Metal fastener contact surface quenching equipment

Abstract

The invention relates to the technical field of quenching, in particular to metal fastener contact surface quenching equipment which comprises a base, an inner shell is fixedly connected to the base, an outer shell is fixedly connected to the outer side of the inner shell, and the outer shell communicates with the inner shell through a one-way conduction mechanism; a supporting frame is fixedly connected to the outer shell, a telescopic rod is fixedly connected to the supporting frame, a supporting plate is fixedly connected to the telescopic rod, and a plurality of through holes are formed in the supporting plate; a partition plate is fixedly connected into the inner shell, a rectangular groove is formed in the middle of the partition plate, a sealing layer is arranged on the inner wall of the rectangular groove, a moving part abuts against the sealing layer, a connecting blind hole is formed in the moving part, a rotating shaft is arranged in the connecting blind hole, and a cooling water overflow mechanism is arranged between the rotating shaft and the connecting blind hole. The device has the advantages that the quenching and hardening thickness can be controlled, and the accuracy of the hardening thickness is ensured, so that the local quenching effect is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of quenching, and in particular to a contact surface quenching device for a metal fastener. Background Art

[0002] Quenching is a heat treatment process that heats the workpiece to austenite and then cools it in an appropriate manner to obtain a martensite or bainite structure. When quenching the contact surface of a fastener, it is necessary to perform local quenching on the contact surface to improve the hardness and wear resistance of the fastener contact surface, so that it is not easy to wear when subjected to external force, thereby extending the service life of the fastener. When quenching the contact surface of fasteners such as nuts, washers, and retaining rings, the fasteners are generally quenched by placing them in water. During quenching, water evaporates, causing the water level in the quenching tank to drop, resulting in the contact surface of the fastener being immersed in water. The depth of the contact surface will change when quenching, which is difficult to control, resulting in a change in the thickness of the quenched hardened surface. There is a large error between the quenched hardened thickness and the standard hardened thickness, which affects the effect of local quenching of the fastener. Summary of the invention

[0003] The purpose of the present invention is to solve the problem in the prior art that the depth of the contact surface immersed in water is difficult to control, which affects the effect of local quenching of the fastener, and to propose a metal fastener contact surface quenching device.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions: A metal fastener contact surface quenching device is designed, comprising a base, an inner shell is fixedly connected to the base, an outer shell is fixedly connected to the outer side of the inner shell, and the outer shell is connected to the inner shell through a unidirectional conduction mechanism; The outer shell is fixedly connected with a support frame, the support frame is fixedly connected with a telescopic rod, the telescopic rod is fixedly connected with a support plate, and the support plate is provided with a plurality of through holes; A partition is fixedly connected inside the inner shell body, a rectangular groove is opened in the middle of the partition, a sealing layer is arranged on the inner wall of the rectangular groove, a moving part is abutted on the sealing layer, a connecting blind hole is opened on the moving part, a rotating shaft is arranged in the connecting blind hole, and a cooling water overflow mechanism is arranged between the rotating shaft and the connecting blind hole.

[0005] Preferably, the cooling water overflow mechanism includes a spiral chute, which is opened on the rotating shaft, and a vertical chute is opened on the rotating shaft. The vertical chute is connected to the spiral chute end to end, and a slider is slidably arranged in the spiral chute, and the slider is fixedly connected to the inner wall of the connecting blind hole, and the slider moves into the vertical chute along with the rotating mechanism.

[0006] Preferably, the rotating shaft is rotatably connected to the base via a bearing.

[0007] Preferably, the rotating mechanism includes a motor, which is mounted on the base, and the output shaft of the motor is transmission-connected with a second gear, the second gear is meshed with a first gear, the first gear is fixedly connected to the rotating shaft, and the number of teeth of the first gear is greater than the number of teeth of the second gear.

[0008] Preferably, the one-way conducting mechanism comprises a connecting pipe, the connecting pipe is connected to the inner shell body and the other end is connected to the outer shell body, and a one-way valve is arranged on the connecting pipe.

[0009] Preferably, the motor is a low-speed motor.

[0010] Preferably, a limiting groove is provided on the rotating shaft, the limiting groove is communicated with the vertical sliding groove, a support block is slidably arranged in the limiting groove, the support block is fixedly connected with a connecting rod, a rotating sleeve is sleeved on the connecting rod, a reciprocating thread is provided on the connecting rod, the reciprocating thread is threadedly connected with the rotating sleeve, a driven bevel gear is fixedly connected to the rotating sleeve, the driven bevel gear is meshed with an active bevel gear, the active bevel gear is fixedly connected to a connecting shaft, the connecting shaft is rotatably connected to a fixing frame via a bearing, the fixing frame is fixedly connected to the rotating shaft, the rotating sleeve is rotatably connected to the fixing frame via a bearing, the connecting shaft is fixedly connected to a third gear, the third gear is meshed with a gear ring, the gear ring is fixedly connected to a column, and the column is fixedly connected to the base.

[0011] Preferably, a thermometer is provided on the outer shell.

[0012] The present invention proposes a metal fastener contact surface quenching device, which has the beneficial effect that when the water level of the application reaches the highest, it will overflow from the upper surface of the inner shell body, and the distance from the upper surface of the support plate to the upper surface of the inner shell body can be adjusted by extending and retracting the telescopic rod. When the fastener is placed on the support plate, the depth of the fastener immersed in water is the distance from the upper surface of the support plate to the upper surface of the inner shell body. Since the highest water level remains unchanged, the position of the support plate remains unchanged, thereby accurately controlling the depth of the fastener immersed in water. When quenching, the quenching hardening thickness is controlled to ensure the accuracy of the hardening thickness, which is beneficial to the effect of local quenching. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of a metal fastener contact surface quenching device proposed by the present invention; Figure 2 A three-dimensional cross-sectional view of a metal fastener contact surface quenching device proposed by the present invention; Figure 3A metal fastener contact surface quenching device proposed by the present invention Figure 2 A front view of Figure 4 A three-dimensional diagram of a moving part of a metal fastener contact surface quenching device proposed by the present invention; Figure 5 A three-dimensional view of the rotating shaft part of a metal fastener contact surface quenching device proposed by the present invention Figure 1 ; Figure 6 A three-dimensional view of the rotating shaft part of a metal fastener contact surface quenching device proposed by the present invention Figure 2 ; Figure 7 A metal fastener contact surface quenching device proposed by the present invention Figure 6 Front view of .

[0014] In the figure: 1. outer shell; 2. support frame; 3. telescopic rod; 4. support plate; 5. inner shell; 6. base; 7. moving part; 8. partition; 9. connecting pipe; 10. rotating shaft; 11. gear ring; 12. column; 13. first gear; 14. motor; 15. second gear; 16. connecting blind hole; 17. spiral slide; 18. slider; 19. third gear; 20. driven bevel gear; 21. driving bevel gear; 22. support block; 23. rotating sleeve; 24. connecting rod; 25. fixed frame; 26. vertical slide; 27. connecting shaft. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0016] Example 1: Reference Figure 1-3 A metal fastener contact surface quenching device includes a base 6, an inner shell 5 is fixedly connected to the base 6, an outer shell 1 is fixedly connected to the outer side of the inner shell 5, a thermometer is arranged on the outer shell 1, and the thermometer measures the water temperature in the outer shell 1. The outer shell 1 and the inner shell 5 are connected through a unidirectional conduction mechanism. When the water in the inner shell 5 overflows and flows out, the water is received by the outer shell 1 and re-introduced into the inner shell 5 through the connecting pipe 9 for reflux.

[0017] The one-way conduction mechanism includes a connecting pipe 9, which is connected to the inner shell 5 and the other end is connected to the outer shell 1. A one-way valve is provided on the connecting pipe 9 to prevent water from being squeezed into the outer shell 1 when the moving part 7 rises.

[0018] A support frame 2 is fixedly connected to the outer shell 1, and a telescopic rod 3 is fixedly connected to the support frame 2. A support plate 4 is fixedly connected to the telescopic rod 3. A plurality of through holes are opened on the support plate 4 for water to pass through. When the water level in the inner shell 5 rises, the fasteners on the support plate 4 are quenched. When the water level reaches the highest, it will overflow from the upper surface of the inner shell 5 and flow into the outer shell 1, and be extended and retracted by the telescopic rod 3, thereby adjusting the distance from the upper surface of the support plate 4 to the upper surface of the inner shell 5. When the fastener is placed on the support plate 4, the depth of the fastener immersed in water is the distance from the upper surface of the support plate 4 to the upper surface of the inner shell 5. Since the highest water level remains unchanged, the position of the support plate 4 remains unchanged, thereby accurately controlling the depth of the fastener immersed in water. When quenching, the quenching hardening thickness is controlled to ensure the accuracy of the hardening thickness, which is beneficial to the effect of local quenching.

[0019] A partition 8 is fixedly connected inside the inner shell 5, a rectangular groove is opened in the middle of the partition 8, a sealing layer is arranged on the inner wall of the rectangular groove, a moving part 7 is abutted on the sealing layer, a connecting blind hole 16 is opened on the moving part 7, a rotating shaft 10 is arranged in the connecting blind hole 16, and a cooling water overflow mechanism is arranged between the rotating shaft 10 and the connecting blind hole 16. The overflow mechanism is adopted to drive the moving part 7 to rise slowly, resulting in an increase in the volume of the moving part 7 entering the inner shell 5, thereby raising the water level in the inner shell 5 and overflowing from the upper end of the inner shell 5, ensuring that the contact surface of the fastener is immersed in water to a certain depth, thereby controlling the thickness of the quenching hardening.

[0020] Embodiment 2: In embodiment 1, when the moving part 7 is raised to overflow the water, a threaded connection is generally used. During quenching, the liquid needs to overflow slowly, but after the quenching, the moving part 7 needs to be quickly reset to prevent the reset time from being prolonged and to avoid wasting time, so as to carry out the next quenching operation. Figure 1-7 , as another preferred embodiment of the present invention, based on Example 1.

[0021] The cooling water overflow mechanism includes a spiral chute 17, which is provided on the rotating shaft 10. A vertical chute 26 is provided on the rotating shaft 10. The vertical chute 26 is connected to the spiral chute 17 end to end. A slider 18 is slidably arranged in the spiral chute 17. The slider 18 is fixedly connected to the inner wall of the connecting blind hole 16. The slider 18 moves into the vertical chute 26 along with the rotating mechanism. When the rotating shaft 10 rotates, the spiral chute 17 will be driven to rotate, thereby adjusting the position of the slider 18 in the spiral chute 17, so that the slider 18 rises, thereby driving the moving part 7 to rise. When quenching is completed and the moving part 7 needs to be reset, the slider 18 enters the vertical chute 26. Under the action of gravity, the slider 18 quickly moves to the bottom of the vertical chute 26, and the moving part 7 is quickly reset, ensuring that the time for resetting is very short, avoiding the situation where time is wasted due to slow resetting.

[0022] The rotating shaft 10 is rotatably connected to the base 6 through a bearing. The rotating mechanism includes a motor 14. The motor 14 is a low-speed motor. The motor 14 rotates slowly. The motor 14 is installed on the base 6. The output shaft of the motor 14 is transmission-connected with a second gear 15. The second gear 15 is meshed with a first gear 13. The first gear 13 is fixedly connected to the rotating shaft 10. The motor 14 is rotated to drive the second gear 15 to rotate, so that the second gear 15 drives the first gear 13 to rotate, which will drive the rotating shaft 10 to rotate. Since the number of teeth of the first gear 13 is greater than the number of teeth of the second gear 15, the first gear 13 is rotated at a reduced speed to drive the rotating shaft 10 to rotate slowly, so that the moving part 7 rises slowly.

[0023] Embodiment 3: In Embodiment 2, when the moving part 7 descends, the slider 18 enters the vertical slide groove 26 under the action of gravity, which will generate an impact force on the bottom wall of the vertical slide groove 26, so that the impact force is concentrated here, resulting in stress concentration, which is easy to cause local deformation, cracks or damage, so that the bottom wall of the vertical slide groove 26 is easily damaged, causing the slider 18 to enter the bottom wall of the vertical slide groove 26. Due to the damage to the bottom wall of the vertical slide groove 26, the slider 18 cannot smoothly enter the spiral slide groove 17 when the shaft 10 rotates, which easily causes the shaft slider 18 to remain in the vertical slide groove 26, so that the shaft 10 cannot rotate, affecting the normal operation of the device, refer to Figure 1-7As another preferred embodiment of the present invention, on the basis of embodiment 2, a limiting groove is provided on the rotating shaft 10, the limiting groove is connected with the vertical slide groove 26, a support block 22 is slidably arranged in the limiting groove, a connecting rod 24 is fixedly connected to the support block 22, a rotating sleeve 23 is sleeved on the connecting rod 24, a reciprocating thread is provided on the connecting rod 24, the reciprocating thread is threadedly connected with the rotating sleeve 23, a driven bevel gear 20 is fixedly connected to the rotating sleeve 23, a driving bevel gear 21 is meshed with the driven bevel gear 20, a connecting shaft 27 is fixedly connected to the driving bevel gear 21, the connecting shaft 27 is rotatably connected to the fixing frame 25 through a bearing, the fixing frame 25 is fixedly connected to the rotating shaft 10, the rotating sleeve 23 is rotatably connected to the fixing frame 25 through a bearing, a third gear 19 is fixedly connected to the connecting shaft 27, and a third gear 19 is fixedly connected to the connecting shaft 27. A gear ring 11 is meshed on the gear 19, and a column 12 is fixedly connected to the gear ring 11. The column 12 is fixedly connected to the base 6. When the rotating shaft 10 rotates, the third gear 19 will be driven to revolve. Since the gear ring 11 does not rotate, the third gear 19 will be driven to rotate, so that the active bevel gear 21 drives the driven bevel gear 20 to rotate, and the driven bevel gear 20 drives the rotating sleeve 23 to rotate, and the position of the connecting rod 24 in the rotating sleeve 23 is adjusted, thereby driving the support block 22 to slide in the limiting groove, and changing the lower end part of the support block 22 located in the vertical slide groove 26, so as to disperse the stress, prevent the concentration of stress, and avoid the damage to the bottom wall of the vertical slide groove 26, so that the slider 18 can smoothly enter the spiral slide groove 17, thereby extending the service life of the device.

[0024] When quenching, first adjust the distance from the upper surface of the support plate 4 to the upper surface of the inner shell 5 according to the required quenching hardening thickness, then place the heated fastener on the support plate 4, and the motor 14 slowly rotates to drive the second gear 15 to rotate, so that the second gear 15 drives the first gear 13 to rotate, which will drive the rotating shaft 10 to rotate, and drive the spiral slide 17 to rotate, thereby adjusting the position of the slider 18 in the spiral slide 17, so that the slider 18 rises, thereby driving the moving part 7 to rise, resulting in an increase in the volume of the moving part 7 entering the inner shell 5, thereby raising the water level in the inner shell 5, and the water overflows from the upper end of the inner shell 5, ensuring that the fastener contact surface is immersed in the water to a certain depth, and then The slider 18 is quenched and aligned with the vertical slide groove 26. Under the action of the gravity of the moving part 7, the slider 18 slides and falls in the vertical slide groove 26, and the moving part 7 is quickly reset. The water in the outer shell 1 is reintroduced into the inner shell 5 through the connecting pipe 9 for reflux. At the same time, when the rotating shaft 10 rotates, the third gear 19 is driven to revolve, and the third gear 19 is driven to rotate, so that the active bevel gear 21 drives the driven bevel gear 20 to rotate, and the driven bevel gear 20 drives the rotating sleeve 23 to rotate, and the position of the connecting rod 24 in the rotating sleeve 23 is adjusted, thereby driving the support block 22 to slide back and forth in the limiting groove, and the support block 22 is changed at the lower end of the vertical slide groove 26.

[0025] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A metal fastener contact surface quenching device, comprising a base (6), an inner shell (5) fixedly connected to the base (6), an outer shell (1) fixedly connected to the outer side of the inner shell (5), characterized in that: The outer shell (1) and the inner shell (5) are connected via a one-way conducting mechanism; The outer shell (1) is fixedly connected to a support frame (2), the support frame (2) is fixedly connected to a telescopic rod (3), the telescopic rod (3) is fixedly connected to a support plate (4), the support plate (4) is provided with a plurality of through holes, the support plate (4) is located in the inner shell (5), and the rising water level in the inner shell (5) quenches the fasteners on the support plate (4); A partition plate (8) is fixedly connected inside the inner shell (5), a rectangular groove is provided in the middle of the partition plate (8), a sealing layer is provided on the inner wall of the rectangular groove, a movable part (7) is abutted on the sealing layer, a connecting blind hole (16) is provided on the movable part (7), a rotating shaft (10) is provided in the connecting blind hole (16), and a cooling water overflow mechanism is provided between the rotating shaft (10) and the connecting blind hole (16).

2. A metal fastener contact surface quenching equipment according to claim 1, characterized in that: The cooling water overflow mechanism comprises a spiral chute (17), wherein the spiral chute (17) is provided on the rotating shaft (10), wherein a vertical chute (26) is provided on the rotating shaft (10), wherein the vertical chute (26) is connected end to end with the spiral chute (17), wherein a slider (18) is slidably arranged in the spiral chute (17), wherein the slider (18) is fixedly connected to the inner wall of the connecting blind hole (16), and wherein the slider (18) moves into the vertical chute (26) along with the rotating mechanism.

3. A metal fastener contact surface quenching equipment according to claim 1, characterized in that: The rotating shaft (10) is rotatably connected to the base (6) via a bearing.

4. A metal fastener contact surface quenching equipment according to claim 2, characterized in that: The rotating mechanism comprises a motor (14), the motor (14) being mounted on the base (6), the output shaft of the motor (14) being transmission-connected to a second gear (15), the second gear (15) being meshed with a first gear (13), the first gear (13) being fixedly connected to the rotating shaft (10), the number of teeth of the first gear (13) being greater than the number of teeth of the second gear (15).

5. A metal fastener contact surface quenching equipment according to any one of claims 1 to 4, characterized in that: The one-way conduction mechanism comprises a connecting pipe (9), wherein the connecting pipe (9) is connected to the inner shell (5) at one end and is connected to the outer shell (1) at the other end, and a one-way valve is provided on the connecting pipe (9).

6. A metal fastener contact surface quenching equipment according to claim 4, characterized in that: The motor (14) is a low-speed motor.

7. A metal fastener contact surface quenching device according to claim 6, characterized in that: The rotating shaft (10) is provided with a limiting groove, the limiting groove is communicated with the vertical sliding groove (26), a support block (22) is slidably arranged in the limiting groove, a connecting rod (24) is fixedly connected to the support block (22), a rotating sleeve (23) is sleeved on the connecting rod (24), a reciprocating thread is arranged on the connecting rod (24), the reciprocating thread is threadedly connected to the rotating sleeve (23), a driven bevel gear (20) is fixedly connected to the rotating sleeve (23), the driven bevel gear (20) is meshed with a driving bevel gear (21), the driving A connecting shaft (27) is fixedly connected to the bevel gear (21); the connecting shaft (27) is rotatably connected to a fixing frame (25) via a bearing; the fixing frame (25) is fixedly connected to the rotating shaft (10); the rotating sleeve (23) is rotatably connected to the fixing frame (25) via a bearing; a third gear (19) is fixedly connected to the connecting shaft (27); a gear ring (11) is meshed with the third gear (19); a column (12) is fixedly connected to the gear ring (11); and the column (12) is fixedly connected to the base (6).

8. A metal fastener contact surface quenching device according to claim 7, characterized in that: A thermometer is provided on the outer shell (1).

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