EP0275860A1 - Sägeblatt für das Sägen von steinartigen Materialien - Google Patents

Sägeblatt für das Sägen von steinartigen Materialien Download PDF

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Publication number
EP0275860A1
EP0275860A1 EP87870203A EP87870203A EP0275860A1 EP 0275860 A1 EP0275860 A1 EP 0275860A1 EP 87870203 A EP87870203 A EP 87870203A EP 87870203 A EP87870203 A EP 87870203A EP 0275860 A1 EP0275860 A1 EP 0275860A1
Authority
EP
European Patent Office
Prior art keywords
blade
slots
sawing
segment
longitudinal edge
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Withdrawn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
EP87870203A
Other languages
English (en)
French (fr)
Inventor
Charles Pierre Hallez
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.)
Diamant Boart NV SA
Original Assignee
Diamant Boart NV SA
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 Diamant Boart NV SA filed Critical Diamant Boart NV SA
Publication of EP0275860A1 publication Critical patent/EP0275860A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D61/00—Tools for sawing machines or sawing devices; Clamping devices for these tools
    • B23D61/12—Straight saw blades; Strap saw blades
    • B23D61/123—Details of saw blade body
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/12—Saw-blades or saw-discs specially adapted for working stone
    • B28D1/127—Straight, i.e. flat, saw blades; strap saw blades

Definitions

  • the present invention relates to an elongate armor blade with reciprocating motion for sawing stony materials, in which a longitudinal edge is provided with abrasive segments or saw teeth spaced therebetween. It is mainly used for sawing stony materials such as granites, porphyries, diorites, etc.
  • German patent application No. 3,413,970 a machine for cutting blocks of hard stony material, comprising at least one armor blade driven by an alternating rectilinear movement combined with a movement of advance in the material to be sawn and an oscillating table capable of supporting the block of stony material.
  • the table rests on mobile supports forced to follow curved trajectories contained in parallel vertical planes.
  • movable supports are either rollers which follow curved guides, or four articulated bars parallel in pairs. They allow the table to oscillate in the work surface of the saw blade.
  • the machine By superimposing a reciprocating movement parallel to the sawing base and of limited amplitude, to the tilting movement of the table, in a vertical plane, the machine achieves a line along the material to be sawn. curved cutting to ensure a limited and effective contact surface.
  • a short contact arc allows, while ensuring a high specific pressure and necessary for sawing on a limited number of diamond segments, to reduce the resulting pressure on the blade to a value such that it no longer generates any deformation or exaggerated twisting of the blade.
  • the blade does not have the same rigidity at the center and at its ends, due to its semi-recessed mounting.
  • European patent application No. 0 039 024 discloses a circular saw designed to saw hard materials.
  • the diameter is generally between 200 and 400 mm.
  • Diamond segments are mounted elastically on the teeth using elastic means, consisting either of a stirrup or of an elongated cut in the form of a circumferential segment formed in the teeth in the vicinity of their base.
  • the present invention relates to an elongated armor blade. Its purpose is to standardize, for each segment, the relative rigidity of the blade. By reducing the rigidity of the blade at the semi-recessed ends, it reduces sudden increases in pressure and hinders the vibrations and twists which are the main causes of deviations.
  • the blade according to the invention is essentially characterized in that it has, in the vicinity of the longitudinal edge provided with segments or saw teeth, elongated slots having an axis substantially parallel to this longitudinal edge, these slots having a length and a position as they correct the differences in stiffness of the blade, relative to each segment position.
  • the slots have a length at least equal to the space between two adjacent sawing segments and extends in the blade between two adjacent segments.
  • the position and the width of a slot of predetermined length determine the rigidity of the flange acting as an elastic stirrup, cut from the core of the saw weave and respectively the maximum length of the stroke carrying out the adjustment of the position of the abrasive segments.
  • the slots extend in the blade from the vicinity of one end, in contact with the blade of a segment, to the vicinity of the opposite end, in contact with the blade, d 'another segment.
  • Figures 4 to 7 are side elevational views of a different embodiment of armor blades.
  • the saw blade designated as a whole by the reference notation 1 comprises a blade proper 2 to which are fixed segments or saw teeth 3.
  • These saw teeth 3 may have the appearance of platelets and may contain as abrasive material diamond, tungsten carbide or silicon. They can be fixed to the support of the blade by welding, by soldering or by mechanical means.
  • the different blades 1 according to the invention shown in FIGS. 4 and 5 have, in the vicinity of a longitudinal edge 4, elongated slots 5 having an axis 6 substantially parallel to the longitudinal edge 4.
  • the slots 5 have a length 1 and a position in the blade 2 such that they standardize the pressure exerted during sawing on several abrasives 3 in contact with the stony material.
  • the saw teeth are distributed along the longitudinal edge 4 of the blade 2 in a substantially homogeneous manner.
  • the blade 2 is subjected to a back-and-forth movement in the direction of the arrows X and to a forward pressure in the stony material in the direction of the arrow Y.
  • the slots 5 have a length 1 decreasing as one approaches the middle of the armor blade. These slots are located in the blade 2 in the vicinity of the longitudinal edge 4 and extend from the vicinity of one end 7 in contact with the blade 2 of a saw segment 3 to the vicinity of the end adjacent 8 in contact with the blade 2, another sawing segment 3 ⁇ .
  • the blade 2 and the slots 5 have a rectangular shape.
  • This blade 2 is stretched by traction at each of its ends before sawing.
  • the slots 5 have a length 1 substantially equal to the distance separating the opposite ends of two successive sawing segments 3 and 3 ⁇ .
  • These slots 5 are located in the blade 2 in the vicinity of the longitudinal edge 4 provided with segments 3, 3 ⁇ , 3 ⁇ etc.
  • FIG. 6 represents a part of a blade 2 of a saw 1.
  • Saw segments 3, 3 ⁇ made of an abrasive material, are fixed to the blade 2 consisting, for example, of a steel sheet 1 to 4 mm thick.
  • the segments may consist of plates having a length 1 of approximately 20 mm, a height of 5 to 6 mm and a thickness of 2 to 6 mm, greater than that of the blade.
  • each of the segments 3, 3 ⁇ there is an adjacent segment located at a distance d1 substantially equal to the length 1 of the segments and another adjacent segment situated at a distance d2 substantially equal to twice the length 1 of the segments.
  • the slots 5 are located in the blade 2 in the vicinity of the longitudinal edge 4 provided with the saw segments and extend between the opposite ends 9, 10 of two adjacent saw segments which are spaced apart from each other by a distance d1 equal to the length of the segments.
  • the slots 5 can for example be located at a distance d3 of approximately 3 to 5 mm from the longitudinal edge 4 and have a width d4 of approximately 1mm.
  • the slots 5, of substantially rectangular shape, are extended at each of their ends by a cutting line 11, having a rounded shape 12 at the end 13 remote from the slot 5.
  • the width of this cutting line is substantially equal to the width d4 of the slot 5 in the vicinity thereof, and becomes progressively but quickly very small, for example equal to 0.1 mm.
  • the slots 5 and the cutting lines are made in the blade 2 by laser cutting.
  • edge 14 of the cutting line 11, adjacent to the longitudinal edge 4 in the vicinity of the slot 5 and the edge 16 of the slot 5, adjacent to the longitudinal edge 4 have tangents 17 common to their contact line 15.
  • the cutting line 11 is substantially parallel to the axis 6 of the latter and ends in a rounded 12 directed towards the edge opposite the longitudinal edge 4 provided with abrasive segments 3.
  • the position of the slot determines for a given width, the stiffness of the flange acting as a stirrup in the annular disc.
  • This stirrup must allow the abrasive segment to adjust according to the variations in the deformation of the blade in line with the segment and in particular to take up the spacings of this deformed blade. In fact, the largest clearances must be taken up at the ends of the armor blade, where the spacing can reach approximately 0.8 mm for a blade length of the order of 3.50 to 4 m.
  • the width of the slot determines the maximum length of the stroke allowing the position of the abrasive segments to be adjusted.
  • the slots 5 make it possible to standardize the pressure exerted on the abrasive segments during sawing. Indeed, when too great pressure is exerted on an abrasive segment 3 instead of being distributed homogeneously over several segments, part of this pressure is used to deform the slots 5 adjacent to this segment 3, these deformations allowing thus reducing an excess of pressure exerted on a segment and distributing the pressure more evenly over several segments.
  • the cutting line 11 located on either side of a slit, attenuates the tensions appearing on the edges of the slit towards the end 13 and the rounding 12 of the cutting line 11.
  • the saw blade according to the invention makes it possible to saw a stony material without pronounced deviation, to obtain a satin-finished cutting section and to allow a better distribution of the pressing pressure of the blade in the stony material.
  • FIG. 7 shows that the laser cuts can be carried out according to a solution called "console”.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
EP87870203A 1987-01-08 1987-12-28 Sägeblatt für das Sägen von steinartigen Materialien Withdrawn EP0275860A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE8700005 1987-01-08
BE8700005A BE1000242A4 (fr) 1987-01-08 1987-01-08 Lame d'armure pour le sciage de materiaux pierreux.

Publications (1)

Publication Number Publication Date
EP0275860A1 true EP0275860A1 (de) 1988-07-27

Family

ID=3882477

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87870203A Withdrawn EP0275860A1 (de) 1987-01-08 1987-12-28 Sägeblatt für das Sägen von steinartigen Materialien

Country Status (2)

Country Link
EP (1) EP0275860A1 (de)
BE (1) BE1000242A4 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5193280A (en) * 1991-02-25 1993-03-16 Black & Decker, Inc. Saw blades and method of making same
EP0879683A2 (de) * 1997-05-23 1998-11-25 Stalber S.r.l. Geräuscharmes Steinschneidwerkzeug und dieses Werkzeug verwendende Maschine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0039024A1 (de) * 1980-04-25 1981-11-04 BÜDIAM Diamantwerkzeuge W. u. R. Büttner GmbH Sägeblatt, insbesondere mit diamantbesetzten Schneidsegmenten
DE3229804A1 (de) * 1982-08-11 1984-02-16 Richard Felde Gmbh & Co Kg, 5630 Remscheid Saegeblatt fuer gattersaegen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0039024A1 (de) * 1980-04-25 1981-11-04 BÜDIAM Diamantwerkzeuge W. u. R. Büttner GmbH Sägeblatt, insbesondere mit diamantbesetzten Schneidsegmenten
DE3229804A1 (de) * 1982-08-11 1984-02-16 Richard Felde Gmbh & Co Kg, 5630 Remscheid Saegeblatt fuer gattersaegen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5193280A (en) * 1991-02-25 1993-03-16 Black & Decker, Inc. Saw blades and method of making same
EP0879683A2 (de) * 1997-05-23 1998-11-25 Stalber S.r.l. Geräuscharmes Steinschneidwerkzeug und dieses Werkzeug verwendende Maschine
EP0879683A3 (de) * 1997-05-23 2000-12-20 Stalber S.r.l. Geräuscharmes Steinschneidwerkzeug und dieses Werkzeug verwendende Maschine

Also Published As

Publication number Publication date
BE1000242A4 (fr) 1988-09-20

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