EP0089499B1 - Outil tranchant pour une chaîne ou une courroie d'haveuse - Google Patents

Outil tranchant pour une chaîne ou une courroie d'haveuse Download PDF

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Publication number
EP0089499B1
EP0089499B1 EP83101676A EP83101676A EP0089499B1 EP 0089499 B1 EP0089499 B1 EP 0089499B1 EP 83101676 A EP83101676 A EP 83101676A EP 83101676 A EP83101676 A EP 83101676A EP 0089499 B1 EP0089499 B1 EP 0089499B1
Authority
EP
European Patent Office
Prior art keywords
cutting
cutter
main body
belt
cutting tool
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
EP83101676A
Other languages
German (de)
English (en)
Other versions
EP0089499A1 (fr
Inventor
Johann Mylewski
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
Application filed by Maschinenfabrik Korfmann GmbH filed Critical Maschinenfabrik Korfmann GmbH
Priority to AT83101676T priority Critical patent/ATE17152T1/de
Publication of EP0089499A1 publication Critical patent/EP0089499A1/fr
Application granted granted Critical
Publication of EP0089499B1 publication Critical patent/EP0089499B1/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • B27B33/141—Saw chains with means to control the depth of cut
    • 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

Definitions

  • the invention relates to a cutting tool for a cutting chain or a cutting belt, which consists of a base body with attached cutting badges, which are formed from a cutting body with a fastening attachment.
  • the cutting tools dull very quickly, so that the cutting tools must be replaced before any significant wear on the associated cutting arm or on the cutting chain or the cutting belt.
  • the cutting badges are usually soldered on, so that the base body and, if appropriate, the chain link carrying the cutting badge must be completely replaced and a fresh cutting badge must be fitted. This mode of operation is very cumbersome, since it is sometimes necessary to disassemble the cutter chain; in any case, operating a cutter machine requires considerable additional effort to ensure that worn cutter chains are processed.
  • the invention is seen in the fact that the base body is provided with an opening on the side facing the removal surface, that the cutting body of the cutting badge protrudes through the opening and that the attachment shoulder of the cutting badge on the one hand on the back of the opening to form a positive connection and on the other Part of a chain link, a belt section or on a shaped piece that approximately fills a cavity of the base body and is a detachable or fixed part of the cutting chain or cutting belt.
  • the invention therefore proposes that the base body of the cutting tool partially overlaps the cutting badge in such a way that only the cutting body of the cutting badge protrudes through the opening. Even if fitting rust should form in the form-fitting attachment of the cutting badge to the base body and insofar as difficulty is to be overcome when dismantling a worn cutting badge, targeted blows on the worn cutting surface of the cutting badge can release this positive connection with a probability bordering on certainty will. This applies in particular to the case that the base body consists of a cap made of investment casting, which is very robust and consequently survives such treatment without damage.
  • the back of the attachment of the cutting badge lies against a part of the chain link or a belt section in order to prevent it from sliding out of the opening in the base body.
  • the cavity of the base body it is expedient for the cavity of the base body to be filled with a shaped piece, the outer shape of which approximately corresponds to the shape of the cavity and which bears against the rear of the fastening attachment of the cutting badge.
  • the fitting is also a detachable or fixed component of the chain or belt. The compressive forces acting transversely to the direction of travel of the cutting tool are then passed directly over the fitting to the chain or belt underneath and the scraper arm supporting it.
  • the cutting badge is not only interchangeable, it also carries a plurality of cutting edges, so that moving the cutting badge again brings an unused cutting edge to the cutting point.
  • a plurality of cutting edges For example, 4, 6 or any other number of cutting edges can be selected, in which case the outline shape of the fastening attachment has the same number of edges or corners and the form-fitting contact surface on the base body also.
  • a positive cutting angle is understood to mean an angle of less than 90 ° between the fresh removal surface and the cutting surface of the cutting edge pointing in the running direction.
  • the cutting surface of the cutting tool according to the invention is set with diamonds, but the free surface of the cutting body facing the removal surface can also be set with diamonds; in special applications, it may also be advantageous to set diamonds in the open area alone.
  • the attachment of the cutting badge in the cutting tool according to the invention creates almost ideal conditions for good cutting conditions. With a slight inclination of the side of the base body facing the removal surface, the above-mentioned favorable angles automatically occur when the respective cutting surfaces of the cutting body are drawn inwards in the manner of a truncated cone. In this way, a very gentle operation is achieved because optimal cutting conditions are always achieved.
  • the distance between the cutting application point and the belt center is small, so that there is only a small set-up torque of the base body during the cut.
  • the fact that the cutting edge enters the ablation surface associated with the installation of the respective base body and the associated abruptly increasing cutting performance can endanger the chain or the belt.
  • the invention therefore proposes that a hard metal plate or a hard metal pin is inserted on the front of the base body, which in each case avoid excessive wear at this point if the base body comes into contact with the removal surface. Since they are interchangeable, they can be replaced with new ones after they have worn out.
  • the invention is illustrated in connection with a belt 1, which is formed in one piece with all the necessary projections and additional parts. These primarily include blocks 2, which are arranged at regular intervals on the underside of the belt 1, and shaped pieces 14 at the locations opposite the blocks on the side of the belt 1 facing the abrasion surface 4.
  • the belt 1 is preferably made of plastic with a fabric insert Glass, carbon or steel fibers (not shown) at its center.
  • the base body 6 is positively slipped onto the molded piece 14, a projection 15 on the front of the base body requiring a pivoting movement when it is placed on it, and this means that this side of the base body 6 is anchored in a positive-locking manner transversely to the running direction of the belt 1.
  • the base body 6 When the belt 1 is subjected to high loads, there is a risk that the base body 6 will be erected slightly, that is to say it will rise on its front side, as a result of a moment resulting from the distance between the cutting point of application and the belt tensile force. It cannot be excluded that the base body 6 touches the removal surface 4 with its front side.
  • a hard metal plate 20 is arranged at this point, the shaft 21 of which is inserted in a corresponding bore 19. The hard metal plate 20 can be exchanged or rotated very easily.
  • the exemplary embodiment shown in FIG. 2 differs from that according to FIG. 1 mainly by the different belt construction and the resulting changes.
  • the shaped piece 14 consists of steel and is screwed onto the belt 1 from below with the aid of screws 25.
  • the belt 1 is designed as a continuous flat belt, on the underside of which blocks 2 made of plastic are fastened with the aid of the screws 25.
  • the guides of the associated cutting arm are not shown any further since they are insignificant for the configuration of the invention. Since the molding 14 is made of steel anyway, for. B. from investment casting, it does not require a steel plate 18, but the cutting badge 7 lies with its attachment projection 9 directly on the fitting 14.
  • holes are required for the screws 25 in a built belt.
  • care must be taken to ensure that the corresponding holes in the belt 1 do not damage or interrupt the fabric lying inside to reinforce the belt. that dangerous demolition opportunities arise. It is therefore expedient in this case to provide belts 1 which do not contain any support fabric in their center or the holes have already been taken into account in the manufacture in such a way that the fabric is laterally accommodated in the remaining belt areas without interruption.
  • a hard metal pin 24 is inserted on the front of the base body 6, which is optionally accessible via the bore 19 and can be knocked out if, for. B. wear requires it. Like the hard metal plate 20, it serves to protect the base body 6 when there is an uprighting movement during the cutting process.
  • FIG. 3 shows a sectional view along the line 111-111 in FIG. 1. Parts of the cutting arm are also not shown since they are irrelevant in connection with the invention. From this view it is clear that the cutting badge 7, as shown in FIGS. 1 and 2, only covers part of the cutting slot width.
  • the arrangement of two openings 8 within one and the same base body 6 is possible, in which case both openings 8 are arranged symmetrically to the central plane of the base body 6, so that cutting badges 28 are used to the side of the base body.
  • cutting badges 28 belong to a base body assigned behind the plane of the drawing, they are shown in broken lines in FIG. 3.
  • the cutting badges 28 are constructed in a customary manner and also bear directly or indirectly on the shaped piece 14 in the manner shown in FIGS. 1 and 2.
  • an arrangement of the cutting badges 7 in a staggering is also possible, that is to say one behind the other in the running direction, but slightly offset laterally towards the center.
  • the corresponding side of the base body can be designed in a stepped manner so that the cutting plate located at the rear also reaches the removal surface 4 with the same shape.
  • the implementation or replacement of a cutting badge 7 in a cutting tool 3 according to the invention is very simple. With the help of hydraulic pliers, which are in any case kept ready in the vicinity of a cutting machine, the locking bolt 16 can be pressed out of the bore 27 without prior preparation and the base body 6 can be lifted off. The cutting badge 7 is thus already freed, at most a slight pressure or impact is still required to loosen the fastening projection 9 from the corresponding contact shape. Thereafter, the cutting badge is rotated or replaced by a fresh one and the base body 6 is placed on the shaped piece 14 again in a pivoting movement around the projection 15. Then a new locking bolt 16 is inserted into the bore 27 and flared at the ends with the same hydraulic pliers so that it cannot fall out.
  • the material for the cutting bodies 9 of the cutting plates 7 is hard metal, in particular, however, set diamonds, which are ground or embedded in a bond at random or directed as splinters.
  • diamonds which are subject to the described favorable cutting angles, the result is such a favorable cut that the proportion of friction is much lower compared to a more scraping removal. This means that less heat is generated during the cutting process, so that less cooling and rinsing water can be used. This is particularly important for applications in which the cooling and rinsing water does not run together again, but seeps into the floor. It must then be brought separately and in the amount of the amount used, which is associated with additional costs. With the cutting tool according to the invention, the amount of water can be reduced by, for example, 280 liters / minute. to approx. 50 liters / min. possible with otherwise the same feed speed and engagement length.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Mining & Mineral Resources (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)
  • Knives (AREA)
  • Scissors And Nippers (AREA)
  • Harvester Elements (AREA)
  • Adornments (AREA)
  • Workshop Equipment, Work Benches, Supports, Or Storage Means (AREA)

Claims (11)

1. Outil tranchant pour une chaîne ou une courroie d'haveuse, composé d'un corps de base (6) comportant des plaquettes tranchantes (7) fixées sur ce corps qui sont formées par un corps tranchant (10) avec un épaulement de fixation, caractérisé en ce que la face du corps de base (6) tournée vers la surface de travail (4) est pourvue d'un orifice (8), que le corps tranchant (10) de la plaquette tranchante (7) fait saillie à travers l'orifice (8) et que l'épaulement de fixation (9) de la plaquette tranchante (7) donne contre, d'une part, le dos de l'orifice (8) en formant une fermeture ajustée exactement et d'autre part contre une partie de maillon de chaîne, une section de courroie ou contre une pièce façonnée (14) qui remplit approximativement une cavité du corps de base (6) et qui est un élément amovible ou fixe de la chaîne ou de la courroie d'haveuse (1).
2. Outil tranchant selon la revendication 1, caractérisé en ce que le corps de base (6) est formé comme un capuchon en alliage d'acier moulé de précision.
3. Outil tranchant selon les revendications 1 et 2, caractérisé en ce que la pièce façonnée (14) est constituée en acier et qu'elle est vissée sur la chaîne ou la courroie d'haveuse (1 ).
4. Outil tranchant selon les revendications 1 et 2, caractérisé en ce que la pièce façonnée (14) est pourvue d'un creux, qu'une plaque d'acier (18) est encastrée dans le creux et que la plaque d'acier (18) donne contre le dos de l'épaulement de fixation (9) de la plaquette tranchante (7).
5. Outil tranchant selon l'une des revendications 1 à 4, caractérisé en ce qu'une fermeture ajustée exactement, qui est réalisée à l'aide d'une partie en saillie et qui agit verticalement par rapport au sens de la marche, est prévue entre la pièce façonnée (14) et le corps de base (6) sur la face qui est la face antérieure de la chaîne ou courroie (1) dans le sens de la marche et qu'un boulon de fermeture (16) ou une douille de fermeture est emboîtée dans la pièce façonnée (14) et dans le corps de base (6) à travers des forures alignées (27).
6. Outil tranchant selon l'une des revendications précédentes, caractérisé en ce que la forme de la périphérie de l'épaulement de fixation (9) de la plaquette tranchante (7) et celle de la surface d'appui du corps de base (6) sont formées comme des polygones réguliers, en particulier comme des carrés ou des hexagones.
7. Outil tranchant selon l'une des revendications précédentes, caractérisé en ce que la face du corps de base (6) qui contient l'orifice a un angle aigu avec le sens de marche de la chaîne ou de la courroie (1) et que la plus grande distance entre cette face et la chaîne ou courroie (1) se trouve sur la face antérieure du corps de base (6).
8. Outil tranchant selon l'une des revendications précédentes, caractérisé en ce qu'une plaque de métal dur (20) ou une broche de métal dur (24) qui sont respectivement tournées vers la surface de travail sont encastrées dans la face antérieure du corps de base (6).
9. Outil tranchant selon la revendication 6, caractérisé en ce que le corps tranchant (10) présente le même nombre de tranchants que l'épaulement de fixation (9) présente de coins et que chaque tranchant présente un angle positif de coupe et un angle de dépouille.
10. Outil tranchant selon l'une des revendications précédentes, caractérisé en ce que le corps de base (6) est pourvu d'un orifice supplémentaire et d'une plaquette tranchante supplémentaire (28) et que les plaquettes tranchantes (28) sont disposées de façon symétrique par rapport à l'axe longitudinal du corps de base (6).
11. Outil tranchant selon l'une des revendications précédentes, caractérisé en ce que l'orifice (8) respectif et la plaquette tranchante (7) respective sont disposés à l'extrémité postérieure du corps de base (6).
EP83101676A 1982-03-15 1983-02-22 Outil tranchant pour une chaîne ou une courroie d'haveuse Expired EP0089499B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83101676T ATE17152T1 (de) 1982-03-15 1983-02-22 Schneidwerkzeug fuer eine schraemkette oder einen schraemriemen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823209391 DE3209391A1 (de) 1982-03-15 1982-03-15 Schneidewerkzeug fuer eine schraemkette oder einen schraemriemen
DE3209391 1982-03-15

Publications (2)

Publication Number Publication Date
EP0089499A1 EP0089499A1 (fr) 1983-09-28
EP0089499B1 true EP0089499B1 (fr) 1985-12-27

Family

ID=6158302

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83101676A Expired EP0089499B1 (fr) 1982-03-15 1983-02-22 Outil tranchant pour une chaîne ou une courroie d'haveuse

Country Status (3)

Country Link
EP (1) EP0089499B1 (fr)
AT (1) ATE17152T1 (fr)
DE (2) DE3209391A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1000418A4 (fr) * 1987-03-23 1988-12-06 Diamant Boart Sa Bras haveur.
DE3830047C1 (fr) * 1988-09-03 1990-04-26 Maschinenfabrik Korfmann Gmbh, 5810 Witten, De
DE9110796U1 (de) * 1991-07-16 1991-11-14 Maschinenfabrik Korfmann Gmbh, 5810 Witten Schrämarm für Schrämmaschinen zum Schneiden von Hartgestein
DE4132881A1 (de) 1991-10-03 1993-07-29 Papst Motoren Gmbh & Co Kg Ansteuerschaltung fuer buerstenlose gleichstrommotoren

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1468914A (en) * 1920-03-25 1923-09-25 Morgan Olive Eugene Chain cutter for mining machines
DE1816712U (de) * 1960-06-14 1960-08-18 Eickhoff Geb Schraemmeissel und schraemmeisselhalter, insbesondere fuer schraemmwalzen.
US3485533A (en) * 1967-02-01 1969-12-23 Austin Hoy & Co Ltd Cutter picks
GB1388503A (en) * 1972-12-01 1975-03-26 Sandvik Ab Rock milling cutters
DE2437361C3 (de) * 1974-08-02 1986-06-19 Wolfgang Ing.(Grad.) 4700 Hamm Vetter Meißel für einen Kohlenhobel o.dgl.
US4240669A (en) * 1978-10-02 1980-12-23 Joy Manufacturing Company Mining cutter bit holder and mounting assemblies
CA1154040A (fr) * 1980-04-21 1983-09-20 William P. Sulosky Methode de fixation de mises de coupe

Also Published As

Publication number Publication date
DE3361595D1 (en) 1986-02-06
ATE17152T1 (de) 1986-01-15
DE3209391A1 (de) 1983-09-22
EP0089499A1 (fr) 1983-09-28

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