A vacuum furnace carburizing and quenching heat treatment fixture

Abstract

This utility model discloses a vacuum furnace carburizing and quenching heat treatment fixture, relating to the field of heat treatment process technology. It includes a support plate with multiple first screw holes and multiple vents at its top. A vertical column is located at the top of each first screw hole, and a pad is fixedly connected to the bottom of the vertical column. An externally threaded rod is fixedly connected to the bottom of the pad. A second screw hole is located at the top of the vertical column, and a sleeve is fitted onto the outer side of the vertical column. A horizontal plate is fixedly connected to the side wall of the sleeve, and multiple notches are located at the top of the horizontal plate. A crossbar is placed inside each notch. This utility model, through a series of structural features, allows the number of support rods to be flexibly increased or decreased according to the number of metal parts, thereby facilitating the fixture to meet different support requirements for metal parts and accelerating the flow of hot air between adjacent metal parts, thus improving the carburizing and quenching effect of the metal parts.

Description

Technical Field

[0001] This utility model relates to the field of heat treatment technology, specifically to a vacuum furnace carburizing and quenching heat treatment fixture. Background Technology

[0002] Vacuum furnace carburizing and quenching is a heat treatment process that involves placing metal parts in a vacuum furnace and improving their surface hardness and wear resistance through two main steps: carburizing and quenching. It is widely used in the automotive, aerospace, and machinery manufacturing industries, such as for automotive gears, bearings, and molds, to improve the service life and performance of these parts. When carburizing and quenching metal parts such as automotive gears, they are usually positioned and fixed using special tooling before being placed into the vacuum furnace.

[0003] In the current tooling, because the connection between the base and the support rod is fixed, the crossbar supporting the metal parts can only be adjusted vertically along the support rod. Furthermore, the support rod cannot be adjusted to increase or decrease the number of metal parts. When a large number of metal parts are placed on the crossbar, the tooling struggles to meet the support requirements, affecting the placement of the metal parts on the tooling. Additionally, when metal parts are arranged on the tooling, they are usually placed close together to maximize the tooling's load capacity. This results in a small distance between the metal parts, making it difficult for high-temperature airflow to flow between them, thus affecting the carburizing and quenching effect of the metal parts. Utility Model Content

[0004] The purpose of this invention is to provide a vacuum furnace carburizing and quenching heat treatment fixture to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a vacuum furnace carburizing and quenching heat treatment fixture, comprising a support plate, the top of which is provided with a plurality of first screw holes and a plurality of vent holes, a vertical column is provided at the top of the first screw holes, a pad is fixedly connected to the bottom of the vertical column, an externally threaded rod is fixedly connected to the bottom of the pad, a second screw hole is provided at the top of the vertical column, a sleeve is fitted on the outer side of the vertical column, a horizontal plate is fixedly connected to the side wall of the sleeve, a plurality of notches are provided at the top of the horizontal plate, a horizontal bar is placed inside the notches, a plurality of partitions are provided on the outer side of the horizontal bar, a rotating ring is rotatably connected to the outer side of the partitions, and blades are fixedly connected to the outer wall of the rotating ring.

[0006] Preferably, the bottom end of the sleeve is fitted with the top end of the pad, the sleeve is sleeved and connected to the vertical column through the pad, and the horizontal plate is fixedly connected to the vertical column through the sleeve.

[0007] Preferably, both ends of the crossbar are fixedly connected to limit plates, and the limit plates are in contact with the side walls of the crossbar.

[0008] Preferably, a horizontal cylinder is fixedly connected to the middle of one side wall of the partition, and the top of both the horizontal cylinder and the horizontal bar are provided with insertion holes.

[0009] Preferably, a plug rod is movably inserted into the inner side of the insertion hole, and a locking block is fixedly connected to the top end of the plug rod. The cross cylinder is slidably connected to the cross bar through the plug rod.

[0010] Preferably, the external threaded rod is threadedly connected to both the first threaded hole and the second threaded hole.

[0011] Preferably, the blade is rotatably connected to the spacer via a swivel.

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

[0013] 1. This vacuum furnace carburizing and quenching heat treatment fixture, through the setting of vertical columns, external threaded rods, first threaded holes and second threaded holes, allows the vertical support rods used to support metal parts on the fixture to be flexibly adjusted in height through the free combination of multiple vertical columns. At the same time, the position of the support rods on the support plate can be flexibly adjusted, so that the number of support rods can be flexibly increased or decreased according to the number of metal parts, thereby helping the fixture to meet different support requirements for metal parts.

[0014] 2. This vacuum furnace carburizing and quenching heat treatment fixture, through the setting of air vents, partitions, rotating rings and blades, when a large number of metal parts need to be loaded on the crossbar, the two side walls of the partitions will respectively fit against the side walls of the adjacent metal parts, so that there is enough distance between the adjacent metal parts for the airflow to pass through. Furthermore, the blades on the partitions will rotate on the outer wall of the partitions under the action of the passing hot airflow, which can accelerate the flow of hot air between adjacent metal parts, thereby improving the carburizing and quenching effect of the metal parts. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the vertical column and external threaded rod structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the air vent and the first screw hole structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the sleeve and cross plate structure of this utility model;

[0019] Figure 5This is a schematic diagram of the rotating ring and blade structure of this utility model.

[0020] In the diagram: 1. Support plate; 2. First screw hole; 3. Vent; 4. Vertical column; 5. Horizontal plate; 6. Notch; 7. Sleeve; 8. Horizontal bar; 9. Limiting plate; 10. Spacer; 11. Rotary ring; 12. Insertion hole; 13. External threaded rod; 14. Pad; 15. Second screw hole; 16. Insert rod; 17. Horizontal cylinder; 18. Blade. Detailed Implementation

[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] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within 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.

[0024] like Figures 1 to 5As shown, the vacuum furnace carburizing and quenching heat treatment fixture of this embodiment includes a support plate 1. The top of the support plate 1 is provided with a plurality of first screw holes 2 and a plurality of vent holes 3. The top of the first screw holes 2 is provided with a vertical column 4. The bottom end of the vertical column 4 is fixedly connected to a pad 14. The bottom end of the pad 14 is fixedly connected to an external threaded rod 13. The top of the vertical column 4 is provided with a second screw hole 15. A sleeve 7 is sleeved on the outside of the vertical column 4. A horizontal plate 5 is fixedly connected to the side wall of the sleeve 7. The top of the horizontal plate 5 is provided with a plurality of notches 6. A horizontal bar 8 is placed inside the notches 6. A plurality of partitions 10 are provided on the outside of the horizontal bar 8. A rotating ring 11 is rotatably connected to the outside of the partitions 10. A blade 18 is fixedly connected to the outer wall of the rotating ring 11.

[0025] Specifically, the first screw hole 2 and the second screw hole 15 have the same diameter and can both be threaded into the external threaded rod 13, allowing the vertical column 4 to be freely combined and connected with other vertical columns 4 or the support plate 1 via the external threaded rod 13. This improves the flexibility of the tooling during use. The vent 3 has a "long strip" structure, allowing hot air to pass through the bottom of the support plate 1 and rise to the metal parts at the top of the support plate 1, ensuring that the metal parts come into contact with enough hot air, which is beneficial for carburizing the metal parts. The vertical column 4 is a single modular part, which can be modularly assembled and disassembled with the support plate 1 for flexible use of the tooling. The inner diameter of the sleeve 7 matches the outer diameter of the vertical column 4, allowing the sleeve 7 to slide downwards along the top of the vertical column 4, thereby connecting the sleeve 7 and the vertical column 4. The function of the horizontal plate 5 is to... The crossbar 8 is able to be smoothly mounted on the crossbar 5 so that the crossbar 8 can be smoothly mounted on the crossbar 5. The notch 6 allows the crossbar 8 to engage with the crossbar 5, thereby fixing the position of the crossbar 8 on the crossbar 5. The multiple notches 6 allow the position of the crossbar 8 on the crossbar 5 to be freely adjusted, thereby improving the flexibility of this tooling in use. The spacer 10 provides sufficient distance between the metal parts placed on the crossbar 8 so that hot air can pass between adjacent metal parts, thereby improving the carburizing effect of the metal parts. The rotating ring 11 allows the blade 18 to rotate along the outer wall of the spacer 10, thereby accelerating the flow of hot air between adjacent metal parts, thereby improving the carburizing and quenching effect of the metal parts.

[0026] Furthermore, the bottom end of the sleeve 7 is fitted with the top end of the pad 14, the sleeve 7 is connected to the vertical column 4 through the pad 14, and the horizontal plate 5 is fixedly connected to the vertical column 4 through the sleeve 7. The outer diameter of the sleeve 7 is smaller than the outer diameter of the pad 14, so that the pad 14 can support the bottom of the sleeve 7, thereby achieving a stable connection between the sleeve 7, the horizontal plate 5 and the vertical column 4.

[0027] Furthermore, both ends of the crossbar 8 are fixedly connected to limit plates 9. The limit plates 9 are in contact with the side wall of the cross plate 5. The function of the limit plates 9 is to ensure that the end of the crossbar 8 can remain connected to the limit plates 9, so as to prevent the end of the crossbar 8 from sliding off the cross plate 5 when the fixture moves, thereby improving the stability of the crossbar 8 on the fixture.

[0028] Furthermore, a horizontal cylinder 17 is fixedly connected to the middle of one side wall of the partition 10. The top of both the horizontal cylinder 17 and the horizontal bar 8 are provided with insertion holes 12. The inner diameter of the horizontal cylinder 17 is adapted to the outer diameter of the horizontal bar 8, so that the horizontal cylinder 17 can slide left and right on the horizontal bar 8 with the partition 10, thereby realizing the adjustment and change of the position of the partition 10 on the horizontal bar 8.

[0029] Furthermore, a rod 16 is movably inserted into the inner side of the insertion hole 12, and a locking block is fixedly connected to the top of the rod 16. The horizontal cylinder 17 is slidably connected to the horizontal bar 8 through the rod 16. The function of the rod 16 is to align and limit the insertion hole 12 on the horizontal bar 8 with the insertion hole 12 on the horizontal cylinder 17, so that the spacer 10 can be fixed on the horizontal bar 8 through the rod 16, thereby ensuring the stability of the spacer 10 on the horizontal bar 8.

[0030] Furthermore, the external threaded rod 13 is movably threaded through the first threaded hole 2 and the second threaded hole 15, respectively, so that the position of the support rod composed of multiple vertical columns 4 can be arbitrarily adjusted on the support plate 1. At the same time, the number of support rods composed of vertical columns 4 can be increased according to the number of metal parts loaded in the tooling, thereby facilitating the tooling to meet the loading requirements of different numbers of metal parts.

[0031] Furthermore, the blade 18 is rotatably connected to the spacer 10 via the rotating ring 11. The blade 18 can drive the rotating ring 11 to rotate under the push of the hot airflow, so that the rotating ring 11 rotates along the spacer 10, thereby increasing the speed of the hot airflow when passing between two adjacent metal parts, which is beneficial to improving the carburizing and quenching effect of the metal parts.

[0032] The usage method of this embodiment is as follows: When using this vacuum furnace carburizing and quenching heat treatment fixture, first, according to the actual number of metal parts to be loaded in the fixture, screw the external thread rod 13 at the bottom of the vertical column 4 into the first threaded hole 2 at the top of the support plate 1, so that the vertical column 4 is fixed to the support plate 1. Then, according to the size of the metal parts, screw the remaining external thread rod 13 at the bottom of the vertical column 4 into the second threaded hole 15 at the top of the vertical column 4 fixed on the support plate 1, so that the height of the vertical column 4 is stacked. As the height of the vertical column 4 is continuously stacked, the sleeve 7 can be simultaneously inserted from the top of two adjacent vertical columns 4, so that the bottom end of the sleeve 7 is in contact with the top end of the vertical column 4 pad 14. At this time, the horizontal plate 5 is connected and fixed by the support rod formed by the sleeve 7 and the vertical column 4. After the free assembly of the fixture is completed, the metal parts can be placed on the horizontal bar 8, and then the horizontal bar 8 is placed in the notch 6 of the horizontal plate 5. At this time, the limiting plates 9 at both ends of the crossbar 8 will be in contact with the side walls of the two cross plates 5 respectively. Then, according to the number of metal parts placed on the crossbar 8, the partition block 10 can be pushed to slide along the crossbar 8, so that the cross cylinder 17 on the partition block 10 slides along the insertion hole 12 on the crossbar 8. Then, the insertion rod 16 can be inserted into the insertion hole 12 at the top of the cross cylinder 17 and the top of the crossbar 8 at the same time, so that the partition block 10 is fixed to the crossbar 8, and the metal parts on the crossbar 8 are separated by the partition block 10. After the tooling is placed in the vacuum furnace to start the carburizing and quenching treatment, the hot air flow in the furnace will pass through the vent 3 at the bottom of the support plate 1, and then rise along the vent 3 and contact the metal parts mounted on the top of the support plate 1. When the hot air flow passes between two adjacent metal parts, it will push the blade 18 to rotate along the outside of the partition block 10 through the rotating ring 11, so that the flow speed of the hot air passing through the partition block 10 will increase.

[0033] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A vacuum furnace carburizing and quenching heat treatment tooling comprising a pallet (1), characterized in that: The top of the support plate (1) is provided with a plurality of first screw holes (2) and a plurality of vent holes (3). The top of the first screw hole (2) is provided with a vertical column (4). The bottom end of the vertical column (4) is fixedly connected with a pad (14). The bottom end of the pad (14) is fixedly connected with an external thread rod (13). The top of the vertical column (4) is provided with a second screw hole (15). The outside of the vertical column (4) is fitted with a sleeve (7). The side wall of the sleeve (7) is fixedly connected with a horizontal plate (5). The top of the horizontal plate (5) is provided with a plurality of notches (6). The inside of the notches (6) is placed with a horizontal bar (8). The outside of the horizontal bar (8) is provided with a plurality of partitions (10). The outside of the partitions (10) is rotatably connected with a rotating ring (11). The outer wall of the rotating ring (11) is fixedly connected with a blade (18).

2. The vacuum furnace carburizing and quenching heat treatment fixture according to claim 1, characterized in that: The bottom end of the sleeve (7) is fitted with the top end of the pad (14), the sleeve (7) is sleeved and connected to the vertical column (4) through the pad (14), and the horizontal plate (5) is fixedly connected to the vertical column (4) through the sleeve (7).

3. The vacuum furnace carburizing and quenching heat treatment tooling of claim 1, wherein: Both ends of the crossbar (8) are fixedly connected to limit plates (9), and the limit plates (9) are in contact with the side wall of the crossbar (5).

4. The vacuum furnace carburizing and quenching heat treatment tooling of claim 1, wherein: A horizontal cylinder (17) is fixedly connected to the middle of one side wall of the partition (10), and the top of the horizontal cylinder (17) and the horizontal bar (8) are provided with insertion holes (12).

5. The vacuum furnace carburizing and quenching heat treatment tooling of claim 4, wherein: A plug rod (16) is movably inserted into the inner side of the insertion hole (12), and a locking block is fixedly connected to the top of the plug rod (16). The cross cylinder (17) is slidably connected to the cross bar (8) through the plug rod (16).

6. The vacuum furnace carburizing and quenching heat treatment tooling of claim 1, wherein: The external threaded rod (13) is threadedly connected to the first threaded hole (2) and the second threaded hole (15) respectively.

7. The vacuum furnace carburizing and quenching heat treatment tooling of claim 1, wherein: The blade (18) is rotatably connected to the spacer (10) via a rotating ring (11).

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