EP3393693B1 - Keiltrieb - Google Patents

Keiltrieb Download PDF

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Publication number
EP3393693B1
EP3393693B1 EP16819086.6A EP16819086A EP3393693B1 EP 3393693 B1 EP3393693 B1 EP 3393693B1 EP 16819086 A EP16819086 A EP 16819086A EP 3393693 B1 EP3393693 B1 EP 3393693B1
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EP
European Patent Office
Prior art keywords
transverse direction
sliding
guide
slide
contact surface
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Application number
EP16819086.6A
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German (de)
English (en)
French (fr)
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EP3393693A1 (de
Inventor
Harald Weigelt
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Individual
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/32—Perforating, i.e. punching holes in other articles of special shape
    • B21D28/325—Perforating, i.e. punching holes in other articles of special shape using cam or wedge mechanisms, e.g. aerial cams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/40—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by wedge means

Definitions

  • the invention relates to a wedge drive for deflecting a high vertical pressing force of in particular over 100 kN into a horizontal, linear working movement according to the preamble of claim 1.
  • wedge drives are mostly used in forming processes in which materials have to be formed with very high expenditure of force and with very high precision.
  • the main field of application of such wedge drives is the automotive industry.
  • the wedge drives are used here for the production of body parts, in particular for processing solid sheet metal parts, such as, for example, cutting, punching or shaping sheet metal parts.
  • solid sheet metal parts such as, for example, cutting, punching or shaping sheet metal parts.
  • work movements must be carried out with extremely high workers, which can easily exceed 1,000 kN.
  • work movements must be carried out with high precision, since only then can the required accuracy of fit of the body parts produced in this way be ensured.
  • wedge drives of the generic type are particularly well suited to meeting the requirements mentioned in the manufacture of body parts.
  • the wedge drives are used in a pressing tool.
  • the press tool includes a press that exerts an extremely high press force in the vertical direction on the wedge drive.
  • the vertical press force which the press exerts on the wedge drive can be at least 100 kN, in particular at least 500 kN, in particular between 1,000 and 50,000 kN.
  • the wedge drives are designed in such a way that they can withstand a corresponding press force and can convert the vertical press movement, via which the vertical press force is exerted on them, into a horizontal, linear working movement. With the working movement, a working force can then be applied which, depending on the specific configuration of the wedge drive, is a certain percentage less than the vertical pressing force exerted on the wedge drive.
  • An essential property of generic wedge drives is to ensure that the working movement is actually carried out linearly, because only then can a wedge drive ensure sufficient precision when carrying out a forming process.
  • generic wedge drives are designed so that they include a driver element, a slide element and a slide element receptacle.
  • the slide element receptacle is designed to absorb the vertical press force that is exerted by the vertical press movement.
  • the slide element receptacle is thus designed to be fixed in position to a movable press element of a press with which the press performs the vertical press movement.
  • the driver element is designed to be fixed vertically spaced from the slide element receptacle in a fixed position and immovable, in particular on a base element of the press tool provided for this purpose.
  • the slide element is arranged vertically between the slide element receptacle and the driver element and attached to the slide element receptacle so as to be linearly displaceable. In the operating situation, it rests on the driver element with a contact force caused by the press force and is also linearly movable.
  • a linear driver guide is provided between the driver element and the slide element and a guide device between the slide element receptacle and the slide element, the angle between the linear direction of the driver guide and the linear direction of the guide device being selectively selected.
  • the driver guide is designed to ensure a linear guidance direction of the slide element along the driver element in a driver sliding direction
  • the guide device is designed to ensure a linear guidance direction of the slide element along the slide element receptacle in a sliding direction.
  • the driver sliding direction and the sliding direction form an angle with one another and with the vertical direction and both lie in a plane in which the vertical direction also lies.
  • the angle that the driver sliding direction forms with the sliding direction is usually in a range between 30 ° and 120 °. If such a generic wedge drive is installed in a press tool for its intended purpose and the press performs a press movement, then the slide element holder, which is connected to the movable press element, is moved in the vertical direction, whereas the driver element remains immobile.
  • the slide element receptacle is thus moved in the vertical direction relative to the driver element.
  • This causes a horizontal, linear working movement of the slide element, which is connected to the slide element receptacle via the guide device and to the driver element via the driver guide and thus performs the linear, horizontal working movement.
  • the conversion of the vertical press movement into a horizontal working movement takes place via that the sliding direction and the driver sliding direction both to each other and to the vertical direction form an angle of> 0 °.
  • wedge drives with different angles between the sliding direction and the driver sliding direction and between the sliding direction and the vertical direction or the driver sliding direction and the vertical direction are known. These angles of the wedge drive are selected with regard to the angle of inclination of a component / body part to be machined.
  • the auto industry has agreed on 5 ° steps. If a flange inclined downwards at 37 ° is to be trimmed, a wedge drive with a direction of the working movement of 50 to 55 ° could be used, for example.
  • the length of the displacement path of the slide element in the horizontal direction is also determined by setting this angle when the slide element receptacle covers a certain distance in the vertical direction.
  • the degree of force transmission from the vertical press force to the horizontal work force is determined by the angle.
  • the horizontal direction (direction of the working movement) does not necessarily have to be 90 ° to the vertical direction, but can have an angle between 40 ° and 130 ° to the vertical direction.
  • a major problem in the implementation of generic wedge drives is to design the guides between the slide element and the slide element receptacle or between the slide element and the driver element in such a way that a linear working movement that is as precise as possible can be ensured when high press forces are exerted on the wedge drive.
  • the present invention is thus based on the objective technical task of providing a wedge drive which can be manufactured as simply and inexpensively as possible and at the same time meets the above-mentioned requirements as well as possible.
  • the wedge drive comprises a slide element, a driver element and a slide element receptacle.
  • the slide element is arranged in a vertical direction between the driver element and the slide element receptacle.
  • the slide element and the slide element receptacle are designed as two guide elements on which a slide plate formation is arranged to provide a guide device for linearly guiding the slide element along the slide element receptacle in a sliding direction.
  • the guide device comprises the slide plate formation.
  • the sliding direction has an angle between 10 ° and 80 °, in particular between 20 ° and 70 °, to the vertical direction.
  • the guide device comprises a central element which is provided on a first of the two guide elements on its side facing the second guide element.
  • the Sliding plate formation comprises at least two sliding plates, which are designed as side sliding plates and are fixed to a second of the two guide elements.
  • the center element can be fixed to the slide element and the side slide plates to the slide element receptacle.
  • the middle element can be fixed to the slide element receptacle and the side slide plates can be fixed to the slide element.
  • the side sliding plates are spaced from one another in a transverse direction that is perpendicular to the sliding direction and, in particular, also perpendicular to the vertical direction, and the central element is arranged in the transverse direction between the side sliding plates.
  • the side sliding plates thus frame the central element.
  • the side slide plates are preferably designed as slide plates produced separately from the second guide element and are fastened to the second guide element. It can be attached, for example, using screws.
  • the side slide plates are designed so that the first guide element can slide along them without high frictional forces occurring.
  • the side sliding plates can be designed as sliding plates made of bronze.
  • the central element can, for example, be materially connected to the first guide element, for example designed as a one-piece component with the first guide element, for example as a metal casting.
  • the central element can be designed as a component which is separate from the first guide element and which is fixed to the first guide element, for example by means of screws.
  • the central element can be designed as a central sliding plate, so that the second guide element on the central sliding plate can slide along with the least possible friction.
  • the central sliding plate can be designed as a sliding plate made of bronze.
  • the second guide element has two steps that are spaced apart from one another in the transverse direction, each of the side sliding plates being in contact with one of the two steps with a form fit acting in the transverse direction.
  • the two steps are thus opposite to each other in the transverse direction.
  • a first of the side sliding plates thus rests with a portion of its surface on a surface portion of a first of the two steps, and a second of the side sliding plates rests with a portion of its surface on a surface portion of a second of the two steps.
  • the positive fit prevents the second side sliding plate from being displaced in the transverse direction.
  • the positive fit thus prevents a displacement of the first side slide plate when the center element exerts a force on the first side slide plate in a positive direction along the transverse direction, while the positive fit between the second side slide plate and the second stage prevents a displacement of the second side slide plate, when the center member applies a force to the second side slide plate in a negative direction along the transverse direction.
  • the form fit is each guaranteed by the step, which is formed in the second guide element in particular in that between two surface sections, each flat and spanned by the sliding direction and the transverse direction, a height offset is provided, which is realized by a flat surface that runs along a transverse transverse direction that runs perpendicular to the transverse direction and perpendicular to the sliding direction, and which is spanned in particular by the sliding direction and the transverse transverse direction.
  • the form fit between the first side slide plate and the first stage acts unidirectionally in a positive direction along the transverse direction and the form fit between the second side slide plate and the second stage unidirectionally in a negative direction along the transverse direction, while the middle element with the first guide element is bidirectional in both positive as well as in the negative direction along the transverse direction secured against displacement, in particular is designed in one piece with this.
  • prevention of movement by means of a form fit always means that movement is avoided according to the possibilities of the material used.
  • the form fit refers to a force acting at the level of the surface or the surface section of the side sliding plate and step, via which the respective elements are in contact to provide the form fit otherwise the elements may tilt relative to one another about an axis of rotation perpendicular to the transverse direction.
  • the form fit thus prevents a movement in the transverse direction in which the elements do not simultaneously rotate about an axis of rotation perpendicular to the transverse direction.
  • at least one or all of the sliding plates, in particular the side sliding plates and / or the central sliding plate provided as a central element can be formed in one piece.
  • a wedge drive according to the invention is thus very simply constructed and, due to the interaction of its features, enables precise linear guidance of the slide element for executing a precise linear working movement of the slide element even under considerable stress from the press force.
  • the interaction of the features is based in particular on the fact that the middle element is held bidirectionally stable on the first guide element in the first transverse direction, while the side slide plates are held stable with respect to the second guide element via their form-fit connections, while the middle element is arranged in the transverse direction between the side slide plates and in particular directly rests against the side sliding plates, the central element and the side sliding plate preferably being formed in one piece.
  • the side sliding plates thus form a guide frame, which acts in the transverse direction, for the central element, in which the central element is safely guided.
  • the central element is securely guided in the transverse direction by the side slide plates and the side slide plates are securely guided on the second guide element and the central element is securely guided on the first guide element, the first guide element is thus safely guided to the second guide element, ie the slide element is safely guided in the transverse direction Slide element holder out.
  • a movement of the slide element for receiving the slide element in the transverse direction can thus at least largely be avoided.
  • the press exerts a pressing force perpendicular to the transverse direction in the vertical direction while performing a working movement of the slider element, thus enables the wedge drive according to the invention through the interaction of its features a linear, horizontal guidance of the slide element relative to the slide receptacle.
  • wedge drive according to the invention enables simple, high-precision manufacturing of the wedge drive in such a way that there is only extremely little play, in particular a play of less than 2/100 mm, between the slide element and the slide element holder in the transverse direction, while the slide element is in a working movement performs.
  • This property of wedge drives according to the invention is based on the fact that the guide device obtains its stability in the transverse direction from the fact that a very small number of components can be used for the guide device, the components being supported by a form fit on the slide element and the slide element holder, with each slide plate in particular the sliding plate formation is supported on the slide element or the slide element receptacle directly via a form fit acting in the transverse direction.
  • slide plate formations have a large number of slide plates arranged next to one another in the transverse direction.
  • manufacturing tolerances inevitably occur, so that the arrangement of several sliding plates next to one another in the transverse direction inevitably leads to play that results from the sum of the manufacturing tolerances.
  • the wedge drive according to the invention is particularly preferably designed in such a way that the central element rests directly on the side sliding plates, so that any additional play that could arise from the insertion of further elements between the side sliding plates and the central element is avoided per se.
  • manufacturing costs for the manufacture of additional elements can thereby be avoided.
  • the guide device consists of the side sliding plates and the central element and in particular a return stroke section provided on the central element, the mentioned elements of the guide device in particular each being formed in one piece.
  • the preferably provided return stroke section can be formed integrally in one piece with the central element, in particular the central sliding plate provided as the central element.
  • the sliding plate formation of the guide device consists of the side sliding plates and the central sliding plate provided as a central element, since this enables the geometric dimensions of the side sliding plates and the central sliding plate to be set particularly precisely, whereby play in the transverse direction can be further reduced.
  • the guide device can in particular exclusively have the sliding plates of the sliding plate formation as the only sliding plates providing sliding surfaces required for sliding the slide element for receiving the slide element.
  • a central sliding plate when a central sliding plate is provided as the central element, it can also contribute in particular that the central sliding plate with the first guide element has a positive and negative effect Forms direction running along the transverse direction form fit.
  • Such a bidirectional form fit can be implemented especially free of play between the first guide element and the central slide plate if the central slide plate is formed in one piece, so that the manufacturing tolerance is only due to the manufacture of a single component, whereby the play between the central slide plate and the first guide element is kept particularly low can.
  • the central element is each arranged directly on the side sliding plates with a play in the transverse direction of less than 0.04 mm, in particular less than 0.02 mm, in particular less than 0.01 mm.
  • the wedge drive according to the invention can be designed in such a way that the slide element is guided displaceably along the slide element receptacle in the sliding direction over a displacement length, the slide element having less play in the transverse direction relative to the slide element receptacle relative to the slide element receptacle in every position along the sliding direction within the displacement length than 0.04 mm, in particular less than 0.02 mm.
  • the guide device is designed such that the first guide element to the second guide element via a guide that extends in the sliding direction Displacement length is displaceable, the displacement length being at least 0.5 times, in particular between 0.5 times and 3 times the extension of the slide element in the transverse direction.
  • the sliding plate formation has a constant cross-section perpendicular to the sliding direction, at least in a sliding section which runs in the sliding direction and has at least the sliding length. In this way, a particularly uniform and very precisely linear guidance of the slide element along the slide element receptacle can be ensured over the entire displacement length.
  • a return stroke section is provided on the side of the center element facing the second guide element, which has two holding sections which protrude in the transverse direction over the center element and in the transverse direction run in sections along the side slide plates.
  • the return stroke section can be designed as a plate that is separately fixed to the central element.
  • the return stroke section can be designed in one piece with the central element.
  • the center element can be designed as a center slide plate which has the return stroke section, the holding sections being spaced apart from the first guide element.
  • a wedge drive according to the invention is usually used in a press tool, the slide element receptacle being connected to a movable press element.
  • the movable press element usually performs a downward movement in the vertical direction during a working stroke, as a result of which the slide element is forced to a linear, horizontal working movement due to the vertical relative movement between the slide element receptacle and the driver element.
  • the movable press element moves vertically in the opposite direction compared to the working stroke, ie usually vertically upwards.
  • the return stroke section extends with a holding section in the transverse direction in sections along the side slide plates, one of the side slide plates being arranged at least in sections between the first guide element and the return lift section.
  • the side slide plates exert a working force on the first guide element, while a return stroke force is applied between the holding sections and the side slide plates during a return stroke.
  • the return stroke section extends from the first guide element beyond the side slide plates to the second guide element, the holding sections each extending along a section in the transverse direction between the side slide plates and the second guide element.
  • a holding section thus extends over a section in the transverse direction with reference to a direction perpendicular to the transverse direction and perpendicular to the sliding direction between a side sliding plate assigned to it and the second guide element.
  • the return stroke section can be designed to be particularly robust, for example the return lift section can be arranged in a recess of the second guide element provided for this purpose.
  • a return stroke force can then be transmitted between the first and second guide elements via the section in the transverse direction in which the holding sections are arranged between the side slide plates and the second guide element to which the side slide plates are attached.
  • the first guide element is particularly preferably designed as the slide element and the second guide element as the slide element receptacle.
  • each side slide plate rests against the second guide element with at least two contact surfaces.
  • a first contact surface of the respective side sliding plate runs in the transverse direction and in the sliding direction, the respective side sliding plate being pressed with its first contact surface against the second guide element via fastening means.
  • Each side slide plate also has a second contact surface which runs perpendicular to the transverse direction.
  • each of the side sliding plates has at least one sliding contact surface with which it is attached to the central element is applied.
  • each side sliding plate runs perpendicular to the transverse direction, the sliding contact surface and the second contact surface lying on two opposite sides of the respective side sliding plate pointing away from each other, and the first contact surface of the side sliding plate extending, in particular exclusively, in an area that extends in the transverse direction extends between the sliding contact surface and the second contact surface.
  • the side slide plates each have a second sliding contact surface that runs parallel to the first contact surface, the press force being transmitted to the slide element via the second sliding contact surface during a working stroke and the slide element being transmitted to the slide element on the second sliding contact surface during the working movement and during during the working movement, the slide element slides along the second sliding contact surface, resting on the latter.
  • each side slide plate can rest with its second contact surface on the step of the second guide element.
  • the guide property of the guide device can be particularly advantageous via the contact surfaces and the sliding contact surface, which comprises a side sliding plate and via which contact with the second guide element and the central element is ensured by the side sliding plate resting against the second guide element and the central element.
  • the term “two elements in contact” in the present description should always be understood to mean that the two elements are spaced apart from one another by a maximum of 0.01 mm.
  • the first contact surface of each side slide plate is particularly preferably larger than the second contact surface and larger than the sliding contact surface. A force that is transmitted via the side slide plate during the working stroke can be transmitted to the first guide element in a particularly reliable and uniform manner via the consequently very large first contact surface.
  • the second contact surface and the sliding contact surface serve to guide the two guide elements with respect to one another in the transverse direction. This requires the provision of considerable surfaces, but in particular the provision of a contact surface, ie second contact surface and sliding contact surface, which is smaller than the contact surface to be provided, ie first contact surface, is sufficient for transferring the force occurring during the working stroke.
  • the first contact surface is particularly preferably spanned by a plane that is spanned by the transverse direction and the sliding direction.
  • the second contact surface and the sliding support surface are particularly preferably each spanned by a plane that passes through the transverse transverse direction and the sliding direction is spanned.
  • a correspondingly flat configuration of the contact surfaces and the sliding contact surfaces of the side slide plates ensures particularly reliable power transmission during a working stroke and particularly reliable guidance perpendicular to the transverse direction.
  • each side sliding plate has a third contact surface with which it rests against the second guide element, the third contact surface extending from the second contact surface in the transverse direction away from the first contact surface.
  • the step on which the side slide plate assigned to it rests runs between the first and the third contact surface, the second contact surface resting on the surface of the step that forms the height offset of the step.
  • the surface forming the height offset of the step naturally runs in the transverse transverse direction and is particularly preferably designed as a plane which is spanned by the transverse transverse direction and the sliding direction.
  • the third contact surface is particularly preferably spanned by a plane which is spanned by the transverse direction and by the sliding direction, whereby a particularly stable contact and thus fixing of the side sliding plate on the second guide element can be ensured.
  • Each side slide plate preferably has a return stroke contact surface which runs in the transverse direction between the slide contact surface and the first contact surface.
  • a return stroke section provided on the central element can rest against the return stroke contact surface, via which one during the return stroke occurring force can be transmitted.
  • the return stroke contact surface is particularly preferably spanned by a plane that is spanned by the transverse direction and the sliding direction.
  • the return stroke contact surface is particularly preferably smaller than the first contact surface, since only the force that occurs during a return stroke is to be transmitted via the return stroke contact surface, which force is significantly smaller than the force to be transmitted over the first contact surface that occurs during the working stroke.
  • the preferred embodiment can ensure a particularly small overall size of the wedge drive, to which in particular the provision of the smallest possible return stroke contact surface can also contribute. At this point it should be noted that for the implementation of wedge drives, maintaining small sizes is a particularly desirable goal, which is conventionally difficult to achieve due to the necessarily very robust design of a wedge drive.
  • the central element is designed as a central sliding plate and is fixed to the first guide element, the first guide element having a surface profile that is stepped along the transverse direction on its surface facing the central sliding plate.
  • a surface profile stepped along the transverse direction means that, in the case of a cross-sectional view perpendicular to the sliding direction, the surface profile has a stepped profile depending on the transverse direction.
  • step offsets occur in a direction that is perpendicular to the transverse direction and perpendicular to the sliding direction.
  • the center slide plate On its surface facing the first guide element, the center slide plate has a surface profile that corresponds to the stepped surface profile of the first guide element, with a form fit acting in the transverse direction between the first guide element and the middle sliding plate is guaranteed. With its stepped surface profile, the central slide plate is in contact at least in sections with the stepped surface profile of the first guide element.
  • the corresponding surface courses are preferably designed in such a way that they provide a bidirectional form fit along the transverse direction between the central sliding plate and the first guide element.
  • the form fit prevents a movement of the central sliding plate in the transverse direction relative to the first guide element both when a force is exerted on the central sliding plate along the transverse direction in a positive direction and when a force is exerted on the central sliding plate along the transverse direction in a negative direction.
  • the stepped surface profile of the first guide element is at least partially, in particular completely, formed by three fixing surfaces of the guide element.
  • a first fixing surface is arranged in the transverse direction between a second and a third fixing surface.
  • the first fixing surface is spanned by a plane that is spanned by the transverse direction and by the sliding direction.
  • the second and third fixing surfaces are each spanned by a plane which is spanned by the transverse transverse direction and by the sliding direction.
  • the second and third fixing surfaces ensure that the center slide plate is guided bidirectionally in the transverse direction, since such a contact between the second and third fixing surface and the first fixing surface arranged between them, which in turn runs in the transverse direction and the sliding direction
  • Middle slide plate and the first guide element can be guaranteed in which the middle slide plate both in the event of a force acting in both a positive and a negative direction along the transverse direction, it rests against the second or third fixing surface, so that a movement of the central sliding plate along the transverse direction is avoided.
  • the second and third fixing surfaces extend from the first fixing surface to the second guide element, the central sliding plate being arranged between the second and third fixing surfaces and the central sliding plate on the three fixing surfaces via its corresponding surface profile and is pressed against the first fixing surface via fastening means.
  • the three fixing surfaces thus form a recess in which a section of the central sliding plate is arranged.
  • the described embodiment can thus be designed to be particularly robust and easy to manufacture, since by providing a corresponding recess in the solid second guide element, the central slide plate with its corresponding surface profile can be inserted into this recess without the need for delicate machining of the central slide plate or the first guide element .
  • the area of the first fixing surface is particularly preferably at least twice as large as the common area of the second and third fixing surface, whereby the fact can be taken into account that a greater force has to be transmitted via the first fixing surface than via the second and third fixing surfaces.
  • a particularly robust wedge drive can be used here be implemented with the smallest possible size.
  • the sliding plate formation particularly preferably consists of the side sliding plates and the central sliding plate.
  • the play of the guide device can be reduced to a minimum, since only a few components are provided for realizing the guide device, in which manufacturing tolerances have to be taken into account.
  • the manufacturing costs can be kept particularly low in this way.
  • the guide device which linearly guides the slide element to the slide element receptacle can consist of the slide plate formation.
  • all surfaces via which the first guide element and the second guide element are in contact with the slide plates of the slide plate formation and in particular also the slide plates with one another for guiding the slide element for receiving the slide element are designed as flat surfaces which run either perpendicular to the transverse direction or perpendicular to the transverse transverse direction .
  • Such particularly inexpensive production tools cannot create surfaces inclined to one another, but the components can be designed in such a way that they only have boundary surfaces that run either perpendicular to the transverse direction or perpendicular to the transverse transverse direction.
  • both a guide with respect to the vertical press force and a guide with respect to the force occurring during the working movement of the slide element in the transverse direction is ensured.
  • the common area of the surfaces that run perpendicular to the transverse transverse direction can be greater than the common area of the surfaces that run perpendicular to the transverse direction.
  • the common area of the areas that run perpendicular to the transverse direction can be at least twice as large as the common area of the areas that run perpendicular to the transverse direction.
  • the slide element can be designed as the first guide element and the slide element receptacle as the second guide element. In this way, a particularly small overall size can be achieved, and in addition a particularly uniform transmission of force from the slide element receptacle to the slide element via the side slide plates framing the central element can be ensured.
  • the side sliding plates differ in their extension length in a direction which is perpendicular to the sliding direction and perpendicular to the transverse direction, ie in the transverse transverse direction, by less than 0.01 mm, this extent being at least 10 mm.
  • Such a configuration of the side slide plates that is as identical as possible with regard to their extension length in the transverse transverse direction can ensure a particularly play-free guide device.
  • Such a high-precision Identical design of the side slide plates can be achieved by setting the stated extension lengths of the side slide plates in a single process step in which the side slide plates are simultaneously set to the desired extension length using exactly one tool, such as a milling machine.
  • the side slide plates each rest on the first guide element, the middle element and the second guide element, the middle element lying against the first guide element and the side slide plates and in particular against the second guide element.
  • the guiding property of the guiding device can be particularly advantageous via the contact ensured by the contact.
  • the central element is spaced apart from the second guide element. This embodiment is particularly easy to implement, since then the extension of the central element in the transverse transverse direction does not need to be set precisely to a very high degree.
  • the central element also rests against the second guide element. In this embodiment, a particularly reliable power transmission is ensured during the working stroke.
  • slide slide plates are provided on the slide element and driver slide plates are provided on the driver element, the slide slide plates and the driver slide plates forming a driver guide for linearly guiding the slide element along the driver element in a driver slide direction, the driver slide direction running in a plane that is perpendicular to the transverse direction, wherein the driver sliding direction forms an angle of at least 20 °, in particular between 30 ° and 120 °, with the sliding direction.
  • driver sliding direction runs in a plane that is perpendicular to the transverse direction, with the sliding direction in particular also lying in this plane.
  • the provision of a corresponding angle between the driver sliding direction and the sliding direction ensures the conversion of a vertical press force generated by a vertical press movement into a horizontal working movement.
  • the invention further relates to a method for manufacturing a wedge drive, wherein a thickness of the side slide plates, which defines the extension length of the side slide plates in a direction that is perpendicular to the sliding direction and perpendicular to the transverse direction when the side slide plates are installed in the wedge drive, simultaneously and is set together using a tool.
  • a thickness of the side slide plates which defines the extension length of the side slide plates in a direction that is perpendicular to the sliding direction and perpendicular to the transverse direction when the side slide plates are installed in the wedge drive, simultaneously and is set together using a tool.
  • the width of exactly one of the side sliding plates, which defines the extension length of this side sliding plate along the transverse direction, when this side sliding plate is installed in the wedge drive is set taking into account the distance between the steps of the second guide element in the transverse direction and the extension length of the central element and the other side slide plate in the transverse direction.
  • the wedge drive can be implemented in that finished components, in particular the slide element, slide element holder, the middle element and the other Side sliding plate, are measured in their dimensions in the transverse direction and then the width of the specific side sliding plate is specifically adapted to the dimensions. In this way, particularly good guidance along the transverse direction through the guide device can be ensured.
  • a wedge drive 1 according to the invention is shown schematically in various basic representations from different angles.
  • a wedge drive according to the invention comprises a slide element 2 which is arranged vertically between a slide element receptacle 3 and a driver element 4.
  • the slide element 2 is connected to the slide element receptacle 3 via a guide device, which in the present case comprises a slide plate formation consisting of three slide plates, namely a central slide plate 7 and two side slide plates 5, 6.
  • the slide element 2 is connected to the driver element 4 via a driver guide , which comprises slide slide plates 22, which are arranged on the side of slide element 2 facing towards driver element 4.
  • the slide element 2 is connected to the driver element 4 via a return stroke device 21, which ensures that the slide element 2 remains connected to the driver element 4 even during a return stroke in which the slide element receptacle 3 moves vertically away from the driver element 4.
  • FIG 1 the basic structure of a wedge drive 1 according to the invention can thus be clearly seen.
  • the driver element 4 is fastened to a base element of a press tool via fastening means, in the present case fastening screws 400.
  • the slide element receptacle 3 has in Figure 1 visible bushings through which they are means Fastening means, such as screws, can be fastened to a movable press element of the press tool.
  • the movable press element moves vertically during a working stroke relative to the floor element to which the driver element 4 is attached.
  • the movable press element moves towards the floor element, ie towards the driver element 4, while during a return stroke it moves vertically away from the floor element, ie away from the driver element 4.
  • the guide device between slide element 2 and slide element holder 3 ensures linear guidance of slide element 2 along slide element holder 3 along a sliding direction X which forms an angle of approximately 30 ° to the vertical direction.
  • the driver guide ensures a linear guidance of the slide element 2 along the driver element 4 along a driver sliding direction which forms an angle of approximately 80 ° to the vertical direction.
  • the direction of sliding of the driver and direction of sliding X form an angle of approx. 50 ° to one another.
  • the wedge drive 1 which consists of Figure 1
  • the result is that the slide element 2 executes a horizontal, linear working movement between the slide element holder 3 and driver element 4 when the slide element holder 3 is moved vertically towards the driver element 4.
  • the return stroke device 21 ensures that the slide element 2 performs a horizontal, linear return movement between the slide element holder 3 and the driver element 4 during a return stroke, ie when the slide element holder 3 is moved vertically away from the driver element 4, which negates the linear working movement during a working stroke represents.
  • the return stroke device 21 is fixedly fixed on the slide element 2 and engages behind corresponding sliding projections which are arranged on the driver element 4 so that the slide element 2 always remains connected to the driver element 4 during a return stroke.
  • the embodiment of a wedge drive 1 according to the invention shown in FIG. 1 further comprises a first support element 31 and a second support element 32, which are fixedly fixed to the slide element receptacle 3.
  • the second support element 32 limits the return movement of the slide element 2 during a return stroke, since the second support element 32 provides a stop for the center slide plate 7, which is fastened to the slide element 2.
  • the first support element 31 serves to support a return stroke spring, for example a gas pressure spring. Such a return spring is supported on the first support element 31 and is compressed during a working stroke and contributes to the fact that the slide element 2 moves back into its starting position during a return stroke, in which it rests against the second support element 32 with the central slide plate 7 attached to it .
  • the guide device comprises a sliding plate formation, which consists of the central sliding plate 7 and the two side sliding plates 5, 6.
  • the two side slide plates 5, 6 are attached to the slide element receptacle 3, which acts as a second guide element, whereas the middle slide plate 7 is attached to the slide element 2, which acts as a first guide element.
  • the central element 7 is thus formed by the central sliding plate 7 of the sliding plate formation.
  • the attachment of the middle slide plate 7 to the slide element 2 is particularly good from the synopsis of the Figures 2 and 4th recognizable.
  • the slide element 2 has a stepped surface profile which is formed by three fixing surfaces 71, 72, 73.
  • the first fixing surface 71 lies in the transverse direction between the second and third fixing surfaces 72, 73.
  • the first fixing surface 71 is spanned by a plane that is spanned by the transverse direction Y and the sliding direction X.
  • Second and third fixing surfaces 72, 73 are each spanned by the transverse transverse direction Z and by the sliding direction X and are also flat.
  • the central sliding plate has a surface profile corresponding to the stepped surface profile of the slide element 2 in that the central sliding plate 7 has a cross section perpendicular to the sliding direction X on its side facing the slide element 2, which represents the section of a rectangle.
  • the central sliding plate 7 can thus be inserted into the recess formed by the three fixing surfaces in the slide element 2.
  • the dimensions in the transverse direction of the central slide plate 7 are provided in such a way that it rests over the entire surface on all three fixing surfaces.
  • the central slide plate 7 is connected to the slide element 2 via screws, which run through passages in the central slide plate 7, which are shown in FIG Figure 2 are shown. A corresponding screw is in Figure 4 indicated.
  • the central slide plate 7 is pressed against the first fixing surface 71 of the slide element 2 via these screws 700.
  • the attachment of the side slide plates 5, 6 to the slide element receptacle 3 is particularly good from the synopsis Figures 3 and 4th refer to.
  • the slide element receptacle 3 has two steps spaced apart from one another in the transverse direction Y, each of the side slide plates 5, 6 bearing against one of the two steps.
  • each of the side slide plates 5, 6 lies against the slide element receptacle 3 with a first contact surface 51, 61, a second contact surface 52, 62 and a third contact surface 53, 63.
  • the second contact surface 52, 62 of the side slide plates 5, 6 is each spanned by a plane that is spanned by the sliding direction X and the transverse transverse direction Z, and lies against the surface of the slide element receptacle 3 that forms the height offset of the respective step.
  • the side sliding plates 5, 6 are each pressed by a screw 500, 600 with their first contact surface 51, 61 and their third contact surface 53, 63 against the slide element receptacle.
  • the individual elements of the embodiment of the wedge drive 1 according to the invention are, in particular, from Figure 4 can be seen, matched to one another in such a way that the central slide plate 7 rests directly on the slide contact surfaces 55, 65 of the side slide plates 5, 6 which frame them in the transverse direction.
  • the middle slide plate 7 slides along the sliding contact surfaces 55, 65 of the two side slide plates 5, 6.
  • the middle slide plate 7 with its two opposite sides in the transverse direction rests on the two side slide plates 5, 6 and also the side slide plates in each case have a sliding contact surface 55, 65 on one side in the transverse direction and a second contact surface 52, 62 on its opposite side in the transverse direction, the central sliding plate 7 is thus firmly guided between the side sliding plates 5, 6 without the central sliding plate 7 moving in the transverse direction Y can move appreciably relative to the slide element receptacle 3.
  • the described embodiment according to the invention thus ensures linear guidance of the slide element 2 along the slide direction X on the slide element receptacle 3 without that the slide element 2 executes a movement relative to the slide element receptacle 3 along the transverse direction Y.
  • the return stroke portion 74 has two holding portions that each extend in the transverse direction over a section along the two side sliding plates 5, 6, wherein they are arranged in this section along the transverse direction with respect to the transverse transverse direction Z between the slide element receptacle 3 and the respective side sliding plates 5, 6.
  • the side slide plates 5, 6 thus each rest with a return stroke abutment surface 54, 64 on a holding section of the return stroke section of the center slide plate 7.
  • FIG 5 the cross section perpendicular to the sliding direction X of a further embodiment of a wedge drive 1 according to the invention is shown schematically.
  • the central element 7 is formed in one piece with the slide element 2, ie the slide element 2 and the central element 7 are formed as an integrally manufactured component, in the present case as a cast metal body.
  • This power transmission takes place via the first contact surfaces 51, 61 from the slide element receptacle to the side slide plates 5, 6 and then from the side slide plates 5, 6 to the slide element 2 via two slide contact surfaces which run parallel to the first contact surfaces 51, 61 and with reference to the transverse transverse direction Z are arranged on the ends of the side sliding plates 5, 6 opposite the first contact surfaces 51, 61.
  • a force along the transverse transverse direction Y which is problematic for the linearity of the guide between the slide element 2 and the slide element receptacle 3 is generated by the guide device of the exemplary embodiment according to FIG Figure 5 added in that the side slide plates 5, 6 guide the middle element 7 via their sliding contact surfaces 55, 65 and are themselves positioned on the steps of the slide element holder 3 in the transversal transverse direction Y to the slide element holder 3 via their second contact surfaces 52, 62.
  • a return stroke section 74 designed as a separate component is also provided.
  • This return stroke section 74 is firmly fixed to the central element 7 by means of screws 700 and has two holding sections which each run over a section along the transverse transverse direction Y along one of the two side slide plates 5, 6.
  • it is ensured by the arrangement of the return stroke section 74 on the central element 7 with its position relative to the side slide plates 5, 6 that when a stroke occurs after a working stroke Return stroke the slide element 2 is forced back into its starting position before the execution of the working stroke, in which, in an embodiment not shown, the middle element 7 rests on the second support element 32 as explained above.
  • the return stroke section 74 is designed as a separate slide plate, the surface of which is designed such that a very small frictional force is present during the return stroke, in which the return stroke section 74 slides along the side slide plates 5, 6 in sections.
  • the return stroke section 74 is designed as a sliding plate made of bronze.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bearings For Parts Moving Linearly (AREA)
  • Machine Tool Units (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
  • Presses And Accessory Devices Thereof (AREA)
  • Linear Motors (AREA)
  • Toys (AREA)
EP16819086.6A 2015-12-21 2016-12-21 Keiltrieb Active EP3393693B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202015106966.9U DE202015106966U1 (de) 2015-12-21 2015-12-21 Keiltrieb
PCT/EP2016/082204 WO2017108968A1 (de) 2015-12-21 2016-12-21 Keiltrieb

Publications (2)

Publication Number Publication Date
EP3393693A1 EP3393693A1 (de) 2018-10-31
EP3393693B1 true EP3393693B1 (de) 2020-10-14

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US (1) US20180369893A1 (ko)
EP (1) EP3393693B1 (ko)
KR (1) KR102142201B1 (ko)
CN (1) CN108430664B (ko)
BR (1) BR112018012375A2 (ko)
DE (1) DE202015106966U1 (ko)
ES (1) ES2841575T3 (ko)
MX (1) MX2018007665A (ko)
WO (1) WO2017108968A1 (ko)

Cited By (1)

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DE102022108067B3 (de) 2022-04-05 2023-04-27 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Werkzeugschieber und Verfahren zum Montieren und/oder Demontieren

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DE202015106966U1 (de) 2015-12-21 2016-01-28 Harald Weigelt Keiltrieb
DE202017100989U1 (de) 2017-02-22 2017-04-21 Fibro Gmbh Keiltrieb mit optimierter Führung
CN111389951B (zh) * 2020-03-26 2020-12-25 燕山大学 一种管材滚胀成形液压机
DE202021101852U1 (de) * 2021-04-07 2021-04-30 Fibro Gmbh Keiltrieb mit einstellbarer Arbeits- und Montagestellung
DE202023101869U1 (de) 2023-04-13 2023-06-22 F I B R O Gmbh Keiltrieb mit optimierter Anordnung der Gleitflächen

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JP2017507036A (ja) 2014-03-06 2017-03-16 フェストアルピネ・ギーセライ・リンツ・ゲー・エム・ベー・ハー 工具スライド
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Also Published As

Publication number Publication date
BR112018012375A2 (pt) 2018-12-04
CN108430664A (zh) 2018-08-21
EP3393693A1 (de) 2018-10-31
ES2841575T3 (es) 2021-07-08
WO2017108968A1 (de) 2017-06-29
DE202015106966U1 (de) 2016-01-28
KR102142201B1 (ko) 2020-08-06
CN108430664B (zh) 2020-12-29
US20180369893A1 (en) 2018-12-27
MX2018007665A (es) 2019-07-04
KR20180097617A (ko) 2018-08-31

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