• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    In an arrangement for fixing a chisel on a cutting tool of a cutting machine with a bit holder and by surface pressure in a conical receiving the chisel holder against an axial stop, which is provided in the conical receptacle of the chisel holder releasably fixed rotationally symmetrical chisel, the chisel a the Axial length of the receptacle for the chisel has axial length exceeding, has the fixed state of the edge of the receptacle (5) superior part of the chisel (2) at its outer diameter on an inwardly inclined conical chamfer (10).
    公开号:AT511531A1
    申请号:T707/2011
    申请日:2011-05-18
    公开日:2012-12-15
    发明作者:Roman Dipl Ing Gerer；Ralf Dipl Ing Grief
    申请人:Sandvik Mining & Constr Oy；
    IPC主号:
    专利说明:

    The invention relates to an arrangement for fixing a chisel on a cutting tool of a cutting machine with a chisel holder and a surface pressure in a conical recording of the chisel holder against an axial stop releasably fixed rotationally symmetric chisel, wherein the chisel has a axial length of the receptacle for the chisel over axial Length has, as well as a chisel arrangement for a cutting machine.
    An arrangement for fixing a chisel or a chisel arrangement for a cutting machine of the type mentioned above has become known, for example, from the Austrian Patent AT 404 969 B. This document discloses a chisel holder with a chisel, into which a chisel for mining machinery is inserted. The chisel holder serves to set the chisel, for example, on cutting rollers or similar Schrämwerkzeugen of cutting machines, the chisel bush arranged between bit holder and chisel is designed as a wearing part and increases the life of the chisel holder.
    The connection of the chisel on the chisel with the chisel holder takes place in the cited prior art via a surface pressure of slightly tapered chisel on the inner wall of a corresponding conical recording in the chisel holder, being used for mounting the chisel in the chisel and together with this in the chisel holder is taken. The hammering of the bit with the chisel is done to a point where the chisel at the bottom of the recording at a stop comes to rest, the achievement of the system at the stop when driving due to the high surface pressure occurring is not readily apparent. For this reason, the chisel bush according to AT 404 969 B is in its axial direction.
    • Length ·················································································································································································································································· Control of correct insertion or wrapping can be done.
    When Schrämvorgang naturally occur very high reaction forces on the chisel, which are transmitted both over the shank of the bit and in particular Uber located in the immediate vicinity of the receiving projecting part of the chisel bushing collar of the bit on this protruding portion of the chisel, thereby creating a Flanging the said area can come. With progressive wear of the chisel, it comes through the forging forces to a cold welding between the chisel and the chisel holder, so that a replacement of the chisel with the chisel considerably more difficult if it was even impossible.
    Starting from this prior art, the object of the present invention is to avoid beading and, as a consequence, cold welding of a chisel bushing used against a stop, in order to allow improved replacement of the wearing parts, at the same time facilitating simplified checking of the correct insertion or removal To be allowed to strike.
    To solve this problem, an arrangement for determining a chisel of the type mentioned is inventively further developed, that in the fixed state the edge of the receptacle superior part of the chisel has an inwardly inclined conical chamfer on its outer diameter. Due to the inventive design of the chisel in its receiving towering part is then when the material of the chisel is deformed and pressed outward due to the cutting forces, not enough material available to form a flanging in contact with the edge surrounding the receptacle the chisel holder can occur, so that the detachably connected parts, namely chisel and chisel holder, are not inextricably linked by a cold welding.
    The chamfer angle of the chamfer is of paramount importance for optimum guidance of the chisel while avoiding flaring of the chisel over the edge of the chuck holder. In the context of the present invention, it is preferred in this connection that the angle of inclination of the chamfer against the generatrix of the outer casing of the chisel bush is between 15 and 30 °, preferably 23 °.
    In order to enable a visual check of the correct insertion of the bit bushing, so the collapse of the bit bushing until it rests against the axial stop without measuring, the invention is preferably further developed such that the conical chamfering in the abutting against the axial stop position of the chisel bushing directly on Edge of the recess begins. This means that the distance between the beginning of the chamfer and the mating stop face of the chisel cooperating with the stop of the receptacle corresponds to the length of the receptacle between the edge of the receptacle and the axial stop.
    Advantageously, the inventive design is dimensioned so that the surface pressure between the receptacle and the chisel is adjusted over the entire axial length of the recording is substantially constant and ♦ * * · * * * * * * * * * · * * * * * *
    Is at least 150 N / mm2, which value is considered to be suitable for secure surface pressure determination.
    In order to facilitate the dismantling of the bit and the bit bushing from the bit holder after wear of the bit bushing, the invention is preferably further developed such that the bit holder has a bore opening into the receptacle for the supply of hydraulic oil. If hydraulic oil is pressed in via such a bore, it enters the gap between the bit bushing and the bit holder and exerts a certain lifting force on the bit bushing, at the same time lubricating the adjacent surfaces. In this way, it is easier to remove the chisel or the chisel.
    The chisel assembly according to the invention for a cutting machine with a chisel holder, a rotationally symmetrical chisel and a chisel releasably fixed by surface pressure in a conical receiving the chisel holder against an axial stop and a chisel, wherein the chisel has an axial length of the receptacle for the chisel sleeve exceeding axial length and in the fixed state the edge of the receptacle projecting part of the chisel has an inwardly inclined conical chamfering at its outer diameter, characterized in that the bit rests with an annular stop surface formed on an annular abutment on an annular end face of the chisel and the diameter of the annular collar the outer diameter does not exceed the frontal area. By this measure, the annular collar of the bit over its entire radial extent at the end face of the chisel can come to rest, whereby the forces are optimally introduced into the chisel and tilting is prevented. In order to allow the use of the cutting tool even in salt water, it is preferably provided that the chisel bush made of stainless steel, e.g. Xl7CrNi 16-2 exists.
    The invention will be explained in more detail with reference to an embodiment schematically illustrated in the drawing. 1 shows an illustration of the bit arrangement according to the invention in a preassembled state of the bit bush, FIG. 2 shows a detailed view of FIG. 1, FIG. 3 shows the state of the arrangement after final assembly and FIG. 4 shows a detailed view of FIG. 3.
    In Fig. 1, a chisel assembly according to the invention is denoted by 1, wherein a chisel 2, in which a chisel 3 is held, is inserted into a chisel holder 4. The bit holder 4 may be fixed by means not shown in detail on a cutting tool such as a cutting roller. The chisel holder 4 has a receptacle 5 with a conical inner surface, so that the inner diameter of the receiving bore increases in the direction of the chisel tip. In the receptacle 5 are the chisel 2 and the chisel 3, which is held by a Klippringes 6 in the chisel 2, the chisel 2 having a cooperating with the conical inner surface of the receiving bore conical outer surface. When hammering the chisel sleeve 2 in the direction of arrow 7 occur due to the taper and the dimensions of the chisel holder 4 and the chisel 2 increasingly high surface pressures between the chisel 2 and the chisel holder 4. In Fig. 1 it can be seen that the chisel sleeve 2 has not yet been brought into abutment against the stop 8 of the receptacle 5 in the pre-assembled state shown in Fig. 1. The dimension A in the region of the stop 8, i. the distance between the stop 8 and the
    Counter stop surface of the chisel 2 corresponds to the same dimension A at the edge of the receptacle 5, i. the distance between the edge of the receptacle 5 and the beginning of the conical chamfer 10 of the chisel 2, which in detail according to Pig. 2 is shown in more detail.
    If now, as shown in Figure 3, the chisel 3 is taken along with the chisel 2 further into the chisel holder 4 until between the edge of the receptacle 5 of the chisel holder 4 and the chamfer 10 on the chisel 2 no free measure is no longer present It is also ensured that the chisel sleeve 2 has come into contact with the stop 8 at the bottom of the receptacle 5.
    In Figs. 1 and 3, reference numeral 9 denotes a bore for supply of hydraulic oil, and reference numeral 11 denotes a collar of a chisel.
    权利要求:
    Claims (7)
    [1]
    1. An arrangement for fixing a chisel on a cutting tool of a cutting machine with a chisel holder and a surface pressure in a conical recording of the chisel holder against an axial stop releasably fixed rotationally symmetric chisel, wherein the chisel a axial length of the receptacle for the chisel sleeve exceeding axial Has length, characterized in that in the fixed state, the edge of the receptacle (5) superior part of the chisel bush (2) at its outer diameter an inwardly inclined conical chamfer (10).
    [2]
    2. Arrangement for fixing a chisel according to claim 1, characterized in that the inclination angle of the chamfer (10) against the generatrix of the outer shell of the chisel (2) between 15 and 30 °, preferably 23 °.
    [3]
    3. Arrangement for fixing a chisel according to claim 1 or 2, characterized in that the conical chamfer (10), in the abutting against the axial stop (8) position of the chisel bush (2) begins directly at the edge of the recess (5).
    [4]
    4. Arrangement for fixing a chisel according to claim 1, 2 or 3, characterized in that the surface pressure between the receptacle (5) and the chisel (2) over the entire axial length of the receptacle (5) is set substantially constant and at least 150 N / mm2.
    [5]
    5. Arrangement for fixing a chisel according to one of claims 1 to 4, characterized in that the bit holder (4) has a in the receptacle (5) opening bore (9) for the supply of hydraulic oil.
    [6]
    A bit arrangement according to any one of claims 1 to 5, characterized in that the chisel sleeve (2) is made of stainless steel, e.g. Xl7CrNi 16-2 exists.
    [7]
    7. A chisel assembly for a cutting tool of a cutting machine comprising a chisel and an arrangement for fixing the chisel to a cutting tool according to one of claims 1 to 6, wherein the chisel (3) with an annular collar (11) formed annular abutment surface on an annular end face the chisel sleeve (2) rests and the diameter of the annular collar (11) does not exceed the outer diameter of the end face. Vienna, May 18, 2011 Sandvik Mining and Construction G.m.b.H. by: Haffn godfather
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    同族专利:
    公开号 | 公开日
    WO2012155163A2|2012-11-22|
    CN103534440A|2014-01-22|
    US20140152074A1|2014-06-05|
    AT511531B1|2014-06-15|
    WO2012155163A3|2013-08-22|
    AU2012255655A1|2013-10-31|
    ZA201308017B|2015-08-26|
    GB2510031A|2014-07-23|
    DE112012002139A5|2014-04-24|
    GB201320327D0|2014-01-01|
    PL406243A1|2014-05-12|
    CN103534440B|2016-08-24|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    AT406503B|1995-12-21|2000-06-26|Voest Alpine Bergtechnik|CHISEL ARRANGEMENT FOR A ROUNDING CHISEL|
    US3499685A|1968-08-08|1970-03-10|Kennametal Inc|Pick-type mining bit with support block having rotatable seat|
    US4084856A|1976-02-09|1978-04-18|Fansteel Inc.|Self-retaining sleeve and bit|
    US4337980A|1979-05-21|1982-07-06|The Cincinnati Mine Machinery Company|Wedge arrangements and related means for mounting means, base members, and bits, and combinations thereof, for mining, road working, or earth moving machinery|
    GB8526867D0|1985-10-31|1985-12-04|Todwick Ltd Spencer|Mineral cutting tools|
    US5374111A|1993-04-26|1994-12-20|Kennametal Inc.|Extraction undercut for flanged bits|
    US5370448A|1993-05-17|1994-12-06|Cincinnati Mine Machinery Company|Wedging arrangement for attaching a bit holder to the base member of a mining road working, or earth moving machine|
    AT404969B|1993-12-01|1999-04-26|Voest Alpine Bergtechnik|CHISEL HOLDER WITH A DETACHABLE CHISEL CAN|
    GB9400114D0|1994-01-05|1994-03-02|Minnovation Ltd|Mineral pick box|
    US5415462A|1994-04-14|1995-05-16|Kennametal Inc.|Rotatable cutting bit and bit holder|
    US7097257B2|2004-09-15|2006-08-29|Sandvik Intellectual Property Ab|Cutting tool with nozzle for spraying water on cutter bit|
    US7722127B2|2006-08-11|2010-05-25|Schlumberger Technology Corporation|Pick shank in axial tension|
    US7600823B2|2006-08-11|2009-10-13|Hall David R|Pick assembly|AU2010365393B2|2010-12-17|2015-07-09|Esco Windber Inc.|Holder block assembly for a cutting tool having a hydraulic piston and method|
    DE102015002712A1|2014-03-10|2015-09-10|Bomag Gmbh|Round shank chisel assembly, circlip for a round shank chisel assembly, set with a collet and circlip, and method for securing a shank chisel in a chisel holder|
    EP3263523A1|2016-06-27|2018-01-03|YARA International ASA|Manufacturing plant for ammonium nitrate and process for starting it|
    法律状态:
    2017-01-15| MM01| Lapse because of not paying annual fees|Effective date: 20160518 |
    优先权:
    申请号 | 申请日 | 专利标题
    ATA707/2011A|AT511531B1|2011-05-18|2011-05-18|ARRANGEMENT FOR DETERMINING A MEISSEL|ATA707/2011A| AT511531B1|2011-05-18|2011-05-18|ARRANGEMENT FOR DETERMINING A MEISSEL|
    CN201280023206.5A| CN103534440B|2011-05-18|2012-05-03|Device for fixed cutting tool|
    PCT/AT2012/000126| WO2012155163A2|2011-05-18|2012-05-03|Arrangement for fixing a cutter|
    US14/117,932| US20140152074A1|2011-05-18|2012-05-03|Arrangment for fixing a cutter|
    PL406243A| PL406243A1|2011-05-18|2012-05-03|System for fixing knife|
    AU2012255655A| AU2012255655A1|2011-05-18|2012-05-03|Arrangement for fixing a cutter|
    DE112012002139.8T| DE112012002139A5|2011-05-18|2012-05-03|Arrangement for fixing a chisel|
    GB1320327.8A| GB2510031A|2011-05-18|2012-05-03|Arrangement for fixing a cutter|
    ZA2013/08017A| ZA201308017B|2011-05-18|2013-10-29|Arrangement for fixing a cutter|
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