EP3251809B1 - Mécanisme de maintien d'outil de coupe - Google Patents

Mécanisme de maintien d'outil de coupe Download PDF

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Publication number
EP3251809B1
EP3251809B1 EP17169514.1A EP17169514A EP3251809B1 EP 3251809 B1 EP3251809 B1 EP 3251809B1 EP 17169514 A EP17169514 A EP 17169514A EP 3251809 B1 EP3251809 B1 EP 3251809B1
Authority
EP
European Patent Office
Prior art keywords
cutting tool
holding mechanism
base
tool holding
limiting
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.)
Active
Application number
EP17169514.1A
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German (de)
English (en)
Other versions
EP3251809A1 (fr
Inventor
Chun-Li Chiang
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.)
Everpads Co Ltd
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Everpads Co Ltd
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 Everpads Co Ltd filed Critical Everpads Co Ltd
Publication of EP3251809A1 publication Critical patent/EP3251809A1/fr
Application granted granted Critical
Publication of EP3251809B1 publication Critical patent/EP3251809B1/fr
Active legal-status Critical Current
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Classifications

    • 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
    • B28D1/18—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by milling, e.g. channelling by means of milling tools
    • B28D1/186—Tools therefor, e.g. having exchangeable cutter bits
    • B28D1/188—Tools therefor, e.g. having exchangeable cutter bits with exchangeable cutter bits or cutter segments
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
    • E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
    • E01C23/08—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for roughening or patterning; for removing the surface down to a predetermined depth high spots or material bonded to the surface, e.g. markings; for maintaining earth roads, clay courts or like surfaces by means of surface working tools, e.g. scarifiers, levelling blades
    • E01C23/085—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for roughening or patterning; for removing the surface down to a predetermined depth high spots or material bonded to the surface, e.g. markings; for maintaining earth roads, clay courts or like surfaces by means of surface working tools, e.g. scarifiers, levelling blades using power-driven tools, e.g. vibratory tools
    • E01C23/088—Rotary tools, e.g. milling drums

Definitions

  • the present disclosure relates to a cutting tool holding mechanism according to the preamble of claim 1.
  • the present disclosure relates to a cutting tool holding mechanism applied to a road milling machine.
  • Such a cutting tool holding mechanism is known from TWM512456U.
  • a cutting tool holding mechanism is a device which is disposed at a road milling machine for holding the cutting tool.
  • the cutting tool will receive a huge impact due to the high resistance occurred in construction, and the cutting tool will be damaged even if it is made of the toughness material.
  • the prior cutting tool holding mechanism includes a base and a clamping portion.
  • the handle is passed through the base and the clamping portion to be installed in the cutting tool holding mechanism.
  • the clamping portion and the base are fastened by screws or wedges, and the cutting tool is secured by the base and the clamping portion.
  • the shapes of the handle, the clamping portion and the base must be coordinated accurately; consequently, the design of the modes is complex.
  • the mechanical strength is lower when the cutting tool holding mechanism is made by several components.
  • the reaction force applied on the cutting tool is parallel to a central axis of the cutting tool, that is, the force applied along the vertical direction; accordingly, the connecting surface between the base and the clamping portion is parallel to a horizontal direction which is perpendicular to the central axis of the cutting tool in order to provide enough supporting force.
  • a milling machine will include a plurality of cutting tool holding mechanisms disposed at a milling drum.
  • the screws are inserted into the cutting tool holding mechanism along the horizontal direction, and the separating operation of the cutting tool holding mechanism will be affected by other cutting tool holding mechanisms. As a result, the cutting tool is not easily to be changed.
  • the cutting tool holding mechanism has enough clamping force, it still has the disadvantage of high manufacturing cost. Furthermore, it spends much time and money to change the cutting tool.
  • a cutting tool holding mechanism includes a base, a handle and at least one locking assembly.
  • the base includes a receiving groove, at least one limiting groove and at least one limiting hole.
  • the receiving groove is depressively disposed in the base.
  • the at least one limiting groove is depressively disposed in the base and communicated with the receiving groove.
  • the at least one limiting hole is disposed at the base and communicated with the limiting groove.
  • the handle which is abutted against the base, includes a sleeved portion disposed inside the receiving groove.
  • the sleeved portion includes at least one butting portion, wherein the butting portion is located at an intersection of the receiving groove and the limiting groove when the sleeved portion is disposed inside the receiving groove.
  • the at least one locking assembly includes a locking screw, a locking member and a guiding bolt.
  • the locking screw includes a head portion and a screwing portion.
  • the screwing portion is for protruding into the limiting groove.
  • the locking member which is received inside the limiting groove includes a screwed hole and a guiding groove.
  • the screwed hole is for securing the screwing portion.
  • the guiding groove is disposed at one side of the locking member, and the guiding groove is aligned with the limiting hole when the locking member is disposed inside the limiting groove.
  • An extending direction of the guiding groove is parallel to a central axis of the limiting groove.
  • the guiding bolt is disposed in the limiting hole and abutted against the guiding groove to inhibit the locking member from rotating.
  • the locking member is for moving along the central axis to push against the butting portion.
  • the base includes an abutting portion which comprises a plurality of abutting surfaces circularly distribute at the abutting portion
  • the handle includes a plurality of positioning surfaces, and a number of the positioning surfaces is corresponding to a number of the abutting surfaces such that the handle can be positioned on the base.
  • the receiving groove is surrounded by the abutting surfaces.
  • an angle contained between the limiting groove and a virtual horizontal-surface is smaller than 180 degrees.
  • the receiving groove passes through the bass.
  • the limiting groove passes through the base.
  • the locking assembly further includes two covers.
  • the covers are disposed at two sides of the limiting groove, respectively, such that the limiting groove is closed.
  • the base includes a pin hole.
  • the sleeved portion includes an anchor hole which is corresponding to the pin hole, and the pin hole and the anchor hole are configured to allow a pin to insert so as to secure the handle.
  • a number of the limiting grooves is two.
  • a number of the limiting holes is two.
  • a number of the butting portions is two. Two limiting groove and two limiting hole are disposed at two corresponding sides of the receiving groove, respectively, and two butting portion are depressively disposed at two corresponding sides of the sleeved portion, respectively.
  • a number of the locking assemblies is two, and two locking assemblies are corresponding to two limiting grooves, respectively.
  • the at least one locking assembly further includes a packing ring comprising a through hole.
  • the screwing portion passes through the through hole to protrude into the limiting groove.
  • Fig. 1 shows an exploded view of a cutting tool holding mechanism 100 according to one embodiment of the present disclosure.
  • Fig. 2 shows a schematic view of a combination state of the cutting tool holding mechanism 100 of Fig. 1 .
  • the cutting tool holding mechanism 100 includes a base 200, a handle 300 and a locking assembly 400.
  • the base 200 includes an abutting portion 210, a receiving groove 220 and a limiting groove 230.
  • the abutting portion 210 includes a plurality of abutting surfaces 211, and a number of the abutting surfaces 211 and a position and a shape of each of abutting surfaces 211 are not limited thereto.
  • the receiving groove 220 depressively disposed at the base 200.
  • the limiting groove 230 is disposed at one side of the receiving groove 220 and is communicated with the receiving groove 220.
  • a limiting hole 231 is disposed at the base 200 to correspond to the limiting groove 230.
  • the handle 300 is abutted against the base 200.
  • the handle 300 includes a sleeved portion 310 and a plurality of positioning surfaces 301.
  • the sleeved portion 310 is received inside the receiving groove 220.
  • the number of the positioning surfaces 301 is corresponding to the number of the abutting surfaces 211, and the shapes of the positioning surfaces 301 are corresponding to the shapes of the abutting surfaces 211. Accordingly, the positioning surfaces 301 can provide positioning function to position the handle 300 on the base 200 when the sleeved portion 310 is inserted into the receiving groove 220.
  • the abutting surfaces 211 are annularly distributed at the base 200 to surround an opening of the receiving groove 20; thus, the handle 300 which is inserted into the receiving groove 220 can be auto-centering.
  • the base 200 includes a pin hole 240, and the sleeved portion 310 includes an anchor hole 312 corresponding to the pin hole 240.
  • a pin (not shown) can be inserted into the pin hole 240 and the anchor hole 312 to secure the handle 300.
  • the sleeved portion 310 includes a butting portion 311.
  • the butting portion 311 is located at an intersection of the receiving groove 220 and the limiting groove 230.
  • the locking assembly 400 is disposed inside the limiting groove 230 to push against the handle 300.
  • the locking assembly 400 includes a packing ring 410, a locking screw 420, a locking member 430, a guiding bolt 440 and two covers 450.
  • the packing ring 410 has a through hole 411 which is configured for the locking screw 420 to pass through.
  • the locking screw 420 includes a head portion 421 and a screwing portion 422.
  • the head portion 421 is abutted against the packing ring 410.
  • the screwing portion 422 is inserted the through hole 411 to protrude into the limiting hole 231.
  • the locking member 430 is received inside the limiting groove 230 and includes a screwed hole 431 and a guiding groove 432.
  • the screwed hole 431 is for securing the screwing portion 422.
  • the guiding groove 432 is disposed at one side of the locking member 430, and an extension direction of the locking member 430 is parallel to a central axis of the limiting groove 230.
  • the guiding groove 432 is aligned with limiting hole 231 when the locking member is disposed inside the limiting groove 230, and the guiding bolt 440 is disposed inside the limiting hole 231.
  • the head portion 421 of the locking screw 420 is limited at one side of the packing ring 410.
  • the locking member 430 is moved along the extension direction due to the limitation of the guiding bolt 440.
  • the locking member 430 will be moved toward the head portion 421 along the central axis when the locking screw 420 is fastened.
  • the limiting groove 230 runs through the base 200, and the locking assembly 400 can include two covers 450 for closing two openings of the limiting groove 230, respectively; thus, that foreign materials fall into the limiting groove 230 can be prevented.
  • Fig. 3 shows a schematic view of a handle 300 of Fig. 1 .
  • a shape of the butting portion 311 is corresponding to the moving direction of the locking member 430. That is, one side of the butting portion 311, which faces toward the locking member 430, is wide and thin. A thickness of the butting portion 311 is incrementally increased along the moving direction of the locking member 430.
  • Fig. 4 shows a cross-sectional view of the cutting tool holding mechanism 100 taken along line 4-4 of Fig. 2 .
  • Fig. 5 shows a cross-sectional view of the cutting tool holding mechanism 100 taken along line 5-5 of Fig. 2 .
  • an angle A contained between the limiting groove 230 and a virtual horizontal-surface is smaller than 180 degrees, and the angle A is 45 degrees in this embodiment.
  • a central line of the limiting groove 230 is not parallel to the horizontal-surface (X-Z surface) but is parallel to a virtual vertical-surface (X-Y surface).
  • Fig. 6 shows an exploded view of a cutting tool holding mechanism 500 according to another embodiment of the present disclosure.
  • Fig. 7 shows a schematic view of a combination state of the cutting tool holding mechanism 500 of Fig. 6 .
  • the cutting tool holding mechanism 500 includes a base 600, a handle 700 and two locking assemblies 400.
  • the base 600 includes an abutting portion 610, a receiving groove 620 and two limiting grooves 630.
  • the abutting portion 610 includes a plurality of abutting surfaces 611, and a number of the abutting surfaces 611 and a position and a shape of each of abutting surfaces 611 are not limited thereto.
  • the receiving groove 620 depressively disposed at the base 600.
  • the limiting grooves 630 are disposed at two sides of the receiving groove 620, respectively, and are both communicated with the receiving groove 620.
  • Two limiting holes 631 are disposed at two sides of the base 600 to correspond to two limiting grooves 630, respectively.
  • the handle 700 is abutted against the base 600.
  • the handle 700 includes a sleeved portion 710 and a plurality of positioning surfaces 701.
  • the sleeved portion 710 is received inside the receiving groove 620.
  • the number of the positioning surfaces 701 is corresponding to the number of the abutting surfaces 611, and the shapes of the positioning surfaces 701 are corresponding to the shapes of the abutting surfaces 611. Accordingly, the positioning surfaces 701 can provide positioning function to position the handle 700 on the base 600 when the sleeved portion 710 is inserted into the receiving groove 620.
  • the abutting surfaces 611 are annularly distributed at the base 600 to surround an opening of the receiving groove 20; thus, the handle 700 which is inserted into the receiving groove 620 can be auto-centering.
  • the base 600 includes a pin hole 640, and the sleeved portion 710 includes an anchor hole 712 corresponding to the pin hole 640.
  • a pin (not shown) can be inserted into the pin hole 640 and the anchor hole 712 to secure the handle 700.
  • the sleeved portion 710 includes a butting portion 711.
  • the butting portion 711 is located at an intersection of the receiving groove 620 and the limiting groove 630.
  • the locking assemblies 400 are disposed inside two limiting grooves 630, respectively, to push against the handle 700.
  • the locking assembly 400 includes a packing ring 410, a locking screw 420, a locking member 430, a guiding bolt 440 and two covers 450.
  • the packing ring 410 has a through hole 411 which is configured for the locking screw 420 to pass through.
  • the locking screw 420 includes a head portion 421 and a screwing portion 422.
  • the head portion 421 is abutted against the packing ring 410.
  • the screwing portion 422 is inserted the through hole 411 to protrude into the limiting groove 630.
  • the locking member 430 is received inside the limiting groove 630 and includes a screwed hole 431 and a guiding groove 432.
  • the screwed hole 431 is for securing the screwing portion 422.
  • the guiding groove 432 is disposed at one side of the locking member 430, and an extension direction of the locking member 430 is parallel to a central axis of the limiting groove 630.
  • the guiding groove 432 is aligned with limiting hole 631 when the locking member 430 is disposed inside the limiting groove 630, and the guiding bolt 440 is disposed inside the limiting hole 631.
  • Covers 450 are for closing two openings of limiting groove 630 to prevent foreign materials falling into the limiting groove 630.
  • Fig. 8 shows a cross-sectional view of the cutting tool holding mechanism 500 taken along line 8-8 of Fig. 7 .
  • the locking screw 420 is fastened, the locking member 430 which is limited by the guiding bolt 440 is moved toward the upper left side of Fig. 4 .
  • the locking member 430 will push against the handle 700 when the locking member 430 keeps moving; thus, the handle 700 is push against an inner wall of the receiving groove 620 and is secured at the base 600.
  • the cutting tool holding mechanism has the following advantages. 1. Because the base of the cutting tool holding mechanism is a one-piece element, the mechanical strength is increased and the design of the mold is simplified. Hence, the cost is decreased and the yield is increased. 2. When the central axis of the locking assembly is parallel to the virtual vertical-surface, the operation for changing new cutting tool or repair is easier. The repairing quality can be improved. 3. The annularly distribution of the positioning surfaces can be coordinated with the abutting surfaces to position the handle such that the handle can be auto-centering when disposed inside the base. The milling ability is increasing. 4. The moving direction of the locking member is parallel to the direction along which the milling force is applied to the cutting tool.
  • the cutting tool will not easily be separated from the handle, and the self-securing ability of the cutting tool is better. 5. Because the central axis of the locking assembly is parallel to the virtual vertical-surface, the securing ability between the handle and the base is sufficient such that the reaction force and supporting force distributing uniformly on the surface of the handle. Besides, due to the disposition of the limiting grooves, there is no necessary to separate the cutting tool holding mechanism when the fastening the handle into the base.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Manipulator (AREA)

Claims (12)

  1. Mécanisme de maintien d'outil de coupe (100) comprenant une base (200), un manche (300) et au moins un ensemble de verrouillage (400), dans lequel la base (200) comprend:
    une rainure de réception (220) disposée par enfoncement dans la base (200);
    au moins une rainure de limitation (230) disposée par enfoncement dans la base (200) et en communication avec la rainure de réception (220);
    le manche (300) qui est en butée contre la base (200), comprenant:
    une portion manchonnée (310) qui est disposée dans la rainure de réception (220) comprenant au moins une portion de butée (311), dans lequel la portion de butée (311) est située sur une intersection de la rainure de réception (220) et la rainure de limitation (230) lorsque la portion manchonnée (310) est disposée dans la rainure de réception (220); et
    l'au moins un ensemble de verrouillage (400) comprenant:
    une vis de verrouillage (420) comprenant:
    une portion de tête (421); et
    une portion de vissage (422) pour faire saillie dans la rainure de limitation (230);
    un élément de vissage (430) qui est reçu dans la rainure de limitation (230), comprenant:
    un trou vissé (431) pour la fixation de la portion de vissage (422);
    caractérisé en ce que la base (200) comprend au moins un trou de limitation (231) disposé sur la base (200) et en communication avec la rainure de limitation (230); l'élément de verrouillage (430) comprend en outre:
    une rainure de guidage (432) disposée sur un côté de l'élément de verrouillage (430), la rainure de guidage (432) étant alignée sur le trou de limitation (231) lorsque l'élément de verrouillage (430) est disposé dans la rainure de limitation (230), une direction d'extension de la rainure de guidage (432) étant parallèle à un axe central de la rainure de limitation (230); et
    la base (200) comprend en outre:
    un boulon de guidage (440) disposé dans le trou de limitation (231), le boulon de guidage (440) étant en butée contre la rainure de guidage (432) pour empêcher l'élément de verrouillage (430) de tourner, l'élément de verrouillage (430) étant destiné à se déplacer le long de l'axe central pour pousser contre la portion en butée (311).
  2. Mécanisme de maintien d'outil de coupe (100) selon la revendication 1, dans lequel la base (200) comprend une portion de butée (210) qui comprend une pluralité de surfaces de butée (211) distribuées circulairement sur la portion de butée (210), le manche (300) comprend une pluralité de surfaces de positionnement (301), et un nombre de surfaces de positionnement (301) correspond à un nombre de surfaces de butée (211) de sorte que le manche (300) puisse être positionné sur la base (200).
  3. Mécanisme de maintien d'outil de coupe (100) selon la revendication 2, dans lequel la rainure de réception (220) est entourée par les surfaces de butée (211).
  4. Mécanisme de maintien d'outil de coupe (100) selon la revendication 1, dans lequel un angle contenu entre la rainure de limitation (230) et une surface horizontale virtuelle est inférieur à 180 degrés.
  5. Mécanisme de maintien d'outil de coupe (100) selon la revendication 1, dans lequel la rainure de limitation (230) est parallèle à une surface verticale virtuelle.
  6. Mécanisme de maintien d'outil de coupe (100) selon la revendication 1, dans lequel la rainure de réception (220) passe au travers de la base.
  7. Mécanisme de maintien d'outil de coupe (100) selon la revendication 1, dans lequel la rainure de limitation (230) passe au travers de la base (200).
  8. Mécanisme de maintien d'outil de coupe (100) selon la revendication 7, dans lequel l'ensemble de verrouillage (400) comprend en outre:
    deux couvercles (450) disposés sur deux côtés de la rainure de limitation (230) respectivement de sorte que la rainure de limitation (230) soit fermée.
  9. Mécanisme de maintien d'outil de coupe (100) selon la revendication 1, dans lequel la base (200) comprend un trou d'axe (240), la portion manchonnée (310) comprend un trou d'ancrage (312) qui correspond au trou d'axe (240), et le trou d'axe (240) et le trou d'ancrage (312) sont configurés pour permettre à un axe de s'insérer de sorte à fixer le manche (300).
  10. Mécanisme de maintien d'outil de coupe (100) selon la revendication 2, dans lequel un nombre de rainures de limitation (230) est de deux, un nombre de trous de limitation (231) est de deux, un nombre de portions en butée (311) est de deux, deux rainures de limitation (230) et deux trous de limitation (231) sont disposés sur deux côtés correspondants de la rainure de réception (220) respectivement, et deux portions en butée (311) sont disposées par enfoncement sur deux côtés correspondants de la portion manchonnée (310) respectivement.
  11. Mécanisme de maintien d'outil de coupe (100) selon la revendication 10, dans lequel un nombre d'ensembles de verrouillage (400) est de deux, et deux ensembles de verrouillage (400) correspondent aux deux rainures de limitation (230) respectivement.
  12. Mécanisme de maintien d'outil de coupe (100) selon la revendication 1, dans lequel l'au moins un ensemble de verrouillage (400) comprend en outre:
    un anneau d'emballage (410) comprenant un trou débouchant (411);
    dans lequel la portion de vissage (422) passe au travers du trou débouchant (410) pour faire saillie dans la rainure de limitation (230).
EP17169514.1A 2016-05-31 2017-05-04 Mécanisme de maintien d'outil de coupe Active EP3251809B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW16208136 2016-05-31

Publications (2)

Publication Number Publication Date
EP3251809A1 EP3251809A1 (fr) 2017-12-06
EP3251809B1 true EP3251809B1 (fr) 2019-07-24

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EP17169514.1A Active EP3251809B1 (fr) 2016-05-31 2017-05-04 Mécanisme de maintien d'outil de coupe

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018204777A1 (de) * 2018-03-28 2019-10-02 Thyssenkrupp Ag Aufnahmeanordnung eines Rundschaftmeißels in einer Aufnahme

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB618718A (en) * 1946-11-18 1949-02-25 Thomas Ridley Currie Improvements in and relating to coal cutter picks, and the pick-holders and pick-boxes therefor
DE1106145B (de) * 1956-01-13 1961-05-04 Devlieg Microbore Company Schnellbefestigung von mit einem konischen Schaft versehenen Werkzeugen
DE20306065U1 (de) * 2003-04-16 2003-06-18 Boart Longyear GmbH & Co. KG Hartmetallwerkzeugfabrik, 36151 Burghaun Walzenförmiger Schneidkörper
TWM430328U (en) * 2012-02-13 2012-06-01 Everpads Co Ltd Tool-holding device
TWM512456U (zh) * 2015-03-27 2015-11-21 Everpads Co Ltd 刀具夾持器

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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