EP4616089A1 - Zahnrad, verfahren zum herstellen eines zahnrads sowie verwendung eines derartigen zahnrads - Google Patents
Zahnrad, verfahren zum herstellen eines zahnrads sowie verwendung eines derartigen zahnradsInfo
- Publication number
- EP4616089A1 EP4616089A1 EP23802245.3A EP23802245A EP4616089A1 EP 4616089 A1 EP4616089 A1 EP 4616089A1 EP 23802245 A EP23802245 A EP 23802245A EP 4616089 A1 EP4616089 A1 EP 4616089A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gear
- hub
- rim
- equal
- gear hub
- 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
Links
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/12—Toothed members; Worms with body or rim assembled out of detachable parts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
- F16H1/04—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members
- F16H1/06—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with parallel axes
- F16H1/08—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with parallel axes the members having helical, herringbone, or like teeth
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/06—Use of materials; Use of treatments of toothed members or worms to affect their intrinsic material properties
Definitions
- the invention relates to a gear with a pitch circle diameter of greater than or equal to 1.5 m.
- the invention further relates to a method for producing a gear with a pitch circle diameter of greater than or equal to 1.5 m.
- the invention also relates to a use of a gear.
- Generic gears are known from the prior art. As a rule, gears of this dimension are designed as cast parts with teeth machined on the circumference.
- the invention is based on the object of providing an improvement or an alternative to the prior art.
- the object underlying the present invention is solved by a gear with the features of claim 1.
- the object is achieved according to a first aspect of the invention by a gear with a pitch diameter of Page 2/35 P80726WO greater than or equal to 1.5 m with a gear hub and a gear rim, the gear being characterized in that the gear hub and the gear rim are detachably connected to one another and the gear hub consists of a plurality of elements welded together.
- a two-part gear is proposed here, the gear hub of which is based on a welded construction.
- the inventive design of the present gear enables particularly cost-effective production of even larger gears with a pitch diameter of 1.5 m or larger.
- gears of this type are generally subjected to high levels of wear and tear in press and/or punching devices of this type, which on the one hand significantly reduces their operating times with regard to external peripheral gearing and/or on the other hand often causes irreparable damage to their external peripheral gearing due to critical load peaks.
- critical load peaks often occur on press and/or punching devices in the form of shock loads in connection with pressing and/or punching operations and ultimately affect the gears of the drives of such press and/or punching devices.
- gears dimensioned in this way usually have larger tolerances with regard to their outer peripheral toothing, in particular tolerances in the shape of the toothing of several tenths of a millimeter.
- the present separately manufactured gear rims can, however, be manufactured with much smaller tolerances, whereby peak loads can be further advantageously reduced or better absorbed due to the resulting lower play compared to counter gears.
- the gear according to the invention can be used particularly advantageously in particular on a press and/or punching device in order to be able to use the effects and advantages explained here on such a press and/or punching device.
- the invention also relates to a press and/or punching device for pressing or punching, in particular, metallic semi-finished products and/or semi-finished products made of non-ferrous metals, such as slabs, billets, forged blanks or the like, with a drive device and a ram part driven thereby, wherein the press and/or punching device is specifically characterized by a gear according to one of the features described here. It is understood that the present invention can be applied particularly advantageously to gears with a pitch circle diameter of greater than or equal to 2.0 m, 2.5 m, 2.8 m and 3 m.
- the gear wheel preferably has a pitch circle diameter of greater than or equal to 3.5 m, preferably greater than or equal to 4.0 m and particularly preferably greater than or equal to 4.5 m.
- the gear wheel preferably has a pitch circle diameter of greater than or equal to 5.0 m, further preferably a pitch circle diameter of greater than or equal to 5.5 m, Page 4/35 P80726WO preferably greater than or equal to 6.0 m and particularly preferably greater than or equal to 6.5 m.
- Generic gears with such dimensioned pitch circle diameters are often manufactured as one-piece cast constructions, with an external peripheral toothing then being manufactured by means of machining material removal.
- the gear preferably has a pitch circle diameter of less than or equal to 7.0 m, further preferably a pitch circle diameter of less than or equal to 6.0 m, preferably a pitch circle diameter of less than or equal to 5.0 m and particularly preferably a pitch circle diameter of less than or equal to 4.0 m or less or a pitch circle diameter of less than or equal to 3.0 m.
- the gear design proposed here in particular with regard to the welded design of the gear hub, can reduce the overall CO 2 emissions associated with the production of the gear.
- gear hub in the sense of the invention describes any structural areas of the gear or components thereof which are arranged essentially radially further inside the gear rim.
- gear hub is designed as a separate component of the gear in relation to the gear rim and is therefore fixed but detachably attached to the gear rim.
- the gear hub can be designed in different ways, although only initial options for the design of the gear hub are mentioned here as examples.
- the gear hub can have different bearing seats on its inner diameter.
- the gear hub can also have a fixed shaft-hub connection, which in turn can be designed in particular as a cylinder press fit and/or cone press fit.
- the gear hub can also be provided for a positive shaft-hub connection, in particular for a connection by means of a feather key, cylindrical pin, wedge, expansion dowel connection and/or the like.
- the term "gear rim” describes an annular component of the gear according to the invention, which is arranged as a separate component essentially radially further out on the gear hub, fixed but detachable.
- the gear rim is preferably designed as a closed, circumferential ring component, which, among other things, can significantly improve the dimensional stability of the gear rim.
- the gear hub and the gear rim are connected to one another in a fixed but detachable manner. This makes it possible to repair the gear at low cost, for example by removing a worn or damaged gear ring from the gear hub and replacing it with a new or refurbished gear ring. In other words, this means that the gear hub and the gear ring have a reversible connection to one another. This means that the gear hub and the gear ring can not only be easily joined together in terms of construction, but can also be separated from one another again.
- the gear hub and the gear ring can be separated from one another without causing any damage, so that the gear hub and/or the gear ring can be reused if in doubt.
- Page 7/35 P80726WO can, for example, after a repair, maintenance and/or modernization.
- the gear has a connecting device by means of which the gear hub and the gear rim can be firmly but detachably connected to one another.
- This connecting device is preferably different from a material connection between the gear hub and the gear rim, which significantly increases the chances of a non-destructive removal of the connection between the gear hub and the gear rim.
- Frictional or force-locking connections as well as form-locking connections are advantageous here, since in the sense of the invention they can work well between the gear hub and the gear rim on the one hand and can also be easily removed again on the other.
- the connecting device can be designed in different ways.
- the connecting device preferably comprises a large number of connecting elements which enable a reversible connection between the gear hub and the gear rim. It is advantageous if the connecting elements can be removed without causing any damage. This allows the gear hub and gear rim to be separated quickly. Ideally, the connecting elements can be reused at least in part, which can further reduce costs.
- the gear wheel in question can be constructed in a modular manner due to the design separation of the gear hub and gear rim.
- the gear hub can equip the gear hub with differently designed gear rims.
- identical or similarly designed gear hubs can be manufactured industrially in a first production step and, in a further production step, equipped or connected to a gear rim which has a desired or required toothing.
- Page 9/35 P80726WO Herringbone gearing promotes particularly smooth running and/or self-centering with regard to meshing tooth elements.
- Double helical gearing for example, is cheaper to produce and also has a self-centering effect.
- Such double helical gearing can be viewed as a two-part gearing or herringbone gearing in which the "tip of the arrow" is missing.
- Straight gearing for example, is even cheaper to produce.
- the gear hub can easily be equipped with a wide variety of gear rims, which in turn are characterized by different gearings.
- a favorable design variant provides that the elements of the gear hub comprise a structural steel in accordance with DIN EN 10025, preferably an S235 structural steel and particularly preferably an S355 structural steel, in particular a fine-grain structural steel in accordance with DIN EN 10025, preferably an S460.
- a structural steel in accordance with DIN EN 10025 is particularly favorable and in this respect the manufacturing costs of the gear, in particular the gear hub, can be further reduced.
- the gear hub is preferably made from an S235 structural steel, at least predominantly. As a rule, an S235 structural steel is very readily available and can still be obtained relatively inexpensively.
- Page 10/35 P80726WO The gear hub is particularly preferably made from S355 structural steel, at least predominantly.
- S355 structural steel has more advantageous material properties, which can have a positive effect on the use of the gear in question.
- Fine-grain structural steels can also be used to manufacture the gear hub.
- fine-grain structural steel in accordance with DIN EN 10025 has good welding properties.
- Fine-grain structural steel of grade S460 can preferably be used here, as this fine-grain structural steel is also readily available.
- other materials are also suitable for manufacturing the gear hub in question.
- a 25CrNiMo6 tempering steel has very good strength and is nevertheless easy to weld.
- the gear rim can also be made from a wide variety of materials.
- the gear rim is made from a tempering steel in accordance with DIN EN 10083 or from a case hardening steel in accordance with DIN EN 10084 or from a nitriding steel in accordance with DIN EN 10085. If the gear rim is made from a tempering steel in accordance with DIN EN 10083, the gear rim can be characterized by good strength. With a case hardening steel in accordance with DIN EN 10084, the gear rim can be given improved wear resistance. Page 11/35 P80726WO An even further improved surface hardness can be achieved on the gear rim with a nitriding steel in accordance with DIN EN 10085.
- components made of case-hardening steels or nitriding steels are also characterized by a tougher "component core” and a harder “component surface”.
- the gear rim has a chromium content of greater than or equal to 1.05%, preferably a chromium content of greater than or equal to 1.1% and particularly preferably a chromium content of greater than or equal to 1.3%. Chromium content in a steel material results in chromium carbides, which in turn result in greater hardness, which can achieve improved wear resistance on the one hand and higher temperature resistance on the other.
- a gear rim with a chromium content of greater than or equal to 1.05% can be realized, for example, using the material 25CrMo4.
- a gear rim with a chromium content of greater than or equal to 1.1% can be achieved using the material 42CrMo4.
- a chromium content of greater than or equal to 1.3% can be achieved on the gear rim, which gives the gear rim, for example, very good surface strength.
- the gear rim has a manganese content Page 12/35 P80726WO of greater than or equal to 0.5%, preferably a manganese content of greater than or equal to 0.7% and particularly preferably a manganese content of greater than or equal to 0.75%.
- the alloy component manganese not only improves forgeability, but also weldability, strength in general and wear resistance. In addition, the alloy component manganese reduces the tendency of a correspondingly alloyed steel to red fracture. Good weldability is particularly advantageous with regard to repair welds.
- the material 34CrNiMo6 can be used to provide a gear ring with a manganese content of greater than or equal to 0.5%.
- a manganese content of greater than or equal to 0.7% in the gear ring can be achieved using the material 25CrMo4.
- a manganese content of greater than or equal to 0.77% in the gear ring can, for example, be achieved using the material 42CrMo4.
- the gear hub and the gear rim of the present gear can be easily made from different materials.
- the gear in particular its gear hub, can advantageously be connected to other components if the gear hub Page 13/35 P80726WO has a clutch receptacle, in particular a clutch receptacle designed as a turned flat surface, the clutch receptacle preferably having a bolt circle. If the gear hub has a clutch receptacle designed as a turned flat surface, the gear as a whole can be equipped with a particularly precise seating surface. If the clutch receptacle also has a bolt circle, the clutch receptacle can advantageously be arranged on other components of the gear hub. It is advantageous here if a cast clutch housing can usually be screwed on, with a counter surface for a friction pairing of a clutch then being formed in the clutch housing, for example.
- the friction pairing is usually designed to be radially symmetrical. Alternatively, an turned surface can also be provided, which can form a corresponding friction pairing directly with a clutch disk.
- the gear hub has at least one flank with a material thickness of greater than or equal to 15 mm, preferably greater than or equal to 20 mm, particularly preferably greater than or equal to 30 mm.
- the gear hub has at least one flank with a material thickness of greater than or equal to 25 mm, preferably a material thickness of greater than or equal to 35 mm and particularly preferably a material thickness of greater than or equal to 45 mm.
- a gear hub is also possible as a single-stage thick-walled steel sheet design with a protruding wall thickness of a Page 14/35 P80726WO flank is possible, whereby a base body does not have a box-shaped design, but only consists of one flank.
- a base body of the gear hub is welded as a box.
- the gear hub preferably has a frame part welded together in a box-like manner.
- the gear hub produced in this way can have a first and a second disk-shaped flank as well as internal ribs for connecting these flanks.
- a first, thicker flank of the flanks can serve as a contact surface for a clutch housing or, for example, for a direct clutch friction pairing.
- a second flank (usually the thinner flank) of the flanks can also typically have circular holes or other shaped recesses through which access to the inside of the box is provided, for example to create the weld seams.
- the gear rim is shrunk onto the gear hub, a frictional connection between the gear rim and the gear hub can be created in a simple structural manner.
- Such a press fit offers an extremely robust solution for attaching the gear rim to the gear hub. This can, for example, counteract any distortion of the gear rim, particularly the tipping of one side of the gear rim, in particular by providing rigidity in this area from the gear hub.
- a connection between the gear hub and the gear rim can be made even more stable if the gear hub and the gear rim are connected to one another by means of at least one fitting bolt, preferably with at least three fitting bolts and particularly preferably with at least five fitting bolts.
- the connection between the gear rim and the gear hub preferably has more than or equal to seven fitting bolts, preferably more than or equal to 11 fitting bolts and particularly preferably more than or equal to 15 fitting bolts.
- fitting bolt in the sense of the invention describes an elongated bolt element with both a relatively thick and a relatively short body. Generic fitting bolts are often also referred to as fitting pins or the like.
- Fitting bolts of this type are known from the prior art and are therefore not described in more detail here with regard to their structural design and function.
- the gear rim can be particularly well secured to the gear hub if the gear rim has a shoulder in an inwardly directed area, the gear hub and the gear rim being connected to one another in operative connection with the shoulder by means of at least one expansion screw, preferably with at least three expansion screws and particularly preferably with at least five expansion screws.
- the connection between the gear rim and the gear hub has more than or equal to seven expansion screws, preferably more than or equal to 11 expansion screws and particularly preferably more than or equal to 15 expansion screws.
- the shoulder extending radially inward can serve as a support for a screw head of the at least one expansion screw and/or to provide an internal thread and thus to accommodate an external thread of the expansion screw.
- An expansion screw used as a connecting element in the present case has a comparatively long and slim screw area that extends without a thread between a screw head and a screw thread base, whereby a particularly high preload force of the connecting element can be achieved.
- a high pre-tensioning force advantageously leads to a robust connection between the shoulder and the gear hub on the one hand and to a low tendency to loosen on the other.
- a large-area radially acting friction or force connection can advantageously be created over the entire circumferential surface of the gear hub.
- Page 18/35 P80726WO can be provided, whereby a good anti-twisting device can be ensured with regard to the gear rim and the gear hub.
- a cylinder press fit between the gear hub and the gear rim can be joined and/or released by a temperature difference between the gear hub and the gear rim, so that a cylinder press fit is also considered a detachable connection within the scope of this aspect.
- one or more channels can be provided in the gear hub, in particular bores which extend in the direction of the connecting surface between the gear hub and the gear rim and which are designed to exert a radial force on the gear rim by means of a fluid pressure in the channel, so that it can be released from the gear hub.
- a positive connection can advantageously be provided between the gear rim and the gear hub by means of fitting bolts. This means that peak loads acting on the gear rim in particular can be absorbed well and transferred to the gear hub, which also prevents the risk of a frictional or force-locking connection established between the gear rim and the gear hub being overcome and/or slipping due to critical peak loads.
- an advantageous connection device can be implemented on the gear in question using various, ideally complementary, connecting means.
- Page 19/35 P80726WO Another advantageous embodiment provides that the gear has an acceleration sensor. If such an acceleration sensor is set up to detect operating vibrations of the gear, the function or the condition of the gear can be advantageously monitored during operation, virtually "on-the-fly", in particular during operation of press and/or punching devices. Ideally, a check of the gear condition can be carried out inexpensively using commercially available sensors, in particular during a maintenance run when the gear is assembled, for example with regard to a press and/or punching device.
- a frequency density spectrum of the acceleration sensor signal makes it possible to detect whether the gear is damaged or whether a connecting means or a connecting element is no longer working properly, in particular via a corresponding peak in the frequency density spectrum and/or a change in an eigenmode of the gear.
- the object underlying the present invention is further achieved by a method of a gear with the features of claim 13. Advantageous embodiments of the method are described in the claims dependent on claim 13.
- the object is achieved according to a second aspect of the invention by a method for producing a gear with a pitch diameter of greater than or equal to 1.5 m, with a gear hub and with a gear rim, in which the gear hub is produced by means of a welded construction, in which Page 20/35 P80726WO in which the gear rim is produced by means of a closed, circumferential ring part, and in which the gear hub and the gear rim are then firmly but detachably connected to one another by means of a force or frictional connection and/or by means of a fitting bolt connection and/or by means of an expansion screw connection.
- gears of considerable size or with considerably large pitch circle diameters can be produced particularly easily and inexpensively, as already explained many times above. It is particularly advantageous if suitable fitting bolt connections and/or expansion screw connections are arranged between an external toothing of the gear and a friction or force connection, whereby the firm but detachable connection between the gear hub and the gear rim can be implemented particularly compactly on the gear.
- a preferred method variant provides that holes are made in the gear for the fitting bolt connection and/or for the expansion screw connection between the pitch circle of the gear and the friction or force-locking connection.
- the method described can also be supplemented by further technical features described here, in particular by features of the device, in order to advantageously develop it further or to be able to represent or formulate method specifications even more precisely.
- the object underlying the present invention is further achieved by using a gear with the features of claim 15.
- Page 21/35 P80726WO the object is achieved according to a third aspect of the invention by using a gear according to one of the features described here.
- the use of the proposed gear in connection with press and/or punching devices is extremely advantageous, since this can significantly reduce operating and maintenance costs.
- the use of the present gear as a replacement part or spare part is particularly advantageous, since the gear according to the invention represents an extremely inexpensive alternative to an original gear of a processing machine, such as presses and/or punching devices for processing metallic semi-finished products and/or semi-finished products made of non-ferrous metals, in particular for gears with a pitch circle diameter of greater than or equal to 1.5 m and in particular with even larger pitch circle blades, such as 4 m or 5 m.
- a gear rim in particular in the form of a closed ring part for producing the gear on which the invention is based, in particular on a multi-part gear with a pitch circle diameter of greater than or equal to 1.5 m, is also advantageous, since this allows particularly large gears to be produced more cheaply than before, but still robustly.
- the advantage of the circumferentially closed ring part is, among other things, that the gear rim can be positioned much more precisely on the gear hub than, for example, a band-shaped toothing which is placed circumferentially around the gear hub.
- Figure 1 shows a schematic front view of a gear with a gear hub and with a gear rim, the gear hub and the gear rim being firmly but detachably connected to one another;
- Figure 2 shows a schematic first perspective view of the gear shown in Figure 1;
- Figure 3 shows a schematic further perspective view of the gear shown in Figures 1 and 2;
- Figure 4 shows a schematic side view of the gear hub of the gear shown in Figures 1 to 3 without a gear rim;
- Figure 5 schematically shows a first perspective view of the gear rim of the gear shown in Figures 1 to 3 without a gear hub;
- Figure 6 schematically shows a further perspective view of the gear rim shown in Figure 5;
- Figure 7 schematically a sectional partial view of a
- the gear 1 shown in Figures 1 to 3 has a gear hub 2 (see in particular Figure 4) and a gear rim 3 (see in particular Figures 5 and 6), which are detachably but firmly connected to one another.
- the gear 1 is also characterized by a pitch circle diameter 5 of 2 m running in the circumferential direction 4 of the gear 1.
- the gear 1 also has an axis of rotation 6 around which the gear 1 rotates when used properly.
- the gear 1 has an axial extension in the axial direction 8 and a radial extension in the radial directions 9.
- Page 24/35 P80726WO The gear 1 is designed as a cost-effective replacement or exchange part for often very expensive original gears, but it can also be used as an original equipment part of a brand new processing machine.
- the gear hub 2 is designed as a welded construction and comprises a plurality of elements 7 welded together (only generally numbered here), as will be explained in more detail later.
- the gear hub 2 is made of a fine-grain structural steel of grade S460 in terms of its welded construction, while the gear rim 3 is made of 42CrMo4.
- the materials of the gear hub 2 and gear rim 3 can be selected individually depending on the area of application of the gear 1. Because the gear hub 2 and the gear rim 3 are firmly connected to one another in the assembled state, and in this way form the gear 1 as a whole, and the gear hub 2 and the gear rim 3 can also be detached from one another, the gear hub 2 and the gear rim 3 can be manufactured very well in a functionally optimized manner, be it in terms of the most favorable choice of material or the most favorable manufacturing process or the most favorable manufacturing processing, or similar.
- the gear 1 is characterized by a modular design, whereby the gear hub 2 and the gear rim 3 can be selected and assembled depending on the intended area of application of the gear 1.
- the gear hub 2 and the gear rim 3 are designed for use on a forging press 10 (not shown here) and are optimized in such a way that, on the one hand, the gear rim 3 can withstand particularly shock loads well and, on the other hand, the gear hub 2 is reusable if the gear rim 3 has to be replaced due to wear or damage caused by stress.
- the forging press 10 is in turn integrated as a processing station (not numbered again here) in a forging line 11 for processing metallic semi-finished products and/or semi-finished products made of non-ferrous metals, in particular forging blanks.
- the gear 1 is a component of the forging press 10 of a forging line 11.
- the gear 1 belongs to a rolling mill (not shown here).
- the gear hub 2 in this embodiment is characterized by a coupling receptacle 12 with a machined flat surface 13 in order to compensate for any distortion caused by welding processes during the manufacture of the gear hub 2.
- attachments not shown here such as a clutch housing (not shown) or the like, can be attached to the gear hub 2 with a precise fit using the coupling receptacle 12.
- the coupling receptacle 12 also has a hole circle 14, by means of which the coupling receptacle 12 itself can be attached to the gear hub 2.
- the gear hub 2 has a box-like welded frame part 15, which can be clearly seen in particular according to the illustrations in Figures 7 and 8, Page 26/35 P80726WO that the box-like welded frame part 15 has at least a first disk-shaped flank element 15A and a second disk-shaped flank element 15B, which are welded together by means of intermediate rib elements 15C, whereby here ( Figures 7 and 8) only a radially further outward rib element 15C can be seen, which is designed as a ring element 15C at this outer position.
- the coupling receptacle 12 described above is attached to the first disk-shaped flank element 15A, whereas the second disk-shaped flank element 15B primarily serves only to further stiffen the box-like welded frame part 15 and thus also the gear hub 2 as a whole.
- the second disk-shaped flank element 15B also has a smaller component thickness (not explicitly specified) of 25 mm, while the first disk-shaped flank element 15A has a greater component thickness (also not explicitly specified) of 45 mm.
- the second disk-shaped flank element 15B has a large number of recesses 16, which allow easy access to the frame or box interior 17 of the gear hub 2 in order to be able to carry out high-quality welding work there too.
- the gear hub 2 also has a bearing shell part 18 for supporting a shaft part (not shown), so that the gear 1 can rotate about the axis of rotation 6.
- the gear hub 2 has a radial outer peripheral surface 20 further outwards, which is designed as a frictional contact outer surface 21 for supporting the gear rim 3.
- Page 27/35 P80726WO The radial outer circumferential surface 20 in its entirety is formed by the welded elements 7 "first and second disk-shaped flank elements 15A and 15B" and “rib or ring element 15C", while the friction contact outer surface 21 in this exemplary embodiment is only provided by the second disk-shaped flank element 15B and the rib or ring element 15C.
- the gear ring 3 has a circumferentially closed ring part 22, which is designed here as a shrink ring (not separately numbered again).
- the gear ring 3 has a herringbone toothing 25, which is arranged on the radially outer surface of the gear ring 3.
- the gear rim 3 Located radially further inward, the gear rim 3 has an inner frictional contact surface 26, by means of which the gear rim 3 forms a frictional connection with the outer frictional contact surface 21 of the gear hub 2.
- the gear rim 3 has a shoulder 27 arranged radially further inward in relation to the herringbone toothing 25, which extends in the circumferential direction 4 of the gear 1.
- the shoulder 27 essentially has a vertically running contact surface 27A in the form of an inwardly directed area (not numbered again) for axial contact of the first disk-shaped flank part 15A.
- the gear 1 has a multi-acting connecting device 28 in order to detachably but firmly connect the gear hub 2 and the gear rim 3 to one another.
- the multi-acting connecting device 28 comprises a friction or force-locking connection 29 (see in particular Figures 7 and 8), a fitting bolt connection 30 (see in particular Figure 7) and an expansion screw connection 31 (see in particular Figure 8), whereby the three connections 29, 30 and 31 can alternatively also be combined with one another in a different way, depending on the intended use or load-bearing capacity for which the gear 1 is to be used.
- the friction or force-locking connection 29 is characterized in particular by a press-shrink fit 33 comprising the friction contact outer surface 21 on the gear hub 2 on the one hand and the friction contact inner surface 26 of the gear rim 3 on the other hand. According to the illustration in Figure 7, the fitting bolt connection 30 can be clearly seen.
- the fitting bolt connection 30 essentially comprises a blind hole 35 running in the axial direction 8 into the gear rim 3, a through hole 36 running in the axial direction 8 through the first disk-shaped flank element 15A, a fitting bolt 38 seated therein and a fitting bolt loss prevention device 39.
- the expansion screw connection 31 can be clearly seen.
- the expansion screw connection 31 essentially comprises a threaded blind hole 42 running in the axial direction 8 into the gear rim 3, a threaded through hole 43 running in the axial direction 8 through the first disk-shaped flank element 15A, an expansion screw 44 screwed into it and a lock nut part 45.
- fitting bolt connections 30 and expansion screw connections 31 are arranged alternately on the gear 1 as seen along the circumferential direction 4.
- both the fitting bolt connections 30 and the expansion screw connections 31 are arranged between the toothing or the herringbone toothing 25 and the friction or force-locking connection 29, whereby a particularly compact connection device 28 is realized on the gear 1.
- the fitting bolt connections 30 and the expansion screw connections 31 are arranged radially further out than the friction or force-locking connection 29 on the gear 1.
- the gear 1 also has at least one acceleration sensor 46 in order to be able to detect signs of wear or damage to the gear rim 3, in particular to the herringbone toothing 25, at an early stage, before signs of wear or damage prove to be critical.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Gears, Cams (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022129867.1A DE102022129867A1 (de) | 2022-11-11 | 2022-11-11 | Zahnrad, Verfahren zum Herstellen eines Zahnrads sowie Verwendung eines derartigen Zahnrads |
| PCT/EP2023/081114 WO2024100099A1 (de) | 2022-11-11 | 2023-11-08 | Zahnrad, verfahren zum herstellen eines zahnrads sowie verwendung eines derartigen zahnrads |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4616089A1 true EP4616089A1 (de) | 2025-09-17 |
Family
ID=88745799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23802245.3A Pending EP4616089A1 (de) | 2022-11-11 | 2023-11-08 | Zahnrad, verfahren zum herstellen eines zahnrads sowie verwendung eines derartigen zahnrads |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP4616089A1 (de) |
| KR (1) | KR20250070100A (de) |
| DE (1) | DE102022129867A1 (de) |
| MX (1) | MX2025005457A (de) |
| WO (1) | WO2024100099A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118775520A (zh) * | 2024-09-10 | 2024-10-15 | 浙江柏思达齿轮股份有限公司 | 一种半轴齿轮 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1400263A1 (de) * | 1960-10-25 | 1968-10-24 | Demag Ag | Grosses Zahnrad,insbesondere fuer Schraegverzahnung |
| US3439551A (en) * | 1967-09-13 | 1969-04-22 | Frank A Militana | Toothed wheel with replaceable toothed segments |
| DE2218031A1 (de) * | 1972-04-14 | 1973-10-31 | Miag Muehlenbau & Ind Gmbh | Drehrohr mit antriebszahnkranz |
| AU2009101343A4 (en) * | 2008-11-03 | 2011-02-24 | Sew-Eurodrive Gmbh & Co. Kg | Toothed wheel and drum drive |
| DE102011079695A1 (de) * | 2011-07-25 | 2013-01-31 | Zf Friedrichshafen Ag | Zahnrad, insbesondere Planetenrad für ein Planetengetriebe und Drehschwingungsdämpfungsanordnung mit einem derartigen Zahnrad |
-
2022
- 2022-11-11 DE DE102022129867.1A patent/DE102022129867A1/de active Pending
-
2023
- 2023-11-08 KR KR1020257013149A patent/KR20250070100A/ko active Pending
- 2023-11-08 EP EP23802245.3A patent/EP4616089A1/de active Pending
- 2023-11-08 WO PCT/EP2023/081114 patent/WO2024100099A1/de not_active Ceased
-
2025
- 2025-05-09 MX MX2025005457A patent/MX2025005457A/es unknown
Also Published As
| Publication number | Publication date |
|---|---|
| MX2025005457A (es) | 2025-08-01 |
| WO2024100099A1 (de) | 2024-05-16 |
| DE102022129867A1 (de) | 2024-05-16 |
| KR20250070100A (ko) | 2025-05-20 |
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