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EP2944001B1 - Dispositif de compression à commande hydraulique et procédé permettant d'effectuer une opération de compression - Google Patents

Dispositif de compression à commande hydraulique et procédé permettant d'effectuer une opération de compression Download PDF

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Publication number
EP2944001B1
EP2944001B1 EP14700440.2A EP14700440A EP2944001B1 EP 2944001 B1 EP2944001 B1 EP 2944001B1 EP 14700440 A EP14700440 A EP 14700440A EP 2944001 B1 EP2944001 B1 EP 2944001B1
Authority
EP
European Patent Office
Prior art keywords
partial
crimping
piston
hydraulic
pressing
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.)
Active
Application number
EP14700440.2A
Other languages
German (de)
English (en)
Other versions
EP2944001A1 (fr
Inventor
Egbert Frenken
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.)
Gustav Klauke GmbH
Original Assignee
Gustav Klauke GmbH
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 Gustav Klauke GmbH filed Critical Gustav Klauke GmbH
Publication of EP2944001A1 publication Critical patent/EP2944001A1/fr
Application granted granted Critical
Publication of EP2944001B1 publication Critical patent/EP2944001B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/20—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping using a crimping sleeve
    • 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
    • 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
    • H01R43/048—Crimping apparatus or processes
    • 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
    • H01R43/20—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for assembling or disassembling contact members with insulating base, case or sleeve
    • 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
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49174—Assembling terminal to elongated conductor
    • Y10T29/49181—Assembling terminal to elongated conductor by deforming
    • Y10T29/49185—Assembling terminal to elongated conductor by deforming of terminal
    • 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
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/5313—Means to assemble electrical device
    • Y10T29/532—Conductor
    • Y10T29/53209—Terminal or connector
    • Y10T29/53213—Assembled to wire-type conductor
    • Y10T29/53222—Means comprising hand-manipulatable implement
    • Y10T29/53226—Fastening by deformation

Definitions

  • the invention initially relates to a hydraulically actuated pressing device, preferably designed as a hand-held device, according to the features of the preamble of claim 1.
  • the invention further relates to a method according to the features of the preamble of claim 8.
  • Such crimping devices and methods for crimping are preferably used for crimping, also known as crimping, of cable lugs with inserted cables.
  • a known pressing device compare DE-A1-3235040 , after touching the pressed part with a workpiece, a path limitation of the further travel path of the pressed part is triggered, which only permits a certain movement of the pressed part, starting from the position when the workpiece is touched. This allows workpieces of different sizes to be pressed approximately uniformly.
  • a second pressing is carried out on a workpiece that has already been pressed.
  • the pressed part moves a predetermined way again when workpiece contact begins, so that the workpiece can be destroyed.
  • the pressing force is always the same. Small workpieces are therefore usually pressed with too high a pressing force. As a result of this, a workpiece can be destroyed.
  • Another pressing tool is from the US-A-5195042 known.
  • a pressure sensor is provided, as well as a control of the maximum travel of the pressed part. It can Although a larger pressing force is exerted on larger workpieces to be crimped and a lower pressing force is exerted on smaller workpieces, but only as a function of a measurement of the workpiece to be crimped and according to a pressure measurement using a pressure sensor.
  • a press device is known in which only one partial piston acts on a first pressed part in a method on a first partial travel.
  • a comparable prior art is also from the US 2,863,346 A , the US 4,365,401 A and the WO 02/00368 A2 known.
  • the invention is concerned with the task of generally specifying a hydraulically actuated pressing device or device, preferably designed as a hand-held device, which, with a simple structure, makes it possible to be reliable, comparatively large and relatively large, without the need for tool changes relatively small workpieces, such as crimping cable lugs in particular.
  • the invention is also concerned with the task of specifying a method which is advantageous in this regard.
  • the stated object is first achieved in the subject matter of claim 1 with regard to the pressing device designed as a hand-held device, the aim being that the first pressing part is completely covered axially by the second pressing part.
  • the object is further achieved in a method for carrying out a pressing according to claim 8, with the aim being that the completion of a pressing action is determined by reaching a predetermined pressure of the hydraulic medium acting on the hydraulic piston, regardless of whether a pressing end position is achieved in the first or second partial travel path, an effective maximum pressure is exerted on an effective acting surface of a piston acting on the pressed part and that a change in the effective acting surface of the piston is controlled to specify the pressing force.
  • the larger maximum pressing force is to be achieved even with a smaller workpiece, it is possible, for example, to move such a smaller workpiece into the area of the larger maximum pressing force by changing the pressing counter-stop.
  • the press stamp impressions can be the same and the press stamp impressions can be molded into the press sleeve at different depths or the press sleeve can be deformed to different extents by the press stamp impressions, one of which Cable with a smaller diameter associated with the stamp impression is molded deeper into the compression sleeve or has deformed the compression sleeve more than a stamp impression assigned with the cable with a larger diameter.
  • both impressions of the press stamp are identical to one another in that they have caused less or more deformation of the press sleeve, but have not had any destructive effect, for example that the press sleeve has burst or cracked open.
  • a first and a second clamping part can be provided and a first and a second partial piston can be provided, which are telescopically movable in the common hydraulic cylinder against each other against the force of a respective return spring, of which in any case the first partial piston is the first clamping part Clamping of the workpiece moves, further, when the partial pistons are acted upon by hydraulic medium, both partial pistons, the first partial piston leading to the second partial piston, are moved into a clamping position resulting in clamping of the workpiece, but preferably only one of the pistons or one with the respective one Partial piston connected clamping part, on which the workpiece rests, and the movement of the partial piston into the clamping position, after reaching the clamping position, is ended.
  • a method beyond the clamping position therefore does not take place at least initially. Because only one of the partial pistons or a related clamping or pressing part rests on the workpiece, this pressing or clamping part which is in contact with it can deflect elastically when the workpiece moves to a certain extent, since a via the hydraulic medium Pressure equalization takes place to the other partial piston, which can deflect somewhat due to its return spring.
  • a first and a second clamping part can be provided and a first and a second partial piston, which are telescopically movable relative to each other against the force of a respective return spring in a common hydraulic cylinder, whereby in any case the first clamping part can be moved by the first partial piston for clamping the workpiece, whereby further, when the partial pistons are acted upon by hydraulic medium, both partial pistons, the first partial piston leading to the second partial piston, can be moved into a clamping position resulting in the clamping of the workpiece and the movement of the partial pistons in the clamping position can be ended.
  • the partial pistons are telescoped.
  • One part of the piston is assigned to only one inner area, while the other part of the piston is assigned to only one outer area. This can equally be the case with regard to the pressed parts moved by the partial pistons.
  • first partial piston forms a second hydraulic cylinder for the second partial piston.
  • the second sub-piston is sealed and moved from a cylindrical interior of the first sub-piston.
  • the second partial piston can be moved relatively to the first partial piston and can also be moved relatively to the first hydraulic cylinder in which the two partial pistons are accommodated together.
  • Each partial piston is preferably assigned its own press part, a first and a second press part.
  • both partial pistons can act on the first pressed part over part of the travel distance, preferably a travel distance that corresponds to the first travel partial path mentioned. If, as is further preferred, it is provided that the first partial application area is larger than the second partial application area, the first partial piston will advance within the first travel partial path.
  • the press parts mentioned can be formed in a form-fitting manner with respect to one another. If the second press part forms a stop surface for the first press part and the first press part is primarily moved in the above-mentioned constellation, the second press part and thus also the second partial piston are thereby inevitably taken along.
  • the second sub-piston with respect to the first hydraulic cylinder that is to say the hydraulic cylinder, in which ultimately both sub-pistons are accommodated, even if the second sub-piston only indirectly the first partial piston can be advanced further than the first partial piston.
  • the second sub-piston can thus be moved beyond the first sub-piston and the assigned second press part can then move further with respect to the first press part that has not moved further, in particular on the second travel sub-path mentioned.
  • the first partial application area is smaller than the second partial application area and also the restoring force of the return springs, which act on the first or second partial piston, is selected to be the same or in such a way that there is no opposite effect, then one First actuate the second piston.
  • the first press part that is not yet in contact with the workpiece will continue to advance, if necessary until there is a joint action on the workpiece or the first press part after the end of the first movement has reached the end - Partial route can not continue.
  • Both partial pistons are each acted upon by their own assigned first or second return spring. These restoring springs can also be selected differently with regard to their restoring force.
  • a method of the first or second partial piston or a hydraulic medium application as such is only up to one certain first force is given, or for example only as long as an operating button is pressed. If the first force is reached or the control button is released, there is no further supply of hydraulic fluid into the first hydraulic cylinder, so that the pressed parts do not move any further.
  • This can be used, for example, to first clamp a workpiece, but not yet, possibly not completely, to press it.
  • the design of the hydraulic piston in the form of two partial pistons means that a partial piston can be moved against spring force in such a holding position.
  • the press part can in particular be a crimp stamp.
  • the two press parts, the first and the second press part, can be combined to form an overall crimp stamp.
  • the second press part can form a central area of the overall crimping die and the first press part can form an outer area of the overall crimping die.
  • a maximum pressure is exerted on an effective pressure surface of a piston that presses on the pressing part.
  • the hydraulic piston as above
  • an apparatus for this method also described, for example, consists of two partial pistons.
  • the pressing force is controlled by changing the effective area of action of the piston.
  • the control of the pressing force is carried out without sensors, and it is also preferred that the control is carried out solely by the aforementioned change in the effective action area of the piston.
  • the pressing device also relate to the hydraulic device of a more general type, for example only for the purpose of clamping a workpiece.
  • it can be a hydraulic press ram that is supported on one side only on a workpiece that is supported on the other side, for example, by a support surface (independent of the hydraulic device, or another hydraulic press ram).
  • a pressing device 1 which is designed as a hand tool.
  • the pressing device 1 has a grip area 2 which is adapted approximately to the width of a hand with regard to its longitudinal extent.
  • An actuation switch 3 is assigned to the handle area.
  • the pressing device 1 shown is an electrohydraulically actuated pressing device 1 with an accumulator 4.
  • the accumulator 4 is arranged opposite to a working end 5 of the pressing device.
  • the in Figure 1 Press device 1 shown elongated, approximated to a rod shape, formed.
  • actuating device could also be designed far from the press head.
  • the pressing device 1 further has a pressing part 6, which is designed as a crimp stamp in the embodiment.
  • the pressing device 1 has a pressing counter-stop 7 against which a workpiece to be pressed can be placed, such as in FIG Figure 4 also shown.
  • the counter-stop 7 is in the exemplary embodiment part of a first swivel part 9, which in cooperation with a second swivel part 10, which are each attached to a device head 13 via swivel joints 11, 12, can be brought to mutual locking, so that the device head 13 about out Figure 3 apparent closed - but laterally open - plant management results.
  • the pressing device 1 has an electric motor 14, which is not shown in further detail and which preferably acts on a pump 16 via a gear 15.
  • hydraulic medium here preferably hydraulic oil
  • the hydraulic medium is accommodated in a hydraulic medium tank 19 which preferably surrounds the pump 16 and a return valve 18 in the exemplary embodiment.
  • the pump and the return valve is still on the WO-A1 02/95264 ( US 7 086 979 B2 ), the WO-A1 99/04165 ( US 6 202 663 B1 ) and the WO-A1 99/19947 ( US 6 276186 B1 . US 6,401,515 B2 ) referred.
  • a first hydraulic piston 20 is accommodated in the first hydraulic cylinder 17.
  • the first hydraulic cylinder 17 has a cylinder longitudinal axis A.
  • the first hydraulic piston 20 can be moved axially to the cylinder longitudinal axis A.
  • the first hydraulic piston 20 is further in through a first return spring 21 when the hydraulic pressure is released or the hydraulic medium flows out Figure 4 shown starting position retractable.
  • the first hydraulic piston 20 also has a first application surface, which results from the difference in the diameter dimensions a, outer diameter, and b, inner diameter, of the first hydraulic piston 20.
  • the first hydraulic piston 20, which is designed as a partial piston, carries a second hydraulic piston 22 in its interior, in the exemplary embodiment and preferably centrally in its interior.
  • the second hydraulic piston 22 has its own partial application area, which is determined by the diameter dimension b.
  • the partial application surfaces are given in a circular or circular shape.
  • the second hydraulic piston 22, also referred to as the second partial piston can be returned to its starting position against a second return spring 23 in the same way after pressing, as has already been described in principle with regard to the first hydraulic piston 20.
  • the first hydraulic piston 20 is connected to a first press part 24.
  • the first press part 24 which emerges from a through opening 25 in a cylinder base part 26 or also projects in the non-actuated state, is formed.
  • the second sub-piston 22 also continues into a piston rod which, on the other hand, as a second press part 27 in the press chamber R, which is also circumferentially closed in the exemplary embodiment, compare approximately Figure 3 , is free even when not in use.
  • first press part 24 is completely covered axially by the second press part 27.
  • first press part 24 can also protrude beyond the second press part 27 transversely to the cylinder longitudinal axis A and, for example, as further shown, nested with the second press part 27 in the initial state according to FIG Figure 4 match.
  • Both pistons 20 and 22 are telescoped.
  • the second partial piston 22 in relation to its second piston rod, projects beyond the first partial piston 20, in relation to its first piston rod.
  • the first sub-piston 20 correspondingly forms a second hydraulic cylinder for the second sub-piston 22.
  • the second sub-piston 22 can be moved by the dimension c relative to the first sub-piston 20, while the first sub-piston 20 can be moved by the dimension d relative to the first, hydraulic cylinder 17 fixed to the housing. Accordingly, the second partial piston 22 can be moved a maximum of the sum of the dimensions c and d.
  • the dimension d is set such that, starting from the cylinder base part 26, a stop part 27 extends in the first hydraulic cylinder 17, ie contrary to the direction of travel of a partial piston when a pressing process is carried out.
  • This can, and is preferred in the embodiment, be sleeve-like.
  • the dimension d can also be changed comparatively easily by using a stop part 28 having a different extension.
  • Both partial pistons 20, 22 can be used to act together on the second pressing part 27 via a first partial travel which corresponds to dimension d.
  • first partial travel which corresponds to dimension d.
  • second pressing part 27 can only be acted upon by the second partial piston 22.
  • the second sub-piston 22 can also be advanced further than the first sub-piston 20, although in the exemplary embodiment and, as can be seen, preferably the relative travel distance according to dimension c with respect to the second sub-piston 20 that applies to the second sub-piston 22 Hydraulic cylinder, is less than the dimension d for the maximum travel distance of the first piston part 20th
  • the partial application areas given by the dimensions a and b are preferably selected in the exemplary embodiment such that the first partial application area, which is assigned to the first partial piston 20, is larger than the second partial application area of the second partial piston 22.
  • the restoring forces of the restoring springs which usually and preferably increase approximately linearly in the exemplary embodiment with the extension of the first or second partial travel path according to dimension d or c, are preferably selected such that the restoring force of the second restoring spring 23 is greater than the restoring force of the first Return spring 21.
  • a cable lug 29 has a receiving space 30, in which an end of a cable 31, which is stripped in the exemplary embodiment, is inserted. By press action from on the outside of the receiving space 30 of the cable lug 29, the cable 31 is firmly and electrically connected to the cable lug 29.
  • the Figures 4 to 6 show the pressing of a comparatively large - with regard to the outer diameter of the receiving space 30 - cable lug.
  • hydraulic fluid here hydraulic oil
  • the downstream gear 15 and the pump 16 hydraulic fluid, here hydraulic oil
  • the pressure in the hydraulic medium space or in the cylinder space increases continuously as a result of the counterpressure caused by the return springs.
  • a significant increase in pressure begins when, as in Figure 5 shown, a first contact of the first pressed part 27 with the cable lug 29 takes place. Since the first partial piston 20 has not yet come to rest against the stop part 28, both partial pistons 20, 22 move further in the direction of the cable lug 29 to be crimped.
  • a pressure measurement could also take place in the cylinder space with regard to the pressure of the hydraulic medium or for example a pressure measurement in the piston skirt of the first or second partial piston.
  • a hydraulic piston could be retracted, for example by actuating, in particular motorized, opening of a return valve.
  • the return valve 18 has responded automatically solely as a function of the pressure of the hydraulic medium reached, that is to say has moved into the open position, the hydraulic medium runs back, the pressure drops in the cylinder chamber and the pistons are returned to their starting position by the return springs Figure 4 moved back.
  • the first piston 20 is already in contact with the stop part 28 before the second pressing part 27 its final compression position ( Figure 9 ) has reached.
  • the pressing force is only determined by the partial application surface of the second hydraulic piston 22.
  • a telescopic ancestor of the second press part 27 with respect to the first press part 24 occurs.
  • such telescoping could also occur beforehand in the course of a pressing process. This is evidently also dependent on the force of the return springs 21, 23.
  • a pressing force that can be exerted by the pressing part 24 or 27 is controlled accordingly depending on the position of the pressing part 24 or 27 on the travel path, specifically in the exemplary embodiment by the position of the stop part 28, that the pressing part 24 and / or 27 only achieves a maximum in a final press position within a first travel partial path Pressing force is exerted.
  • the first partial travel is, for example, according to the travel of the first hydraulic piston 20 from an initial position Figure 7 until the stop 28 is reached, as in Figure 9 given, determined.
  • a partial press force that is only lower than the maximum pressing force is exerted, in the exemplary embodiment determined by the then only effective partial application area of the second hydraulic piston 22 according to the dimension With the same hydraulic pressure, the smaller application area also produces only a smaller force.
  • Figure 10 is a hydraulic device, in more detail the hydraulic pressing device, as has already been described above, is shown in the state of clamping a workpiece 8.
  • the second pressing part 27, which can also be used here only as a clamping part, is telescopically advanced to the first pressing part or clamping part 24.
  • the press or clamping parts 24, 27 mentioned are connected to the partial pistons 20, 22 already described. Both partial pistons 20, 22 are moved a little in the extension direction in the common hydraulic cylinder 27, in this case the second partial piston 22 acting on second clamping part 27 leads to first partial piston 20 acting on first clamping part 24.
  • both clamping parts 24, 27 also acts on the workpiece 8.
  • both clamping parts 24, 27 it is also possible for both clamping parts 24, 27 to have a clamping effect on the workpiece 8 at the same time.
  • a compression sleeve 33 is shown, first of all in Figure 11 , in the initial state, before pressing.
  • the compression sleeve 33 is given as a tubular part of constant diameter.
  • the compression sleeve 33 can be seen from two opposite sides of cables 31 and 34 of larger or smaller diameter.
  • the cable 34 shown clearly shows a clear radial clearance to an inner surface of the compression sleeve 33.
  • it can be copper or aluminum cables.
  • each cable is more preferably composed of a plurality of strands.
  • the various common cable cross-sections can be used.
  • it can be the pairing (large / small) in each case from 35 mm 2 to 16 mm 2 , 95 mm 2 to 16 mm 2 , 185 mm 2 to 70 mm 2 , 120 mm 2 to 95 mm 2 , and also others Variants are possible, e.g. 70 mm 2 to 16 mm 2 , 120 mm 2 to 95 mm 2 etc.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Press Drives And Press Lines (AREA)
  • Automatic Assembly (AREA)

Claims (9)

  1. Dispositif de pressage (1) actionnable hydrauliquement, de préférence sous la forme d'un outil à main, comprenant un piston hydraulique (20, 22) qui est mobile coaxialement par rapport à un axe longitudinal de cylindre (A) dans un premier cylindre hydraulique (17) à l'encontre de la force d'un ressort de rappel (21, 23) et qui est relié, le cas échéant par une tige de piston, à un élément de pressage (24, 27) pour effectuer un pressage, dans lequel le piston hydraulique (20, 22) présente une surface de charge pour générer une force de pressage par l'action d'un fluide hydraulique sous pression hydraulique sur le piston hydraulique (20, 22), dans lequel le piston hydraulique (20, 22) est constitué d'un premier et d'un deuxième piston partiel (20, 22) avec une première et une deuxième surface de charge partielle, les surfaces de charge partielles peuvent être soumises à l'action du fluide hydraulique ayant une même pression hydraulique, les deux pistons partiels (20, 22) sont reliés respectivement à un premier et un deuxième élément de pressage (24, 27), dans lequel le deuxième élément de pressage (27) ne peut plus être sollicité que par le deuxième piston partiel (22) lors d'une course plus longue et le deuxième élément de pressage (27) peut être soumis à l'action des deux pistons partiels (20, 22) sur un premier trajet partiel de déplacement qui est déterminé par le déplacement du premier piston partiel (20) depuis une position initiale jusqu'à atteindre une butée (28), caractérisé en ce que le premier élément de pressage (24) est complètement couvert axialement par le deuxième élément de pressage (27).
  2. Dispositif de pressage selon la revendication 1, caractérisé en ce que les pistons partiels (20, 22) sont guidés télescopiquement l'un dans l'autre.
  3. Dispositif de pressage selon l'une des revendications précédentes, caractérisé en ce que le premier piston partiel (20) forme un deuxième cylindre hydraulique pour le deuxième piston partiel (22).
  4. Dispositif de pressage selon l'une des revendications précédentes, caractérisé en ce que le deuxième piston partiel (22) peut être déplacé plus en avant par rapport au premier cylindre hydraulique (17) que le premier piston partiel (20).
  5. Dispositif de pressage selon l'une des revendications précédentes, caractérisé en ce que les surfaces de charge partielles sont de dimensions différentes, dans lequel, de préférence, la première surface de charge partielle est plus petite que la deuxième surface de charge partielle.
  6. Dispositif de pressage selon l'une des revendications précédentes, caractérisé en ce que les deux pistons partiels (20, 22) sont actionnés respectivement par un premier (21) et un deuxième ressort de rappel (23).
  7. Dispositif de pressage selon l'une des revendications précédentes, caractérisé en ce que l'élément de pressage (24, 27) est une matrice de sertissage.
  8. Procédé pour effectuer un pressage avec un dispositif de pressage (1) actionnable hydrauliquement qui présente un élément de pressage mobile (24, 27) et qui est de préférence conçu comme un outil à main, dans lequel a lieu un actionnement par fluide hydraulique pour déplacer l'élément de pressage, dans lequel des pièces d'œuvre (8) de différentes dimensions peuvent être reçues pour pressage en étant supportées par une contre-butée de pressage, dans lequel l'élément de pressage (24, 27) parcourt un trajet jusqu'à ce qu'une position de fin de pressage correspondant à l'achèvement d'une action de pressage soit atteinte, dans lequel, en outre, dans le cas d'une grande pièce d'œuvre (8), l'élément de pressage (24, 27) parcourt, jusqu'à ce que la position de fin de pressage soit atteinte, un trajet de déplacement plus court et, dans le cas d'une pièce d'œuvre (8) plus petite, l'élément de pressage (24, 27) parcourt, jusqu'à ce que la position de fin de pressage soit atteinte, un trajet plus long, dans lequel, en outre, une force exerçable par l'élément de pressage (24, 27) est prédéterminée en fonction d'une position de l'élément de pressage (24), 27) sur le trajet de telle manière qu'une force de pressage maximale ne soit exercée par l'élément de pressage (24, 27) que dans le cas d'une position de fin de pressage à l'intérieur d'un premier trajet partiel et qu'une force de pressage partielle inférieure à la force de pressage maximale, ne soit exercée que dans le cas d'une position de fin de pressage à l'intérieur d'un deuxième trajet partiel qui suit le premier trajet partiel, caractérisé en ce que l'achèvement d'une action de pressage est déterminé par l'atteinte d'une pression prédéterminée du fluide hydraulique agissant sur le piston hydraulique (20, 22), en ce que, indépendamment du fait qu'une position de fin de pressage est atteinte dans le premier ou dans le deuxième trajet partiel, une pression maximale identique est exercée sur une surface de charge effective d'un piston agissant sur l'élément de pressage (24, 27), et en ce qu'une modification de la surface de charge effective du piston est commandée pour prédéterminer la force de pressage.
  9. Procédé selon la revendication 8, caractérisé en ce que, pour réaliser une liaison pressée conductrice entre un manchon de pressage (33) et deux câbles de diamètre différent, le manchon de pressage (33), qui présente un diamètre intérieur constant sur sa longueur, est soumis à un pressage dans deux zones opposées dans une direction longitudinale de la douille de pressage (33) avec les câbles de diamètre différent par action deux fois du même élément de pressage (24, 27) depuis l'extérieur sur la douille de pressage (33), réalisée côte à côte sur la longueur de la douille de pressage (33) et associée respectivement à une zone d'extrémité à presser du câble (31) de plus grand diamètre et du câble (31) de plus petit diamètre, avec une force de pressage différente lors des deux actions.
EP14700440.2A 2013-01-09 2014-01-06 Dispositif de compression à commande hydraulique et procédé permettant d'effectuer une opération de compression Active EP2944001B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013100183.1A DE102013100183A1 (de) 2013-01-09 2013-01-09 Hydraulisch betätigbare Pressvorrichtung, Verfahren zur Durchführung einer Verpressung, Verfahren zur Herstellung einer elektrisch leitfähigen Pressverbindung, elektrisch leitfähig verpresste Presshülse, Verfahren zum Klemmen eines Werkstücks und hydraulische Vorrichtung
PCT/EP2014/050075 WO2014108361A1 (fr) 2013-01-09 2014-01-06 Dispositif de compression à commande hydraulique, procédé permettant d'effectuer une opération de compression, procédé de production d'un assemblage par compression électroconducteur, cosse à compression électroconductrice, procédé de serrage d'une pièce et dispositif hydraulique

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EP2944001B1 true EP2944001B1 (fr) 2020-02-26

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US (1) US10468847B2 (fr)
EP (1) EP2944001B1 (fr)
KR (1) KR102112983B1 (fr)
CN (1) CN104904076B (fr)
AU (1) AU2014204921B2 (fr)
BR (1) BR112015015248A2 (fr)
CA (1) CA2896736A1 (fr)
DE (1) DE102013100183A1 (fr)
ES (1) ES2790643T3 (fr)
MX (1) MX377006B (fr)
RU (1) RU2668989C2 (fr)
WO (1) WO2014108361A1 (fr)
ZA (1) ZA201504940B (fr)

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AU2014204921B2 (en) 2018-03-01
RU2668989C2 (ru) 2018-10-05
US20150364889A1 (en) 2015-12-17
CN104904076B (zh) 2017-11-10
MX2015008746A (es) 2015-11-13
KR102112983B1 (ko) 2020-05-20
RU2015133180A (ru) 2017-02-15
DE102013100183A1 (de) 2014-07-10
KR20150104621A (ko) 2015-09-15
WO2014108361A1 (fr) 2014-07-17
AU2014204921A1 (en) 2015-07-09
MX377006B (es) 2025-03-07
ZA201504940B (en) 2016-10-26
CA2896736A1 (fr) 2014-07-17
US10468847B2 (en) 2019-11-05
CN104904076A (zh) 2015-09-09
BR112015015248A2 (pt) 2017-07-11
EP2944001A1 (fr) 2015-11-18
ES2790643T3 (es) 2020-10-28

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