EP0069106B1 - Maschine zum Sägen von Steinblöcken - Google Patents

Maschine zum Sägen von Steinblöcken Download PDF

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Publication number
EP0069106B1
EP0069106B1 EP82870034A EP82870034A EP0069106B1 EP 0069106 B1 EP0069106 B1 EP 0069106B1 EP 82870034 A EP82870034 A EP 82870034A EP 82870034 A EP82870034 A EP 82870034A EP 0069106 B1 EP0069106 B1 EP 0069106B1
Authority
EP
European Patent Office
Prior art keywords
saw blades
frame
blades
machine according
saw
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
Application number
EP82870034A
Other languages
English (en)
French (fr)
Other versions
EP0069106A1 (de
Inventor
Gilles Lauga
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.)
Saint Gobain Abrasives Inc
Original Assignee
Norton Co
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 Norton Co filed Critical Norton Co
Priority to AT82870034T priority Critical patent/ATE10347T1/de
Publication of EP0069106A1 publication Critical patent/EP0069106A1/de
Application granted granted Critical
Publication of EP0069106B1 publication Critical patent/EP0069106B1/de
Expired legal-status Critical Current

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Classifications

    • 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
    • B28D1/06—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with reciprocating saw-blades
    • B28D1/066—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with reciprocating saw-blades the workpieces being moved in a horizontal plane, e.g. with vertically or oblique movable saw-blades

Definitions

  • the invention relates to a machine for sawing particularly hard blocks of stone comprising two parallel saw blades stretched on either side of a chassis driven by a substantially vertical oscillating movement.
  • a sawing machine comprising one or more saw blades driven by a rectilinear or oscillating reciprocating movement.
  • the saw blades used are either steel blades sprinkled with water carrying an abrasive such as sand, steel shot, or grains of silicon carbide, or blades with diamond segments.
  • Some of these machines have only one blade driven by an oscillating movement with a horizontal axis, with horizontal advance of the block to be sawed.
  • the saw blade is tensioned in a frame to prevent it from being deflected during sawing. It is advantageous to place the saw blade laterally, so as not to limit the width of the block to be sawed.
  • Machines comprising several saw blades are also known.
  • a machine of this type corresponding to the preamble of claim 1 is described in Belgian patent BE-A-723,034.
  • the various saw blades are stretched parallel in a frame and the latter is driven in an oscillating movement with horizontal axis, with horizontal advance of the block to be sawed.
  • the distance between the blades is chosen so as to saw slices of desired thickness.
  • the obvious advantage of this type of machine is that a series of slices can be sawed in a single sawing operation.
  • the object of the present invention is to remedy the aforementioned drawbacks by producing a sawing machine with two saw blades allowing the simultaneous sawing of two slices of thickness arbitrarily chosen in two independent blocks placed on either side of the machine. This produces a symmetrical, fast and economical machine.
  • Said chassis carries two saw blades arranged on either side thereof, symmetrically and parallel to its plane of symmetry, the fastening parts being arranged overhang on either side of the chassis, and said means of transport are located on either side of said frame and carry adjustment means capable of adjusting the position of the stone blocks.
  • said frame assumes the shape of a right prism with a triangular base formed of metal beams arranged along the edges of said prism and assembled by means known per se; the said horizontal pivot axis is located parallel to and near a prism edge perpendicular to the said triangular base, and the longitudinal axis of each of the two saw blades merges with the plane formed by the face of the prism opposite to the said horizontal pivot axis.
  • a frame guiding device is provided in the vicinity of the saw blades, so as to prevent any lateral deviation of the saw blades.
  • the said guide device consists of metal plates fixed parallel to the planes of the saw blades against a concrete block placed between the saw blades, and the chassis is fitted with rollers located on either side of the block concrete, so as to roll without play on said metal plates.
  • said means capable of animating said chassis with a movement oscillating around said horizontal pivot axis consist of a rod-crank system driven by an electric motor by means of a speed reduction device.
  • the wire of the saw blades comprises diamond segments, and one can advantageously provide for the other edge of each blade a concave curved shape, so as to distribute the tension forces in the blade.
  • said means for fixing the ends of the saw blades to said frame are provided to apply to them tensions in oblique directions relative to the longitudinal axis of the saw blades, in such a way that there appears in each saw blade a tension component perpendicular to the wire of the blades.
  • said means for applying to each saw blade oblique tensions relative to the longitudinal axis of this blade are constituted by a system of adjustable screws and locknuts whose axes are located in the plane of this blade, forming an acute angle towards the outside with the longitudinal axis of the blade.
  • the said means of transport capable of advancing the blocks of stone towards the saw blades consist of two carriages placed on either side of the machine on horizontal rails parallel to the planes of the saw blades, the advance speed of each of the carriages being adjustable.
  • Said means for adjusting the position of the blocks on the transport means are known per se and can advantageously consist of two cylinders integral with said transport means and two measuring fingers.
  • the chassis of the sawing machine shown in FIG. 1 affects the shape of a right prism with a triangular base formed of metal beams 1 to 5 arranged along the edges of said prism and assembled by means known per se.
  • a horizontal pivot axis 6 secured to a bearing 7 and located along an edge of the prism perpendicular to said triangular base of this prism allows the chassis to pivot.
  • the face of the prism opposite to said horizontal pivot axis 6 is provided for carrying two saw blades 8, biconcaves and with diamond segments, situated in two planes perpendicular to said horizontal pivot axis 6 on either side of the chassis.
  • the wire of the two saw blades 8 has an arcuate shape, the center of which coincides with the said horizontal pivot axis 6.
  • Each of the ends of the saw blades 8 is fixed to fixing pieces 9 integral with the ends of the two horizontal crosspieces 4 and 5 forming the edges of the prism opposite and parallel to said horizontal pivot axis 6; the fasteners 9 are themselves arranged cantilevered on either side of the chassis.
  • a system of screws and locknuts 10 mounted on said fixing pieces 9 makes it possible to put the saw blades 8 under tension, by means of connecting members 11 and studs 12, the longitudinal axes of said screws attachment 10 of each blade 8 being located in the plane of this blade by forming with the longitudinal axis of the blade 8 a certain angle towards the outside.
  • the upper horizontal cross member 4 is provided with an anchoring lug to which the upper end of a connecting rod 13 which is part of an alternative drive system comprising an electric motor 14 provided with a pinion 15 is fixed.
  • the arrangement of the bearings 7 and 19, of the crank 18 and of the connecting rod 13 is such that the longitudinal axis of the saws 8 always remains inclined relative to the vertical in the direction opposite to that of the advance.
  • the bearing 7 is placed so that the horizontal pivot axis 6 is located slightly above ground level, and a pit 20 is arranged in the ground between said bearing 7 and the alternative drive system, to allow the lower chassis beams and the lower horizontal crossmember 5 to oscillate freely.
  • means of transport consisting of two horizontal railways 21 parallel to the planes of the saw blades 8 and two carriages 22 capable to each carry a block of stone 23.
  • the sawing machine shown in FIG. 2 comprises a guide device intended to prevent any horizontal movement of the chassis.
  • a concrete block 24 is placed between the metal beams 1 and 2 of the machine, and carries two metal plates 25 on each of its lateral faces.
  • the concrete block is placed as a bridge over the pit 20 so as to provide sufficient space for the lower horizontal cross member 5.
  • rollers 28 are fixed to the vertical beams 1 and 2 by means of supports 29 bolted to the said vertical beams.
  • One of the important advantages provided by the invention resides in the fact that it combines the simplicity and the ease of operation of machines with a single blade with the symmetry and the balancing of the tensions of machines with several blades.
  • the machine according to the invention makes it possible to simultaneously saw two different blocks, of different dimensions, and even of different materials, according to slices of thickness arbitrarily chosen.
  • Another advantage of the invention is that it makes it very easy to modify the thickness of the sawed slices by a simple adjustment of the position of the blocks on the means of transport. In view of the simplicity of this operation for adjusting the thickness of the wafer, slices of any thickness can be sawn economically.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Sawing (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Claims (10)

1. Sägemaschine zum Zersägen von Steinblökken, die
- ein um eine waagrechte Achse (6) drehbar montiertes, bezüglich einer zur waagrechten Achse (6) senkrechten Ebene symmetrisches Gestell (1, 2, 3, 4, 5),
- Sägeblätter (8), deren zur waagrechten Drehachse (6) gekehrte Schneide die Form eines Kreisbogens hat, dessen Mittelpunkt mit der Achse (6) zusammenfällt, wobei diese Sägeblätter (8) an ihren äußeren Enden an mit dem Gestell (1, 2, 3,4,5) verbundenen und mit zur Befestigung der Enden der Sägeblätter (8) und deren Spannung geeigneten Bauteilen (10, 11, 12) versehenen Befestigungsteilen (9) befestigt sind,
- eine zur schwingenden Bewegung des Gestells (1, 2, 3, 4, 5) um die waagrechte Drehachse (6) geeignete Vorrichtung, wobei die Längsachse der Sägeblätter (8) in jedem Moment mit der Senkrechten einen spitzen Winkel einschließt, und
- eine zum waagrechten und zu den Ebenen der Sägeblätter in deren Richtung parallelen Vorschub eines oder mehrerer Steinblöcke (23) geeignete Transportvorrichtung

umfaßt, dadurch gekennzeichnet, daß das Gestell (1, 2, 3, 4, 5) zwei beidseitig des Gestells symmetrisch und parallel zu seiner Symmetrieebene angeordnete Sägeblätter (8) trägt, wobei die Befestigungsteile (9) freitragend beidseitig des Gestells (1, 2, 3, 4, 5) angeordnet sind und die Transportvorrichtung beidseitig des Gestells (1, 2, 3,4, 5) liegt und eine zur Regelung der Position der Steinblöcke geeignete Regelvorrichtung aufweist.
2. Sägemaschine nach Anspruch 1, dadurch gekennzeichnet, daß das Gestell die Form eines aus längs der Kanten des Prismas angeordneten und mit an sich bekannten Teilen verbundenen Metallträgern 1 bis 5 bestehenden Prismas mit dreieckiger Grundfläche hat, wobei die waagrechte Drehachse (6) parallel und nahe einer zur dreieckigen Grundfläche senkrechten Kante des Prismas angeordnet ist und die Längsachse jedes der zwei Sägeblätter (8) in der durch die der waagrechten Drehachse (6) gegenüberliegende Fläche des Prismas gebildeten Ebene liegt.
3. Sägemaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß in der Nähe der Sägeblätter (8) eine Führungsvorrichtung des Gestells angebracht ist, wobei diese Führungsvorrichtung geeignet ist, jegliche seitliche Abweichung der Sägeblätter (8) zu verhindern.
4. Sägemaschine nach Anspruch 3, dadurch gekennzeichnet, daß die Führungsvorrichtung aus parallel zu den Ebenen der Sägeblätter (8) an einem zwischen den Sägeblättern (8) gelegenen Betonblock (24) befestigten Metallplatten (25) besteht, wobei das Gestell mit beidseitig des Betonblockes (24) und ohne Spiel auf den Metallplatten (25) rollenden Rollen versehen ist.
5. Sägemaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die zur schwingenden Bewegung des Gestells um die waagrechte Drehachse (6) geeignete Vorrichtung aus einem durch einen Elektromotor (14) über ein Untersetzungsgetriebe (15, 16, 17) angetriebenen System von Pleuelstange und Kurbel (13,18) besteht.
6. Sägemaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Schneide der Sägeblätter (8) Diamantsegmente aufweist.
7. Sägemaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der den Schneiden der Sägeblätter (8) gegenüberliegende Rand derselben eine konkav gebogene Form hat.
8. Sägemaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Vorrichtung zur Befestigung der äußeren Enden der Sägeblätter (8) am Gestell dafür vorgesehen ist, an diesen gemäß der bezüglich der Längsachse der Sägeblätter (8) schrägen Richtungen Spannungen zu erzielen, so daß in jedem Sägeblatt (8) eine zur Schneide der Sägeblätter senkrechte Spannungskomponente auftritt.
9. Sägemaschine nach Anspruch 8, dadurch gekennzeichnet, daß die Vorrichtung zum Erzielen von bezüglich der Längsachse des Sägeblattes schrägen Spannungen an jedem Sägeblatt (8) aus einem System von verstellbarer Schraube und Sicherungsmutter besteht, wobei die Achsen der Schraube in der Ebene dieses Sägeblattes (8) liegen und mit der Längsachse des Sägeblattes einen spitzen Winkel gegen die Außenseite einschließen.
10. Sägemaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Transportvorrichtung zum Vorschub der Steinblöcke (23) gegen die Sägeblätter (8) aus zwei beidseitig der Maschine befindlichen Schlitten (22) auf waagrechten, zu den Ebenen der Sägeblätter (8) parallelen Schienen (21) besteht, wobei die Vorschubgeschwindigkeit jedes Schlittens (22) regelbar ist.
EP82870034A 1981-06-19 1982-06-18 Maschine zum Sägen von Steinblöcken Expired EP0069106B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82870034T ATE10347T1 (de) 1981-06-19 1982-06-18 Maschine zum saegen von steinbloecken.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8112132A FR2507951A1 (fr) 1981-06-19 1981-06-19 Machine pour le sciage de blocs de pierre
FR8112132 1981-06-19

Publications (2)

Publication Number Publication Date
EP0069106A1 EP0069106A1 (de) 1983-01-05
EP0069106B1 true EP0069106B1 (de) 1984-11-21

Family

ID=9259713

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82870034A Expired EP0069106B1 (de) 1981-06-19 1982-06-18 Maschine zum Sägen von Steinblöcken

Country Status (7)

Country Link
US (1) US4474164A (de)
EP (1) EP0069106B1 (de)
AT (1) ATE10347T1 (de)
DE (1) DE3261286D1 (de)
FR (1) FR2507951A1 (de)
IN (1) IN158486B (de)
ZA (1) ZA823647B (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3931837C1 (de) * 1989-09-23 1991-03-14 Peter G Werner
DE4140847B4 (de) * 1991-12-11 2005-02-03 Black & Decker Inc., Newark Kraftgetriebene Säge
US20040112359A1 (en) * 1997-04-04 2004-06-17 Chien-Min Sung Brazed diamond tools and methods for making the same
US8261455B2 (en) 2007-01-24 2012-09-11 Henrickson Erik P Reciprocating tool
CN101767374B (zh) * 2010-02-22 2012-06-06 林天华 平移翘板式石材锯机架
WO2015067213A1 (zh) * 2013-11-08 2015-05-14 昆山圣进威精密机械有限公司 拉锯

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE723034A (de) * 1968-10-28 1969-04-28

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1538512A (en) * 1919-07-05 1925-05-19 Lane Mfg Company Reciprocating sawing machine
FR1196676A (fr) * 1958-06-05 1959-11-25 Hyresgaesternas Sparkasse Och Procédé et machine pour le sciage de la pierre
CH497256A (fr) * 1968-10-28 1970-10-15 Egleme Paul Lame de scie alternative
NL6915839A (de) * 1968-10-28 1970-05-01
DE2306877A1 (de) * 1973-02-13 1974-08-29 Ernst Spielvogel Bearbeitungswerkzeug fuer groessere bloecke

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE723034A (de) * 1968-10-28 1969-04-28

Also Published As

Publication number Publication date
DE3261286D1 (en) 1985-01-03
ZA823647B (en) 1983-03-30
FR2507951B1 (de) 1984-09-14
US4474164A (en) 1984-10-02
EP0069106A1 (de) 1983-01-05
FR2507951A1 (fr) 1982-12-24
ATE10347T1 (de) 1984-12-15
IN158486B (de) 1986-11-22

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