A method for manufacturing high-strength bolts and quenching equipment
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HUBEI XIANGYU MACHINERY
- Filing Date
- 2026-03-20
- Publication Date
- 2026-07-03
Smart Images
Figure CN121896427B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of quenching equipment technology, and in particular to a method for manufacturing high-strength bolts and quenching equipment. Background Technology
[0002] While existing 12.9 grade bolts have high strength, they suffer from problems such as thread tip wear, plastic elongation, and insufficient toughness when repeatedly disassembled, especially when subjected to violent disassembly using pneumatic tools such as pneumatic wrenches. Therefore, induction hardening equipment is often used to form a hardened layer in the thread area to balance high surface hardness and high core toughness, and it also needs to be adapted to the needs of mass production.
[0003] For example, Chinese Patent Publication No. CN114891983B discloses an automatic quenching device for bolt processing, belonging to the field of quenching equipment technology. It includes a base with two supports on its upper surface and a displacement mechanism between them. The displacement mechanism drives the rotating supports to move laterally and longitudinally. Below the displacement mechanism are a rotation mechanism and a clamping mechanism. The rotation mechanism drives the bolt to rotate, and the clamping mechanism intermittently clamps the bolt to ensure uniform heating. Above the base is a cooling mechanism, which includes a pick-and-place component and a water circulation component. The pick-and-place component uses a rotatable storage tray for easy pick-and-place and storage of bolts. The water circulation component controls the temperature to remain constant during quenching, ensuring quenching quality. It features convenient operation and a high degree of automation.
[0004] The application separates the heating box and cooling mechanism on the base, and drives the clamping mechanism to move back and forth between the heating box and the cooling mechanism through the displacement mechanism. Its structure is dispersed and occupies a significantly larger space, which makes the quenching and cooling steps of the bolts cumbersome and time-consuming, resulting in a reduction in overall processing efficiency and certain limitations in its use.
[0005] Therefore, it is necessary to provide a manufacturing method and quenching equipment for high-strength bolts to solve the above-mentioned technical problems. Summary of the Invention
[0006] The purpose of this invention is to provide a method for manufacturing high-strength bolts and a quenching device to solve the problems mentioned in the background art.
[0007] To achieve the above objectives, a manufacturing method and quenching equipment for high-strength bolts that can be directly immersed in a water tank after quenching are designed, thereby simplifying the operation steps and improving processing efficiency.
[0008] Based on the above ideas, the present invention provides the following technical solution: a quenching device for high-strength bolts, comprising a worktable and a housing, a water tank, and a quenching mechanism fixedly mounted on the worktable. The worktable and the housing share an inlet and an outlet. The housing is internally provided with a support assembly for supporting the workpiece. The support assembly includes a circular seat for supporting the workpiece, and a limiting assembly for limiting the workpiece is provided on the circular seat. The housing is internally provided with an adjustment assembly corresponding to the positions of the circular seat and the limiting assembly. When the circular seat moves away from the inlet, the limiting assembly can limit the workpiece to the center of the circular seat through the adjustment assembly. When the circular seat moves above the water tank, the adjustment assembly can drive the circular seat and the limited workpiece to descend.
[0009] As a further embodiment of the present invention: the support assembly further includes a motor fixedly mounted on the workbench, a turntable fixedly mounted on the output shaft of the motor, a gear fixedly mounted on the outer surface of the round base, a gear ring fixedly mounted on the inner wall of the housing for meshing and transmission with the gear, and a first spring fixedly mounted on the top of the turntable for abutting against the end face of the gear.
[0010] As a further embodiment of the present invention: the outer surface of the circular base is provided with an opening, the bottom of the circular base is provided with an elongated hole communicating with the opening, and the limiting component is located inside the opening and corresponds vertically to the elongated hole.
[0011] As a further aspect of the present invention: the thickness of the gear ring along the axial direction of the housing is greater than the thickness of the gear along the axial direction of the housing; when the turntable is started, the gear and the gear ring can drive the round seat to revolve and rotate; when the round seat rotates to correspond to the inlet and outlet, the opening and the elongated hole correspond to the inlet and outlet respectively.
[0012] As a further aspect of the present invention: the turntable has a plurality of slots through it along its axial direction, and the number of round seats is adapted to the number of slots and is arranged in a one-to-one correspondence.
[0013] As a further aspect of the present invention: the limiting component includes a support rod slidably installed in the round seat, a round plate for limiting the workpiece and corresponding to the position of the adjusting component is fixedly installed at the bottom of the support rod, and a second spring is sleeved on the outer surface of the support rod.
[0014] As a further aspect of the present invention: the circular plate and the circular seat are arranged concentrically, and an arc-shaped groove is provided at the center of the bottom of the circular plate. Through the concentric arrangement and the arc-shaped groove, the workpiece can be limited to the center of the circular seat after the circular plate is lowered.
[0015] As a further embodiment of the present invention: the adjustment component includes a first patch, a pressure block and a second patch fixedly installed on the inner wall of the housing. The first patch, the pressure block and the second patch are respectively vertically aligned with the inlet, the water tank and the outlet. The first patch, the pressure block and the second patch are provided with inclined surfaces on both sides.
[0016] As a further aspect of the present invention: the inclined surfaces of the first patch and the second patch are in the same direction and opposite to the inclined surface of the pressure block. The inclined surfaces of the first patch and the second patch are used to guide the circular plate to move up and down, and the inclined surface of the pressure block is used to guide the circular seat to move up and down.
[0017] This invention also provides the following technical solution: a method for manufacturing high-strength bolts, comprising the following steps:
[0018] S1. The workpiece is transported into the housing and supported by the round seat. The support assembly is started to drive the round seat to revolve and rotate within the housing. When the round seat moves and is misaligned with the inlet, the workpiece is limited to the center of the round seat by the adjustment assembly and the limiting assembly.
[0019] S2. The round seat moves the workpiece and passes through the quenching mechanism and water tank in sequence. When passing through the quenching mechanism, the quenching is completed to obtain the quenched area. When passing through the water tank, the round seat contacts the adjusting component. At this time, the adjusting component causes the round seat and the workpiece to descend, so that the quenched area of the workpiece is immersed in the cooling medium in the water tank to complete the cooling.
[0020] S3. The round seat moves the workpiece closer to the outlet. At this time, the limiting component and the adjusting component come into contact, causing the limiting component to release the workpiece. The workpiece can then be unloaded at the outlet.
[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: by cooperating with the quenching mechanism, water tank, round seat and shell, the structure is integrated on the workbench and located below the shell, so that the workpieces conveyed from the inlet can quickly pass through the quenching mechanism and water tank and be discharged from the outlet, thereby ensuring the processing efficiency of large batches of workpieces; the overall space occupied is smaller and the layout is more reasonable, which has the advantages of saving space, improving operating efficiency and reducing maintenance costs, and can effectively adapt to the batch quenching needs of fasteners such as bolts.
[0022] Through the cooperation of the circular base, limiting components, and adjusting components, the workpiece can be driven to revolve and rotate within the housing. At the same time, the workpiece can be limited to the center of the circular base, thereby ensuring that the distance between the workpiece and the quenching mechanism and the water tank is appropriate. When passing through the water tank, the workpiece can be driven to descend and be immersed in the cooling medium, which can effectively improve the quenching and cooling effects, enabling the workpiece to meet the high strength requirements.
[0023] By positioning the workpiece at the center of the circular seat using a limiting component and driving its movement, the size restrictions on the workpiece are effectively reduced, and the position restrictions on the workpiece falling into the circular seat from the inlet are also reduced. At this time, the operational requirements for workpiece loading are less restricted, and workers do not need to intervene too much, which can effectively reduce the burden on workers and improve the overall applicability of the workpiece.
[0024] At the same time, the limiting component acts on the head of the workpiece to complete the limiting. When the rod of the workpiece is limited, there is no clamping area. Only the part of the rod near the head is blocked by the wall thickness of the round seat. This will not affect the effective quenching of the workpiece by the quenching mechanism, which is conducive to ensuring the quenching effect of the workpiece.
[0025] By rotating and revolving the workpiece, the rotation process can effectively reduce the adhesion of cooling medium on the threaded area of the workpiece when the workpiece is removed from the water tank. This allows the cooling medium to be thrown off the workpiece and fall back into the water tank. Combined with the cooling method of immersing the workpiece, the loss and waste of cooling medium can be effectively reduced, thereby extending the service life of the cooling medium in the water tank and ensuring overall economic benefits. Attached Figure Description
[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments:
[0027] Figure 1 This is a perspective view of the overall structure of the present invention;
[0028] Figure 2 This is a top view of the internal structure of the housing of the present invention;
[0029] Figure 3 This is a bottom view of the workbench structure of the present invention;
[0030] Figure 4 This is a schematic diagram of the turntable, water tank, and quenching mechanism of the present invention;
[0031] Figure 5 This is a schematic diagram of the housing and toothed ring structure of the present invention;
[0032] Figure 6 This is a schematic diagram of the circular base and gear structure of the present invention;
[0033] Figure 7 This is a schematic diagram of the support rod and circular plate structure of the present invention;
[0034] Figure 8 This is a schematic diagram of the arc-shaped groove, workpiece, and quenching zone structure of the present invention;
[0035] Figure 9 This is a schematic diagram of the housing and locking rod structure of the present invention;
[0036] Figure 10 This is a schematic diagram of the first and second pressure strips of the present invention.
[0037] In the diagram: 1. Workbench; 2. Shell; 3. Quenching mechanism; 4. Water tank; 5. Support assembly; 6. Adjustment assembly; 7. Limiting assembly; 8. Workpiece; 9. Vibratory feeder mechanism; 10. Push plate; 101. Inlet; 102. Outlet; 103. Bracket; 501. Motor; 502. Turntable; 503. Round seat; 504. Groove; 505. Gear; 506. Gear ring; 507. First spring; 508. Opening; 509. Long hole; 601. First patch; 602. Pressure block; 603. Second patch; 604. Inclined surface; 6021. First pressure bar; 6022. Second pressure bar; 6023. Locking rod; 701. Round plate; 702. Support rod; 703. Second spring; 704. Arc groove; 801. Quenching area. Detailed Implementation
[0038] Example 1:
[0039] Please see Figures 1 to 8 This invention provides a quenching device for high-strength bolts, mainly used to improve the quenching and cooling effect of workpieces 8 and ensure the processing efficiency of batch workpieces 8. The device includes a workbench 1 and a housing 2, a water tank 4, and a quenching mechanism 3 fixedly installed on the workbench 1. The quenching mechanism 3 is located in front of the water tank 4 and can contact the workpiece 8 before the water tank 4. When the workpiece 8 passes through the quenching mechanism 3, it automatically completes induction quenching. When it passes through the water tank 4, it is cooled by the cooling medium in the water tank 4. The housing 2 has an inverted U-shaped design and is fastened to the top of the workbench 1. The housing 2 is provided with a support component 5 for supporting the workpiece 8. After the workpiece 8 is conveyed into the housing 2 from the external feeding device, it can automatically fall onto the support component 5 and be moved by the support component 5.
[0040] In this embodiment, as Figure 1 As shown, the external feeding device can be a vibratory feeder mechanism 9, which can achieve stable conveying of the workpiece 8. For example... Figure 3 As shown, the water tank 4 and the quenching mechanism 3 are both arranged below the workbench 1, and the water tank 4 and the quenching mechanism 3 are arranged along the circumferential direction of the shell 2, so that the support assembly 5 can correspond to the quenching mechanism 3 and the water tank 4 successively when moving the workpiece 8. After the quenching mechanism 3 works, a layer of ultra-fine grain, ultra-high hardness (48-53HRC) fully quenched martensite layer can be formed in the thread area of the workpiece 8, that is... Figure 8The quenching zone 801 has an effective depth of 2.5mm–4.0mm (the specific depth may be slightly adjusted according to the bolt specifications). This martensitic layer has a uniform depth and a smooth transition with the matrix. This hardness level provides excellent wear resistance and crush resistance (far superior to 10.9 or 12.9 grade tempered bolts) and significantly improves the toughness of this region, effectively resisting brittle spalling and microcrack initiation under impact loads. Simultaneously, this martensitic layer has extremely high yield strength (tensile strength ≥1400MPa, yield strength ≥1200MPa), which is crucial for resisting plastic elongation. It should be noted that the aforementioned vibratory feeder mechanism 9, water tank 4, and quenching mechanism 3 are all existing mature technologies and will not be described in detail here.
[0041] Correspondingly, such as Figure 3 As shown, the worktable 1 and the housing 2 are both equipped with an inlet 101 and an outlet 102. The inlet 101 corresponds to the feeding position of the workpiece 8, and the outlet 102 corresponds to the discharging position of the workpiece 8. The workpiece 8 conveyed by the vibratory feeder mechanism 9 is fed into the housing 2 through the inlet 101 and falls onto the support assembly 5, which drives it to move. At this time, the internal space of the housing 2 can be divided into four areas: the feeding area is located on the left side of the inlet 101, the quenching area is located below corresponding to the quenching mechanism 3, the cooling area is located on the right side corresponding to the water tank 4, and the discharging area is located above corresponding to the outlet 102. Furthermore, a pusher plate 10 can be fixedly installed at the outlet 102 to push out the cooled workpiece 8.
[0042] Furthermore, such as Figure 4 As shown, the support assembly 5 includes a circular seat 503. The workpiece 8 entering the housing 2 falls onto the circular seat 503. The circular seat 503 is provided with a limiting component 7 for limiting the workpiece 8, and the housing 2 is provided with an adjustment component 6 whose position corresponds to both the circular seat 503 and the limiting component 7. When the support assembly 5 is activated, it can drive the circular seat 503 to move circumferentially along the inner wall of the housing 2. At this time, the circular seat 503 itself can also rotate. When the circular seat 503 is misaligned with the inlet 101, the workpiece 8 can be automatically limited by the adjustment component 6 and the limiting component 7, and the workpiece 8 can be automatically positioned at the center of the circular seat 503. At the same time, the adjustment component 6 and the limiting component 7 can also drive the circular seat 503 and the limited workpiece 8 to descend.
[0043] In the above structure, such as Figure 4As shown, the adjusting component 6 is divided into three parts. The first part corresponds to the inlet 101, ensuring that the limiting component 7 does not interfere with the feeding of the workpiece 8 into the circular seat 503. The second part corresponds to the water tank 4, allowing the circular seat 503 and the limited workpiece 8 to descend. At this time, the workpiece 8 has been quenched and can be immersed in the cooling medium. The third part corresponds to the outlet 102, allowing the limiting component 7 to release the limitation on the workpiece 8. At this time, the workpiece 8 can be automatically pushed out of the circular seat 503 by the push plate 10. By driving the rotation and revolution of the limited workpiece 8 through the circular seat 503, the quenching efficiency and quenching effect of batch bolts can be effectively improved. At the same time, the water tank 4 is adjacent to the quenching mechanism 3, and the workpiece 8 can still maintain its revolution and rotation after being immersed in the cooling medium, which can further improve the cooling effect of the quenched workpiece 8.
[0044] Reference Figures 2 to 4 In this embodiment, preferably, the support component 5 further includes a motor 501 fixedly installed on the workbench 1. A bracket 103 extends from the bottom of the workbench 1 to house the motor 501. A turntable 502 is fixedly installed on the output shaft of the motor 501. The turntable 502 has several slots 504 extending through it along its axial direction. The number of round seats 503 is adapted to the slots 504 and is arranged in a one-to-one correspondence. The round seats 503 can rotate and slide up and down along the slots 504. The turntable 502 can also drive several round seats 503 to revolve through the slots 504.
[0045] Among them, such as Figure 6 As shown, the outer surface of the circular seat 503 has an opening 508, and the bottom of the circular seat 503 has an elongated hole 509 that communicates with the opening 508. The limiting component 7 is located inside the opening 508 and corresponds vertically to the elongated hole 509. When the workpiece 8 enters the circular seat 503, its head falls into the opening 508, and its rod enters the elongated hole 509. At this time, the limiting component 7 and the adjusting component 6 are in contact within the opening 508 and are in an upward state, which will not interfere with the feeding of the workpiece 8 into the opening 508. Subsequently, when the turntable 502 drives the circular seat 503 to revolve, the limiting component 7 separates from the adjusting component 6. At this time, the limiting component 7 can lower to automatically limit the head of the workpiece 8 and position the workpiece 8 at the center of the circular seat 503.
[0046] Furthermore, such as Figures 4 to 6As shown, a gear 505 is fixedly mounted on the outer surface of the circular seat 503, and a gear ring 506 that meshes with the gear 505 is fixedly mounted on the inner wall of the housing 2. When the turntable 502 drives the circular seat 503 to revolve, the circular seat 503 can rotate through the gear 505 and the gear ring 506. At the same time, when the circular seat 503 rotates to correspond with the inlet 101 and the outlet 102, the opening 508 and the elongated hole 509 also correspond with the inlet 101 and the outlet 102 respectively. Correspondingly, the thickness of the gear ring 506 along the axial direction of the housing 2 is greater than the thickness of the gear 505 along the axial direction of the housing 2, so that when the adjusting component 6 descends and moves synchronously with the gear 505, the gear 505 can move along the gear ring 506, and the two can maintain a meshing transmission state.
[0047] To achieve automatic reset of the circular base 503 after the turntable 502 descends, such as Figure 6 As shown, a first spring 507 is fixedly installed on the turntable 502, which abuts against the end face of the gear 505. The first spring 507 causes the gear 505 to have an upward tendency, and the gear 505 compresses the first spring 507 when it descends.
[0048] Reference Figures 6 to 8 In this embodiment, preferably, the limiting component 7 includes a support rod 702 slidably installed in the round seat 503. A round plate 701 for limiting the workpiece 8 and corresponding to the position of the adjusting component 6 is fixedly installed at the bottom of the support rod 702. A second spring 703 is sleeved on the outer surface of the support rod 702. The second spring 703 causes the support rod 702 and the round plate 701 to have a downward tendency. Then, when the adjusting component 6 is separated from the round plate 701, the second spring 703 can cause the round plate 701 to descend and press the head of the workpiece 8.
[0049] Furthermore, such as Figure 8 As shown, the circular plate 701 and the circular seat 503 are arranged concentrically, and an arc-shaped groove 704 is provided at the center of the bottom of the circular plate 701. When the circular plate 701 descends vertically, the workpiece 8 can be automatically pressed and centered through the arc-shaped groove 704, so that the workpiece 8 is positioned at the center of the circular seat 503. Then, when the circular seat 503 rotates, it can drive the workpiece 8 to rotate stably based on the center, so that the distance between the workpiece 8 and the quenching mechanism 3 and the water tank 4 is maintained at an appropriate distance, thereby ensuring the subsequent quenching and cooling effects.
[0050] Reference Figures 4 to 6In this embodiment, preferably, the adjustment component 6 includes a first patch 601, a pressure block 602, and a second patch 603 fixedly installed on the inner wall of the housing 2. The first patch 601, the pressure block 602, and the second patch 603 correspond vertically to the inlet 101, the water tank 4, and the outlet 102, respectively. Inclined surfaces 604 are provided on both sides of the first patch 601, the pressure block 602, and the second patch 603. The inclined surfaces 604 of the first patch 601 and the second patch 603 are used to guide the movement of the circular plate 701, and the inclined surfaces 604 of the pressure block 602 are used to guide the movement of the circular seat 503.
[0051] Specifically, such as Figure 4 As shown, the inclined surfaces 604 of the first patch 601 and the second patch 603 are in the same direction and opposite to the inclined surface 604 of the pressure block 602. The structures of the first patch 601 and the second patch 603 are the same, differing only in their installation positions, and they can be freely interchanged. When the circular plate 701 contacts the first patch 601 and the second patch 603, the inclined surface 604 allows the circular plate 701 to automatically rise along the circular seat 503. At this time, the circular seat 503 slides along the inner top wall of the housing 2 and cannot rise or fall, so the movement of the circular plate 701 will not interfere with the circular seat 503. When the circular seat 503 contacts the pressure block 602, the inclined surface 604 allows the circular seat 503 to automatically descend along the turntable 502. At this time, the circular seat 503 can drive the circular plate 701 and the limited workpiece 8 to automatically descend.
[0052] It is understandable that, such as Figure 4 As shown, the length of the pressure block 602 along the circumferential direction of the shell 2 is smaller than the length of the water tank 4 along the circumferential direction of the shell 2, so that the workpiece 8 will only descend after entering the water tank 4, which can avoid interference between the workpiece 8 and the water tank 4, and can also avoid interference when the workpiece 8 is removed from the water tank 4.
[0053] In use, the workpiece 8 is conveyed by the vibratory feeder mechanism 9 from the inlet 101 into the round seat 503. Its head is supported by the opening 508 and the rod enters the elongated hole 509. The motor 501 drives the round seat 503 to rotate through the turntable 502, so that the round seat 503 is misaligned with the opening 508. At this time, the round plate 701 separates from the first patch 601 and descends vertically through the second spring 703. The round plate 701 can press the workpiece 8 through the arc groove 704 and position it at the center of the round seat 503. Next, the turntable 502 drives the circular seat 503 to continue its revolution, and the circular seat 503 continues to rotate on its own axis through the gear 505 and the gear ring 506. The circular seat 503 drives the workpiece 8, which is limited, to pass through the quenching mechanism 3 and the water tank 4 in this motion state. When passing through the quenching mechanism 3 and the water tank 4, the distance is appropriate and the rotation can continue. When passing through the water tank 4, the circular seat 503 contacts the pressure block 602, which can drive the workpiece 8, which is limited, to fall down, so that the workpiece 8 is immersed in the cooling medium in the water tank 4. Therefore, the overall quenching effect and cooling effect can be improved. Finally, the circular seat 503 separates from the pressure block 602 and moves towards the outlet 102. At this time, the circular plate 701 contacts the second patch 603, rises, and releases the limitation on the cooled workpiece 8. The push plate 10 can push the cooled workpiece 8 out of the elongated hole 509 and discharge it from the outlet 102.
[0054] In summary, by coordinating the quenching mechanism 3, water tank 4, turntable 502, and housing 2, the structure is integrated on the workbench 1 and located below the housing 2. This allows the workpiece 8, which is conveyed from the inlet 101, to quickly pass through the quenching mechanism 3 and water tank 4 and be discharged from the outlet 102, thereby ensuring the processing efficiency of a large batch of workpieces 8. The overall structure occupies less space and has a more reasonable layout, which has the advantages of saving space, improving operating efficiency, and reducing maintenance costs. It can effectively meet the batch quenching needs of fasteners such as bolts.
[0055] Through the cooperation of structures such as the circular seat 503, gear 505, gear ring 506 and circular plate 701, the workpiece 8 can be driven to revolve and rotate within the housing 2. At the same time, the workpiece 8 can be limited to the center of the circular seat 503, thereby ensuring that the distance between the workpiece 8 and the quenching mechanism 3 and the water tank 4 is appropriate. When passing through the water tank 4, the workpiece 8 can be driven to descend and be immersed in the cooling medium, thereby effectively improving the quenching and cooling effects, so that the workpiece 8 meets the high strength requirements.
[0056] By positioning the workpiece 8 at the center of the circular seat 503 through the arc groove 704 and driving it to move, the size restriction of the workpiece 8 is effectively reduced, and the position restriction of the workpiece 8 falling into the circular seat 503 from the inlet 101 is also reduced. At this time, the operation requirements of the vibratory feeder mechanism 9 are less restricted, and the worker does not need to intervene too much, which can effectively reduce the worker's burden and improve the overall applicability to the workpiece 8.
[0057] At the same time, the circular plate 701 acts on the head of the workpiece 8 to complete the limiting. When the rod of the workpiece 8 is limited, there is no clamping area. Only the part of the rod near the head is blocked by the wall thickness of the circular seat 503. This will not affect the effective quenching of the workpiece 8 by the quenching mechanism 3, which is conducive to ensuring the quenching effect of the workpiece 8.
[0058] By rotating and revolving the workpiece 8, when the workpiece 8 is removed from the water tank 4, the rotation process can effectively reduce the adhesion of cooling medium on the threaded area of the workpiece 8, so that the cooling medium is thrown off the workpiece 8 and falls back into the water tank 4. Combined with the cooling method of immersing the workpiece 8, the loss and waste of cooling medium can be effectively reduced, thereby extending the service life of the cooling medium in the water tank 4 and ensuring the overall economic benefits.
[0059] Example 2:
[0060] Please see Figures 1 to 10 Based on Embodiment 1, in order to further improve the applicability to different workpieces 8, the pressure block 602 is improved: at this time, the pressure block 602 includes a first pressure bar 6021, a second pressure bar 6022 and a locking rod 6023 for driving the first pressure bar 6021 and the second pressure bar 6022 to move. The first pressure bar 6021 and the second pressure bar 6022 correspond to the quenching mechanism 3 and the water tank 4 respectively. The first pressure bar 6021 and the second pressure bar 6022 are fixedly connected and slide in cooperation with the housing 2. When the locking rod 6023 is rotated based on the housing 2, the first pressure bar 6021 and / or the second pressure bar 6022 can be driven to rise and fall accordingly.
[0061] In this embodiment, the locking rod 6023 is threadedly engaged with the housing 2, and the bottom of the locking rod 6023 is rotatably engaged with the first pressure bar 6021 or the second pressure bar 6022. There can be two locking rods 6023, each rotatably engaged with the first pressure bar 6021 and the second pressure bar 6022 respectively, thereby enabling the corresponding lifting and lowering of the first pressure bar 6021 or the second pressure bar 6022 based on the housing 2. Alternatively, there can be one locking rod 6023, rotatably engaged with the first pressure bar 6021 or the second pressure bar 6022, thereby enabling synchronous lifting and lowering with the first pressure bar 6021 and the second pressure bar 6022 respectively. In this embodiment, only one locking rod 6023 is shown, and it is fixedly connected to the first pressure bar 6021.
[0062] Furthermore, the first pressure bar 6021 can be on the same horizontal plane as the second pressure bar 6022. In this case, the first pressure bar 6021 causes the workpiece 8 to descend based on the quenching mechanism 3, which can correspondingly adjust the quenching area 801 of the workpiece 8, but does not affect the immersion area of the workpiece 8 based on the water tank 4. Alternatively, the first pressure bar 6021 can be located above the second pressure bar 6022. In this case, in addition to adjusting the quenching area 801, the depth of the workpiece 8 immersed in the cooling medium can also be adjusted to meet the quenching and cooling requirements of workpieces 8 of different lengths. In this embodiment, the state in which the first pressure bar 6021 is located above the second pressure bar 6022 is shown.
[0063] In use, the workpiece 8 can be driven to revolve and rotate within the housing 2 via structures such as the circular seat 503, gear 505, gear ring 506, and circular plate 701. When passing the water tank 4, the workpiece 8 can be lowered and immersed in the cooling medium. The working process and effect of this part are the same as in Embodiment 1, and will not be repeated here. The difference lies in that, based on the different length dimensions of the workpiece 8 and the dimensions of the quenching area 801, the positions of the first pressure bar 6021 and the second pressure bar 6022 can be adjusted by rotating the locking rod 6023 based on the housing 2. This allows the workpiece 8 to undergo a lifting and lowering process when entering the quenching mechanism 3 and the water tank 4, thereby meeting different processing requirements.
[0064] Compared to Embodiment 1, through the cooperation of the housing 2, the first pressure bar 6021, the second pressure bar 6022 and the locking rod 6023, when the workpiece 8 passes through the quenching mechanism 3 and the water tank 4 during the revolution and rotation of the round seat 503, the workpiece 8 can be driven to rise and fall accordingly based on the quenching mechanism 3 and the water tank 4, thereby enabling the workpiece 8 to obtain quenching areas 801 of different lengths, and ensuring effective cooling effect.
[0065] The overall solution is combined with the setting of the round seat 503. The round seat 503 is further improved based on the lifting of the turntable 502, which can effectively improve the applicability to workpieces 8 of different lengths, meet the processing requirements of workpieces 8 of different lengths and different quenching zones 801 and cooling zones of workpieces 8, and further improve the overall applicability of the equipment.
[0066] Example 3:
[0067] Please see Figures 1 to 10 This invention provides a method for manufacturing high-strength bolts. The quenching equipment used in this method is either one of the equipment in Embodiment 1 or 2, and therefore also has corresponding beneficial effects.
[0068] Specifically, firstly, the workpiece 8 is conveyed to the circular seat 503 inside the housing 2 via the vibratory feeder mechanism 9 through the inlet 101. Then, the support assembly 5 is activated to drive the circular seat 503 to revolve around the inner wall of the housing 2 and rotate simultaneously. When the circular seat 503 is misaligned with the inlet 101, the limiting assembly 7 separates from the first part of the adjusting assembly 6. At this time, the limiting assembly 7 descends to limit the workpiece 8 and can confine the workpiece 8 to the center of the circular seat 503, so that the circular seat 503 drives the workpiece 8 to revolve around the inner wall and rotate simultaneously. Next, the circular seat 503 drives the workpiece 8 through the quenching mechanism 3 to complete induction quenching and obtain the quenched area 801. Then, the circular seat 503 contacts the second part of the adjusting assembly 6 and is located above the water tank 4. At this time, the adjusting assembly 6 causes the circular seat 503 and the workpiece 8 to descend, so that the quenched area 801 of the workpiece 8 is immersed in the cooling medium of the water tank 4 to complete the cooling. Next, the round seat 503 separates from the adjusting component 6 and drives the workpiece 8 to leave the water tank 4. At this time, the round seat 503 drives the cooled workpiece 8 to move towards the outlet 102 and contact the third part of the adjusting component 6, so that the limiting component 7 releases the limiting of the workpiece 8 and the push plate 10 completes the ejection and unloading.
Claims
1. A quenching device for high-strength bolts, comprising a worktable and a housing, a water tank, and a quenching mechanism fixedly mounted on the worktable, wherein the worktable and the housing share an inlet and an outlet, characterized in that, The housing is internally provided with a support assembly for supporting the workpiece. The support assembly includes a circular seat for holding the workpiece, and a limiting assembly for limiting the workpiece on the circular seat. The housing is internally provided with an adjustment assembly that corresponds to the positions of the circular seat and the limiting assembly. When the circular seat moves away from the inlet, the limiting assembly can limit the workpiece to the center of the circular seat by adjusting the assembly. When the circular seat moves above the water tank, the adjusting assembly can drive the circular seat and the limited workpiece to descend. The support assembly also includes a motor fixedly mounted on the workbench, a turntable fixedly mounted on the output shaft of the motor, a gear fixedly mounted on the outer surface of the round base, a gear ring fixedly mounted on the inner wall of the housing for meshing and transmission with the gear, and a first spring fixedly mounted on the top of the turntable for abutting against the end face of the gear. The outer surface of the circular base has an opening, and the bottom of the circular base has an elongated hole that communicates with the opening. The limiting component is located inside the opening and corresponds vertically to the elongated hole. The limiting component includes a support rod slidably installed in a circular seat, a circular plate for limiting the workpiece and corresponding to the position of the adjusting component is fixedly installed at the bottom of the support rod, and a second spring is sleeved on the outer surface of the support rod; The adjustment assembly includes a first patch, a pressure block, and a second patch fixedly installed on the inner wall of the housing. The first patch, the pressure block, and the second patch correspond vertically to the inlet, the water tank, and the outlet, respectively. Both sides of the first patch, the pressure block, and the second patch are provided with inclined surfaces. The thickness of the gear ring along the axial direction of the housing is greater than the thickness of the gear along the axial direction of the housing; when the turntable is started, it can drive the round seat to revolve and rotate through the gear and gear ring; when the round seat rotates to correspond to the inlet and outlet, the opening and the elongated hole correspond to the inlet and outlet respectively. The circular plate and the circular seat are arranged concentrically. An arc groove is provided at the center of the bottom of the circular plate. Through the concentric arrangement and the arc groove, the workpiece can be limited to the center of the circular seat after the circular plate is lowered. When the circular seat rotates, it can drive the workpiece to rotate stably based on the center, so that the distance between the workpiece and the quenching mechanism and the water tank is maintained at an appropriate distance. The inclined surfaces of the first patch and the second patch are in the same direction and opposite to the inclined surface of the pressure block. The inclined surfaces of the first patch and the second patch are used to guide the circular plate to move up and down, and the inclined surface of the pressure block is used to guide the circular base to move up and down.
2. The quenching equipment for high-strength bolts according to claim 1, characterized in that, The turntable has several slots running through it along its axial direction, and the number of round seats matches the number of slots and is arranged in a one-to-one correspondence.
3. A method for manufacturing high-strength bolts, using the quenching equipment for high-strength bolts as described in claim 1 or 2, characterized in that, Includes the following steps: S1. The workpiece is transported into the housing and supported by the round seat. The support assembly is started to drive the round seat to revolve and rotate within the housing. When the round seat moves and is misaligned with the inlet, the workpiece is limited to the center of the round seat by the adjustment assembly and the limiting assembly. S2. The round seat moves the workpiece and passes through the quenching mechanism and water tank in sequence. When passing through the quenching mechanism, the quenching is completed to obtain the quenched area. When passing through the water tank, the round seat contacts the adjusting component. At this time, the adjusting component causes the round seat and the workpiece to descend, so that the quenched area of the workpiece is immersed in the cooling medium in the water tank to complete the cooling. S3. The round seat moves the workpiece closer to the outlet. At this time, the limiting component and the adjusting component come into contact, causing the limiting component to release the workpiece. The workpiece can then be unloaded at the outlet.