WO2018186690A1 - Support permettant la fixation d'outil de coupe - Google Patents

Support permettant la fixation d'outil de coupe Download PDF

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Publication number
WO2018186690A1
WO2018186690A1 PCT/KR2018/004003 KR2018004003W WO2018186690A1 WO 2018186690 A1 WO2018186690 A1 WO 2018186690A1 KR 2018004003 W KR2018004003 W KR 2018004003W WO 2018186690 A1 WO2018186690 A1 WO 2018186690A1
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WO
WIPO (PCT)
Prior art keywords
adapter
hole
holder
slider
screw
Prior art date
Application number
PCT/KR2018/004003
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English (en)
Korean (ko)
Inventor
서재원
Original Assignee
주식회사 삼천리기계
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 주식회사 삼천리기계 filed Critical 주식회사 삼천리기계
Publication of WO2018186690A1 publication Critical patent/WO2018186690A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/12—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for securing to a spindle in general
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C5/00—Milling-cutters
    • B23C5/26—Securing milling cutters to the driving spindle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C9/00—Details or accessories so far as specially adapted to milling machines or cutter

Definitions

  • the present invention is for fastening a cutting tool for fastening a cutting tool such as a drill or an end mill, a side milling cutter to a head of a machine tool when reamering or milling a machining center or the like.
  • a cutting tool such as a drill or an end mill, a side milling cutter to a head of a machine tool when reamering or milling a machining center or the like.
  • the holder more specifically, it is possible to install the drive screw gear and the spindle inside the single-shaped holder without dividing the holder body, so that the drive screw gear and spindle can be replaced if necessary.
  • the present invention relates to a holder for fastening a cutting tool such that the verticality does not change.
  • a milling chuck is applied to a machine tool such as a machining center or a milling machine to serve as a kind of adapter for mounting a cutting tool.
  • FIG. 1 is a longitudinal cross-sectional view of a conventional cutting tool fastening holder and Figure 2 is a cross-sectional view taken along the line A-A of Figure 1, the conventional cutting tool fastening holder 10, the tool 11 held in the holder is machined It is for attaching detachably to the head part 9 of a machine,
  • the member 17, the pull stud 18, etc. are comprised.
  • the holder body 12 has a tapered shank portion 121, a flange portion 122 formed at one end of the shank portion 121, and a shank portion 121 of the flange portion 122 as shown in FIG.
  • the adapter coupling part 123 is continuously connected to the lower part of the adapter coupling part 123, and the first cylindrical hole 123a for coupling the adapter 13 and the bevel gear 16 are rotatable.
  • the second cylindrical hole 123b is installed concentrically.
  • a through hole 12a extending from the rear end of the shank portion 121 to the second cylindrical hole 123b is formed in the shaft center of the holder main body 12, and the full stud 18 is formed on the inner circumferential surface of the through hole 12a.
  • the female threaded portion 12b to which the screw) is screwed is formed over a predetermined section.
  • the adapter 13 accommodates the tapered collet 14 as shown in FIGS. 1 and 2, and has a length corresponding to the length of the tapered collet 14.
  • a collet holding hole 131 through which the tapered collet 14 is inserted is formed in the shaft center of the adapter 13, and the collet holding hole 131 is formed to correspond to the outer shape of the tapered collet 14.
  • a tapered portion 131a, an evacuation portion 131b, and a straight portion 131c are sequentially formed from the front end of the adapter 13 to the rear end direction.
  • the adapter 13 has, at one end, a locking jaw portion 132 having a diameter corresponding to the adapter coupling portion 123 is formed, and a plurality of bolts 19 are arranged along the entire cross section of the adapter coupling portion 123. Is fixed to match, and the upper portion of the adapter 13 is formed with a cylindrical portion 133 assembled in the first cylindrical hole 123a of the adapter coupling portion 123.
  • the tapered collet 14 is detachably inserted into the collet holding hole 131 of the adapter 13 while holding the tool 11, and the shank portion 11a of the tool 11 as shown in FIG. 1.
  • the shank insertion hole 141 into which is inserted is formed at the center of the shaft portion and configured to be capable of shaft reduction, and the tapered portion 14a engaged with the tapered portion 131a and the straight portion 131c of the collet holding hole 131.
  • a straight portion 14b, and a male screw portion 142 is screwed to the female screw portion 162 of the bevel gear 16 on the upper outer peripheral surface of the straight portion 14b.
  • the driving bevel pinion 15 is for holding the tool 11 or releasing the holding state by moving the tapered collet 14 in the axial direction of the adapter 13 as shown in FIGS. 1 and 2.
  • the driving bevel pinion 15 is rotatably mounted in the insertion hole 20 formed to penetrate through the outer circumferential surface of the flange portion 122 formed in the holder main body 12.
  • the bevel gear 16 converts the rotational movement of the driving bevel pinion 15 into a linear motion in the axial direction of the tapered collet 14, and the bevel gear 16 is mutually different from the driving bevel pinion 15. It is rotatably attached to the 2nd cylindrical hole 123b of the adapter 13 so that it may be engaged.
  • the outer peripheral surface of the cylindrical boss portion 161 formed on the bevel gear 16 is provided with a sealing member 21 to be connected to the cylindrical portion 133 of the adapter 13, the tapered collet on the inner peripheral surface of the boss portion 161
  • a female threaded portion 162 is screwed into the male threaded portion 142 of (14).
  • a through hole 163 is formed in the shaft portion of the bevel gear 16 to communicate with the boss portion 161, and a locking jaw portion 164 is formed on the inner circumferential surface of the through hole 163.
  • a position limiting jaw 165 for suppressing a phenomenon in which the bevel gear 16 moves in the axial direction is formed at a portion connected to the boss 161 formed in the bevel gear 16.
  • 165 is comprised so that it may be clamped by the edge part 123c formed between the tip surface of the cylindrical part 133, and the 1st cylindrical hole 123a which opposes it, and the 2nd cylindrical hole 123b.
  • the cutting fluid distribution member 17 guides the cutting fluid supplied from the rear end of the holder main body 12 through the inside of the holder main body 12 to the tapered collet 14 side, and at the same time the driving bevel pinion 15 and
  • the sealing member 22 is installed in the through hole 163 so as to be prevented from leaking to the bevel gear 16 side, so as to be pressed by the locking jaw portion 164 and the cutting fluid flow member 17 of the bevel gear 16.
  • Another sealing member 23 is provided between the first cylindrical portion 171 and the second cylindrical portion 172 so that cutting fluid does not flow out to the driving bevel pinion 15 and the bevel gear 16 side. It is comprised so that it may be connected to the through-hole 12a of the holder main body 12. As shown in FIG.
  • the pull stud 18 is for attaching the shank portion 121 of the holder body 12 to the taper hole 9A of the head portion 9, and is screwed to the female threaded portion 12b of the holder body 12.
  • the cutting fluid is composed of a shaft portion 183 formed at the rear end of the shaft and a flange-shaped engagement portion 184 provided at the rear end of the shaft portion 183 and a cutting liquid is supplied in the vertical direction to the center of the full stud 18.
  • the supply passage 185 is formed.
  • the shank portion 11a of the tool 11 must be pushed into the shank insertion hole 141 of the tapered collet 14, in which case the tapered collet 14 ),
  • the shank insertion hole 141 of the tapered collet 14 cut out in the vertical direction and cut out in the vertical direction (about 3-4 pieces) is extended by its elastic force.
  • the driving bevel pinion 15 meshes with the bevel gear 16 to rotate the bevel gear 16.
  • the boss portion 161 of the bevel gear 16 is rotated.
  • the female threaded portion 162 formed in the) is screwed to the male threaded portion 142 of the tapered collet 14 so that the tapered collet 14 moves inside the collet holding hole 131 of the adapter 13.
  • the tapered portion 14a of the tapered collet 14 is compressed by the tapered portion 131a formed inside the adapter 13, thereby tightening the shank 11a of the tool 11. ), The holding of the tool 11 is completed.
  • Patent Document 0001 Japanese Patent Publication No. 03285809 (Announced on May 27, 2002)
  • Patent Document 0002 Japanese Patent Publication No. 04157420 (August 1, 2008)
  • the conventional cutting tool fastening holder has a number of problems as follows.
  • the holder 10 is divided into a holder body 12 and an adapter 13 in order to install the driving bevel pinion 15, the bevel gear 16, and the cutting fluid flow member 17 in the holder. It is comprised so that these may be integrated with the bolt 19, and productivity increased because of the increase of the number of parts.
  • the adapter 13 is assembled, there is a limit in matching the perpendicularity of the holder body 12 and the center of the adapter 13, and there is a fatal defect that degrades the processing accuracy of the workpiece.
  • the present invention has been made to solve such a problem in the prior art, it is possible to install the drive screw gear and the spindle in the interior of the single-shaped holder without dividing the holder body, so that the drive screw gear and spindle as needed
  • the purpose is to ensure that the verticality of the center of the holder does not change even if it is replaced.
  • a tapered shank portion is formed at the upper portion, and an adapter having a tapered portion corresponding to the tapered portion of the collet is formed at the lower portion thereof, and the mounting hole is vertically connected to the tapered portion at the same time.
  • the first male thread part is built in the mounting hole formed in the center of the holder body and screwed into the shank part at one end thereof, and at the other end, a second male thread part opposite to the first male thread part is formed at the other end.
  • a spindle having a driven screw gear integrally formed between two male threads It is installed through the insertion hole formed in the flange portion is engaged with the driven screw gear of the spindle, and screwed into the insertion hole formed in the holder body to close the insertion portion of the drive screw gear, the center of the tool insertion hole is formed
  • a first female threaded portion inserted through a lower portion of the adapter and screwed to a second male threaded portion of the spindle, the slider being formed to penetrate a long vertical hole, and an anti-rotation member formed on the adapter of the holder body; It is installed to pass through the long hole of the slider through the ball to suppress the rotation of the slider to prevent the slider to move up and down so that the collet is inserted through the collet holding hole of the adapter is screwed to the slider
  • a holder for fastening a cutting tool is provided.
  • the present invention has the following advantages over the holder for fastening cutting tools.
  • the holder body is formed in one piece, even if the component is replaced, the vertical degree is prevented in advance, so that the precision of the holder body can be constantly maintained.
  • the holder body is made in one piece, it is possible to omit a separate polishing process, thereby improving productivity.
  • FIG. 1 is a longitudinal cross-sectional view of a conventional cutting tool fastening holder
  • FIG. 2 is a cross-sectional view taken along the line A-A of FIG.
  • FIG. 3 is a perspective view showing one embodiment of the present invention
  • FIG. 4 is a perspective view showing a partial cross section of an embodiment of the present invention.
  • FIG. 5 is an exploded perspective view showing the main part of the present invention.
  • FIG. 6 is an assembled perspective view of FIG.
  • FIG. 7 is a plan view showing a state in which the drive screw gear is engaged with the driven screw gear of the spindle in the present invention.
  • FIG. 8A and 8B are longitudinal cross-sectional views of FIG. 3 for explaining the operating state of the present invention.
  • Figure 4 is a perspective view showing a part of the embodiment of the present invention and Figure 5 is an exploded perspective view showing the main part of the present invention
  • Figures 8a and 8b is a longitudinal cross-sectional view of Figure 3 for explaining the operating state of the present invention
  • the present invention is an integrated holder main body 30, the spindle 40 is installed in the holder main body to rotate in rotation, the drive screw gear 50 for rotating the spindle 40, the drive screw gear 50 in the holder main body 30 Is fixed to the cap 60, the slider 70 is fixed to the spindle 40 to prevent the deviation from being separated, the slider 70 to prevent the rotation of the slider, the rotation preventing member 80 to prevent the rotation of the slider, the slider 70 And a collet 90 holding the same).
  • the holder body 30 has a tapered shank portion 31 formed at the upper portion thereof, and an adapter 32 having a tapered portion 32a corresponding to the tapered portion 91 of the collet 90 is formed at the lower portion thereof.
  • an adapter 32 having a tapered portion 32a corresponding to the tapered portion 91 of the collet 90 is formed at the lower portion thereof.
  • a flange portion 33 which abuts on the bottom surface of the head portion 9 is formed.
  • a mounting hole 34 is vertically formed at the center of the holder main body 30 so as to be connected to the tapered portion 32a formed in the adapter 32.
  • a third female thread portion 31a is formed at an upper portion of the mounting hole 34 located in the shank portion 31.
  • the spindle 40 is embedded through the mounting hole 34 formed in the center of the holder body 30, and is screwed to the third female thread portion 31a formed in the shank portion 31 at one end as shown in FIG.
  • a first male thread portion 41 is formed, and at the other end, a second male thread portion 42 having a thread opposite to the first male thread portion 41 is formed, and the first and second male thread portions 41 and 42 are formed.
  • the driven screw gear 43 is integrally formed between them.
  • the first male thread portion 41 is used as the right screw, and the second male thread portion 42 is applied as the left screw.
  • the driving screw gear 50 rotates the spindle 40 by engaging the driven screw gear 43 of the spindle 40 as shown in FIGS. 5 and 7, and the flange portion 33 formed on the holder body 30. It is installed through the insertion hole 35 of the engaged with the driven screw gear 43 of the spindle 40, the tool insertion groove 51 is formed on one surface.
  • the cap 60 is to close the inlet of the insertion hole 35 so that the driving screw gear 50 installed through the insertion hole 35 is not separated, and the cap 60 is screwed into the insertion hole 35 formed in the holder body 30.
  • a tool insertion hole 61 is formed at the center to insert a wrench (not shown) into the tool insertion groove 51 formed in the driving screw gear 50, as shown in FIG.
  • the insertion hole 35 formed to penetrate the flange portion 33 of the holder body 30 has a large diameter portion 36 and a small diameter having a second female thread portion 36a as shown in FIG. 4. Is formed of a neck portion 37, one side of the drive screw gear 50 is formed with a protrusion 52 is assembled to the small diameter portion 37, the drive screw gear 50 through the large diameter portion (36) Is assembled, the protrusion 52 is fitted to the small diameter portion 37 and the inlet of the large diameter portion 36 is closed by the cap 60 which is screwed to the second female screw portion 36a.
  • the holder main body 30 may be inserted to have a 180 ° phase difference in the holder main body 30 as shown in FIG. 9 to facilitate attachment and detachment of a tool (not shown).
  • Forming a hole (35) to install a drive screw gear 50 for engaging the driven screw gear 43 in each of the insertion hole 35 and the inlet of the insertion hole 35 is configured to close with a cap 60 It is understandable.
  • the slider 70 transfers the rotational movement of the spindle 40 to the collet 90 by transferring the rotational movement of the spindle 40 to the collet 90.
  • the first female threaded portion 71 is screwed to the second male threaded portion 42 of the spindle 40.
  • the anti-rotation member 80 is to increase and decrease the rotation of the slider 70, the long hole 72 of the slider 70 through the anti-rotation member fastening hole 38 formed in the adapter 32 It is installed to pass through the other end is inserted into the insertion groove (38a) formed in the adapter 32, the rotation preventing member 80 is fixed by screwing the adapter 32 as shown in FIG.
  • the collet 90 is to hold the tool or release the holding state.
  • the collet 90 is inserted through the collet holding hole 39 of the adapter 32 to be screwed to the slider 70. Since the collet 90 is the same as the conventional collet, its structure Detailed description thereof will be omitted.
  • the taper portion 91 of the collet 90 is connected to the adapter 32. Since the shank insertion hole 93 of the collet 90 having a plurality of incisions 92 is spaced apart from the taper portion 32a of the (), the tool can be replaced since it is in the state of maximum expansion by its own elastic force.
  • the second male thread portion 42 screwed to the slider 70 is formed of a left screw opposite to the first male thread portion 41. Since the slider 70 is released from the second male threaded portion 42, the slider 70 is lowered together with the collet 90 without being rotated by the rotation preventing member 80.
  • the wrench is inserted through the tool insertion hole 61 of the cap 60, which is closing the inlet of the insertion hole 35 formed in the flange portion 33, and the tool insertion groove 51 formed in the drive screw gear 50. 8B, the driven screw gear 43 is engaged with the driving screw gear 50 so that the spindle 40 co-rotates.
  • the second male thread portion 42 of the left hand thread opposite to the first male thread portion 41 is screwed to the first female thread portion 71 formed on the slider 70. Since the first female threaded portion 71 is locked to the second male threaded portion 42, the slider 70 also rises together with the spindle 40.
  • the anti-rotation member 80 is fitted to the long hole 72 formed in the slider 70 so that the slider 70 does not rotate but rises along the mounting hole 34.
  • the slider 70 and the collet 90 fixed are also raised together, and accordingly, the taper portion 91 formed below the outer circumferential surface of the collet 90 is raised. Is pressed by the tapered portion 32a formed on the inner surface of the adapter 32, so that the collet 90 holds the shank portion of the tool as shown in FIG. 8B.

Abstract

La présente invention concerne un support permettant la fixation d'outil de coupe qui permet à un outil de coupe, tel qu'un foret ou un fraise d'extrémité, ou une fraise à fileter latérale, d'être fixé à la partie tête d'une machine-outil au moment de l'alésage ou du fraisage sur un centre d'usinage ou similaire, et permet à un engrenage à vis d'entraînement et à une broche d'être installés à l'intérieur d'un support ayant une forme unique, plutôt que de diviser un corps de support, de telle sorte que la verticalité qui est le centre du support reste inchangée même si l'engrenage à vis d'entraînement et la broche sont remplacés si nécessaire. À cet effet, la présente invention comprend : un corps de support intégré (30) qui comporte une partie tige conique (31) formée à son sommet et un adaptateur (32) formé au fond dudit corps de support, l'adaptateur (32) ayant une partie conique (32a) correspondant à la partie conique (91) d'une virole (90), et ayant également un trou de montage (34) formé verticalement de façon à se connecter à la partie conique (32a), une partie bride (33) qui est en contact avec la surface inférieure d'une partie tête (9) et formée au niveau de la limite entre la partie tige (31) et l'adaptateur (32), un trou d'insertion (35) communiquant avec le trou de montage (34) et étant formé orthogonalement dans la partie bride (33), et un trou de fixation d'élément de prévention de rotation (38) formé dans l'adaptateur (32) ; une broche (40) qui est intégrée par l'intermédiaire du trou de montage (34) formé au centre du corps de support (30) et comporte une première partie de vis mâle (41) formée à une extrémité de ladite broche et accouplée par vissage à l'intérieur de la partie tige (31), une seconde partie de vis mâle (42) qui est formée au niveau de l'autre extrémité de ladite broche et a un pas de vis opposé à celui de la première partie de vis mâle (41), et un engrenage à vis entraîné (43) formé d'un seul tenant entre les première et seconde parties de vis mâle (41, 42) ; un engrenage à vis d'entraînement (50) qui est installé par l'intermédiaire du trou d'insertion (35) de la partie bride (33) formée sur le corps de support (30) et est en prise avec l'engrenage à vis entraîné (43) de la broche (40) ; un capuchon (60) qui est accouplé par vissage au trou d'insertion (35) formé dans le corps de support (30), ferme la zone d'insertion de l'engrenage à vis d'entraînement (50), et comporte un trou d'insertion d'outil (61) formé en son centre ; un curseur (70) ayant une première partie de vis femelle (71), qui est insérée par l'intermédiaire de la partie inférieure de l'adaptateur (32) et accouplée par vissage à la seconde partie de vis mâle (42) de la broche (40), et un trou long (72), qui est verticalement long et formé de manière pénétrante ; et un élément de prévention de rotation (80) qui est installé de manière à passer à travers le trou long (72) du curseur (70) par l'intermédiaire du trou de fixation d'élément de prévention de rotation (38) formé dans l'adaptateur (32) du corps de support (30) et limite la rotation du curseur (70) de façon à faire monter et descendre le curseur (70), la virole (90) étant insérée par l'intermédiaire du trou de stockage/de maintien de virole (39) de l'adaptateur (32) et accouplée par vissage au curseur (70).
PCT/KR2018/004003 2017-04-07 2018-04-05 Support permettant la fixation d'outil de coupe WO2018186690A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2017-0045376 2017-04-07
KR1020170045376A KR101849333B1 (ko) 2017-04-07 2017-04-07 절삭공구 체결용 홀더

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WO (1) WO2018186690A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114310372A (zh) * 2021-12-17 2022-04-12 安徽尧工数控科技有限公司 一种用于数控机床的刀头夹持装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112720138B (zh) * 2020-12-18 2021-12-24 昆山海圳汽车技术发展有限公司 一种汽车发动机缸盖的机加工机构及加工方法

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KR20010006627A (ko) * 1999-02-16 2001-01-26 가부시키가이샤 니켄고사쿠쇼 엔드 밀 처킹 구조
JP3285809B2 (ja) * 1998-01-27 2002-05-27 株式会社日研工作所 小径工具保持用チャック
KR20030076289A (ko) * 2002-03-18 2003-09-26 가부시키가이샤 니켄고사쿠쇼 공구 홀더
JP4100747B2 (ja) * 1998-01-12 2008-06-11 大昭和精機株式会社 工具ホルダー
JP4157420B2 (ja) * 2003-05-13 2008-10-01 株式会社日研工作所 工具ホルダ

Patent Citations (5)

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Publication number Priority date Publication date Assignee Title
JP4100747B2 (ja) * 1998-01-12 2008-06-11 大昭和精機株式会社 工具ホルダー
JP3285809B2 (ja) * 1998-01-27 2002-05-27 株式会社日研工作所 小径工具保持用チャック
KR20010006627A (ko) * 1999-02-16 2001-01-26 가부시키가이샤 니켄고사쿠쇼 엔드 밀 처킹 구조
KR20030076289A (ko) * 2002-03-18 2003-09-26 가부시키가이샤 니켄고사쿠쇼 공구 홀더
JP4157420B2 (ja) * 2003-05-13 2008-10-01 株式会社日研工作所 工具ホルダ

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114310372A (zh) * 2021-12-17 2022-04-12 安徽尧工数控科技有限公司 一种用于数控机床的刀头夹持装置
CN114310372B (zh) * 2021-12-17 2024-04-09 安徽尧工数控科技有限公司 一种用于数控机床的刀头夹持装置

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