US3820180A - Automatic lever controlled die head - Google Patents

Automatic lever controlled die head Download PDF

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Publication number
US3820180A
US3820180A US00349324A US34932473A US3820180A US 3820180 A US3820180 A US 3820180A US 00349324 A US00349324 A US 00349324A US 34932473 A US34932473 A US 34932473A US 3820180 A US3820180 A US 3820180A
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US
United States
Prior art keywords
lever
work
trigger
chasers
members
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
Application number
US00349324A
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English (en)
Inventor
O Birkestrand
J Haas
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.)
Collins Machinery Corp
Original Assignee
Collins Machinery Corp
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 Collins Machinery Corp filed Critical Collins Machinery Corp
Priority to US00349324A priority Critical patent/US3820180A/en
Priority to GB3135473A priority patent/GB1381215A/en
Priority to DE2339778A priority patent/DE2339778C3/de
Priority to JP8856073A priority patent/JPS5347958B2/ja
Priority to FR7330580A priority patent/FR2224237B1/fr
Application granted granted Critical
Publication of US3820180A publication Critical patent/US3820180A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B23G1/22—Machines specially designed for operating on pipes or tubes
    • 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
    • B23G5/00—Thread-cutting tools; Die-heads
    • B23G5/08—Thread-cutting tools; Die-heads with means for adjustment
    • B23G5/10—Die-heads
    • B23G5/12—Die-heads self-releasing
    • 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
    • Y10T408/83—Tool-support with means to move Tool relative to tool-support
    • Y10T408/85—Tool-support with means to move Tool relative to tool-support to move radially
    • Y10T408/852—Tool-support with means to move Tool relative to tool-support to move radially with Tool releasing trigger
    • Y10T408/853—Tool-support with means to move Tool relative to tool-support to move radially with Tool releasing trigger and separate Tool setting means
    • 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
    • Y10T408/83—Tool-support with means to move Tool relative to tool-support
    • Y10T408/85—Tool-support with means to move Tool relative to tool-support to move radially
    • Y10T408/858—Moving means including wedge, screw or cam
    • Y10T408/859—Rotary cam
    • Y10T408/8591—Scroll plate
    • Y10T408/85918—Scroll plate with adjustable means to limit scroll movement

Definitions

  • a work threading tool includes a lever movable between an operating position in which thread chasers are advanced to work threading position and release position in which the Chasers are in retracted position; and trip mechanism operatively connected with the lever to respond to predetermined relative endwise travel of the threaded work to effect automatic displacement of the lever from operating to release position and consequent retraction of the chasers.
  • This invention relates generally to apparatus for cutting threads of different sizes on work such as pipe. More particularly it concerns inprovements in the indexing or adjusting of thread chasers to cut different sized threads on rotating pipe, and the automatic release of such chasers when threading is completed.
  • Threading of pipe ends or the like is typically carried out while the pipe is clamped and rotated.
  • US. Pat. No. 3,274,627 to Behnke describes apparatus for accomplishing such threading; however there is need for improvement in indexing of the thread cutting chasers and for automatic retraction of the chasers when a desired thread length has been cut. There is also need for the unusual improvements in structure, mode of operation and results as are now afforded by the present invention.
  • a work threading tool embodying the invention comprises first and second generally annular and axially relatively rotatable members, one of which carries thread chaser means to be advanced toward and retracted from work received generally axially of the members; operating means interconnecting the members and including a manually operable lever movable between an operating position in which the members are relatively moved to advance the chasers to work threading position, and release position in which the members are relatively moved to retract the chasers; and trip mechanism operatively connected with the lever to be responsive to travel of the threaded work to predetermined position relative to the body and housing members to effect automatic displacement of the lever from operating to release position.
  • the trip mechanism may include a trigger projecting intowork engaging alignment with a work receiving opening defined by the members, and a trigger controlled lever actuator movable to displace the lever to release position in response to predetermined displacement of the trigger by the work.
  • Additional objects include the provision of a spring urged plunger to be released when the trigger is engaged and displaced by the work, the plunger urging the manually operable lever to release position; the adjustable connection of the manually operable lever with the body member so as to define different thread chaser positions corresponding to different thread diameter to be cut when the lever is in operating position; the provision for fine adjustment of lever connection to the housing member to in turn provide for fine control of chaser positioning; the provision for adjustment of trigger positioning in the direction of work relative travel; and provision for movement of the trigger out of the path of the work to allow continuous threading.
  • FIG. I is a side elevation showing apparatus for mounting and rotating a pipe, together with the apparatus for precision threading the pipe in accordance with the invention
  • FIG. 2 is an enlarged elevation, partly broken away, taken on lines 2-2 of FIG. 1;
  • FIGS is a top plan view of the FIG. 2 apparatus
  • FIG. 4 is a section on lines 4-4 of FIG. 2;
  • FIG. 5 is a section on lines 55 of FIG. 4;
  • FIG. 6 is an enlarged fragmentary section on lines 6-6 of 'FIG. 2;
  • FIG. 7 is an enlarged fragmentary section on lines 77 of FIG. 2;
  • FIG. 8 is a view like FIG. 2 but showing the thread chasers in retracted position.
  • the apparatus for mounting and rotating the pipe includes a table 10 supported on suitable legs 11, and carrying a drive generally indicated at 12.
  • the latter includes an electric motor 13 driving a pinion gear M, which in turn drives a large ring gear 15 which is supported for rotation by the structure 16.
  • a pipe to be threaded is shown at 17 extending generally horizontally through the drive 12 to be gripped by suitable jaws 18 at opposite ends of the drive, and in response to rotation of the ring gear 15, there being suitable camming mechanism, not shown, to cause the jaws 18 to pivot inwardly to grip the pipe when the drive is operated.
  • the assembly shown generally at 19 may be characterized as pipe threading apparatus mounted on a suitable carrier 20 which may be movable 'endwise along the table 10 as indicated by the arrows 21.
  • the assembly 19 includes an annular housing member 22 forming a through opening 23 to receive the pipe 17 extending generally horizontally for rotation about the first axis 24.
  • Thread chaser means such as thread chaser units seen at 25 is carried by the housing mem ber and disposed about the axis 24 for cutting presentment to the pipe, as illustrated in FIGS. 2 and 8.
  • the chaser units are shown as received within radial slots 26 cut in the bosses 27 which appear in FIG. 2. These slots 26 open toward the front side of the housing facing an annular body member 28 which likewise forms a pipereceiving through opening 29 in registration with the housing opening 23.
  • the body member 28 is rotatable about the axis 24 while it is retained in the position shown in FIG. 4 by the housing member 22 and the retaining ring 30, a
  • the body member 28 carries a series of cams spiraling about the axis 24 and located to effect simultaneous inward advancement, or outward retraction, of the chaser units 25 upon relative rotation of the body and housing members.
  • the cams are formed by the spiral grooves 34 cut in the face block accessof'work chips tofactuatorSOti A 35 of the body at equal intervalsabout axis24, the
  • pins 38 are in intermediate position, corresponding to the positions of the units in FIG. 2 for threadingpipe] 17.
  • the chaser units 25 are likewise retracted as, to example, is illustrated in FIG. 8.
  • operating means In accordance with the invention, operating means.
  • bers and includes a manually operable lever 41 movable between an operating position, as for example is seen. in FIG. 2 in which the members 22 and 28 have been relatively moved to advance the chasers25 to work threading position, and release position, as for example is seen in FIG. 8 in which themembers 22andf I 28 have been relatively moved to retract the Chasers" from work threading position.
  • trip mechanism is operatively connected with the lever to be responsive
  • the operating means interconnecting the housing and body members 22 and 28 also includes structure connected .with the lever, and selectively connectible thread chaser advancement when the lever is movedto operating position, as seenfinFlG'.
  • ZLSuchstructure may, with unusual advantageJnclisde aselector pin; as
  • the pin 66 includes a knob 66bwhich may be retracted to with-' draw the nose 66a from any of theholes 6:7a-67a,
  • the trip mechanism may with unusual advantageincludel a trigger 42 ter of the thread tobe cut by the chasers.
  • the holes 67n-67a in FIG. 5 are designated to correspond to threaddiameters 2 inch, 1% inch, 1%
  • a trigger controlled.leveractuator is movable to displace the lever 41. in response to predetermined displacement-of the trigger by the work.
  • the trigger 42 may comprise another lever having'piv otalconnection with the member 22 to be swingable in the general direction of the axis 24 (i.e. in the direction of arrow 46) in response to endwise travel of the work 'following'initial.engagementof the work with the trigger.
  • Such pivotal connectio'n' may advantageously include a shaft 47 having a reduced portion 47a to which the trigger fulchrum portion 48 has. loose connection
  • lever pin 63 is tumable in the lever extensionAs a result, ro-
  • Spring 49 is shown as received on a portion of shaft 47 projecting within a bore 51 in housing member, 22.
  • the lever as described, the lever "retracts. to the position asseen in'FIGi. '8, wherein a stop pin 73 en gages a side 94a of boss74 projecting from housing. member '22 to limit upward retraction of thelever4l.
  • Fine control ofrelative rotation of the men-ism 22 and28, and consequently of thread: chaser advanced positioning may also be provided, in. accordance with a further. aspect of the invention.
  • extension 63a of pin 63 extends eccentrically relative to that pin, i.e. the axis 76 of extension; 631; being offset 7 from the axis 77 of pin 63. Further, extension 63a is rotatable in the boss 74, as byturning the adjustment.
  • head. 78 (notched at 78a to receive a tool79), whereas tary adjustment of head 78 achieves fine control adjustment of members 22 and 28, in operating position of V l the lever 41, and once the correct adjustment is obtained, it is fixed as, by tightening screw 81 which clamps the bifurcated arms 74b of the bossabout the extension 63a.
  • adjustable means is provided to preliminarily locate the trigger to be initially engaged by the workyAs seen in FIG.
  • such adjustable means may include a fastener 82 shaft movement displaces a catch 54 on the left end of '7 the shaft from a notch 55 in the actuator plunger sleeve 56, allowing springs 57 and 57awithin the plunger to displace it endwise outwardly, relative to guide bore 58 formed in member 22, the opposite ends ol' th esprings bearing against bore internal shoulder 59 and a washer 60 within the sleeve.
  • Such plunger movement causes the outer nose end 61 of the plunger (in the shape of a convex bearing) to displace the manual lever inner,
  • extension 4111 outwardly, as indicated by arrow 62 in FIG. 8.
  • the manual levenextension is pivotally ,connectedatbll toa boss 74 integral with member a 22, and has a bearing surface 90 slidably engagedbythe nosefil...
  • the shaft 47 and' housing-22 having threaded connection at83. with an extension 42b of the trigger, the end 820 of the fastener. bearing in a socket in the housing 22. Rotation of the fastener displaces the opposite projectingend 42a ofythe trigger lever in an axial direction, to locate it axially for engagement by the work.
  • a nut isatightenable, to
  • thetrigger is rotatable about the axis. of shaft-47, following sufficient retraction of fastener 82, to carry the triggerextent42al out; of alignment with the 5 work: 17 and openingdii, for example to the stored po- T sitionseen inbrokenQlines in FIG; 2. Thisallows continuousthreading othework,without interruption by the trigger. 1 W V I
  • means is provided for releasably mounting the assembly 19 so that the lever 41 projects upwardly in all positions thereof as well as all adjusted positions of members 22 and 28.
  • the housing member 22 is provided with lugs 89 and 91 projecting at opposite sides thereof to transmit the weight of the assembly.
  • Lug 89 carries a pin 92 releasably received into a bore opening in upright 93 of structure 20.
  • Lug 91 carries two oppositely projecting pins 94 and 95 adapted to seat downwardly against the uprights 96 of structure 20, after first inserting pin 92 into the opening in up right 93.
  • a hand grip is provided at 97 to be integral with the lug 91 for lifting the heavy assembly about the pivot pin 92. Accordingly, the assembly may be quickly removed from mounted condition in order to slip onto or off a long pipe projecting through the central openings found in the assembly.
  • a lubricant duct appears at 99 in FIG. 2 in housing 22 to deliver a stream of lubricant to the work at the point of threading.
  • first and second generally annular and coaxially relatively rotatable members and thread chaser means carried by one of the members to be advanced toward and retracted away from work received generally axially of said members in response to member relative movement in opposite rotary directions,
  • operating means operatively interconnecting said members and including a manually operable lever movable between an operating position in which the members are relatively moved to advance the chaser means to work threading position, and release position in which the members are relatively moved to retract the chaser means from work threading position, and
  • trip mechanism operatively connected with said lever to be responsive to relative travel of the threaded work to predetermined position relative to said members to effect automatic displacement of the lever from operating to release position and consequent retraction of the chaser means, said trip mechanism including a trigger projecting into work engaging alignment with a work receiving opening defined by said members, and a trigger controlled lever actuator movable to so displace the lever in response to predetermined displacement of the trigger by the work, the trigger being movable in the general direction of said axis in response to endwise travel of the work following initial engagement of the work therewith,
  • said trip mechanism including a shaft movable in said one member to effect said actuator movement in response to said trigger displacement by the work, said shaft and said one member at all times blocking access of work chips to said actuator, the shaft having an axis, the trigger also carried by the shaft for pivotal movement generally about the shaft axis and completely out of work engaging alignment with said opening to enable work threading without chaser retraction, there being a spring confined in a bore defined by said one member for urging a fulchrum portion of the shaft toward said one member to rock relative thereto, the trigger having a remote portion which projects relatively away from the work receiving opening and beyond the shaft axis, and adjustable means carried by said remote portion of the trigger to rock the trigger as aforesaid so as to adjust the location of the trigger axially relative to the work opening, said adjustable means located above said shaft axis and remotely from and above the level of said work opening.
  • lever actuator comprises a spring urged plunger having a retracted position in which the trip mechanism blocks plunger advancement with the lever remaining in operating position, the plunger being releasable by the trip mechanism after said predetermined trigger displacement to release spring energy acting to transmit force via the plunger to the lever to displace the lever to release position.
  • the operating means includes structure connected with the lever and selectively connectible with the other of the annular members to control the extent of thread chaser advancement when the lever is moved to operating position, said structure including a pin, there being a series of holes in the other member to selectively receive the pin, the holes spaced about said axis, a link carrying the pin and pivotally connected with the lever, and an adjustable eccentric connection between the lever and

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shearing Machines (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
  • Press Drives And Press Lines (AREA)
  • Transmission Devices (AREA)
US00349324A 1973-04-09 1973-04-09 Automatic lever controlled die head Expired - Lifetime US3820180A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US00349324A US3820180A (en) 1973-04-09 1973-04-09 Automatic lever controlled die head
GB3135473A GB1381215A (en) 1973-04-09 1973-07-02 Threading tool
DE2339778A DE2339778C3 (de) 1973-04-09 1973-08-06 An eine Gewindeschneidmaschine ansetzbarer Gewindeschneidkopf
JP8856073A JPS5347958B2 (de) 1973-04-09 1973-08-08
FR7330580A FR2224237B1 (de) 1973-04-09 1973-08-23

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00349324A US3820180A (en) 1973-04-09 1973-04-09 Automatic lever controlled die head

Publications (1)

Publication Number Publication Date
US3820180A true US3820180A (en) 1974-06-28

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Application Number Title Priority Date Filing Date
US00349324A Expired - Lifetime US3820180A (en) 1973-04-09 1973-04-09 Automatic lever controlled die head

Country Status (5)

Country Link
US (1) US3820180A (de)
JP (1) JPS5347958B2 (de)
DE (1) DE2339778C3 (de)
FR (1) FR2224237B1 (de)
GB (1) GB1381215A (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2918224A1 (de) * 1978-05-09 1979-11-15 Rex Ind Co Schneidkopf
US4288181A (en) * 1978-05-09 1981-09-08 Rex Industries Co., Ltd. Die-head of cutting machines
DE3124715A1 (de) * 1980-07-02 1982-03-11 Rex Industries Co., Ltd., Osaka Schneidkopf fuer werkzeugmaschinen
US4329093A (en) * 1979-03-14 1982-05-11 Masaaki Maruyama Die-head of cutting machine
US4370770A (en) * 1979-07-20 1983-02-01 Rems-Werk Christian Foll Und Sohne Gmbh & Co. Cutting head for thread cutting machines
US4613260A (en) * 1985-05-10 1986-09-23 Emerson Electric Co. Thread cutting die head for power driven threading machines
US5199928A (en) * 1992-05-06 1993-04-06 Emerson Electric Co. Threading machine die head

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5716660Y2 (de) * 1977-02-05 1982-04-07
JPS5437596U (de) * 1977-08-19 1979-03-12
JPS5766817A (en) * 1980-10-09 1982-04-23 Ogura Chuck Kk Die head for screw-cutting device
WO2015198493A1 (en) 2014-06-23 2015-12-30 Arkema France Urethane acrylate polymers with unique physical properties
CN116252003B (zh) * 2023-05-09 2023-07-18 四川工程职业技术学院 一种在筒状工件上加工螺旋槽的加工方法

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2918224A1 (de) * 1978-05-09 1979-11-15 Rex Ind Co Schneidkopf
US4288181A (en) * 1978-05-09 1981-09-08 Rex Industries Co., Ltd. Die-head of cutting machines
US4329093A (en) * 1979-03-14 1982-05-11 Masaaki Maruyama Die-head of cutting machine
US4370770A (en) * 1979-07-20 1983-02-01 Rems-Werk Christian Foll Und Sohne Gmbh & Co. Cutting head for thread cutting machines
DE3124715A1 (de) * 1980-07-02 1982-03-11 Rex Industries Co., Ltd., Osaka Schneidkopf fuer werkzeugmaschinen
US4396316A (en) * 1980-07-02 1983-08-02 Rex Industries Co., Ltd. Die-head of machine tools
US4613260A (en) * 1985-05-10 1986-09-23 Emerson Electric Co. Thread cutting die head for power driven threading machines
AU588313B2 (en) * 1985-05-10 1989-09-14 Emerson Electric Co. Thread cutting die head for power drive threading machines
US5199928A (en) * 1992-05-06 1993-04-06 Emerson Electric Co. Threading machine die head
EP0569320A1 (de) * 1992-05-06 1993-11-10 Emerson Electric Co. Gewindeschneidmaschinenkopf
AU654909B2 (en) * 1992-05-06 1994-11-24 Emerson Electric Co. Threading machine die head

Also Published As

Publication number Publication date
JPS5035793A (de) 1975-04-04
DE2339778B2 (de) 1980-01-03
FR2224237A1 (de) 1974-10-31
FR2224237B1 (de) 1976-11-19
DE2339778C3 (de) 1980-09-04
GB1381215A (en) 1975-01-22
JPS5347958B2 (de) 1978-12-25
DE2339778A1 (de) 1974-10-17

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