WO2005080040A1 - Master spindle for tapping machine - Google Patents

Master spindle for tapping machine Download PDF

Info

Publication number
WO2005080040A1
WO2005080040A1 PCT/KR2005/000410 KR2005000410W WO2005080040A1 WO 2005080040 A1 WO2005080040 A1 WO 2005080040A1 KR 2005000410 W KR2005000410 W KR 2005000410W WO 2005080040 A1 WO2005080040 A1 WO 2005080040A1
Authority
WO
WIPO (PCT)
Prior art keywords
support member
chuck
chuck support
spindle
bushing nut
Prior art date
Application number
PCT/KR2005/000410
Other languages
English (en)
French (fr)
Inventor
Jeung-Kyun Lee
Original Assignee
Sunghun 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
Priority claimed from KR1020040010888A external-priority patent/KR100466925B1/ko
Priority claimed from KR20-2004-0029704U external-priority patent/KR200374319Y1/ko
Application filed by Sunghun Co., Ltd. filed Critical Sunghun Co., Ltd.
Priority to US10/596,037 priority Critical patent/US20080171605A1/en
Priority to CN200580001197XA priority patent/CN1859993B/zh
Priority to JP2006554020A priority patent/JP4692904B2/ja
Publication of WO2005080040A1 publication Critical patent/WO2005080040A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
    • B23G1/00—Thread cutting; Automatic machines specially designed therefor
    • B23G1/44—Equipment or accessories specially designed for machines or devices for thread cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
    • B23G1/00—Thread cutting; Automatic machines specially designed therefor
    • B23G1/16—Thread cutting; Automatic machines specially designed therefor in holes of workpieces by taps
    • B23G1/18—Machines with one working spindle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
    • B23G2240/00—Details of equipment for threading other than threading tools, details of the threading process
    • B23G2240/08—Evacuation of chips or fines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
    • B23G2240/00—Details of equipment for threading other than threading tools, details of the threading process
    • B23G2240/12—Means for cooling or lubrication

Definitions

  • the present invention relates, in general, to a master spindle for a tapping machine which can tap a female thread in a workpiece at high speed and with high precision, and, more particularly, to a master spindle for a tapping machine in which a single chuck support member is used, an umbrella- shaped chip cover or a fluctuation correcting cap is selectively fitted around the chuck support member, the chuck support member is defined with a tap separation hole for easy separation of a tap from a chuck, and tapped holes are defined in a bushing nut threadedly coupled to a spindle bolt.
  • a tap 3 is detachably mounted to a chuck 5 which is mounted to an upper chuck support member 7.
  • the upper chuck support member 7 is detachably locked to a lower support member 9 which is mounted to a spindle bolt 11.
  • a bushing nut 13 is locked to the spindle bolt 11 and is positioned below the lower support member 9. Therefore, the spindle bolt 11 can be raised and lowered while being rotated relative to the bushing nut 13 fastened to a jig 15.
  • the lower end of the spindle bolt 11 is connected to a universal joint (or a cable) (not shown) to receive power. Disclosure of Invention Technical Problem
  • an object of the present invention is to provide a master spindle for a tapping machine in which a single chuck support member for supporting a chuck is used to decrease the length of a chuck support structure and solve the drawbacks resulting from non-concentricity of the chuck support structure.
  • Another object of the present invention is to provide a master spindle for a tapping machine in which an umbrella- shaped chip cover is fitted around the lower end of a chuck support member to prevent chip particles from entering a gap between a bushing nut and a spindle bolt and avoid breakage of screw threads of the bushing nut and the spindle bolt.
  • a further object of the present invention is to provide a master spindle for a tapping machine in which a fluctuation correcting cap fitted around a chuck support member is coupled to a bushing nut by bolts so that, when a spindle bolt threadedly coupled to the bushing nut is rotated relative to the bushing nut, the chuck support member connected integrally to the spindle bolt can be raised and lowered, without fluctuating, on the circumferential inner surface of the fluctuation correcting cap, and so that the fluctuation correcting cap can prevent chip particles from entering a gap between the bushing nut and the spindle bolt.
  • Yet another object of the present invention is to provide a master spindle for a tapping machine in which a chuck support member is defined with a tap separation hole for easy separation of a tap from a chuck so that, even when chip particles are introduced into the chuck while tapping is implemented in a vertical direction, since it is possible to push the lower end of the tap out of the chuck by a lever inserted through the tap separation hole, the tap can be reliably separated from the chuck as the occasion demands.
  • Still another object of the present invention is to provide a master spindle for a tapping machine in which auxiliary mounting holes are defined in a flange portion of a bushing nut so that the bushing nut can be mounted to a jig irrespective of the position of the jig.
  • the master spindle for a tapping machine provides advantages in that, since a chuck support member has integral upper and lower ends, drawbacks due to non-concentricity of a chuck support structure in the conventional master spindle can be eliminated, and the length of the entire chuck support structure can be decreased, whereby the fluctuation of the master spindle during tapping is lessened and the precision of tapping work is improved.
  • the chuck support member is defined with a tap separation hole for easy separation of a tap from a chuck, even when chip particles are introduced into the chuck while tapping work is implemented in a vertical direction, it is possible to push the lower end of the tap out of the chuck by a lever inserted through the tap separation hole, whereby the tap can be reliably separated from the chuck as the occasion demands.
  • the bushing nut can be mounted to a jig irrespective of the position of the jig.
  • FIG. 1 is a half sectional view illustrating a conventional master spindle for a tapping machine
  • FIG. 2 is a half sectional view illustrating the master spindle of FIG. 1 in a state in which tapping is implemented in a vertical direction
  • FIG. 3 is a perspective view independently illustrating the bushing nut shown in FIGs. 1 and 2
  • FIG. 4 is a half sectional view illustrating a master spindle for a tapping machine in accordance with an embodiment of the present invention
  • FIG. 5 is a half sectional view illustrating the master spindle of FIG. 4 in a state in which tapping is implemented in a vertical direction;
  • FIG. 6 is a half sectional view illustrating the master spindle according to the present invention, with a fluctuation correcting cap fitted around a chuck support member;
  • FIG. 7 is a half sectional view independently illustrating the fluctuation correcting cap;
  • FIG. 8 is a perspective view illustrating a bushing nut;
  • FIG. 9 is a half sectional view illustrating the master spindle with the bushing nut mounted to a jig placed on a flange portion of the bushing nut. Best Mode [31] [32] Referring to FIG.
  • a master spindle 50 for a tapping machine in accordance with an embodiment of the present invention comprises a chuck 53 having a tap 51 detachably mounted thereto; a chuck support member 55 having the chuck 53 mounted thereto; a spindle bolt 57 fastened to the chuck support member 55 at an upper end thereof; and a bushing nut 59 threadedly coupled to the spindle bolt 57 and positioned below the chuck support member 55.
  • the chuck support member 55 has an upper end to which the chuck 53 is mounted and a lower end to which the spindle bolt 57 is fastened.
  • the upper and lower ends of the chuck support member 55 are integrally formed with each other.
  • the strength of the screw threads of the spindle bolt 57 can be improved, and, as will be described later in detail, it is possible to prevent chip particles 100 from entering the gap between the spindle bolt 57 and the bushing nut 59.
  • the spindle bolt 57 can be used semi-permanently, it is not necessary to employ two separate support members as in the conventional art.
  • an umbrella- shaped chip cover 61 is provided to the lower end of the chuck support member 55.
  • the chip cover 61 prevents chip particles 100 which are generated from a workpiece (not shown), from entering the space between the spindle bolt 57 and the bushing nut 59, even when tapping work is implemented in a vertical direction, so that it is possible to prevent the screw threads of the spindle bolt 57 and the bushing nut 59 from being crushed.
  • the chuck support member 55 is provided with a fluctuation correcting cap 70.
  • the fluctuation correcting cap 70 is defined with an opening 77 into which the chuck support member 55 is fitted so that a circumferential outer surface of the chuck support member 55 is brought into tight contact with a circumferential inner surface 79 of the fluctuation correcting cap 70.
  • the fluctuation correcting cap 70 has a flange portion 75 which is coupled to the bushing nut 59 by locking bolts 81.
  • the fluctuation correcting cap 70 has a cylindrical configuration similar to the chuck support member 55.
  • An O-ring 71 is fitted in the circumferential inner surface 79 of the fluctuation correcting cap 70 adjacent to the upper end of the fluctuation correcting cap 70.
  • An oil inlet hole 73 is defined through the fluctuation correcting cap 70 and communicates with the opening 77.
  • he O-ring 71 serves to occupy a gap between the chuck support member 55 and the fluctuation correcting cap 70, so that, when the chuck support member 55 is raised and lowered relative to the fluctuation correcting cap 70, the fluctuation of the chuck support member 55 can be further lessened.
  • the chuck support member 55 is defined below the chuck 53, with a tap separation hole 63 for easy separation of the tap 51 from the chuck 53.
  • a tap separation hole 63 for easy separation of the tap 51 from the chuck 53.
  • the bushing nut 59 is defined with mounting holes 59b and auxiliary mounting holes 59c. Therefore, as can be readily seen from FIG. 5, in the case in which the jig 91 is located under a flange portion 59a of the bushing nut 59, bolts 83 can pass through the mounting holes 59b and be locked into auxiliary mounting holes 93b of the jig 91 to fasten the bushing nut 59 to the jig 91. At this time, as shown in FIG. 6, as the locking bolts 81 are locked into the mounting holes 95b, the fluctuation correcting cap 70 is fastened to the bushing nut 59.
  • the bushing nut 59 can be fastened to the jig 91.
  • the locking bolts 81 are locked into the auxiliary mounting holes 59c
  • the fluctuation correcting cap 70 is fastened to the bushing nut 59.
  • the mounting holes 59b and the auxiliary mounting holes 59c of the bushing nut 59 allow the bushing nut 59 to be fastened to the jig 91 irrespective of the location of the jig 91.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Turning (AREA)
  • Gripping On Spindles (AREA)
PCT/KR2005/000410 2004-02-19 2005-02-15 Master spindle for tapping machine WO2005080040A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US10/596,037 US20080171605A1 (en) 2004-02-19 2005-02-15 Master Spindle for Tapping Machine
CN200580001197XA CN1859993B (zh) 2004-02-19 2005-02-15 攻丝机主轴
JP2006554020A JP4692904B2 (ja) 2004-02-19 2005-02-15 タッピングマシン用マスタースピンドル

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR10-2004-0010888 2004-02-19
KR1020040010888A KR100466925B1 (ko) 2004-02-19 2004-02-19 탭핑머신용 마스터 스핀들
KR20-2004-0029704 2004-10-21
KR20-2004-0029704U KR200374319Y1 (ko) 2004-10-21 2004-10-21 탭핑머신용 마스터 스핀들

Publications (1)

Publication Number Publication Date
WO2005080040A1 true WO2005080040A1 (en) 2005-09-01

Family

ID=34889491

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2005/000410 WO2005080040A1 (en) 2004-02-19 2005-02-15 Master spindle for tapping machine

Country Status (3)

Country Link
US (1) US20080171605A1 (ja)
JP (1) JP4692904B2 (ja)
WO (1) WO2005080040A1 (ja)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104028855A (zh) * 2014-06-10 2014-09-10 成都大漠石油机械有限公司 一种螺纹纹路的加工工具
CN116900423B (zh) * 2023-06-15 2024-02-13 北京新风航天装备有限公司 舱体外圆周垂直于轴线的螺纹孔钳工气动攻丝工装及方法

Citations (4)

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US4385854A (en) * 1979-08-21 1983-05-31 Miyakawa Industry Co., Ltd. Collet chuck assembly for taps
JPS58165906A (ja) * 1982-03-26 1983-10-01 Fuji Tekkosho:Kk クイツクチエンジドリルチヤツク
KR19980019675A (ko) * 1996-09-02 1998-06-25 박병재 엔진 가공용 태핑 헤드
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Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4385854A (en) * 1979-08-21 1983-05-31 Miyakawa Industry Co., Ltd. Collet chuck assembly for taps
JPS58165906A (ja) * 1982-03-26 1983-10-01 Fuji Tekkosho:Kk クイツクチエンジドリルチヤツク
KR19980019675A (ko) * 1996-09-02 1998-06-25 박병재 엔진 가공용 태핑 헤드
KR19990039238U (ko) * 1998-04-07 1999-11-05 김상재 범용선반용 탭핑지그장치

Also Published As

Publication number Publication date
JP4692904B2 (ja) 2011-06-01
JP2007522950A (ja) 2007-08-16
US20080171605A1 (en) 2008-07-17

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