US20080171605A1 - Master Spindle for Tapping Machine - Google Patents

Master Spindle for Tapping Machine Download PDF

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Publication number
US20080171605A1
US20080171605A1 US10/596,037 US59603705A US2008171605A1 US 20080171605 A1 US20080171605 A1 US 20080171605A1 US 59603705 A US59603705 A US 59603705A US 2008171605 A1 US2008171605 A1 US 2008171605A1
Authority
US
United States
Prior art keywords
support member
chuck
chuck support
spindle
bushing nut
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.)
Abandoned
Application number
US10/596,037
Other languages
English (en)
Inventor
Jeung-Kyun Lee
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of US20080171605A1 publication Critical patent/US20080171605A1/en
Abandoned legal-status Critical Current

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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.
  • chip particles 17 are likely to be introduced into the chuck 5 , whereby the tap 3 may not be easily separated from the chuck 5 due to the presence of the chip particles 17 . Also, while conducting tapping work in the vertical direction, the chip particles 17 are likely to enter a gap between the bushing nut 3 and the spindle bolt 11 , whereby the screw threads of the spindle bolt 11 and the bushing nut 13 can be crushed.
  • 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 master spindle for a tapping machine due to the presence of an umbrella-shaped chip cover, it is possible to prevent chip particles from entering the gap between a bushing nut and a spindle bolt and avoid the breakage of screw threads of the bushing nut and the spindle bolt.
  • 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.
  • the tapping work can be reliably implemented. Also, it is possible to extend the service lives of the bushing nut and the spindle bolt and prevent chip particles generated during tapping from entering the gap between the bushing nut and the spindle bolt.
  • 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.
  • 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 drawbacks provoked due to non-concentricity of a chuck support structure in the conventional master spindle can be overcome, and the length ‘S’ of the entire chuck support structure can be decreased, whereby the fluctuation of the master spindle 50 during tapping is lessened and the precision of tapping work is improved.
  • 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 chuck support member 55 which is integrally coupled to the spindle bolt 57 is brought into tight contact with the circumferential inner surface 79 of the fluctuation correcting cap 70 and can be raised and lowered without fluctuating relative to the fluctuation correcting cap 70 fastened to the bushing nut 59 .
  • the fluctuation correcting cap 70 functions to prevent the chip particles 100 from entering the space between the spindle bolt 57 and the bushing nut 59 .
  • 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 .
  • the 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 oil which flows into the fluctuation correcting cap 70 through the oil inlet hole 75 reduces friction when the chuck support member 55 is rotated relative to the fluctuation correcting cap 70 .
  • 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 59 b and auxiliary mounting holes 59 c . Therefore, as can be readily seen from FIG. 5 , in the case in which the jig 91 is located under a flange portion 59 a of the bushing nut 59 , bolts 83 can pass through the mounting holes 59 b and be locked into auxiliary mounting holes 93 b 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 95 b , 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 59 c
  • the fluctuation correcting cap 70 is fastened to the bushing nut 59 .
  • the mounting holes 59 b and the auxiliary mounting holes 59 c 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)
  • Gripping On Spindles (AREA)
  • Turning (AREA)
US10/596,037 2004-02-19 2005-02-15 Master Spindle for Tapping Machine Abandoned US20080171605A1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
KR1020040010888A KR100466925B1 (ko) 2004-02-19 2004-02-19 탭핑머신용 마스터 스핀들
KR10-2004-0010888 2004-02-19
KR20-2004-0029704U KR200374319Y1 (ko) 2004-10-21 2004-10-21 탭핑머신용 마스터 스핀들
KR20-2004-0029704 2004-10-21
PCT/KR2005/000410 WO2005080040A1 (en) 2004-02-19 2005-02-15 Master spindle for tapping machine

Publications (1)

Publication Number Publication Date
US20080171605A1 true US20080171605A1 (en) 2008-07-17

Family

ID=34889491

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/596,037 Abandoned US20080171605A1 (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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116900423A (zh) * 2023-06-15 2023-10-20 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

Families Citing this family (1)

* 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

Citations (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US328886A (en) * 1885-10-20 Felix gut
US944915A (en) * 1907-12-09 1909-12-28 Litfallah G Sabbag Drilling-machine.
US972155A (en) * 1908-08-18 1910-10-11 Charles G Brown Socket for twist-drills.
US1058654A (en) * 1912-04-11 1913-04-08 Samuel A Barber Spike-driving machine.
US1237064A (en) * 1914-11-27 1917-08-14 American Plaster Drill Co Inc Drill.
US1283740A (en) * 1917-12-27 1918-11-05 Clarence B Groff Drill.
US1398814A (en) * 1921-07-15 1921-11-29 Tanenbaum Michael Drill
US1420915A (en) * 1920-01-09 1922-06-27 Said Fred A Dexter Machine for facing or dressing gate valves
US1461548A (en) * 1921-05-05 1923-07-10 Claude A West Metal-working tool
US1681326A (en) * 1926-11-18 1928-08-21 Leeuw Adolph L De Individual power feed for multiple tapping machines
US2580061A (en) * 1948-09-04 1951-12-25 Denison Eng Co Hydraulic tapping device
US2784267A (en) * 1954-08-16 1957-03-05 Oklahoma Steel Castings Co Inc Lead screw tapper
US2791922A (en) * 1955-08-15 1957-05-14 Gardner Denver Co Power operated tool with positively controlled power feed
US2869153A (en) * 1955-03-01 1959-01-20 Louis E Capek Retractable tap feed mechanism operative upon undue axial force on the spindle
US2946244A (en) * 1958-12-24 1960-07-26 Harlan James Maynard Method and apparatus for mist cooling cutting tools
US3039330A (en) * 1960-09-12 1962-06-19 Reginald J Aspeek Power feed device
US3583821A (en) * 1969-04-02 1971-06-08 Melvin H Shaub Chip catcher
US3587124A (en) * 1969-01-17 1971-06-28 Warner Swasey Co Tool holder
US3690782A (en) * 1969-06-27 1972-09-12 Robert J Petroff Lead-screw tapping head
US3757891A (en) * 1972-07-28 1973-09-11 A P Krieger Tool silencing means
US3788760A (en) * 1971-09-13 1974-01-29 Amada Ltd Tapping head for punch press
US3838934A (en) * 1973-03-02 1974-10-01 R Petroff Machine tool
US4050835A (en) * 1976-02-02 1977-09-27 Aaa Products International Inc. Hydraulic tapping apparatus
US4385854A (en) * 1979-08-21 1983-05-31 Miyakawa Industry Co., Ltd. Collet chuck assembly for taps
US4955984A (en) * 1987-03-03 1990-09-11 Cuevas Levearn F Safety debris catcher
US4986371A (en) * 1990-01-08 1991-01-22 Lowe Wayne L Safety deflector for air hammer and concrete breaker
US5100271A (en) * 1988-03-28 1992-03-31 Brother Kogyo Kabushiki Kaisha Tool driving unit
US5173015A (en) * 1992-01-21 1992-12-22 Maynard Scott D In-die tapping tool
US6322298B1 (en) * 1998-10-22 2001-11-27 Yoshinori Wada Tapping unit
US6648562B1 (en) * 2001-06-08 2003-11-18 Charles D. Calkins Apparatus for tapping a hole in a pipeline
US6814527B1 (en) * 2003-02-28 2004-11-09 Merrion Fleming Debris collection system for use with hole cutting devices

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5633206A (en) * 1979-08-21 1981-04-03 Miyagawa Kogyo Kk Tap collet
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
JP3289298B2 (ja) * 1992-01-21 2002-06-04 ダイキン工業株式会社 ツールのチャック構造
JPH09225711A (ja) * 1996-02-22 1997-09-02 Fuji Seiko Kk 工具保持装置
KR100216448B1 (ko) * 1996-09-02 1999-08-16 정몽규 엔진 가공용 태핑 헤드
KR200195572Y1 (ko) * 1998-04-07 2000-09-01 김상재 범용선반용 탭핑지그장치

Patent Citations (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US328886A (en) * 1885-10-20 Felix gut
US944915A (en) * 1907-12-09 1909-12-28 Litfallah G Sabbag Drilling-machine.
US972155A (en) * 1908-08-18 1910-10-11 Charles G Brown Socket for twist-drills.
US1058654A (en) * 1912-04-11 1913-04-08 Samuel A Barber Spike-driving machine.
US1237064A (en) * 1914-11-27 1917-08-14 American Plaster Drill Co Inc Drill.
US1283740A (en) * 1917-12-27 1918-11-05 Clarence B Groff Drill.
US1420915A (en) * 1920-01-09 1922-06-27 Said Fred A Dexter Machine for facing or dressing gate valves
US1461548A (en) * 1921-05-05 1923-07-10 Claude A West Metal-working tool
US1398814A (en) * 1921-07-15 1921-11-29 Tanenbaum Michael Drill
US1681326A (en) * 1926-11-18 1928-08-21 Leeuw Adolph L De Individual power feed for multiple tapping machines
US2580061A (en) * 1948-09-04 1951-12-25 Denison Eng Co Hydraulic tapping device
US2784267A (en) * 1954-08-16 1957-03-05 Oklahoma Steel Castings Co Inc Lead screw tapper
US2869153A (en) * 1955-03-01 1959-01-20 Louis E Capek Retractable tap feed mechanism operative upon undue axial force on the spindle
US2791922A (en) * 1955-08-15 1957-05-14 Gardner Denver Co Power operated tool with positively controlled power feed
US2946244A (en) * 1958-12-24 1960-07-26 Harlan James Maynard Method and apparatus for mist cooling cutting tools
US3039330A (en) * 1960-09-12 1962-06-19 Reginald J Aspeek Power feed device
US3587124A (en) * 1969-01-17 1971-06-28 Warner Swasey Co Tool holder
US3583821A (en) * 1969-04-02 1971-06-08 Melvin H Shaub Chip catcher
US3690782A (en) * 1969-06-27 1972-09-12 Robert J Petroff Lead-screw tapping head
US3788760A (en) * 1971-09-13 1974-01-29 Amada Ltd Tapping head for punch press
US3757891A (en) * 1972-07-28 1973-09-11 A P Krieger Tool silencing means
US3838934A (en) * 1973-03-02 1974-10-01 R Petroff Machine tool
US4050835A (en) * 1976-02-02 1977-09-27 Aaa Products International Inc. Hydraulic tapping apparatus
US4385854A (en) * 1979-08-21 1983-05-31 Miyakawa Industry Co., Ltd. Collet chuck assembly for taps
US4955984A (en) * 1987-03-03 1990-09-11 Cuevas Levearn F Safety debris catcher
US5100271A (en) * 1988-03-28 1992-03-31 Brother Kogyo Kabushiki Kaisha Tool driving unit
US4986371A (en) * 1990-01-08 1991-01-22 Lowe Wayne L Safety deflector for air hammer and concrete breaker
US5173015A (en) * 1992-01-21 1992-12-22 Maynard Scott D In-die tapping tool
US6322298B1 (en) * 1998-10-22 2001-11-27 Yoshinori Wada Tapping unit
US6648562B1 (en) * 2001-06-08 2003-11-18 Charles D. Calkins Apparatus for tapping a hole in a pipeline
US6814527B1 (en) * 2003-02-28 2004-11-09 Merrion Fleming Debris collection system for use with hole cutting devices

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116900423A (zh) * 2023-06-15 2023-10-20 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

Also Published As

Publication number Publication date
WO2005080040A1 (en) 2005-09-01
JP2007522950A (ja) 2007-08-16
JP4692904B2 (ja) 2011-06-01

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Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION