WO2008052106A2 - Mécanisme d'avance pour un tour d'usinage du type à deux parties articulées - Google Patents

Mécanisme d'avance pour un tour d'usinage du type à deux parties articulées Download PDF

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Publication number
WO2008052106A2
WO2008052106A2 PCT/US2007/082508 US2007082508W WO2008052106A2 WO 2008052106 A2 WO2008052106 A2 WO 2008052106A2 US 2007082508 W US2007082508 W US 2007082508W WO 2008052106 A2 WO2008052106 A2 WO 2008052106A2
Authority
WO
WIPO (PCT)
Prior art keywords
pin
shaft
starwheel
tripper assembly
respect
Prior art date
Application number
PCT/US2007/082508
Other languages
English (en)
Other versions
WO2008052106A3 (fr
Inventor
Brent K. Place
James M. Przybelski
Original Assignee
Actuant Corporation
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 Actuant Corporation filed Critical Actuant Corporation
Publication of WO2008052106A2 publication Critical patent/WO2008052106A2/fr
Publication of WO2008052106A3 publication Critical patent/WO2008052106A3/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B3/00—General-purpose turning-machines or devices, e.g. centre lathes with feed rod and lead screw; Sets of turning-machines
    • B23B3/22—Turning-machines or devices with rotary tool heads
    • B23B3/26—Turning-machines or devices with rotary tool heads the tools of which perform a radial movement; Rotary tool heads thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/25—Movable or adjustable work or tool supports
    • B23Q1/44—Movable or adjustable work or tool supports using particular mechanisms
    • B23Q1/50—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism
    • B23Q1/52—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism a single rotating pair
    • B23Q1/527—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism a single rotating pair with a ring or tube in which a workpiece is fixed coaxially to the degree of freedom

Definitions

  • This invention relates generally to a machining lathe, and more specifically to an improved tripper assembly for a split frame clamshell type portable machining lathe.
  • the pin engages a tooth on the starwheel to rotate the starwheel, thereby imparting rotation to the feed screw on which the starwheel is mounted and moving the tool bit radially with respect to the workpiece.
  • the pin can be manually moved in and out in a radial direction to move it from an engaged position with respect to the starwheel to a disengaged position. Room exists for improvement in this area of the tripper assembly.
  • a tripper assembly of the invention allows for a pin to be moved into or out of engagement with a starwheel without movement toward the moving assembly. Rather, the pin is moved in an arc roughly parallel to the assembly.
  • the tripper assembly is adapted for use with a clamshell lathe of the type having a stationary ring adapted to be clamped to a
  • QBMKEM 26321.00004 ⁇ 5949279.2 generally cylindrical workpiece and a rotatable ring journaled for rotation on the stationary ring.
  • the rotatable ring includes a tool module for holding a tool bit, and the tool module has a starwheel with a plurality of teeth coupled to a feed screw for moving the tool bit as the starwheel rotates.
  • the tool bit is fed by the feed screw in a radial direction with respect to the rings.
  • the tripper assembly includes a bracket affixed to the stationary ring of the lathe, a radially extending shaft mounted in the bracket, a pin holder mounted on the shaft, and a radially extending pin held by the pin holder.
  • Rotation of the shaft moves the pin along an arc to move the pin between an engaged position and a disengaged position with respect to the starwheel.
  • the pin engages a tooth on the starwheel to rotate the starwheel and when the pin is at the disengaged position, the pin does not engage a tooth on the starwheel and the starwheel does not rotate.
  • the tripper assembly is easy to use and easy to manufacture.
  • Fig. 1 is a perspective view of a tripper assembly of the invention
  • Fig. 2 is an exploded view of the tripper assembly of Fig. 1;
  • FIG. 3 is a perspective view of the tripper assembly of Fig. 1 mounted to the stationary ring of a clamshell type lathe such that a pin is in an engaged position with respect to the starwheel;
  • Fig. 4 is an enlarged view of the tripper assembly with the pin in an engaged position with respect to the starwheel;
  • Fig. 5 is a view similar to that of Fig. 3 but wherein the pin is in a disengaged position with respect to the starwheel;
  • Fig. 6 is an enlarged view of the tripper assembly with the pin in a disengaged position with respect to the starwheel.
  • Fig. 1 illustrates a tripper assembly 10 of the present invention.
  • the tripper assembly 10 is suited for use in conjunction with a clamshell lathe 12, such as shown in Fig. 3. Those skilled in the art will recognize that the tripper assembly 10 also can be used advantageously with other automated lathe designs.
  • the tripper assembly 10 includes a bracket
  • the illustrated pin holder 20 includes a shaft portion 24 having arms 26, and an outer support portion 28.
  • Shaft 16 is journaled by suitable bearings at opposite ends in endwalls 17, 19 of the bracket 14.
  • a bore 30 in the shaft portion is configured to match the shape of the center part of the shaft 16, which in the illustrated embodiment is hexagonally shaped.
  • the position of the pin holder 20 along the shaft 16 is adjustable since the pin holder 20 is slidable on the shaft 16. The position can be locked by tightening a set screw 34 extending through a bore 32 in the shaft portion 24 to bear against the shaft 16.
  • the distance D (Fig. 1) between the pin 22 and the shaft 16 is also adjustable by removing screws 27 and moving the support portion 28 along the arms 26 of the shaft portion 24, and resecuring the support portion to the shaft portion at a selected position using a different one of the three sets of screw holes illustrated.
  • clamshell lathe 12 includes a stationary ring 38 which is adapted to be centered about and affixed to a cylindrical workpiece (not shown) such as a large diameter pipe or shaft.
  • Lathe 12 also includes a rotatable ring 40 that is journaled for rotation on the stationary ring 38 and which is driven by a drive motor (not shown) in a conventional manner so that the rotatable ring 40 can be made to rotate about an axis 42 and about the workpiece.
  • a drive motor not shown
  • a tool module 44 is affixed to an outer surface of the rotatable ring 40 and therefore orbits the workpiece when the motor drives the rotatable ring 40.
  • the bracket 14 of the tripper assembly 10 is affixed to the outer surface of the stationary ring 38 as shown by fasteners extending through one or more of the holes 13 and threaded into ring 38.
  • the position along the shaft and the height of the pin 22 can be adjusted so that the pin 22 is appropriately positioned with respect to a starwheel 46 of the tool module 44.
  • the pin 22 extends radially, i.e., in a radial direction relative to the rings 38, 40.
  • the tool module 44 includes a tool block slide 48 affixed to the rotatable ring 40 and a tool block 50 having an opening 53 to receive and securely hold a tool bit (not shown), as is conventional and also described for example in U.S. Pat. No. 4,739,685. Further, a threaded

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Turning (AREA)

Abstract

La présente invention concerne un mécanisme d'avance utilisé avec un tour en deux parties articulées qui a une bague stationnaire et une bague rotative comprenant un module d'outil pour supporter un taillant d'outil. Le module d'outil a une roue en étoile avec une pluralité de dents qui est couplée à une vis de commande de l'avance pour déplacer un taillant d'outil dans une direction radiale par rapport aux bagues à mesure que la roue en étoile tourne. Le mécanisme d'avance comprend un bras fixé à la bague stationnaire du tour, un arbre s'étendant radialement qui est monté sur le bras, un support de broche monté sur l'arbre, et une broche s'étendant radialement qui est retenue par le support de broche. La rotation de l'arbre déplace la broche le long d'un arc de sorte à déplacer la broche entre une position engrenée et une position désengrenée par rapport à la roue en étoile. Lorsque la broche est en position engrenée, lors de chaque révolution de la roue en étoile, la broche engrène une dent sur la roue en étoile pour faire tourner la roue en étoile.
PCT/US2007/082508 2006-10-26 2007-10-25 Mécanisme d'avance pour un tour d'usinage du type à deux parties articulées WO2008052106A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US86307006P 2006-10-26 2006-10-26
US60/863,070 2006-10-26

Publications (2)

Publication Number Publication Date
WO2008052106A2 true WO2008052106A2 (fr) 2008-05-02
WO2008052106A3 WO2008052106A3 (fr) 2008-11-13

Family

ID=39325418

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/082508 WO2008052106A2 (fr) 2006-10-26 2007-10-25 Mécanisme d'avance pour un tour d'usinage du type à deux parties articulées

Country Status (1)

Country Link
WO (1) WO2008052106A2 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010077346A1 (fr) * 2008-12-31 2010-07-08 H&S Tool, Inc. Ensemble de culbuteur pour tour à double mâchoire
US8584557B2 (en) 2008-12-31 2013-11-19 H&S Tool, Inc. Clamshell lathe
US8997611B1 (en) 2013-10-11 2015-04-07 Tri Tool Inc. Bearing assembly for use with a rotating machining device
US9138808B2 (en) 2013-10-17 2015-09-22 Tri Tool Inc. Tool feed system for use with a rotating machining device
US10092959B2 (en) 2013-10-17 2018-10-09 Tri Tool Inc. Portable lathe machine
US11376666B2 (en) 2017-10-27 2022-07-05 Tri Tool Inc. Pipe facing machine system

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4739685A (en) * 1987-01-12 1988-04-26 Ricci Donato L Split frame portable machining lathe
US4939964A (en) * 1988-09-16 1990-07-10 Ricci Donato L Low-clearance pipe lathe
US4944205A (en) * 1990-01-29 1990-07-31 Ricci Donato L Ratchet feed drive for clamshell lathe
US5189933A (en) * 1991-04-08 1993-03-02 Ricci Donato L Clamshell mounted pipe nozzle weld milling machine with centering apparatus
US5477759A (en) * 1993-04-13 1995-12-26 Wellcutter, Inc. Radial cutting tool for cutting thick-walled tubular members
US5549024A (en) * 1995-01-30 1996-08-27 Ricci; Donato L. Clamshell pipe lathe having improved bearing arrangement
US5881618A (en) * 1998-04-24 1999-03-16 Donato L. Ricci Tool block slide assembly for automated cutting tool

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4739685A (en) * 1987-01-12 1988-04-26 Ricci Donato L Split frame portable machining lathe
US4939964A (en) * 1988-09-16 1990-07-10 Ricci Donato L Low-clearance pipe lathe
US4944205A (en) * 1990-01-29 1990-07-31 Ricci Donato L Ratchet feed drive for clamshell lathe
US5189933A (en) * 1991-04-08 1993-03-02 Ricci Donato L Clamshell mounted pipe nozzle weld milling machine with centering apparatus
US5477759A (en) * 1993-04-13 1995-12-26 Wellcutter, Inc. Radial cutting tool for cutting thick-walled tubular members
US5549024A (en) * 1995-01-30 1996-08-27 Ricci; Donato L. Clamshell pipe lathe having improved bearing arrangement
US5881618A (en) * 1998-04-24 1999-03-16 Donato L. Ricci Tool block slide assembly for automated cutting tool

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010077346A1 (fr) * 2008-12-31 2010-07-08 H&S Tool, Inc. Ensemble de culbuteur pour tour à double mâchoire
US8250953B2 (en) 2008-12-31 2012-08-28 H&S Tool, Inc. Tripper assembly for a clamshell lathe
US8584557B2 (en) 2008-12-31 2013-11-19 H&S Tool, Inc. Clamshell lathe
US8997611B1 (en) 2013-10-11 2015-04-07 Tri Tool Inc. Bearing assembly for use with a rotating machining device
US9863467B2 (en) 2013-10-11 2018-01-09 Tri Tool Inc. Bearing assembly for use with a rotating machining device
US9138808B2 (en) 2013-10-17 2015-09-22 Tri Tool Inc. Tool feed system for use with a rotating machining device
JP2018047549A (ja) * 2013-10-17 2018-03-29 ティーアールアイ・トゥール・インコーポレーテッド 回転機械加工デバイスとともに使用する工具送りシステム
US10092959B2 (en) 2013-10-17 2018-10-09 Tri Tool Inc. Portable lathe machine
US10092957B2 (en) 2013-10-17 2018-10-09 Tri Tool Inc. Tool feed system for use with a rotating machining device
US11376666B2 (en) 2017-10-27 2022-07-05 Tri Tool Inc. Pipe facing machine system

Also Published As

Publication number Publication date
WO2008052106A3 (fr) 2008-11-13

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