EP2766572A2 - Porte-outil - Google Patents

Porte-outil

Info

Publication number
EP2766572A2
EP2766572A2 EP12778273.8A EP12778273A EP2766572A2 EP 2766572 A2 EP2766572 A2 EP 2766572A2 EP 12778273 A EP12778273 A EP 12778273A EP 2766572 A2 EP2766572 A2 EP 2766572A2
Authority
EP
European Patent Office
Prior art keywords
diameter
insert
bit
chisel
region
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Withdrawn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
EP12778273.8A
Other languages
German (de)
English (en)
Inventor
Thomas Allgaier
Thomas Lehnert
Markus Roth
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.)
Wirtgen GmbH
Betek GmbH and Co KG
Original Assignee
Wirtgen GmbH
Betek GmbH and Co KG
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 Wirtgen GmbH, Betek GmbH and Co KG filed Critical Wirtgen GmbH
Publication of EP2766572A2 publication Critical patent/EP2766572A2/fr
Withdrawn legal-status Critical Current

Links

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
    • 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
    • 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

Definitions

  • the invention relates to a bit holder for a road milling machine or the like with a base part on which a drill collar and a projection are formed, wherein the approach has a bit receptacle, and wherein the bit receptacle is formed of a hard material, bush-shaped insert.
  • Such a bit holder is known from DE 196 30 642 A1.
  • a through hole is incorporated in the bit holder, which has a diameter-expanding bore portion.
  • a bush-shaped insert made of hard metal is used in this bore section.
  • This insert forms a tool holder, into which a round shank chisel can be inserted.
  • the pick has a chisel head and a chisel shaft connected to it.
  • the chisel shaft carries a clamping sleeve, which braces with its outer circumference in the Mberichtei- recording of the insert.
  • the chisel head is over a wear protection supported against the insert.
  • the clamping sleeve forms a pivot bearing, which fixes the round shank chisel in the axial direction, but it remains freely rotatable about its central axis.
  • the round shank chisel rotates while its chisel head loops on the wear shield. This creates a rotating wear.
  • the wear shields are usually designed so that they guarantee a safe support of the chisel head over the entire life of the chisel.
  • bit receptacle is formed as a stepped bore having a first and a second diameter portion, wherein the first diameter portion has a larger inner diameter than the second diameter portion.
  • the first diameter region can directly receive a section of the shaft bit, and with this also form a rotary bearing without the interposition of a wear protection sleeve.
  • the second diameter portion may also be used to support the bit, receiving a second shank portion of the bit, which then carries a simple securing element which is supported within the second diameter portion. In this way, a Stauerilinde between the first and the second diameter portion is created, which guarantees a stable tilt support of the shank bit with little effort.
  • the first diameter region may form an insertion opening for the chisel to be mounted.
  • the first diameter region can pass directly or via a tapering section, for example a conical insertion bevel, into the insertion opening.
  • the first and the second diameter region are merged into one another by means of a rounded or conical taper.
  • a voltage-optimized transition is created.
  • this taper offers the opportunity to slide on a fuse element, and to compress this radially inwardly to give it a clamping effect, which can then be used to fix the shank bit.
  • the chisel assembly can be further simplified.
  • the inner diameter of the first diameter range is selected between 16 mm and 24 mm.
  • This diameter range is sufficiently dimensioned for the upcoming loads, and it can in particular reliably absorb the transverse forces acting transversely to the center axis of the shank bit, which effect a bearing engagement, without fear of material deformations.
  • the inner diameter of the second diameter range should be between 12 mm and 20 mm. This ensures a stress-optimized removal of the bending forces in the chisel shaft.
  • the diameter ratio: diameter of the first diameter range to diameter of the second diameter range is preferably selected in the range between 1, 1 and 1, 4, so that too strong cross-sectional reductions and the associated risk of notch stress fracture is taken into account.
  • the insert may have a bearing surface which extends radially to the central longitudinal axis of the insert and which rotates annularly around the inlet opening of the first diameter region.
  • the support surface can be used for direct support of the chisel head of a shank chisel, which can be dispensed with the intermediate layer of a wear protection disc. Then the chisel head grinds directly on the insert during operation.
  • the fact that the chisel head is usually made of a softer material than the insert, the desired faster wear of the shank bit compared to the bit holder will arise.
  • the insert has an abutment surface with which it is supported on a stop of the attachment in such a way that the support surface merges flush into an annular surface of the attachment adjoining the support surface.
  • This annular surface may be arranged in particular radially to the central longitudinal axis of the insert.
  • the bit receptacle is incorporated as a through hole in the insert, and opens into a bore portion of the neck, which forms a Austreibö réelle, and that the inner diameter of the second diameter ser Schemees is smaller than the inner diameter of the bore portion, then on the one hand by the Austreibö réelle and the through hole of the insert of the shank bit can be easily removed.
  • the insert can also be disassembled through the expulsion opening in case of damage.
  • Figure 1 shows a shank chisel in side view and partly in section
  • Figure 2 in side view a combination consisting of a bit holder and the shank bit shown in Figure 1;
  • FIG. 3 shows a detail of the representation according to FIG. 2 in vertical section
  • FIG. 4 shows a securing element in plan view
  • Figure 5 shows the fuse element according to Figure 4 in side view and in
  • Figure 6 shows the securing element according to Figures 4 and 5 in a perspective view
  • Figure 7 shows a further embodiment variant of a safety element in plan view
  • FIG. 8 shows the securing element according to FIG. 7 along the sectional profile marked Vill-Vlil in FIG. 7;
  • Figures 9 and 10 the securing element according to Figures 7 and 8 in perspective;
  • Figure 11 shows an insert for mounting in the bit holder according to Figures 2 and 3 in side view and in Vertikaisacrificing;
  • Figure 12 shows an alternative embodiment of a shank bit side view
  • FIG. 13 is a securing element for the shank bit gem.
  • FIG. 12 shows a side view and a section along the section line marked XIII-XIII in FIG. 14, and
  • FIG. 14 shows the securing element according to FIG. Fig. 13 in plan view.
  • FIG. 1 shows a shank bit 10 with a drill shank 11 and a chisel head 12 formed thereon.
  • the chisel shank 11 is designed as a stepped shank and has a first cylindrical section 11.1, which merges via a frustoconical transition section 11.2 into a second cylindrical section 11.3. in the region of the second cylindrical portion 11.3, a securing receptacle 11.4 is provided in the form of a circumferential groove. End of this fuse holder is 11.4 bounded by a collar 11.5.
  • the first cylindrical section 11. 1 directly adjoins a support surface 12. 5 of the chisel head 12 via a rounding transition or alternatively via a frustoconical transition section.
  • the support surface 12.5 is annular and is formed by a collar-shaped support portion 12.1.
  • the chisel head 12, starting from the support section 12.1, merges via a taper 12.2 with a concave geometry into a discharge surface 12.3.
  • the deflecting surface 12.3 is embodied in the form of a truncated cone, but may also be designed, for example, cylindrically or concavely.
  • the drill collar 11 facing away from the end of the chisel head 12 carries a Schneideiement 13 in a Schneideiement recording 12.4.
  • the cutting element 13 consists of a hard material, such as hardmetal, and is soldered into the cutting element holder 12.4.
  • the component extensions of the shank bit 10 are applied in the direction of the central longitudinal axis M of the shank chisel 10.
  • the chisel head 12, including the cutting element 13 has a head length A which lies in the range between 35 mm and 60 mm.
  • the first cylindrical portion 11.1 has an extension B in the direction of the central longitudinal axis M of the cutter shank 30 mm. In the present case an extension of 15 mm is selected.
  • the length of the transition section is marked C, and should be ⁇ 10 mm. In the present case an extension of about 3 mm is selected.
  • the length of the second cylindrical portion 11.3 is plotted with D, and has an extension in the direction of the central longitudinal axis M in the range between 10 and 40 mm.
  • the length of the end portion E comprising the securing receptacle 11.4 and the collar 11.5, should be at least 3 mm. In the present case, a dimension of 7 mm is selected, wherein the groove width F of the fuse holder 11.4 is approximately 3 mm.
  • the outer diameter a of the support surface 12.5, the diameter b of the first cylindrical portion 11.1 and the diameter c of the second cylindrical portion 11.3 are further dimensioned. In this case, the diameter b of the first cylindrical sections 11.1 is in the range between 18 mm and 30 mm.
  • the diameter c of the second cylindrical portion 11.3 is selected in the range between 14 mm and 25 mm.
  • the outer diameter a of the support surface 12.5 is presently between 30 mm and 46 mm, and is particularly preferably selected in the range between 40 mm and 44 mm.
  • FIG. 2 shows a bit holder 40 which is used to receive the shank bit 10 according to FIG.
  • the chisel holder 40 has a Basisisteii, to which a projection 41 and a plug-in projection 42 are integrally formed.
  • the projection 41 is provided with a cylindrical inner receptacle 44 into which an insert 20, consisting of hard material, in particular of hard metal, is inserted.
  • the insert 20 is in the form of a bush, and has a cylindrical outer geometry, which is adapted to the inner diameter d ' of the inner receptacle 44 that results in the mounting of the insert 20 in the chisel 40 an interference fit (interference fit).
  • the insertion movement of the insert 20 into the inner receptacle 44 is limited by means of a paragraph.
  • the heel is formed in the transition region of the inner receptacle 44 to a discharge opening 43 formed as a bore.
  • the inner receptacle 44 and the Austreibö réelle 43 are coaxial with each other.
  • the insert 20 has a stepped bore, which has a first diameter portion 21 and a second diameter portion 23.
  • the two diameter portions 21, 23 are connected via a taper 22 into each other.
  • the taper 22 has a frustoconical geometry.
  • the inner diameter c 'of the second diameter region is smaller than the inner diameter of the expulsion opening 43. This results in an expulsion shoulder on the insert 20.
  • the insert 20 By means of a tool inserted through the expulsion opening 43 and attached to the expelling shoulder the insert 20 can be pushed out of the bit holder 40 as needed.
  • the design of the insert 20 is more detailed.
  • the outer geometry of the insert 20 is formed by a mating surface 24, which, as described above, forms a snug fit with the inner receptacle 44.
  • Transverse to the central longitudinal axis of the insert 20 of the insert 20 has a lower abutment surface 25 which abuts in the mounted state on a mating surface of the inner receptacle 44, as shown in FIG.
  • an exact assignment of the insert 20 to the chisel 40 is made possible.
  • the first diameter portion 21 of the insert 20 has a diameter b '
  • the second diameter portion 23 has a diameter c'.
  • the diameters b 'and c' are adapted to the diameters b and c of the first and second cylindrical sections 11.1 and 11.3 of the drill shank 22. In this case, the assignment of the shank of the shank 10 to the insert 20 is ensured in such a manner with little play that the shank chisel 10 remains freely rotatable about its central longitudinal axis M.
  • the extent of the first diameter region 21 in the direction of the central longitudinal axis M is B ', wherein, as Figure 3 clearly shows, this extension B' is greater than the extension b of the first cylindrical portion 1.1.
  • the extension of the second diameter region 23 is marked with D 1 in FIG. 11 and the extent of the tapering region is marked C. In this case, the extension D 'is selected so that the drill collar 11 is completely received within the insert 20, as Figure 3 reveals.
  • a securing receptacle 11.4 in the form of a circumferential groove is provided in the region of the drill collar 11. In this groove, a securing element 30 is received, which is detailed in Figures 4 to 6.
  • the securing element 30 has a partial annular circumferential clamping part 32, to which the mounting portions 33 adjoin radially outward, which are presently designed in the form of a chamfer as cross-sectional reductions.
  • the cross-sectional reductions are interrupted by recesses 34, the recesses 34 extending into the clamping part 32.
  • krailenförmige each other at an angle ⁇ of preferably 50 ° to 70 °, in this case 60 ° spaced, radially outer holding portions 39 are formed in the form of arcuate areas.
  • These convex arc regions serve to tension the securing element 30 in the second diameter region 23 of the insert 20, as FIG. 3 shows.
  • the SpannendeÜ 32 surrounds a Laif) gerage 31, which forms a pivot bearing together with the groove bottom of the fuse holder 11.4.
  • This bearing seat 31 opens into a slot which forms an insertion opening 36.
  • the insertion opening 36 is bounded by two edges 35, which open into insertion chamfers 37.
  • the Ein Industriesfasen 37 are arranged so that they expand the insertion opening 36.
  • the bearing receptacle 31 has an inner diameter 38.1, and the fastening portions 33 define an outer diameter 38.2.
  • the securing element 30 has an overall height 38.4, which is smaller than the width of the groove-shaped securing receptacle 11.4.
  • the fastening portions 33 20 extend over a section height 38.5 and define an angle of inclination ⁇ .
  • FIGS. 7 to 10 show a further embodiment variant of a securing element 30.
  • the securing element 30 again has a bearing receptacle 31, which is radially accessible via an insertion opening 36.
  • the insertion opening 36 is bounded by an edge 35, wherein the edge 35 merges into Ein Industriesfasen 37.
  • the securing element 30 is produced in the form of a stamped and bent part, in which no machining or similar forming work is required for the formation of the fastening section 33 angled with respect to the clamping part 32.
  • a disc-shaped cross-section is first punched out for the production of the securing element 30, and this then deformed in a bending step in the design shown in Figure 8.
  • the outer diameter 38.2 of the securing element 30 is arranged concentrically to the wall (inner diameter 38.1) forming the bearing receptacle 31.
  • the outer contour of the securing element 30 can either be reworked or the diecut is already designed so that after the final bending step the concentration is reached.
  • FIG. 8 further shows that the thickness d of the securing element 30 is approximately the same both in the region of the tensioning part 32 and in the region of the fastening section 33.
  • the fastening portion 33 forms on its underside a convex curvature with the radius R, so that there is a surface inclined with respect to the central longitudinal axis of the securing element 30, which facilitates mounting of the securing element 30 in the insert 20 of the bit holder 40, as will be described in more detail below is explained.
  • the securing element 30 is concavely arched. In this way, linear or narrow band-shaped bearing areas 38.7, which serve for better rotational behavior of the securing element 30 relative to the shank bit 10, as will be explained in more detail below.
  • the Recesses 34 are again part-circular incorporated into the mounting portion 33 and thereby extend into the region of the clamping part 32nd
  • the securing element 30 For mounting the securing element 30 on the shank bit 10, this is first placed with the Ein Manufacturingfasen 37 on the groove bottom of the fuse holder 11.4. Subsequently, by a radial pressure of the drill collar 11 are pushed into the bearing receptacle 31, in which case the Wheeliagerung between the Nutgmnd the fuse holder 1 .4 and the bearing seat 31 is formed. When inserting the chisel shank 11, the securing element 30 expands radially, and after the chisel shaft 11 has passed the edges 35, the securing element 30 snaps back into its original shape so that the chisel shaft 11 engages in the bearing receptacle 31.
  • the securing element 30 is achieved with the shank bit 10.
  • the unit consisting of shank bit 10 and securing element 30 can now be inserted into the insert 20 of the chisel holder 40.
  • the free end of the cutter shank 11 facing fastening portions 33 are attached to the taper 22. Due to the inclined design of the fastening portions 33, the securing element 30 is compressed radially inward during insertion of the shank bit 10, and can thus be inserted into the second diameter region 23. In this case, the securing element 30 braces against the inner wall of the second diameter region 23. The deformation of the securing element 30 is such that the free rotation of the cutting shaft 11 is maintained.
  • the securing element 30 is reliably supported in the second diameter region 23 with its holding sections 39 in the region of the fastening sections 33.
  • the insertion movement of the shank bit 10 into the insert 20 is limited to the support surface 12.5 of the chisel head 12. This strikes against the support surface 26 of the insert 20, as shown in FIG.
  • the shank bit 10 rotates in the bearing seat 31.
  • the chisel head 12 grinds with its support surface 12.5 on the support surface 26 of the insert 20. Since the insert 20 consists of a hard material, and the chisel head 12 made of a relatively softer material is, the chisel holder 40 only slight wear. In contrast, the shank bit 10 is worn relatively stronger in the region of its support surface 12.5.
  • there is a wear system in which the expensive bit holder 40 is worn less than the shank bit 10.
  • a plurality of shank bits 10 can be moved on a Mberichteihalter 40 until it reaches its wear limit.
  • the axial length of the first cylindrical portion 11.1 is smaller than the axial longitudinal extent of the first diameter portion 21.
  • the axial extension of the Nachsetzraums NR be selected in the range between 4 mm to 20 mm. Given the given geometric conditions, it is possible to approach the lower limit of 4 mm in a rather soft substrate. For hard floor coverings, longer lengths are more suitable for the Nachsetzraum NR. In road construction, mixed concrete and asphalt must be processed, a length of Nachsetzraums 7 mm to 20 mm has been found to be suitable.
  • the second diameter portion 23 of the insert 20 is also dimensioned in its axial extent so that the securing element 30 compensates for the length wear of the insert 20 and the chisel head 12 can slide on the inner wall of the second diameter portion 23 in the axial direction. Accordingly, therefore, the axial length of the second diameter region must be adapted to the dimensioning of the Nachsetzraums NR.
  • the second diameter region 23 must have at least one axial length of 4 mm to 20 mm plus twice a fixing length for the securing element (position of the securing element 30 in the unworn and worn state of the bit holder 40).
  • the fixation length should be at least 2 mm.
  • the end-side collar 11. 5 can be set in the region of an opening section of the expulsion opening 43.
  • the axial length of the opening portion is to be dimensioned accordingly.
  • the drill collar 1 slides with its first cylindrical section 11.1 on the associated inner surface of the first diameter section 11.1. rich 21. Since the insert 20 also consist of a hard material and the chisel shaft 11 made of a softer material, there is only a slight wear of the insert 20 and thus of the chisel holder 40 causes.
  • the securing element 30 according to FIGS. 7 to 10 is supported with its bearing areas 38. 6 and 38. 7 in the form of a line or ring with a small radius of travel against the groove walls of the securing receptacle 11. 4, as a result of which good rotational behavior is achieved. After the shank bit 10 is worn, it can be disassembled.
  • an expelling force is introduced into the free end of the drill collar 11 in the region of the collar 11.5 by means of a suitable expelling tool.
  • the shank bit 10 slides with its securing element 30 over the second diameter region 23 until it rebounds radially in the region of the first diameter region 21. Then the shank bit 10 can be removed freely.
  • FIGS. 12 to 14 show an alternative embodiment variant of the invention.
  • the design of the shank bit 10 corresponds in its basic structure to the shank bit 10 of FIG. 1.
  • the Schaftm adoptedei 10 gem. Fig. 12 can gem with the retaining ring 30.
  • FIGS. 13 and 14 in the insert 20 of the chisel holder 40 gem. Fig. 2, 3 and 11 are mounted. It will be discussed below to avoid repetition on the distinctive design features. Incidentally, reference is made to the above statements.
  • the shank bit 10 with chisel shank 11 and chisel head 12 is again manufactured as a press part or alternatively as a turned part.
  • the chisel head 12 has the support section 12.1 with the support surface 12.5.
  • the support section 12.1 passes over a convex rounding transition into the support surface 12.5.
  • the support section 12.1 has an outer diameter e in the range between 40 mm and 45 mm.
  • the diameter a of the support surface 12.5 is selected in the range between 36 mm and 42 mm. In this diameter ratios, ie more generally at a diameter jump from 1 to 1, 3 (diameter e / diameter a) a strong deformation in the region of the support portion 12.1 is achieved during cold extrusion. By this material deformations a particularly tough composite material is achieved with good strength properties.
  • the chisel head 2 again has, subsequent to the support section 12.1, a concave taper 12.2, which merges into the truncated cone-shaped discharge surface 12.3. End side, a cutting element holder 12.4 is formed. In this a cutting element (- 13 - see above) can be soldered.
  • the support surface 12.5 merges via a frustoconical transition section into the first cylindrical section 11.1.
  • the extent of the first cylindrical portion 11.1 in the direction of the central longitudinal axis M is chosen to be significantly shorter than in the embodiment of FIG. 1.
  • the length B is presently 9 mm. This represents a sufficient dimensioning for a diameter b of 19.8 mm for street milling applications.
  • the axial length of the Nachsetzraums NR is increased.
  • a particularly suitable wear length for the Nachsetzraum NR of about 15 mm to 18 mm results for road milling applications with mixed coatings (asphalt / concrete).
  • the second cylindrical portion 11.3 has an extension D in the direction of the central longitudinal axis M of 21, 6 mm and thus holds the securing receptacle 11.4 for road tofräsanassembleen at a sufficient distance from the support surface 12.5.
  • the diameter c of the second cylindrical portion 11.3 is 16.5 mm.
  • the fuse holder 1.4 is designed with a width F of 4.5 mm, thus slightly wider than in FIG. 1 and matched to the fuse element 30 as shown in FIG. 13 and 14.
  • the end collar 11.5 has a thickness of 3 mm and is thus sufficiently stable for road milling applications.
  • the securing element 30 has, as the base body, the stamped and bent part shown in FIGS. 7 to 10, with the difference that the recesses 34 are not recessed into the clamping part 32. With regard to the otherwise matching features, reference is made to the above statements.
  • This base body is provided on its surface with a layer 50 which has a lower hardness than the main body.
  • the layer 50 consists of a plastic material.
  • the layer 50 consists of a plastic material of polyurethane or a composite material containing polyurethane. For reasons of manufacturing simplicity and to create an intimate connection to the main body, the layer 50 is molded onto the base body by injection molding.
  • the layer 50 has two coating areas 51 and 54.
  • the coating areas 51, 54 are on the concavely curved upper side or the conical Vexen undersides of the base body arranged in the region of the recesses 34, the coating regions 51, 54 connected to each other via connecting portion 55 such that the recesses 34 are completely filled.
  • the radially outer arc regions of the layer 50 are flush over into the convex arc regions of the holding sections 39.
  • the layer 50 may also project radially beyond the holding portions 39.
  • the two coating regions 51 and 54 each form a bearing surface 52, 53 which rotate in the form of a partial ring around the central longitudinal axis of the securing element 30.
  • the two bearing surfaces 52, 53 are radial and parallel to each other. They serve to rest on the groove walls of the fuse holder 11.4, wherein the Axtalspiei described above must be complied with. To achieve a tilt-free run, the axial clearance should be in the range between £ 0.2 mm and ⁇ 4 mm.
  • the two bearing surfaces 52, 53 complete the precisely fitting pivot bearing.
  • the layer 50 increases the rigidity, in particular the torsional strength of the base body, so that this rigid composite body reliably fixes the shaft bit 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Jigs For Machine Tools (AREA)
  • Road Repair (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Abstract

L'invention concerne un porte-outil pour une fraiseuse routière ou équivalent, comprenant un élément de base sur lequel sont formés une queue d'outil et une embase, l'embase présentant un logement d'outil, et le logement d'outil étant formé par un insert qui est en forme de douille et est constitué d'un matériau dur. Un tel porte-outil permet, grâce à un petit nombre de pièces, de contribuer à un bon comportement en rotation de l'outil et de garantir le soutien stable de cet outil si, à cet effet, le logement d'outil est conçu comme un orifice étagé présentant une première et une deuxième zone diamétrale, la première zone diamétrale ayant un diamètre interne supérieur à celui deuxième zone diamétrale.
EP12778273.8A 2011-10-11 2012-10-11 Porte-outil Withdrawn EP2766572A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011054384A DE102011054384A1 (de) 2011-10-11 2011-10-11 Meißelhalter
PCT/EP2012/070145 WO2013053812A2 (fr) 2011-10-11 2012-10-11 Porte-outil

Publications (1)

Publication Number Publication Date
EP2766572A2 true EP2766572A2 (fr) 2014-08-20

Family

ID=47076177

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12778273.8A Withdrawn EP2766572A2 (fr) 2011-10-11 2012-10-11 Porte-outil

Country Status (5)

Country Link
US (1) US9399914B2 (fr)
EP (1) EP2766572A2 (fr)
CN (1) CN104246128B (fr)
DE (1) DE102011054384A1 (fr)
WO (1) WO2013053812A2 (fr)

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CN114026290A (zh) * 2019-06-28 2022-02-08 宝马格有限公司 刀架系统、铣刨辊和地面铣刨机

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DE102014106484A1 (de) * 2014-05-08 2015-11-12 Betek Gmbh & Co. Kg Schaftmeißel bzw. Befestigungsanordnung für einen Schaftmeißel
DE202015009200U1 (de) * 2015-11-06 2016-12-23 Betek Gmbh & Co. Kg Werkzeugsystem
USD778702S1 (en) * 2016-01-11 2017-02-14 Supplier Of Solutions, Llc Tool support adapter block
DE102016108808A1 (de) 2016-05-12 2017-11-16 Betek Gmbh & Co. Kg Meißel mit einem Stützelement mit einem Zentrieransatz
CN108487025A (zh) * 2018-05-17 2018-09-04 苏州五元素机械制造有限公司 一种铣刨凿刀体
KR102185345B1 (ko) * 2019-09-10 2020-12-01 황일규 노면파쇄기의 비트 유닛
KR102158269B1 (ko) * 2019-10-16 2020-09-21 황일규 노면파쇄기의 비트 유닛

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US5415462A (en) * 1994-04-14 1995-05-16 Kennametal Inc. Rotatable cutting bit and bit holder
US20070080575A1 (en) * 2005-10-12 2007-04-12 Sollami Jimmie L Bit block with shroud protector

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WO2013053812A3 (fr) 2014-03-27
US9399914B2 (en) 2016-07-26
US20150345291A1 (en) 2015-12-03
DE102011054384A1 (de) 2013-04-11
WO2013053812A2 (fr) 2013-04-18
CN104246128A (zh) 2014-12-24
CN104246128B (zh) 2018-08-10

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