Automobile wheel hub bearing unit ring accessories flange and its process flow

Abstract

The present invention belongs to the field of automotive parts manufacturing technology, and specifically relates to an automotive wheel hub bearing unit ring accessory flange and its process flow, including a finished flange, the lower surface edge of which is integrally forged with a reinforcing extension, a hot forging machine, and a pre-forged semi-finished flange that has been pre-forged and formed and contains a primary perforation. The hot forging machine has a movable platen configured for lifting and lowering via a hydraulic cylinder assembled at the top, a secondary forming platen for forming the primary perforation being detachably assembled above the movable platen, a fixed die seat fixedly configured at the bottom of the hot forging machine, and transmission pipes rotatably mounted at both ends of the fixed die seat within the hot forging machine. The flange of the present invention has greater structural strength, and its manufacturing process can automatically complete the forming of perforations during forging, resulting in lower process costs, a fully automated forging process, and the mold inside the forging machine also having the characteristic of automatic change.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile parts manufacturing process, and in particular relates to an automobile hub bearing unit ferrule accessory flange and a process flow thereof. Background Art

[0002] A flange, also known as a flanged disc or flange, is a component that connects shafts and is used to connect pipe ends. Flanges are also used on equipment inlets and outlets, such as reducer flanges, to connect two pieces of equipment. A flange connection or flange joint is a removable connection consisting of a flange, a gasket, and bolts that form a combined sealing structure. The flanges have holes in them, and bolts secure the two flanges together. Gaskets are used to seal the flanges.

[0003] Problems with existing technologies:

[0004] In the existing flange production process, forging and punching are two independent processes, and are performed by two separate devices. For larger-diameter holes on the flange, the material strength of the corresponding drilling tool and the requirements for the drilling rig will be higher. In addition, if the semi-finished flange is punched, the thicker profile will also put huge working pressure on the punching equipment, and the requirements for the punching equipment are also very high. Therefore, the traditional flange production process requires the purchase of other more expensive high-strength equipment, and the economic cost of the production line is very expensive. Not only that, it also takes extra time in the profile transportation process, and the separate processes will also extend the production time.

[0005] Regarding the above problem, the easiest time to construct large holes is right after the flange is forged. At this time, the forging has not yet cooled and formed, making construction the easiest. However, existing hot forging machines do not have the function of punching and forming holes at the same time as the forging process. Summary of the Invention

[0006] The purpose of the present invention is to provide an automobile wheel hub bearing unit ring accessory flange and its process flow, which can automatically complete the perforation forming during forging, with lower process costs, fully automated forging process, and the internal mold of the forging machine also has the characteristic of automatic change.

[0007] The technical solutions adopted by the present invention are as follows:

[0008] The automobile wheel hub bearing unit ring accessory flange includes a finished flange, the lower surface edge of the finished flange is integrally formed with a reinforced extension body, and each end of the finished flange corresponding to the reinforced extension body is penetrated by a main through-hole, and the edge of the finished flange is penetrated by secondary through-holes in a ring array, the secondary through-holes and the main through-holes are arranged alternately, and the secondary through-holes are simultaneously located in the gaps at each end of the reinforced extension body, and the corners of the reinforced extension body are all provided with transition fillets.

[0009] The manufacturing process of the flange of the automobile hub bearing unit ring accessories is as follows:

[0010] S1: Place the bar into the fixed die seat, control the hydraulic cylinder to drive the movable platen downward for the first time, and during the first combination of the movable platen and the fixed die seat, the bar is initially forged and formed, and the part used to form the reinforcement extension body is also initially formed. In addition, the bottom end of the bar contacts the rectangular body and a rectangular groove is formed inward.

[0011] S2: Control the hydraulic cylinder to drive the movable platen to reset and move for the first time. During the process, the bottom end of the push rod is correspondingly inserted into the top opening. As the movable platen continues to reset, the secondary molding platen and the movable platen will move relative to each other. The movable platen and the secondary molding platen will eventually fit together. The hole forging rod will penetrate the movable platen and extend a part. During the fitting process, the inner support block will not be blocked by the secondary molding platen and will pop out under the action of spring 1. The inner support block will cooperate with the top push rod to clamp the secondary molding platen to ensure that the movable platen and the secondary molding platen are stably fitted together. At the same time, the oblique penetrating rod will penetrate into the oblique guide hole, and the sliding bodies at both ends will move backwards and simultaneously fit into the rod end grooves at the top of the inner rods at both ends.

[0012] S3: During the first reset and movement of the movable platen, the pushing mechanism located at the bottom inner side of the hot forging machine will push the push plate upwards, and with the cooperation of the push rod and the auxiliary rotator, the forging will be ejected upwards. When the auxiliary rotator moves upwards, the end of the push rod will move from the transition groove to the inclined groove. The auxiliary rotator will drive the forging to rotate while moving upwards, and the rotation angle is less than 180°. Then the pushing mechanism controls the reset of the push plate. At this time, the end of the push rod will be returned from the straight groove to the next transition groove. After the rotation, the forging is returned to the cavity of the fixed die base;

[0013] S4: Control the hydraulic cylinder to drive the movable platen downward for the second time. This time, the movable platen will move downward together with the inner rods at both ends, causing the inner rods to penetrate into the transmission tube. During the penetration process, the transmission tube will drive the gear to rotate. The engagement of the gear and the gear ring will eventually drive the inner ring seat to rotate inside the inner circular cavity. The rotation angle is also less than 180°. At this time, the wedge block will move to the lowest point of the sinker groove, causing the inner ring body to move downward together with the hole blocking columns and provide a forming perforation for the hole forging rod to penetrate.

[0014] S5: Control the hydraulic cylinder to drive the movable platen to continue to move downward. The movable platen carries the extended hole forging rod and combines with the fixed die base again to perform secondary forging on the forging. At this time, the hole forging rod will penetrate the forging and insert into the formed perforation. The part of the forging penetrated by the hole forging rod will form the main perforation.

[0015] S6: Control the hydraulic cylinder to drive the movable platen to reset and move for the second time. During this process, the inner ring seat resets and rotates, and the hole-blocking column will block the forming piercing hole again. Before the movable platen is reset for the second time, start the motor in advance, and under the guidance of the double-threaded screws on both sides, move the two push rods towards each other, so that the push rods move to the position corresponding to the second piercing opening. When the movable platen is reset for the second time, the push rods will pass through the second piercing opening and push the inner support block to re-embed into the interior of the top body. Finally, under the action of the second springs, the movable platen is separated from the secondary forming platen, and the sliding body will also be separated from the inner rod accordingly, thereby completing the initial forging work of a bar.

[0016] The manufacturing process for a flange for a hub bearing unit ring accessory includes a hot forging machine and a semi-finished flange that is initially forged and formed and includes a primary perforation. A movable platen is configured within the hot forging machine in a lifting manner via a hydraulic cylinder assembled at the top. A secondary forming platen, used for forming the primary perforation, is detachably assembled above the movable platen. A fixed die seat is fixedly disposed at the bottom of the hot forging machine. Transmission tubes are rotatably mounted within the hot forging machine and at both ends of the fixed die seat.

[0017] The top center of the movable template is integrally provided with a top body connected to the telescopic output end of the hydraulic cylinder, the secondary molding template is sleeved on the outer surface of the top body and the lower surface of the secondary molding template is array-mounted with hole forging rods that movably penetrate the movable template, the outer surface of the hole forging rod is sleeved with a second spring located between the movable template and the secondary molding template, the two ends of the movable template are slidably and symmetrically assembled with sliding bodies, and the interior of the sliding bodies are inclined with inclined guide holes, and the two ends of the lower surface of the secondary molding template are fixedly installed with oblique penetrating rods for inserting into the oblique guide holes, and top blocks are integrally provided on both sides of the top of the top body; inner support blocks for clamping the secondary molding template are embedded and movably installed on both sides of the interior of the top body, and a spring is connected between the inner wall of the inner support block and the inner wall of the top body;

[0018] The hole forging rod extends out before the movable plate contacts the bar material for the second time, and the inner support block pops out at this moment and is used to make the movable plate fit the secondary forming plate.

[0019] Support grooves are provided at both ends of the middle part of the secondary molding template, and a second through-hole is passed through the middle part of the support groove. Top openings are provided at both ends of the surface of the secondary molding template and on the same axis as the second through-hole, and a first through-hole is passed through the middle part of the top support block.

[0020] The inner top of the hot forging machine is symmetrically and slidingly assembled with a push rod through a fixed guide rail, and a screw tube is fixedly provided on both sides of the push rod. A motor is fixedly installed on the inner top of the hot forging machine, and the output ends of the two motors are fixedly assembled with a double-threaded screw, and the two push rods are symmetrically screwed to the two ends of the double-threaded screw through the screw tube;

[0021] After the movable template forges the bar for the first time, the end of the push rod is pushed into the top opening and is used to prevent the secondary molding template from continuing to move upward; after the movable template forges the bar for the second time, the push rod passes through the second through-opening and is used to push the inner support block into the top body.

[0022] The edge of the fixed die seat is provided with a forming through-hole in an array for the hole forging rod to extend into, the interior of the fixed die seat is provided with an inner circular cavity and the edge is provided with a side through-groove in an array, an inner ring body is movably installed inside the inner circular cavity, the upper surface of the inner ring body is fixedly provided with a hole-blocking column inserted into the forming through-hole in an array, and the lower surface of the inner ring body is fixedly provided with a wedge block in an array.

[0023] An inner ring seat is rotatably mounted inside the inner circular cavity and below the inner ring body, and an array of sinker grooves for embedding wedge blocks are provided on the surface of the inner ring seat, while a gear ring is integrally provided on the outside of the inner ring seat through an extension body passing through the side through-groove.

[0024] A gear meshing with the gear ring is fixedly installed in the middle of the transmission tube, a spiral groove is provided on the inner wall of the transmission tube, and an inner rod is movably inserted inside the transmission tube, a protrusion embedded in the spiral groove is fixedly provided on the outer wall of the bottom end of the inner rod, and a rod end groove for a sliding body to be embedded in the top side wall of the inner rod is provided, and the sliding body is embedded in the rod end groove before the movable template forges the bar for the second time.

[0025] A rotatable body for ejecting the forging is movably installed inside the bottom of the fixed die seat, and a rectangular body for temporarily forming a rectangular groove at the bottom of the forging is integrally provided on the top of the rotatable body. An outer wall of the rotatable body is provided with an inclined groove, a straight groove, and a transition groove, wherein the top ends of the straight grooves are connected to the top ends of the inclined grooves in a discontinuous manner, while the bottom ends of the inclined grooves are connected to the bottom ends of the straight grooves in a gradual manner, and the transition groove is connected to the top end of the inclined groove;

[0026] The outer wall of the bottom of the fixed die seat is fixedly provided with a side shell in an array, and a push rod is assembled in a three-telescopic manner inside the side shell through a built-in spring, and the end of the push rod is placed inside the transition groove when the bar is forged.

[0027] The bottom of the fixed mold base is movably assembled with a push plate, and a push rod for assisting the rotation connection of the rotator is installed on the center top of the push plate. A guide rod is installed on the edge of the push plate, and the guide rod is movably inserted into the bottom guide tube set at the bottom edge of the fixed mold base.

[0028] The technical effects achieved by the present invention are:

[0029] In the present invention, the size of the main through-hole is larger than that of the secondary through-hole. The reinforcing extension body is provided to increase the deformation resistance of the main through-hole when the bolt passes through the main through-hole, so as to provide the structural strength of the flange when the flange is used in combination with a bolt of larger size. In addition, the reinforcing extension body can also prevent the hole from being over-formed and causing the formation of a deformed hole when forging the main through-hole.

[0030] The process flow provided by the present invention enables the main through-hole with a larger aperture to be manufactured and formed during the initial forging process of the flange. By changing the process of drilling the hole to a successful forging process, the working pressure of the drilling equipment when drilling large-sized holes can be solved, and at the same time, the purchase of high-strength drilling equipment can be saved. Not only the drilling time and process of large-sized holes are saved, but also the economic cost required is indirectly reduced. In addition, for hot forging machines, the forging of large-sized holes has lower equipment requirements than the forging of small-sized holes, and the strength requirements of the punching components are lower. Compared with the purchase of more expensive high-strength drilling equipment, this economic cost is lower.

[0031] According to the present invention, when the movable plate forges the bar for the first time, the bar can be forged into a semi-finished product without perforations. When the movable plate forges the forging for the second time, the main perforations can be formed on the edge of the forging through the automatic combination of the secondary forming plate and the movable plate. During the two forging processes of the movable plate, the semi-finished flange with the main perforations can be produced. The movable plate can automatically complete the change of the punching component in the second forging process, and can finally be restored by a motor, so that the forging of the semi-finished flange has the characteristics of full automation. The mold for forging the semi-finished flange has the characteristics of automatic change, and the equipment has high flexibility and compact structure.

[0032] In the present invention, the forming perforation is blocked during the first forging of the bar material, which can avoid the situation where the forging is located at the main perforation and has abnormal shape during the first forging, and ensure that the flange is formed as preset. In addition, during the second forging of the forging, the hole-blocking column automatically leaves the forming perforation to provide space for the deepening of the hole forging rod, and the movement of the hole-blocking column utilizes the downward movement of the movable template as the power, and thus no additional power equipment is needed to drive the hole-blocking column to move. Under the premise of ensuring that the forging is fully automated, the investment in motor equipment can be reduced, and the economic cost of the total equipment is reduced.

[0033] According to the present invention, when the movable template is reset and moved for the first time, the forging will be lifted up, which can effectively prevent the part of the forging corresponding to the reinforced extension body from sticking to the inner wall of the cavity, and avoid the situation where it is impossible to demold quickly after completing the secondary forging. In addition, it can also ensure that the sizes of the various branch ends of the reinforced extension body are the same, and the various branch ends of the reinforced extension body will move from one core groove to another core groove, thereby ensuring the shape and size of the reinforced extension body. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a structural diagram of a finished flange provided by an embodiment of the present invention;

[0035] Figure 2 is a front structural diagram of a hot forging machine provided by an embodiment of the present invention;

[0036] Figure 3 is a cross-sectional structural diagram of a hot forging machine provided by an embodiment of the present invention;

[0037] Figure 4 is a schematic cross-sectional plan view of the hot forging machine provided by an embodiment of the present invention;

[0038] Figure 5 This is a disassembled diagram of the structure of the movable template, the secondary molding template, and the stopper provided in an embodiment of the present invention;

[0039] Figure 6 This is a cross-sectional view of the structure of the movable mold plate, the secondary molding mold plate, and the stop rod provided in an embodiment of the present invention;

[0040] Figure 7 This is a disassembled diagram of the internal integrated structure of the fixed mold base provided by an embodiment of the present invention;

[0041] Figure 8 This is a disassembled diagram of the structure of the fixed die base and the auxiliary rotating body provided in an embodiment of the present invention;

[0042] Figure 9 It is a structural diagram of a rotation aid provided by an embodiment of the present invention.

[0043] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0044] 1. Finished flange; 101. Reinforced extension; 102. Primary perforation; 103. Secondary perforation; 104. Transition fillet; 2. Hot forging machine; 3. Initial forging of semi-finished flange; 4. Hydraulic cylinder; 5. Moving plate; 501. Top body; 502. Top block; 503. Perforation 1; 504. Sliding card body; 505. Oblique guide hole; 506. Inner support block; 507. Spring 1; 6. Secondary forming plate; 601. Hole forging rod; 602. Oblique perforation rod; 603. Support groove; 604. Perforation 2; 605. Top port; 606. Spring 2; 7. Motor; 701. Double-thread screw; 8. Guide rail; 9. Support rod; 901. Screw; 10. Fixed die base; 1001. Finished flange; 101. Reinforced extension; 102. Primary perforation; 103. Secondary perforation; 104. Transition fillet; 105. Reinforced flange; 106. Secondary perforation; 107. Type perforation; 1002, inner circular cavity; 1003, inner ring body; 1004, hole-blocking column; 1005, wedge block; 1006, side through groove; 1007, inner ring seat; 1008, sinker groove; 1009, extension body; 1010, gear ring; 1011, bottom guide tube; 1012, push plate; 1013, guide rod; 1014, push rod; 1015, auxiliary rotation body; 1016, rectangular body; 1017, inclined groove; 1018, straight groove; 1019, transition groove; 1020, side shell; 1021, push rod; 11, transmission tube; 1101, gear; 1102, spiral groove; 1103, inner rod; 1104, protrusion; 1105, rod end groove. DETAILED DESCRIPTION

[0045] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is described in detail below with reference to the following examples. It should be understood that the following text is only used to describe one or more specific embodiments of the present invention and does not strictly limit the scope of protection of the present invention.

[0046] like Figure 1-9 As shown, the automobile hub bearing unit ring accessory flange includes a finished flange 1, the lower surface edge of the finished flange 1 is integrally formed and forged with a reinforcement extension body 101, and each end of the finished flange 1 corresponding to the reinforcement extension body 101 is penetrated by a main through-hole 102, and the edge of the finished flange 1 is penetrated by secondary through-holes 103 in a ring array, the secondary through-holes 103 and the main through-holes 102 are arranged alternately, and the secondary through-holes 103 are also located in the gaps at each end of the reinforcement extension body 101, and the corners of the reinforcement extension body 101 are all provided with transition fillets 104.

[0047] According to the above structure, the size of the main through-hole 102 is larger than that of the secondary through-hole 103. The setting of the reinforcing extension body 101 is used to increase the deformation resistance of the main through-hole 102 when the bolt passes through the main through-hole 102, so as to provide the structural strength of the flange when the flange is used in combination with a bolt of larger size. In addition, the reinforcing extension body 101 can also avoid excessive forming of the hole and the generation of deformed holes when forging the main through-hole 102.

[0048] The manufacturing process of the flange of the automobile hub bearing unit ring accessories is as follows:

[0049] S1: The bar is placed into the fixed die base 10, and the hydraulic cylinder 4 is controlled to drive the movable die plate 5 downward for the first time. During the first combination of the movable die plate 5 and the fixed die base 10, the bar is initially forged and formed, and the portion used to form the reinforcement extension body 101 is also initially formed. In addition, the bottom end of the bar contacts the rectangular body 1016, forming a rectangular groove inward.

[0050] S2: Control the hydraulic cylinder 4 to drive the movable template 5 to reset and move for the first time. During the process, the bottom end of the push rod 9 is correspondingly inserted into the top opening 605. As the movable template 5 continues to reset, the secondary molding template 6 and the movable template 5 will move relative to each other. The movable template 5 and the secondary molding template 6 will eventually fit together. The hole forging rod 601 will penetrate the movable template 5 and extend a part. During the fitting process, the inner support block 506 is not blocked by the secondary molding template 6 and pops out under the action of the spring 1 507. The inner support block 506 will cooperate with the top push block 502 to clamp the secondary molding template 6 to ensure that the movable template 5 and the secondary molding template 6 are stably fitted together. At the same time, the oblique penetrating rod 602 will penetrate into the oblique guide hole 505, and the sliding bodies 504 at both ends will move backwards and simultaneously fit into the rod end grooves 1105 at the top of the inner rods 1103 at both ends.

[0051] S3: During the first reset movement of the movable platen 5, the pushing mechanism located at the inner bottom of the hot forging machine 2 will push the push plate 1012 upward, and the forging will be ejected upward with the cooperation of the push rod 1014 and the auxiliary rotator 1015. When the auxiliary rotator 1015 moves upward, the end of the ejector rod 1021 will move from the transition groove 1019 to the inclined groove 1017. The auxiliary rotator 1015 will drive the forging to rotate while moving upward, and the rotation angle is less than 180°. Then the pushing mechanism controls the push plate 1012 to reset. At this time, the end of the ejector rod 1021 will be returned from the straight groove 1018 to the next transition groove 1019. After the forging is rotated, it is returned to the cavity of the fixed die base 10.

[0052] S4: Control the hydraulic cylinder 4 to drive the movable platen 5 downward for the second time. This time, the movable platen 5 will move downward together with the inner rods 1103 at both ends, causing the inner rods 1103 to penetrate into the transmission tube 11. During the penetration process, the transmission tube 11 will drive the gear 1101 to rotate. After the engagement of the gear 1101 and the gear ring 1010, the inner ring seat 1007 will eventually rotate inside the inner circular cavity 1002. The rotation angle is also less than 180°. At this time, the wedge block 1005 will move to the lowest point of the sinker groove 1008, causing the inner ring body 1003 to move downward together with the hole-blocking columns 1004 and provide a formed through-hole 1001 for the hole forging rod 601 to penetrate.

[0053] S5: Control the hydraulic cylinder 4 to drive the movable platen 5 to continue to move downward. The movable platen 5 carries the extended hole forging rod 601 and is again combined with the fixed die base 10 to perform a secondary forging on the forging. At this time, the hole forging rod 601 will penetrate the forging and be inserted into the forming through-hole 1001. The part of the forging penetrated by the hole forging rod 601 will form the main through-hole 102.

[0054] S6: Control the hydraulic cylinder 4 to drive the movable template 5 to reset and move for the second time. During this process, the inner ring seat 1007 resets and rotates, and the hole-blocking column 1004 will re-block the forming through-hole 1001. Before the movable template 5 is reset for the second time, start the motor 7 in advance, and under the guidance of the double-threaded screws 701 on both sides, make the two push rods 9 move towards each other, so that the push rods 9 move to the position corresponding to the second through-hole 604. When the movable template 5 is reset for the second time, the push rod 9 will pass through the second through-hole 604 and push the inner support block 506 to re-embed into the interior of the top body 501. Finally, under the action of the second springs 606, the movable template 5 is separated from the secondary forming template 6, and the sliding body 504 will also be separated from the inner rod 1103 accordingly, thereby completing the initial forging work of a bar.

[0055] According to the above process flow: the main through-hole 102 with a larger aperture can be manufactured and formed during the initial forging process of the flange. By changing the process of drilling holes to forging, the working pressure of the drilling equipment when drilling large-sized holes can be solved, and at the same time, there is no need to purchase high-strength drilling equipment. It not only saves the drilling time and process of large-sized holes, but also indirectly reduces the economic cost required. In addition, for hot forging machines, the forging of large-sized holes has lower equipment requirements than the forging of small-sized holes, and has lower strength requirements for punching components. Compared with purchasing more expensive high-strength drilling equipment, this economic cost is lower.

[0056] Refer to the attached Figure 2 、 Figure 3 and Figure 4 The manufacturing process of the flange of the automobile hub bearing unit ring accessory includes a hot forging machine 2 and a semi-finished flange 3 that is initially forged and formed and contains a main through-hole 102. A movable platen 5 is configured to be lifted and lowered inside the hot forging machine 2 through a hydraulic cylinder 4 assembled at the top. A secondary forming platen 6 for forming the main through-hole 102 is detachably assembled above the movable platen 5. A fixed die base 10 is fixedly configured at the bottom of the hot forging machine 2. Transmission pipes 11 are rotatably installed inside the hot forging machine 2 and at both ends of the fixed die base 10. Example 1:

[0057] Refer to the attached Figure 5 and Figure 6, the top center of the movable template 5 is integrally provided with a top body 501 connected to the telescopic output end of the hydraulic cylinder 4, the secondary molding template 6 is sleeved on the outer surface of the top body 501 and its lower surface is arrayed with a hole forging rod 601 that is movable through the movable template 5, the outer surface of the hole forging rod 601 is sleeved with a spring 2 606 between the movable template 5 and the secondary molding template 6, and the two ends of the movable template 5 are symmetrically assembled with a sliding card body 504, and the interior of the sliding card body 504 is inclined with an inclined guide hole 505, the secondary molding template 6 Oblique penetrating rods 602 for inserting into the inclined guide holes 505 are fixedly installed at both ends of the lower surface, and top support blocks 502 are integrally provided on both sides of the top of the top body 501; inner support blocks 506 for clamping the secondary molding template 6 are embedded and movably installed on both sides of the interior of the top body 501, and a spring 507 is connected between the inner wall of the inner support block 506 and the inner wall of the top body 501; the hole forging rod 601 extends out before the movable template 5 contacts the bar material for the second time, and the inner support block 506 pops out at this time and is used to make the movable template 5 fit with the secondary molding template 6.

[0058] Refer to the attached Figure 5 and Figure 6 The secondary molding template 6 has support grooves 603 at both ends of its middle part, and a second through-hole 604 is passed through the middle of the support groove 603. Top openings 605 are provided at both ends of the surface of the secondary molding template 6 and on the same axis as the second through-hole 604. A first through-hole 503 is passed through the middle of the top support block 502.

[0059] Refer to the attached Figure 5 and Figure 6 The inner top of the hot forging machine 2 is symmetrically and slidingly assembled with a push rod 9 through a fixed guide rail 8, and screw tubes 901 are fixedly provided on both sides of the push rod 9. A motor 7 is fixedly installed on the inner top of the hot forging machine 2, and the output ends of the two motors 7 are fixedly assembled with double-threaded screws 701, and the two push rods 9 are symmetrically screwed to the two ends of the double-threaded screw 701 through the screw tubes 901; after the movable template 5 forges the bar material for the first time, the end of the push rod 9 is pushed into the inside of the top opening 605 and is used to prevent the secondary molding template 6 from continuing to move upward; after the movable template 5 forges the bar material for the second time, the push rod 9 passes through the through opening 2 604 and is used to push the inner support block 506 into the inside of the top body 501.

[0060] According to the above structure, the bar material is placed inside the fixed die base 10, and the hydraulic cylinder 4 is controlled to drive the movable die plate 5 to move down for the first time. The bar material can be initially forged in the first combination with the fixed die base 10. Then the hydraulic cylinder 4 is controlled to drive the movable die plate 5 to reset for the first time. During the process, the bottom end of the push rod 9 is correspondingly inserted into the top opening 605. As the movable die plate 5 continues to reset, the movement of the secondary molding die plate 6 is restricted by the push rod 9. At this time, relative movement will occur between the secondary molding die plate 6 and the movable die plate 5, and the two will eventually fit together, and the hole forging rod 601 will pass through the movable die plate 5 and extend a part, fitting through During the forming process, the inner support block 506 is not blocked by the inner wall of the secondary forming template 6 and pops out under the action of the spring 1 507. The inner support block 506 will cooperate with the top block 502 to clamp the secondary forming template 6 to ensure that the movable template 5 and the secondary forming template 6 are stably fitted. At the same time, the oblique penetrating rod 602 will penetrate into the oblique guide hole 505, and the sliding bodies 504 at both ends will move backwards. Then, when the hydraulic cylinder 4 drives the movable template 5 to move down for the second time, the movable template 5 will carry the extended hole forging rod 601 to combine with the fixed die seat 10 again and perform secondary forging on the forging. At this time, the hole forging rod 601 is 1 will penetrate the forging and eventually form the main through-hole 102. Finally, before the hydraulic cylinder 4 drives the movable plate 5 to reset for the second time, the motor 7 is started in advance. Under the guidance of the double-threaded screws 701 on both sides, the two push rods 9 are moved in opposite directions, so that the push rods 9 are moved to the position corresponding to the second through-hole 604. When the movable plate 5 is completely reset for the second time, the push rods 9 will penetrate the second through-hole 604 and push the inner support block 506 to re-embed into the interior of the top body 501. At this time, the fixing effect between the secondary molding plate 6 and the movable plate 5 is released. Finally, under the action of the second springs 606, the movable plate 5 and the secondary molding plate are fixed. Plate 6 is separated. In the above process, when the movable plate 5 forges the bar for the first time, the bar can be forged into a semi-finished product without perforations. When the movable plate 5 forges the forging for the second time, the secondary forming plate 6 and the movable plate 5 are automatically combined to form the main perforations 102 on the edge of the forging. During the two forging processes of the movable plate 5, the production of the semi-finished flange 3 with the main perforations 102 can be completed, and the movable plate 5 can automatically complete the change of the hole-forming component in the second forging process. Finally, it can be restored by the motor 7, so that the forging of the semi-finished flange 3 is fully automated.

[0061] The working principle of the present invention is as follows: the bar material is placed inside the fixed die seat 10, and the hydraulic cylinder 4 is controlled to drive the movable die plate 5 to move down for the first time. The bar material can be initially forged in the first combination with the fixed die seat 10, and then the hydraulic cylinder 4 is controlled to drive the movable die plate 5 to reset for the first time. During the process, the bottom end of the push rod 9 is correspondingly inserted into the top opening 605. As the movable die plate 5 continues to reset, the movement of the secondary molding die plate 6 is restricted by the push rod 9. At this time, relative movement will occur between the secondary molding die plate 6 and the movable die plate 5, and the two will eventually fit together, and the hole forging rod 601 will pass through the movable die plate 5 and extend a part. During the fitting process, the inner support block 506 is not blocked by the inner wall of the secondary molding die plate 6 and pops out under the action of the spring 1 507. The inner support block 506 will cooperate with the top push block 502 to clamp the secondary molding die plate 6 to ensure that the movable die plate 5 and the secondary molding die plate 6 are stably fitted. At the same time, the oblique penetrating rod 602 will deeply Into the inclined guide hole 505, and the sliding bodies 504 at both ends will move backwards; then, when the hydraulic cylinder 4 drives the movable plate 5 to move down for the second time, the movable plate 5 will carry the extended hole forging rod 601 to combine with the fixed die seat 10 again and perform secondary forging on the forging. At this time, the hole forging rod 601 will penetrate the forging and finally form the main through-hole 102. Finally, before the hydraulic cylinder 4 drives the movable plate 5 to reset for the second time, the motor 7 is started in advance, and the two push rods 9 are moved in opposite directions under the guidance of the double-threaded screws 701 on both sides, so that the push rods 9 move to the position corresponding to the through-hole 2 604. When the movable plate 5 is fully reset for the second time, the push rod 9 will penetrate the through-hole 2 604 and push the inner support block 506 to re-embed into the interior of the top body 501. At this time, the fixing effect between the secondary molding template 6 and the movable plate 5 is released. Finally, under the action of each spring 2 606, the movable plate 5 is separated from the secondary molding template 6. Example 2:

[0062] Refer to the attached Figure 7 The edge of the fixed die seat 10 is provided with an array of forming through holes 1001 for the hole forging rod 601 to extend into, the interior of the fixed die seat 10 is provided with an inner circular cavity 1002 and the edge is provided with an array of side through grooves 1006, the interior of the inner circular cavity 1002 is movably installed with an inner ring body 1003, the upper surface of the inner ring body 1003 is fixedly provided with an array of hole blocking columns 1004 inserted into the forming through holes 1001, and the lower surface of the inner ring body 1003 is fixedly provided with an array of wedge blocks 1005; the inner circular cavity 1002 is provided with an inner ring seat 1007 rotatably installed below the inner ring body 1003, and the surface of the inner ring seat 1007 is provided with an array of sinker grooves 1008 for the wedge blocks 1005 to be embedded, and the outside of the inner ring seat 1007 is provided with a gear ring 1010 in an integrated manner through an extension body 1009 that passes through the side through groove 1006.

[0063] Refer to the attached Figure 4 and Figure 7A gear 1101 meshing with the gear ring 1010 is fixedly installed in the middle of the transmission tube 11, a spiral groove 1102 is provided on the inner wall of the transmission tube 11, and an inner rod 1103 is movably inserted inside the transmission tube 11, and a protrusion 1104 embedded in the spiral groove 1102 is fixedly provided on the outer wall of the bottom end of the inner rod 1103, and a rod end groove 1105 for the sliding body 504 to be embedded is provided on the top side wall of the inner rod 1103. The sliding body 504 is embedded in the rod end groove 1105 before the movable template 5 forges the bar for the second time.

[0064] According to the above structure, during the first reset movement of the movable template 5, the oblique cross rod 602 will penetrate into the inclined guide hole 505, and the sliding bodies 504 at both ends will move backwards and simultaneously be stuck in the rod end grooves 1105 on the top of the inner rods 1103 at both ends. When the hydraulic cylinder 4 drives the movable template 5 to move downward for the second time, the movable template 5 will move downward together with the inner rods 1103 at both ends, causing the inner rods 1103 to penetrate into the transmission tube 11. Since the protrusion 1104 is embedded in the spiral groove 1102, according to the rotation of the spiral groove 1102, the transmission tube 11 will drive the gear 1101 to rotate during the penetration process, and then the gear 1101 will engage with the gear ring 1010 and finally drive the inner ring seat 1007 to rotate inside the inner circular cavity 1002. After rotating a certain angle, the wedge block 1005 at this time will move to the sinker. The lowest point of the groove 1008 causes the inner ring body 1003 to move downward together with the hole-blocking columns 1004 and provide a forming through-hole 1001 for the hole forging rod 601 to penetrate. The above process can block the forming through-hole 1001 when the bar is forged for the first time, and can avoid the abnormal shape of the forging at the position of the main through-hole 102 during the first forging, and ensure that the flange is formed as preset. In addition, when the forging is forged for the second time, the hole-blocking column 1004 automatically leaves the forming through-hole 1001 to provide space for the hole forging rod 601 to penetrate deeper, and the movement of the hole-blocking column 1004 utilizes the downward movement of the movable template 5 as power, and thus no additional power equipment is required to drive the hole-blocking column 1004 to move. Under the premise of ensuring full automation of forging, the investment in motor equipment can also be reduced, and the economic cost of the total equipment is reduced.

[0065] The working principle of the present invention is as follows: during the first reset movement of the movable plate 5, the oblique penetrating rod 602 will penetrate into the oblique guide hole 505, and the sliding bodies 504 at both ends will move backwards and simultaneously be stuck in the rod end grooves 1105 at the top of the inner rods 1103 at both ends. When the hydraulic cylinder 4 drives the movable plate 5 to move downward for the second time, the movable plate 5 will move downward together with the inner rods 1103 at both ends, causing the inner rods 1103 to penetrate into the transmission tube 11. Since the protrusions 1104 are embedded in the spiral grooves 1102, according to the rotation of the spiral grooves 1102, the transmission tube 11 will be brought into the process of penetration. The moving gear 1101 rotates, and then the engagement between the gear 1101 and the gear ring 1010 finally drives the inner ring seat 1007 to rotate inside the inner circular cavity 1002. After rotating for a certain angle, the wedge block 1005 will move to the lowest point of the sinker groove 1008, causing the inner ring body 1003 to move downward together with the hole-blocking columns 1004 and provide a forming through-hole 1001 for the hole forging rod 601 to penetrate. Conversely, when the moving template 5 is reset for the second time, the inner ring seat 1007 will reset and rotate, and the hole-blocking column 1004 will block the forming through-hole 1001 again. Example 3:

[0066] Refer to the attached Figure 8 and Figure 9 A rotatable body 1015 for ejecting the forging is movably installed inside the bottom of the fixed die base 10, and a rectangular body 1016 for temporarily forming a rectangular groove at the bottom of the forging is integrally provided on the top of the rotatable body 1015. The outer wall of the rotatable body 1015 is provided with an inclined groove 1017, a straight groove 1018 and a transition groove 1019, wherein the top of the straight groove 1018 and the top of the inclined groove 1017 are connected in a fault-type arrangement, while the bottom end of the inclined groove 1017 and the bottom end of the straight groove 1018 are connected in a gradual manner, and the transition groove 1019 is connected to the top of the inclined groove 1017.

[0067] Refer to the attached Figure 8 and Figure 9 The outer wall of the bottom of the fixed die base 10 is fixedly provided with a side shell 1020 in an array, and the inside of the side shell 1020 is assembled with a push rod 1021 in a telescopic manner through a built-in spring, and the end of the push rod 1021 is placed inside the transition groove 1019 when the bar is forged; the bottom of the fixed die base 10 is movably assembled with a push plate 1012, and a push rod 1014 for assisting the rotation connection of the rotator 1015 is installed at the center top of the push plate 1012, and a guide rod 1013 is installed on the edge of the push plate 1012, and the guide rod 1013 is movably inserted into the bottom guide tube 1011 set at the bottom edge of the fixed die base 10.

[0068] According to the above structure, during the first reset movement of the movable plate 5, the pushing mechanism located at the bottom inner side of the hot forging machine 2 will push the push plate 1012 upward, and the forging will be ejected upward with the cooperation of the push rod 1014 and the auxiliary rotating body 1015. The forging only moves up a short distance. When the auxiliary rotating body 1015 moves up, the end of the push rod 1021 will move from the transition groove 1019 to the inclined groove 1017. Since the top of the straight groove 1018 and the top of the inclined groove 1017 are arranged in a fault type, the end of the push rod 1021 can only move into the inclined groove 1017 after moving out of the transition groove 1019. During this process, the auxiliary rotating body 1015 will drive the forging. During the upward movement, it rotates at the same time, and then the pushing mechanism controls the push plate 1012 to reset. At this time, the end of the push rod 1021 will be returned to the next transition groove 1019 by the straight groove 1018. The forging is returned to the cavity of the fixed mold base 10 after rotation. This process is used to avoid the part of the forging corresponding to the reinforced extension body 101 from sticking to the inner wall of the cavity, and to avoid the situation where it is impossible to demold quickly after completing the secondary forging. In addition, it can also ensure that the dimensions of each branch end of the reinforced extension body 101 are the same. Each branch end of the reinforced extension body 101 will move from one core groove to another core groove, ensuring the shape and size of the reinforced extension body 101.

[0069] The working principle of the present invention is as follows: during the first reset movement of the movable template 5, the pushing mechanism located at the bottom inner side of the hot forging machine 2 will push the push plate 1012 upward, and with the cooperation of the push rod 1014 and the auxiliary rotating body 1015, the forging will be ejected upward. The forging only moves up a short distance, and when the auxiliary rotating body 1015 moves up, the end of the push rod 1021 will move from the transition groove 1019 to the inclined groove 1017. Since the top of the straight groove 1018 and the top of the inclined groove 1017 are arranged in a fault-like manner, the end of the push rod 1021 can only move into the inclined groove 1017 after moving out of the transition groove 1019. In this process, the auxiliary rotating body 1015 will drive the forging to rotate at the same time during the upward movement, and then the pushing mechanism controls the push plate 1012 to reset. At this time, the end of the push rod 1021 will be returned to the next transition groove 1019 by the straight groove 1018, and the forging will be returned to the cavity of the fixed die base 10 after rotation.

[0070] The foregoing is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained herein shall, unless otherwise specified or limited, be implemented in accordance with conventional means in the art.

Claims

1. A manufacturing process for a flange of a hub bearing unit ring accessory for an automobile, for producing a finished flange (1), characterized in that: The specific steps are as follows: S1: The bar is placed inside the fixed die base (10), and the hydraulic cylinder (4) is controlled to drive the movable die plate (5) downward for the first time. During the first combination of the movable die plate (5) and the fixed die base (10), the bar is initially forged and formed, and the portion used to form the reinforcing extension body (101) is also initially formed. In addition, the bottom end of the bar contacts the rectangular body (1016) to form a rectangular groove inward. S2: Control the hydraulic cylinder (4) to drive the movable template (5) to reset and move for the first time. During the process, the bottom end of the push rod (9) is correspondingly inserted into the top opening (605). As the movable template (5) continues to reset, relative movement occurs between the secondary molding template (6) and the movable template (5). The movable template (5) and the secondary molding template (6) will eventually fit together. The hole forging rod (601) will penetrate the movable template (5) and extend a portion. During the fitting process, the inner support block (506) is not blocked by the secondary molding template (6) and pops out under the action of the spring 1 (507). The inner support block (506) will cooperate with the top push rod (502) to clamp the secondary molding template (6) to ensure that the movable template (5) and the secondary molding template (6) are stably fitted together. At the same time, the oblique penetrating rod (602) will penetrate into the oblique guide hole (505). The sliding bodies (504) at both ends will move backwards and simultaneously fit into the rod end grooves (1105) at the top of the inner rods (1103) at both ends. S3: During the first reset movement of the movable plate (5), the pushing mechanism located at the inner bottom of the hot forging machine (2) will push the push plate (1012) upward, and the forging will be ejected upward with the cooperation of the push rod (1014) and the auxiliary rotator (1015). When the auxiliary rotator (1015) moves upward, the end of the push rod (1021) will move from the transition groove (1019) to the inclined groove (1017). The auxiliary rotator (1015) will drive the forging to rotate simultaneously during the upward movement, and the rotation angle is less than 180°. Then the pushing mechanism controls the push plate (1012) to reset. At this time, the end of the push rod (1021) will be returned from the straight groove (1018) to the next transition groove (1019). After the forging is rotated, it is returned to the cavity of the fixed die seat (10); S4: Control the hydraulic cylinder (4) to drive the movable template (5) downward for the second time. This time, the movable template (5) will move downward together with the inner rods (1103) at both ends, causing the inner rods (1103) to penetrate into the transmission tube (11). During the penetration process, the transmission tube (11) will drive the gear (1101) to rotate. After the gear (1101) and the gear ring (1010) are engaged, the inner ring seat (1007) is finally driven to rotate inside the inner circular cavity (1002). The rotation angle is also less than 180°. At this time, the wedge block (1005) will move to the lowest point of the sinker groove (1008), causing the inner ring body (1003) to move downward together with the hole blocking columns (1004) and provide a forming perforation (1001) for the hole forging rod (601) to penetrate. S5: Control the hydraulic cylinder (4) to drive the movable platen (5) to continue to move downward, and the movable platen (5) carries the extended hole forging rod (601) to be combined with the fixed die base (10) again and perform secondary forging on the forging. At this time, the hole forging rod (601) will penetrate the forging and be inserted into the forming perforation (1001), and the part of the forging penetrated by the hole forging rod (601) will be formed into the main perforation (102); S6: Control the hydraulic cylinder (4) to drive the movable plate (5) to reset and move for the second time. During this process, the inner ring seat (1007) resets and rotates, and the hole blocking column (1004) will block the forming through hole (1001) again. Before the movable plate (5) is reset for the second time, the motor (7) is started in advance, and the two push rods (9) are moved in opposite directions under the guidance of the double-threaded screws (701) on both sides, so that the push rods (9) move to the position corresponding to the second through hole (604). When the movable plate (5) is reset for the second time, the push rod (9) will penetrate the second through hole (604) and push the inner support block (506) to re-embed into the inside of the top body (501). Finally, under the action of the second springs (606), the movable plate (5) is separated from the secondary forming plate (6), and the sliding body (504) will also be separated from the inner rod (1103) accordingly, thereby completing the initial forging work of a bar.

2. The manufacturing process of the automobile hub bearing unit ring accessory flange according to claim 1 comprises a hot forging machine (2) and a pre-forged semi-finished flange (3) that is pre-forged and has a main through hole (102), characterized in that: A movable die plate (5) is provided inside the hot forging machine (2) in a lifting manner via a hydraulic cylinder (4) assembled at the top, a secondary forming die plate (6) for forming the main perforation (102) is detachably assembled above the movable die plate (5), a fixed die seat (10) is fixedly provided at the bottom of the hot forging machine (2), and transmission pipes (11) are rotatably installed inside the hot forging machine (2) and at both ends of the fixed die seat (10); The top center of the movable plate (5) is integrally provided with a top body (501) connected to the telescopic output end of the hydraulic cylinder (4), the secondary molding plate (6) is sleeved on the outer surface of the top body (501) and the lower surface thereof is provided with a hole forging rod (601) that is movable and passes through the movable plate (5) in an array, the outer surface of the hole forging rod (601) is sleeved with a spring 2 (606) located between the movable plate (5) and the secondary molding plate (6), and the two ends of the movable plate (5) are symmetrically assembled with a sliding card body (504), and the sliding card body The interior of (504) is inclined with an inclined guide hole (505), and the two ends of the lower surface of the secondary molding template (6) are fixedly installed with an inclined penetrating rod (602) for inserting into the inclined guide hole (505), and the top two sides of the top body (501) are integrally provided with a top support block (502); the inner two sides of the top body (501) are embedded and movably installed with an inner support block (506) for clamping the secondary molding template (6), and a spring (507) is connected between the inner wall of the inner support block (506) and the inner wall of the top body (501); The hole forging rod (601) extends before the movable plate (5) contacts the bar material for the second time, and the inner support block (506) pops out at this moment and is used to make the movable plate (5) fit with the secondary molding plate (6).

3. The manufacturing process of the automobile hub bearing unit ring accessory flange according to claim 2 is characterized in that: The middle ends of the secondary molding template (6) are provided with support grooves (603), and the middle of the support groove (603) is penetrated by a second through-hole (604), and the surface ends of the secondary molding template (6) are provided with top openings (605) on the same axis as the second through-hole (604), and the middle of the top support block (502) is penetrated by a first through-hole (503).

4. The manufacturing process of the automobile hub bearing unit ring accessory flange according to claim 3 is characterized in that: The inner top of the hot forging machine (2) is symmetrically and slidingly assembled with a push rod (9) through a fixedly installed guide rail (8), and both sides of the push rod (9) are fixedly provided with a screw tube (901), and the inner top of the hot forging machine (2) is fixedly installed with a motor (7), and the output ends of the two motors (7) are fixedly assembled with a double-threaded screw (701), and the two push rods (9) are symmetrically screwed to the two ends of the double-threaded screw (701) through the screw tube (901); After the movable template (5) forges the bar material for the first time, the end of the push rod (9) is pushed into the top opening (605) and is used to prevent the secondary molding template (6) from continuing to move upward; after the movable template (5) forges the bar material for the second time, the push rod (9) passes through the second through opening (604) and is used to push the inner support block (506) into the top body (501).

5. The manufacturing process of the automobile hub bearing unit ring accessory flange according to claim 4 is characterized in that: The edge of the fixed die seat (10) is provided with a forming through hole (1001) for the hole forging rod (601) to extend therethrough in an array pattern, the interior of the fixed die seat (10) is provided with an inner circular cavity (1002) and the edge is provided with a side through groove (1006) in an array pattern, an inner ring body (1003) is movably installed inside the inner circular cavity (1002), the upper surface of the inner ring body (1003) is fixedly provided with a hole blocking column (1004) inserted into the forming through hole (1001), and the lower surface of the inner ring body (1003) is fixedly provided with a wedge block (1005) in an array pattern.

6. The manufacturing process of the automobile hub bearing unit ring accessory flange according to claim 5 is characterized in that: An inner ring seat (1007) is rotatably mounted inside the inner circular cavity (1002) and below the inner ring body (1003), and an array of sinker grooves (1008) for embedding wedge blocks (1005) are provided on the surface of the inner ring seat (1007), while a gear ring (1010) is integrally provided on the outside of the inner ring seat (1007) through an extension body (1009) that passes through the side through-groove (1006).

7. The manufacturing process of the automobile hub bearing unit ring accessory flange according to claim 6 is characterized in that: A gear (1101) meshing with the gear ring (1010) is fixedly installed in the middle of the transmission tube (11), a spiral groove (1102) is provided on the inner wall of the transmission tube (11), and an inner rod (1103) is movably inserted inside the transmission tube (11), a protrusion (1104) embedded in the spiral groove (1102) is fixedly provided on the outer wall of the bottom end of the inner rod (1103), and a rod end groove (1105) for embedding a sliding card body (504) is provided on the top side wall of the inner rod (1103), and the sliding card body (504) is embedded in the rod end groove (1105) before the movable plate (5) forges the bar for the second time.

8. The manufacturing process of the automobile hub bearing unit ring accessory flange according to claim 7 is characterized in that: A rotator (1015) for ejecting a forging is movably installed inside the bottom of the fixed die seat (10), and a rectangular body (1016) for temporarily forming a rectangular groove at the bottom of the forging is integrally provided on the top of the rotator (1015), and an outer wall of the rotator (1015) is provided with an inclined groove (1017), a straight groove (1018) and a transition groove (1019), wherein the top of the straight groove (1018) is connected to the top of the inclined groove (1017) in a discontinuous manner, and the bottom of the inclined groove (1017) is connected to the bottom of the straight groove (1018) in a gradual manner, and the transition groove (1019) is connected to the top of the inclined groove (1017); The outer wall of the bottom of the fixed die base (10) is fixedly provided with a side shell (1020) in an array, and a push rod (1021) is assembled in a three-telescopic manner inside the side shell (1020) through a built-in spring, and the end of the push rod (1021) is placed inside the transition groove (1019) when the bar is forged.

9. The manufacturing process of the automobile hub bearing unit ferrule accessory flange according to claim 8 is characterized in that: The bottom of the fixed mold base (10) is movably assembled with a push plate (1012), and a push rod (1014) for assisting the rotational connection of the rotator (1015) is installed at the center top of the push plate (1012). A guide rod (1013) is installed at the edge of the push plate (1012), and the guide rod (1013) is movably inserted into the bottom guide tube (1011) arranged at the bottom edge of the fixed mold base (10).

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