A device for surface nitriding of cemented carbide

Abstract

This utility model discloses a cemented carbide surface nitriding treatment device, including a nitriding furnace. A rotary motor is mounted on the upper surface of the nitriding furnace. Symmetrical first bearings are embedded in the inner wall of the nitriding furnace. The inner rings of the two first bearings are connected to a rotating rod. The output end of the rotary motor is connected to the top of the rotating rod through one of the first bearings. A first bevel gear is connected to the outer surface of the rotating rod. A second bearing is embedded in the inner wall of the nitriding furnace, and threaded rods are respectively connected to the inner rings of the two second bearings. This device drives the rotating rod to rotate via the rotary motor, causing the first bevel gear to simultaneously mesh with the second bevel gear and rotate. The rotating second bevel gear drives the threaded rods to rotate, causing two sets of clamping plates to simultaneously hold the metal part. This design ensures the stability of the workpiece during the nitriding process and avoids the workpiece slippage problem that may occur with traditional compression spring clamping.

Description

Technical Field

[0001] This utility model relates to the field of nitriding technology, and in particular to a device for nitriding surface treatment of cemented carbide. Background Technology

[0002] Nitriding is a chemical heat treatment technology that allows nitrogen atoms to penetrate into the surface layer of a workpiece under specific temperature and medium conditions. This process significantly improves the wear resistance, fatigue resistance, corrosion resistance, and high temperature resistance of the product. Nitriding is widely used in various industrial fields, especially in applications requiring high wear resistance, high corrosion resistance, and high fatigue strength.

[0003] CN212044342U discloses a nitriding treatment apparatus for metal processing. It includes a metal part clamping device within the nitriding furnace, with multiple sets to facilitate metal part clamping and increase the amount of metal parts nitrided. A compression spring elastically controls the relationship between the fixed plate and the moving plate, allowing them to move closer together in a natural state to clamp the metal part. However, in the aforementioned patent, the clamping structure merely uses a compression spring to hold the workpiece between the two plates. This clamping method makes the workpiece very easy to fall off. Therefore, we propose a cemented carbide surface nitriding treatment apparatus to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a device for nitriding treatment of cemented carbide surfaces to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A cemented carbide surface nitriding treatment apparatus includes a nitriding furnace. A rotary motor is mounted on the upper surface of the nitriding furnace. Symmetrical first bearings are embedded in the inner wall of the nitriding furnace. The inner rings of the two first bearings are connected to a rotating rod. The output end of the rotary motor is connected to the top end of the rotating rod through one of the first bearings. A first bevel gear is connected to the outer surface of the rotating rod. A second bearing is embedded in the inner wall of the nitriding furnace. Threaded rods are respectively connected to the inner rings of the two second bearings. A second bevel gear is connected to the end of each of the two threaded rods that is close to each other. Both second bevel gears mesh with the first bevel gear. Symmetrical clamps are threaded to the outer surfaces of both threaded rods.

[0007] In a further embodiment, the inner bottom wall of the nitriding furnace is provided with symmetrical sliding grooves, and symmetrical sliders are slidably connected inside the two sliding grooves. The upper surfaces of the two sets of sliders are connected to the bottom surface of the clamping plate.

[0008] In a further embodiment, protective pads are connected to the sides of the two sets of clamps that are close to each other, and both sets of protective pads are made of graphite.

[0009] In a further embodiment, the outer surface of the nitriding furnace is provided with symmetrical circular grooves, and symmetrical support rods are slidably connected inside the two circular grooves. The ends of the two threaded rods that are far apart from each other pass through the nitriding furnace and extend to the outside of the nitriding furnace. The ends of the two threaded rods that are far apart from each other are connected to circular plates, and the sides of the two circular plates that are close to each other are connected to the ends of the two sets of support rods that are far apart from each other.

[0010] In a further embodiment, the outer surface of the nitriding furnace is provided with a sealing door, and a door handle is connected to the outer surface of the sealing door.

[0011] In a further embodiment, the bottom surface of the nitriding furnace is connected to two sets of support legs, and the bottom ends of the two sets of support legs are connected to support bases.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This device uses a rotary motor to drive a rotating rod to rotate, causing the first bevel gear to mesh with the second bevel gear and rotate. The rotating second bevel gear drives the threaded rod to rotate, so that the two sets of clamping plates simultaneously hold the metal parts. This design ensures the stability of the workpiece during the nitriding process and avoids the problem of workpiece falling off that may be caused by traditional compression spring clamping. Attached Figure Description

[0014] Figure 1 This is a front view schematic diagram of the cemented carbide surface nitriding treatment device.

[0015] Figure 2 This is a schematic diagram of the front section structure of a cemented carbide surface nitriding treatment device.

[0016] Figure 3 For cemented carbide surface nitriding treatment equipment Figure 2 A magnified structural diagram of part A in the middle.

[0017] Figure 4 This is a side view schematic diagram of a cemented carbide surface nitriding treatment device.

[0018] In the diagram: 1. Nitriding furnace; 2. Rotary motor; 3. Rotating rod; 4. First bevel gear; 5. First bearing; 6. Slide groove; 7. Sliding block; 8. Protective pad; 9. Second bearing; 10. Clamping plate; 11. Threaded rod; 12. Circular groove; 13. Support rod; 14. Circular plate; 15. Sealing door; 16. Door handle; 17. Support leg; 18. Support base; 19. Second bevel gear. Detailed Implementation

[0019] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4In this utility model, a cemented carbide surface nitriding treatment device includes a nitriding furnace 1. A rotary motor 2 is mounted on the upper surface of the nitriding furnace 1. Symmetrical first bearings 5 ​​are embedded in the inner wall of the nitriding furnace 1. The inner rings of the two first bearings 5 ​​are connected to a rotating rod 3. The output end of the rotary motor 2 is connected to the top end of the rotating rod 3 through one of the first bearings 5. A first bevel gear 4 is connected to the outer surface of the rotating rod 3. Second bearings 9 are embedded in the inner wall of the nitriding furnace 1. Threaded rods 11 are respectively connected to the inner rings of the two second bearings 9. Two threaded rods 11 are connected to a second bevel gear 19 at their close ends. Both second bevel gears 19 mesh with the first bevel gear 4. The outer surfaces of both threaded rods 11 are threaded with symmetrical clamping plates 10. The rotating rod 3 is driven by the rotary motor 2 to mesh the first bevel gear 4 with the second bevel gear 19, thereby causing the threaded rods 11 to rotate. This achieves synchronous clamping of the metal workpiece by the two sets of clamping plates 10, ensuring the stability of the workpiece during the nitriding process. Both threaded rods 11 have symmetrical threads.

[0023] The inner bottom wall of the nitriding furnace 1 is provided with symmetrical sliding grooves 6. Symmetrical sliders 7 are slidably connected inside the two sliding grooves 6. The upper surfaces of the two sets of sliders 7 are connected to the bottom surface of the clamping plate 10. By sliding the sliders 7 inside the sliding grooves 6, the clamping plate 10 can be limited.

[0024] The two sets of clamping plates 10 are connected to protective pads 8 on their adjacent sides. Both sets of protective pads 8 are made of graphite. By providing protective pads 8, not only is the friction between the workpiece and the clamping plate 10 reduced and the workpiece surface damaged, but also good thermal conductivity is provided, which helps to achieve uniform temperature distribution during the nitriding process.

[0025] The outer surface of the nitriding furnace 1 is provided with symmetrical circular grooves 12. Symmetrical support rods 13 are slidably connected inside the two circular grooves 12. The ends of the two threaded rods 11 that are far apart from each other pass through the nitriding furnace 1 and extend to the outside of the nitriding furnace 1. The ends of the two threaded rods 11 that are far apart from each other are connected to circular plates 14. The sides of the two circular plates 14 that are close to each other are connected to the ends of the two sets of support rods 13 that are far apart from each other. The threaded rods 11 drive the circular plates 14 to rotate, so that the support rods 13 slide in the circular grooves 12. This effectively disperses the force on the threaded rods 11 during rotation, avoids deformation or damage that may occur due to long-term use, and further improves the durability and reliability of the device.

[0026] The outer surface of the nitriding furnace 1 is provided with a sealing door 15, and a door handle 16 is connected to the outer surface of the sealing door 15. The design of the sealing door 15 and the door handle 16 makes it more convenient to load and unload the workpiece.

[0027] The bottom surface of the nitriding furnace 1 is connected to two sets of support legs 17, and the bottom ends of the two sets of support legs 17 are connected to support seats 18. The cooperation between the support legs 17 and the support seats 18 ensures the safety and stability of the device during operation.

[0028] The working principle of this utility model is as follows:

[0029] During use, the workpiece is placed between the two clamping plates 10. The rotary motor 2 rotates through the first bearing 5 and the rotating rod 3. The rotating rod 3 drives the first bevel gear 4 to rotate. Because the first bevel gear 4 meshes with the second bevel gear 19, the rotating first bevel gear 4 drives the threaded rod 11 to rotate through the second bevel gear 19. The rotating threaded rod 11 drives the clamping plates 10 to move relative to each other, thus clamping the workpiece.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for surface nitriding of cemented carbide, characterised in that: The nitriding furnace (1) includes a rotary motor (2) mounted on its upper surface. The inner wall of the nitriding furnace (1) is inlaid with symmetrical first bearings (5). The inner rings of the two first bearings (5) are connected to a rotating rod (3). The output end of the rotary motor (2) is connected to the top of the rotating rod (3) through one of the first bearings (5). The outer surface of the rotating rod (3) is connected to a first bevel gear (4). The inner wall of the nitriding furnace (1) is inlaid with a second bearing (9). The inner rings of the two second bearings (9) are respectively connected to threaded rods (11). The ends of the two threaded rods (11) that are close to each other are connected to second bevel gears (19). The two second bevel gears (19) mesh with the first bevel gears (4). The outer surfaces of the two threaded rods (11) are threaded with symmetrical clamps (10).

2. The cemented carbide surface nitriding treatment apparatus according to claim 1, characterized in that: The inner bottom wall of the nitriding furnace (1) is provided with symmetrical sliding grooves (6), and symmetrical sliders (7) are slidably connected inside the two sliding grooves (6). The upper surfaces of the two sets of sliders (7) are connected to the bottom surface of the clamping plate (10).

3. The cemented carbide surface nitriding treatment apparatus according to claim 1, characterized in that: Both sets of clamps (10) have protective pads (8) connected to each other on their adjacent sides, and both sets of protective pads (8) are made of graphite.

4. The cemented carbide surface nitriding treatment apparatus according to claim 1, characterized in that: The outer surface of the nitriding furnace (1) is provided with symmetrical circular grooves (12). The interior of each of the two circular grooves (12) is slidably connected with symmetrical support rods (13). The ends of the two threaded rods (11) that are far apart from each other pass through the nitriding furnace (1) and extend to the outside of the nitriding furnace (1). The ends of the two threaded rods (11) that are far apart from each other are connected with circular plates (14). The sides of the two circular plates (14) that are close to each other are connected to the ends of the two sets of support rods (13) that are far apart from each other.

5. The cemented carbide surface nitriding treatment apparatus according to claim 1, characterized in that: The outer surface of the nitriding furnace (1) is provided with a sealing door (15), and a door handle (16) is connected to the outer surface of the sealing door (15).

6. The cemented carbide surface nitriding treatment apparatus according to claim 1, characterized in that: The bottom surface of the nitriding furnace (1) is connected to two sets of support legs (17), and the bottom ends of the two sets of support legs (17) are connected to support seats (18).

Images