High-hardness bell housing quenching treatment device

Abstract

The utility model discloses a high-hardness bell housing quenching treatment device which comprises a quenching bath, the quenching bath is a groove with an opening in the upper part, and a quenching screen frame is arranged at the upper part of the quenching bath; a plurality of layers of placing rack plates are arranged in the quenching screen frame, and a plurality of spaced placing racks are arranged on the placing rack plates; a plurality of longitudinal mounting grooves are longitudinally formed in the inner wall of the quenching screen frame, and limiting parts extending into the longitudinal mounting grooves are arranged at the two ends of the placing frame plate; the placing frame comprises two supporting plates, and arc-shaped grooves matched with the bell-shaped shells are formed in the supporting plates; an arc line is formed in the middle of the arc-shaped groove; the bell-shaped shells on the multiple layers of placing frame plates are separated to form clearance spaces, so that the bell-shaped shells do not make contact with one another, the bell-shaped shells only make contact with arc points, and full quenching is achieved; most scraps generated during quenching can be blocked in the quenching screen frame and then are taken out to be cleaned, meanwhile, after liquid is discharged from the liquid outlet, tiny scraps entering the quenching pool are filtered and then recycled, and then the quenching quality of the next batch cannot be affected.

Description

Technical Field

[0001] This utility model belongs to the field of bell-shaped shell processing technology, specifically relating to a high-hardness bell-shaped shell quenching treatment device. Background Technology

[0002] The bell housing in automotive CV joints is primarily used as part of the CV joint itself; specifically, it's the bell-shaped shell of the CV joint. The bell housing is a key component of the CV joint, typically consisting of the bell housing, a three-way bearing (or steel balls), a dust cover, a retaining ring, and necessary lubricant. These components work together to ensure smooth power transmission under various driving conditions.

[0003] Bell-shaped shells require quenching during machining. Quenching is a crucial process for improving the hardness, wear resistance, and service life of bell-shaped shells. Specifically, induction hardening is employed during the machining process, particularly for the spline section. Induction hardening enables the surface of the bell-shaped shell to achieve high hardness, strength, and wear resistance, while maintaining high plasticity and toughness in the core. This is highly beneficial for the performance of the bell-shaped shell under fatigue, wear, and impact conditions.

[0004] However, currently, during quenching, bell-shaped shells are generally placed haphazardly in a wire mesh frame and placed into the quenching tank for quenching. This causes the bell-shaped shells to come into direct contact with each other, resulting in insufficient contact between the bell-shaped shells and the quenching liquid. At the same time, since the bell-shaped shells need to be processed in batches, quenching debris will be generated during quenching, which will affect the quenching quality of the next batch. Summary of the Invention

[0005] This invention provides a high-hardness bell-shaped shell quenching device. The bell-shaped shells on the multi-layered rack are spaced apart to form gaps, so that the individual bell-shaped shells do not contact each other, but only contact the curved point, thus achieving full quenching. Most of the debris generated during quenching is blocked in the quenching mesh frame and then carried out for cleaning. At the same time, after the liquid is drained from the outlet, the tiny debris entering the quenching tank is filtered and recycled, so as not to affect the quenching quality of the next batch, thereby solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-hardness bell-shaped shell quenching treatment device, comprising a quenching pool, wherein the quenching pool is a groove with an opening at the top, and a quenching mesh frame is installed at the top of the quenching pool; multiple layers of placement racks are installed inside the quenching mesh frame, and multiple spaced placement racks are installed on the placement racks.

[0007] Preferably, the quenching tank is provided with an inlet and an outlet. The inlet is located near the upper edge of the quenching tank, and the outlet is installed at the bottom of the quenching tank. Both the inlet and the outlet are provided with control valves.

[0008] Preferably, the quenching mesh frame has an edge that connects to the quenching pool and is fixedly connected by fixing screws. The quenching mesh frame has a receiving cavity that extends into the quenching pool, and the quenching mesh frame is covered with mesh holes that penetrate through the inside and outside.

[0009] Preferably, the inner wall of the quenching mesh frame is provided with a plurality of longitudinal mounting grooves, the longitudinal mounting grooves passing through the top end of the quenching mesh frame but not through the bottom end, and the two ends of the placement rack are provided with limiting parts that extend into the longitudinal mounting grooves.

[0010] Preferably, the longitudinal mounting groove corresponds to different heights of the limiting portion on different placement racks.

[0011] Preferably, the edge of the quenching mesh frame is provided with lifting lugs.

[0012] Preferably, the placement rack includes two support plates, and the support plates are provided with arc-shaped grooves adapted to the bell-shaped shell.

[0013] Preferably, the arc-shaped groove protrudes from the front and rear ends toward the middle, making its cross-section an arc-shaped structure, forming an arc in the middle.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. The bell-shaped shells on the multi-layered shelf are separated to form gaps, so that the bell-shaped shells do not contact each other, but only contact the curved point. The contact area is negligible, thus achieving full quenching.

[0016] 2. Most of the debris generated during quenching will be blocked by the mesh of the quenching frame and then carried out for cleaning. At the same time, after the liquid is drained from the outlet, the tiny debris entering the quenching tank is filtered and recycled, so as not to affect the quenching quality of the next batch. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the front sectional view of the present invention;

[0018] Figure 2 This is a top view of the lower placement shelf and placement rack of this utility model.

[0019] Figure 3 This is a top view of the intermediate layer placement rack and placement frame of this utility model.

[0020] Figure 4 This is a top view of the upper placement shelf and placement rack of this utility model.

[0021] Figure 5 This is a side view schematic diagram of the support plate, arc groove, and arc-shaped structure of this utility model.

[0022] In the diagram: 1. Quenching pool; 2. Quenching mesh frame; 3. Placement rack; 4. Placement rack; 5. Liquid inlet; 6. Liquid outlet; 7. Longitudinal mounting groove; 8. Limiting part; 9. Lifting lug; 10. Support plate; 11. Arc groove; 12. Arc. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1-5 This utility model provides a high-hardness bell-shaped shell quenching treatment device, including a quenching pool 1, which is a groove with an open top, and a quenching mesh frame 2 is installed on the upper part of the quenching pool 1; the quenching mesh frame 2 is equipped with multiple layers of placement racks 3, and multiple spaced placement racks 4 are installed on the placement racks 3; during the quenching process, multiple bell-shaped shells are placed on the placement racks 4 of the multi-layer placement racks 3, so that the bell-shaped shells on the multi-layer placement racks 3 are separated to form gap spaces, and the quenching liquid enters between the multi-layer placement racks 3 through the mesh of the quenching mesh frame 2, quenching the bell-shaped shells on the placement racks 3 and placement racks 4, so that the individual bell-shaped shells do not contact each other, achieving full quenching.

[0025] Specifically, the quenching pool 1 is provided with an inlet 5 and an outlet 6. The inlet 5 is located near the upper edge of the quenching pool 1, and the outlet 6 is installed at the bottom of the quenching pool 1. Both the inlet 5 and the outlet 6 are equipped with control valves. In this embodiment, during the quenching process, quenching liquid is introduced through the inlet 5 and slowly released through the outlet 6. While ensuring that the quenching liquid in the quenching pool 1 is kept to fully submerge the bell-shaped shell inside the quenching mesh frame 2, a slow circulation of quenching liquid is formed.

[0026] Specifically, the quenching mesh frame 2 has an edge that connects to the quenching pool 1 and is fixedly connected by fixing screws. The quenching mesh frame 2 has a receiving cavity that extends into the quenching pool 1. The quenching mesh frame 2 is covered with mesh holes that penetrate through the inside and outside. In this embodiment, the mesh holes that penetrate through the inside and outside of the quenching mesh frame 2 allow the quenching liquid to enter the quenching mesh frame 2 to quench the bell-shaped shell. The screw connection facilitates the installation and removal of the quenching mesh frame 2 on the quenching pool 1.

[0027] Specifically, the inner wall of the quenching mesh frame 2 is provided with a plurality of longitudinal mounting grooves 7, the longitudinal mounting grooves 7 penetrate the top end of the quenching mesh frame 2 but not the bottom end, and the two ends of the placement rack 3 are provided with limiting parts 8 that extend into the longitudinal mounting grooves 7; in this embodiment, the placement rack 3 is fixed by placing the limiting parts 8 of the placement rack 3 into the longitudinal mounting grooves 7.

[0028] Specifically, the longitudinal mounting groove 7 corresponds to different heights of the limiting part 8 on different placement racks 3; in this embodiment, the longitudinal mounting groove 7 corresponds to different heights of each placement rack 3, thereby creating gap spaces between the bell-shaped shells on the multi-layer placement racks 3.

[0029] Specifically, the edge of the quenching mesh frame 2 is provided with lifting lugs 9; in this embodiment, the quenching mesh frame 2 and the entire workpiece can be placed and removed by lifting lugs 9 before and after quenching.

[0030] Specifically, the placement rack 4 includes two support plates 10, and the support plates 10 are provided with arc-shaped grooves 11 that are adapted to the bell-shaped shell; in this embodiment, the outer wall of the bell-shaped shell is supported and positioned by the arc-shaped grooves 11 on the two support plates 10.

[0031] Specifically, the arc-shaped groove 11 protrudes from the front and rear ends toward the middle, making its cross-section an arc-shaped structure, forming an arc 12 in the middle; in this embodiment, the arc 12 only contacts the outer wall of the bell-shaped shell at a point, and the contact area is negligible, so as to achieve sufficient quenching.

[0032] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0033] Working principle: During quenching, quenching liquid is introduced through inlet 5 and slowly discharged through outlet 6. While ensuring the quenching liquid in the quenching pool 1 fully submerges the bell-shaped shells within the quenching mesh frame 2, a slow circulation of the quenching liquid is formed. Multiple bell-shaped shells are placed on the placement rack 4 of the multi-layer placement rack 3. The outer walls of the bell-shaped shells are supported and positioned by the arc grooves 11 on the two support plates 10, while the arc 12 only makes point contact with the outer wall of the bell-shaped shell. Then, they are placed into the longitudinal mounting groove 7 through the limiting part 8 of the lower placement rack 3. The remaining placement racks 3 are then placed sequentially. Because the longitudinal mounting groove 7 corresponds to a different height for each placement rack 3, gaps are formed between the bell-shaped shells on the multi-layer placement rack 3. In the space, the quenching liquid enters the space between the multiple layers of placement racks 3 through the mesh of the quenching mesh frame 2, quenching the bell-shaped shells on the placement racks 3 and 4. This ensures that the bell-shaped shells do not contact each other, but only contact the arc 12 points, with negligible contact area, thus achieving thorough quenching. After quenching, the quenching mesh frame 2 and the entire workpiece can be removed through the lifting lug 9, and the quenching mesh frame 2, placement racks 3 and 4 can be cleaned before continuing the quenching of the next batch of workpieces. During this process, most of the debris generated during quenching will be blocked inside the quenching mesh frame 2 through the mesh and then carried out for cleaning. At the same time, after the liquid is drained from the outlet 6, the tiny debris entering the quenching pool 1 is filtered and then circulated, thus not affecting the quenching quality of the next batch.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-hardness bell-shaped shell quenching treatment device, comprising a quenching tank (1), characterized in that, The quenching pool (1) is a groove with an opening at the top, and a quenching mesh frame (2) is installed at the top of the quenching pool (1); the quenching mesh frame (2) is filled with multiple layers of placement racks (3), and multiple spaced placement racks (4) are installed on the placement racks (3).

2. The high-hardness bell-shaped shell quenching treatment device according to claim 1, characterized in that, The quenching pool (1) is provided with an inlet (5) and an outlet (6). The inlet (5) is located at the upper edge of the quenching pool (1), and the outlet (6) is installed at the bottom of the quenching pool (1). Both the inlet (5) and the outlet (6) are provided with control valves.

3. The high-hardness bell-shaped shell quenching treatment device according to claim 1, characterized in that, The quenching mesh frame (2) has an edge that connects to the quenching pool (1) and is fixedly connected by fixing screws. The quenching mesh frame (2) has a receiving cavity that extends into the quenching pool (1). The quenching mesh frame (2) is covered with mesh holes that penetrate through the inside and outside.

4. The high-hardness bell-shaped shell quenching treatment device according to claim 1, characterized in that, The inner wall of the quenching mesh frame (2) is provided with a plurality of longitudinal mounting grooves (7). The longitudinal mounting grooves (7) penetrate the top end of the quenching mesh frame (2) but not the bottom end. The two ends of the placement rack (3) are provided with limiting parts (8) that extend into the longitudinal mounting grooves (7).

5. The high-hardness bell-shaped shell quenching treatment device according to claim 4, characterized in that, The longitudinal mounting groove (7) corresponds to different heights of the limiting part (8) on different placement racks (3).

6. The high-hardness bell-shaped shell quenching treatment device according to claim 1, characterized in that, The edge of the quenching mesh frame (2) is provided with lifting lugs (9).

7. The high-hardness bell-shaped shell quenching treatment device according to claim 1, characterized in that, The placement rack (4) includes two support plates (10), and the support plates (10) are provided with arc-shaped grooves (11) adapted to the bell-shaped shell.

8. The high-hardness bell-shaped shell quenching treatment device according to claim 7, characterized in that, The arc-shaped groove (11) protrudes from the front and rear ends toward the middle. The cross-section of the arc-shaped groove (11) is an arc-shaped structure, and an arc (12) is formed in the middle.

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