EP3005495A1 - Outils de travail à têtes de travail interchangeables - Google Patents

Outils de travail à têtes de travail interchangeables

Info

Publication number
EP3005495A1
EP3005495A1 EP14804492.8A EP14804492A EP3005495A1 EP 3005495 A1 EP3005495 A1 EP 3005495A1 EP 14804492 A EP14804492 A EP 14804492A EP 3005495 A1 EP3005495 A1 EP 3005495A1
Authority
EP
European Patent Office
Prior art keywords
work head
work
balls
ram piston
assembly
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.)
Withdrawn
Application number
EP14804492.8A
Other languages
German (de)
English (en)
Other versions
EP3005495A4 (fr
Inventor
Richard R. Bowles
Robert M. Baracskai
Beat Schweizer
Rudolf Kreuzer
Mark LUTOLF
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.)
Ridge Tool Co
Original Assignee
Ridge Tool Co
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 Ridge Tool Co filed Critical Ridge Tool Co
Publication of EP3005495A1 publication Critical patent/EP3005495A1/fr
Publication of EP3005495A4 publication Critical patent/EP3005495A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D15/00—Shearing machines or shearing devices cutting by blades which move parallel to themselves
    • B23D15/12—Shearing machines or shearing devices cutting by blades which move parallel to themselves characterised by drives or gearings therefor
    • B23D15/14—Shearing machines or shearing devices cutting by blades which move parallel to themselves characterised by drives or gearings therefor actuated by fluid or gas pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
    • B25B27/10—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same inserting fittings into hoses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D21/00—Machines or devices for shearing or cutting tubes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
    • H01R43/042—Hand tools for crimping
    • H01R43/0427—Hand tools for crimping fluid actuated hand crimping tools

Definitions

  • the present subject matter relates to hydraulic tools and interchangeable work heads. More particularly, the present subject matter relates to interchangeable and detachable work heads for use with a work tool, such as a hand-held hydraulic crimp, cutting, punch or press device.
  • a work tool such as a hand-held hydraulic crimp, cutting, punch or press device.
  • Hydraulic work tools are employed in numerous applications to provide a user with a desired mechanical advantage.
  • crimping tools used for making crimping connections, such as crimping terminals onto conductors.
  • cutting tools where the tool enables the user to apply a relatively large amount of force or pressure.
  • a detachable work head system is desired. Using the same work tool with different detachable/interchangeable work heads, it is possible to change over to different applications where necessary.
  • Conventional hydraulic work tools typically include a work head having tooling appropriate for the particular application, and an actuator coupled to the work head for driving the tooling. Hydraulic mechanisms are often employed in tool actuators.
  • the work head can include a fixed die holder and movable die holder and die that are hydraulically driven towards the fixed die to perform an operation.
  • the actuator can include a hydraulic pump that is operated either manually or by an electric driven motor to either directly or indirectly drive the movable die of the work head.
  • Some current work tools have work heads with tooling that simply close and open. It is also known to have a detachable work head including a linearly displaceable component and a biasing member to provide a biasing action for returning the movable die of the work head to a fully retracted, open position.
  • the present subject matter provides a hydraulic system comprising a work tool including a housing, a hydraulic cylinder or main body within the housing, a ram piston disposed in the hydraulic main body and positionable between a fully retracted position and a fully extended position, and biasing provisions associated with the ram piston and configured to bias the ram piston to the fully retracted position.
  • the hydraulic system also comprises a quick release coupling mounted to the work tool for releasably connecting an interchangeable work head to the work tool. Upon positioning the ram piston to the fully retracted position, a distal end of the ram piston extends outwardly and beyond the quick release coupling.
  • the present subject matter provides a hand-held hydraulic assembly comprising a work tool having a hydraulic cylinder or main body, a ram piston disposed in the hydraulic main body and a compression type spring mounted on the ram piston.
  • the hydraulic assembly also comprises a quick release coupling mounted to the work tool for releasably connecting an interchangeable work head to the work tool.
  • the coupling includes (i) a generally cylindrical ball holding part defining a plurality of ball guide apertures and an open end, the ball holding part engaged with the cylinder or body of the work tool, (ii) a generally cylindrical locking ring disposed on the ball holding part and axially positionable thereon between an unlocked position and a locked position, and (iii) a plurality of balls disposed in the ball guide apertures defined in the ball holding part.
  • the present subject matter provides a work head adapted for selective engagement with, and disengagement from a hydraulic work tool.
  • the work tool has a hydraulic cylinder or main body, a ram piston disposed in the hydraulic main body displaceable between extended and retracted positions, and a biasing member engaged with the ram piston.
  • the biasing member is configured to bias the ram piston to the retracted position.
  • the work head comprises a guide assembly including engagement provisions for engaging a workpiece and performing at least one operation on the workpiece.
  • the engagement provisions are positionable between an extended position and a retracted position.
  • the guide assembly includes a generally cylindrical member aligned with and that receives a distal end of the ram piston upon engagement of the work head with a work tool.
  • FIG. 1 is a perspective view of a hydraulic work tool having a quick-connect coupling for a detachable work head in accordance with the present disclosure.
  • FIG. 4 is an enlarged exploded view of the work head of FIG. 3.
  • FIG. 5 is a cross-sectional view of the assembly of FIG. 3.
  • FIG. 6 is an exploded view of an exemplary work head for the work tool of FIG. 1 according to another aspect of the present disclosure.
  • FIG. 7 is an exploded view of an exemplary work head for the work tool of FIG. 1 according to yet another aspect of the present disclosure.
  • FIG. 8 is a cross-sectional view of the work head of FIG. 7 connected to the hydraulically actuated piston assembly and quick-connect coupling of FIG. 1.
  • FIG. 9 is an exploded view of the hydraulically actuated piston assembly and quick-connect coupling of the work tool of FIG. 1 and an exemplary work head for the work tool of FIG. 1 according to still yet another aspect of the present disclosure.
  • FIG. 10 is a cross-sectional view of the assembly of FIG. 9.
  • FIG. 11 is a cross-sectional view of an exemplary work head for the work tool of FIG. 1 according to yet another aspect of the present disclosure.
  • FIG. 12 is an end view of the work head of FIG. 11 illustrating two planes of cross-sections which are shown in FIGS. 11 and 13.
  • FIG. 14 is an exploded view of a portion of the hydraulically actuated piston assembly and quick-connect coupling of the work tool and the exemplary work head shown in FIGS. 11-13.
  • FIG. 15 is an enlarged exploded view of the work head of FIG. 14.
  • FIG. 16 is an exploded view of the hydraulically actuated piston assembly and quick-connect coupling of the work tool of FIG. 1 and an exemplary work head for the work tool of FIG. 1 according to still another aspect of the present disclosure.
  • FIG. 17 is a cross-sectional view of the assembly of FIG. 16.
  • FIG. 19 is a detailed view of a region of FIG. 8.
  • FIG. 20 is a detailed view of a region of FIG. 17.
  • FIG. 21 is a schematic view of a handheld manual hydraulic tool having a quick-connect coupling for a detachable work head in accordance with the present disclosure.
  • FIG. 22 is a schematic view of a remote access hydraulic tool having a quick-connect coupling for a detachable work head in accordance with the present disclosure.
  • the engagement provisions typically can be positioned between an extended position and a retracted position, and to any position therebetween.
  • the yoke assembly defines a bore and typically a cylindrical bore extending through the yoke assembly.
  • the bore is aligned with or extends in a direction parallel and collinearly with a longitudinal axis and/or direction of travel of the ram piston.
  • a work head adapted for selective engagement and disengagement from a hydraulic work tool.
  • the work tool has a hydraulic cylinder or main body, a ram piston disposed in the hydraulic main body displaceable between extended and retracted positions, and a biasing member engaged with the ram piston.
  • the biasing member is configured to bias the ram piston to the retracted position.
  • the work head comprises a yoke or guide assembly including engagement provisions for engaging a workpiece and performing at least one operation on the workpiece.
  • the engagement provisions are positionable between an extended position and a retracted position.
  • the yoke or guide assembly defines a bore aligned with the ram piston upon engagement of the work head with a work tool.
  • the work head also comprises biasing provisions disposed in the bore of the yoke or guide assembly. The biasing provisions are configured to bias the engagement provisions to a retracted position.
  • the work head also comprises a slidable member disposed in the bore of the yoke or guide assembly and engaged with the engagement provisions.
  • the slidable member includes radially outwardly biased engagement provisions for providing selective engagement between the slidable member and the ram piston of the work tool.
  • FIGS. 1 and 2 illustrate a work tool 100 of a hand-held hydraulic assembly, in the form of, for example, a pressing tool, including a housing 102 having a nose end 104 at which one or more detachable/interchangeable work heads are selectively and removably attached via a quick release coupling 106.
  • a central portion of the housing 102 can define a handle 110 for grasping the tool 100.
  • the motor 110 for providing power to a motor 120.
  • the motor 120 is mounted or otherwise retained within a lower cylindrically shaped portion of the housing 102 as shown in the referenced figures and so the motor 120 is generally hidden from view.
  • the work tool 100 can alternatively receive electrical power via one or more cords (not shown).
  • the work tool 100 can be a manual pump action hydraulic tool or a remote access hose connected hydraulic tool.
  • the work tool 100 further comprises a hydraulically actuated piston assembly 122 housed in the housing 102 that is used to actuate the work head connected thereto.
  • a distal end 121 of the piston assembly 122 extends outward and beyond the quick release coupling 106.
  • the distal end 121 of the ram piston extends outwardly and beyond the quick release coupling 106 when the ram piston is in its fully retracted position in the hydraulic tool.
  • This configuration facilitates alignment and engagement of a work tool with the quick release coupling, to a work head.
  • this configuration enables visual inspection of the distal end of the ram piston.
  • a latch 160 is pivotally connected to the upper yoke and an upper die holder 162 is pivotally connected to the bottom yoke.
  • the latch 160 includes a body 164 having a bore 166 provided at one end portion 168 and a slot 170 provided at the other end portion 172.
  • the body 164 can further include a finger tab 174 extending outwardly from end portion 168.
  • the latch 160 is connected to the top yoke via a pivot pin 180.
  • the pin 180 is inserted through a pivot bore 182 provided on the first end portion 140 of arm 134, a biasing member or torsion spring 184, the bore 166 of the latch 160, and a pivot bore 186 provided on the first end portion 142 of arm 136.
  • External retaining rings 190 are attached to the ends of the pivot pin 180.
  • the detent or guide spring assemblies include an outer enclosure or cage, a compression spring, and a steel ball retained within the cage and biased to a designated position by the spring.
  • Such assemblies are commercially available such as from Carr Lane Manufacturing of St. Louis, MO and are typically referred to as ball plungers or other spring loaded devices.
  • the noted ball plungers are typically available in "press in” style or in "thread in” style.
  • the present subject matter includes the use of these and other assemblies for use as detent or guide spring assemblies.
  • each of the guide spring assemblies 236 includes a ball 238 which at least partially projects from the inner surface 204. Further provided on the inner surface 204 is a pair of spaced ledges 240. To secure the crimping die on the upper die holder 162, the crimping die is positioned between the ledges 240 so that the crimping die is engaged by the balls 238 provided on the spring assemblies 236.
  • the retainer 270 includes a body 276 having an enlarged radially extending or annular shelf 278 which is received in the opening 254 of the base member 138.
  • the first end 266 of the spring 264 is mounted onto the shelf 278.
  • the cap 274 is provided with a body 290 having a cylindrical protrusion 292 extending outwardly therefrom.
  • the protrusion 292 includes a threaded portion 294, and a pitch of the thread substantially corresponds to the pitch of the undeformed tension spring 264. This allows the cap 274 lo thread into the tension type spring 264.
  • annular flange 296 located on the body 290 opposite the protrusion 292 is dimensioned to be received in a corresponding annular groove 300 on an end face of the cylindrical member 250.
  • a set screw 310 is threaded through an opening 312 on the cylindrical member 250 and engages the body 290 of the cap 274.
  • the exemplary work head 130 further includes a moveable die holder 320 configured to be biased in an open position by the tension type spring 264.
  • the moveable die holder 320 includes a body 322 sized to be received between the arms 134, 136 of the yoke 132, and displaceable on a portion of the base member 138. Similar to the upper die holder 162, the moveable die holder 320 is designed to hold a half round electric lug crimping die (not shown). Dies for cutting cable, rebar, threaded rods and other components and pressing plumbing or other conduit fittings are also available.
  • the body 322 has a curved surface 324 which substantially corresponds in shape to (i.e., is a mirror image of) the inner surface 204 of the upper die holder 162.
  • the surface 324 includes a pair of spaced holes 326 having mounted therein detent or guide spring assemblies 328.
  • the guide spring assemblies 328 are similar to detent or guide spring assemblies 236, and include balls 340 which at least partially project from the outer surface 324.
  • Further provided on the surface 324 is a pair of diametrically spaced ledges 342. To secure the crimping die on the moveable die holder 320, the crimping die is positioned between the ledges 342 so that the crimping die is engaged by the balls 340 provided on the guide spring assemblies 328.
  • the cylindrical member 250 houses the tension type spring 264, and the spring 264 is secured to the moveable die holder 320 via a fastener 350.
  • the fastener 350 extends through an opening 352 in the retainer 270 and threadingly engages an opening in the body 322 of the moveable die holder 320.
  • a cylindrical protrusion can extend from the moveable die holder 320.
  • the protrusion can be shaped similar to protrusion 292 and can include a threaded portion that can be threaded into the tension type spring 264.
  • the tension type spring 264 is attached to the moveable die holder 320 via the spring retainer 270 and the fastener 350.
  • the tension type spring 264 is inserted into the cylindrical member 250 of the yoke 132.
  • the screw locking mechanism or cap 274 is then threaded into the spring 264.
  • a series of holes 297 are provided which can receive pin protrusions of a spanner type wrench (not shown) and allow rotation of cap 274.
  • the quick-connect or quick release coupling 106 includes a locking ring 360, a ball holding part 362 connected to a coupler 364, and a spring element
  • balls 366 with a first diameter and balls 368 with a second diameter are disposed in respective ball guides 370, 372 such that they are radially movable.
  • the balls 366, 368 act as movable locking bodies and are distributed over the periphery of the ball holding part 362.
  • the shape of the ball guides 370, 372 on the inside of the ball holding part 362 prevents the balls 366, 368 from falling out when the cylindrical member 250 of the work head 130 is not inserted or not inserted fully.
  • the ball holding part 362 has staggered internal radii, namely an area with a greater outside internal radius in the area of the ball guides 370 and the balls 366 and an area with a smaller inside internal radius in the area of the ball guides 372 and the other balls 368.
  • the cylindrical member 250 of the yoke 132 is provided with the two circumferential grooves 260 that are selectively engaged by the quick-connect coupling 106. Accordingly, the cylindrical member 250 can have outside radii that are likewise staggered and adapted to the corresponding graduations (e.g., differing radii) in the ball holding part 362.
  • the locking ring 360 is mounted on the ball holding part 362 in an axially movable manner.
  • the locking ring 360 has locating grooves 380, 382 on the inside, which are formed so that the balls 366, 368 can move away into the respective locating grooves 380, 382 when the locking ring 360 Is in the unlocked position, and thereby avoid obstructing the insertion of the cylindrical member 250 of the work head 130.
  • the spring element 374 is mounted between the ball holding part 362 and the locking ring 360 and permanently presses the locking ring 360 in an axial direction into the locking position. In order to achieve the unlocked position of the locking ring 360, the locking ring 360 must therefore be moved into this position manually by means of a gripping portion 388.
  • set screws 390 are threaded into openings 392 on the locking ring 360, and distal ends of the set screws 390 are received in axial slots 394 located on the ball holding part 362.
  • the work tool 100 includes the hydraulically actuated piston assembly 122 that is used to actuate the work head connected thereto.
  • the assembly 122 generally comprises a hydraulic cylinder or main body 400, a ram piston 402 and a biasing member or compression type spring 404.
  • the main body 400 generally comprises a hydraulic cylinder or main body 400, a ram piston 402 and a biasing member or compression type spring 404.
  • the main body 400 can be connected to the coupler 364 via set screws 406 threaded though openings 408 in the coupler 364.
  • the main body 400 is threaded onto the coupler 364.
  • the threads can be provided along an upper end of the main body 400.
  • the set screws 406 serve to secure or lock the threaded connection.
  • the ram piston 402 includes a piston body 410 and an elongated member 412 extending outwardly from the piston body 410.
  • the piston body 410 defines a first circumferential groove 414 and a second circumferential groove 416.
  • the first groove 414 is sized to receive a first hydraulic seal 418 and the second groove is sized to receive a hydraulic guide ring 420.
  • a cylindrical, hollow projection 424 extends from the piston body 410 and receives a first end portion 426 of the elongated member 412.
  • the piston body 410 is sealingly received in a cylindrical-shaped hydraulic cavity 430 of the main body 400 which is open in the direction of the work head 130.
  • the inner wall of the cavity 430 serves to guide the movement of the piston body 410, and the elongated member 412, during operation of the work tool 100, and the seal 418 provides a seal relative to the inner wall of the hydraulic cavity 430.
  • One end 432 of the compression type spring 404 is supported on the projection 424.
  • An opposite end 434 of the spring 404 engages an internal wall 436 of the coupler 364.
  • the elongated member 412 of the ram piston 402 is formed as one-piece and extends through the spring 404 and an opening 438 in the internal wall 436 and outwardly a predetermined distance beyond the quick-connect coupling 106. It should be recognized that it may be advantageous to make the piston 410 as a two piece arrangement where the elongated member 412 is made of a different material than the piston. To ensure proper alignment of the elongated member 412 through the quick-connect coupling 106, a guide ring 440 can be provided in an internal groove 442 located on a surface of the internal wall 436 that defines the opening 438.
  • the guide ring 440 can be formed from an elastomeric material which allows the guide ring to act as a wiper for removing any contaminants from the elongated member 412 when the ram piston 402 is retracted. This serves to protect the ram piston seals 418, 420 from damage from contaminants that could result in a hydraulic leak.
  • the cylindrical member 250 of the work head 130 is inserted into the quick-connect coupling 106.
  • the interchangeable work head defines a recessed receiving region for receipt of a distal end of the ram piston, which extends outward and beyond the quick release coupling of the work tool.
  • a free second end portion 450 of the elongated member 412 of the ram piston 402 is inserted through the cap 274 secured to the cylindrical member 250 and the tension type spring 264. Again, the cap is used to support the tension type spring 264 and as a centering means for centering the elongated member 412 in the cylindrical member 250.
  • An end face of the second end portion 450 is provided with a hole 452 dimensioned to receive a head of the fastener 350 extending through the retainer 270 and secured to the moveable die holder 320. This allows the second end portion 450 of the elongated member 412 to abut the body 276 of the retainer 270.
  • the upper die holder 162 is pivotally connected to the yoke
  • the upper die holder 162 includes the detent or guide spring assemblies 236.
  • the tension type spring 264 is mounted to the moveable die holder 320 via the fastener 350 which extends through the opening 506 of the retainer 502.
  • the moveable die holder 320 is biased in an open position by the tension type spring 264 and includes the detent or guide spring assemblies 328.
  • the tension type spring 264 is attached to the moveable die holder 320 via the spring retainer 502 and the axially arranged fastener 350.
  • the tension type spring 264 Is Inserted Into the cylindrical member 250 of the yoke 132.
  • the screw locking mechanism or cap 274 is then threaded into the tension type spring 264. Once the desired spring preload is attained, the cap 274 can be locked in place via the set screw 310 and threaded aperture 312 to prevent unintentional loosening of the mechanism.
  • FIGS. 7 and 8 depict an interchangeable work head 550 for the work tool 100 according to yet another aspect of the present disclosure.
  • work head 550 includes the yoke 132 comprising the pair of spaced arms 134, 136 interconnected by the base member 138.
  • the latch 160 is pivotally connected to the yoke 132 via the pivot pin 180 which is inserted through the torsion spring 184 and retained by the retaining rings 190.
  • the upper die holder 162 is pivotally connected to the yoke 132 via the pivot pin 226 which is inserted through the torsion spring 228 and retained by the retaining rings 230.
  • the upper die holder 162 includes the detent or guide spring assemblies 236.
  • the yoke 132 further includes the generally cylindrical member 250 which is selectively connected to the quick release coupling 106. Housed in the cylindrical member 250 is a biasing member or compression type spring 552. The spring 552 is mounted on a cup-shaped sleeve or retainer 554.
  • the retainer includes a cylindrical body 556 having a radial flange 560 at an open end 562 of the body and an axial through hole 566 at a generally closed end 568 of the body 556.
  • the flange 560 serves as a stop for one end 580 of the spring 552.
  • the other end 582 of the spring 552 is supported against an internal wall or step 584 of the bore 252 of the cylindrical member 250.
  • the generally closed end 568 of the retainer body 556 is sized to pass at least partially through an opening 586 defined by the step 584.
  • the retainer 554 is mounted to the moveable die holder 320 via the fastener 350 which extends through the opening 566 of the retainer 554.
  • the moveable die holder 320 is spring-loaded or biased in an open position by the compression type spring 552 and includes the detent pins 328.
  • the return motion of the ram piston 402 is accomplished by means of the compression type spring 552, which acts on the retainer 554 and moveable die holder 320, and by the compression type spring 404, which acts on the piston body 410 via the centering projection 424 as soon as a non-return valve opens when a predetermined maximum pressure is exceeded.
  • the springs 264 and 552 in previously described work heads 130, 500, and 550 are examples of biasing provisions disposed in a bore of a yoke assembly. It will be understood that the present disclosure includes other types of biasing provisions.
  • the hydraulically actuated piston assembly 122 that is used to actuate the work head 600 connected thereto, generally comprises the hydraulic main body 400, a ram piston 642 and the compression type spring 640.
  • the ram piston 642 includes a piston body 650 and an elongated member 652 extending outwardly from the body.
  • the piston body 650 defines a first circumferential groove 654 and a second circumferential groove 656.
  • the first groove 654 is sized to receive a first hydraulic seal 658 and the second groove 656 is sized to receive a hydraulic guide ring 660.
  • the piston body 650 is sealingly received in the cylindrical-shaped hydraulic cavity 430 of the main body 400.
  • One end 662 of the compression type spring 640 abuts the body 650.
  • An opposite end 664 of the spring 640 engages the internal wall 436 of the coupler 364. As a result, the ram piston 642 is always spring-loaded or biased away from the work head 600.
  • the elongated member 652 of the ram piston 642 extends through the spring 640 and the opening 438 in the internal wall 436.
  • a distal end of the elongated member 652 includes an axial projection 668 having a circumferential groove 670 defined therein.
  • a guide ring 680 can be mounted in the opening 438 of the internal wall 436. Similar to the guide ring 440 (FIG. 5), guide ring 680 can be formed from an elastomeric material which allows the guide ring 680 to act. as a wiper for removing any contaminants from the elongated member 652 when the ram piston 642 is retracted.
  • the cylindrical member 610 of the work head 600 is inserted into the quick-connect coupling 106.
  • Located on the flange 622 of the piston 616 is a pair of diametrically spaced bores 684.
  • a pin 686 Positioned in each bore 684 is a pin 686 which is biased outwardly from the flange 622 via a biasing member or compression type spring 688.
  • Each pin 686 includes a head 690, the pin being inserted through the spring 688 so that one end of the spring abuts the head 690 and the other end of the spring abuts a ledge 692 provided in the bore 684.
  • Each of the bores 684 are in communication with an axial bore 700 of the piston 616, and a radial force applied to the pins 686 causes a distal end of Lhe pins Lo al least partially piujecl into the axial bore 700.
  • the axial bore 700 is dimensioned to receive the axial projection 668 located on the distal end of the elongated member 652.
  • the assembly 686, 688 is an example of a radially outwardly biased engagement provision.
  • the distal ends of the pins 686 are then received in the circumferential groove 670 of the axial projection 668 located in the bore 700. This, in turn, mechanically engages or couples the piston 616 to the ram piston 642.
  • the return motion of the piston 616 and the ram piston 642 is accomplished by means of the compression type spring 640, which acts on the piston body 650 as soon as a non-return valve opens when a predetermined maximum pressure is exceeded.
  • the pins 686 move back on the cam surface 710 which, in turn, causes the pins 686 to disengage from the projection 688 and bias outwardly from the flange 622.
  • FIGS. 11-15 depict an interchangeable work head 800 for the work tool 100 according to still yet another aspect of the present disclosure. Similar to the work heads described above, work head 800 includes the yoke 132 comprising the pair of spaced arms 134, 136 interconnected by the base member 138. The latch 160 is pivotally connected to the yoke 132 via the pivot pin 180 which is inserted through the torsion spring 184 and retained by the retaining rings 190. The upper die holder 162 is pivotally connected to the yoke 132 via the pivot pin 226 which is inserted through the torsion spring 228 and retained by the retaining rings 230. The upper die holder 162 includes the detent or guide spring assemblies 236.
  • the hydraulically actuated piston assembly 122 that is used to actuate the work head 800 connected thereto, generally comprises the hydraulic main body 400, a ram piston 842 and the compression type spring 840.
  • the ram piston 842 includes a piston body 850 and an elongated member 852 extending outwardly from the body.
  • the piston body 850 defines a first circumferential groove 854 and a second circumferential groove 856.
  • the first groove 854 is sized to receive a first hydraulic seal 858 and the second groove 856 is sized to receive a hydraulic guide ring
  • the piston body 850 is sealingly received in the cylindrical-shaped hydraulic cavity 430 of the main body 400.
  • One end 862 of the compression type spring 840 abuts the body 850.
  • An opposite end 864 of the spring 840 engages the internal wall 436 of the coupler 364.
  • the elongated member 852 of the ram piston 842 extends through the spring 840 and the opening 438 in the internal wall 436.
  • a distal end of the elongated member 852 includes an axial recess 868 having a circumferential groove 870 defined therein.
  • a guide ring 880 can be mounted in the opening 438 of the internal wall 436. Similar to the guide ring 440 (FIG. 5), guide ring 880 can be formed from an elastomeric material which allows the guide ring 880 to act as a wiper for removing any contaminants from the elongated member 852 when the ram piston 842 is retracted.
  • Hole plugs 892 fill the holes in piston 816 after insertion of ball 891 and spring 890.
  • the assembly 886, 888 is an example of a radially outwardly biased engagement provision.
  • a coupler 893 is positioned between the distal end of the elongated member 852 of the ram piston 842 and the piston 816.
  • the coupler 893 includes a projection 894 sized and configured to extend into the recess 868 defined in the elongated member 852 and an oppositely directed projection 895 sized and configured to extend into a corresponding axial recess defined in the piston 816.
  • the coupler 893 also includes a radial member 897 sized and configured to engagingly fit within the bore 812 defined in the cylindrical member 810.
  • the coupler 893 additionally defines a receiving groove 896 described in greater detail herein. Additional details of this embodiment are provided herein in the description of FIG. 23.
  • the return motion of the piston 816 and the ram piston 842 is accomplished by means of the compression type spring 840, which acts on the piston body 850 as soon as a non-return valve opens when a predetermined maximum pressure is exceeded.
  • the ball detents 886 are received in the receiving groove 899 which, in turn, causes the ball detents 886 to disengage from the coupler 893 and bias outwardly from the flange 822 as illustrated in FIG. 13. This radial movement of the ball detents 886 disengages or decouples the piston 816 from the ram piston 842.
  • FIGS. 16 and 17 depict an interchangeable work head 900 for the work tool 100 according to yet another aspect of the present disclosure.
  • work head 900 includes the yoke 132 comprising the pair of spaced arms 134, 136 interconnected by the base member 138.
  • the latch 160 is pivotally connected to the yoke 132 via the pivot pin 180 which is inserted through the torsion spring 184 and retained by the retaining rings 190.
  • the upper die holder 162 is pivotally connected to the yoke 132 via the pivot pin 226 which is inserted through the torsion spring 228 and retained by the retaining rings 230.
  • the upper die holder 162 includes the detent or guide spring assemblies 236.
  • the yoke 132 further includes the generally cylindrical member 250 which is selectively connected to the quick release coupling 106.
  • a biasing member or compression type spring 952 housed in the cylindrical member 250 is a biasing member or compression type spring 952.
  • the spring 952 is disposed on a sleeve or retainer 954.
  • the retainer includes a cylindrical body 956 having a seating ring 960 at an open end 962 of the body 956 and a plate
  • the return motion of the ram piston 402 is accomplished by means of the compression type spring 952, which acts on the retainer 954 via seating ring 960 and circular clip 961 and moveable die holder 320, and by the compression type spring 404, which acts on the piston body 410 via the centering projection 424 as soon as a non-return valve opens when a predetermined maximum pressure is exceeded.
  • the configuration of components also includes an inner cylindrical component which is a cylindrical member of the yoke, such as the cylindrical member 250 of the yoke 132.
  • the inner cylindrical member provides a generally circumferential outer face defining at least one groove, and particularly a first circumferential groove and a second circumferential groove spaced from the first groove.
  • Each of the first and the second grooves is accessible along the outer face of the cylindrical member.
  • Representative examples of such grooves include grooves 260 and 261 of the cylindrical member 250.
  • the shape and size of the grooves are such so as to fittingly receive the plurality of balls.
  • the shape and size of the groove closer to the pressing device e.g., groove 260
  • the shape and size of the groove closer to the work head e.g., groove 261
  • the shape and size of the groove closer to the work head is shaped and sized to fittingly receive the plurality of balls 368 or a second portion of the plurality of balls 366 and 368.
  • I he proposed work tool 100 and interchangeable work heads 130, 500, 550, 600, 800, and 900 have advantages over the existing designs.
  • One advantage is ease of assembly as the proposed designs of the work heads 130, 500, 550 having the screw locking mechanism 274 allows pre-tensioning of the tension type spring 264 without the need of first extending the spring.
  • the threaded portion of the screw locking mechanism 274 can tension and/or extend the tension spring 264 as the mechanism is turned.
  • Another advantage is that the extended elongated member 412 of the ram piston 402 aids in the alignment of the detachable work heads 130, 500, 550, and 900 with the work tool 100.
  • work heads that include biasing provisions that bias one or more members such as movable die members to a desired position such as an open position.
  • the biasing provisions include at least one axially oriented spring or other biasing member which is disposed about the ram piston in the work head.
  • FIG. 5 the work head 130 with spring 264 disposed about ram piston 402
  • FIG. 8 the work head 550 with spring 552 disposed about ram piston 450
  • FIG. 17 the work head 900 with spring 952 disposed about ram piston 450.
  • FIG. 1010 pivotal displacement or “pumping” of the handle 1010 displaces hydraulic fluid within the tool 1000 and ultimately results in extension of a hydraulic piston (not shown).
  • Figure 21 is presented to illustrate that handheld manually operated hydraulic tools can also utilize aspects and features of the present subject matter.
  • the hydraulic head housing 1102 includes a hydraulic cylinder (not shown), a ram piston (not shown) disposed in the cylinder, and biasing provisions (not shown) associated with the ram.
  • FIG. 22 is presented to illustrate that remote . access hydraulic tools and tool systems can also utilize aspects and features of the present subject matter. [0092] Many other benefits will no doubt become apparent from future application and development of this technology.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
  • Automatic Assembly (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Shearing Machines (AREA)

Abstract

L'invention concerne un ensemble hydraulique portatif qui comprend un outil de travail présentant un vérin ou corps principal hydraulique, un piston de course disposé dans le corps principal hydraulique et un ressort ou autre élément de sollicitation monté sur le piston de course. Une tête de travail interchangeable est sélectivement mise en prise avec le piston de course de l'outil de travail. Le piston de course peut se déplacer axialement dans le corps principal pour actionner la tête de travail. Un raccord rapide monté sur l'outil de travail relie de façon amovible la tête de travail interchangeable à l'outil de travail.
EP14804492.8A 2013-05-28 2014-05-26 Outils de travail à têtes de travail interchangeables Withdrawn EP3005495A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201361827842P 2013-05-28 2013-05-28
PCT/US2014/039473 WO2014193765A1 (fr) 2013-05-28 2014-05-26 Outils de travail à têtes de travail interchangeables

Publications (2)

Publication Number Publication Date
EP3005495A1 true EP3005495A1 (fr) 2016-04-13
EP3005495A4 EP3005495A4 (fr) 2017-01-18

Family

ID=51989331

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14804492.8A Withdrawn EP3005495A4 (fr) 2013-05-28 2014-05-26 Outils de travail à têtes de travail interchangeables

Country Status (4)

Country Link
EP (1) EP3005495A4 (fr)
CN (1) CN105264723B (fr)
TW (1) TW201446439A (fr)
WO (1) WO2014193765A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4011559A1 (fr) 2020-12-09 2022-06-15 Dubuis et Cie Dispositif doté d'un système de couplage rapide pour fixer une tête interchangeable
USD1023710S1 (en) 2021-03-19 2024-04-23 Black & Decker Inc. Power tool

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH705121A1 (de) 2011-06-16 2012-12-31 Arx Ag Schnellkupplung zur Verbindung eines Wechselkopfes.
CH705122A1 (de) 2011-06-16 2012-12-31 Arx Ag Schnellkupplung zur Verbindung eines Wechselkopfes.
US10532481B2 (en) * 2015-11-25 2020-01-14 Ridge Tool Company Punch tool system
TWI805968B (zh) * 2020-11-25 2023-06-21 財團法人工業技術研究院 衝擊裝置及其衝擊用連動組件

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2036484A5 (fr) * 1969-03-14 1970-12-24 Cloup Jean
FR2154974A6 (fr) * 1971-10-01 1973-05-18 Libaud Bernard Expl Atel
DE10216213A1 (de) * 2002-04-10 2003-10-23 Klauke Gmbh Gustav Elektrohydraulisches Verpressgerät und Verfahren zum Betreiben desselben
SE505162C2 (sv) * 1995-03-22 1997-07-07 Pressmaster Tool Ab Verktygshuvud
DE19944229B4 (de) * 1999-09-15 2016-07-28 Gustav Klauke Gmbh Hydraulisches Handpressgerät und auswechselbarer Gerätekopf hierfür
US6324884B1 (en) * 2000-06-30 2001-12-04 Mastercool, Inc. Hand-held portable crimping tool
US8074485B2 (en) * 2008-07-08 2011-12-13 Tyco Electronics Corporation Tool head assemblies for pressing devices
CH705121A1 (de) * 2011-06-16 2012-12-31 Arx Ag Schnellkupplung zur Verbindung eines Wechselkopfes.
US9162353B2 (en) * 2012-04-09 2015-10-20 Armand Ciotti Hydraulic tool having interchangeable heads

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2014193765A1 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4011559A1 (fr) 2020-12-09 2022-06-15 Dubuis et Cie Dispositif doté d'un système de couplage rapide pour fixer une tête interchangeable
USD1023710S1 (en) 2021-03-19 2024-04-23 Black & Decker Inc. Power tool

Also Published As

Publication number Publication date
WO2014193765A1 (fr) 2014-12-04
TW201446439A (zh) 2014-12-16
CN105264723A (zh) 2016-01-20
EP3005495A4 (fr) 2017-01-18
CN105264723B (zh) 2018-01-26

Similar Documents

Publication Publication Date Title
US9573263B2 (en) Work tools having interchangeable work heads
WO2014193765A1 (fr) Outils de travail à têtes de travail interchangeables
US11833597B2 (en) Hydraulic power tool
US6718870B1 (en) Hand-held hydraulic pressing apparatus
EP1910035B1 (fr) Outil conçu pour le raccordement de tubes au moyen de manchons de raccordement
AU2006244052B2 (en) Improved swaging tool
KR102168530B1 (ko) 조작기용 커플링 장치
EP2514563A1 (fr) Pince de liaison actionnée par des ressorts
EP3366424B1 (fr) Siège magnétique à détachement rapide et réglable pour manchon
EP2981751B1 (fr) Dispositif de raccord rapide pour fluide sous pression
KR101808621B1 (ko) 유압 공구
MX2012014061A (es) Herramienta de insercion para inserto helicoidal espiral sin espiga.
US9833832B2 (en) Riveting tool
WO2015061425A1 (fr) Outil à puissance hydraulique
JP2018520010A (ja) 軸のカシメ工具
US20240131604A1 (en) Hydraulic Power Tool
US10449588B2 (en) Shaping tool for a workpiece, and device for deforming a workpiece using such a tool
US9884413B2 (en) Socket retaining tool using a spring-loaded keeper sleeve
US10124414B2 (en) Clamping assembly and clamping device with such a clamping assembly
US20090013523A1 (en) Tool for powered pressing of cable connectors
WO2007093891A1 (fr) Appareil de sertissage par replis avec une structure support comprenant une premiere et une seconde parties
JP2019537518A (ja) 軸のカシメ工具
US20180175575A1 (en) Tool heads and tool systems
EP3924118A1 (fr) Unité de poinçonnage pour machine à poinçonner
CN108068066B (zh) 转换夹头、与其配合使用的工具主体及配合使用方法

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20151218

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAX Request for extension of the european patent (deleted)
A4 Supplementary search report drawn up and despatched

Effective date: 20161221

RIC1 Information provided on ipc code assigned before grant

Ipc: H01R 43/042 20060101AFI20161215BHEP

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20200918

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20221201