US3717892A - Tapping attachment for numerical control - Google Patents

Tapping attachment for numerical control Download PDF

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Publication number
US3717892A
US3717892A US00026894A US3717892DA US3717892A US 3717892 A US3717892 A US 3717892A US 00026894 A US00026894 A US 00026894A US 3717892D A US3717892D A US 3717892DA US 3717892 A US3717892 A US 3717892A
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United States
Prior art keywords
attachment
clutch
tapping
spindle
drive
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.)
Expired - Lifetime
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US00026894A
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English (en)
Inventor
A Johnson
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.)
Tapmatic Corp
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Tapmatic Corp
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Filing date
Publication date
Application filed by Tapmatic Corp filed Critical Tapmatic Corp
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Publication of US3717892A publication Critical patent/US3717892A/en
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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
    • B23G1/46—Equipment or accessories specially designed for machines or devices for thread cutting for holding the threading tools
    • B23G1/465—Equipment or accessories specially designed for machines or devices for thread cutting for holding the threading tools comprising arrangements for reversing the rotation of the tool
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/65—Means to drive tool
    • Y10T408/675—Means to drive tool including means to move Tool along tool-axis
    • Y10T408/6771—Means to drive tool including means to move Tool along tool-axis with clutch means
    • Y10T408/6776—Actuated by Tool movement
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/70—Tool or tool-support with torque-applying clutch
    • Y10T408/72—Friction clutch

Definitions

  • Jam/552v TAPPING ATTACHMENT FOR NUMERICAL CONTROL SUMMARY OF THE INVENTION The invention is a tapping attachment of the type having free axial float and providing for both direct and reverse drive. Practical improvements are provided in the device as described in detail herein, particularly adapting it to numerical or computer control.
  • the improvements of the herein invention are adapted to realizing the objective that the attachment is capable of doing or accomplishing movements that could be accomplished by a human arm manipulating the attachment.
  • the realization of this end is a broad objective of the invention.
  • a number of improvements are provided in it.
  • the drive is by way of planetary gears in such a way that the driving speed is the same in direct drive as in reverse drive.
  • Spring biased clutch driver members are provided for both direct and reverse drive.
  • An adjustment collar is provided on the attachment which cooperates with the tapping spindle so that the degree or magnitude of axial float can be adjusted.
  • This adjustment in combination with the spring biased clutch driver members makes it possible to have a very narrow neutral zone or area between direct and reverse drive thereby greatly facilitating the adaption of the attachment to numerical or computer control and to the elimination of chattering or knocking both when engaging and disengaging with respect to both direct and reverse drive.
  • An object is to provide mechanism whereby the speed of drive in direct drive and reverse drive is the same.
  • Another object is to provide mechanism to eliminate chattering or knocking both with respect to direct drive and reverse drive clutching and declutching.
  • Another object is to provide for adjustment of the magnitude or degree of axial float.
  • Another object is to provide mechanism whereby after tapping, at the limit of travel, the clutch will automatically disengage to allow shifting into reverse gear.
  • a further object is the realization of a very simple tool of this type, even though it has the improved characteristics set forth with a very few parts subject to wear.
  • Another object of the invention is the realization of a simplified mechanism in that the upper part of the housing itself becomes the planetary member that is held against rotation by way of a radial arm and this is a very distinctive advantage when the mechanism is controlled by a computer.
  • Another object of the invention is to realize a mechanism having multiples of identical parts which are easy to fabricate and which can be fabricated by way of powdered metal processes.
  • a further object of the invention is to realize an attachment of this type in which it is not necessary to provide a spring clutch for reasons which will be made more clear hereinafter.
  • a further object is to realize a tool of this type wherein the danger of damage or breakage of the tool when operated under numerical or computer control is eliminated or greatly minimized.
  • FIG. 1 is a view of a preferred form of the tapping attachment mounted on a machine
  • FIG. 2 is a cross-sectional view of the'tapping attachment of FIG. 1;
  • FIG. 3 is a sectional view taken along the line 3-3 of FIG. 2;
  • FIG. 4 is a sectional view taken along the line 4-4 of FIG. 2;
  • FIG. 5 is a detail exploded view of the spring biased clutch driver members
  • FIG. 6 is an exploded view of the major components of the attachment.
  • numeral 10 designates a machine tool with which the attachment may be used. It has an arbor I1 and the tapping attachment of the invention is designated generally at 12.
  • Numeral 13 designates a radial holding arm which engages a stop rod or column 14 which will hold the body of the attachment against rotation as will be described more in detail hereinafter.
  • Numeral l6 designates the chuck on the tapping spindle l8 and the tap itself is designated at 20.
  • the tool arbor 11 is threaded as shown in FIG. 2 and it engages a bore 24 in the body 26.
  • Numeral 30 designates a cylindrical housing having a top cover or cap 32 held on by screws 34 and 36 and from which extends the radial arm 13.
  • the housing 30 has a bore 40 and a counter bore 42.
  • the body 26 has a portion 46 of smaller diameter and positioned within the bore 42 between housing 30 and body 26 and engaging square shoulder 50 between the parts of body 26 of different diameter, is a ball-bearing designated generally at 52 and which comprises the usual ball races and interposed balls.
  • the parts of the attachment are shown assembled in FIG. 2 and in the cross sectional views, and the'parts are shown individually in the exploded view, FIG. 6.
  • the body 26 has counter bore 60 (see FIG. 6) and an extending skirt 62. It has axial ways as shown at 63 which engage with and drive the direct drive clutch driver member as will be described. The relationship of the parts may be observed by considering the exploded view FIG. 6 with the assembled view.
  • Numeral 68 designates a cylindrical cage member within the housing 30 which supports the planetary gears of the gear drive.
  • This cage has a concentric cylindrical part 70 of lesser axial length which provides bearing surfaces as will be described the shafts or arbeta of the planetary drive gears.
  • the member 70 is integral with the outer cylindrical part 74 of the cage 78 being contected thereto by the radial web 72.
  • the outer cylindrical part 74 of the cage has in it on the inside surfaces, equally spaced from each other three axial rectangular ways as designated at 76, 78 and 80 which provide for spaces to receive the three planetary drive gears as will be described.
  • the three planetary drive gears are shown best in FIG. 4 as designated at 82, 84 and 85 positioned as shown between the inner and outer parts 70 and 74 of the cage 68.
  • These gears have shafts or arbors as designated at 90, 92 and 94.
  • the outer ends of these shafts are received in bores formed in the part 74 of the cage 76 as designated at 100, 102 and 104.
  • the inner ends of these shafts or arbors are received in radial bores formed in the inner cylindrical member or part 70 of the cage 68 as designated at 108, 110 and 112.
  • the cage 68 has an axial groove 120 whereby it can be keyed by way of a key to a corresponding axial groove 122 on the inside of the housing 30 to hold the cage against rotation.
  • the planetary gears are bevel gears and cooperating with them are two bevel drive gears including the direct drive bevel gear 126 and the reverse drive bevel gear 128.
  • the opening in these bevel gears are of a configuration to key them to the clutch driver members.
  • Numeral 132 designates the clutch driver member for direct drive
  • numeral 134 designates the clutch driver member for reverse drive. It will be observed that the clutch driver members are alike but are in in verted positions with respect to each other in the assembly. In the fabrication and production of parts as will be observed, these two parts are identical, except that part 134 does not have web 136 shown in FIG. 6, as it must slide over spindle 18, as will be referred to again presently.
  • the clutch driver member 132 is like the clutch driver member 85 of U.S. Pat. No. 3,397,588. It is cylindrical having an intermediate transverse web 136 as may be seen in FIG. 2. It has three angularly spaced lugs 138, 140 and 142. It has an extending skirt 144 and formed in the skirt are three equally angularly spaced pin receiving openings or cutouts, one of which may be seen at 150. (See FIG. 6) Adjacent to one side of this cutout is an axial tapered surface 152 and on the opposite side of the cutout is a tapered surface leading to the next opening or cutout as designated at 154. Inasmuch as the clutch driver member for reverse drive is identical with the clutch driver member 132 it need not be described in detail. Clutch drive member 132 engages with and is driven by body 26 as may be observed from FIG. 6.
  • the opening in direct drive gear 126 is in the form of a bore 158 and there are equally spaced cutouts of larger radius or diameter designated at 160, 162 and 164 configurated to accommodate or receive the lugs 138, 140 and 142 on the clutch driver member 132.
  • the bevel gear 128 for reverse drive is identical to the gear 126 it need not be described in detail. It should be observed that in the fabrication and production of the attachment these two gears being alike, reduces the total number of different parts.
  • FIG. 2 shows the assembled relationship of the planetary gears, the direct drive gear 126 and the direct drive clutch driver member 132.
  • a disc Positioned at the end of the bore 24 in the body 26 is a disc and in between this disc and the end of the arbor 11 is a snap ring 172.
  • the disc 170 has two spaced openings 174 and 176 and booked through these openings is a hook 180 on the end of a suspension spring 182 which has hook 184 at its opposite end which books into the end of support member 186 that extends through a ball bearing 190 in a counter bore 192 in the cylindrical end part 194 of the spindle 18, the spindle 18 having axial bore 196 through which spring 182 extends.
  • the spindle 18 At the upper end of the spindle 18 are three angularly spaced radial bores in which are received radial drive pins, two of which are shown at 200 and 202 in FIG. 5. These pins are adapted to cooperate with the cutouts previously described in the direct drive clutch driver member 132 and the reverse clutch driver member 134. It is to be observed that there is a coil spring 206 positioned in the bore 60 of the body 26 between the disc 170 and the direct clutch driver member 132 whereby this member is allowed to move against this bias in the manner described in detail in the prior U.S. Pat. No. 3,397,588. Within the upper end of the drive spindle 18 there is provided bushing 210 against which the inner ends of the drive pins like 200 abut.
  • numeral 220 designates the lower support body.
  • the reverse clutch driver member 134 engages in the opening of the reverse drive bevel gear 128 in the same manner that the direct drive clutch driver member 132 engages in the direct clutch drive gear 126.
  • the body 220 has another cylindrical part 222; a bore 224 and extending flange 226 which in the assembled position shown in FIG. 2 is over ball bearing 230 which is interposed between the body 220 and the housing 30.
  • the ball bearing 230 is positioned by a snap ring 232 received in annular groove 234 in the housing 30. (See FIG. 2)
  • the body 220 has cylindrical part 238 of smaller diameter and extending threaded cylindrical part 240 as shown.
  • the upper cylindrical part 222 of the body 220 has three equally spaced axial grooves 244, 246 and 248 adapted to receive the radial lugs on the reverse drive clutch member 134.
  • the body 220 has a bore 250 (see FIG. 2) and received in this bore is a cylindrical member or bushing 252 having a bore 254 and an upper counter bore 256.
  • coil spring 260 which corresponds to the spring 206, this being a biasing spring which biases the reverse drive clutch driver member 134 permitting it to move axially in the same way and for the same purpose as the upper clutch driver member 132 moves.
  • Numeral 262 designates an adjustment collar which has internally threaded bore 264, the collar being threaded on to the threaded part 240 of the body 220.
  • This collar is in the form of a cap having an end part which has a bore 266 through which the spindle 18 extends.
  • the spindle 18 can float as described in the previous patents, being suspended by the spring 182.
  • the amount of this float is adjustable by adjusting the position of collar 262 on the body 220, that is by way of adjusting the position of the end of the collar relative to the chuck 194 on the end of the spindle, so that the axial float may be adjusted from any maximum amount to a minimum of l/l6inch for example, depending on the size of the drive pins.
  • Collar 262 can engage thrust bearing 263 limiting the degree of freedom of float while in direct drive.
  • the tap holding spindle has the characteristic of free axial float which is limited as described in the foregoing, the axial float being like that described in the previous patents.
  • the tap follows its own lead. No lead pressure is applied.
  • the machine moves the machine spindle behind the lead of the tap until the desired depth is reached.
  • the direct drive bevel gear 126 is driven from the body 26 by reason of its engagement therewith as described in the foregoing.
  • Body 26 drives the direct drive clutch driver member 132 by reason of its engagement therewith as described. In operation, it will be understood that the attachment as it starts tapping, moves forwardly relative to the housing 30.
  • the adjustment collar 262 can be adjusted to a spacing as between it and the chuck 194 so that when the tool reaches the limit of its travel, that is, as determined by the setting of collar 262, the drive pins such as the pins 220 will feed out of the clutch driver member 132 and this may represent movement of only one-eighth inch, for example, at which time the drive pins are then in a neutral position between the direct drive clutch drive member 132 and the reverse drive clutch driver member 134.
  • the direct drive clutch driver member disengages without knocking or chattering as described in US. Pat. No. 3,397,588 and the reverse drive clutch driver member engages with the pins similarly without chattering or knocking because it too is cushioned by a biasing spring this being the spring 260.
  • the neutral position of the spindle in between direct and reverse drive is very sensitive, the neutral position being very narrow.
  • the neutral position or zone can be as narrow as half the diameter of the radial driving pins. This very significantly adapts the attachment and accommodates it to numerical or computer control in that the amount of relative axial movement of the spindle to change between direct and reverse is reduced to a minimum. lt feeds in and out at the same rate and drives at the same speed in direct and reverse drive.
  • the collar 262 can serve the same purpose as a spring clutch which is not required in this attachment.
  • a spring clutch is not desirable in a computer or numerical control application because this might result in holes being tapped at 3 or 4 threads and others at 5 or 6 for example, depending at what torque load the clutch started slipping.
  • the computer is programmed to cause the tool to tap into the hole, the specified amount.
  • the adjustable collar 262 is adjusted with respect to the chuck on spindle so that when the tap has reached the specified depth movement of the spindle of the machine is stopped without stopping the rotation. The tap is still turning in the work and it pulls the spindle down, the small amount necessary to bring the drive pins intoneutral position after which the engagement can then be made in the manner described for reverse operation.
  • a tapping attachment having a body member adapted to be rotated about an axis thereof, a tapping spindle mounted for rotation about said axis and for free axial movement along said axis relative to said body member, and positive drive clutch means for drivingly connecting said body member to said tapping spindle, the improvement comprising;
  • said clutch means being defined by relatively axially movable elements on said body member and tapping spindle, respectively, said elements being in mutually driving engagement throughout a range of relative axial movement and being relatively axially movable in one direction to disengage said clutch means;
  • biasing means normally biasing said elements to move into clutch engaging relation
  • adjustable limiting means on said attachment for predetermining the extent of axial movement of said elements in a clutch engaging direction for presetting the magnitude of relative axial movement from full clutch engagement to disengagement thereof.
  • adjustable means comprises a member threadedly adjustable relative to the body member and positionable to be engaged by the tapping spindle to limit the extent of axial movement thereof.
  • a tapping attachment as in claim 3 including reverse driving means whereby the tapping spindle is driven atthe same speed in direct drive as in reverse drive.
  • a tapping attachment as in claim 4 wherein the drive to the spindle comprises a planetary gear transmission including planetary gears and a direct drive gear and a reverse drive gear of the same size.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping On Spindles (AREA)
  • Drilling And Boring (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Structure Of Transmissions (AREA)
US00026894A 1970-04-09 1970-04-09 Tapping attachment for numerical control Expired - Lifetime US3717892A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US2689470A 1970-04-09 1970-04-09

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US3717892A true US3717892A (en) 1973-02-27

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US00026894A Expired - Lifetime US3717892A (en) 1970-04-09 1970-04-09 Tapping attachment for numerical control

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US (1) US3717892A (enrdf_load_stackoverflow)
CH (1) CH512958A (enrdf_load_stackoverflow)
DE (1) DE2042344C3 (enrdf_load_stackoverflow)
FR (1) FR2092216A5 (enrdf_load_stackoverflow)
GB (1) GB1304234A (enrdf_load_stackoverflow)
SE (1) SE370033B (enrdf_load_stackoverflow)

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3840928A (en) * 1972-06-03 1974-10-15 Lechler Apparatebau Kg Tool holder for lathes
US3998565A (en) * 1974-01-09 1976-12-21 Daisyowa Seiki Co., Ltd. Tapper incorporating reverse rotation mechanism
DE2612998A1 (de) * 1975-07-28 1977-02-03 Tapmatic Corp Zusatzgeraet fuer eine bohrmaschine zum gewindebohren und kupplung fuer dieses geraet
US4028763A (en) * 1974-09-20 1977-06-14 Al Jenner Tap holder
US4031584A (en) * 1976-06-08 1977-06-28 John Khachigian Threading attachment for turning machines
US4123192A (en) * 1977-10-11 1978-10-31 Ruland Frederick W Tapping attachment for a machine tool
DE2918957A1 (de) * 1978-05-15 1979-11-29 Taizo Kato Gewindebohrspindel
US4277209A (en) * 1979-12-03 1981-07-07 Erickson Tool Company Threading attachment
USD261392S (en) 1978-12-15 1981-10-20 Miyakawa Industry Company, Limited Spindlecase attachment for tapping machines to change the rotation of the tool
USD262034S (en) 1977-12-27 1981-11-24 Miyakawa Industry Company, Limited Spindlecase attachment for tapping machines to change the rotation of the tool
DE3023323A1 (de) * 1980-06-21 1982-03-04 Kato Kohki K.K., Kobe Gewindebohrspindel
US4461124A (en) * 1982-02-26 1984-07-24 The Boeing Company Automatic or manual four-axes sanding machine system for sanding and/or finishing a vertically held contoured part
US4531865A (en) * 1982-07-21 1985-07-30 Tapmatic Corporation Tapping attachment adapted for numerical computer control
US4709464A (en) * 1986-03-06 1987-12-01 Speroni Richard J Indexing mechanism for computer controlled milling machines
US5096343A (en) * 1991-06-13 1992-03-17 Luu Ching Muh Internal thread forming apparatus with an automatic rotational direction change controller
US5131794A (en) * 1991-06-27 1992-07-21 Tapmatic Corporation Dog drive for tapping attachments
US5704738A (en) * 1996-05-17 1998-01-06 Sugino; Shigeru Tool attachment assembly
US5865575A (en) * 1996-09-24 1999-02-02 The Tapmatic Corporation Self-reversing tapping attachment with shock absorption
WO1999010127A3 (en) * 1997-08-26 1999-08-05 Tapmatic Corp Improved parts and subassemblies for self-reversing tapping attachments
WO1999039856A1 (en) * 1998-02-09 1999-08-12 The Tapmatic Corporation Improved parts and subassemblies for self-reversing tapping attachments
US20090257837A1 (en) * 2008-04-10 2009-10-15 Honda Motor Co., Ltd. Threading method and threading apparatus
US20110211925A1 (en) * 2010-02-25 2011-09-01 Emuge-Werk Richard Glimpel Gmbh & Co. Kg Fabrik Fur Prazisionswerkzeuge Method for Generating a Thread by a Tool machine, Coupling Device and Tool Machine
US11465220B2 (en) 2018-09-30 2022-10-11 Wilson Tool International Inc. Driving system for machining tools or other tooling usable with metal-fabricating presses or other machines

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2173729B (en) * 1985-04-18 1988-12-21 Julien Jean Louis Lankry Tools for use in tightening or/removing screw-threaded fasteners
US5628593A (en) * 1994-03-28 1997-05-13 Tapmatic Corporation Readily disassembleable tapping attachment with quick change replaceable and maintainable parts and method
EP0720886B1 (en) * 1995-01-09 1999-12-01 Daishowa Seiki Co., Ltd. Tapper mechanism

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US332436A (en) * 1885-12-15 John h
US1127754A (en) * 1913-10-17 1915-02-09 John J Grant Nut-machine.
US1915542A (en) * 1931-12-15 1933-06-27 American Mach & Foundry Tap chuck
US2287192A (en) * 1940-03-27 1942-06-23 Crane Co Threading head for machine tools
US2848239A (en) * 1954-11-18 1958-08-19 Erickson Tool Co Floating tool holder
US3075398A (en) * 1959-11-04 1963-01-29 Supreme Products Corp Threading attachment
US3214773A (en) * 1963-01-10 1965-11-02 Erickson Tool Co Tap chuck with adjustable torque release
US3226993A (en) * 1959-12-19 1966-01-04 Svenska Prec Sverktyg Ab Thread-cutting apparatus
US3397588A (en) * 1966-03-21 1968-08-20 Allan S. Johnson Drive for a tapping attachment
US3579688A (en) * 1969-04-28 1971-05-25 Chicago Roller Skate Co Tap holder

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US332436A (en) * 1885-12-15 John h
US1127754A (en) * 1913-10-17 1915-02-09 John J Grant Nut-machine.
US1915542A (en) * 1931-12-15 1933-06-27 American Mach & Foundry Tap chuck
US2287192A (en) * 1940-03-27 1942-06-23 Crane Co Threading head for machine tools
US2848239A (en) * 1954-11-18 1958-08-19 Erickson Tool Co Floating tool holder
US3075398A (en) * 1959-11-04 1963-01-29 Supreme Products Corp Threading attachment
US3226993A (en) * 1959-12-19 1966-01-04 Svenska Prec Sverktyg Ab Thread-cutting apparatus
US3214773A (en) * 1963-01-10 1965-11-02 Erickson Tool Co Tap chuck with adjustable torque release
US3397588A (en) * 1966-03-21 1968-08-20 Allan S. Johnson Drive for a tapping attachment
US3579688A (en) * 1969-04-28 1971-05-25 Chicago Roller Skate Co Tap holder

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3840928A (en) * 1972-06-03 1974-10-15 Lechler Apparatebau Kg Tool holder for lathes
US3998565A (en) * 1974-01-09 1976-12-21 Daisyowa Seiki Co., Ltd. Tapper incorporating reverse rotation mechanism
US4028763A (en) * 1974-09-20 1977-06-14 Al Jenner Tap holder
DE2612998A1 (de) * 1975-07-28 1977-02-03 Tapmatic Corp Zusatzgeraet fuer eine bohrmaschine zum gewindebohren und kupplung fuer dieses geraet
US4031584A (en) * 1976-06-08 1977-06-28 John Khachigian Threading attachment for turning machines
US4123192A (en) * 1977-10-11 1978-10-31 Ruland Frederick W Tapping attachment for a machine tool
DE2834896A1 (de) * 1977-10-11 1979-04-12 Frederick W Ruland Gewindebohrvorsatz
FR2405778A1 (fr) * 1977-10-11 1979-05-11 Ruland Frederick Dispositif a tarauder pour machine-outil
USD262034S (en) 1977-12-27 1981-11-24 Miyakawa Industry Company, Limited Spindlecase attachment for tapping machines to change the rotation of the tool
DE2918957A1 (de) * 1978-05-15 1979-11-29 Taizo Kato Gewindebohrspindel
USD261392S (en) 1978-12-15 1981-10-20 Miyakawa Industry Company, Limited Spindlecase attachment for tapping machines to change the rotation of the tool
US4277209A (en) * 1979-12-03 1981-07-07 Erickson Tool Company Threading attachment
DE3023323A1 (de) * 1980-06-21 1982-03-04 Kato Kohki K.K., Kobe Gewindebohrspindel
US4461124A (en) * 1982-02-26 1984-07-24 The Boeing Company Automatic or manual four-axes sanding machine system for sanding and/or finishing a vertically held contoured part
US4531865A (en) * 1982-07-21 1985-07-30 Tapmatic Corporation Tapping attachment adapted for numerical computer control
US4709464A (en) * 1986-03-06 1987-12-01 Speroni Richard J Indexing mechanism for computer controlled milling machines
US5096343A (en) * 1991-06-13 1992-03-17 Luu Ching Muh Internal thread forming apparatus with an automatic rotational direction change controller
US5131794A (en) * 1991-06-27 1992-07-21 Tapmatic Corporation Dog drive for tapping attachments
US5704738A (en) * 1996-05-17 1998-01-06 Sugino; Shigeru Tool attachment assembly
US5865575A (en) * 1996-09-24 1999-02-02 The Tapmatic Corporation Self-reversing tapping attachment with shock absorption
WO1999010127A3 (en) * 1997-08-26 1999-08-05 Tapmatic Corp Improved parts and subassemblies for self-reversing tapping attachments
WO1999039856A1 (en) * 1998-02-09 1999-08-12 The Tapmatic Corporation Improved parts and subassemblies for self-reversing tapping attachments
US20090257837A1 (en) * 2008-04-10 2009-10-15 Honda Motor Co., Ltd. Threading method and threading apparatus
US20110211925A1 (en) * 2010-02-25 2011-09-01 Emuge-Werk Richard Glimpel Gmbh & Co. Kg Fabrik Fur Prazisionswerkzeuge Method for Generating a Thread by a Tool machine, Coupling Device and Tool Machine
US11465220B2 (en) 2018-09-30 2022-10-11 Wilson Tool International Inc. Driving system for machining tools or other tooling usable with metal-fabricating presses or other machines

Also Published As

Publication number Publication date
CH512958A (de) 1971-09-30
GB1304234A (enrdf_load_stackoverflow) 1973-01-24
FR2092216A5 (enrdf_load_stackoverflow) 1971-01-21
DE2042344B2 (de) 1974-07-04
SE370033B (enrdf_load_stackoverflow) 1974-09-30
DE2042344A1 (de) 1971-10-28
DE2042344C3 (de) 1975-02-27

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