EP0142570A1 - Machine pour sciage de pierres - Google Patents

Machine pour sciage de pierres Download PDF

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Publication number
EP0142570A1
EP0142570A1 EP83111061A EP83111061A EP0142570A1 EP 0142570 A1 EP0142570 A1 EP 0142570A1 EP 83111061 A EP83111061 A EP 83111061A EP 83111061 A EP83111061 A EP 83111061A EP 0142570 A1 EP0142570 A1 EP 0142570A1
Authority
EP
European Patent Office
Prior art keywords
teeth
saw blade
sawing machine
frame
plane
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Withdrawn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
EP83111061A
Other languages
German (de)
English (en)
Inventor
Josef Henle
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 EP83111061A priority Critical patent/EP0142570A1/fr
Publication of EP0142570A1 publication Critical patent/EP0142570A1/fr
Withdrawn legal-status Critical Current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
    • 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 invention relates to a stone sawing machine, in particular a frame sawing machine, according to the preamble of claim 1.
  • Frame sawing machines for stone are used to cut slabs from stone blocks. For this purpose, an approximately horizontal frame with parallel saw blades is moved back and forth in a horizontal plane with a crank drive and at the same time lowered with a further drive on the stone block to be cut.
  • the saw blades used in a typical gang saw version are approx. 3 m long and the frame moves back and forth from tca. ⁇ 35 cm.
  • the saw blades consist of a steel carrier blade, which bears teeth at a distance of approx. 10 cm on the straight cutting edge. These teeth are usually diamond cutting elements made of sintered material with an interspersed diamond grain. These diamond cutting elements have a larger transverse diameter than the steel blade.
  • Frame saws are also equipped with a flushing device usually simply consists of a spray device for water above the gate frame.
  • This rinsing device is used on the one hand to cool and dissipate the frictional heat on the saw blades, and on the other hand the water is used to rinse the stone powder resulting from the grinding movement in the form of sludge from the cutting gap.
  • the object of the invention is therefore to increase the cutting performance in a stone sawing machine and to achieve the same panel thicknesses.
  • the teeth or groups of teeth are arranged offset upwards from a plane parallel to the plane of the reciprocating movement.
  • the transferred The arrangement is preferably designed such that the teeth or teeth which are arranged at the highest point lie approximately in the middle of the saw blade and the other teeth are arranged one after the other deeper.
  • the arrangement could also be such that the friction edges of the teeth are attached from one side of the saw blade to the other at different heights.
  • This different height arrangement can preferably be obtained by appropriate shaping of the saw blade with teeth of the same shape attached.
  • the height offset of the cutting edges can, however, also be obtained by a different height of the cutting elements themselves or by an inclination of a saw blade which is in itself straight in relation to the plane of the back and forth movement.
  • the arrangement can be such that one cut edge after the other is offset in height, or that several adjacent teeth in a group of teeth lie in the same (horizontal) plane and subsequent teeth or other groups of teeth with their cut edges are offset in height.
  • the back and forth movement of the saw blades must be greater than the distance between the teeth or the groups of teeth.
  • the individual teeth or groups of teeth cut offset in height and thus a height offset or step-shaped cutting plane is achieved on the stone block. Since the back and forth movement is greater than the distance between the teeth or the groups of teeth, the teeth are guided over a lower step in at least one end position of the saw blade and are therefore free. This allows the lower, flat cutting edge of a tooth to be rinsed from below and freed from the sludge. This rinses the diamond grains in the sintered material so that they grip more effectively with every cutting movement and lead to improved cutting performance.
  • the resulting sludge is also advantageously removed effectively from the cut. Every time one or more teeth are exposed, mud is mechanically pushed onto the step below, which is lower towards the outside of the stone block. At the same time, a gap is cleared towards the lower step through which the rinsing water can remove the sludge. A mechanical clearing of the cut combined with an improved rinsing option is thus achieved. Since this also removes the sludge, particularly in the inner, central area of the stone block, the longitudinal stability of the saw blades is improved, the saw blades practically no longer tilt and the desired uniform plate thicknesses are obtained. All in all, less lower pressure can be used at a higher lowering speed, which also increases the service life of the saw blades.
  • an inexpensive and simple embodiment of a saw blade is specified, which can be used in the existing machines as a replacement for the previous saw blades with a straight cutting edge.
  • the tooth-bearing edge of the long side of the saw blade should be concave, the teeth being placed in the previous narrow, elongated shape as usual.
  • the concave curvature can be carried out by a continuous arch or by the fact that the saw blade is milled out in steps and one or more teeth are attached to the individual steps. This concave curvature has the advantage that the highest cutting step on the stone block is approximately in the middle of the block and the mud is effectively cleared out and rinsed out on both sides.
  • the effect shown is achieved with only a slight curvature, ie with a height offset of the central area of the saw blade from the side areas of approximately 1.5 cm.
  • the optimal height offset depends on the type of rock to be cut, the saw blade length, the saw blade speed, the lowering speed and the width of the back and forth movement and must be determined according to these boundary conditions.
  • a frame saw 1 for rock is shown schematically with a frame 2, a stone block 3 with its supports 4 and a flushing device 5.
  • a creel frame 2 In the creel frame 2 are arranged side by side blades 6 (in Figure 1 is the direction of view in longitudinal Rich - direction of the saw blades 6), which consist of a support blade 7 made of steel and at the bottom spaced cutting elements 8.
  • the frame 2 is connected to a drive (not shown) which moves it back and forth in the longitudinal direction of the saw blades 6.
  • the gate frame 2 is connected to a lowering device (also not shown) which lowers it downwards.
  • a typical lowering speed which depends on the machine and in particular on the type of rock, is around 2 mm / min.
  • the flushing device 5 consists of one or more tubes above the gate frame 2, which are provided with spray nozzles 9, from which the coolant, usually water, emerges. 1 shows the state in which the stone block 3 has already been cut through by about two thirds. The coolant then runs into the individual cuts 10 and on both sides of the support blades 7 to the somewhat wider cutting elements 8.
  • FIG. 2 shows a first embodiment of a saw blade according to the invention.
  • the lower edge of the saw blade 6 is concavely curved upwards by a certain amount 11.
  • the cutting elements 8 are placed on this curved edge in the usual way.
  • the amount 11 of the height offset in the central area is relatively small compared to the length of the saw blade, the optimal size depending on the machine and the type of rock to be cut.
  • the saw blade 6 in the area of the circle A from FIG. 2 was shown in FIG. 3 on a scale greatly enlarged in the vertical direction.
  • the three left-hand cutting elements 12, 13, 14 can be seen, which are each arranged at a distance 15 from one another.
  • the saw blade 6 is shown in the middle position of its back and forth movement, the dash lines 16, 17, 18 represent the central positions of the cutting elements 12, 13, 14.
  • the arrow ends each reflecting the end positions. It is essential that the back and forth movement takes place over a larger width than the distance 15 between two adjacent and offset teeth. This creates an overlap area, which is indicated by the arrows 22, 23.
  • the cutting elements 13, 14 each lift off their cut surfaces on the stone block and come to lie freely above the step-shaped design underneath. In this position, sludge can also be removed from below and the sludge can be rinsed out to the (left) side.
  • FIGS. 4 and 5 Although in FIG. 3 a first exemplary embodiment with successively vertically offset cutting elements 12, 13, 14 is shown, while in FIGS. 4 and 5 groups of cutting elements in each case are arranged on one level. It should be emphasized again that in Fig. 3 the scale in the vertical direction is greatly enlarged compared to the scale in the horizontal direction, so that the cutting elements 12, 13, 14 are much longer than high in natural size and also the height offset is less.
  • 4 and 5 are also shown largely schematically, with only a few steps and cutting elements enlarged in the vertical direction being selected for a clear representation.
  • a further embodiment of a saw blade 6 is shown, in which five groups 24 to 28 of teeth are each arranged in a horizontal plane.
  • the middle group 26 consists (here schematically) of four cutting elements, the adjacent lower lying groups 25 and 27 each of three cutting elements and the again adjoining, even lower lying side groups 24 and 28 each consisting of two cutting elements.
  • a schematically illustrated crank drive 29 is articulated with its crank 30 to the saw blade 6. The saw blade is drawn in its right end position in FIG. 4 and in its left end position in FIG. 5.
  • the saw blade 6 has already penetrated a certain amount into the stone block 3, which is shown cut in the lower area. This shows the horizontal step-shaped cutting edge in the stone block. From Fig. 4 it can be seen that in the right area of the back and forth movement for the saw blade 6, the cutting element groups 24 and 25 and the left teeth of the group 26 rest and work on the stone block. The right teeth of group 26 and the cutting elements of groups 27 and 28 are free and stand above the steps below. When moving into the other end position, as shown in FIG. 5, the cutting element groups 27 and 28 and the right teeth from the middle group 26 are used, the remaining cutting elements being released or being guided completely out of the area of the block 3 will. It can now be seen without further ado that sludge in the cut is both mechanically cleared out by moving it from one step to the other and, in addition, can be rinsed out well by the coolant below the released cutting elements.
  • the object of the application solves in a simple manner the problem of inadequate removal of sludge and the resulting relatively low feed rates with runaway saw blades, which has been prevalent in frame sawing machines for stone.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
EP83111061A 1983-11-05 1983-11-05 Machine pour sciage de pierres Withdrawn EP0142570A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP83111061A EP0142570A1 (fr) 1983-11-05 1983-11-05 Machine pour sciage de pierres

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP83111061A EP0142570A1 (fr) 1983-11-05 1983-11-05 Machine pour sciage de pierres

Publications (1)

Publication Number Publication Date
EP0142570A1 true EP0142570A1 (fr) 1985-05-29

Family

ID=8190794

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83111061A Withdrawn EP0142570A1 (fr) 1983-11-05 1983-11-05 Machine pour sciage de pierres

Country Status (1)

Country Link
EP (1) EP0142570A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT399681B (de) * 1993-11-19 1995-06-26 Wintersteiger Gmbh & Co Gattersäge
WO2009124415A1 (fr) * 2008-04-09 2009-10-15 Wang Youkuan Lame de scie en pierre
US7771249B2 (en) 2007-03-30 2010-08-10 Park Industries, Inc. Corner saw
WO2011063437A1 (fr) * 2009-11-26 2011-06-03 Böhler-Uddeholm Precision Strip GmbH Lame de scie pour scies à cadre pour couper de la pierre
CN102241076A (zh) * 2010-05-11 2011-11-16 戴艾霖 能切割2毫米厚度大理石超薄板的金刚石串珠多绳锯机
CN102275227A (zh) * 2011-08-23 2011-12-14 佛山市科达石材机械有限公司 石材排锯机
CN101279485B (zh) * 2007-04-02 2012-01-25 龙海市多棱锯条有限公司 石材锯条
CN106914990A (zh) * 2017-03-30 2017-07-04 长葛市老城昌宝建筑机械配件厂 一种利于排屑的石材锯条
US10201914B2 (en) 2015-01-20 2019-02-12 Park Industries, Inc. Material loading apparatus

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE627056A (fr) *
FR1008422A (fr) * 1949-01-17 1952-05-19 An Pignone Soc Perfectionnements apportés aux machines pour scier du marbre et autres pierres dures
US2829632A (en) * 1956-09-18 1958-04-08 Briar Hill Stone Company Slanted tooth saw blade for cutting stone
US3760789A (en) * 1968-10-28 1973-09-25 Norton Co Saw blade
AU452685B2 (en) * 1970-06-20 1974-08-27 Cowling Ab Improvements in saws for cutting stone andthe like

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE627056A (fr) *
FR1008422A (fr) * 1949-01-17 1952-05-19 An Pignone Soc Perfectionnements apportés aux machines pour scier du marbre et autres pierres dures
US2829632A (en) * 1956-09-18 1958-04-08 Briar Hill Stone Company Slanted tooth saw blade for cutting stone
US3760789A (en) * 1968-10-28 1973-09-25 Norton Co Saw blade
AU452685B2 (en) * 1970-06-20 1974-08-27 Cowling Ab Improvements in saws for cutting stone andthe like

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
THE OFFICIAL GAZETTE OF THE UNITED STATES PATENT OFFICE, 3. November 1891, Seite 629 *

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT399681B (de) * 1993-11-19 1995-06-26 Wintersteiger Gmbh & Co Gattersäge
US7771249B2 (en) 2007-03-30 2010-08-10 Park Industries, Inc. Corner saw
US9186815B2 (en) 2007-03-30 2015-11-17 Park Industries, Inc. Corner saw
US8506353B2 (en) 2007-03-30 2013-08-13 Park Industries, Inc. Method of cutting a corner out of a workpiece
US8100740B2 (en) 2007-03-30 2012-01-24 Park Industries, Inc. Corner saw
CN101279485B (zh) * 2007-04-02 2012-01-25 龙海市多棱锯条有限公司 石材锯条
WO2009124415A1 (fr) * 2008-04-09 2009-10-15 Wang Youkuan Lame de scie en pierre
WO2011063437A1 (fr) * 2009-11-26 2011-06-03 Böhler-Uddeholm Precision Strip GmbH Lame de scie pour scies à cadre pour couper de la pierre
CN102241076B (zh) * 2010-05-11 2015-04-15 戴艾霖 能切割2毫米厚度大理石超薄板的金刚石串珠多绳锯机
CN102241076A (zh) * 2010-05-11 2011-11-16 戴艾霖 能切割2毫米厚度大理石超薄板的金刚石串珠多绳锯机
CN102275227A (zh) * 2011-08-23 2011-12-14 佛山市科达石材机械有限公司 石材排锯机
US10201914B2 (en) 2015-01-20 2019-02-12 Park Industries, Inc. Material loading apparatus
US11446843B2 (en) 2015-01-20 2022-09-20 Park Industries, Inc. Material loading apparatus
CN106914990A (zh) * 2017-03-30 2017-07-04 长葛市老城昌宝建筑机械配件厂 一种利于排屑的石材锯条

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