Installation tool for inserting thrust pieces into a synchronizing device, and method
The assembly tool with a base body, preload ring, and pressure plunger simplifies the insertion of pressure pieces into synchronizing devices, addressing assembly challenges with small components and restricted access, achieving efficient and precise assembly.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- BAYERISCHE MOTOREN WERKE AG
- Filing Date
- 2025-11-13
- Publication Date
- 2026-06-04
Smart Images
Figure DE2025101050_04062026_PF_FP_ABST
Abstract
Description
[0001] 24-0807 PIF
[0002] 1
[0003] Assembly tool for inserting pressure pieces into a synchronizing device and method
[0004] The invention relates to an assembly tool for inserting pressure pieces into a synchronizing device according to claim 1. Furthermore, the invention relates to a method for inserting pressure pieces into a synchronizing device.
[0005] The assembly of pressure pieces in a synchronizing device on the assembly line presents a significant challenge, as these pressure pieces are particularly small components. This makes it difficult to insert them into their designated positions and often leads to delays in the assembly process.
[0006] Furthermore, due to their small size and dimensions, manual handling of the pressure pieces on the assembly line is extremely difficult. Assembly becomes particularly complicated when the synchronizer body is already mounted on its corresponding shaft, as access to the pressure piece installation positions is severely restricted. This also increases assembly time and the likelihood of errors, which can slow down the entire production process.
[0007] EP 1 835 193 A2 discloses a pressure piece for a synchronizer in a gearbox, consisting of a flat, cuboid housing and a spring running transversely to the preload direction. A pressure element of the pressure piece is designed as a detent ball that engages in a recess of the sliding sleeve and is preloaded by the spring. This design enables a compact construction and, in particular, reduces wear, as the pressure element slides easily into the groove of the gear and controls the range of motion of the sliding sleeve.
[0008] The object of the invention is to provide an assembly tool for inserting pressure pieces into a synchronizing device and a method according to the invention for inserting such 24-0807 PIF
[0009] 2
[0010] To provide pressure pieces, enabling particularly simple, quick and efficient assembly as well as requiring little space.
[0011] This problem is solved according to the invention by an assembly tool having the features of claim 1 and by means of a method according to the invention. Advantageous embodiments of the invention are the subject of the dependent claims and the description.
[0012] A first aspect of the invention relates to an assembly tool for inserting pressure pieces into a synchronizing device, by which at least one pressure piece can be inserted into a corresponding axial groove between a gear and a sliding sleeve or a synchronizing sleeve of the synchronizing device. The insertion of the pressure pieces into the synchronizing device is known from the prior art, whereby the pressure pieces are inserted into the respective axial groove between the gear and the sliding sleeve. However, since this insertion is particularly complicated, primarily due to the small size of the components and the difficult accessibility, assembly problems frequently arise. To overcome these difficulties, the invention provides for the use of an assembly tool that enables and facilitates the precise and error-free insertion of the pressure pieces.
[0013] The assembly tool comprises a base body for receiving at least one pressure piece in a corresponding receiving space of the base body. The base body is, for example, ring-shaped and / or solid, made of metal and / or plastic, and is placed onto the gear. In particular, the base body is also ring-shaped or has a ring-shaped design to allow it to be pushed or guided along the shaft. The base body is preferably designed to accommodate three pressure pieces simultaneously in the corresponding axial grooves, thus significantly simplifying and accelerating assembly. The preferably ring-shaped base body therefore has three symmetrically arranged receiving spaces, evenly distributed along its circumference. These receiving spaces are arranged as follows:They are positioned so that they are equidistant from each other, thus enabling an even distribution of the forces or pressure of the assembly tool when the pressure pieces are inserted from the receptacles into the corresponding axial grooves. 24-0807 PIF.
[0014] 3
[0015] The assembly tool also includes a preload ring for preloading at least one pressure piece and for inserting the preloaded pressure piece into the corresponding receiving space. The preload ring is also ring-shaped, for example, made of metal or plastic, and its circumference is essentially the same as that of the base body. Furthermore, the preload ring is flat and fits precisely onto the base body to ensure particularly good force transmission during coaxial rotation relative to the base body and during the insertion of the pressure pieces. The design of the preload ring and the base body shown here enables stable preloading of the pressure pieces and facilitates their insertion into the respective axial grooves.
[0016] Pre-tensioning the pressure piece with the pre-tensioning ring ensures that the pressure piece is inserted into the axial groove under tension, thus correctly positioning it. After insertion, the pressure piece relaxes, allowing for precise positioning of the gear relative to the sliding sleeve. This relaxation ensures that the pressure piece remains firmly in position, correctly aligning and stabilizing the gear and sliding sleeve. This enables, for example, reliable torque transmission, smooth shifting, and / or prevents incorrect engagement.
[0017] Rotating the preload ring simultaneously preloads the pressure pieces by inserting them into the corresponding receiving spaces of the base body. The geometry of these receiving spaces is designed such that the pressure pieces are automatically preloaded upon insertion and secured until they are finally positioned or inserted into the receiving space. The preload ring is designed to hold the pressure pieces stably throughout the entire process, allowing them to be inserted into the respective axial groove between the gear and the sliding sleeve.
[0018] The assembly tool also includes a pressure plunger for linearly inserting the at least one pressure piece from the corresponding receiving space into the corresponding axial groove. This pressure plunger is specifically manufactured from an annular base element and other specific pre-tensionable components that enable the insertion of the at least one pressure piece and do not [24-0807 PIF].
[0019] 4. The pressure die is also manufactured to correspond to the geometry of the pressure piece. Its dimensions are adapted to the preload ring and / or the base body, and it can be positioned relative to the preload ring, precisely fitted onto the preload ring, and is also rotatable coaxially with the base body and / or the preload ring. A mechanical coupling through the specific components of the pressure die ensures that by rotating the pressure die, only the preload ring can be rotated relative to the base body to preload the pressure pieces before they are inserted into the axial grooves by linearly pressing the pressure die. This means that the pressure die is not only intended for inserting the pressure pieces, but can also be used as an aid for rotating the preload ring, e.g.when the preload ring is particularly flat and difficult to grip.
[0020] In other words, the preload ring is first rotated by turning the pressure ram, thereby inserting and preloading the pressure pieces into the receiving chambers. Subsequently, a linear movement or adjustment relative to the base body occurs, during which the pressure ram is pushed downwards, or towards the gear, to precisely insert the preloaded pressure pieces into the axial grooves between the gear and the sliding sleeve. This two-stage movement enables controlled and precise assembly of the pressure pieces, simplifying the process for the assembler.
[0021] Accordingly, the preload ring mounted on the base body is designed to rotate coaxially relative to the base body to accommodate the pressure piece. The base body, with the preload ring attached, can be placed onto the gear, and the pressure plunger can be positioned relative to the preload ring and moved linearly relative to the base body to insert the pressure piece into the axial groove. The geometrically optimized design and precise fit allow for simple, stable, and reliable component placement. The components feature a coordinated geometry that enables precise, easy, and quick assembly, thus facilitating preloading and subsequent insertion of the pressure pieces.
[0022] Thus, the base body and / or the preload ring and / or the pressure plunger for inserting the pressure piece are designed to rotate coaxially relative to the gear. They comprise 24-0807 PIF.
[0023] Five shaft openings, each through which the shaft of the synchronizing device can pass, and which have the most precise possible fit to the shaft. This ensures that all components are not only precisely matched to each other, but can also rotate around a common axis, allowing for particularly simple and precise assembly.
[0024] The base body is placed onto the gear and positioned accordingly. The pressure pieces are inserted into the receiving chamber and guided into the receiving spaces by the preload ring, where they are preloaded. The pressure ram is then positioned on the preload ring, and the respective pressure pieces are pushed into the axial grooves of the gear and secured by linear pressure.
[0025] In other words, the assembly tool is designed for inserting pressure pieces into the corresponding synchronizer, thus ensuring proper synchronization in a manual transmission. The pressure pieces are responsible for holding the gear and sliding sleeve in the correct position, enabling smooth shifting. Correct placement and positioning of the pressure piece minimizes wear and / or noise during operation. An incorrectly placed, poorly positioned, or loose pressure piece could lead to inaccurate shifting, increased component wear, and / or noise. Furthermore, a securely seated pressure piece contributes to torque transmission and ensures smooth gear engagement, which also extends the transmission's lifespan.
[0026] In an advantageous embodiment of the invention, the base body has at least one opening arranged on its outer circumference for receiving the at least one pressure piece in the corresponding receiving space. The preferably rectangular pressure piece is inserted into the opening through one of its narrow sides in its longitudinal direction. This opening is precisely shaped to fit the lateral geometry of the pressure piece, thus enabling easy insertion and ensuring only one insertion method, thereby preventing incorrect insertion. The pressure piece is then guided into the corresponding receiving space and pre-tensioned accordingly by means of the pre-tensioning ring. The respective openings are arranged around the outer circumference of the base body, thus facilitating the insertion of the respective pressure pieces. 24-0807 PIF
[0027] 6
[0028] In an advantageous embodiment of the invention, a conduit is provided from the opening to the receiving chamber for the linear displacement of at least one pressure piece into the receiving chamber. This conduit is necessary when the receiving chamber is not located directly behind the opening, so that the pressure piece is guided from the opening through the conduit into the receiving chamber, which can be accomplished with the aid of the preload ring. The opening can be designed to be large enough to allow the pressure piece to be inserted initially without preload, where it is partially held. The preload ring then guides the pressure piece into the conduit with its smaller cross-section, thereby preloading it, for example, by means of a tapered geometry of the conduit. Once the pressure piece is preloaded, it enters the receiving chamber.The guide thus enables the linear displacement of the pressure piece, particularly along a plane, with the path of movement extending from the opening around the axis. This allows the receiving chamber, located closer to the axis and further inward within the base body, to accommodate the pressure piece, which is guided further inward by the described guide. The guide can also be open at the top to allow the insertion of a sliding element designed to push or guide the pressure piece. This facilitates easy handling, as the sliding element has direct access to the pressure piece, which can then be pre-tensioned by the guide and guided into the receiving chamber. In this way, the pressure piece is moved in a controlled manner and brought into the correct position.
[0029] It is also possible to incorporate a locking mechanism that allows insertion into the axial grooves only after all three pressure pieces have been received. In this case, secondary receiving chambers are arranged behind the primary receiving chambers, i.e., between the receiving chambers and the axis. These secondary receiving chambers contain, for example, spring elements. These spring elements push a locking element back and forth through a passage between the receiving chambers to lock and pre-tension the pressure pieces in the receiving chambers until they are inserted into the axial grooves. Finally, for example, the pressure pieces can only be released from the receiving chamber into the axial groove once all pressure pieces are held by their respective locking elements.This ensures that the printed pieces are only released and moved into their final position once they are securely and correctly locked, providing more accurate function and positioning. 24-0807 PIF.
[0030] 7
[0031] In a further advantageous embodiment of the invention, a corresponding positioning lug is arranged in the receiving chamber. This positioning lug is designed to be placed over the coaxial groove and thus positions the base body precisely relative to the gear, so that the pressure pieces can be inserted exactly into the axial groove and thus installed. This positioning lug is therefore arranged between the receiving chamber and the axial groove and is, for example, formed integrally with the base body. The positioning lug includes a through-opening through which the pressure piece is inserted into the axial groove by means of the pressure plunger. Furthermore, the positioning lugs include, for example,also tips which can be snapped or locked between the teeth of the gear, thus enabling a fixed positioning when placing the base body on the gear, in order to subsequently insert or insert the pressure piece into the axial groove.
[0032] In a further advantageous embodiment of the invention, a through-opening for inserting the at least one pressure piece into the axial groove is provided in the receiving chamber. This through-opening is geometrically adapted or designed in such a way that it maintains the pre-tensioned state of the pressure piece while it is being inserted. The through-opening is positioned or arranged between the receiving chamber and the axial groove, thus enabling simple and precise positioning of the pressure piece when inserting it into the axial groove, while the base body also remains correctly positioned.
[0033] In a further advantageous embodiment of the invention, the base body has at least one guide groove for positioning the preload ring relative to the base body. This guide groove is aligned around the axis and arranged on the inside of the base body. It is therefore located closer to the axis and has a smaller circumference than the outer circumference of the base body, thus enabling precise guidance of a guide element of the preload ring. This allows the pressure pieces to be pushed along the lines, preloaded, and inserted into the receiving spaces by means of sliding elements arranged on the preload ring. The guide groove(s) are designed to be long enough to allow or cover the required rotational path of the preload ring in order to insert the pressure piece into or the 24-0807 PIF
[0034] 8
[0035] To introduce pressure pieces into the respective recording room(s) under preload.
[0036] In a further advantageous embodiment of the invention, the preload ring comprises at least one guide element for positioning relative to the base body. The aforementioned guide groove for guiding the preload ring relative to the base body is applicable for this purpose. The preload ring thus includes a guide element aligned with the axis of the base body, for example, an arm extending parallel to the axis, which can be inserted into the guide groove. The guide element, whose diameter corresponds to the side walls of the guide groove, is inserted into this groove. Upon contact with the respective ends of the guide groove, the rotation of the preload ring is limited to prevent over-pressing of the pressure piece, for example, against a wall in the receiving space, and thus damage.
[0037] In a further advantageous embodiment of the invention, the preload ring has at least one through-opening for positioning the pressure plunger relative to the preload ring and / or relative to the base body. Since the pressure plunger is moved or pressed linearly in the direction of the gear to insert the pressure piece into the axial groove, the preload ring includes a through-opening through which a base element of the pressure plunger or an alternative component can be guided. After the pressure pieces are preloaded and / or positioned, the pressure plunger is pressed so that the base element pushes the pressure piece through the through-opening into the axial groove and inserts it correctly. The base element or the alternative component of the pressure plunger has, in particular, an external geometry that is precisely matched to the cross-section of the through-opening.This precise geometry ensures that the base element or alternative component is guided almost exactly through the opening, allowing the pressure piece to be inserted correctly and, in particular, without play or high tolerances into the axial groove. This enables precise force transmission and prevents misplacement or misalignment and / or damage, especially to the pressure pieces when inserted into the axial groove.
[0038] In a further advantageous embodiment of the invention, it is provided that the preload ring has at least one sliding element for rotating the preload ring and thus for preloading and / or sliding the at least one pressure piece into the 24-0807 PIF
[0039] 9
[0040] The receiving chamber is characterized by its sliding element, which is designed to insert the pressure piece through the opening into the conduit, which tapers at least partially. For this purpose, the conduit is open towards the preload ring and has a larger cross-sectional opening than the outlet. This taper creates a preload as the pressure piece is advanced until it enters or passes through the receiving chamber. Due to the aforementioned guide groove and the limited rotation of the preload ring, the pressure piece is advanced precisely to the receiving chamber and is not pressed further against an inner wall of the receiving chamber. The sliding element may, for example, have a rounded surface oriented towards the pressure piece to at least partially protect the particularly sensitive pressure piece during insertion, passage, and tensioning.This rounded design also minimizes the risk of damage to the pressure piece during the sliding process and thus enables smooth and gentle adjustment into the receiving space without causing pressure marks or deformations.
[0041] In a further advantageous embodiment of the invention, the pressure ram has at least one foot element for inserting the at least one pressure piece into the corresponding axial groove. The foot element is elongated and axially aligned with the axis of rotation. It is further designed to push the corresponding pressure piece from the receiving chamber through the through-opening into the axial groove and insert it accordingly. The foot element is precisely fitted to the through-opening in the preload ring to enable accurate insertion and is also precisely fitted to the through-opening of the receiving chamber to allow not only the pressure piece but also the foot element to pass through. The length of the foot element is designed and dimensioned such that the pressure piece is inserted precisely into the axial groove without being forced over.The length must be sufficient to guide through the preload ring and the base body and to insert the pressure piece as precisely as possible into the axial groove.
[0042] In a further advantageous embodiment of the invention, the at least one foot element can be passed through the through-opening of the preload ring and through the through-opening of the base element. As mentioned above, this arrangement makes it possible to position the foot element precisely and to push the pressure piece from the receiving tube directly through the through-opening into the axial groove. 24-0807 PIF
[0043] 10
[0044] This ensures that the pressure piece is inserted precisely into the groove without slipping or being forced over. The fit of the two through-holes is designed so that the foot element can be guided through while maintaining precise alignment. In particular, a simple pushing motion or a linear adjustment of the pressure plunger towards the gear should be sufficient to insert at least one pressure piece accurately into the axial groove. The proposed design thus allows the foot element to be reliably guided through the two through-holes by the linear movement of the pressure plunger, enabling the pressure piece to be inserted or positioned directly and cleanly in the corresponding axial groove without additional steps or complex movements.
[0045] In an advantageous embodiment of the invention, the at least one foot element has a pressing element at a foot end oriented towards the at least one pressure piece. The pressing element has, for example, a geometry corresponding to the at least one pressure piece. Here, for instance, a pressing element could also be arranged that forms the end of the foot element. For example, this pressing element could be designed as a stamp and be manufactured directly as a single piece with the foot element.The geometry could, for example, be represented by a form-fitting base element such as a stamp, or be directly integrated with the base element. This corresponding geometry thus encompasses the shape of the pressure piece or the side of the pressure piece facing the base element, thereby distributing the pressure force evenly to this side to prevent, for example, tilting or damage to the pressure piece. Additionally, an elastic and / or deformable base element could be arranged at the end of the foot, which adapts flexibly to the pressure piece and thus also ensures a gentle insertion process.
[0046] In a further advantageous embodiment of the invention, the pressure ram has at least one rotating element for rotating the preload ring and / or the base body. In this case, the preload ring does not need to be rotated separately, but is rotated by the rotation of the pressure ram via the rotating element. This means that after assembly or setup of the tool, only the rotation of the pressure ram and the linear adjustment are necessary to insert the pressure piece into the axial groove. This simplifies the assembly of the respective pressure piece and thus also reduces the effort during the assembly process. 24-0807 PIF
[0047] 11
[0048] In a further advantageous embodiment of the invention, the base body and / or the preload ring each have at least one recess arranged on its outer circumference for receiving the rotating element of the pressure ram. The base body and the preload ring are assembled to guide the pressure piece into the receiving space. In the assembled position, the respective recesses are arranged one above the other, so that the rotating element can be guided along both recesses, particularly relative to the base body or, in the position mounted on the gear, relative to the gear. Even when the pressure ram is used to rotate the preload ring relative to the base body, the pressure ram can be utilized by engaging the rotating elements in the recesses of the preload ring and rotating it.These recesses are milled or machined into the outer circumference and shaped accordingly to precisely accommodate the rotating element. The rotating element is inserted axially into the recesses and has a geometry that fits precisely into the outer circumference of the preload ring and base body. This results in a particularly smooth, round surface that does not compromise the round shape of the assembly tool. Once the base body is placed on the gear and the preload ring is positioned on the base body, the preload ring and the pressure plunger, which are coupled with their respective recesses and through-holes, are used to preload and advance the pressure pieces into the receiving space.This is made possible by the precise fit of the rotating elements in the recesses, whereby the pressure stamp is then rotated until the rotating elements engage in the recesses of the base body. The pressure stamp is then pushed further towards the gear to insert the pressure pieces precisely into the axial groove through the foot element from the receiving chamber and through the passage opening.
[0049] Another aspect of the invention relates to a method for inserting pressure pieces into a synchronizing device using an assembly tool, in which at least one pressure piece is inserted into a corresponding axial groove between a gear and a sliding sleeve of the synchronizing device. It is provided that the pressure piece is inserted into a corresponding receiving chamber. Furthermore, it is provided that the pressure piece is pre-tensioned by means of a pre-tensioning ring and inserted into the corresponding receiving chamber. It is also provided that the pressure piece is moved from the corresponding receiving chamber into the 24-0807 PIF
[0050] The corresponding axial groove is inserted by means of a pressure plunger. It is also provided that the base body is placed on the gear, the preload ring is placed on the base body, and the pressure plunger is placed on the preload ring. Finally, it is provided that the base body and / or the preload ring and / or the pressure plunger are rotated coaxially relative to the gear, and in particular also coaxially to the shaft of the synchronizing device, to insert the at least one pressure piece.
[0051] In other words, the method proposes a simple or simplified assembly of pressure pieces in a synchronizing device. First, the pressure piece is positioned in the receiving chamber of the base body and preloaded by the preload ring. The coaxial positioning of the tool relative to the gear ensures that all pressure pieces are inserted precisely and easily into the corresponding axial grooves. This results in particularly fast, repeatable, and accurate assembly, where the respective pressure pieces are inserted precisely into the corresponding axial grooves. The advantages of this method include, in particular, a reduction in assembly errors, time savings, and an increased service life of the respective components.
[0052] Further features of the invention will become apparent from the claims, the figures, and the description of the figures. The features and combinations of features mentioned above in the description, as well as the features and combinations of features mentioned below in the description of the figures and / or shown in the figures alone, are not only usable in the combinations specified, but also in other combinations or on their own.
[0053] The invention will now be explained in more detail with reference to a preferred embodiment and the drawings. The drawings show:
[0054] Fig. 1 shows a top view of a synchronizing device according to the state of the art.
[0055] Technology;
[0056] Fig. 2 shows a perspective view of an assembly tool for inserting
[0057] Pressure pieces into the synchronization device;
[0058] Fig. 3 a perspective view of a basic body of the assembly tool; 24-0807 PIF
[0059] 13
[0060] Fig. 4 shows a perspective view of a preload ring of the assembly tool;
[0061] Fig. 5 shows a perspective view of a die of the assembly tool;
[0062] Fig. 6 shows a perspective view of the basic body in conjunction with the
[0063] Preload ring to illustrate the insertion of a pressure piece into the base body;
[0064] Fig. 7 shows a perspective view of the basic body in conjunction with the
[0065] Preload ring to illustrate the inserted pressure piece in the base body;
[0066] Fig. 8 shows a perspective view of the base body and the preload ring during placement on the gear;
[0067] Fig. 9 shows a perspective view of the base body and the preload ring on the gear, focusing on an engagement between the gear and a positioning nose of the base body;
[0068] Fig. 10 shows a perspective view of the printing die in a linear adjustment towards the gear, to illustrate the insertion of the printing pieces;
[0069] Fig. 11 shows another perspective view of the printing die in the linear direction.
[0070] Adjustment towards the gear, to illustrate the insertion of the pressure pieces; and
[0071] Fig. 12 shows a perspective view of a possible embodiment of the base body with a locking mechanism for securing the respective pressure pieces in corresponding receiving spaces.
[0072] In the figures, identical and functionally equivalent elements are labelled with the same reference symbols. 24-0807 PIF
[0073] 14
[0074] Fig. 1 shows a top view of a synchronizing device 10, consisting of a shaft 12, a gear 14 and a sliding sleeve 16, according to the prior art.
[0075] In this arrangement, a pressure piece 18 is inserted into a corresponding axial groove 24 to at least partially support the torque transmission and synchronization of the synchronizing device 10. The pressure piece 18 consists of a base element 20, which is made of, for example, plastic, and a cap 22 arranged on it, which is made of, for example, metal. These components enable the correct function and / or positioning of the pressure piece 18 in the synchronizing device 10.
[0076] The pressure piece 18 is designed for precise alignment between the gear 14 and the sliding sleeve 16. The cap 22 of the pressure piece 18 is designed and used to ensure precise positioning of the pressure piece 18 in the axial groove 24. The pressure piece 18's preload allows for improved force absorption and transmission, ensuring precise alignment between the sliding sleeve 16 and the gear 14, thereby minimizing friction and wear.
[0077] To enable the essentially precise and simple insertion and pre-tensioning of the pressure piece 18 into the axial groove 24 between the gear 14 and the sliding sleeve 16, a tool according to the invention is provided, namely an assembly tool 26 according to the invention, which is not yet shown in Fig. 1. This assembly tool 26 is designed to correctly position and pre-tension the pressure piece 18 and then securely insert it into the provided axial groove 24. The use of this assembly tool 26 significantly simplifies the assembly process and, for example, enables a virtually error-free assembly of the pressure piece 18.
[0078] Fig. 2 shows a perspective view of the assembly tool 26 for inserting pressure pieces 18 into the synchronizing device 10. The assembly tool 26 comprises a base body 28, a preload ring 30 and a pressure plunger 32.
[0079] First, the pressure pieces 18 are to be inserted into receiving spaces of the base body 28. By placing and rotating the preload ring 30 relative to the base body 28, the respective pressure pieces 18 are preloaded and correctly positioned. 24-0807 PIF
[0080] 15 is positioned. For example, the pressure ram 32 could also be used to rotate the not easily accessible preload ring 30 relative to the base body 28. Subsequently, the base body 28 and the preload ring 30, which are now assembled, are placed coaxially with the shaft 12 onto the gear 14. Finally, the pressure ram 32 is moved linearly towards the gear 14, coaxially with the shaft 12, in order to insert the respective pressure pieces 18 inside the base body 28 into the underlying axial grooves 24.
[0081] Accordingly, Fig. 2 illustrates a possible rotational movement R1 of the preload ring 30, a possible rotational movement R2 of the pressure plunger 32, and a linear adjustment L of the pressure plunger 32 towards the gear 14. To push the respective components of the assembly tool 26 along the shaft 12, the base body 28 includes a shaft opening 28a, the preload ring 30 a shaft opening 30a, and the pressure plunger 32 a shaft opening 32a, wherein the respective shaft openings 28a, 30a, and 32a have essentially the same diameter, which is specifically designed to fit the diameter of the shaft 12. Thus, the respective components, namely the base body 28, the preload ring 30, and the pressure plunger 32, can be adjusted relative to the gear 14, particularly coaxially.This enables the positioning of the base body 28 relative to the gear 14 and also allows the adjustment or linear adjustment L of the pressure punch 32 in the direction of the gear 14 for inserting the respective pressure pieces 18.
[0082] Fig. 3 shows a perspective view of the base body 28 of the assembly tool 26, which is used for inserting pressure pieces 18 into a synchronizing device 10. The central shaft opening 28a, also shown here, enables the precise coaxial alignment of the base body 28 with the shaft 12 of the synchronizing device 10, thus facilitating the exact and precise assembly necessary for inserting the respective pressure pieces 18 into the respective axial grooves 24. The receiving spaces 34 mentioned in Fig. 2 are shown here, depicted as shaped recesses or indentations into which the pressure pieces 18 can be inserted precisely to securely position them in the base body 28. In these receiving spaces 34, the pressure pieces 18 are thus held in a pre-tensioned position for insertion into the axial grooves 24 before being finally inserted.24-0807 PIF.
[0083] 16
[0084] Guide grooves 36 are arranged along the inner circumference of the base body 28 and guide the preload ring 30. These guide grooves 36 enable the preload ring 30 to insert the respective pressure pieces 18 uniformly into the respective receiving spaces 34 and preload them accordingly. Furthermore, an additional receiving space 38 is provided, which accommodates locking elements 40 that hold the pressure pieces 18 in their positions before they are inserted into the respective axial grooves 24 by the pressure sensor 32.
[0085] Furthermore, recesses 42 are shown, which are arranged along the outer circumference of the base body 28 and provide a receptacle for the respective rotating elements of the pressure ram 32. These recesses allow both the preload ring 30 to rotate and the pressure pieces 18 to be inserted. The recesses 42 of the base body 28 thus serve as guides for the rotating elements, enabling the pressure ram 32 to be correctly adjusted in the linear adjustment L in the direction of the gear 14 and thus allowing the precise insertion of the respective pressure pieces 18 into the axial grooves 24. These recesses 42 therefore allow the components to move in a coordinated manner and the pressure pieces 18 to be guided smoothly into the correct position.
[0086] Furthermore, openings 44 are provided as access points for the respective pressure pieces 18, while lines 46 connect the opening 44 to the respective receiving chamber 34. These lines 46 thus allow the pressure pieces 18 to be guided into the receiving chambers 34 before being pre-tensioned. The lines 46 are also tapered, being larger in the area of the opening 44 than at the outlet. This tapered design allows the pressure pieces 18 to be inserted untensioned through the opening 44. By adjusting the pre-tensioning ring 30, and thus by moving the pressure pieces 18 along the tapered line 46, they can be pre-tensioned. This pre-tensions them as they enter the receiving chambers 34, where they can then be inserted into the respective axial grooves 24.Furthermore, through-openings 48 are provided in the receiving chambers 34, through which the pressure pieces 18 can be pushed from the receiving chamber 34 into the axial grooves 24 of the gear 14 by applying the pressure plunger 32. 24-0807 PIF.
[0087] 17
[0088] Furthermore, another guide groove 50 is shown, which is designed to guide a sliding element 56 of the preload ring 30. This guide groove 50 enables controlled movement of the sliding element 56, which moves the pressure piece 18 into its final position in the receiving chamber 34. Like the other guide groove 36, this guide groove 50 is also arranged around a circumference relative to the axis of rotation or the shaft, thus enabling a rotary movement of the sliding element 56. The guide groove 50 transitions into the channel 46, allowing the sliding element 56 to be inserted from the guide groove 50 into the channel 46 and thus continue to move the pressure piece 18 into the receiving chamber.
[0089] Finally, a positioning lug 52 is shown, which allows the base body 28 to be placed precisely onto the gear 14. The positioning lug 52 is designed such that when the base body 28 is placed on the gear 14, the gear 14 cannot be rotated or adjusted further, thus enabling precise positioning of the base body 28 relative to the gear 14. Because no further rotation or adjustment of the base body 28 is possible, precise positioning of the pressure piece 18 relative to the axial groove 24 can be achieved. This means that later, a simple linear adjustment L of the pressure plunger 32 is sufficient to position or insert the pressure piece 18 accordingly.
[0090] Thus, the base body is provided as the central element of the assembly tool 26, which enables the receiving, guiding and positioning of the pressure piece 18 and thus provides for the integration of the pressure piece and subsequently makes it available for positioning or insertion into the axial groove 24.
[0091] Fig. 4 shows a perspective view of the preload ring 30 of the assembly tool 26, with respective components necessary for preloading and guiding the pressure pieces 18 into the synchronizing device 10.
[0092] The preload ring 30 has a shaft opening 30a, which enables the precise coaxial alignment of the preload ring 30 on the shaft 12 and the base body 28. This shaft opening 30a is therefore designed such that the preload ring 30 can be guided essentially exactly along the shaft 12, thus allowing rotation or coaxial rotation with the base body 28. 24-0807 PIF
[0093] 18
[0094] Guide elements (not shown) are provided, which are arranged in an inner area of the preload ring 30. These are designed to move or position the preload ring 30 along the further guide grooves 50 of the base body 28 and to enable controlled rotation in order to adjust the respective pressure piece 18 from the opening into the respective receiving spaces 34. Precise or perfectly fitting guidance is necessary to allow the pressure pieces 18 to be additionally preloaded during rotation, particularly by the tapered line 46.
[0095] Furthermore, the respective recesses 58 are also arranged on the outer circumference of the preload ring 30, which are provided for receiving the rotating elements of the pressure ram 32. These recesses 58 enable synchronous movement of the pressure ram 32 in linear adjustment L towards the gear 14.
[0096] Finally, through-openings 60 are integrated into or arranged on the preload ring 30. These through-openings 60 are designed to receive the respective base elements of the pressure ram 32 or to allow them to pass through these through-openings 60, thus enabling the insertion of the respective pressure pieces 18 into the respective axial grooves 24. This means that as soon as the pressure ram 32 is passed through the through-openings 60, the pressure pieces 18 can be inserted into the axial grooves 24 of the synchronizing device 10.
[0097] Overall, the various geometric features of the preload ring 30, and thus the shaft opening 30a, the guide elements, the sliding elements 56, the recess 58 and the through-openings 60, enable essentially precise control over the positioning and preloading of the pressure pieces 18 in the base body 28 before they are inserted into the axial grooves 24 with the pressure punch 32.
[0098] Fig. 5 shows a perspective view of the pressure die 32 of the assembly tool 26, which is used for inserting the pressure pieces 18 into the axial grooves 24 of the synchronizing device 10. The pressure die 32 includes the respective shaft opening 32a, which is used for linear adjustment L to the gear 14. Furthermore, the pressure die includes the base element 62, which is located at the lower end of the pressure die 32. It is shaped to have the exact geometry of the through-holes through which it must pass to ensure a precise fit. 24-0807 PIF
[0099] 19
[0100] To facilitate the execution, this foot element 62 is designed to insert the respective pressure pieces 18 from the receiving chamber 34 into the respective axial groove 24, thus making the insertion of the respective pressure pieces particularly easy. The precise fit of the respective foot elements relative to the through-holes enables a stabilized movement or linear adjustment towards the gear. Furthermore, the pressure plunger 32 includes rotating elements 64, which are designed to enable a synchronous rotary movement with the preload ring 30 or to rotate the preload ring 30 by engaging in the respective recesses of the preload ring.Furthermore, the rotating elements 64 are designed to be inserted into the respective recesses 42 of the base body 28, so that when the respective recesses 58 of the preload ring 30 are positioned relative to the base body 28, the rotating elements 64 can be guided through all recesses 42, 58. Thus, the respective foot elements 62 of the pressure ram 32 are guided towards the pressure piece 18, so that the latter can then be inserted into the axial groove 24. Furthermore, the foot elements 62 have, for example, respective pressure elements 66, which either have a precise geometric shape that is identical to the geometric shape of the respective pressure pieces 18 in order to ensure a uniform force distribution on the pressure piece 18. These pressure elements 66 can also be elastic or malleable, so that they can adapt to the shape of the pressure pieces and return to their original position.
[0101] In summary, the pressure stamp 32 is designed to guide the pressure pieces 18 into the respective axial grooves 24 by means of the foot element 62 and to enable precise guidance of the pressure stamp 32 by means of the rotating elements 64, in particular to enable a stabilized linear adjustment L towards the gear 14.
[0102] Fig. 6 shows a perspective view of the synchronizing device 10, showing in particular the base body 28, which is engaged with the preload ring 30. The pressure pieces 18 are inserted into the base body 28 through the openings 44. They must then be guided out of the receiving spaces 34 through the through-opening 48 in order to be inserted into the respective axial grooves 24 of the synchronizing device 10. The positioning lug 52, shown here, enables the base body 28 to be placed precisely onto the gear 14. 24-0807 PIF
[0103] 20
[0104] The points 54, which engage with the gear 14, specifically with the teeth or between the teeth of the gear 14, enable precise positioning of the base body 28 relative to the gear 14. This also allows for the precise placement and positioning of the pressure pieces 18, and thus their easy insertion into the axial grooves 24. This design ensures that all components of the assembly tool remain coaxially aligned and that the pressure pieces 18 are correctly inserted into the axial grooves 24.
[0105] Fig. 7 shows a perspective view of the synchronizing device 10 with the base body 28 and the preload ring 30, which are also shown in engagement. The shaft 12 and the gear R1 are also depicted, illustrating the precise alignment and connection of these components. Furthermore, a viewing window 68 is shown, allowing the user or assembler to see directly into the receiving spaces 34. This enables verification that the pressure piece 18 is correctly positioned and ready for installation in the axial groove 24. This viewing window 68 thus serves as a control function, allowing precise verification during the assembly process of whether the respective pressure pieces are ready for insertion.
[0106] Fig. 8 shows a perspective view of the base body 28 and the preload ring 30, which are moved along the shaft 12 in a positioning motion Z in the direction of the gear 14.
[0107] Fig. 9 shows the same view as in Fig. 8, however, the base body 28 and the preload ring 30 are already positioned on the gear 14. The positioning lugs 52 and the tips 54 are highlighted here, with the tips 54 snapping or locking between the teeth of the gear 14, thus enabling a firm positioning when placing the base body 28 on the gear 14, so that the pressure piece 18 can subsequently be inserted into the axial groove 24.
[0108] Figures 10 and 11 show the situation from Figure 8, but with the additional movement of the pressure plunger 32 along the linear adjustment L. In Figure 11, the pressure plunger 32 is fully engaged with the base body 28, with the foot element 62 being guided through the passage opening 60 to push the pressure piece 18 from the receiving chamber 34 into the axial groove 24. The rotating element 64 is engaged here with the 24-0807 PIF
[0109] 21
[0110] Recess 42 is shown and is additionally guided by the progressive movement of the linear adjustment L with the recess 58 of the base body 28 until it has completely transferred the pressure piece 18 from the receiving space 34 into the axial groove 24 and has securely inserted it.
[0111] Fig. 12 shows the base body 28 with the locking elements 40. These locking elements 40 are arranged in the further receiving spaces 38 and are designed to securely hold or lock the pressure pieces 18 in the respective receiving spaces 34. The locking elements 40 grip or hold the pressure pieces 18 by pressing against them and ensuring that they remain in their position and are pre-tensioned until they are inserted into the respective axial grooves 24 of the synchronizing device 10. The locking mechanism thus enables precise and, in particular, stable positioning of the pressure pieces 18 in the receiving spaces 34 during the assembly process and when using the assembly tool 26.
[0112] In summary, the invention proposes an assembly aid for pressure pieces 18 on synchronous units or synchronous devices 10, using a corresponding three-part assembly tool 26.
[0113] -0807 PIF
[0114] 22
[0115] Reference symbol list
[0116] Synchronous device shaft gear sliding sleeve pressure piece base element cap axial groove assembly tool base body a shaft opening preload ring a shaft opening pressure plunger a shaft opening receiving space guide groove further receiving space locking elements recess
[0117] Opening, conduit, passage opening, further guide groove, positioning nose, tips
[0118] Sliding element, recess, passage opening, foot element, rotating element, push-on element, viewing window 24-0807 PIF
[0119] 23
[0120] R1 first rotational movement
[0121] R2 second rotational movement
[0122] L linear adjustment
Claims
24-0807 PIF 24 Patent claims 1. Assembly tool (26) for inserting pressure pieces (18) into a synchronizing device (10) of a transmission, by which at least one pressure piece (18) can be inserted into a corresponding axial groove (24) between a gear (14) and a sliding sleeve (16) of the synchronizing device (10), - with a base body (28) for receiving the at least one pressure piece (18) into a corresponding receiving space (34) of the base body (28), - with a preload ring (30) for preloading the at least one pressure piece (18) and for inserting the at least one preloaded pressure piece (18) into the corresponding receiving space (34), and - with a pressure stamp (32) for inserting at least one pressure piece (18) from the corresponding receiving space (34) into the corresponding axial groove (24), - wherein the preload ring (30) mounted on the base body (28) is rotatable coaxially relative to the base body (28) to receive the pressure piece (18), - wherein the base body (28) with the attached preload ring (30) can be placed on the gear (14), and - wherein, in order to insert the at least one pressure piece (18) into the axial groove (24), the pressure plunger (32) can be positioned relative to the preload ring (30) and is linearly displaceable relative to the base body (28).
2. Assembly tool (26) according to claim 1, characterized in that the base body (28) has at least one circumferentially arranged opening (44) for receiving the at least one pressure piece (18) in the corresponding receiving space (34).
3. Assembly tool (26) according to claim 2, characterized in that a line (46) for moving the at least one pressure piece (18) into the receiving space (34) is arranged from the opening (44) to the receiving space (34). 24-0807 PIF 25 4. Assembly tool (26) according to one of the preceding claims, characterized in that a corresponding positioning nose (52) is arranged on the receiving space (34).
5. Assembly tool (26) according to one of the preceding claims, characterized in that a through-opening (48) for inserting the at least one pressure piece (18) into the axial groove (35) is arranged on the receiving space (34).
6. Assembly tool (26) according to one of the preceding claims, characterized in that the base body (28) has at least one guide groove (36) for positioning the preload ring (30) relative to the base body (28).
7. Assembly tool (26) according to one of the preceding claims, characterized in that the preload ring (30) has at least one guide element for positioning relative to the base body (28).
8. Assembly tool (26) according to one of the preceding claims, characterized in that the preload ring (30) has at least one through-opening (60) for positioning the pressure plunger (32) relative to the preload ring (30) and / or relative to the base body (28).
9. Assembly tool (26) according to one of the preceding claims, characterized in that the preload ring (28) has at least one sliding element (56) for preloading and / or sliding the at least one pressure piece (18) into the receiving space (34).
10. Assembly tool (26) according to one of the preceding claims, characterized in that 24-0807 PIF 26 the printing die (32) has at least one foot element (62) for inserting the at least one pressure piece (18) into the corresponding axial groove (24).
11. Assembly tool (26) according to claims 5 and 10, characterized in that the at least one foot element (62) can be passed through the passage opening (60) of the preload ring (30) and through the passage opening (48) of the base element.
12. Assembly tool (26) according to claim 10 or 11, characterized in that the at least one foot element (62) has a pressing element (66) at a foot end aligned towards the at least one pressure piece (18).
13. Assembly tool (26) according to one of the preceding claims, characterized in that the pressure punch (32) has at least one rotating element (64) for rotating the preload ring (28) and / or the base body (28).
14. Assembly tool (26) according to claim 13, characterized in that the base body (28) and / or the preload ring (30) each have at least one recess (42, 58) arranged on the outer circumference for receiving the rotating element (64) of the pressure punch (32).
15. Method for inserting pressure pieces (18) into a synchronizing device (10) by means of an assembly tool (26), in which at least one pressure piece (18) is inserted into a corresponding axial groove (24) between a gear (14) and a sliding sleeve (16) of the synchronizing device (10), - wherein at least one printing piece (18) is received into a corresponding receiving space (34) of the base body (28), - wherein at least one pressure piece (18) is pre-tensioned by means of a pre-tensioning ring (30) and inserted into the corresponding receiving space (34), -0807 PIF 27 - wherein, in order to receive the pressure piece (18) into the receiving space (34), the preload ring (30) mounted on the base body (28) is rotated coaxially relative to the base body (28), - wherein the base body (28) with the attached preload ring (30) is placed on the gear (14), and - wherein, in order to insert the at least one pressure piece (18) into the axial groove (24), the pressure plunger (32) is positioned relative to the preload ring (30) and is linearly displaced relative to the base body (28).