EP1869286A1 - Kunststoffring zum lösbaren festlegen eines rundschaftmeissels in einer meisselbüchse - Google Patents
Kunststoffring zum lösbaren festlegen eines rundschaftmeissels in einer meisselbüchseInfo
- Publication number
- EP1869286A1 EP1869286A1 EP06721190A EP06721190A EP1869286A1 EP 1869286 A1 EP1869286 A1 EP 1869286A1 EP 06721190 A EP06721190 A EP 06721190A EP 06721190 A EP06721190 A EP 06721190A EP 1869286 A1 EP1869286 A1 EP 1869286A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- plastic ring
- chisel
- section
- cross
- annular groove
- 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
Links
- 229920003023 plastic Polymers 0.000 title claims abstract description 94
- 239000004033 plastic Substances 0.000 title claims abstract description 94
- 239000004952 Polyamide Substances 0.000 claims description 6
- -1 Polyethylene Polymers 0.000 claims description 6
- 239000004698 Polyethylene Substances 0.000 claims description 6
- 239000004743 Polypropylene Substances 0.000 claims description 6
- 229920002647 polyamide Polymers 0.000 claims description 6
- 229920000728 polyester Polymers 0.000 claims description 6
- 229920000573 polyethylene Polymers 0.000 claims description 6
- 229920006324 polyoxymethylene Polymers 0.000 claims description 6
- 229920001155 polypropylene Polymers 0.000 claims description 6
- 230000002787 reinforcement Effects 0.000 claims description 6
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 3
- 229930182556 Polyacetal Natural products 0.000 claims description 3
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229920002530 polyetherether ketone Polymers 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 3
- 239000004800 polyvinyl chloride Substances 0.000 claims description 3
- 229920001169 thermoplastic Polymers 0.000 claims description 3
- 239000004416 thermosoftening plastic Substances 0.000 claims description 3
- 230000037431 insertion Effects 0.000 description 4
- 238000003780 insertion Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
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
- E21C35/19—Means for fixing picks or holders
- E21C35/197—Means for fixing picks or holders using sleeves, rings or the like, as main fixing elements
Definitions
- Plastic ring for releasably securing a round shank chisel in a chisel
- the invention relates to a plastic ring for releasably securing a round shank chisel in a chisel, wherein the inside of the chisel has an annular groove, in which engages the received in an annular groove of the chisel shank resilient plastic ring, wherein the plastic ring is formed slotted and at least one on the outer surface of the Plastic ring projecting and extending over at least part of the circumference of the plastic ring rib has.
- Round shank bits are detachably fastened to clamping heads or clamping rollers so that they can be replaced after wear and tear with as little work as possible.
- easy solubility is the requirement of a good stop of the round shank chisel on the Schremmköpfen or Schremmwalzen, especially since they are exposed to relatively high centrifugal forces and shear forces.
- Another requirement for attaching a pick shank to a chisel is to be insensitive to harsh operating conditions exacerbated by fine particles and coolant, etc. These operating conditions should also not make it difficult to loosen a round shank chisel from his chisel.
- a plastic ring for releasably securing a round shank chisel in a chisel of the type described above is known from AT 004 193 Ul. According to this document, the insertion of the round shank chisel in the chisel by the fact that the depth of the annular groove of the chisel shank exceeds the total thickness of the plastic ring in the region of its rib and the slot has a width such that the plastic ring for mounting in the diameter is so reduced that When inserting the round shank chisel into the chisel bush, the plastic ring does not look beyond the diameter of the chisel shank in the area of the annular groove.
- the holding force is given by the Auffedem of the plastic ring of an outer diameter smaller than or equal to the outer diameter of the round shank chisel on a diameter exceeding this outer diameter. It has been shown that in harsh Schremsm agree the so-called Garkraß: often insufficient. It comes as a result of centrifugal forces 2x1 involuntary removal of a round shank chisel from the chisel, which is favored by inclined walls of the rib and the corresponding purpose designed annular groove.
- the invention has as its object to provide a plastic ring of the type described above, with a simple insertion of a round shank chisel in the chisel and also a simple removal is possible, however, a sufficiently tight fit of the round shank chisel is given during operation in the chisel. So the task is to fulfill two completely contradictory requirements.
- the cross section of the plastic ring has a radially inwardly compressible and outwardly resilient portion which extends at least over part of the circumference of the plastic ring, which portion relative to the other portions of the cross section of the plastic ring From a relaxed starting position with a certain outer diameter larger than the inner diameter of the chisel in a smaller outer diameter corresponding to the inner diameter of the Meiselbüchse, mounting position can be pressed and spring back into the relaxed starting position, either the total thickness of the relaxed plastic ring the depth of Ring groove of the drill collar exceeds or the slot has a width which is dimensioned such that in a reduction of the diameter of the plastic ring to the contact of the side walls of the slot of the radially resilient Ab section of the cross section of the plastic ring protrudes beyond the outer diameter of the drill collar when inserted into the annular groove plastic ring.
- the basic idea of the invention thus lies in the fact that the penetration of the plastic ring, ie of its rib extending over at least part of the circumference, into the groove of the chisel bushing does not take place by a radial springing of the entire plastic ring, but by the fact that the rib itself is resilient is and springs radially over the outer circumference of the plastic ring.
- This can be done in principle in two ways.
- the total thickness of the plastic ring is thicker than the depth of the annular groove of the drill collar, or in that the plastic ring, even if its slot is compressed, at least with its rib still protruding beyond the outer diameter of the drill collar.
- the cross section of the plastic ring is wave-shaped, wherein a radially outwardly projecting wave crest forms the radially inwardly compressible and outwardly resilient portion of the cross section of the plastic ring.
- a further preferred embodiment is characterized in that the plastic ring - which has an approximately cylindrical outer surface - is provided with a radially over the outer surface projecting rib which forms the radially inwardly movable and outwardly resilient portion of the cross section of the plastic ring, wherein expediently the rib is inclined at an angle to the axis of the plastic ring, preferably at an angle between 35 ° and 75 °.
- the radially inwardly compressible and outwardly resilient portion extends only over a portion of the circumference of the plastic ring, preferably over at least 80% of the circumference.
- the plastic ring is expediently formed from one of the following materials: polyamide (PA), polyacetal (POM), thermoplastic polyesters (PET), HT polymers (PEEK, PSU), polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC) ,
- the plastic ring is characterized in that it is formed with a fiber reinforcement, such as a glass fiber reinforcement.
- FIG. 1 illustrating a cross section through a plastic ring
- FIG. 2 a top view
- FIG. 3 a perspective view of the plastic ring according to a first embodiment. 4
- the plastic ring is shown in the installed state.
- Fig. 5 again shows a cross-section of the plastic ring
- Fig. 6 is a plan view of the same according to a second Ausfschreibungsform.
- Fig. 7 illustrates in turn the plastic ring in the installed state.
- a Rundschaf ⁇ tm dealtel 1 has a circumferential on the drill collar 2 annular groove 3, which has a certain depth 4 and a certain width 5.
- this annular groove 3 In the amount of this annular groove 3 is a chisel 6, in which the round shank chisel 1 is inserted, also provided on the inside with an annular groove 7, which, however, has only a smaller width 8 than the annular groove 3.
- a plastic ring 9 is provided, which has according to the embodiment shown in FIGS. 1 to 4 has a wave-shaped cross-section. Approximately in the middle of the width 10 of this plastic ring 9 protrudes a portion 11 - hereinafter also referred to as rib 11 - with its outer diameter 12 on the outer diameter 13 of the two ends of the plastic ring 9 before.
- the plastic ring 9 is, as can be seen from Fig. 2, provided with a slot 14. Its largest thickness 15 projects beyond the depth 4 of the annular groove 3 of the round shank chisel 1, when the plastic ring 9 is in a relaxed position, as shown in the figures, so that it projects beyond the inner diameter 6 'of the chisel.
- the plastic ring 9 has a radially outwardly projecting from an approximately cylindrical annular base body 16 of the plastic ring 9 and obliquely directed towards one end of the plastic ring 9 rib 17 whose wall thickness 18 is kept slightly lower is as the wall thickness 19 of the cylindrical base body 16. Also, this plastic ring 9 is slotted, in order to postpone it on the round shank chisel 1 can. As can be seen from Fig. 7, the ring-cylindrical base body 16 is located on the groove bottom of the annular groove 3 of the round shank chisel 1, and it protrudes the rib 17 in the relaxed state in the annular groove 7 of the chisel. 6
- the thickness 19 of the ring-cylindrical base body 16 of the plastic ring 9 is dimensioned such that upon insertion of the round shank chisel 1 in the chisel 6 compression of the protruding rib 17 to the base body 16 is possible and in this compressed state the depth 4 of the annular groove. 3 of the round shank chisel 1 is not exceeded by the plastic ring 9.
- This spring-loaded state of the rib 17 is illustrated in Fig. 7 with dashed lines.
- the plastic ring 9 is preferably formed from the following materials: polyamide (PA), polyacetal (POM), thermoplastic polyester (PET), hat polymers (PEEK, PSU), polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), optionally with or without fiber reinforcement, in particular glass fiber reinforcement.
- the slot 14 may extend in the axial direction of the plastic ring 9 or even below 45 ° thereto.
- the width 20 of the slot 14 is between 1 and 8 mm, preferably 4 mm.
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Harvester Elements (AREA)
- Percussive Tools And Related Accessories (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Pens And Brushes (AREA)
- Stringed Musical Instruments (AREA)
- Food-Manufacturing Devices (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT06721190T ATE411448T1 (de) | 2005-04-14 | 2006-03-31 | Kunststoffring zum lösbaren festlegen eines rundschaftmeissels in einer meisselbüchse |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0063205A AT501635B1 (de) | 2005-04-14 | 2005-04-14 | Kunststoffring zum lösbaren festlegen eines rundschaftmeissels in einer meisselbüchse |
PCT/AT2006/000130 WO2006108200A1 (de) | 2005-04-14 | 2006-03-31 | Kunststoffring zum lösbaren festlegen eines rundschaftmeissels in einer meisselbüchse |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1869286A1 true EP1869286A1 (de) | 2007-12-26 |
EP1869286B1 EP1869286B1 (de) | 2008-10-15 |
EP1869286B2 EP1869286B2 (de) | 2014-03-05 |
Family
ID=36581480
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06721190.4A Not-in-force EP1869286B2 (de) | 2005-04-14 | 2006-03-31 | Kunststoffring zum lösbaren festlegen eines rundschaftmeissels in einer meisselbüchse |
Country Status (7)
Country | Link |
---|---|
US (1) | US20080308981A1 (de) |
EP (1) | EP1869286B2 (de) |
AT (2) | AT501635B1 (de) |
AU (1) | AU2006235185B8 (de) |
DE (1) | DE502006001838D1 (de) |
WO (1) | WO2006108200A1 (de) |
ZA (1) | ZA200708678B (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130169022A1 (en) * | 2011-12-28 | 2013-07-04 | Sandvik Intellectual Property Ab | Radial and conical tools with compression band retainer |
US9890636B2 (en) * | 2013-05-20 | 2018-02-13 | Schlumberger Technology Corporation | Axially stable retention mechanism for picks and cutting elements |
US9422812B2 (en) | 2014-10-14 | 2016-08-23 | Kennametal Inc. | Cutting tool mounting assembly with elastomeric coated bushing |
US9702251B2 (en) * | 2015-03-17 | 2017-07-11 | Kennametal Inc. | Cutting tool assembly including retainer sleeve with retention member |
EP3812598B1 (de) * | 2019-10-25 | 2021-09-22 | Balluff GmbH | Identifikationselement für ein schaftwerkzeug |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1036535A (en) † | 1964-05-20 | 1966-07-20 | Hall & Pickles Ltd | Improvements in or relating to coal cutter picks and boxes |
US3767266A (en) * | 1970-08-10 | 1973-10-23 | Cincinnati Mine Machinery Co | Resilient retaining means for connecting work tools and work tool holders |
US4346934A (en) * | 1977-06-29 | 1982-08-31 | Kennametal Inc. | Excavating bit |
US4327947A (en) * | 1980-06-17 | 1982-05-04 | General Electric Company | Keeper spring for connecting mining tool to work tool holder |
US4484783A (en) * | 1982-07-22 | 1984-11-27 | Fansteel Inc. | Retainer and wear sleeve for rotating mining bits |
US4575156A (en) * | 1984-03-13 | 1986-03-11 | Fansteel Inc. | Mining block and bit |
AUPM494494A0 (en) * | 1994-04-08 | 1994-05-05 | Cutincoal Pty Limited | Integrated drilling and rock bolting apparatus |
US5503463A (en) * | 1994-12-23 | 1996-04-02 | Rogers Tool Works, Inc. | Retainer scheme for cutting tool |
US5628549A (en) * | 1995-12-13 | 1997-05-13 | Kennametal Inc. | Cutting tool sleeve rotation limitation system |
DE29716692U1 (de) * | 1997-08-22 | 1997-12-18 | Fa. Michael Komotzki, 44319 Dortmund | Meißel zum Abbau mineralischer Stoffe |
US6092960A (en) * | 1998-10-27 | 2000-07-25 | Mccallion; James P. | Concrete joint restraint system |
AT4193U1 (de) * | 1999-09-28 | 2001-03-26 | Tamrock Voest Alpine Bergtech | Einrichtung zum lösbaren festlegen eines rundschaftmeissels in einer meisselbüchse |
WO2001023708A1 (de) * | 1999-09-28 | 2001-04-05 | Voest-Alpine Bergtechnik Gesellschaft M.B.H. | Einrichtung zum lösbaren festlegen eines rundschaftmeissels in einer meisselbüchse |
US6702393B2 (en) * | 2001-05-23 | 2004-03-09 | Sandvik Rock Tools, Inc. | Rotatable cutting bit and retainer sleeve therefor |
-
2005
- 2005-04-14 AT AT0063205A patent/AT501635B1/de not_active IP Right Cessation
-
2006
- 2006-03-31 US US11/918,348 patent/US20080308981A1/en not_active Abandoned
- 2006-03-31 WO PCT/AT2006/000130 patent/WO2006108200A1/de active Application Filing
- 2006-03-31 AU AU2006235185A patent/AU2006235185B8/en not_active Ceased
- 2006-03-31 AT AT06721190T patent/ATE411448T1/de not_active IP Right Cessation
- 2006-03-31 DE DE502006001838T patent/DE502006001838D1/de active Active
- 2006-03-31 EP EP06721190.4A patent/EP1869286B2/de not_active Not-in-force
-
2007
- 2007-10-11 ZA ZA200708678A patent/ZA200708678B/xx unknown
Non-Patent Citations (1)
Title |
---|
See references of WO2006108200A1 * |
Also Published As
Publication number | Publication date |
---|---|
ZA200708678B (en) | 2008-10-29 |
WO2006108200A8 (de) | 2008-01-03 |
WO2006108200A1 (de) | 2006-10-19 |
AT501635A1 (de) | 2006-10-15 |
AU2006235185B8 (en) | 2011-03-10 |
EP1869286B1 (de) | 2008-10-15 |
DE502006001838D1 (de) | 2008-11-27 |
US20080308981A1 (en) | 2008-12-18 |
AT501635B1 (de) | 2007-07-15 |
AU2006235185B2 (en) | 2010-12-16 |
ATE411448T1 (de) | 2008-10-15 |
AU2006235185A1 (en) | 2006-10-19 |
EP1869286B2 (de) | 2014-03-05 |
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