Forging die and forging method for vehicle driving front axle half shaft

Abstract

The invention relates to the technical field of forging dies, in particular to a vehicle driving front axle half shaft forging die and a forging method.The vehicle driving front axle half shaft forging die comprises a base and a shell, and further comprises an operation table, a plurality of lower dies, a plurality of upper dies, a plurality of stamping and forging assemblies, a plurality of push plates, a plurality of ejection assemblies and a synchronous driving assembly; in order to simultaneously punch and forge a plurality of half shaft blanks and independently add and take out the blanks, the synchronous driving assembly simultaneously drives the plurality of punching and forging assemblies to work and forge the plurality of blanks, and after one half shaft is forged, the upper die at the top of the half shaft stops working and ascends, so that the blank is forged. The other upper dies continue to work, meanwhile, the push plate pushes the lower die to move and is matched with the ejection assembly to eject one end of the lower die and enable the lower die to slide out of the shell, and therefore it is guaranteed that materials can be conveniently taken and placed under the condition that forging of other blanks is not affected, and the machining precision is improved.

Description

Technical Field

[0001] The invention relates to the technical field of forging dies, and in particular to a forging die and a forging method for a front drive axle half shaft of a vehicle. Background Art

[0002] Axles are components of the vehicle's transmission system. They transmit power between the vehicle's differential and the drive wheels, allowing the wheels to turn. Taking a common front-engine, front-wheel drive vehicle as an example, the engine power first passes through the gearbox and then through the axles to the front wheels, driving the vehicle forward or backward. Axles are generally composed of shafts, universal joints and other parts. Universal joints allow the axles to effectively transmit power when the wheels bounce up and down and turn.

[0003] Die forging is a production process that uses a die cavity to forge a half-axle into shape. Its advantages lie in its high production efficiency and high precision, and it is suitable for mass production. The die used in the die forging process is the half-axle forging die.

[0004] For example, a forging stamping die for an automobile transmission shaft with a Chinese patent announcement number of CN116000233B includes a support frame, a die table, a fixed template, a mobile die frame, a strength self-adjusting stamping mechanism and a dry heat reduction type heat preservation storage mechanism. The die table is arranged on the upper wall of the support frame, the fixed template is arranged on the outer side of the support frame, the mobile die frame is arranged on the upper wall of the die table, the strength self-adjusting stamping mechanism is arranged on the mobile die frame, the dry heat reduction type heat preservation storage mechanism is arranged on both sides of the die table, and the strength self-adjusting stamping mechanism includes a fixed die mechanism, a strength self-variable die mechanism and a double-sided length extrusion mechanism. Although this scheme can forge multiple billets at the same time, it reduces the labor intensity of manual labor and improves the forging efficiency, but it is not convenient to control the forging time of the billets individually.

[0005] Since multiple billets forged in the same batch need to be taken and placed synchronously, the forging effects of different billets are different, which easily leads to the situation that some billets are over-stamped while others are not fully stamped. This not only affects the forging accuracy, but also requires more correction dimensions for subsequent processing, delaying the production time. To solve the above problems, it is necessary to stop stamping the billets that have been forged first, and wait in the mold for the later billets to be ejected synchronously. However, this will cause the billets that have been forged first to overcool, which will cause the organizational stress state and hardness of the billets to change, which is not conducive to subsequent processing, and may even cause oxidation reactions that affect accuracy and quality. Summary of the invention

[0006] The object of the present invention is to provide a forging die and forging method for a half-axle of a vehicle driving front axle, which can perform stamping and forging on a plurality of half-axle blanks at the same time and can add and remove blanks separately.

[0007] To achieve this object, the present invention adopts the following technical solutions: Provided is a forging die for a half-axle of a front drive axle for a vehicle, comprising a base and a shell, wherein the bottom of the shell is fixedly connected to the top of the base, and further comprising an operating table, a plurality of lower dies, a plurality of upper dies, a plurality of stamping and forging components, a plurality of push plates, a plurality of ejection components and a synchronous drive component. The bottom of the operating table passes through the top wall of the base and is fixedly connected thereto, a rotating shaft is fixedly connected to one end of the bottom of the lower die, a plurality of slide grooves are provided on the top of the operating table, the rotating shaft is slidably connected to the slide grooves, the push plate can be horizontally slidably installed on the operating table through the ejection component, one end of the push plate is in conflict with the lower die, the ejection component comprises a lifting mechanism, the lifting mechanism is installed on the operating table, the lifting mechanism is used to lift the other end of the lower die, the upper die is installed on the shell through the stamping and forging component, the synchronous drive component is installed on the shell, and the synchronous drive component is used to drive a plurality of stamping and forging components to work simultaneously.

[0008] Preferably, the stamping forging assembly includes a hydraulic rod, a support plate, a top plate, a pair of vertical rods and a pair of stamping springs. The top of the hydraulic rod is fixedly connected to the top wall of the shell, the bottom of the telescopic end of the hydraulic rod passes through the top plate and is fixedly connected to the top of the support plate, the top of the vertical rod is fixedly connected to the bottom of the top plate, the bottom of the vertical rod passes through the support plate and is fixedly connected to the top of the upper mold, the stamping spring is sleeved on the outer periphery of the vertical rod, one end of the stamping spring is fixedly connected to the bottom of the support plate, and the other end of the stamping spring is fixedly connected to the top of the upper mold.

[0009] Preferably, the synchronous drive assembly includes a motor, a pair of turntables and a plurality of push rods, one side of the motor is fixedly connected to the shell, the two turntables are rotatably connected to the inner walls of the shell on both sides, the output shaft of the motor passes through the side wall of the shell and is coaxially connected to one of the turntables, the plurality of push rods are distributed in a circle between the two turntables, the two ends of the push rods are fixedly connected to the opposite sides of the two turntables, and the top of the push rods is in conflict with the bottom of the top plate.

[0010] Preferably, the synchronous drive assembly also includes a transmission rod, a plurality of first bevel gears, a plurality of second bevel gears, a plurality of first fixed rods and a pair of sprockets. The two sides of the rotating rod are respectively rotatably connected to the inner walls of the two sides of the shell, the first bevel gear is coaxially connected to the outer periphery of the rotating rod, the second bevel gear and the first bevel gear are meshed with each other, the first fixed rod is rotatably installed on the operating table, one end of the first fixed rod is coaxially connected to the second bevel gear, and the other end of the first fixed rod is plug-fitted with the lower mold, the two sprockets are respectively coaxially connected to the outer periphery of the transmission rod and the outer periphery of one of the turntables, and the two sprockets are driven by a chain.

[0011] Preferably, a cavity is provided on the top of the operating table, and the lifting mechanism includes a slider, a rotating rod, a slide rail and a first spring, the slider is slidably connected to the cavity, one end of the rotating rod is rotatably connected to one end of the slider, the other end of the rotating rod is slidably connected to the slide rail, the top of the slide rail is fixedly connected to the end of the bottom of the lower mold away from the rotating shaft, one end of the first spring is fixedly connected to the inner wall of the cavity, the other end of the first spring is fixedly connected to the other end of the slider, and a protrusion is fixedly connected to the top of the slider close to the rotating rod, and the bottom wall of the protrusion is an inclined structure and conflicts with the top of the rotating rod.

[0012] Preferably, a short die is provided on one side of the lower die, the interior of the short die is connected with the interior of the lower die, a second fixed rod is rotatably connected to the inner wall of the lower die, and the short die can be horizontally movably installed on the operating table. When the first fixed rod is inserted into one end of the lower die, the short die and the other end of the lower die fit each other, and multiple billets can be rotationally forged. When one end of the lower die extends out of the shell, the short die is located at the bottom of the lower die and is separated from the lower die.

[0013] Preferably, the ejection assembly also includes a pair of screws, a pair of connecting plates, a pair of spur gears, a pair of racks and a connecting rod. The screw is rotatably installed at the bottom of the operating table, one side of the connecting plate is threadedly connected to the screw, the connecting plate passes through the operating table and is slidably connected thereto, the tops of the two connecting plates are respectively fixedly connected to the bottom of the push plate and the bottom of the short mold, the spur gear is coaxially connected to one side of the screw, the two racks are respectively installed on both sides of the connecting rod so as to be able to rotate vertically, the racks and the spur gears are meshed with each other, and the top of the connecting rod passes through the operating table and is fixedly connected to the bottom of the support plate.

[0014] Preferably, both sides of the connecting rod are provided with empty slots, the bottom end of the bottom rack is rotatably connected to the inner wall of one of the empty slots, and the top end of the top rack is rotatably connected to the inner wall of the other empty slot, and the ejection assembly also includes two pairs of second springs, one end of the second spring is fixedly connected to the inner wall of the empty slot, and the other end of the second spring is fixedly connected to the rack.

[0015] Preferably, a plurality of square grooves are opened at one end of the shell, and a plurality of partitions are hinged at one end of the shell, and the partitions are in contact with the inner walls of the square grooves. The ejection assembly also includes a plurality of torsion springs and a plurality of abutment plates, and the torsion springs are sleeved on the outer periphery of the bottom of the partitions. One end of the torsion spring is fixedly connected to the shell, and the other end of the torsion spring is fixedly connected to the partition, and the bottom of the abutment plate is fixedly connected to the top of the short mold, and one end of the abutment plate is in contact with the bottom of the partition.

[0016] The present invention also provides a forging method for a forging die for a front drive axle half-axle of a vehicle, comprising the following steps: step one: placing a plurality of blanks in a plurality of lower dies respectively, and clamping the blanks by a first fixing rod and a second fixing rod; step two: driving a plurality of stamping and forging assemblies to work by a synchronous driving assembly arranged on a shell, wherein the stamping and forging assembly drives an upper die to quickly strike the blank downward, and at the same time drives the blank to rotate in a lower die, so that uniform stamping and forging can be performed, and a plurality of half-axles can be forged at the same time; step three: the stamping and forging assembly is arranged on the shell, and can drive the upper die to move up and down, so that the upper die is raised to be separated from the synchronous driving assembly, and can stop forging, so as to facilitate separate material removal; step four: an ejection assembly is arranged on the base, and can open the partition on the shell while the upper die is raised, and lift one end of the lower die and push it out of the square groove, so as to facilitate the removal of the blank.

[0017] Beneficial effects of the present invention: 1. When forging, the present invention drives multiple stamping and forging components to work at the same time through the synchronous driving component. The stamping and forging component drives the upper die to quickly hit the blank downward, and drives the blank to rotate in the lower die, so that uniform stamping and forging can be performed, and multiple half-axles can be forged at the same time. When the forging of one of the half-axles is completed, the upper die on its top stops working and rises, and the remaining upper dies continue to work. At the same time, the push plate pushes the lower die to move and slide it out of the shell, which can ensure that the material can be easily taken out without affecting the forging of the remaining blanks, thereby improving the processing accuracy.

[0018] 2. When taking out the blank, the push plate pushes the lower mold to move away from the first fixed rod and separate from it, and then the lower mold continues to move and squeezes the rotating rod, so that the end of the rotating rod in contact with the guide rod rotates upward around the slider until the top of the rotating rod and the bottom of the protrusion collide with each other. At this time, the lifted end of the lower mold is aligned with the square groove on the shell. As the lower mold continues to move, the first spring is compressed. Due to the large mass of the blank, one end of the lower mold is lifted and extends out of the square groove of the shell, which can further facilitate the taking and placing of materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 The three-dimensional structure of the present invention is shown in FIG. Figure 1 .

[0021] Figure 2 The three-dimensional structure of the present invention is shown in FIG. Figure 2 .

[0022] Figure 3 The base and shell structure of the present invention are sectional views Figure 1 .

[0023] Figure 4 The base and shell structure of the present invention are sectional views Figure 2 .

[0024] Figure 5 It is a cross-sectional view of the operating table structure of the present invention.

[0025] Figure 6 It is a structural schematic diagram of the synchronous drive component of the present invention.

[0026] Figure 7 It is a structural exploded view of the lifting mechanism of the present invention.

[0027] Figure 8 It is a structural breakdown diagram of the stamping and forging assembly of the present invention.

[0028] Fig. 9 It is a structural exploded view of the synchronous drive assembly of the present invention.

[0029] Fig.10 yes Figure 3 A magnified view of the structure at center.

[0030] In the figure: 1. Base; 10. Shell; 100. Square groove; 11. Operation table; 110. Slide groove; 111. Cavity; 12. Lower mold; 120. Rotating shaft; 13. Upper mold; 14. Push plate; 15. Short mold; 16. Second fixing rod; 17. Partition plate; 2. Stamping forging assembly; 20. Hydraulic rod; 21. Support plate; 22. Top plate; 23. Vertical rod; 24. Stamping spring; 3. Ejector assembly; 30. Lifting mechanism; 300. Sliding block; 301. Bump; 302. Rotating rod; 303. Slide rail; 304. First spring; 31. Screw rod; 32. Connecting plate; 33. Spur gear; 34. Rack; 35. Connecting rod; 350. Empty slot; 36. Second spring; 37. Torsion spring; 38. Abutment plate; 4. Synchronous drive assembly; 40. Motor; 41. Turntable; 42. Push rod; 43. Transmission rod; 44. First bevel gear; 45. Second bevel gear; 46. First fixed rod; 47. Sprocket. DETAILED DESCRIPTION

[0031] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0032] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0033] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0034] In the description of the present invention, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] like Figures 1 to 10 As shown: A forging die for a front drive axle half shaft of a vehicle comprises a base 1 and a shell 10. The bottom of the shell 10 is fixedly connected to the top of the base 1. The base 1 and the shell 10 are used to support the forging die. The shell 10 can also play a sealing role to prevent the blank from cooling quickly and to protect workers from being burned by high temperature. It also includes an operating table 11, multiple lower molds 12, multiple upper molds 13, multiple stamping and forging components 2, multiple push plates 14, multiple ejector components 3 and a synchronous drive component 4. The bottom of the operating table 11 passes through the top wall of the base 1 and is fixedly connected thereto. One end of the bottom of the lower mold 12 is fixedly connected to a rotating shaft 120. The top of the operating table 11 is provided with multiple slide grooves 110. The rotating shaft 120 is slidably connected to the slide groove 110. The push plate 14 can be horizontally slidably installed on the operating table 11 through the ejector component 3. One end of the push plate 14 is in conflict with the lower mold 12. The ejector component 3 includes a lifting mechanism 30. The lifting mechanism 30 is installed on the operating table 11. The lifting mechanism 30 is used to lift the other end of the lower mold 12. The upper mold 13 is installed on the shell 10 through the stamping and forging component 2. The synchronous drive component 4 is installed on the shell 10. The synchronous drive component 4 is used to drive multiple stamping and forging components 2 to work simultaneously. During forging, the blank is placed in the lower die 12, and the synchronous drive assembly 4 drives multiple stamping and forging assemblies 2 to work at the same time. The stamping and forging assembly 2 drives the upper die 13 to quickly hit the blank downward, and drives the blank to rotate in the lower die 12, so that uniform stamping and forging can be performed, and multiple half-axles can be forged at the same time. When the forging of one of the half-axles is completed, the upper die 13 on its top stops working and rises under the drive of the stamping and forging assembly 2, and the remaining upper dies 13 continue to work, and the push plate 14 pushes the lower die 12 to move, and cooperates with the ejection assembly 3 to lift one end of the lower die 12 and slide it out of the housing 10, so as to facilitate material removal, thereby ensuring that the material can be easily removed and placed without affecting the forging of the remaining blanks, thereby improving the processing accuracy.

[0036] like Figures 1 to 8 As shown: The stamping forging assembly 2 includes a hydraulic rod 20, a support plate 21, a top plate 22, a pair of vertical rods 23 and a pair of stamping springs 24. The top of the hydraulic rod 20 is fixedly connected to the top wall of the shell 10, the bottom of the telescopic end of the hydraulic rod 20 passes through the top plate 22 and is fixedly connected to the top of the support plate 21, the top of the vertical rod 23 is fixedly connected to the bottom of the top plate 22, the bottom of the vertical rod 23 passes through the support plate 21 and is fixedly connected to the top of the upper mold 13, the stamping spring 24 is sleeved on the outer periphery of the vertical rod 23, one end of the stamping spring 24 is fixedly connected to the bottom of the support plate 21, and the other end of the stamping spring 24 is fixedly connected to the top of the upper mold 13. The hydraulic rod 20 is operated to drive the support plate 21 and the upper die 13 to move down to fit with the lower die 12, and then the top plate 22 is lifted, and the upper die 13 is driven to rise a certain distance through the vertical rod 23. At this time, the stamping spring 24 is compressed, and then the top plate 22 is released. The stamping spring 24 rebounds and pushes the upper die 13 to fall quickly and forge the blank in the lower die 12 to perform the half-axis forging process.

[0037] like Figures 1 to 9 As shown: The synchronous drive assembly 4 includes a motor 40, a pair of turntables 41 and a plurality of push rods 42. One side of the motor 40 is fixedly connected to the shell 10. The two turntables 41 are rotatably connected to the inner walls of the shell 10 on both sides. The output shaft of the motor 40 passes through the side wall of the shell 10 and is coaxially connected to one of the turntables 41. The plurality of push rods 42 are distributed in a circle between the two turntables 41. The two ends of the push rods 42 are fixedly connected to the opposite sides of the two turntables 41, and the top of the push rod 42 is in conflict with the bottom of the top plate 22. The motor 40 is powered on and its output shaft drives one of the turntables 41 to rotate. Through the push rod 42 between the two turntables 41, the two turntables 41 are rotated at the same time and drive one push rod 42 to make a circular motion between the other turntables 41. One of the push rods 42 lifts multiple top plates 22 at the same time, and the push rod 42 is then separated from the top plate 22. The top plate 22 and the upper die 13 fall down to complete a forging, and then the other push rod 42 continues to lift the top plate 22. This cycle drives multiple upper dies 13 to forge multiple billets at the same time. Since the top plate 22 is always above the push rod 42, it is only necessary to drive the hydraulic rod 20 to move the support plate 21 upward to separate the top plate 22 from the push rod 42 to stop one of the upper dies 13 from forging the billet.

[0038] like Figures 1 to 9 As shown: The synchronous drive assembly 4 also includes a transmission rod 43, multiple first bevel gears 44, multiple second bevel gears 45, multiple first fixed rods 46 and a pair of sprockets 47. The two sides of the rotating rod 302 are rotatably connected to the inner walls of the shell 10 on both sides, the first bevel gear 44 is coaxially connected to the outer periphery of the rotating rod 302, the second bevel gear 45 is meshed with the first bevel gear 44, the first fixed rod 46 is rotatably installed on the operating table 11, one end of the first fixed rod 46 is coaxially connected to the second bevel gear 45, and the other end of the first fixed rod 46 is plugged into the lower mold 12, the two sprockets 47 are coaxially connected to the outer periphery of the transmission rod 43 and one of the turntables 41, and the two sprockets 47 are driven by a chain. When the blank is stamped and forged, the blank is located in the lower die 12, and the two ends of the blank are squeezed and fixed by the first fixed rod 46 and the second fixed rod 16. When the turntable 41 rotates, one of the sprockets 47 is driven to rotate, and the chain transmission between the two sprockets 47 drives the transmission rod 43 to rotate, so that the first bevel gear 44 rotates, and the meshing transmission between the first bevel gear 44 and the second bevel gear 45 drives the first fixed rod 46 to rotate, so that the blank rotates in the lower die 12, and the periphery of the blank is evenly forged.

[0039] like Figures 1 to 7 As shown: A cavity 111 is provided at the top of the operating table 11, and the lifting mechanism 30 includes a slider 300, a rotating rod 302, a slide rail 303 and a first spring 304. The slider 300 is slidably connected to the cavity 111, one end of the rotating rod 302 is rotatably connected to one end of the slider 300, and the other end of the rotating rod 302 is slidably connected to the slide rail 303. The top of the slide rail 303 is fixedly connected to the end of the bottom of the lower mold 12 away from the rotating shaft 120, one end of the first spring 304 is fixedly connected to the inner wall of the cavity 111, and the other end of the first spring 304 is fixedly connected to the other end of the slider 300. A protrusion 301 is fixedly connected to the top of the end of the slider 300 close to the rotating rod 302, and the bottom wall of the protrusion 301 is a slope structure and conflicts with the top of the rotating rod 302. When the lower mold 12 is pushed to one end away from the first fixed rod 46, one end of the rotating rod 302 slides along one end of the guide rod to the other end, thereby separating the first fixed rod 46 from the lower mold 12 to prevent the lower mold 12 from colliding with the first fixed rod 46 when rotating. Then the lower mold 12 continues to move and squeeze the rotating rod 302, so that the end of the rotating rod 302 in contact with the guide rod rotates upward around the slider 300 until the top of the rotating rod 302 and the bottom of the protrusion 301 collide with each other. At this time, the lifted end of the lower mold 12 is aligned with the square groove 100 on the shell 10. As the lower mold 12 continues to move, the first spring 304 is compressed. Due to the large mass of the blank, one end of the lower mold 12 is lifted and extends out of the square groove 100 from the shell 10, which can further facilitate the taking and placing of materials.

[0040] like Figures 1 to 7 As shown: A short die 15 is provided on one side of the lower die 12, and the interior of the short die 15 is interconnected with the interior of the lower die 12. The inner wall of the lower die 12 is rotatably connected with a second fixing rod 16. The short die 15 can be installed on the operating table 11 so as to be horizontally movable. When the lower die 12 is rotated to a horizontal state, the short die 15 is horizontally moved to fit with the lower die 12. At this time, one end of the blank is inserted into the short die 15 and conflicts with the second fixing rod 16, so as to cooperate with the first fixing rod 46 to clamp the blank, so as to facilitate the rotation of the blank during forging. Before the lower die is lifted, the short die 15 moves first and separates from the lower die 12 to prevent the conflict from hindering the operation of the lifting mechanism 30. When the first fixing rod 46 is inserted into one end of the lower die 12, the short die 15 and the other end of the lower die 12 fit each other, and the blank can be rotated forged. When one end of the lower die 12 extends out of the housing 10, the short die 15 is located at the bottom of the lower die 12 and is separated from the lower die 12.

[0041] like Figures 1 to 7 As shown: The ejection assembly 3 also includes a pair of screws 31, a pair of connecting plates 32, a pair of spur gears 33, a pair of racks 34 and a connecting rod 35. The screw 31 is rotatably installed at the bottom of the operating table 11, one side of the connecting plate 32 is threadedly connected to the screw 31, the connecting plate 32 passes through the operating table 11 and is slidably connected thereto, the tops of the two connecting plates 32 are respectively fixedly connected to the bottom of the push plate 14 and the bottom of the short mold 15, the spur gear 33 is coaxially connected to one side of the screw 31, and the two racks 34 are respectively installed on both sides of the connecting rod 35 so as to be able to rotate vertically. The racks 34 and the spur gears 33 are meshed with each other, and the top of the connecting rod 35 passes through the operating table 11 and is fixedly connected to the bottom of the support plate 21. When the forging is completed, the support plate 21 rises, driving the connecting rod 35 and the two racks 34 to move upward, and the upper mold 13 is first separated from the lower mold 12, and then the meshing transmission between the rack 34 and the spur gear 33 drives the two screws 31 to rotate respectively, and the threaded transmission between the screw 31 and the connecting plate 32 drives the push plate 14 and the short mold 15 to move horizontally respectively. In conjunction with the lifting mechanism 30, one end of the lower mold 12 can be moved out of the shell 10 to facilitate material removal. Conversely, the support plate 21 descends to drive the lower mold 12 to return to its original position to facilitate forging.

[0042] like Figures 1 to 8 As shown: Empty slots 350 are provided on both sides of the connecting rod 35, the bottom end of the bottom rack 34 is rotatably connected to the inner wall of one of the empty slots 350, and the top end of the top rack 34 is rotatably connected to the inner wall of the other empty slot 350. The ejection assembly 3 also includes two pairs of second springs 36, one end of the second spring 36 is fixedly connected to the inner wall of the empty slot 350, and the other end of the second spring 36 is fixedly connected to the rack 34. The rack 34 moves up and down with the connecting rod 35. When one end of the rack 34 contacts the spur gear 33, the spur gear 33 squeezes the rack 34 to make it rotate around the other end and enter the empty groove 350. At this time, the second spring 36 is compressed to prevent the two from conflicting with each other and being unable to move. As the rack 34 continues to move, the second spring 36 rebounds and pushes the rack 34 to reset, ensuring that the rack 34 can mesh smoothly with the spur gear 33 during the movement. In addition, the position of the rack 34 used to drive the short mold 15 to move is higher than the rack 34 used to drive the push plate 14 to move, so that the short mold 15 is first translated and separated from the lower mold 12 before the lower mold 12 moves, avoiding hindering the movement of the lower mold 12.

[0043] like Figures 1 to 10 As shown: A plurality of square grooves 100 are provided at one end of the shell 10, and a plurality of partitions 17 are hinged at one end of the shell 10. The partitions 17 fit the inner walls of the square grooves 100. The ejection assembly 3 also includes a plurality of torsion springs 37 and a plurality of abutment plates 38. The torsion springs 37 are sleeved on the outer periphery of the bottom of the partitions 17. One end of the torsion springs 37 is fixedly connected to the shell 10, and the other end of the torsion springs 37 is fixedly connected to the partition 17. The bottom of the abutment plate 38 is fixedly connected to the top of the short mold 15, and one end of the abutment plate 38 abuts against the bottom of the partition 17. During the forging process, the partition 17 is used to close the square groove 100 to prevent the internal temperature of the shell 10 from leaking out. When it is necessary to take the material, as the short mold 15 moves, the back plate 38 pushes the partition 17 to rotate and open its top, and the torsion spring 37 is twisted, so that the square groove 100 is opened to facilitate the extension of the lower mold 12. Subsequently, the short mold 15 is reset, the back plate 38 is separated from the partition 17, and the rotation of the torsion spring 37 can drive the rotation, and the partition 17 re-closes the square groove 100.

[0044] The present embodiment also provides a forging method for a forging die for a front drive axle half-axle of a vehicle, comprising the following steps: step one: placing a plurality of blanks in a plurality of lower dies 12 respectively, and clamping the blanks by a first fixing rod 46 and a second fixing rod 16; step two: driving a plurality of stamping and forging assemblies 2 to work by a synchronous drive assembly 4 arranged on the housing 10, the stamping and forging assembly 2 drives the upper die 13 to quickly impact the blank downward, and at the same time drives the blank to rotate in the lower die 12, so that uniform stamping and forging can be performed, and a plurality of half-axles can be forged at the same time; step three: the stamping and forging assembly 2 is arranged on the housing 10, and can drive the upper die 13 to move up and down, so that the upper die 13 is raised to be separated from the synchronous drive assembly 4, and can stop forging, so as to facilitate separate material removal; step four: an ejection assembly 3 is arranged on the base 1, which can open the partition 17 on the housing 10 while the upper die 13 is raised, and lift one end of the lower die 12 and push it out of the square groove 100, so as to facilitate the removal of the blank.

[0045] It should be noted that the above specific implementations are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art should understand that various modifications, equivalent substitutions, changes, etc. can be made to the present invention. However, as long as these changes do not deviate from the spirit of the present invention, they should be within the scope of protection of the present invention. In addition, some terms used in the specification and claims of this application are not limiting, but are only for the convenience of clearly describing the positional relationship and function between the various components.

Claims

1. A forging die for a front drive axle half shaft for a vehicle, comprising a base (1) and a shell (10), wherein the bottom of the shell (10) is fixedly connected to the top of the base (1), and characterized in that: The machine also comprises an operating table (11), a plurality of lower dies (12), a plurality of upper dies (13), a plurality of stamping and forging components (2), a plurality of push plates (14), a plurality of ejection components (3) and a synchronous drive component (4); the bottom of the operating table (11) passes through the top wall of the base (1) and is fixedly connected thereto; a rotating shaft (120) is fixedly connected to one end of the bottom of the lower die (12); a plurality of slide grooves (110) are provided on the top of the operating table (11); the rotating shafts (120) are slidably connected to the slide grooves (110); the push plates (14) are driven by the ejection components (3) to move the push plates (14) through the ejection components (3); The push plate (14) is mounted on the operating table (11) in a horizontally slidable manner, one end of the push plate (14) is in contact with the lower die (12), the ejection assembly (3) includes a lifting mechanism (30), the lifting mechanism (30) is mounted on the operating table (11), and the lifting mechanism (30) is used to lift the other end of the lower die (12), the upper die (13) is mounted on the housing (10) through the stamping and forging assembly (2), and the synchronous drive assembly (4) is mounted on the housing (10), and the synchronous drive assembly (4) is used to drive multiple stamping and forging assemblies (2) to work simultaneously.

2. The forging die for a front drive axle half shaft of a vehicle according to claim 1, characterized in that: The stamping forging assembly (2) comprises a hydraulic rod (20), a support plate (21), a top plate (22), a pair of vertical rods (23) and a pair of stamping springs (24); the top of the hydraulic rod (20) is fixedly connected to the top wall of the housing (10); the bottom of the telescopic end of the hydraulic rod (20) passes through the top plate (22) and is fixedly connected to the top of the support plate (21); the top of the vertical rod (23) is fixedly connected to the bottom of the top plate (22); the bottom of the vertical rod (23) passes through the support plate (21) and is fixedly connected to the top of the upper die (13); the stamping spring (24) is sleeved on the outer periphery of the vertical rod (23); one end of the stamping spring (24) is fixedly connected to the bottom of the support plate (21); and the other end of the stamping spring (24) is fixedly connected to the top of the upper die (13).

3. The forging die for a front drive axle half shaft of a vehicle according to claim 2, characterized in that: The synchronous drive assembly (4) comprises a motor (40), a pair of rotating disks (41) and a plurality of push rods (42); one side of the motor (40) is fixedly connected to the housing (10); the two rotating disks (41) are respectively rotatably connected to the inner walls of the housing (10) on both sides; the output shaft of the motor (40) passes through the side wall of the housing (10) and is coaxially connected to one of the rotating disks (41); the plurality of push rods (42) are circumferentially distributed between the two rotating disks (41); two ends of the push rods (42) are respectively fixedly connected to opposite sides of the two rotating disks (41); and the top of the push rod (42) and the bottom of the top plate (22) are in contact with each other.

4. The forging die for a front drive axle half shaft of a vehicle according to claim 3, characterized in that: The synchronous drive assembly (4) further comprises a transmission rod (43), a plurality of first bevel gears (44), a plurality of second bevel gears (45), a plurality of first fixed rods (46) and a pair of sprocket wheels (47); the two sides of the rotating rod (302) are respectively rotatably connected to the inner walls of the housing (10); the first bevel gear (44) is coaxially connected to the outer periphery of the rotating rod (302); the second bevel gear (45) and the first bevel gear (44) are meshed with each other; the first fixed rod (46) is rotatably mounted on the operating table (11); one end of the first fixed rod (46) is coaxially connected to the second bevel gear (45); the other end of the first fixed rod (46) is plug-fitted with the lower mold (12); the two sprocket wheels (47) are respectively coaxially connected to the outer periphery of the transmission rod (43) and the outer periphery of one of the rotating disks (41); and the two sprocket wheels (47) are driven by a chain.

5. The forging die for a front drive axle half shaft of a vehicle according to claim 1, characterized in that: A cavity (111) is provided at the top of the operating table (11). The lifting mechanism (30) comprises a slider (300), a rotating rod (302), a slide rail (303) and a first spring (304). The slider (300) is slidably connected to the cavity (111). One end of the rotating rod (302) is rotatably connected to one end of the slider (300). The other end of the rotating rod (302) is slidably connected to the slide rail (303). The top of the slide rail (303) is fixedly connected to one end of the bottom of the lower mold (12) away from the rotating shaft (120). One end of the first spring (304) is fixedly connected to the inner wall of the cavity (111). The other end of the first spring (304) is fixedly connected to the other end of the slider (300). A protrusion (301) is fixedly connected to the top of one end of the slider (300) close to the rotating rod (302). The bottom wall of the protrusion (301) is an inclined structure and contacts the top of the rotating rod (302).

6. The forging die for a front drive axle half shaft of a vehicle according to claim 2, characterized in that: A short mold (15) is provided on one side of the lower mold (12); the interior of the short mold (15) is communicated with the interior of the lower mold (12); a second fixing rod (16) is rotatably connected to the inner wall of the lower mold (12); and the short mold (15) is horizontally movably mounted on the operating table (11); When the first fixing rod (46) is inserted into one end of the lower die (12), the short die (15) and the other end of the lower die (12) fit each other, so that the blank can be rotationally forged; When one end of the lower mold (12) extends out of the housing (10), the short mold (15) is located at the bottom of the lower mold (12) and is separated from the lower mold (12).

7. The forging die for a front drive axle half shaft of a vehicle according to claim 6, characterized in that: The ejection assembly (3) further comprises a pair of screw rods (31), a pair of connecting plates (32), a pair of spur gears (33), a pair of racks (34) and a connecting rod (35). The screw rod (31) is rotatably mounted on the bottom of the operating table (11). One side of the connecting plate (32) is threadedly connected to the screw rod (31). The connecting plate (32) passes through the operating table (11) and is slidably connected thereto. The tops of the two connecting plates (32) are respectively fixedly connected to the bottom of the push plate (14) and the bottom of the short mold (15). The spur gear (33) is coaxially connected to one side of the screw rod (31). The two racks (34) are respectively mounted on both sides of the connecting rod (35) so as to be vertically rotatable. The racks (34) and the spur gears (33) are meshed with each other. The top of the connecting rod (35) passes through the operating table (11) and is fixedly connected to the bottom of the support plate (21).

8. The forging die for a front drive axle half shaft of a vehicle according to claim 7, characterized in that: Both sides of the connecting rod (35) are provided with empty slots (350), the bottom end of the bottom rack (34) is rotatably connected to the inner wall of one of the empty slots (350), and the top end of the top rack (34) is rotatably connected to the inner wall of the other empty slot (350). The ejection assembly (3) further includes two pairs of second springs (36), one end of the second spring (36) is fixedly connected to the inner wall of the empty slot (350), and the other end of the second spring (36) is fixedly connected to the rack (34).

9. The forging die for a front drive axle half shaft of a vehicle according to claim 6, characterized in that: A plurality of square grooves (100) are formed at one end of the shell (10), and a plurality of partitions (17) are hingedly connected to one end of the shell (10). The partitions (17) and the inner walls of the square grooves (100) are in contact with each other. The ejection assembly (3) further comprises a plurality of torsion springs (37) and a plurality of abutment plates (38). The torsion springs (37) are sleeved around the bottom periphery of the partitions (17). One end of the torsion springs (37) is fixedly connected to the shell (10), and the other end of the torsion springs (37) is fixedly connected to the partitions (17). The bottom of the abutment plate (38) is fixedly connected to the top of the short mold (15), and one end of the abutment plate (38) abuts against the bottom of the partition (17).

10. A forging method for a forging die for a front drive axle half shaft of a vehicle, characterized in that: The steps include: Step 1: placing a plurality of blanks inside a plurality of lower molds (12) respectively, and clamping the blanks by a first fixing rod (46) and a second fixing rod (16); Step 2: The synchronous driving assembly (4) provided on the housing (10) drives the plurality of stamping and forging assemblies (2) to work, and the stamping and forging assemblies (2) drive the upper die (13) to strike the blank downward rapidly, and at the same time drive the blank to rotate in the lower die (12), so that uniform stamping and forging can be performed, and a plurality of half shafts can be forged at the same time; Step 3: The stamping forging assembly (2) is disposed on the housing (10) and is capable of driving the upper die (13) to move up and down, so that the upper die (13) is raised to be separated from the synchronous driving assembly (4), and the forging can be stopped, so as to facilitate the separate removal of the material; Step 4: An ejection assembly (3) is provided on the base (1), which can open the partition (17) on the shell (10) while the upper mold (13) is raised, and lift one end of the lower mold (12) and push it out of the square groove (100), so as to facilitate the removal of the blank.

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