 16 with an increased roughness.
  • the fine grain layers 14 extend in this case only from the central bore 3 to this annular edge portion 16.
  • FIG. 8 illustrated embodiment differs from that in the FIG. 7 illustrated embodiment in that in addition two steel sheets 9 are arranged in the region of the central bore 3 on the side surfaces 11 and 12.
  • the fine grain layer 14 extends in this case in a center region 17 spaced from the central bore 3 and the outer edge 2.
  • the cutting disk 1 corundum and / or silicon carbide as abrasive grain 5 and / or synthetic resin as a binder 6 have.
  • FIG. 9 shows a flowchart illustrating a preferred embodiment of the method 19 according to the invention for producing a cutting wheel 1:
  • a first press plate is provided.
  • a fine grain layer 14 and / or at least one stabilizing element 9 in the form of a steel sheet is applied at least in some areas.
  • This optional method step is provided with the reference numeral 27.
  • a mixture of abrasive grain 5, at least one binder 6 and optionally fillers is applied. This process step is provided with the reference numeral 28.
  • the method step 29 is again optional and consists in that, depending on the embodiment to be produced, a fine grain layer 14 and / or at least one stabilizing element 9 in the form of a steel sheet is applied to the mixture at least in regions.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
EP17180725.8A 2016-08-04 2017-07-11 Disque de coupe Active EP3278927B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL17180725T PL3278927T3 (pl) 2016-08-04 2017-07-11 Tarcza tnąca
SI201730983T SI3278927T1 (sl) 2016-08-04 2017-07-11 Rezalni disk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ATA50717/2016A AT518913B1 (de) 2016-08-04 2016-08-04 Trennscheibe

Publications (2)

Publication Number Publication Date
EP3278927A1 true EP3278927A1 (fr) 2018-02-07
EP3278927B1 EP3278927B1 (fr) 2021-09-01

Family

ID=59381059

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17180725.8A Active EP3278927B1 (fr) 2016-08-04 2017-07-11 Disque de coupe

Country Status (5)

Country Link
EP (1) EP3278927B1 (fr)
AT (1) AT518913B1 (fr)
ES (1) ES2899358T3 (fr)
PL (1) PL3278927T3 (fr)
SI (1) SI3278927T1 (fr)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2078354A (en) * 1935-04-25 1937-04-27 Norton Co Abrasive article
US2690632A (en) * 1953-09-25 1954-10-05 Allison Company Abrasive cutting wheel
US3526999A (en) * 1968-08-08 1970-09-08 Leopold Jagers Cutting blades
US3838543A (en) * 1970-05-25 1974-10-01 Norton Co High speed cut-off wheel
JPS63147264U (fr) * 1987-03-17 1988-09-28
EP1332834A1 (fr) * 2002-01-24 2003-08-06 Tyrolit Schleifmittelwerke Swarovski KG Meule de tronçonnage avec tôles latérales d'acier
EP1611998A1 (fr) * 2004-07-03 2006-01-04 August Rüggeberg GmbH & Co. KG Roue de découpage pour application stationaire
JP2006082187A (ja) * 2004-09-16 2006-03-30 Mitsubishi Materials Corp 薄刃砥石
WO2007087820A1 (fr) * 2006-01-24 2007-08-09 Dronco Ag disque de meulage et/ou de découpe, dispositif de fabrication d'un disque de meulage et/ou de découpe et procede de fabrication d'un disque de meulage et/ou de découpe
WO2013184873A1 (fr) * 2012-06-06 2013-12-12 Saint-Gobain Abrasives, Inc. Outil de coupe de petit diamètre

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2814918A (en) * 1956-06-07 1957-12-03 Norton Co Cut-off wheel

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2078354A (en) * 1935-04-25 1937-04-27 Norton Co Abrasive article
US2690632A (en) * 1953-09-25 1954-10-05 Allison Company Abrasive cutting wheel
US3526999A (en) * 1968-08-08 1970-09-08 Leopold Jagers Cutting blades
US3838543A (en) * 1970-05-25 1974-10-01 Norton Co High speed cut-off wheel
JPS63147264U (fr) * 1987-03-17 1988-09-28
EP1332834A1 (fr) * 2002-01-24 2003-08-06 Tyrolit Schleifmittelwerke Swarovski KG Meule de tronçonnage avec tôles latérales d'acier
EP1611998A1 (fr) * 2004-07-03 2006-01-04 August Rüggeberg GmbH & Co. KG Roue de découpage pour application stationaire
JP2006082187A (ja) * 2004-09-16 2006-03-30 Mitsubishi Materials Corp 薄刃砥石
WO2007087820A1 (fr) * 2006-01-24 2007-08-09 Dronco Ag disque de meulage et/ou de découpe, dispositif de fabrication d'un disque de meulage et/ou de découpe et procede de fabrication d'un disque de meulage et/ou de découpe
WO2013184873A1 (fr) * 2012-06-06 2013-12-12 Saint-Gobain Abrasives, Inc. Outil de coupe de petit diamètre

Also Published As

Publication number Publication date
ES2899358T3 (es) 2022-03-11
EP3278927B1 (fr) 2021-09-01
AT518913A1 (de) 2018-02-15
SI3278927T1 (sl) 2022-01-31
PL3278927T3 (pl) 2022-01-17
AT518913B1 (de) 2019-04-15

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