Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
  • B21J13/00—Details of machines for forging, pressing, or hammering
  • B21J13/02—Dies or mountings therefor
• • 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
  • B21D37/00—Tools as parts of machines covered by this subclass
  • B21D37/20—Making tools by operations not covered by a single other subclass
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
  • B21K1/00—Making machine elements
  • B21K1/44—Making machine elements bolts, studs, or the like
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
  • B21K1/00—Making machine elements
  • B21K1/56—Making machine elements screw-threaded elements
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
  • B21K5/00—Making tools or tool parts, e.g. pliers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
  • B23P11/00—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for 
  • B23P11/02—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for  by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits
  • B23P11/025—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for  by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits by using heat or cold
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
  • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
  • B23P15/24—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass dies

Definitions

• the invention relates to a die module and a pressing tool system, in particular for the production of essentially rotationally symmetrical parts by forming.
• Die modules for pressing tools are already known from the prior art. These matrix modules mostly consist of a core and several reinforcement rings, which enclose the core and absorb the forces acting on the core, at least in part. With the existing number of reinforcement rings, the prestressing force that can be achieved by the matrix module on the core increases, so that several reinforcement rings are used in the case of high loads. It is known in the prior art to secure the reinforcement rings and the core against displacement in the direction of the pressing force by means of a non-positive connection. However, such non-positive connections allow a relatively small transmission of force between the core and the nearest reinforcement ring and/or between radially adjacent reinforcement rings. Therefore, only a relatively small forming force can be applied in the die modules that are already known.
• a modular forming tool in particular a pressing tool, is provided, preferably for the production of a substantially rotationally symmetrical part, the modular forming tool comprising at least one primary tool, in particular a core, and at least one reinforcing tube, the forming tool extending along a longitudinal direction, the primary tool having a Has a workpiece machining surface, a lateral surface and two end faces, the workpiece machining surface being in contact with a workpiece or being designed to be in contact with a workpiece, the lateral surface delimiting the primary tool in a radial direction, the end faces delimiting the primary tool in the longitudinal direction, the lateral surface of the primary tool is at least partially, preferably predominantly, conical in shape, the reinforcing tube having an inner lateral surface and an outer lateral surface, the inner lateral surface che is at least partially, preferably predominantly, particularly preferably completely, conical, and wherein the inner lateral surface contacts with the lateral surface.
• the modular forming tool is in particular a pressing tool and/or a component part of a pressing tool.
• the modular forming tool basically serves to be used in a forming manufacturing step or in a forming manufacturing process.
• the modular forming tool preferably serves to produce essentially rotationally symmetrical parts, such as bolts and/or screws and/or eccentric screws.
• essentially rotationally symmetrical parts are in particular those parts which are preferably at least partially rotationally symmetrical about an axis, although these parts can have spiral-like outer contours, such as a thread, or tool engagement contours which destroy or impair the perfect rotational symmetry of these parts. allowed to break through.
• bolts, eccentric bolts or screws are essentially rotationally symmetrical parts within the meaning of the invention.
• the modular forming tool can be used to form a workpiece in such a way that an essentially rotationally symmetrical part, such as a bolt or a screw, is created from a blank.
• the modular forming tool consists of a number of different modules or components, with the modular forming tool comprising at least one primary tool and at least one reinforcement tube, preferably a large number of reinforcement tubes.
• the modular forming tool can also include auxiliary tools.
• the modular forming tool extends along a longitudinal direction. The longitudinal extension direction of the forming tool is in particular that direction in which the length of the modular forming tool is determined and/or around which the forming tool is constructed.
• the forming tool and/or the reinforcing tubes and/or the auxiliary tools and/or the primary tools can be arranged in an assembled state in such a way that they surround or enclose the direction of longitudinal extent.
• the direction of longitudinal extent can also be the direction in which the workpiece mainly extends and/or in which the forming tool moves when forming the workpiece.
• the purpose of the primary tool of the modular forming tool is to contact the workpiece processing surface of the primary tool with a workpiece in such a way that the workpiece is formed by this contact.
• the workpiece machining surface is a surface of the primary tool which makes contact or can make contact with the workpiece in order to deform it.
• the primary tool is designed as a core, preferably made of hard metal.
• a core can be understood to mean that the primary tool is designed in such a way that, viewed in the radial direction, it at least partially forms an inner core of the modular forming tool, which is preferably hollow (e.g. tubular).
• the primary tool is therefore designed in such a way that the workpiece machining surfaces and/or the workpiece machining surface of the primary tool limit or delimit the primary tool inward in the radial direction.
• the primary tool also has a lateral surface and two end faces. The lateral surface delimits the primary tool in the radial direction, in particular outwards.
• this can mean that the lateral surface forms the part of the respective primary tool that points outwards in the radial direction.
• the radial direction advantageously extends perpendicularly to the direction of longitudinal extension.
• this can mean that the radial direction points radially away from the direction of longitudinal extension.
• the outer surface of the primary tool is at least partially conical.
• a partially conical design can be understood to mean that at least part of the relevant surface, here the lateral surface, corresponds to a surface of revolution about an axis, in particular about the direction of longitudinal extension.
• the conical surface is a surface whose shape corresponds to the geometry that results from a rotation of a curve with a slope, which is at least partially non-zero in relation to the axis of rotation, about a (rotational) axis results, in particular the axis or axis of rotation is the direction of longitudinal extension.
• the conical portion of the lateral surface preferably the entire lateral surface, is designed in such a way that it is monotonic, in particular strictly monotonic, conical in the direction of longitudinal extension, in particular in the positive direction of longitudinal extension.
• a monotonic conical surface is to be understood as meaning a conical surface which has a monotonically increasing distance from this (rotational) axis along its axis, around which the surface is designed to be rotationally symmetrical.
• the conical surface can therefore be monotonic, in particular strictly monotonic, increasing along the longitudinal extension direction in a section plane which is spanned in particular by the longitudinal extension direction and the radial direction. This allows a particularly simple joining of the conical surfaces before can be achieved with a contacting component, especially in the case of cold joining without heating up the and/or one of the components to be joined.
• the lateral surface is therefore preferably formed at least essentially rotationally symmetrically to or about the direction of longitudinal extent and advantageously also has an increasing distance from the direction of longitudinal extent in the direction of longitudinal extent.
• the lateral surface is preferably of essentially completely conical design, which can also be referred to as predominantly conical.
• An essentially completely conical design is to be understood here as meaning that more than 80%, preferably more than 90% and particularly preferably more than 95% of the relevant surface is designed conically. In this way, a form-fitting support that is particularly mechanically resilient can be achieved.
• the conical surface of the lateral surface is designed to make contact with an inner lateral surface of a reinforcing tube in a mounted state, in order in this way to transmit forces between the primary tool and the reinforcing tube in the direction of the longitudinal extent.
• the primary tool is delimited by the end faces.
• the end faces are in particular designed in such a way that they have a normal which is essentially parallel to the direction of longitudinal extent.
• the end faces of the primary tool are of essentially planar design, with this plane, in which the respective end face lies, having a normal which is essentially parallel to the direction of longitudinal extension.
• the modular forming tool expediently has a large number of primary tools, in particular 2, 3 or 4 primary tools, which can advantageously have all of the features described above and described below.
• these primary tools are designed or arranged within the modular forming tool in such a way that they each have an end face that directly contacts an end face of another primary tool. In other words, this can mean that the primary tools can be arranged next to one another or one behind the other in the direction of longitudinal extension such that they contact one another directly.
• the modular forming tool also includes at least one reinforcement tube.
• the reinforcement tube has an inner lateral surface and an outer lateral surface.
• the inner lateral surface delimits the reinforcing tube on the inside in the radial direction and the outer lateral surface delimits the reinforcing tube on the outside in the radial direction.
• the inner lateral surface and/or the outer lateral surface of the reinforcement tube preferably of all reinforcement tubes, is/are formed at least essentially rotationally symmetrically to or about the direction of longitudinal extension.
• the reinforcement tubes are in particular arranged in such a way that they in particular contact and at least partially surround a primary tool and/or a further reinforcement tube with their inner lateral surface.
• the outer jacket surfaces of the reinforcing tube(s) serve to support the reinforcing tube in relation to the surrounding reinforcing tubes and/or receptacles.
• the reinforcement tubes can therefore, in particular in an assembled state, be arranged relative to the primary tool(s) and/or relative to other reinforcement tubes like onion rings in an onion.
• the reinforcing tube(s) is/are therefore designed to be closed, in particular in the circumferential direction, in order to achieve a high load-bearing capacity of the reinforcing tube.
• a “closed” design means that the outer lateral surface is not connected to the inner lateral surface by, for example, recesses such as slots or bores.
• the modular Forming tool limited to the outside by a recording, which is used in particular to be arranged in a tool holder or in a machine tool supporting.
• the receptacle therefore advantageously delimits the modular forming tool in the radial direction.
• the at least one reinforcement tube preferably all reinforcement tubes, has an at least partially conical inner lateral surface.
• This at least partially conical inner lateral surface serves to positively, and advantageously at the same time non-positively, prevent displacement of the component directly surrounded in the radial direction and—in a mounted state—contacting component against relative displacement in the direction of longitudinal extension. Therefore, the components that make contact with the conical inner lateral surface are advantageously designed in this contacting area to be complementary to the inner lateral surface and are therefore also at least conical in this area in order to achieve positive locking in position. According to the invention, it is therefore at least provided that the conical part of the inner lateral surface of the reinforcing tube makes contact with the lateral surface, in particular the conical part of the lateral surface, of the primary tool.
• any reinforcement tube of the forming tool is designed in such a way that they each have essentially completely conical inner lateral surfaces and/or outer lateral surfaces. In this way it can be achieved that a relative displacement between the reinforcement tubes and the components (primary tools and/or reinforcement tubes) immediately surrounded by them is prevented in a form-fitting manner.
• the components that are directly surrounded by a reinforcing tube and, in an assembled state, contact the inner lateral surface of the reinforcing tube, in particular further reinforcing tubes and/or primary tools, with regard to the contacting surfaces, in particular the outer lateral surface of the reinforcing tube and/or the lateral surface of the primary tool, are designed to be complementary to the inner lateral surface of the surrounding and contacting reinforcement tube.
• the at least one, preferably all, reinforcement tubes are designed in such a way that, in a mounted state, they form a press fit with the directly surrounding component, in particular a further reinforcement tube or a primary tool.
• the modular forming tool can be designed in such a way that in one direction a positive and non-positive displacement lock between the reinforcement tube and the component surrounded by the reinforcement tube is ensured, and in the other direction of the longitudinal direction only a non-positive displacement lock in the longitudinal direction results.
• the modular forming tool comprises a multiplicity of reinforcement tubes, the inner lateral surfaces of the majority of, in particular all, the reinforcement tubes being expediently at least partially, preferably predominantly, of conical design.
• the large number of reinforcing tubes can absorb a high degree of forces in the circumferential direction.
• the circumferential direction is in particular that direction which is formed circumferentially around the direction of longitudinal extent.
• the direction of longitudinal extent, the radial direction and the circumferential direction form in particular a cylindrical coordinate system with one another.
• the modular forming tool expediently has an outer receptacle, the receptacle having an inner contact surface, with at least one reinforcement tube preferably contacting the inner contact surface with its outer lateral surface, the inner contact surface being in particular at least partially, preferably predominantly, conical.
• the recording is particularly that component of the modular forming tool which delimits it outwards in the radial direction.
• the receptacle is designed in such a way that it is delimited on the outside in the radial direction by only cylindrical surfaces in order to achieve a configuration that is as cost-effective as possible.
• the receptacle can have a shoulder, this shoulder being formed in particular in an end region viewed in the direction of longitudinal extension.
• a stop surface can be formed in the direction of longitudinal extent by the step, in order to achieve positive locking of the receptacle against displacement in the direction of longitudinal extent.
• the inner contact surface of the receptacle serves to make direct contact with a reinforcing tube.
• the inner contact surface is in particular at least partially, preferably predominantly, conical. In this way, a form-fitting support of the reinforcement tubes or the reinforcement tube relative to the receptacle can be achieved in a particularly compact design.
• the inner contact surface is complementary to the directly surrounded and contacting outer jacket surface of the outer reinforcement tube.
• At least one reinforcement tube is designed in such a way that it has/have a conical outer lateral surface.
• the reinforcement tubes can not only absorb or transmit a force in a form-fitting manner, but can also ensure or provide a form-fitting—and therefore reliable—force transmission to the exposed contact partner or the directly surrounding contact partner.
• the reinforcing tubes of the forming tool can not only have a conical inner lateral surface, but also a conical outer lateral surface. Therefore, at least one reinforcement tube, preferably all reinforcement tubes, of the forming tool can be delimited in the radial direction inwards and in the radial direction outwards (away from the direction of longitudinal extension) by conical surfaces.
• the reinforcement tubes have a conical outer surface have, the outer lateral surface is essentially completely conical.
• the conical surfaces of the inner lateral surfaces and the outer lateral surfaces of the armoring tubes, which have a conical outer and inner lateral surface are conical in the longitudinal extension direction.
• a “concurrently conical” configuration can be understood to mean that the conically configured surfaces of the reinforcement tube each have the same sign in their pitch relative to the longitudinal direction, viewed in the direction of longitudinal extension.
• this can mean that a “co-conical” is given in particular when both the outer and the inner lateral surface are increasingly spaced apart from the direction of longitudinal extent in the positive direction of longitudinal extent.
• the "concurrently conical” design can ensure that the positive locking of the reinforcement tube is achieved both by the outer lateral surface and by the inner lateral surface in the same longitudinal direction (+/-).
• the reinforcement tubes or at least one of the reinforcement tubes—each have a constant wall thickness.
• the relevant wall thickness is the average wall thickness which the reinforcement tube has in a cross section perpendicular to the direction of longitudinal extension.
• the wall thickness of the reinforcement tubes or of the reinforcement tube does not change along the direction of longitudinal extension.
• the reinforcing tubes can have different wall thicknesses in relation to one another.
• the forming tool expediently has at least two reinforcement tubes, with the at least two reinforcement tubes advantageously being designed in such a way that one reinforcement tube surrounds the other reinforcement tube, in particular directly, with the maximum inner diameter of the inner jacket surface Before the surrounded reinforcement tube, at least essentially, corresponds to the minimum inner diameter of the inner lateral surface of the nearest surrounding or immediately surrounding reinforcement tube.
• the maximum inner diameter of the inner lateral surface is the largest diameter which the inner lateral surface has along the direction of longitudinal extent to itself.
• the minimum inner diameter of the inner lateral surface is, however, the smallest available diameter which the inner lateral surface has at its minimum along the direction of longitudinal extension. “Substantially correspond” can be understood to mean that the diameters have a deviation of at most 5%, preferably at most 2% and particularly preferably at most 1% and particularly strongly preferably at most 0.5%.
• the conical inner lateral surface of the reinforcement tube in particular of all reinforcement tubes, forms a cone angle with the direction of longitudinal extent, the cone angle being in particular in a range from 0.5° to 8°, preferably in a range from 1° to 5° and particularly preferably in a range from 2° to 4°.
• the conical portion of the inner lateral surface of the reinforcement tube is therefore advantageously formed by the "imaginary" rotation of a straight line around the direction of longitudinal extent, with the straight line having a constant gradient in the direction of longitudinal extent. Due to this, in particular constant, cone angle of the inner lateral surface, a particularly simple manufacture, in particular by turning, of the conical inner lateral surface of the reinforcing tube can be achieved.
• all the conical inner lateral surfaces of all the reinforcement tubes of the modular forming tool are designed in such a way that they form an, in particular constant, cone angle with the direction of longitudinal extension.
• the cone angle should be in a range of 0.5°-8° lie. With a cone angle in the range of 1°-5°, a particularly good compromise can be achieved between the force required for the joint and the possible force which the reinforcement tube can transmit in a form-fitting manner in the longitudinal direction with its contacting partner via the inner lateral surface.
• the applicant has found that with a cone angle in the range of 2°-4°, a particularly good joinability of the reinforcement tube can be achieved with a cold joint (or cold joint), therefore the joint can be facilitated without heating up or cooling down the reinforcement tube .
• the cone angle of the inner lateral surface can also be referred to as the first cone angle or as the inner cone angle.
• the conical outer lateral surfaces of the reinforcement tube(s) form a second, in particular constant, cone angle with the direction of longitudinal extension, the second cone angle being in particular in a range of 0.5° - 8°, preferably in a range of 1° - 5° and particularly preferably in a range of 2° - 4°.
• the second cone angle can also be referred to as the outer cone angle.
• the (first) cone angle of all reinforcement tubes and/or the second cone angle of all reinforcement tubes is expediently the same. A particularly simple and cost-effective production can be achieved as a result.
• the ratio of the average wall thickness of the reinforcement tubes to the first and/or the second cone angle is expediently in a range of 0.2-6 mm/°, preferably in a range of 0.3-5 mm/° and particularly preferably in one Range of 0.4 - 4mm/°.
• the wall thickness that is decisive for this is in particular the wall thickness of the respective reinforcement tube averaged in the direction of longitudinal extension.
• the ratio of the average wall thickness of the reinforcement tube to the first and/or the second cone angle should be in a range of 0.3 - 5 mm/°. In order to ensure a sufficiently secure press connection even with cold joining, the ratio should be in a range of 0.4 - 4 mm/°.
• the ratio of the first and/or the second cone angle to the minimum length of a reinforcement tube in the direction of length is preferably in a range of 0.003-0.87 mm, preferably in a range of 0.005-0.47 mm and particularly preferably in a range from 0.001 - 0.27mm.
• the reinforcement tube should have at least a certain degree of longitudinal extent compared to the first and/or the second cone angle. At the same time, however, an excessive extent in the direction of longitudinal extent should be avoided at certain first and/or second cone angles in order to simultaneously ensure a certain manageability of the reinforcing tube, in particular during assembly.
• the ratio of the first and/or the second cone angle to the minimum length in the longitudinal direction of the relevant reinforcement tube should be in a range of 0.003 - 0.87 mm.
• the ratio of the relevant reinforcement tube should be in a range of 0.005 - 0.47mm.
• the ratio should be in a range of 0.001 - 0.27mm.
• the ratio of the minimum inner diameter of the inner lateral surface of a reinforcement tube, in particular of all reinforcement tubes, to the wall thickness of the respective reinforcement tube is in a range of 3 - 20. preferably in a range of 5-15, and particularly preferably in a range of 6-10.
• a ratio in the range of 3-20 bursting of the reinforcing tube during the joining process can be effectively avoided and/or its probability greatly increased be limited.
• a ratio in the range of 5-15 the applicant has surprisingly found that a particularly simple production of the reinforcing tube can be achieved in this way.
• a ratio of the minimum inner diameter of the lateral surface of the relevant reinforcement tube to the wall thickness of the relevant reinforcement tube in a range of 6-10, particularly good joinability of the reinforcement tube with its surrounding component can be achieved.
• the modular forming tool advantageously comprises at least two reinforcement tubes, preferably a large number of reinforcement tubes, with at least one reinforcement tube, preferably all reinforcement tubes, of the forming tool being designed in such a way that the surrounding reinforcement tubes have a wall thickness which is greater than and/or equal to that, at least directly surrounded reinforcement tube is / are.
• the increase in peripheral forces with increasing distance—in the radial direction—to the direction of longitudinal extent can be taken into account.
• This type of configuration can therefore prevent the reinforcement tube from bursting open during joining, in particular during cold joining.
• the ratio of the average wall thickness of the immediately surrounding reinforcement tube to the average wall thickness of the surrounded reinforcement tube is in a range of 1.2 - 1.6, because the applicant has surprisingly found that such a design leads to a cost-effective and mechanically resilient design of the modular Forming tool leads.
• This ratio can be present in relation to all the reinforcing tubes that are in contact--with the directly surrounding or surrounding reinforcing tube--and/or only with regard to two, three or four contact pairs of reinforcing tubes.
• the inner lateral surface and/or the outer lateral surface of one, preferably all, reinforcement tube(s) has a roughness of Rz in the range of 3 ⁇ m-20 ⁇ m, preferably in a range of 4 ⁇ m-12 ⁇ m and particularly preferably of 6 ⁇ m-10 ⁇ m.
• the decisive factor for the assessment of the roughness is in particular the condition of the reinforcement tube which it has before it is installed in the modular forming tool. In other words, in particular that roughness is decisive which the inner lateral surface and/or the outer lateral surface has before contact with a further component, in particular a further reinforcement tube of the modular forming tool.
• a particularly good compromise between joinability and manufacturing costs can be achieved with a roughness of Rz in the range of 3 - 20 pm. If the roughness value of Rz is in the range of 4 - 12 pm, this can avoid or reduce settlement phenomena, so that only a small loss of preload force results. With a roughness value of Rz in the range of 6-10 ⁇ m, the reinforcement tube can be produced in a particularly simple and cost-effective manner, resulting in a particularly cost-effective modular forming tool.
• the inner lateral surface and/or the outer lateral surface of one, preferably all, reinforcing pipes in an assembled state has a roughness of Rz in the range of 1.5 ⁇ m-18 ⁇ m, preferably in a range of 3 ⁇ m-10 ⁇ m, and particularly preferably from 4 pm - 8 pm.
• a roughness value is in particular the roughness value that results on the relevant surface after assembly with a component that makes contact with the surface, in particular a further reinforcement tube, a primary tool and/or a receptacle. Due to the fact that the assembled state is decisive, the roughness values are slightly lower than the values presented above, which apply in particular to a non-assembled state.
• a further aspect of the invention can relate to a modular forming tool set, in particular for creating a modular forming tool as described above and in more detail, the modular forming tool set comprising two different primary tools and at least one reinforcement tube, the reinforcement tube having a conical inner lateral surface and a conical outer lateral surface, wherein the primary tools have a workpiece machining surface, a conical lateral surface and two end faces, the conical lateral surface of one primary tool corresponding to the conical inner lateral surface of the reinforcing tube, and the conical lateral surface of the other primary tool corresponding to the conical outer lateral surface of the reinforcing tube.
• the modular forming tool set makes it easy to create a modular forming tool, with the one modular forming tool having only one primary tool, which has a conical lateral surface that corresponds to the conical outer lateral surface of the reinforcing tube. With this composition of the forming tool by the forming tool set, the reinforcement tube and the other primary tool would therefore not be present in the forming tool.
• the modular forming tool includes the other primary tool and also at least the reinforcing tube.
• the modular forming tool set can be assembled in a simple manner by the configuration presented to form a configuration with one primary tool or a configuration with one reinforcing tube and the other primary tool.
• a further aspect of the invention can relate to a pressing tool system with a first pressing tool and a second pressing tool, wherein the first and/or the second pressing tool can be a modular forming tool, in particular as described above and below, wherein the first pressing tool is a punch and/or or wherein the second pressing tool is a die.
• the first pressing tool and/or the second pressing tool can be and/or comprise a modular forming tool as described above and below, so that the advantages already explained with regard to the modular forming tool can also be achieved in a pressing tool.
• a further aspect of the invention can relate to a method for producing a modular forming tool, in particular a modular forming tool as described above and below, advantageously comprising the steps of: providing a primary tool; - Providing a reinforcement tube; - In particular applications of a lubricant on the reinforcement tube and / or the primary tool; - Cold and/or hot pressing of the primary tool into the reinforcement tube.
• a modular forming tool can be created in a simple manner by the manufacturing method presented here. The application of the lubricant takes place in particular on those surfaces of the reinforcing tube and/or the primary tool which are in contact with other components in an assembled state.
• the method for producing a modular forming tool also includes the steps that additional reinforcement tubes are provided, the reinforcement tubes advantageously being pressed into the modular forming tool cold and/or hot such that either a primary tool and/or a further reinforcement tube directly contact and/or surround the inner lateral surface of the reinforcement tubes.
• Cold (in) pressing means in particular that the components to be joined, in particular the primary tool and the reinforcement tube and/or the two reinforcement tubes to be joined, are not thermally treated before joining, in particular not heated and/or cooled in particular not by more than 45 Kelvin.
• the inner component in the case of cold pressing (in) the inner component is not cooled down before joining and/or the outer component to be joined is not heated.
• hot (insertion) pressing it is intended in particular to heat the surrounding component before pressing in, in particular by at least 45 Kelvin, and/or to cool the surrounded component, in particular the primary tool and/or the reinforcement tube, in order to to reduce its extent, in particular in the radial direction.
• the advantage of cold pressing is that this can be done particularly cheaply.
• the probability of the surrounding component bursting open is also reduced in the case of cold press-fitting or cold joining.
• the advantage can be achieved that particularly high peripheral forces can be achieved in the interference fit, which is advantageous in particular with regard to the deformability or deformability of the joined component.
• FIG. 1 shows a section through a forming tool
• Figure 2 is a view of a forming tool with a section
• FIG. 3 shows a view of a forming tool in the longitudinal direction.
• a forming tool 1 is shown in FIG.
• the forming tool 1 extends in the direction of longitudinal extent L, with the radial direction R pointing radially away from this direction of longitudinal extent L.
• the primary tool 10, which is a core in the illustrated embodiment, has a workpiece machining surface 12, which delimits the primary tool 10 in the radial direction R inward.
• the primary tool 10 is delimited by the end faces 16 which, in particular, have a normal parallel to the direction of longitudinal extent L.
• the primary tool 10 is delimited outwards in the radial direction R by the lateral surface 14 .
• the outer surface 14 is completely conical in the example shown.
• the reinforcement tube 30 immediately surrounding it in the radial direction R is in direct contact with the conical lateral surface 14 of the primary tool 10 , the inner lateral surface 32 of this reinforcing tube 30 directly contacting the lateral surface 14 of the primary tool 10 .
• the inner lateral surface 32 of this reinforcement tube 30 is also completely conical and has a cone angle W1 with the direction L of the longitudinal extent.
• the reinforcement tube 30 is delimited radially outwards in the radial direction R by its outer lateral surface 34 , which is likewise of completely conical design.
• the reinforcing tubes 30 of the forming tool 1 shown in FIG. 1 each have a conical inner lateral surface 32 and a conical outer lateral surface 34 .
• the reinforcement tubes 30 also each have a constant wall thickness W, with all reinforcement tubes 30 also having or forming the same cone angle W1 with the longitudinal direction L with their inner lateral surfaces 32 and outer lateral surfaces 34 .
• FIG. 2 An external view of a modular forming tool 1 is shown in FIG.
• the embodiment shown in FIG. 2 can be combined with that shown in FIG Embodiment to be appropriate.
• the embodiment shown in FIG. 2 can be a different view from the embodiment shown in FIG.
• the modular forming tool 1 is delimited outwards in the radial direction R by the outer receptacle 60 .
• Reinforcement tubes 30 are arranged on the inside in the radial direction R, similar to onion rings, with the reinforcement tube 30 lying furthest on the inside in the radial direction R accommodating or immediately surrounding the primary tool 10 .
• the reinforcing tubes 30 each have conical inner lateral surfaces 32 and conical outer lateral surfaces 34 in order to prevent a positive displacement of the components relative to one another in the longitudinal direction L, in particular in the negative longitudinal direction L.
• the primary tool 10 also has a conical outer surface 14 in order to prevent a form-fit displacement of the primary tool 10 with respect to the immediately surrounding reinforcement tube 30 .
• FIG. 3 A view of a forming tool 1 in the longitudinal direction L is shown in FIG.
• the embodiment shown in FIG. 3 can in principle represent a different view from the embodiments already shown in FIG. 1 and/or from the embodiment shown in FIG.
• the primary tool 10 is surrounded by all of the reinforcement tubes 30 , with the reinforcement tubes 30 in turn being surrounded by the receptacle 60 .
• the reinforcing tubes 30 each have a wall thickness W.
• the reinforcing tubes 30 also each have a conical outer surface 34 and a conical inner surface 32.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Shaping Metal By Deep-Drawing, Or The Like (AREA)
• Mounting, Exchange, And Manufacturing Of Dies (AREA)
• Shaping Of Tube Ends By Bending Or Straightening (AREA)
• Forging (AREA)
• Metal Extraction Processes (AREA)

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Publications (1)

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Family Applications (1)

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• 2020
  • 2020-11-13 DE DE102020129954.0A patent/DE102020129954B3/de active Active
• 2021
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