WO2021083875A1 - Verfahren zur herstellung einer messerklinge und messerklinge - Google Patents
Verfahren zur herstellung einer messerklinge und messerklinge Download PDFInfo
- Publication number
- WO2021083875A1 WO2021083875A1 PCT/EP2020/080151 EP2020080151W WO2021083875A1 WO 2021083875 A1 WO2021083875 A1 WO 2021083875A1 EP 2020080151 W EP2020080151 W EP 2020080151W WO 2021083875 A1 WO2021083875 A1 WO 2021083875A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- plane
- opening
- knife blade
- contact surface
- blade
- Prior art date
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Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D34/00—Mowers; Mowing apparatus of harvesters
- A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
- A01D34/02—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having reciprocating cutters
- A01D34/13—Cutting apparatus
- A01D34/14—Knife-bars
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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
- B21D19/00—Flanging or other edge treatment, e.g. of tubes
- B21D19/08—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws
- B21D19/088—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws for flanging holes
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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
- B21D53/00—Making other particular articles
- B21D53/60—Making other particular articles cutlery wares; garden tools or the like
- B21D53/64—Making other particular articles cutlery wares; garden tools or the like knives; scissors; cutting blades
- B21D53/647—Making other particular articles cutlery wares; garden tools or the like knives; scissors; cutting blades mower blades
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- 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
- B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
- B23P15/40—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools shearing tools
Definitions
- the following disclosure relates to a method for producing a knife blade for a mower knife of an agricultural harvesting machine, wherein a substantially disk-shaped blade blank is provided in a preparation step and wherein the blade blank has an underside extending in a first plane and an upper side extending in a second plane , as well as a knife blade manufactured according to the method for a mower knife of an agricultural harvesting machine.
- Knife blades of this type are commonly used in mowers of agricultural harvesting machines. A large number of knife blades are arranged next to one another and screwed or riveted onto a knife rail. As part of the manufacturing process, appropriate openings are made in the knife blade, for example to accommodate the fastening means.
- the document US 4223514 A relates to a mowing knife with reduced material thickness, in which recess areas and reinforcement areas are formed on the knife surface, whereby the weight of the knife blade is reduced and material is saved.
- the fastening bores have a circumferential protrusion which projects beyond a lower surface facing the knife bar. These overhangs should be fitted into suitable recesses in the knife rail. If there are no suitable recesses, it is suggested to grind off the protrusions or to manufacture them in the manufacturing process so that they do not protrude beyond the lower surface of the mower blade.
- a disadvantage of the prior art mower knife is that its Alignment with respect to the assembly on the knife rail is specified and unchangeable.
- One object can be to improve a knife blade and a method for producing a knife blade in such a way that it is possible to mount both surfaces on a knife rail.
- a substantially disk-shaped blade blank is provided in a preparation step, the blade blank having an underside extending in a first plane and an upper side extending in a second plane.
- An opening connecting the first level with the second level is made in the blade blank.
- a region of the blade blank surrounding the opening is deformed in such a way that an upper contact surface surrounding the opening is created in a third plane, the third plane being further away from the first plane in a normal direction perpendicular to the first plane than second level.
- the upper contact surface surrounding the opening is formed in a simple manner by a forming process.
- the upper contact surface is used to attach the knife blade to a flat surface, such as, for example, on a knife rail.
- a material thickness of the knife blade in the normal direction is at least partially smaller than a distance in the normal direction between the third plane and the first plane. The process creates the contact surface in the third level.
- the blade blank is made available, for example, by a primary forming or reshaping method, the provision in the sense of the disclosure also including procurement of the blade blank from a third-party production process.
- At least one opening is made in the blade blank.
- the breakthrough can alternatively already be present in the blade blank provided, for example by producing the blade blank with the opening in a punching process.
- the opening can be made in a separate step, for example as a bore. Even if the breakthrough in the context of the disclosure is predominantly designated in the singular, it goes without saying that several breakthroughs per blank can be made simultaneously or one after the other.
- the opening in the blade blank can initially not be continuous, but rather be designed as a blind hole, the continuous opening being formed by the deformation during the forming step.
- the first plane is defined by spatial directions Y and Z arranged at right angles to one another in space in the sense of a Cartesian coordinate system.
- the designation level YZ1 is also used for the first level.
- the normal direction perpendicular to the first plane thus corresponds to a spatial direction X in the sense of a Cartesian coordinate system.
- a contact surface is a plane surface that allows contact with another planar component, such as a knife rail to which the knife blades are attached.
- the term screw-on surface is also used in this context.
- the area surrounding the opening is deformed to the upper contact surface by tensile pressure forming, the opening being brought to a target cross-sectional area in the forming step by the tensile pressure forming.
- the target cross-sectional area can be larger or smaller than a cross-sectional area of the opening before the order forming step.
- the Klin genrohling is deformed in the forming step with an upper forming die and a lower forming die, wherein one of the forming dies has a calibration pin engaging in the opening, a pressure applied to the forming die and thereby the upper contact surface is formed.
- at least one shaping step is provided in which the blade blank is shaped in such a way that a material thickness of the knife blade is at least partially less than a height of the knife blade, the height of the knife blade being at a distance from the first Plane corresponds to the third plane in the normal direction.
- the forming step serves to provide the blade blank, the material thickness of which corresponds to a distance between the first plane and the second plane in the normal direction.
- an edge area is formed around the opening on the underside of the clincher blank, the edge area being arranged in the normal direction between the first level and the second level.
- a lower contact surface can be formed around the opening on the underside of the blade blank, the lower contact surface being arranged in the first plane. The lower contact surface is formed, for example, in the forming step around the edge area.
- a further embodiment of the method consists in that the reshaping step comprises a first reshaping and a second reshaping, with the first reshaping of the region of the blade blank surrounding the opening into a stub extending in the normal direction perpendicular to the first plane of the blade blank is deformed and with the subsequent second Umform the nozzle is calibrated to the desired height of the knife blade, the height of the knife blade corresponds to the distance of the first plane to the third plane in the normal direction.
- the area surrounding the opening is arranged concentrically around the opening, for example.
- the area can extend in the first plane over an area which corresponds to a multiple of the cross-sectional area of the opening, for example twice to 20 times the cross-sectional area, in particular five to 15 times the cross-sectional area.
- the deformation is carried out during the first deformation, for example as a tensile compression deformation men carried out.
- the connecting piece can advantageously be shaped, for example, by deep drawing, the deep drawing of the area surrounding the opening also being referred to as collar drawing.
- the breakthrough in the Klin gene blank can initially not be continuous, but rather as a blind hole, the continuous breakthrough being created by the deformation during the first forming.
- the nozzle is calibrated to the predetermined height in the normal direction perpendicular to the first plane. Calibration in the sense of the disclosure means that the height of the connecting piece in the normal direction is brought to a predetermined level.
- the opening is widened to an intermediate cross-sectional area during the first reshaping, the opening encircled by the nozzle being brought to a target cross-sectional area by a pressing process during the second reshaping, where at the target cross-sectional area is less than or equal to the intermediate cross-sectional area.
- the upper contact surface surrounding the opening is formed in the third plane by the deformation of the connecting piece during the second deformation.
- a lower contact surface is also formed around the opening on the underside of the blade blank, the lower contact surface being arranged in the first plane.
- a further aspect relates to a measuring blade for a mower knife of an agricultural harvesting machine produced according to the method described.
- the knife blade has a lower contact surface extending in the first plane.
- the knife blade has an upper contact surface that extends in the third plane.
- the third plane and the first plane are aligned parallel to one another, for example.
- a flat surface is arranged on at least one of the surfaces of the top and the bottom of the blade blank.
- the upper contact surface extending in the third level forms, for example, a partial surface of the plane surface on the upper side.
- which is in the first level extending lower contact surface forms, for example, a partial surface of the plane surface on the underside.
- the lower contact surface can be machined together with a cutting edge on the blade as part of the flat surface on the underside by means of a machining production process.
- the plane surface is designed, for example, as a flat surface, with any points on the plane surface being spatially arranged in a plane, here in the third plane or in the first plane.
- a recess area can also form a surface which, however, can be uneven, that is to say curved or arched, so that points on the surface of the recess area are spatially arranged in different planes.
- a certain surface quality which relates to a surface roughness, is also referred to as planarity or planicity.
- the term plane surface should not be understood as a stress on a certain surface quality.
- the plane surface can be processed by means of at least one machining production process in order to obtain a certain surface roughness.
- the person skilled in the art knows that the plane surface within the meaning of the disclosure can be produced even without machining the surface, already by a primary forming process, such as casting or sintering.
- upper side of the blade and “lower side of the blade” are chosen arbitrarily and correspond to the predominantly usual installation position of the knife blade.
- the knife blade produced according to the invention can also advantageously be installed in an installation position with the underside of the blade facing up, depending on how the cutting mechanism of the harvesting machine is constructed. With the upper contact surface and the lower contact surface, the knife blade can advantageously be attached to the knife rail with each of the two surfaces aligned with the knife rail.
- Knife blades of this type are commonly used in mowers of agricultural harvesting machines.
- a large number of knife blades are arranged next to one another and screwed or riveted onto the knife rail, with the knife tips, which are formed by the tapering cutting edge areas, pointing in the working direction.
- the knives formed in this way are guided to move back and forth on a knife bar transversely to the working direction.
- the cutting edges of the knife blades interact with the cutter fingers attached to the cutter bar, with the Mowing fingers can form counter-blades in the form of a blade gap.
- the cutting areas of the knife blades are aligned at an angle to the working direction and the counter-cutting edges of the mowing fingers are approximately parallel to the working direction, so that the crop can dip into the cutting area between the knife blades and the cutting fingers and is cut off by the back and forth movement of the mower blade.
- An alternative option is to use it as a double knife with two mower blades rotating in opposite directions, or one fixed and one moving mower blade without a mower finger.
- the fleas of the knife blade is adapted to the clear dimension of the blade gap in such a way that there is a certain distance between the knife blade and the respective anvil because the clear dimension of the blade gap is subject to a tolerance and the knife blade is bent during operation by forces acting on the crop.
- the distance between the knife blade and the respective counter blade must not be too large, since then the crop can be drawn into the blade gap and will not be cut.
- FIGS. 1 a, 1 b and 1 c show a provided blade blank according to a first exemplary embodiment of the method before a forming step in different views;
- FIGS. 2a, 2b and 2c show the blade blank according to FIG. 1a after a first forming of the forming step according to the first exemplary embodiment of the method in different views;
- FIGS. 3a, 3b and 3c show the blade blank according to FIG. 1a after a second forming of the forming step according to the first exemplary embodiment of the method in different views;
- FIG. 4 shows the blade blank according to FIG. 1 a during the forming step according to one further embodiment of the method in a tool in a schematic sectional view;
- FIGS. 5a, 5b and 5c show a knife blade produced according to the exemplary embodiment of the method according to FIG. 4 in different views;
- FIGS. 6a and 6b the knife blade according to FIG. 5a in sectional views
- FIG. 7 shows the blade blank according to FIG. 1 a during the forming step according to a further exemplary embodiment of the method in a tool in a schematic sectional view;
- FIGS. 8a, 8b and 8c show a knife blade produced according to the exemplary embodiment of the method according to FIG. 7 in different views;
- FIGS. 9a and 9b the knife blade according to FIG. 8a in sectional views
- FIG. 10 shows the blade blank according to FIG. 1 a during the forming step according to a variant of the method in a tool in a schematic sectional representation
- FIGS. 11 a, 11 b and 11 c show a knife blade manufactured according to the exemplary embodiment of the method according to FIG. 10 in different views;
- FIGS. 12a and 12b the knife blade according to FIG. 11a in sectional views.
- FIGS. 1 a to 3 c use a first exemplary embodiment to illustrate a possible sequence of the method for setting a knife blade for a mower knife of an agricultural harvesting machine in several processing steps.
- a substantially disk-shaped blade blank 1 is provided in a provision step, the blade blank having an underside 5 extending in a first plane YZ1 and an upper side 6 extending in a second plane YZ2.
- the representations of the blade blank 1 are partially schematic. For example, there are no cutting edges in the illustration, which can be introduced at a later point in time, but can also already be present in the blade blank 1 provided.
- FIGS. 1 a, 2 a and 3 a each show the blade blank 1 in perspective with a view of the underside 5 of the blade blank 1.
- a Cartesian coordinate system with spatial directions X, Y and Z defines the three spatial directions. In all of the figures described below, the meaning of the Cartesian coordinate system is identical and will not be explained again. This applies regardless of whether a coordinate system is shown in the following figures or not.
- the planes YZ1 and YZ2 are spanned in the spatial directions Y and Z and are thus arranged parallel to one another.
- the blade blank 1 is also shown in perspective, but with a view of the upper side 6 of the blade blank 1.
- Figures 1c, 2c and 3c show a sectional view of part of the blade blank 1.
- the cutting plane is parallel to which the plane spanned by the spatial directions X and Z is arranged and runs through an opening 2.
- the blade blank 1 provided is described below with reference to FIGS. 1 a, 1 b and 1 c.
- a comparable blade blank 1 can be used in all of the described embodiments of the method.
- the opening 2 is introduced into the blade blank 1 in the spatial direction X, for example.
- three openings 2 are introduced in the region of a flinter edge 9 of the blade blank 1, which, for example, later serve to fasten the finished knife blade.
- the openings 2 have a dimension Q1 from which a cross-sectional area of each opening 2 results before the deformation.
- the openings 2 are cylindrical bores in the direction X, which connect the upper side 6 and the opposite underside 5 of the blade blank 1. In FIG.
- the deformation step comprises two deformation substeps, namely a first deformation and a second deformation.
- the processed blade blank is shown in Figures 2a, 2b and 2c after the first reshaping.
- the area 4 of the blade blank 1 surrounding the opening is deformed into a connecting piece 3 extending from the blade blank 1 in the normal direction X perpendicular to the first plane YZ1.
- the area 4 surrounding the opening 2 can be deformed into the connecting piece 3 by a tensile compression forming process, such as for example collar drawing, the opening 2 being widened to an intermediate cross-sectional area during the first forming.
- the dimension Q2 characterizing the intermediate cross-sectional area here a diameter Q2
- the approximately annular loading area 4 is deformed by the first reshaping in such a way that a trough shape is created on the underside 5 around the opening 2.
- the processed blade blank is shown in Figures 3a, 3b and 3c after the second forming.
- the nozzle 3 is calibrated to a fleas Fl of the knife blade, the fleas Fl of the knife blade corresponding to a distance between the first plane YZ1 and the third plane YZ3 in the normal direction X.
- the circumferential by the nozzle 3 breakthrough 2 is brought in the second forming by a pressing process on a target cross-sectional area, the target cross-sectional area is less than or equal to the inter mediate cross-sectional area.
- the dimension Q3 characterizing the target cross-sectional area is indicated, which dimension can be smaller than or equal to the previous dimension Q2.
- the diameter Q3 is roughly the same as the diameter Q2.
- the blade blank 1 for calibration during the second forming is in a calibration die (not shown) via at least one upper forming die (not shown) and at least one The lower molding die (not shown) and at least one calibration pin (not shown) engaging in the opening 2 is set, a pressure being applied to the molding stamp and the connecting piece 3 being deformed as a result.
- a cross-section of the calibration pin determines the target cross-sectional area of the opening 2.
- the predetermined length F1 of the connecting piece 3 in the direction X can advantageously correspond to a fleas of the later knife blade.
- the upper contact surface 7 surrounding the opening 2 is formed in the third plane YZ3.
- the previously trough-shaped loading area on the underside 5 around the opening 2 becomes a lower contact surface 8 around the opening 2 on the underside 5 of the blade blank 1 in the plane YZ1 educated.
- the number of openings 2 to be introduced or to be machined as described above can be selected as desired in the method described, since each opening 2 can basically be brought, deformed and calibrated in series in the machining steps described above. It can also be provided that several of the openings 2 are introduced, deformed and / or calibrated in parallel in the processing steps described above.
- FIGS. 3a, 3b and 3c also schematically show an embodiment of the measuring blade for a mower knife of an agricultural harvesting machine, produced according to the method described.
- the blade blank 1 has the features of the knife blade.
- the knife blade is distinguished in particular by an upper contact surface 7 which is arranged in the plane YZ3 and is formed on the connecting piece 3.
- the lower contact surface 8 is easilybil det around the opening 2.
- the upper contact surface 7 and the lower contact surface 8 can each advantageously be used to bring the knife blade into contact with another planar component, such as a knife rail (not shown) to which several knife blades are attached.
- the knife blade advantageously has a contact surface on both sides so that the knife blade can be fastened alternately with the top 6 or with the bottom 5 aligned with the knife rail.
- FIG. 4 shows the blade blank according to FIG. 1 a during the forming step in a tool in a schematic sectional view.
- the tool consists of an upper die 21 and a lower die 22. Between the upper die 21 and the lower die 22, the originally disc-shaped blade blank 1 is inserted.
- the lower side 5 extending in the first plane YZ1 faces the lower forming die 22 and the upper side 6 extending in the second plane YZ2 faces the upper forming die 21.
- the lower forming die 22 has three calibration pins 23 which engage in the three openings 2 of the blade blank 1.
- the entire forming step is carried out in one operation, that is to say without two successive forming operations.
- the area 4 of the blade blank 1 surrounding the opening 2 is deformed to the upper contact surface 7 surrounding the opening 2 in the third plane YZ3.
- the opening 2 receives its target cross-sectional area, which is larger than a cross-sectional area of the opening 2 before the forming step.
- the edge area 10 around the opening 2 on the underside 5 of the blade blank 1 is arranged in the normal direction X between the first plane YZ1 and the second plane YZ2, while the lower contact surface 8 is arranged around the opening 2 on the underside 5 of the blade blank 1 is trained.
- the lower contact surface 8 is arranged around the edge region 10 in the first plane YZ1.
- the lower forming die 22 has a shoulder 24 surrounding the calibration pin 23, which interacts with an annular recess 25 on the upper forming die 21 in order to deform the area 4 around the opening 2 of the blade blank 1 in a pressing process.
- the blade blank 1 is shaped in such a way that the material thickness of the knife blade is at least partially smaller than the fleas Fl of the knife blade, which corresponds to the distance between the first plane YZ1 and the third plane YZ3 in the normal direction X.
- further shaping work steps can be provided after the reshaping step in order to produce the final shape of the knife blade.
- these do not relate to the lowering position of the upper contact surface 7 in the third plane YZ3 and the lower one Contact surface 8 is in the first level YZ1.
- FIGS. 5a, 5b and 5c The knife blade, produced according to the exemplary embodiment of the method according to FIG. 4, is shown in various views in FIGS. 5a, 5b and 5c.
- FIG. 5a shows a top view with a view of the upper side 6, while FIGS. 5b and 5c each show perspective views, on the one hand with a view of the lower side 5 with the lower contact surface 8 and on the other hand with a view of the upper side 6 with the upper one Contact surface 7.
- FIG. 6a shows a section of the knife blade through the openings 2 along the line AA in FIG. 5a.
- Figure 6b shows a longitudinal section of the knife blade along the line B-B in Figure 5a.
- the lower contact surface 8 extends in the first plane YZ1 and that the upper contact surface 7 extends in the third plane YZ3.
- the third plane YZ3 and the first plane YZ1 are aligned parallel to one another.
- FIG. 7 shows the blade blank according to FIG. 1 a during the forming step in an alternative tool in a schematic sectional view.
- the process differs from the exemplary embodiment described with reference to FIG. 4 through the use of a modified tool which also consists of the upper forming die 21 and the lower forming die 22.
- the area 4 of the blade blank 1 surrounding the opening 2 is deformed to the upper contact surface 7 surrounding the opening 2 in the third plane YZ3.
- the opening 2 receives its target cross-sectional area, which is greater than a cross-sectional area of the opening 2 before the forming step.
- the edge area 10 around the opening 2 on the underside 5 of the blade blank 1 is arranged in the normal direction X between the first plane YZ1 and the second plane YZ2, while the lower contact surface 8 around the opening 2 on the underside 5 of the blade blank 1 is trained.
- the lower contact surface 8 is arranged around the edge region 10 in the first plane YZ1.
- the lower die 22 has a shoulder 24 surrounding the calibration pin 23, which is surrounded by an annular groove 26.
- the annular groove 26 cooperates with a raised ring 27 on the upper forming die 21.
- the area 4 around the opening 2 of the blade blank 1 is in the pressing process between the paragraph 24, the caliber Rierzapfen 23 and the area within the raised ring 27 to the upper contact surface 7 is deformed, while the lower contact surface 8 is formed in the annular groove 26 by the material of the blade blank 1 is pressed through the raised ring 27 into the annular groove 26.
- FIGS. 8a, 8b and 8c show various views in FIGS. 8a, 8b and 8c.
- FIG. 8a shows a top view
- FIGS. 8b and 8c each show perspective views, on the one hand with a view of the underside 5 with the lower contact surface 8 and on the other hand with a view of the top 6 with the upper contact surface 7.
- FIG. 9a shows a section of the knife blade through the openings 2 along the line AA in Figure 8a.
- FIG. 9b shows a longitudinal section of the knife blade along the line B-B in FIG. 8a.
- the lower contact surface 8 extends in the first plane YZ1 and that the upper contact surface 7 extends in the third plane YZ3.
- the third plane YZ3 and the first plane YZ1 are aligned parallel to one another.
- FIG. 10 shows the blade blank according to FIG. 1 a during the forming step in a tool in a schematic sectional view.
- the tool consists of the upper die 21 and the lower die 22. Between the upper die 21 and the lower die 22, the originally disc-shaped blade blank 1 is inserted.
- the lower side 5 extending in the first plane YZ1 faces the upper forming die 21 and the upper side 6 extending in the second plane YZ2 faces the lower forming die 22.
- the upper forming die 21 has three calibration pegs 23 which engage in the three openings 2 of the blade blank 1.
- the area 4 of the blade blank 1 surrounding the opening 2 is deformed to the upper contact surface 7 surrounding the opening 2 in the third plane YZ3.
- the opening 2 receives its target cross-sectional area, which is greater than a cross-sectional area of the opening 2 before the forming step.
- the edge area 10 ⁇ m the opening 2 around on the underside 5 of the blade blank 1 is arranged in the normal direction X between the first plane YZ1 and the second plane YZ2, while the lower contact surface 8 is formed around the opening 2 on the underside 5 of the blade blank 1.
- the lower contact surface 8 is arranged around the edge region 10 in the first plane YZ1.
- the upper die 21 has a shoulder 24 surrounding the calibration pin 23, which interacts with an annular recess 25 on the lower die 22 to deform the area 4 around the opening 2 of the blade blank 1 in a pressing process.
- the blade blank 1 is shaped in such a way that the material thickness of the knife blade is at least partially smaller than the fleas Fl of the knife blade, which corresponds to the distance between the first plane YZ1 and the third plane YZ3 in the normal direction X.
- further shaping work steps can be provided after the reshaping step in order to produce the final shape of the knife blade. However, these do not relate to the lowering position of the upper contact surface 7 in the third plane YZ3 and the lower contact surface 8 is in the first plane YZ1.
- FIGS. 11 a, 11 b and 11 c show various views in FIGS. 11 a, 11 b and 11 c.
- FIG. 11 a shows a top view with a view of the underside 5, while FIGS. 11 b and 11 c each show perspective views.
- FIG. 11 b shows the knife blade with a view of the bottom 5 with the lower contact surface 8 while
- FIG. 11 c shows the knife blade with a view of the top 6 with the upper contact surface 7
- the knife blade according to FIGS. 11 a, 11 b and 11 c is, with regard to the design of the upper contact surface 7 and the lower contact surface 8, a reversed variant of the knife blade according to FIGS.
- FIG. 12a shows a section of the knife blade through the openings 2 along the line AA in FIG. 11a.
- FIG. 12b shows a longitudinal section of the knife blade along the line BB in FIG. 11a.
- the lower contact surface 8 extends in the first plane YZ1 and that the upper contact surface 8 extends in the third plane YZ3.
- the third plane YZ3 and the first plane YZ1 are parallel to each other aligned.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Knives (AREA)
- Harvester Elements (AREA)
- Threshing Machine Elements (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Forging (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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CN202080076137.9A CN114980726B (zh) | 2019-10-29 | 2020-10-27 | 制造用于切割刀的刀片的方法和切割刀 |
EP20800061.2A EP4050983A1 (de) | 2019-10-29 | 2020-10-27 | Verfahren zur herstellung einer messerklinge und messerklinge |
BR112022007422A BR112022007422A2 (pt) | 2019-10-29 | 2020-10-27 | Processo para produção de uma lâmina de cortador e lâmina de cortador |
US17/772,387 US20220386524A1 (en) | 2019-10-29 | 2020-10-27 | Method of manufacturing a knife blade for a cutter knife and cutter knife |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102019129219.0 | 2019-10-29 | ||
DE102019129219.0A DE102019129219A1 (de) | 2019-10-29 | 2019-10-29 | Verfahren zur Herstellung einer Messerklinge und Messerklinge |
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WO2021083875A1 true WO2021083875A1 (de) | 2021-05-06 |
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PCT/EP2020/080151 WO2021083875A1 (de) | 2019-10-29 | 2020-10-27 | Verfahren zur herstellung einer messerklinge und messerklinge |
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US (1) | US20220386524A1 (de) |
EP (1) | EP4050983A1 (de) |
CN (1) | CN114980726B (de) |
AR (1) | AR120344A1 (de) |
BR (1) | BR112022007422A2 (de) |
DE (1) | DE102019129219A1 (de) |
WO (1) | WO2021083875A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20210161069A1 (en) * | 2018-06-04 | 2021-06-03 | Deere & Company | Crop cutting knives for agricultural combine harvester |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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DE1582404A1 (de) * | 1967-04-20 | 1970-04-30 | Josef Skorpik | Maehmaschinenmesser |
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DE3813353A1 (de) * | 1988-04-21 | 1989-11-02 | Busatis Werke Kg | Verfahren zur herstellung von schneidmessern, wie messerklingen fuer maehschneidwerke |
DE102017112444A1 (de) * | 2016-06-03 | 2017-12-07 | ESM Ennepetaler Schneid- u. Mähtechnik GmbH & Co. KG | Schneidelement für oszillierende Doppelmesser-Schneidsysteme |
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CA2185118A1 (en) * | 1994-03-17 | 1995-09-21 | Nicolae Neamtu | Razor blade manufacture |
CA2756834C (en) * | 2009-04-15 | 2017-07-04 | Bic-Violex Sa | Razor cartridge and mechanical razor comprising such a cartridge |
EP2713691B1 (de) * | 2011-05-27 | 2016-05-18 | CNH Industrial Belgium nv | Niedrigprofil-sichelantrieb mit schwenkwirkung |
ES2530210T3 (es) * | 2011-09-30 | 2015-02-27 | Erfindergemeinschaft Gustav Und Fred Schumacher Gbr | Disposición de dedos de segado |
ITBS20130073A1 (it) * | 2013-05-21 | 2014-11-22 | B E 4 S R L | Lama da taglio e suo metodo di realizzazione |
EP2886232B1 (de) * | 2013-12-20 | 2016-03-16 | Seco Tools Ab | Schneideinsätze mit Querbohrungen und Grünkörper sowie Verfahren zur Herstellung solcher Schneideinsätze und Grünkörper |
CN204217456U (zh) * | 2014-09-23 | 2015-03-25 | 山东梁山亨通机械制造有限公司 | 收割机切割器用刀片 |
US10973170B2 (en) * | 2016-10-14 | 2021-04-13 | Deere & Company | Cutter assembly with knife guard and knife guard holder |
-
2019
- 2019-10-29 DE DE102019129219.0A patent/DE102019129219A1/de active Pending
-
2020
- 2020-10-27 BR BR112022007422A patent/BR112022007422A2/pt unknown
- 2020-10-27 CN CN202080076137.9A patent/CN114980726B/zh active Active
- 2020-10-27 US US17/772,387 patent/US20220386524A1/en active Pending
- 2020-10-27 EP EP20800061.2A patent/EP4050983A1/de active Pending
- 2020-10-27 WO PCT/EP2020/080151 patent/WO2021083875A1/de unknown
- 2020-10-29 AR ARP200102999A patent/AR120344A1/es active IP Right Grant
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DE1582404A1 (de) * | 1967-04-20 | 1970-04-30 | Josef Skorpik | Maehmaschinenmesser |
US4223514A (en) | 1979-03-20 | 1980-09-23 | Sperry Corporation | Knife section |
DE3813353A1 (de) * | 1988-04-21 | 1989-11-02 | Busatis Werke Kg | Verfahren zur herstellung von schneidmessern, wie messerklingen fuer maehschneidwerke |
DE102017112444A1 (de) * | 2016-06-03 | 2017-12-07 | ESM Ennepetaler Schneid- u. Mähtechnik GmbH & Co. KG | Schneidelement für oszillierende Doppelmesser-Schneidsysteme |
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US20210161069A1 (en) * | 2018-06-04 | 2021-06-03 | Deere & Company | Crop cutting knives for agricultural combine harvester |
US11744173B2 (en) * | 2018-06-04 | 2023-09-05 | Deere & Company | Crop cutting knives for agricultural combine harvester |
Also Published As
Publication number | Publication date |
---|---|
CN114980726A (zh) | 2022-08-30 |
DE102019129219A1 (de) | 2021-04-29 |
BR112022007422A2 (pt) | 2022-07-12 |
CN114980726B (zh) | 2024-10-22 |
AR120344A1 (es) | 2022-02-09 |
US20220386524A1 (en) | 2022-12-08 |
EP4050983A1 (de) | 2022-09-07 |
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