EP0078041A2 - Chaîne à haver pour une machine à couper des pierres - Google Patents

Chaîne à haver pour une machine à couper des pierres Download PDF

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Publication number
EP0078041A2
EP0078041A2 EP82109816A EP82109816A EP0078041A2 EP 0078041 A2 EP0078041 A2 EP 0078041A2 EP 82109816 A EP82109816 A EP 82109816A EP 82109816 A EP82109816 A EP 82109816A EP 0078041 A2 EP0078041 A2 EP 0078041A2
Authority
EP
European Patent Office
Prior art keywords
cutting
cutting plate
plate
chisel
holder
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
EP82109816A
Other languages
German (de)
English (en)
Other versions
EP0078041B1 (fr
EP0078041A3 (en
Inventor
Johann Mylewski
Horst Weisner
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.)
Maschinenfabrik Korfmann GmbH
Original Assignee
Maschinenfabrik Korfmann GmbH
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
Priority claimed from DE19813142067 external-priority patent/DE3142067A1/de
Priority claimed from DE19813142068 external-priority patent/DE3142068A1/de
Priority claimed from DE19823225916 external-priority patent/DE3225916A1/de
Application filed by Maschinenfabrik Korfmann GmbH filed Critical Maschinenfabrik Korfmann GmbH
Publication of EP0078041A2 publication Critical patent/EP0078041A2/fr
Publication of EP0078041A3 publication Critical patent/EP0078041A3/de
Application granted granted Critical
Publication of EP0078041B1 publication Critical patent/EP0078041B1/fr
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
    • E21C35/18—Mining picks; Holders therefor
    • E21C35/183—Mining picks; Holders therefor with inserts or layers of wear-resisting material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B33/00—Sawing tools for saw mills, sawing machines, or sawing devices
    • B27B33/14—Saw chains
    • B27B33/142—Cutter elements
    • B27B33/144—Cutter elements having cutting inserts or exchangeable cutting teeth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B33/00—Sawing tools for saw mills, sawing machines, or sawing devices
    • B27B33/14—Saw chains
    • B27B33/142—Cutter elements
    • B27B33/145—Cutter elements having plural teeth on a single link
    • 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
    • B28D1/124—Saw chains; rod-like saw blades; saw cables
    • B28D1/125—Saw chains; rod-like saw blades; saw cables with exchangeable cutter bits or cutter segments
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
    • E21C25/22—Machines slitting solely by one or more cutter chains moving unidirectionally along jibs
    • E21C25/28—Chains or chain guides
    • E21C25/34—Chains

Definitions

  • the invention relates to a cutting chain for a stone cutting machine, which essentially consists of alternating bit holders and intermediate links each as chain links, the bit holders carrying a cutting plate which is held in a recess in the bit holder with the aid of tensioning means and has a circular or polygonal circumferential shape .
  • a chain of this type is e.g. known from European patent application 0028418.
  • An important property of this cutting chain is that after the cutting edges or cutting edge areas that are currently in engagement with the stone to be cut become worn or become dull, the clamping means of the cutting plates are loosened and the cutting plates are rotated by a predetermined amount. Then fresh cutting edges are available again so that the cut can be continued with a good result.
  • each insert is provided with an extension which is held in the receptacle and that after loosening the clamping means a rotation of each insert about its central axis as a result of a regular polygonal form fit between the extension and the receptacle or between the insert and the clamping device is only possible in predetermined steps.
  • the positioning and fixing task is thus separated from the circumferential shape of the cutting plate, which is then used exclusively for the cut and no longer for holding the cutting plate.
  • it is determined from the start which circumferential area of each insert is engaged during a cut, and then the step size and number of steps of the twist are determined accordingly and brought into effect in the design of the approach. In this way, an optimal utilization of each cutting plate is guaranteed with regard to its cutting capacity, moreover, each cutting plate remains in the predetermined position even at its very last cut, since the positive connection between the attachment on the cutting plate and the receptacle on the bit holder is free from any wear.
  • the inclusion within the chisel holder does not necessarily have to completely enclose the attachment, but it is sufficient if there is sufficient positive locking. If, for example, the shoulder has one or more pairs of edges / their respective individual edges run parallel to one another, a groove is sufficient as a receptacle in the bit holder in order to position the cutting plate correctly in each case.
  • the mixture then h a t each have the shape of an even-numbered uniform polygon.
  • the cutting plate has a similar shape and only one cutting edge engages with the rock during a cut, is it is particularly expedient to turn the next but one cutting edge of the one previously used to the interface when resharpening, that is to say when relocating the cutting plate, and the intermediate cutting edge during subsequent resharpening, which is then symmetrically reduced on both sides by the same parts. In this way, there is always a cutting pressure on the bit holder starting from the center of the cutting plate.
  • a threaded bolt can penetrate the cutting plate and the projection essentially along the central axis, which is therefore screwed into the bit holder.
  • a threaded bolt is provided onto which a nut pulling against the bit holder is screwed.
  • the latter solution is particularly advantageous in applications where strong corrosion is to be expected, so that threaded connections can rust after downtimes.
  • the positive connection can almost always be released by knocking out the wedge pin or the clamping sleeve with a mandrel, so that in the event of corrosion, the cutting plate can be loosened from the bit holder as good as ever.
  • a clamping finger designed as a bridge can be used as an alternative clamping means, one end of which is supported on the front side of the cutting insert and the other end of which is supported on a surface which is plane-parallel to the cutting insert. Similar results are obtained with a claw facing each other on the insert supported support surface and is clamped like a wedge between the support surface and the insert with the aid of a threaded bolt.
  • a clamping finger or a claw each of which covers part of the end face of the cutting inserts / the positive connection for specifying the rotation of the cutting insert with respect to the receptacle can also be between these two adjacent parts, that is to say between the cutting insert on the one hand and the clamping finger or the claw may be provided on the other hand.
  • a separate, non-releasable guide can be provided on the bit holder on the back of each cutting insert.
  • the inserts consist of hard metal or are covered with diamond chips, whereby the base body can also be made of hard metal. In the simplest case, they form an integral part of the approach; however, this solution is only used in rare cases due to the relatively high risk of breakage.
  • One version is less prone to breakage / in which the insert and the attachment each form a separate part, the inseparable connection being achieved by brazing.
  • the generally inevitable transition from the insert to the approach as a diameter jump can then no longer contribute to the risk of breakage due to its notch effect.
  • the approach preferably consists of a tough material, for example a tempered steel, which should have a real wear-resistant surface. Case-hardened steels are therefore also possible.
  • each cutting plate can be expedient, which can be brought about by a corresponding position of the receptacle within the bit holder and the clamping means.
  • each cutting edge can be undercut to achieve a clearance angle.
  • each insert is therefore arranged approximately at the level of the rear articulation axis of the chisel holder in the direction of travel and a hump is attached in front of the insert, which is optionally covered with hard metal or with diamond chips.
  • the height of the hump is selected so that it maintains a clear distance from the cut stone end face in the normal cut and only touches the cut surface in the event of an attempted straightening. In this way, major damage to the chamfer chain can be effectively prevented.
  • the positive connection through the attachment and the receptacle in the chisel holder can of course also be brought about by a reversal of the principle in which there is a regularly polygonal opening in the cutting insert, into which, for example, a projection attached to the chisel holder engages.
  • the projection can be arranged at the front end of a pin which can be knocked out of the chisel holder, the pin having the tough and wear-resistant properties already mentioned above.
  • the opening inside the cutting plate can be continuous since the center of the cutting plate does not take part in the cutting process anyway. In this way, the interaction with a clamping finger or a claw, which are correspondingly provided with an attachment, is particularly simple, and the projection can then be restricted to a pure centering function.
  • FIG. 1 shows a section of the chamfer chain 1 according to the invention. It consists of chisel holders 2, which alternate with intermediate members 3. Each bit holder 2 is provided with a tool carrier 4 (FIG. 3), which will be explained in more detail below.
  • the two chain links 2 and 3 are articulated to one another with the aid of bolts 5 and clamps 6, the bit holder 2 being double-walled and each intermediate link 3 being single-walled.
  • the chisel holders 2 shown in FIG. 1 form a sequence of 9 chisel holders, the tool carriers 4 of which are each designed differently. Together they result in the clearing profile of the cutting chain 1, which is shown schematically in cross section in FIG. 2.
  • FIG. 3 The actual structure of the chisel holder 2 and its further components is shown in FIG. 3, the chisel holder 2, for example, whose cutting tool is arranged exactly in the middle being selected from the sequence according to FIG. 1.
  • the tool carrier 4 which is assigned to the chisel holder 2, in turn consists of several components. At the lower end there is a base 11, and above it a plate 12. Inside the base 11 there are bores 8 which are aligned with through holes 9 inside the bit holder 2 when the tool holder 4 is inserted into the bit holder 2; to hold the clamping sleeves 7 are hammered into the through holes 9 and the aligned holes 8.
  • a chisel console 13 which is used to hold the actual cutting tool 14.
  • the latter consists essentially of a cutting plate 15 and a concentrically attached soldered shaft or shoulder 16, which is hexagonal in cross section.
  • the approach 16 is received by a correspondingly designed, continuous opening 17, which results in a rotationally fixed form fit between the cutting tool 14 and the chisel console 13.
  • a groove 20 is pierced within the extension 16, which in the functional position is aligned with a transverse bore 21 within the chisel console 13.
  • a taper pin 22 is driven into the transverse bore 21, which is preferably clamped inside the chisel console 13 and less inside the groove 20. It is therefore less intended to clamp the cutting tool 14 — the positioning and the absorption of cutting forces takes place through the positive connection between the attachment 16 and the opening 17 — rather to prevent the cutting tool 14 from sliding out of the chisel console 13.
  • the chisel console 13 is therefore arranged in the cutting direction at the rear end of the chisel holder 2, where an erection movement hardly leads to an increase in the feed of the cutting plate 15 relative to the cutting surface.
  • the respective rear pin 5 is approximately the fulcrum, so that the cutting plate 15, which is arranged essentially directly above it, retreats against the cutting direction when there is an uprighting movement of the bit holder 2.
  • tool holder 4 is on the plate at the front end 12 attached a hump 24, the height of which corresponds approximately to the height of the cutting plate 15 in the worn state. Contrary to the illustration in FIG. 3, its slightly rounded wear surface can be covered with hard metal or diamonds, which effectively counteracts rapid wear.
  • the hump 24 supports the clearing of the cutting profile while the cutting chain 1 is running.
  • a groove 24 is provided as a receptacle on the chisel console 13 and extends transversely to the direction of movement of the cutting chain 1.
  • the groove 24 is provided with respect to its base surface with vertical side walls into which the edges of a shoulder 23 with a square cross section on the cutting plate 15 fit straight.
  • the cutting plate 15 is thereby secured in the vertical direction and against rotation; their final determination -in, 'horizontal.
  • Direction is experienced by a threaded bolt 27 which penetrates the insert 15 and the molded or soldered extension 23 and is anchored within the chisel console 13.
  • the groove 24 can be provided with a corresponding stop, and the embossing in the form of a square depression in accordance with the outline shape of the extension 23 is also possible.
  • FIGS. 5-10 show the shape of different tool carriers 4, 4 'and 4' 'which are required to form an overall clearing profile.
  • the three tool carriers are arranged one after the other in a recurring sequence along the direction of movement of the cutting chain, the individual clearing profiles overlapping, so that there is an overall secure clearing of the chain profile.
  • the tool carrier 4 according to FIGS. 5 and 8 has already been explained with reference to FIG. 4.
  • two cutting inserts 15 lie directly next to one another, and the tool carrier 4 'is designed to be correspondingly wider in order to support the cutting inserts.
  • a single horizontal groove, in which there are two threaded holes for receiving the respective threaded bolts 27, is also sufficient for these two cutting inserts with their rear extensions 23.
  • a tool carrier according to FIG. 4 appears superfluous within a cutting chain if tool carriers 4 ′ with cutting plates 15 which are directly adjacent to one another are present in the same cutting chain.
  • the two cutting plates 15 are moved further apart; there is also a slight inclination. These cutting plates laterally limit the entire chain broaching profile, so that the cutting arm carrying the cutting chain can be moved in the cut slot without jamming.
  • the cutting plates 15 are again positioned using approximately horizontal grooves and threaded bolts 27.
  • the chisel holder 28 is formed in one piece, ie it is not provided with a separate tool holder.
  • a partial negative shape 30 of a uniformly hexagonal, slightly conical extension 31 which is soldered directly onto the back of the likewise hexagonal cutting plate 15 as a recess.
  • the negative mold 30 Opposite the negative mold 30 is a support surface 29 on which a claw 32 is supported.
  • the claw 32 is designed so that it rests exclusively on the support surface 12 and on the front of the cutting plate 15. It is tensioned with the aid of a threaded bolt 33, the direction of action of which runs approximately parallel to the plane of the support surface 29.
  • the plane of the support surface forms an angle of approximately 20 ° with that of the cutting plate 15, which results in very good and secure clamping forces.
  • the insert 15 has the shape of a regular hexagon, so that there are six side surfaces, three of which are designated a, b and c.
  • a symmetrical position to the center plane of the chisel holder 28 is therefore important so that no lateral cutting forces act on the chain link and thus on the chain guide, which result in increased wear of the chain guide.
  • an octagon In addition to a regular hexagon shape for the cutting plate 15, an octagon, a square or another shape following a grid can also be selected.
  • the exemplary embodiment according to FIG. 11 obviously also requires further chisel holders 28, which together form a complete chain clearing profile. Similar paths are followed here, as has already been explained with reference to FIGS. 5-10.
  • FIGS. 12 and 13 also shows a one-piece chisel holder 38 which is equipped in its front upper region with a hump 24 for containing erection movements during the cut.
  • a chisel console 13 on which a cutting plate 40 is held.
  • there is a bore in the chisel console 13 which points approximately in the running direction of the cutting chain 1 and into which a pin 39 is driven.
  • the front end the pin 39 protrudes over a contact surface in the manner of a projection and projects into an opening within the cutting plate 40.
  • the projection on the pin 39 and the opening in the cutting plate 40 are each hexagonal in cross section and match each other, so that when the pin 39 is firmly seated in the chisel console 13, the cutting plate 40 is positively fixed.
  • the cutting plate 40 is held with the aid of a clamping finger 7, which is designed like a bridge and rests with one end on the front of the cutting plate 40 and with its other end against a contact surface which is plane-parallel to the contact surface for the cutting plate 40 on the chisel console 13 is present.
  • a through hole for receiving a screw 42 which is screwed into a threaded hole within the chisel console 13.
  • the threaded bore is overall deeper, that is, further from the cutting point than the bore for receiving the pin 39, so that the clamping finger 41 assumes an obliquely downward position.
  • a further threaded hole for the screw 42 can be provided on the adjacent side of the contact surface for the clamping finger 41, so that two threaded holes are available, which z. B. is advantageous if a screw 41 is broken or one of the threaded holes is blocked for other reasons.
  • a ⁇ hexagon socket screw or a conventional screw with a hexagon head can be used as screw 42.
  • the cutting plate 40 is subjected to violent blows. This can lead to their breakage, and pin 39 can also be damaged or destroyed.
  • the replacement of the pin 39 is necessary, which is particularly facilitated in that an access hole is provided in the extension of its seat bore in the chisel console 13 of the chisel holder 38, through which the remnants of the pin 39 or the damaged pin are knocked out with a mandrel can be.
  • the pin 39 is made of hardened or externally hardened steel or case-hardened steel with a tough core. In this way, damage or destruction is largely prevented.
  • the cutting plate 40 is also supported by a trough in the lower region of the contact surface for the cutting plate 40, which also contributes to protecting the pin 39.
  • this additional guide is only available as long as the area of the cutting plate 40 lying here has not yet been worn out.
  • the surface which bears against the front of the cutting plate 40 is likewise provided with a hexagonal projection for engaging in the hexagonal opening in the cutting plate 40.
  • a hexagonal projection for engaging in the hexagonal opening in the cutting plate 40.
  • FIGS. 14 and 15 show a further exemplary embodiment of a bit holder 46 which is very similar to that according to FIGS. 12 and 13. Only the mounting and fixing of the cutting plate 47 are designed differently.
  • a square 49 adjoins the cutting plate 47, which is hard-soldered to the cutting plate 47 and has a cylindrical pin connection to improve the adhesion.
  • At the other end of the square there is a threaded bolt onto which a nut 48 is screwed and pulled against the chisel console 13.
  • the cutting plate 47 can only be rotated by 90 °, since the square 49 does not permit any other steps.
  • the same principles apply to the square 49 as to the pin 39 of the exemplary embodiment described above; it is therefore wear-resistant on the outside, but is provided with a tough core, for example tempered.
  • the threaded bolt 27 has to be loosened, the cutting plate 15 with the attachment 23 has to be rotated by the desired angular amount, and after inserting the attachment 23 into the groove 24 in the desired position, the threaded bolt 27 is fastened again.
  • the claw 32 after loosening the threaded bolt 33, the claw 32 must also be loosened until the unit formed from the cutting plate 15 and the extension 31 can be rotated or reinserted in the negative mold 30. Then the claw 32 is brought back into its functional position and the threaded bolt 33 is tightened.
  • the resharpening in the exemplary embodiment according to FIGS. 12 and 13 is carried out very similarly.
  • the clamping finger 41 is turned to the side and the cutting plate 40 is turned into the desired position.
  • the subsequent attachment is done in reverse order.
  • the nut 48 is first loosened, then the unit formed from the cutting plate 47, the square 49 and the threaded shank is pulled out of the opening in the chisel console 13 and inserted again in the new position; then the nut 48 is tightened again.
  • Figures 12-15 show that the invention can also be used successfully in conjunction with negative cutting angles; the associated contact surfaces on the chisel console 13 are each inclined slightly backwards.
  • the choice of the cutting angle is made according to the application of the individual case and is among other things depending on the stone to be cut and on the properties of the inserts used.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
EP82109816A 1981-10-23 1982-10-23 Chaîne à haver pour une machine à couper des pierres Expired EP0078041B1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE3142068 1981-10-23
DE3142067 1981-10-23
DE19813142067 DE3142067A1 (de) 1981-10-23 1981-10-23 Schraemkette an einer schraemmaschine
DE19813142068 DE3142068A1 (de) 1981-10-23 1981-10-23 Schraemkette an einer schraemmaschine
DE19823225916 DE3225916A1 (de) 1982-07-10 1982-07-10 Schraemkette fuer eine steinschneidmaschine
DE3225916 1982-07-10

Publications (3)

Publication Number Publication Date
EP0078041A2 true EP0078041A2 (fr) 1983-05-04
EP0078041A3 EP0078041A3 (en) 1983-08-17
EP0078041B1 EP0078041B1 (fr) 1986-03-12

Family

ID=27189636

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82109816A Expired EP0078041B1 (fr) 1981-10-23 1982-10-23 Chaîne à haver pour une machine à couper des pierres

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EP (1) EP0078041B1 (fr)
DE (1) DE3269867D1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0798446A2 (fr) * 1996-03-28 1997-10-01 Maschinenfabrik Korfmann GmbH Chaîne de havage pour une machine à couper des pierres dures tels que marbre et similaires
EP2324976A1 (fr) * 2009-11-19 2011-05-25 Nv Pmds Sa Chaîne de haveuse et haveuse
ITRM20100455A1 (it) * 2010-08-18 2012-02-19 Fantini Sud S P A Inserto perfezionato in diamante policristallino a bloccaggio amovibile e relativi portainserti, per le segatrici a catena di pietre ornamentali
BE1019468A3 (fr) * 2010-09-06 2012-07-03 P Marchandise Diamant Service P M D S Chaine de haveuse a roche avec porte-outils, procede de fabrication de celle-ci et haveuse.
ITBS20120099A1 (it) * 2012-06-29 2013-12-30 Apns Di Pasqualato Paolo Mario Catena di taglio per materiali lapidei
WO2016095944A1 (fr) * 2014-12-15 2016-06-23 Husqvarna Ab Procédé pour fabriquer un maillon de dispositif de coupe et maillon de dispositif de coupe
IT201800009296A1 (it) * 2018-10-09 2020-04-09 Fabio Bigini Utensile di taglio e tagliatrice a catena per materiale lapideo e simili

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB391736A (en) * 1933-01-09 1933-05-04 Alexander Anderson Improvements relating to pick-holders for the cutter chains of mining machines
GB422594A (en) * 1934-01-02 1935-01-15 Austin Hopkinson Improvements in or relating to coal and like cutting machines
GB614865A (en) * 1946-08-08 1948-12-23 Norman James Muschamp Improvements in or relating to pick boxes for mining machines
GB623346A (en) * 1947-05-03 1949-05-16 Norman James Muschamp Improvements in or relating to cutter devices for coal and the like cutting machines
DE1915152A1 (de) * 1969-03-25 1970-10-01 Eickhoff Geb Schraemmeisselhalter,der mit mindestens zwei nebeneinander angeordneten Schraemmeisseln besetzt ist
DE1583778B1 (de) * 1967-02-01 1971-02-25 Austin Hoy & Co Ltd Schraempicke
US3746396A (en) * 1970-12-31 1973-07-17 Continental Oil Co Cutter bit and method of causing rotation thereof
US4079796A (en) * 1976-03-22 1978-03-21 Arnol Staggs Cutting machine and augering tool
DE2919774A1 (de) * 1978-05-12 1979-11-15 Dresser Ind Mehrschneidenmeissel fuer eine schneidendrehtrommel

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB391736A (en) * 1933-01-09 1933-05-04 Alexander Anderson Improvements relating to pick-holders for the cutter chains of mining machines
GB422594A (en) * 1934-01-02 1935-01-15 Austin Hopkinson Improvements in or relating to coal and like cutting machines
GB614865A (en) * 1946-08-08 1948-12-23 Norman James Muschamp Improvements in or relating to pick boxes for mining machines
GB623346A (en) * 1947-05-03 1949-05-16 Norman James Muschamp Improvements in or relating to cutter devices for coal and the like cutting machines
DE1583778B1 (de) * 1967-02-01 1971-02-25 Austin Hoy & Co Ltd Schraempicke
DE1915152A1 (de) * 1969-03-25 1970-10-01 Eickhoff Geb Schraemmeisselhalter,der mit mindestens zwei nebeneinander angeordneten Schraemmeisseln besetzt ist
US3746396A (en) * 1970-12-31 1973-07-17 Continental Oil Co Cutter bit and method of causing rotation thereof
US4079796A (en) * 1976-03-22 1978-03-21 Arnol Staggs Cutting machine and augering tool
DE2919774A1 (de) * 1978-05-12 1979-11-15 Dresser Ind Mehrschneidenmeissel fuer eine schneidendrehtrommel

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0798446A2 (fr) * 1996-03-28 1997-10-01 Maschinenfabrik Korfmann GmbH Chaîne de havage pour une machine à couper des pierres dures tels que marbre et similaires
EP0798446A3 (fr) * 1996-03-28 1998-06-17 Maschinenfabrik Korfmann GmbH Chaíne de havage pour une machine à couper des pierres dures tels que marbre et similaires
EP2324976A1 (fr) * 2009-11-19 2011-05-25 Nv Pmds Sa Chaîne de haveuse et haveuse
BE1019003A3 (fr) * 2009-11-19 2011-12-06 Pmds Sa Nv Chaine de haveuse et haveuse.
ITRM20100455A1 (it) * 2010-08-18 2012-02-19 Fantini Sud S P A Inserto perfezionato in diamante policristallino a bloccaggio amovibile e relativi portainserti, per le segatrici a catena di pietre ornamentali
BE1019468A3 (fr) * 2010-09-06 2012-07-03 P Marchandise Diamant Service P M D S Chaine de haveuse a roche avec porte-outils, procede de fabrication de celle-ci et haveuse.
ITBS20120099A1 (it) * 2012-06-29 2013-12-30 Apns Di Pasqualato Paolo Mario Catena di taglio per materiali lapidei
WO2016095944A1 (fr) * 2014-12-15 2016-06-23 Husqvarna Ab Procédé pour fabriquer un maillon de dispositif de coupe et maillon de dispositif de coupe
IT201800009296A1 (it) * 2018-10-09 2020-04-09 Fabio Bigini Utensile di taglio e tagliatrice a catena per materiale lapideo e simili

Also Published As

Publication number Publication date
EP0078041B1 (fr) 1986-03-12
EP0078041A3 (en) 1983-08-17
DE3269867D1 (en) 1986-04-17

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