Large-diameter reducing input shaft forging processing equipment

Abstract

The present application relates to the technical field of hot forging forming of input shaft products, in particular to a large-diameter-reducing input shaft forging processing equipment, which comprises an equipment body, a motor is arranged inside the top end of the equipment body, a first die is connected to one side of the motor, a second die is abutted to the bottom of the first die, a workbench is connected to the bottom of the second die, and a material-ejecting rod is arranged inside one side of the workbench; a limiting mechanism is connected to one side of the equipment body, and a first gear is connected to one side of the top end of a support pile. The raw material is placed between the first die and the second die, and the raw material is filled in the first die and the second die through mold flow analysis, so that the raw material is in the shape of a wine bottle and is forged through four rollers, and then the raw material is ejected from the die through the material-ejecting rod. The material utilization rate is high, the comprehensive utilization rate of raw materials can reach 80%, the material utilization rate of conventional processes does not exceed 70%, and the material utilization rate is at least 10% higher than that of conventional processes.

Description

Technical Field

[0001] This invention relates to the field of hot forging technology for input shaft products, specifically to a forging and processing equipment for large-diameter input shafts. Background Technology

[0002] The input shaft is a crucial component in automotive transmissions. Its upper helical gear meshes with the transmission's central shaft, and the splines on the shaft connect to the engine via a clutch, making it key to power transmission. Due to its unique structure, it is typically machined using traditional cutting methods. However, traditional cutting methods suffer from poor material utilization, low production efficiency, and long production cycles, resulting in higher product costs. Furthermore, they disrupt metal flow lines, affecting the gear's bending fatigue strength, tooth surface contact fatigue strength, and wear resistance, ultimately reducing the gear's service life.

[0003] With the development of plastic processing technology, billet preparation methods such as wedge rolling, cold extrusion, and hot forging have become relatively mature and widely used. Wedge rolling can efficiently process stepped shaft billets; however, the upper part to be cut into a tooth shape is the position with the largest diameter of the rolled piece, which is generally not processed in wedge rolling, as the heating process would worsen the metal properties. Furthermore, traditional wedge rolling requires large-diameter bars with a tooth tip circle diameter, resulting in a very large reduction in area and making rolling difficult. Cold extrusion produces stepped shafts with high precision, but it is limited by the process and reduction in area, requiring multi-step extrusion. Moreover, phosphating and saponification treatments cause environmental pollution. Conventional hot forging also suffers from problems such as complex product shapes and low material utilization. Therefore, there is an urgent need to design a large-diameter input shaft forging processing equipment to solve these problems. Summary of the Invention

[0004] The purpose of this invention is to provide a forging and processing equipment for large-diameter input shafts, to solve the problems mentioned in the background art, such as the very large reduction in area caused by the traditional wedge rolling method, which makes rolling difficult. While stepped shafts processed by cold extrusion have high precision, they are limited by the process and the reduction in area, requiring multi-step extrusion. Furthermore, phosphating and saponification treatments cause environmental pollution. Conventional hot forging also suffers from low material utilization due to the complex shape of the product.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a forging and processing equipment for a large-diameter input shaft, comprising:

[0006] The equipment body includes a device body, a motor is inserted inside the top of the device body, a first mold is connected to one side of the motor, a second mold is abutted against the bottom of the first mold, a worktable is connected to the bottom of the second mold, and a top material rod is inserted inside one side of the worktable;

[0007] Preferably, the texture on the bottom surface of the first mold is the same as the shape of the surface of the second mold, and the bottom surface of the second mold is the same as the shape of the bottom surface of the first mold.

[0008] Preferably, the height of the first mold and the second mold is greater than 20mm on both sides, the gap on one side is 0.3mm, the draft angle is 3° on both sides and 1.5° on one side, and the root corner is rounded. Each side of the first mold and the second mold is provided with a set of ejector rods, and each set of ejector rods consists of two rods.

[0009] Preferably, a limiting mechanism is connected to one side of the device body, including a support pile. A first gear is movably disposed on one side of the top of the support pile, and a wheel is disposed on one side of the first gear. The first gear and the wheel are connected together by a conveyor belt. A fixed rod is connected to one side of the wheel, and a guide rod abuts against one side of the fixed rod. A second gear is connected to one side of the guide rod, and a third gear meshes with one side of the second gear. A positioning rod meshes with one side of the third gear. A threaded hole is provided at the connection between the device body and the bottom end of the support pile. The bottom end of the support pile is threaded and meshes with the threaded hole in the device body. A groove is provided on one side of the top of the support pile, and a bearing seat is provided on one side of the first gear and inserted into the groove at the top of the support pile. Through grooves are provided on both sides of the first mold, and the inner wall of the through grooves is provided with teeth that mesh with the first gear.

[0010] Preferably, one end of the wheel is movably connected to one side of the outer wall of the through groove in the first mold. The guide rod is divided into guide rod one and guide rod two. One side of the second gear is connected to guide rod one, and one side of the third gear is connected to guide rod two. The fixing rod abuts against the guide rod side connected to the third gear. The third gear is provided in two sets, and one set meshes inside the positioning rod. One end of the second gear and the third gear is provided with bearing seat two and connected to one side of the inner wall of the through groove in the first mold. One side of the inner wall of the through groove in the first mold has a slot. The positioning rod is inserted into the slot in the first mold and one side meshes with the third gear.

[0011] Preferably, the second mold has an internal support structure, which includes a fixing block, a limit post fixedly connected to one end of the fixing block, a support rod inserted inside the limit post, a hinge rod inserted inside the support rod, a positioning block sleeved on the outer wall of one end of the support rod, a connecting shaft connected inside the positioning block, and spring rods connected to both sides of the support rod.

[0012] Preferably, the bottom end of the support rod has a through hole one, the limiting pile is concave and has a through hole two, and the hinge rod is inserted into the through hole one and the through hole two to make the limiting pile and the support rod movably connected.

[0013] Preferably, a groove is provided on one side of the positioning block, the top end of the support rod is inserted into the groove of the positioning block and movably connected to the connecting shaft, one end of the connecting shaft is fixedly connected to one side of the inner wall of the groove of the positioning block, a limiting groove is provided on one side of the top material rod, and the shape of the positioning block is the same as the limiting groove of the top material rod.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] This large-diameter input shaft forging process involves inspecting the incoming material before unloading. The raw material is placed between the first and second dies, and through die flow analysis, it fills the interior of both dies, forming a convex shape. It is then forged using four rolls. The first and second dies are nearly closed, employing an extrusion barrel structure with rounded corners at the base and no extrusion barrels on either side. The shaft is then ejected from the die by an ejector rod. This process results in high material utilization, with a comprehensive raw material utilization rate reaching 80%, compared to no more than 70% for conventional processes. This represents at least a 10% improvement over conventional processes. It also allows for the use of smaller raw materials and smaller heating furnaces, resulting in lower energy consumption, a simpler forming process, and a faster production cycle.

[0016] The forging process of the large-diameter input shaft uses support piles to support and limit the first gear. When the first mold rises, the positioning rod engaged on one side of the third gear extends downwards from the first mold, effectively keeping its position unchanged. This limits the bottom surfaces of the two ends of the material extending beyond the first and second molds, preventing material displacement when the first mold rises. During demolding, the ejector rod is inserted into the gap between the motor and the first mold, the second mold, and the worktable, allowing the positioning block to be inserted into the limiting groove opened in the ejector rod. When the support rod remains vertical, it provides auxiliary support between the second mold and the worktable, thus facilitating demolding. Attached Figure Description

[0017] Figure 1 This is a front view structural diagram of the present invention;

[0018] Figure 2 This is a frontal cross-sectional view of the present invention.

[0019] Figure 3 This is a side sectional view of the present invention.

[0020] Figure 4 This is a top-view sectional view of a partial structure of the present invention;

[0021] Figure 5 This is a schematic diagram of a partial cross-sectional structure on the right side of the present invention;

[0022] Figure 6 This is a schematic diagram of a partial cross-sectional view of the present invention.

[0023] In the diagram: 1. Equipment body; 11. Device body; 12. Motor; 13. First mold; 14. Second mold; 15. Workbench; 16. Ejector rod; 2. Limiting mechanism; 21. Support pile; 22. First gear; 23. Conveyor belt; 24. Wheel; 25. Fixed rod; 26. Guide rod; 27. Second gear; 28. Third gear; 29. ​​Positioning rod; 3. Support structure; 31. Fixed block; 32. Limiting pile; 33. Support rod; 34. Hinge rod; 35. Positioning block; 36. Connecting shaft; 37. Spring rod. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Please see Figure 1-6 One embodiment provided by the present invention:

[0026] A forging and processing equipment for large-diameter input shafts includes: an equipment body 1, comprising a device body 11, a motor 12 inserted inside the top of the device body 11, a first mold 13 connected to one side of the motor 12, a second mold 14 abutting against the bottom of the first mold 13, a worktable 15 connected to the bottom of the second mold 14, and a ejector rod 16 inserted inside one side of the worktable 15. The device body 11 and the motor 12 used in this application are commercially available products, and their principles and connection methods are prior art well known to those skilled in the art, and therefore will not be described in detail here.

[0027] Furthermore, the texture on the bottom surface of the first mold 13 is the same as the surface shape of the second mold 14, and the bottom surface shape of the second mold 14 is the same as that of the first mold 13.

[0028] Furthermore, the height of both sides of the first mold 13 and the second mold 14 is greater than 20mm, the gap on one side is 0.3mm, the draft angle is 3° on both sides and 1.5° on one side, and the root corners are rounded. Each side of the first mold 13 and the second mold 14 is provided with a set of ejector rods 16, and each set of ejector rods 16 consists of two rods, so as to facilitate the smooth demolding and gripping of the product.

[0029] Furthermore, a limiting mechanism 2 is connected to one side of the device body 11, including a support pile 21. A first gear 22 is movably arranged on one side of the top of the support pile 21, and a wheel 24 is arranged on one side of the first gear 22. The first gear 22 and the wheel 24 are connected together by a conveyor belt. A fixed rod 25 is connected to one side of the wheel 24, and a guide rod 26 abuts against one side of the fixed rod 25. A second gear 27 is connected to one side of the guide rod 26, and a third gear 28 meshes with one side of the second gear 27. A positioning rod 29 meshes with one side of the third gear 28. A threaded hole is provided at the connection between the device body 11 and the bottom of the support pile 21. The bottom of the support pile 21 is threaded and meshes with the threaded hole in the device body 11. A groove is provided on one side of the top of the support pile 21. A bearing seat is provided on one side of the first gear 22 and inserted into the groove at the top of the support pile 21. Through slots are provided on both sides of the first mold 13, and the inner wall of the through slots is provided with teeth that mesh with the first gear 22, so that the first gear 22 rotates when the first mold 13 moves.

[0030] Furthermore, one end of the wheel 24 is movably connected to one side of the outer wall of the through groove opened in the first mold 13. The guide rod 26 is divided into guide rod one and guide rod two. One side of the second gear 27 is connected to guide rod one, and one side of the third gear 28 is connected to guide rod two. The fixing rod 25 abuts against one side of the guide rod 26 connected to the third gear 28. The third gear 28 is provided with two sets, and one set is engaged inside the positioning rod 29. One end of the second gear 27 and the third gear 28 is provided with bearing seat two and connected to one side of the inner wall of the through groove opened in the first mold 13. One side of the inner wall of the through groove opened in the first mold 13 is provided with a slot. The positioning rod 29 is inserted into the slot opened in the first mold 13 and one side is engaged with the third gear 28, so that the position of the positioning rod 29 can be adjusted when the third gear 28 rotates.

[0031] Furthermore, the second mold 14 is internally connected to a support structure 3, which includes a fixing block 31. One end of the fixing block 31 is fixedly connected to a limit post 32. A support rod 33 is inserted inside the limit post 32. A hinge rod 34 is inserted inside the support rod 33. A positioning block 35 is sleeved on the outer wall of one end of the support rod 33. A connecting shaft 36 is connected inside the positioning block 35 to provide auxiliary support for the ejector rod 16. Spring rods 37 are connected to both sides of the support rod 33.

[0032] Furthermore, the bottom end of the support rod 33 is provided with a through hole 1, the limiting pile 32 is set in a concave shape and is provided with a through hole 2, and the hinge rod 34 is inserted into the through hole 1 and through hole 2 to make the limiting pile 32 and the support rod 33 movably connected, so as to achieve the positioning and connection effect between the limiting pile 32 and the support rod 33.

[0033] Furthermore, a groove is provided on one side of the positioning block 35, and the top end of the support rod 33 is inserted into the groove of the positioning block 35 and movably connected to the connecting shaft 36. One end of the connecting shaft 36 is fixedly connected to one side of the inner wall of the groove of the positioning block 35. A limiting groove is provided on one side of the top material rod 16. The shape of the positioning block 35 is the same as the limiting groove of the top material rod 16, so as to realize the positioning function of the positioning block 35.

[0034] Working principle: When using this invention, after inspecting the incoming material, the raw material is placed between the first mold 13 and the second mold 14. Through mold flow analysis, the material is made to fill the interior of the first mold 13 and the second mold 14, forming the shape inside the first mold 13 and the second mold 14. The material is convex and then forged through four rolls. The first mold 13 and the second mold 14 adopt a near-closed forming method and use an extrusion barrel structure. The root of the extrusion barrel is rounded and there are no extrusion barrels on both sides. Then, the material is ejected from the mold by two sets of four ejector rods 16 inserted on one side of the first mold 13 and the second mold 14.

[0035] In use, the first gear 22 is supported and limited by the support pile 21. When the first mold 13 rises, the first gear 22 meshes with the teeth in the through groove of the first mold 13, causing the conveyor belt 23 sleeved on the outer wall of the first gear 22 to drive the wheel 24 to rotate. This causes the fixing rod 25 to abut against the support guide rod 26, driving the second gear 27 and the third gear 28 to rotate in opposite directions. This causes the positioning rod 29, which meshes on one side of the third gear 28, to extend downwards from the first mold 13, effectively keeping its position unchanged and allowing it to... The bottom surfaces of the two ends of the material extending beyond the first mold 13 and the second mold 14 are limited to prevent material displacement when the first mold 13 rises. During demolding, the ejector rod 16 is inserted into the gap between the motor 12 and the first mold 13, the second mold 14 and the worktable 15, so that the positioning block 35 is inserted into the limiting groove opened in the ejector rod 16, and the support rod 33 is kept stable by the spring rod 37. When the support rod 33 is kept vertical, it provides auxiliary support between the second mold 14 and the worktable 15, thus making demolding easier.

[0036] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A forging and processing equipment for a large-diameter input shaft, characterized in that, include: The equipment body (1) includes a device body (11), a motor (12) is inserted inside the top of the device body (11), a first mold (13) is connected to one side of the motor (12), a second mold (14) is abutted against the bottom of the first mold (13), a worktable (15) is connected to the bottom of the second mold (14), and a top material rod (16) is inserted inside one side of the worktable (15). A limiting mechanism (2) is connected to one side of the device body (11), including a support pile (21). A first gear (22) is movably arranged on one side of the top of the support pile (21). A wheel (24) is arranged on one side of the first gear (22). The first gear (22) and the wheel (24) are connected together by a conveyor belt (23). A fixing rod (25) is connected to one side of the wheel (24). A guide rod (26) abuts against one side of the fixing rod (25). A second gear (27) is connected to one side of the guide rod (26). A third gear (28) meshes with one side of the second gear (27). A positioning rod (29) meshes with one side of the third gear (28). A threaded hole is provided at the connection between the device body (11) and the bottom end of the support pile (21). The bottom end of the support pile (21) is threaded and meshes with the threaded hole opened in the device body (11). A groove is opened on one side of the top of the support pile (21). A bearing seat is provided on one side of the first gear (22) and inserted into it. Inside the groove at the top of the support pile (21), the first mold (13) has through slots on both sides and the inner wall of the through slots is provided with teeth that mesh with the first gear (22). One end of the wheel (24) is movably connected to one side of the outer wall of the through slot of the first mold (13). The guide rod (26) is divided into guide rod one and guide rod two. One side of the second gear (27) is connected to guide rod one, and one side of the third gear (28) is connected to guide rod two. The fixing rod (25) abuts against the third gear (27). 8) On one side of the connected guide rod (26), the third gear (28) is provided with two sets, one of which meshes with the inside of the positioning rod (29). The second gear (27) and the third gear (28) are provided with bearing seats at one end and connected to the inner wall of the through groove opened in the first mold (13). The inner wall of the through groove opened in the first mold (13) is provided with a slot hole. The positioning rod (29) is inserted into the slot hole opened in the first mold (13) and one side meshes with the third gear (28).

2. The forging equipment for a large-diameter input shaft according to claim 1, characterized in that: The texture on the bottom surface of the first mold (13) is the same as the surface shape of the second mold (14), and the bottom surface shape of the second mold (14) is the same as that of the first mold (13).

3. The forging and processing equipment for a large-diameter input shaft according to claim 1, characterized in that: The height of the first mold (13) and the second mold (14) is greater than 20mm on both sides, the gap on one side is 0.3mm, the draft angle is 3° on both sides and 1.5° on one side, and the root corner is rounded. Each side of the first mold (13) and the second mold (14) is provided with a set of ejector rods (16) and each set of ejector rods (16) consists of two rods.

4. The forging and processing equipment for a large-diameter input shaft according to claim 1, characterized in that: The second mold (14) is internally connected to a support structure (3), which includes a fixing block (31). One end of the fixing block (31) is fixedly connected to a limit post (32). A support rod (33) is inserted inside the limit post (32). A hinge rod (34) is inserted inside the support rod (33). A positioning block (35) is sleeved on the outer wall of one end of the support rod (33). A connecting shaft (36) is connected inside the positioning block (35). Spring rods (37) are connected to both sides of the support rod (33).

5. The forging and processing equipment for a large-diameter input shaft according to claim 4, characterized in that: The support rod (33) has a through hole at its bottom end, the limiting post (32) is concave and has a through hole, and the hinge rod (34) is inserted into the through hole and the through hole to make the limiting post (32) and the support rod (33) movably connected.

6. The forging and processing equipment for a large-diameter input shaft according to claim 4, characterized in that: The positioning block (35) has a groove on one side. The top end of the support rod (33) is inserted into the groove of the positioning block (35) and is movably connected to the connecting shaft (36). One end of the connecting shaft (36) is fixedly connected to one side of the inner wall of the groove of the positioning block (35). A limiting groove is opened on one side of the top material rod (16). The shape of the positioning block (35) is the same as the limiting groove opened on the top material rod (16).

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