F clutch drum and method for improving performance of F clutch drum

Abstract

The invention relates to an F clutch drum. The F clutch drum comprises a clutch drum body and a gear ring which is fixed to the inner wall of the clutch drum body in an inlaid casting mode and used for being matched with a clutch disc of an F clutch for use. The clutch drum body is made of an aluminum alloy material; the gear ring is made of alloy steel. An upgraded drum serves as a brand-new insert design process and is formed by extruding and stamping an alloy steel sheet, but the size requirement of connecting teeth is difficult to meet, iron bars are welded around the steel sheet, on one hand, the distance between the teeth is kept uniform, and it is guaranteed that the connecting size meets the requirement, and on the other hand, on the other hand, the iron bars are welded to the periphery of the steel sheet. The metal ring welded on the periphery is subsequently cast in the aluminum alloy, and therefore it is guaranteed that the steel sheet and the aluminum alloy are firmly connected and cannot be disengaged from the aluminum alloy.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile transmissions, in particular to an F clutch drum and a method for improving the performance of the F clutch drum. Background Art

[0002] Transmissions in the 10L1000, 10L90, 10L80, 10R140, 10R80, and 10R60 models are commonly used in Ford and GM pickup trucks and cars. The F clutch drum used in these transmissions is made of aluminum alloy. This material is used because the magnetic signal inside the clutch drum must be transmitted to the external magnetic signal receiver. To ensure smooth transmission of this signal, the F clutch drum used in these 10L1000, 10L90, 10L80, 10R140, 10R80, and 10R60 transmissions was originally designed to be cast from 100% aluminum alloy. While this material meets the signal transmission requirements, it is relatively soft and susceptible to damage during use. This is particularly true at the location where the clutch teeth connect to the F clutch. Frequent impact with the steel clutch plate (including friction and steel plates) can easily cause the F clutch drum to break. Summary of the Invention

[0003] In response to the problems existing in the prior art, the present invention proposes an F clutch drum, comprising a clutch drum body and a gear ring fixed to the inner wall of the clutch drum body by inlay casting for use with the clutch plate of the F clutch; the clutch drum body is made of aluminum alloy; the gear ring is made of alloy steel.

[0004] Based on the above solution, the gear ring includes a gear ring stamped or extruded from an alloy steel sheet and several metal rings sleeved on the outside of the gear ring and constraining the gear ring. The connection between the metal ring and the outer wall of the gear ring is fixed by welding.

[0005] On the basis of the above scheme, the gear ring formed by stamping alloy steel sheets includes gear teeth and tooth grooves; the back of the gear teeth is formed with a back groove for injecting aluminum alloy when casting the casting body; the back of the tooth groove is formed with a joint for welding and fixing the gear ring and the metal ring, and the metal ring is not connected to the gear ring at the back groove.

[0006] Based on the above solution, the material of the gear ring is alloy steel.

[0007] On the basis of the above solution, it also includes a first annular gear ring and a second annular gear ring formed at both ends of the clutch drum body.

[0008] The present invention also provides a method for preparing the above-mentioned F clutch drum, comprising the following steps: S1 stamps the alloy steel sheet to form gear teeth, tooth grooves and back grooves; S2 bends the stamped alloy steel sheet into a ring shape and inserts it into the metal ring; S3: welding and fixing the metal ring and the gear ring at the joint to form the gear ring; S4 places the ring gear in a mold for casting the body; S5 injects aluminum alloy liquid into the mold. At the position of the alloy steel gear ring, the aluminum alloy liquid will enter the back groove and wrap the metal ring. After cooling, the metal ring at the back groove is firmly fixed by the aluminum alloy in the back groove and the aluminum alloy of the main body.

[0009] The present invention also provides a transmission housing, comprising a transmission outer shell and an F clutch drum disposed in the transmission outer shell. The F clutch drum is the above-mentioned F clutch drum or the F clutch drum prepared by the above-mentioned method.

[0010] The present invention further provides a transmission, wherein the transmission housing comprises a transmission outer shell and an F clutch drum disposed in the transmission outer shell, wherein the F clutch drum is the above-mentioned F clutch drum or the F clutch drum prepared by the above-mentioned method.

[0011] Based on the above solution, the transmission refers to a transmission with model number 10L1000, 10L90, 10L80, 10R140, 10R80 or 10R60.

[0012] Beneficial effects of the present invention: Our upgraded drum features a completely new insert design, extruded and stamped from alloy steel sheets. However, this approach struggled to meet the required dimensions for the connecting teeth. We welded iron bars around the steel sheets to maintain uniform spacing between the teeth and ensure the connection met the required dimensions. More importantly, the welded metal rings are subsequently cast inside the aluminum alloy, ensuring a secure connection between the steel and aluminum, preventing them from separating. The steel insert and the welded metal rings form a single, integrated unit: aluminum encasing the steel, steel encased within the aluminum.

[0013] The F clutch drum of the present invention uses an inlay casting method to fix the alloy steel ring gear within the aluminum alloy clutch drum body. This not only meets the overall material requirements of the F clutch drum, but also effectively enhances the strength of the F clutch drum at the point where it fits with the clutch plate, avoiding the problem of the F clutch drum breaking at this point during use.

[0014] Furthermore, the present invention's ring gear is extruded or stamped from alloy steel sheets. When the ring is formed, a metal ring made of alloy steel is welded to the outside. This not only maintains uniform spacing between the teeth of the ring gear and ensures that the connection dimensions meet requirements, but also ensures that the welded metal ring is subsequently cast within the aluminum alloy, thereby ensuring a secure connection between the steel sheet and the aluminum alloy and preventing it from falling out of the aluminum alloy. The steel insert (i.e., the ring gear) and the welded metal ring form a single, integral insert (i.e., the ring gear). The ring gear is cast inlaid with the clutch drum body, with the aluminum encasing the steel and the steel encasing the aluminum, forming a single unit. This ring gear structure also enhances the secure connection between the clutch drum body and the ring gear. The aluminum alloy liquid filled in the back groove strengthens the gear teeth after cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 3D schematic structural diagram of the F clutch drum in Example 1 of the present invention; Figure 2 Schematic diagram of the structure of the F clutch drum in Example 1 of the present invention; Figure 3 for Figure 2 AA sectional view of FIG. Figure 4 for Figure 3 Schematic diagram of the enlarged structure of part A; Figure 5 Schematic diagram of the structure of the ring gear in the F clutch drum of the present invention (stereoscopic perspective); Figure 6 for Figure 5 Schematic diagram of the enlarged structure of part C; Figure 7 Schematic diagram of the structure of the ring gear in the F clutch drum of the present invention (front view); Figure 8 for Figure 7 Schematic diagram of the enlarged structure of part D; Figure 9 Schematic diagram of the structure of the gear teeth in the F clutch drum of the present invention after stamping and before ring forming; Figure 10 for Figure 9 Schematic diagram of the enlarged structure of part B; Figure 11 A schematic structural diagram of the gearbox housing of the present invention (stereoscopic perspective); Figure 12 A schematic structural diagram of the gearbox housing of the present invention (from the main perspective); Figure 13 for Figure 12 BB-direction cross-sectional view; Figure 14 for Figure 12BB cross-sectional view (including F clutch plate). DETAILED DESCRIPTION

[0016] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0017] Example 1 like Figure 1 、 Figure 2 and Figure 3 As shown, the present invention provides an F clutch drum (F Drum). The F clutch drum comprises a clutch drum body 1 and a ring gear 2 fixed to the inner wall of the clutch drum body 1 by insert casting, which is used to cooperate with the clutch plate of the F clutch. The clutch drum body 1 is made of aluminum alloy, and the ring gear 2 is made of alloy steel. Because the ring gear 2 is located outside the area where magnetic signals need to penetrate, alloy steel can be used here.

[0018] The above-mentioned "foundry steel insert" means that when the clutch drum body 1 is cast, the ring gear 2 is placed in the mold in advance. When the molten aluminum alloy liquid solidifies in the mold, the ring gear 2 is firmly fixed to the inner wall of the clutch drum body 1.

[0019] In this way, the gear ring 2 made of alloy steel can be fixed to the inner wall of the clutch drum body 1 made of aluminum alloy, which can not only meet the overall material requirements of the F clutch drum, but also effectively enhance the strength of the F clutch drum at the point where it cooperates with the clutch plate of the F clutch, avoiding the problem of the F clutch drum being broken at this position during use.

[0020] The gear ring 2 made of alloy steel can be manufactured in a conventional manner, such as by conventional machining of gears. However, since the F clutch drum is to be placed in the transmission housing 10 (e.g. Figure 11-14 (As shown), the space between the transmission housing and the clutch drum (F) is only 2-3mm, placing strict demands on the wall thickness of the clutch drum. If the ring gear 2 is machined or cast as a whole, it would be difficult to meet the precision requirements of the transmission housing. Furthermore, when the traditionally manufactured ring gear 2 is fixed to the inner wall of the clutch drum body 1 through insert casting, the connection between the outer wall of the ring gear 2 and the inner wall of the clutch drum body 1 is insufficient, easily causing the ring gear 2 to separate from the clutch drum body 1.

[0021] To this end, the present invention provides a new ring gear 2, which can not only meet the accuracy requirements of the transmission housing for the F clutch drum, but also effectively enhance the strength of the F clutch drum. At the same time, it can also greatly enhance the firmness of the connection between the ring gear 2 and the inner wall of the clutch drum body 1.

[0022] Specifically, such as Figure 3-10 As shown, the gear ring 2 includes a gear ring 2-1 stamped from an alloy steel sheet and a plurality of metal rings 2-2 sleeved on the outside of the gear ring 2-1 to constrain the gear ring 2-1. The metal rings 2-2 are fixed to the outer wall of the gear ring 2-1 by welding. In addition to stamping, extrusion molding can also be used.

[0023] First, the alloy steel sheet is thin (for example, a 0.75mm thick manganese alloy steel sheet can be used). Stamping the ring gear 2-1 from the alloy steel sheet can meet the thickness requirements of the F clutch drum, while also meeting the strength requirements of the ring gear 2. Second, fitting the metal ring 2-2 around the outer surface of the ring gear 2-1 can constrain its shape. After welding the metal ring 2-2 to the outer wall of the ring gear 2-1, the ring gear 2 is then secured to the inner wall of the clutch drum body 1 by insert casting, effectively enhancing the secure connection between the clutch drum body 1 and the ring gear 2.

[0024] The material of the metal ring 2-2 can be alloy steel, and the number should be greater than 2. Figure 5 The number of the middle metal rings 2-2 is 4.

[0025] like Figure 7 and Figure 8 As shown, the gear ring 2-1 formed by stamping alloy steel sheets includes gear teeth 2-11 and tooth grooves 2-12; the back of the gear teeth 2-11 is formed with a back groove 2-13 for injecting aluminum alloy when the casting body 1 is cast; the back of the tooth groove 2-12 is formed with a joint 2-14 for welding and fixing the gear ring 2-1 and the metal ring 2-2, and the metal ring 2-2 is not connected to the gear ring 2-1 at the back groove 2-13.

[0026] This structure allows the back groove 2-13 to be filled with liquid aluminum alloy during casting of the clutch drum body 1. The liquid aluminum alloy also envelops the metal ring 2-2 located in the back groove 2-13. When the liquid aluminum alloy cools, the clutch drum body 1 and the metal ring 2-2 are firmly fixed together, thereby enhancing the connection between the clutch drum body 1 and the ring gear 2. The liquid aluminum alloy filled in the back groove 2-13 strengthens the strength of the gear teeth 2-11 after cooling.

[0027] To improve the performance of the F clutch drum, follow these steps: S1: stamping or extruding the alloy steel sheet to form the gear teeth 2-11, the tooth grooves 2-12 and the back grooves 2-13; the stamped alloy steel sheet is as follows Figure 9 As shown; S2 bends the stamped alloy steel sheet into a ring shape and inserts it into the metal ring 2-2; S3: Welding the metal ring 2-2 and the gear ring 2-1 at the joint 2-14 to form the gear ring 2; S4: placing the ring gear 2 in a mold (i.e., a casting mold) for casting the body 1; S5 injects aluminum alloy liquid into the mold. At the position of the gear ring 2, the aluminum alloy liquid enters the back groove 2-13 and wraps the metal ring 2-2. After cooling, the metal ring 2-2 at the back groove 2-13 is firmly fixed by the aluminum alloy in the back groove 2-13 and the aluminum alloy of the body 1.

[0028] The aforementioned improvement of the performance of the F clutch drum refers more to improving the strength of the F clutch drum, especially improving the strength of the F clutch drum at the portion corresponding to the ring gear 2 .

[0029] The gear ring 2-1 is made of alloy manganese steel sheet by stamping (or extrusion). The gear ring formed in this way is in a spring state before being fixed (such as Figure 9 As shown in the figure, this results in an unstable distance between each tooth, making it difficult to match the required dimensions of the mating clutch plate. The use of metal ring 2-2 maintains uniform distance between each tooth and ensures that the connection dimensions meet the requirements. More importantly, the welded metal ring is subsequently cast within the aluminum alloy, ensuring a secure connection between the steel plate (i.e., gear ring 2-1) and the aluminum alloy, preventing it from dislodging from the aluminum alloy clutch drum body 1. The steel plate insert (i.e., gear ring 2-1) and the welded metal ring 2-2 form a single, integral insert (i.e., gear ring 2). Gear ring 2 is cast inlaid with the clutch drum body 1, forming a single, integrated unit: aluminum encasing steel, and steel encasing aluminum.

[0030] The alloy steel ring gear 2 is used in conjunction with the clutch's friction plate and steel plate. During use, these plates and plates will collide with the alloy steel ring gear 2. Conventional F-type clutch drums have aluminum alloy connecting surfaces, which are particularly soft and prone to breakage from prolonged impact. The alloy steel ring gear 2 of the present invention has a surface hardness higher than that of the internal clutch connecting teeth, significantly enhancing the strength of the F-type clutch drum and preventing damage from prolonged impact.

[0031] Example 2 like Figure 3As shown, based on the F clutch drum in embodiment 1, it further includes a first annular gear ring 3 and a second annular gear ring 4 formed at both ends of the clutch drum body 1.

[0032] The first and second annular gear rings 3 and 4 respectively mate with the splines of the F clutch. Conventional F clutch drums also utilize aluminum alloy for these ring gears, integrally cast with the clutch drum body 1. To enhance the overall strength of the F clutch drum, both ring gears 3 and 4 can adopt the structure of the ring gear 2 described in Example 1.

[0033] Example 3 Based on the F clutch drum in Example 1 or 2, as Figure 11-13 As shown, the present invention also provides a transmission housing, which includes a transmission outer shell 10 and an F clutch drum arranged in the transmission outer shell 10, wherein the F clutch drum includes a clutch drum body 1 and a gear ring 2 fixed to the inner wall of the clutch drum body 1 by inlay casting for use with the clutch plate of the F clutch; the clutch drum body 1 is made of aluminum alloy; and the gear ring 2 is made of alloy steel.

[0034] Example 4 Based on the transmission housing of Example 3, the present invention provides a transmission, specifically a transmission model 10L1000, 10L90, 10L80, 10R140, 10R80, or 10R60. The transmission provided in this embodiment is based on the original transmission model, with the F clutch drum in the original transmission model replaced with the F clutch drum of Example 1 or 2 of the present invention. This effectively extends the service life of the transmission.

[0035] It should be noted that, unless there is any conflict, the features in the embodiments of this application can be combined with each other.

[0036] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. An F clutch drum, characterized in that: The invention comprises a clutch drum body (1) and a gear ring (2) fixed to the inner wall of the clutch drum body (1) by means of inlay casting and used in conjunction with a clutch plate of an F clutch; the clutch drum body (1) is made of aluminum alloy; the gear ring (2) is made of alloy steel.

2. The F clutch drum according to claim 1, characterized in that: The gear ring (2) comprises a gear ring (2-1) formed by stamping an alloy steel sheet and a plurality of metal rings (2-2) sleeved on the outside of the gear ring (2-1) and constraining the gear ring (2-1), wherein the connection between the metal rings (2-2) and the outer wall of the gear ring (2-1) is fixed by welding.

3. The F clutch drum according to claim 2, characterized in that: A gear ring (2-1) formed by stamping an alloy steel sheet comprises gear teeth (2-11) and tooth grooves (2-12); a back groove (2-13) is formed on the back of the gear teeth (2-11) for injecting aluminum alloy when casting the casting body (1); a connecting portion (2-14) is formed on the back of the tooth groove (2-12) for welding and fixing the gear ring (2-1) and the metal ring (2-2); the metal ring (2-2) is not connected to the gear ring (2-1) at the back groove (2-13).

4. The F clutch drum according to claim 1, characterized in that The material of the metal ring (2-2) is alloy steel.

5. The F clutch drum according to claim 1, characterized in that It also includes a first annular gear ring (3) and a second annular gear ring (4) formed at both ends of the clutch drum body (1).

6. A method for improving the performance of an F clutch drum, characterized in that: The steps include: S1 stamps the alloy steel sheet to form gear teeth (2-11), tooth grooves (2-12) and back grooves (2-13); S2 bends the stamped alloy steel sheet into a ring shape and inserts it into the metal ring (2-2); S3: welding and fixing the metal ring (2-2) and the gear ring (2-1) at the joint (2-14) to form the gear ring (2); S4 places the ring gear (2) in a mold for casting the body (1), and casts the clutch drum body (1) by using an inlay casting method; S5 injects aluminum alloy liquid into the mold. At the position of the alloy steel gear ring (2), the aluminum alloy liquid enters the back groove (2-13) and wraps the metal ring (2-2). After cooling, the metal ring (2-2) at the back groove (2-13) is firmly fixed by the aluminum alloy in the back groove (2-13) and the aluminum alloy of the clutch drum body (1).

7. A gearbox housing, characterized in that: It comprises a gearbox outer shell (10) and an F clutch drum arranged in the gearbox outer shell (10), wherein the F clutch drum is the F clutch drum described in claims 1 to 5 or the F clutch drum prepared by the method of claim 6.

8. A transmission, characterized in that: The transmission housing comprises a transmission outer shell (10) and an F clutch drum arranged in the transmission outer shell (10), wherein the F clutch drum is the F clutch drum described in claims 1-5 or the F clutch drum prepared by the method of claim 6.

9. A transmission according to claim 8, characterized in that: The transmission refers to a transmission with model number 10L1000, 10L90, 10L80, 10R140, 10R80 or 10R60.

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