WO2003037556A1 - Mandrin de serrage avant et procede de serrage avant - Google Patents

Mandrin de serrage avant et procede de serrage avant Download PDF

Info

Publication number
WO2003037556A1
WO2003037556A1 PCT/JP2002/011437 JP0211437W WO03037556A1 WO 2003037556 A1 WO2003037556 A1 WO 2003037556A1 JP 0211437 W JP0211437 W JP 0211437W WO 03037556 A1 WO03037556 A1 WO 03037556A1
Authority
WO
WIPO (PCT)
Prior art keywords
collet
chuck
work
face
face clamp
Prior art date
Application number
PCT/JP2002/011437
Other languages
English (en)
Japanese (ja)
Inventor
Hiroshi Hachiro
Original Assignee
Ohfuna Netsuren 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 Ohfuna Netsuren Co., Ltd. filed Critical Ohfuna Netsuren Co., Ltd.
Publication of WO2003037556A1 publication Critical patent/WO2003037556A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02—Chucks
    • B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
    • B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
    • B23B31/18—Chucks with simultaneously-acting jaws, whether or not also individually adjustable pivotally movable in planes containing the axis of the chuck
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02—Chucks
    • B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
    • B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
    • B23B31/20—Longitudinally-split sleeves, e.g. collet chucks
    • B23B31/201—Characterized by features relating primarily to remote control of the gripping means
    • B23B31/202—Details of the jaws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02—Chucks
    • B23B31/24—Chucks characterised by features relating primarily to remote control of the gripping means
    • B23B31/30—Chucks characterised by features relating primarily to remote control of the gripping means using fluid-pressure means in the chuck
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2270/00—Details of turning, boring or drilling machines, processes or tools not otherwise provided for
    • B23B2270/02—Use of a particular power source
    • B23B2270/025—Hydraulics

Definitions

  • the present invention relates to a face clamp chuck attached to a main shaft of a lathe, and more particularly, to a face clamp chuck for centering the inner diameter of a ring-shaped work with a collet chuck and performing face clamp with a holding claw in the centered state, and Consider the face clamp method.
  • a face clamp chuck used to cut the inner diameter of a ring-shaped work using a lathe, etc. is a ring on the circumference of a chuck mounting base attached to the main shaft of a lathe or the like.
  • a plurality of swinging and rotating holding claws are provided at equal intervals on the outer circumference of the work abutment, and at the center of the chuck mounting base.
  • a face clamp chuck which is provided with a centering mechanism using a taper surface or the like to facilitate the work centering work (for example, see Japanese Patent Application Laid-Open No. 9-66410).
  • the inner diameter surface of the ring-shaped work is tapered at the center of the chuck mounting base. Since the workpiece is clamped and face-clamped using a plurality of holding claws in that state, the centered ring-shaped work moves when it is clamped by the holding claws, There was a risk of displacement, and as it was, it was not possible to accurately center the inner surface of the work, resulting in poor work efficiency.
  • the present invention has been made in view of the above circumstances, and in a face clamp chuck, by using a collet chuck as a ring-shaped centering means, centering based on the inner diameter surface of a ring-shaped work.
  • the purpose is to perform the task efficiently and easily.
  • the face clamp chuck includes a centering mechanism composed of a collect chuck, a plurality of surface press cylinders arranged at equal intervals on an outer circumference of the collect chuck, and a plurality of press claws driven by the surface press cylinder.
  • the purpose is to make the whole structure compact by the clamp mechanism.
  • a plurality of pressing claws provided at equal intervals on the circumference of the chuck mounting base are hydraulically driven by surface pressing cylinders, respectively, so as to eliminate variations in the pressing force among the plurality of pressing claws. I do.
  • Another object of the present invention is to facilitate the inner diameter machining and surface machining of a ring-shaped workpiece by centering the inner diameter of the ring-shaped workpiece using a collet chuck, clamping the outer peripheral surface, and then retracting the collet chuck.
  • the invention according to claim 1 is characterized in that a collet main body and a collet pulling arrow that are movable in the axial direction are provided at the center of the chuck mounting base, and the outer periphery of the collet main body is provided. It is characterized by a face clamp chuck provided with a plurality of surface holding cylinders and a plurality of pressing claws driven by the surface pressing cylinders.
  • the work can be centered on the basis of the reference, and the work is clamped and face-clamped by a plurality of holding claws and a work clamp operated by fluid pressure, so there is no difference in the pressing force between the plurality of holding claws. In addition, the work is not partially deformed.
  • a second aspect of the present invention is the face clamp chuck according to the first aspect, wherein a work abutment is provided between the collet main body and the face holding cylinder.
  • the work can be clamped between the gold and the plurality of presser claws and fixed firmly.
  • a third aspect of the present invention is the face clamp chuck according to the first or second aspect, wherein the collet body is fixed to the draw pipe, and the collet drawer is connected to the draw pipe. It is characterized in that it is fixed to the passed drawer port, so that the centering mechanism can be compactly arranged on the chuck mounting base, and the external shape of the face clamp chuck can be made smaller.
  • a fourth aspect of the present invention is the face clamp check according to the third aspect, wherein the draw pipe and the draw port are driven by cylinders, respectively. Can be accurately driven with a sufficient driving force.
  • the invention according to claim 5 is characterized in that the inner diameter of the ring-shaped work is centered by the collet body and the collet drawer, and the outer peripheral surface of the ring-shaped work is provided on the outer periphery of the collet body. It is characterized in that it is a face clamping method of clamping with a claw and then retracting the collet main body and the collet pulling arrow, so that even if the workpiece has an irregular outer shape, the workpiece is centered using the inner diameter and clamped. Further, the inner peripheral surface and the surface of the ring-shaped work can be easily processed by retracting the collet after the clamp and the collet drawer to the rear. BRIEF DESCRIPTION OF THE FIGURES
  • FIG. 1 is an overall assembly view showing a state in which a preferred face clamp chuck of the present invention is attached to a main shaft of a lathe
  • FIG. 2 is a longitudinal sectional view of the face clamp chuck shown in FIG.
  • FIG. 3 is a front view of a chuck mounting base used in the face clamp check shown in FIG. BEST MODE FOR CARRYING OUT THE INVENTION
  • FIG. 1 shows a preferred face clamp chuck A according to the present invention
  • FIG. 2B is an overall assembly drawing showing a state in which the double-cylinder device C and the double-cylinder device C are attached to the main spindle of the lathe in a partial cross section.
  • the face clamp chuck A of the present invention includes a chuck mounting base 10, a centering mechanism 20, a clamp mechanism 30, a work abutment 40, etc., and the center of the chuck mounting base 10.
  • the centering mechanism 20 is arranged on the shaft, and the work contact part 40 is located on the same circumference outside the centering mechanism 20 and the clamp mechanism is located on the same circumference. 30 is provided.
  • the lubricating device B is composed of a rotary valve and supplies pressure oil from an external hydraulic source to the clamp mechanism 30.
  • the double cylinder device C has concentric double cylinders and And a rotation valve for supplying the pressure, and controls the centering mechanism 20.
  • FIG. 2 is a longitudinal sectional view of the face clamp chuck of the present invention
  • FIG. 3 is a front view of a chuck mounting base used in the face clamp chuck shown in FIG.
  • the chuck mounting base 10 is mounted on a spindle protruding from the headstock L of the lathe, and has a pipe fitting 11 on an inner diameter portion.
  • the chuck mounting base 10 is formed with four chuck opening oil guide holes 13 as well as four chuck opening oil guide holes 13 radially from the inner diameter part.
  • An opening 14 communicating with 13 is provided.
  • the four chuck closing oil guide holes 12 and the four chuck opening oil guide holes 13 are used to connect the two oil guide holes in the pipe fitting 11 so that each of them is integrated into one.
  • the two oil guide pipes for opening 15 and two oil guide pipes for closing 16 are connected via the headstock L and guided to the oil supply device B.
  • the centering mechanism 20 for centering the work W is composed of a collet body 21, a draw pipe 22, a collet drawer 23, a draw bolt 24, and the like.
  • the collet body 21 has a substantially cup shape as a whole, has, for example, six axial slits on the side wall, and has a tapered surface 21a formed on the inner surface at the upper end of the side wall. It is fixed to the draw pipe 22 via a ported pipe fixing bracket 25 by screwing and a nut.
  • the draw pipe 22 penetrates the piping fitting 11 of the chuck mounting base 10 and is guided to the double cylinder device C, and the collet body 21 is axially moved by the chuck drive cylinder built in the outer peripheral side. It can be driven.
  • a chuck jaw 21 is removably attached to the outer surface of the upper end of the side wall of the collet body 21 by a port, and the chuck jaw 21b is provided with an appropriate configuration. By exchanging, the size and shape of the work W can be handled.
  • a tape Facing the taper surface 21 a formed on the collet body 21, a tape is A collet drawer 23 having a par surface 23a is arranged, and the collet drawer 23 is fixed to a tip of the draw bolt 24 by a nut.
  • the draw port 24 is passed through the draw pipe 22, penetrates the spindle of the lathe and the headstock L, is guided to the double cylinder device C, and has a chuck built in the inner peripheral side of the double cylinder device C.
  • the open / close cylinder allows the collet drawer 23 to be pushed into the tapered surface 21 a of the collet body 21, or to be pushed out from the tapered surface 21 a of the collet body 21.
  • the tapered surface 23a formed on the collet drawer 23 is formed on the collet body 21.
  • the pieces of the collet body 21 are expanded in diameter and engaged with the inner diameter of the ring-shaped workpiece W to perform chucking and centering. Further, the collet body 21 can move forward and backward independently of the collet body 21 by the draw pipe 22 and can retreat from the state shown in FIG. 1 to the retracted position.
  • a collet guide 26 is provided on the back surface of the collet drawer 23, and a collet guide 27 is provided on the collet body 21.
  • the drawbars 23 can move smoothly in the axial direction.
  • FIG. 1 shows a state in which the draw pipe 22 is pushed out, the draw port 24 is pulled in, and the collect body 21 is centering the work W.
  • the lower half of the figure shows a state in which the centering of the workpiece W has been completed and the face clamp has been performed by the holding claws 36.
  • the work support part 40 is substantially ring-shaped and includes a support base 41 and a work support 42.
  • the support base 41 is bolted to the chuck mounting base 10 and the support base 4 1 In contrast, by replacing the work allowance 42 with an appropriate size and shape, a work W of an appropriate size and shape can be accommodated.
  • the inner surface of the ring-shaped base 41 also functions as a guide when the collet body 21 moves in the axial direction.
  • the clamp mechanism 30 is centered on the work piece 42 of the work piece part 40, and the clamp body 21 is used to face-clamp the work W installed in a temporarily fixed state. ⁇ Pressing pawl 3 6 that swings up and down by the piston mechanism Have.
  • the presser claw 36 is composed of a presser claw base 36a and a work clamp claw 36b. By replacing the work presser claw 36b, it is possible to cope with a work W of an appropriate size. it can.
  • the face holding cylinder 31 has an oil guide hole 37 communicating with the right side chamber of the piston 32, and the chuck mounting base 10 has a chuck closing oil guide hole 12 through an oil guide hole 3.
  • the presser pawl 36 is swung to the clamp position (closed state) via the piston rod 33 and the connecting rod 34 to move the workpiece W to the workpiece. It can be clamped by being sandwiched between the metal part 40.
  • the left side chamber of the piston 32 communicates with the chuck opening oil guide hole 13 of the chuck mounting base 10 through the opening 14 provided in the chuck mounting base 10.
  • the presser pawl 36 is moved to the open position (open state) by supplying hydraulic pressure to the chuck opening oil guide hole 13. be able to.
  • the face clamp chuck A has the above-described configuration. However, for the face clamp chuck A, an oil supply device B that supplies oil pressure to the four face holding cylinders 31 and a draw pipe 22 are provided. The outline of the chuck, drive cylinder, and chuck opening / closing cylinder of the double cylinder device C that drives the draw port 24 by pushing and pulling will be described.
  • the lubricator B that supplies hydraulic pressure to the four face holding cylinders 3 1 is located on the back side of the headstock L.
  • the hydraulic pressure supplied from a hydraulic pump (not shown) via a switching valve is connected to the pipe fitting 11 of the face clamp chuck A via a rotary valve shaft built in the lubricator B.
  • Double cylinder device C has a built-in rotary valve, chuck driving cylinder, and chuck opening / closing cylinder, and has a configuration in which the chuck driving cylinder is coaxially compactly arranged around the periphery of the chuck opening / closing cylinder.
  • the chuck drive cylinder slides the draw pipe 22 to move the collet body 21 forward and backward, and the chuck opening / closing cylinder slides the draw bolt 24 to move the collet body 21 in the forward position. Open and close each collet piece.
  • the hydraulic pressure supplied to the chuck driving cylinder and the chuck opening / closing cylinder is supplied from a hydraulic pump (not shown) via a switching valve via a rotary valve built in the double cylinder device C.
  • the collet drawer 23 is driven to the chuck mounting base 10 side by the chuck driving cylinder built in the double cylinder device C, and the taper surface 23a of the collet drawer 23 is collected.
  • the collet body 21 is pressed into the taper surface 21 a of the main body 21, and the collet body 21 is temporarily engaged with the inner peripheral surface of the enlarged diameter ring-shaped workpiece W.
  • a cutting tool, a grinding tool, etc. are inserted from the inner diameter of the ring-shaped work W and processing is performed. Also, the surface of the ring-shaped workpiece W is processed.
  • the four face pushing cylinders 31 of the face clamp chuck A and the chuck driving cylinder and the chuck opening / closing cylinder incorporated in the double cylinder device C are hydraulic cylinders, respectively. Not only a hydraulic cylinder but also a pneumatic cylinder using compressed air can be used.
  • the present invention has the following effects.
  • a collet main body and a collet drawer which are movable in the axial direction are provided at the center of the chuck mounting base, and the collet chuck can center the inner diameter surface of the work, and the work is even machined. If this is the case, it is possible to perform highly accurate inner diameter and surface processing even if the outer shape and the end face are irregular.
  • the collet body is fixed to the end of the draw pipe, and the collet drawhead is fixed to the end of the draw bolt passed through the draw pipe, so the centering mechanism is compacted at the center of the chuck mounting base. And the outer shape of the face clamp chuck can be reduced.
  • the draw pipe and the draw bolt are respectively driven by the centering cylinder mechanism, the draw pipe and the draw bolt can be accurately driven with a sufficient driving force.
  • the present invention provides a method for centering using the inner diameter of a ring-shaped work, and clamping the outer peripheral surface. By retracting the collet after the clamp and the collet drawer, a space is created near the inner diameter, and the inner peripheral surface and the surface can be easily processed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping On Spindles (AREA)

Abstract

L'invention concerne un procédé de serrage avant, comprenant les étapes qui consiste à tracter un boulon de serrage (24) afin d'ajuster par serrage une flèche de traction (23) de collet sur une surface conique (21a) ménagée sur un corps de collet (21) de manière à agrandir la portion diamètre d'une pièce à usiner (W) en forme d'anneau; à appliquer une pression hydraulique aux chambres côté droit des pistons (32) dans des cylindres (31) à pression superficielle afin de basculer des griffes de retenue (36) dans une position qui permet de maintenir la pièce à usiner (W) dans l'espace vide prévu à cet effet, depuis des éléments (40) de raccordement de pièce à usiner pour permettre le serrage avant; à déplacer uniquement vers l'arrière le corps de collet (21) dans une position de dégagement par le conduit de traction (22); à introduire un outil coupant depuis le côté de la surface avant d'un mandrin de serrage avant dans la surface du diamètre interne de la pièce à usiner (W); puis, à couper ladite pièce à usiner (W) pendant le déplacement de l'outil coupant vers le côté inférieur. L'utilisation du mandrin à bague pour le centrage de la pièce à usiner en forme d'anneau, permet de réaliser un centrage efficace et simple en fonction de la surface du diamètre interne de ladite pièce à usiner.
PCT/JP2002/011437 2001-11-02 2002-10-31 Mandrin de serrage avant et procede de serrage avant WO2003037556A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2001-338113 2001-11-02
JP2001338113A JP2005177866A (ja) 2001-11-02 2001-11-02 フェースクランプチャック

Publications (1)

Publication Number Publication Date
WO2003037556A1 true WO2003037556A1 (fr) 2003-05-08

Family

ID=19152653

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2002/011437 WO2003037556A1 (fr) 2001-11-02 2002-10-31 Mandrin de serrage avant et procede de serrage avant

Country Status (2)

Country Link
JP (1) JP2005177866A (fr)
WO (1) WO2003037556A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109909880A (zh) * 2019-04-17 2019-06-21 郑州航空工业管理学院 一种数控工具磨床的机械加工夹具

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7015149B2 (ja) 2017-11-08 2022-02-02 株式会社Fuji チャック装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5622641B2 (fr) * 1976-10-08 1981-05-26
JPS6445501A (en) * 1987-08-11 1989-02-20 Teikoku Chuck Co Chuck for machining inside diameter
JPH01135404A (ja) * 1987-11-16 1989-05-29 Terasaka Tetsukazu 内外径加工用チヤツク
JPH0215809U (fr) * 1988-07-18 1990-01-31
JPH06262411A (ja) * 1993-03-08 1994-09-20 Howa Mach Ltd フィンガーチャック

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5622641B2 (fr) * 1976-10-08 1981-05-26
JPS6445501A (en) * 1987-08-11 1989-02-20 Teikoku Chuck Co Chuck for machining inside diameter
JPH01135404A (ja) * 1987-11-16 1989-05-29 Terasaka Tetsukazu 内外径加工用チヤツク
JPH0215809U (fr) * 1988-07-18 1990-01-31
JPH06262411A (ja) * 1993-03-08 1994-09-20 Howa Mach Ltd フィンガーチャック

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109909880A (zh) * 2019-04-17 2019-06-21 郑州航空工业管理学院 一种数控工具磨床的机械加工夹具
CN109909880B (zh) * 2019-04-17 2021-05-07 郑州航空工业管理学院 一种数控工具磨床的机械加工夹具

Also Published As

Publication number Publication date
JP2005177866A (ja) 2005-07-07

Similar Documents

Publication Publication Date Title
US7972096B2 (en) Spindle device of machine tool
JP5562410B2 (ja) 工作機械の主軸装置
US5848795A (en) Front part replacement type finger chuck
JP3970887B2 (ja) クランプ装置
JP5985354B2 (ja) 心押台及び工作機械
JP2001509090A (ja) 油圧機械式チャック
KR20120112403A (ko) 공구 고정기를 수용하고 구동하기 위한 스핀들 장치
US4141263A (en) Device for the centered clamping of annular workpieces
WO2003037556A1 (fr) Mandrin de serrage avant et procede de serrage avant
JP2001025932A (ja) 工具ホルダ把持機構
CN207642328U (zh) 一种车床上的前置回转缸式液压卡盘
JP6832080B2 (ja) フェースクランプチャック装置
CN215509036U (zh) 用于车床同心加工的弹性涨夹装置
JP4936065B2 (ja) タイヤホイール保持用チャックのタイヤホイール防振方法及び装置
JP5175119B2 (ja) ワーク支持装置
JP5049850B2 (ja) 摩擦圧接機のチャック装置およびワーク把持の開放方法
CN103212898B (zh) 一种适用于薄壁管材的气动夹持系统
JP2568012B2 (ja) チャック装置
JPS61125710A (ja) チヤツク装置
JP4764666B2 (ja) タイヤホイールの加工方法およびタイヤホイール加工用把持構造
JP3906692B2 (ja) タイヤホイール保持用チャックにおける防振装置
JP4267430B2 (ja) 加工物把持装置
JP2002263922A (ja) 主軸の加工物押出し装置
CN216398872U (zh) 制作活塞油环体用的夹紧装置
JP2646268B2 (ja) 穴ぐり装置

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): CN JP KR US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LU MC NL PT SE SK TR

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP