EP4302372A1 - Outil de coupe - Google Patents

Outil de coupe

Info

Publication number
EP4302372A1
EP4302372A1 EP22711519.3A EP22711519A EP4302372A1 EP 4302372 A1 EP4302372 A1 EP 4302372A1 EP 22711519 A EP22711519 A EP 22711519A EP 4302372 A1 EP4302372 A1 EP 4302372A1
Authority
EP
European Patent Office
Prior art keywords
cutting
force
plane
line
counter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP22711519.3A
Other languages
German (de)
English (en)
Inventor
Egbert Frenken
Andreas Lehr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gustav Klauke GmbH
Original Assignee
Gustav Klauke GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gustav Klauke GmbH filed Critical Gustav Klauke GmbH
Publication of EP4302372A1 publication Critical patent/EP4302372A1/fr
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D35/00—Tools for shearing machines or shearing devices; Holders or chucks for shearing tools
    • B23D35/002—Means for mounting the cutting members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/04—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
    • B26D1/06—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
    • H02G1/005—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for cutting cables or wires, or splicing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D35/00—Tools for shearing machines or shearing devices; Holders or chucks for shearing tools
    • B23D35/001—Tools for shearing machines or shearing devices; Holders or chucks for shearing tools cutting members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D7/2614—Means for mounting the cutting member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D29/00—Hand-held metal-shearing or metal-cutting devices
    • B23D29/002—Hand-held metal-shearing or metal-cutting devices for cutting wire or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members therefor
    • B26D2001/0066—Cutting members therefor having shearing means, e.g. shearing blades, abutting blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D2007/2685—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member flexible mounting means

Definitions

  • the invention relates to a cutting tool with a tool body having two cutting jaws that can be displaced relative to one another, a first cutting jaw having a first assembly level on which a first cutting edge part having a first cutting edge is supported, a second cutting jaw having a second assembly level on which a second cutting edge part having a second cutting edge is supported, with a cutting plane along which the cutting edge parts are movable being essentially parallel to the first and second mounting planes, further wherein the cutting edge of the respective cutting edge part or the respective cutting part as a whole is transverse to of the assigned assembly plane, wherein the blade part has a contact surface for a driving force that runs essentially orthogonally to the cutting plane and there are assembly contact areas in the assembly planes, in which a G A counter-retaining force acts on the counter-support surface of the cutting edge part or the cutting edge on a side of the cutting edge part or the cutting edge facing away from the cutting plane, with a resultant force corresponding to the driving force forming a first line of force and a resultant force
  • Such cutting tools are well known in the prior art. These can be hand-held cutting tools or cutting tools built into, in particular, industrial cutting systems.
  • the cutting force required to cut a workpiece can be generated with the help of an electric motor, a hydraulic pump or a compressor.
  • the cutting tools have two cutting edges that can be displaced relative to one another, of which at least one cutting edge or else both cutting edges can be displaced relative to the tool body of the cutting tool.
  • the aim here is to keep a kerf formed between the cutting edges as small as possible, even when the workpiece is loaded, so that parts of the workpiece cannot become jammed in the kerf. In particular, this is a problem when cutting fine-wire cables, for example, where individual strands can get into the cutting gap.
  • the direction of the cutting force i.e. the line of action of the cutting force
  • the cutting plane i.e. the cutting direction leads to the cutting parts being pushed apart transversely to the cutting plane, which in turn increases the cutting gap.
  • the cutting gap is set to virtually zero can. This is often not possible with cutting tools with interchangeable cutting parts or cutting jaws, for example universal tools such as those according to US Pat.
  • the end facing the cutting plane determines the first distance and that the first distance and/or the second distance are selected such that the point of intersection, in relation to a clockwise direction, is in front of the line of action of the cutting force (F Schn) lies.
  • the cutting edge or the cutting edge part is now supported on the cutting jaw so that it can move minimally relative to the cutting jaw (or alternatively, the cutting edge is supported relative to an immobile partial area of the cutting edge part), so that the reaction force from a workpiece acting back on the cutting edge part does not lies on the line of action of the cutting force.
  • the line of action of the cutting force is not oriented parallel to the cutting plane, but is tilted relative to it.
  • the angle between the cutting plane and the line of action of the cutting force is usually greater than 1° and less than 30°, more preferably in a range between 10° and 25°.
  • the opposing force refers to that force which acts from the workpiece back onto the cutting part when this dekraft exerts a cutting force on the workpiece.
  • the cutting edge be pivotable to such an extent that a cutting gap occurring between the cutting parts when cutting the workpiece is at least reduced the dimension is of the order of 1° or fractions thereof.
  • the cutting edge can tilt by one or more tenths of a degree.
  • the cutting tool can be designed in such a way that the cutting gap is closed by the pivoted cutting edge, in that the first cutting edge of the first cutting edge part touches the second cutting edge of the second cutting edge part.
  • at least a partial area of the incision gap extending parallel between the cutting planes is closed. This prevents themselves smallest sections of the workpiece to be cut, for example individual strands of a cable, can jam in it.
  • a cutting tool with a tool body having two cutting jaws that can be displaced relative to one another, a first cutting jaw having a first assembly level on which a first cutting edge part having a first cutting edge is supported, a second cutting jaw having a second mounting plane, on which a second cutting edge part having a second cutting edge is supported, wherein a cutting plane, along which the cutting edge parts can be moved, lies essentially parallel to the first and the second mounting plane, wherein the cutting edge of the respective cutting edge part or the respective cutting part as a whole, is pivotable transversely to the associated assembly plane, the cutting part having a substantially orthogonal to the cutting plane running attack surface for a driving force and are given in the assembly planes assembly contact areas in which on a Monta A counter-retaining force acts on a flat supported counter-mounting surface of the cutting part or the cutting edge on a side of the cutting-edge part or the cutting edge facing away from the cutting plane, with a resultant force corresponding to the driving force also forming a first line of
  • the cutting tool is designed in such a way that an intersection point between a direction of a driving force acting on a contact surface of the cutting part for actuating the cutting tool and a direction of a counter-retaining force of the cutting jaw acting essentially orthogonally to the assembly plane on a counter-retaining surface of the cutting part relative to clockwise in front of the line of action of the cutting force of the cutting tool.
  • This ensures that a torque acting on the cutting part is generated, which moves the pivoted cutting part towards the cutting plane. This results in the previously described reduction or complete closure of the cutting gap.
  • the point of intersection between the direction of the driving force and the direction of the counter-supporting force defines the point about which the blade part can tilt.
  • the cutting edge part tilts inwards, ie towards the respective other cutting edge part.
  • the cutting part is pivotably mounted on the assigned cutting jaw.
  • a first portion of the cutting part that has a cutting edge can be pivotably mounted on a second portion of the cutting part that is immovably connected to the cutting jaw.
  • the cutting jaw carrying the cutting part is mounted pivotably on the tool body of the cutting tool.
  • All types of embodiment have a pivoting mobility of the cutting edge relative to the tool body of the cutting tool, so that the mode of action according to the invention for closing the cutting gap can be achieved.
  • the specific design of the cutting tool in particular the location at which the pivoting movement for the cutting edge is implemented, depends on the type of cutting tool in question. In the case of cutting tools with interchangeable cutting parts, beispielswei se universal tools, it is advantageous to mount the cutting parts on the cutting jaws so that they can be pivoted minimally. In the case of cutting tools with blade parts immovably fastened to the cutting jaws, on the other hand, it can be advantageous to pivotably mount a portion of the blade part that carries the blade on a fixed portion of the blade part. Finally, the cutting jaw itself can be pivoted on the tool body of the cutting tool.
  • the blade part is designed in such a way that the counter-mounting surface of the blade part, which is acted upon by the counter-mounting force, and the contact surface of the blade part, which is acted upon by the driving force, are spaced so far outwards from the plane of the cutting edge that the point of intersection of which lies outside the line of action of the cutting edge acting on the workpiece to be cut by virtue of the cutting edge part.
  • This training can be achieved in that the counter-mounting surface with which the blade part on the assembly plane of the cutting jaw is supported further away from the cutting plane than is done in the prior art in an embodiment in which the point of intersection of the counter-supporting force and the driving force lies on the line of action of the cutting force.
  • a contact surface between the counter-mounting surface of the cutting edge part and the associated cutting jaw can be formed, for example, on a projection of the cutting edge part, which protrudes from an outer side of the cutting edge part that faces away from the cutting plane. In contrast to the other sections of the blade part, this projection protrudes into the mounting plane of the cutting jaw.
  • the driving force of the cutting tool which causes the cutting part to be displaced, also acts against a contact surface of this projection, so that the intersection point of counter-supporting force and driving force is shifted outwards relative to the line of action of the cutting force of the cutting part, i.e. away from the cutting plane .
  • the counter-retaining surface of the first cutting edge part, which is acted upon by the counter-retaining force, relative to a direction parallel to the mounting plane, is offset so far in the direction of the second cutting edge part compared to the contact surface of the first cutting edge part, which is acted upon by the driving force is that the point of intersection between the counter-support force and the driving force lies outside the line of action of the cutting force of the blade part acting on the workpiece to be cut.
  • the contact surface acted upon by the driving force and the counter-mounting surface acted upon by the counter-mounting force lie further apart than in the embodiment described above, with the attack surface and the counter-mounting surface - based on a direction which is parallel to the mounting level runs - are offset to each other.
  • the offset between the counter-mounting surface and the engagement surface can, for example, have an amount which corresponds to one-third to two-thirds of the height of the cutting part, based on the direction parallel to the mounting plane.
  • the offset is one tenth or more of a perpendicular distance between the mounting planes.
  • the counter-supporting force of the cutting jaw acting substantially orthogonally to the mounting plane, can act, for example, on a projection or a step of the cutting part in this area, while the driving force of the cutting tool acts, for example, on a remote side edge of the cutting tool.
  • a surface normal of the side edge preferably points in a direction parallel to the mounting plane of the cutting jaw.
  • a further possible embodiment which is of particular interest in the case of cutting tools which have a cutting part immovably connected to an associated cutting jaw, can provide that the cutting part has a first partial area having the cutting edge and a second partial area connected to the cutting jaw , on which the first partial area is pivotably mounted, the point of intersection between the counter-supporting force of the cutting jaw and the driving force of the cutting tool defining a pivot center outside the line of action of the cutting force of the cutting part acting on the workpiece to be cut, around which the first partial area rotates relative to the second part is rich pivoted.
  • the cutting edge part itself is designed in at least two parts, with a first and a second partial area being pivotably connected relative to one another, so that the first partial area having the cutting edge can be pivoted into the cutting plane.
  • the connection between the first sub-area and the second sub-area can be achieved, for example, via a screw which allows the pivoting movement of the first sub-area relative to the second sub-area.
  • the screw or screws, which are used to attach the first sub-area to the second sub-area are not tightened but allow the pivoting mobility, it being preferable to glue the screws to the sub-areas in order to restrict the pivoting mobility in a reproducible manner .
  • the point of intersection between the counter-mounting force acting on the stationary second partial area and the driving force lies outside the line of action of the cutting force of the cutting edge part, so that a torque is generated which pivots the pivotable first partial area around the pivot center, which is preferably at the same location as the Intersection of the counter-bracket force and the driving force is formed so that the first portion tilts in the direction of the cutting plane of the cutting part.
  • the cutting tool can be designed in such a way that the cutting jaws are pivotably mounted on a common axis of rotation. This design is used in particular for hand-held cutting tools. At least one cutting jaw, but preferably both cutting jaws, are pivotable about a common axis of rotation formed on the tool body.
  • the cutting tool can be designed in such a way that at least one cutting part is mounted in a linearly displaceable manner on the associated cutting jaw of the cutting tool, so that the cutting parts can be displaced toward one another essentially parallel to the cutting plane.
  • This embodiment is particularly suitable for automatic cutting systems, but also for hand-held cutting tools in which the cutting parts are to be moved towards one another in a linear movement.
  • the cutting jaws are separably connected to the tool body.
  • the cutting tool can be designed as a universal tool, which can accommodate different cutting parts, but also other tool attachments, for example for bending, punching or cranking. Such an embodiment is also particularly advantageous for tools that perform a large number of work processes and therefore the tool attachment has to be changed frequently.
  • Fig. 1 a cutting tool with a linearly displaceable cutting part
  • FIG. 2 shows a plan view of the cutting tool according to FIG. 1,
  • Fig. 3 is an enlarged representation of a portion of the cutting tool, sectioned along the line III - III in Fig. 2,
  • FIG. 3a shows an enlarged detailed representation of the object according to FIG. 1, sectioned along the purple-purple plane
  • 5 shows the arrangement according to FIG. 4 in a longitudinal section
  • 5a shows an exploded view of the arrangement after the workpiece has been cut
  • FIG. 6 shows a first embodiment according to the invention of two cutting parts with one workpiece
  • FIG. 7 shows a longitudinal section of the arrangement according to FIG. 6,
  • FIG. 8 shows a side view of the arrangement according to FIG. 6, FIG.
  • FIG. 10 a longitudinal section of the arrangement according to FIG. 9, FIG. 11 a side view of the arrangement according to FIG. 9, FIG. 12 a further embodiment according to the invention of two cutting blades with one workpiece,
  • FIG. 13 shows a longitudinal section of the arrangement according to FIG. 12,
  • FIG. 13a shows the enlarged longitudinal section along the line XHIa-XHIa in FIG. 12,
  • FIG. 14 shows a side view of the arrangement according to FIG. 12, 15 shows a cutting tool according to the invention according to an alternative embodiment with two cutting jaws mounted pivotably on a common axis of rotation,
  • FIG. 16 shows a plan view of the cutting tool according to FIG. 15,
  • FIG. 17 shows an enlarged portion of the cutting tool according to FIG. 15.
  • Figure 1 shows an example of a possible embodiment of a cutting tool 1.
  • the cutting tool 1 is here in the form of a universal tool with interchangeable cutting parts 9, 10 is formed.
  • the cutting parts 9, 10 are detachably connected to the cutting jaws 2, 3 of the cutting tool 1 and can be replaced, for example, with other tool attachments for cutting, punching, crimping or the like.
  • the cutting jaws 2, 3 are mounted on a tool body 4 of the cutting tool 1, with at least one cutting jaw 2, 3 being pivotable about a joint 24 in order to separate the two cutting jaws 2, 3 from one another and to remove the cutting parts 9, 10 be able.
  • DE 19926481 A1 US Pat. No. 6,230,542 B1
  • Each cutting part 9, 10 is formed with egg ner cutting edge 7, 8.
  • the cutting edges 7, 8 can be moved toward each other by the cutting edge 7 shown in the illustration of the unte ren cutting part 9 being moved upwards by means of a piston 25. This can be done, for example, with the help of a hydraulic force.
  • the lower cutting edge part 9 can be displaced relative to the tool body 4 .
  • the displacement takes place essentially in such a way that the cutting edge 7 of the lower cutting part 9 is essentially parallel and with as little as possible Distance to the cutting edge 8 of the fixed blade part 10 is shifted.
  • a cutting plane 11 results between the cutting edges 7, 8 moving toward one another.
  • the cutting parts 9, 10 are guided by a tongue and groove guide 30 in relation to the direction of travel of the lower cutting part 9 during a cutting operation.
  • FIG. 3a shows this in relation to a sectional plane through the lower cutting edge part 9.
  • the tongue and groove guide 30 results from a tongue 31 in the cutting edge part 9 and a groove 32 in the cutting jaws 2, 3.
  • the reverse configuration can also be present. This guidance results from the following assembly levels 5 and 6, which are also mentioned.
  • the cutting edge parts 9, 10 are supported in the associated cutting jaw 2, 3 in such a way that a counter-mounting surface 39, 40 of the respective cutting edge part 9, 10 abuts against a mounting area 18, 19 of the cutting jaw 2, 3 supports.
  • a counter-retaining force F H acts on a side of the counter-retaining surface 39, 40 of the respective cutter part 9, 10, which is remote from the cutting plane 11, and this force will be explained later with reference to FIGS. If the cutting part 9, 10 pivots relative to the mounting plane 5, 6, ie tilts, the counter-mounting surface 39, 40 is reduced to a line of contact between the cutting part 9, 10 and the mounting plane 5, 6 of the cutting jaw 2.
  • FIG. 4 first shows an arrangement with two blade parts 9, 10 of a not further illustrated provided cutting tool 1.
  • a first cutting part 9 has a first cutting edge 7, while a second cutting part 10 has a second cutting edge 8.
  • the two blade parts 9, 10 can be moved towards one another. This is done either by moving the lower cutting edge part 9, as previously shown using the cutting tool 1 according to FIG. 1, or by moving both cutting edge parts 9, 10 in opposite directions.
  • a piston 25 shown in more detail in FIG. 3 is displaced upwards relative to the tool body 4 .
  • the piston 25 acts with a driving force FA against a working surface 33 of a working area 16 of the cutting edge part 9.
  • the action of the driving force FA causes the lower cutting edge part 9 to move parallel to the assembly level 5 (or assembly level 6), in which a partial area of the cutting edge part 9 , 10 is kept displaceable.
  • the cutting jaw 2, 3 itself exerts a counter-mounting force FH on the counter-mounting surface 39, 40 of the cutting part 9, 10 being held, with the lines of force 35, 36 of the driving force FA and the counter-mounting force FH being orthogonal to one another and at an intersection point 15 cut.
  • a resultant force de corresponding to the driving force FA forms a first line of force 35
  • a resultant force corresponding to the counter-mounting force FH forms a second line of force 36
  • the drawn lines of force 35, 36 denote a resultant force, which represents a mathematical and graphic summary of an amount or line of a force that in reality would otherwise act two-dimensionally over the entire contact surface 33, 34 or counter-mounting surface 39, 40.
  • the lines of force 33, 34 or counter-mounting surfaces 39, 40 are located where contact between the cutting part 9, 10 and the Mon day level 5, 6 of the cutting jaw 2, 3 remains even when the cutting part 9, 10 pivots or tilts . According to the state of the art shown in FIG .
  • the cutting parts 9, 10 when cutting fine-stranded cables to the outside, ie away from the cutting plane 11, so that a cutting gap 14 between the cutting edges 7, 8 is formed or enlarged.
  • the line of action 13 of the cutting force Fs dm does not run parallel to the cutting direction or cutting plane 11 of the cutting tool 1.
  • the cutting force Fs dm acts via the corresponding reaction force in such a way that the cutting edge parts 9, 10 are pushed apart transversely to the cutting plane 11. This creates a cutting gap 14 in the cutting plane 11 of the cutting tool 1.
  • the cutting parts 9, 10 tend to separate accordingly in such a cutting process.
  • the workpiece 12 is, for example, a cable with a large number of fine-wire strands
  • individual strands can get into this cutting gap 14 and jam there, so that the function of the cutting tool 1 is disrupted.
  • the formation of a cutting gap 14 and thus the spacing of the cutting edges 7, 8 of the opposite cutting edge parts 9, 10 also results in an incomplete cut, so that the cutting plane of the workpiece 12 is not optimally flat, but burrs are formed having.
  • a cutting tool 1 designed according to the invention in which the cutting gap 14 between the cutting edges 7, 8 of the cutting tool 1 is prevented from occurring or being enlarged.
  • Figures 6 to 8 show a first embodiment, in which the cutting parts 9, 10 are modified compared to the prior art in such a way that the intersection 15 of the driving force FA and counter-support force FH acting on the corresponding cutting edge part 9, 10 is related to the clockwise direction in front of the line of action 13 of the cutting force Fs chn , ie on the side facing away from the cutting plane 11 of the real shown in the figures kungsline 13.
  • the respective blade part 9, 10 in the assembly plane 5, 6 on a material recess 26 see also the dashed line shown in Figure 3a of the material recess 26).
  • the plunger 25 of the cutting tool 1 engages the lower outer edge of the cutting edge part 9 which forms the engagement surface 33 .
  • the holder of the respective cutting part 9, 10 in the associated Schneidba cke 2, 3 is in contrast to the counter-mounting surface 39, 40 of the cutting denwel 9, 10, which in a direction of movement of the movable cutting part 9 borders on the material recess 26.
  • the force exerted on the counter-mounting surfaces 39, 40 is thus clearly shifted in the direction of movement, based on its resultant rende, compared to the contact surfaces 33, 34 for the displacement force (driving force F A ).
  • the contact surfaces 33, 34, against which the driving force F A acts, and the counter-mounting surfaces 39, 30, against which the counter-mounting force F H acts fall apart in such a way that the point of intersection 15 of these forces in relation to the respective cutting edge part 9, 10 lies on the line of action 13 of the cutting force Fs dm .
  • the point of application of the counter-mounting force F H is offset relative to a direction parallel to the cutting plane 11 relative to the point of application of the driving force F A in the direction of the respectively opposite cutting edge part 9, 10.
  • the intersection point 15 is now further outside, a torque arises which in the assembly plane 5, 6 nim movably mounted blade parts 9, 10 are moved towards one another, ideally in such a way that they are just touching.
  • the tilting of the blade parts 9, 10 is less than 1°, preferably one or more tenths of a degree.
  • Figures 9 to 11 show another possible embodiment of a cutting tool 1 according to the invention.
  • the cutting parts 9, 10 are also designed in such a way that the point of intersection 15 of the driving force FA and the counter-mounting force FH in relation to the clockwise direction is in front of the line of action 13 of the cutting force Fs dm lie and thus a torque is generated, which tilts the respective blade part 9, 10 in the direction of the cutting plane 11, so that the blades 7, 8 are as close together as possible.
  • the blade parts 9, 10 are shaped in such a way that the contact surfaces 33, 34 of the contact areas 16, 17 and the counter-mounting surfaces 39, 34 are particularly far to the outside, i.e.
  • Figures 12 to 14 show another possible variant, in which the cutting parts 9, 10 are formed in two parts, namely with a supported on the parent to cutting jaw 2, 3 part 21 and an opposite This portion 21 movably mounted portion 20.
  • the two rich parts 20, 21 can be movably mounted aneinan by means of fasteners 27.
  • the fastening means 27 are, for example, screws, which can additionally be glued in the threaded bore 28 of the partial area 20 accommodating the threaded shank 29 of the fastening means 27 in order to permanently fix the set range of motion (cf. FIG. 13a).
  • the movable portion 20 can be tilted about a pivot center 23 to such an extent that the cutting edges 7, 8 of the corresponding cutting edge parts 9, 10 can be guided together, namely while avoiding a cutting gap 14.
  • the driving force F A and against The holding force F H rests on the partial area 21 of the cutting part 9, 10 that is fixed relative to the cutting jaw 2, 3, namely on a working surface 33, 34 and a counter-holding surface 39, 40.
  • the point of intersection 15 of the forces lies outside the line of action 13 of the cutting force Fs dm , namely in the clockwise direction in front of the line of action 13.
  • FIG. 15 to 17 show another possible embodiment of a hand-held cutting tool 1.
  • the cutting jaws 2, 3 of the cutting tool 1 are mounted on a common axis of rotation 22.
  • the cutting jaws 2 , 3 and thus also the cutting parts 9 , 10 connected thereto in particular in an exchangeable manner can be pivoted essentially parallel to the cutting plane 11 about this axis of rotation 22 .
  • either both dies 2, 3 can be moved toward one another, or only one of the dies 2, 3, while the other die 2, 3 is fixed relative to the tool body 4 of the cutting tool 1.
  • a cutting tool which is characterized in that the end 41 facing the cutting plane 11 has the first distance 37 and that the first distance 37 and/or the second distance 38 are selected such that the point of intersection 15, in relation to a clockwise direction , in front of the line of action 13 of the cutting force Fs dm .
  • a cutting tool characterized in that the end 41 facing the cutting plane 11 amounts to the first distance 37, that the first distance 37 corresponds to one tenth or more of a perpendicular distance between the mounting planes 5, 6, or that the second distance 38 corresponds to one tenth or more of a perpendicular distance between the assembly levels 5, 6, or that both the first and second distances 37, 38 correspond to one tenth or more of a perpendicular distance between the assembly levels 5, 6, and that the Intersection 15, re- Gen in a clockwise direction, in front of a line of action 13 of a cutting force Fs dm acting on the blade parts (9, 10) during a cutting process for cutting a workpiece 12.
  • a cutting tool which is characterized in that the cutting edge 7, 8 can be pivoted to such an extent that a cutting gap 14 occurring between the cutting edge parts 8, 10 when cutting the workpiece 12 is at least reduced, the cutting gap 14 in particular ge is closed by the first cutting edge 7 of the first cutting part 9 touches the second cutting edge 8 of the second cutting part 10 .
  • a cutting tool which is characterized in that the cutting part 9, 10 is pivotably mounted on the associated cutting jaw 2, 3 or that a first portion 20 of the cutting part 9, 10 having a cutting edge 7, 8 can be pivoted on an immovable with the cutting jaw 2, 3 connected second portion 21 of the cutting part 9, 10 is mounted or that, the cutting part 9, 10 bearing cutting jaw 2, 3 is pivotally mounted on the tool body 4 of the cutting tool 1.
  • a cutting tool which is characterized in that the cutting part 9, 10 is designed in such a way that the counter-mounting surface 39, 40 of the cutting part 9, 10, which is acted upon by the counter-holding force, and the contact surface 33, 34 of the cutting part, which is acted upon by the driving force F A 9, 10 are spaced so far outwards from the cutting plane 11 that their point of intersection 15 lies outside the line of action 13 of the cutting force FSchn of the cutting part 9, 10 acting on the workpiece 12 to be cut.
  • a cutting tool which is characterized in that the counter-support surface 39 of the first th cutting edge part 9, in relation to a direction parallel to the assembly plane 5, is offset so far in the direction of the second cutting edge part 10 in relation to the contact surface 33 of the first cutting edge part 9, which is acted upon by the driving force FA, that the intersection point between the counter-supporting force FH and the driving force FA outside of the line of action 13 of the workpiece 12 to be cut de a cutting force Fs dm of the cutting part 9 is located.
  • a cutting tool which is characterized in that the cutting jaws 2, 3 are mounted pivotably on a common axis of rotation 24.
  • a cutting tool which is characterized in that at least one cutting edge part 9, 10 is mounted in a linearly displaceable manner on the associated cutting jaw 2, 3 of the cutting tool 1, so that the cutting edge parts 2, 3 essentially parallel to the cutting plane 11 on top of one another are too relocatable.
  • a cutting tool characterized in that the cutting jaws 2, 3 are detachably connected to the tool body 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Scissors And Nippers (AREA)

Abstract

L'invention concerne un outil de coupe (1) comportant une première lame (7) et une deuxième lame (8). Afin de concevoir l'outil de coupe (1) de manière avantageuse de telle sorte qu'un espace de coupe entre les lames (7, 8) est réduit ou fermé, les lames sont montées pivotantes et maintenues l'une contre l'autre au moyen de forces de retenue antagoniste (FH).
EP22711519.3A 2021-03-05 2022-03-07 Outil de coupe Pending EP4302372A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021105427 2021-03-05
PCT/EP2022/055757 WO2022184939A1 (fr) 2021-03-05 2022-03-07 Outil de coupe

Publications (1)

Publication Number Publication Date
EP4302372A1 true EP4302372A1 (fr) 2024-01-10

Family

ID=80819781

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22711519.3A Pending EP4302372A1 (fr) 2021-03-05 2022-03-07 Outil de coupe

Country Status (6)

Country Link
US (1) US20240139837A1 (fr)
EP (1) EP4302372A1 (fr)
KR (1) KR20230156047A (fr)
CN (1) CN117099278A (fr)
DE (1) DE102022105305A1 (fr)
WO (1) WO2022184939A1 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1139572A (en) * 1914-04-03 1915-05-18 Rogers Shear Company Envelop-opener.
US1326460A (en) * 1917-03-27 1919-12-30 Hartford Fairmont Co Shear mechanism.
US6230542B1 (en) 1999-06-10 2001-05-15 Gustav Klauke Gmbh Hydraulic apparatus
DE19926481B4 (de) 1999-06-10 2013-09-12 Gustav Klauke Gmbh Hydraulisches Arbeitsgerät
JP2006187817A (ja) * 2004-12-28 2006-07-20 Fuji Photo Film Co Ltd ギロチンカッタおよびテープ貼付け装置
US20200055130A1 (en) 2018-08-14 2020-02-20 Milwaukee Electric Tool Corporation Cutting Tool Head

Also Published As

Publication number Publication date
WO2022184939A1 (fr) 2022-09-09
CN117099278A (zh) 2023-11-21
KR20230156047A (ko) 2023-11-13
DE102022105305A1 (de) 2022-09-08
US20240139837A1 (en) 2024-05-02

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