A heat treatment device for bearing steel ball production

Abstract

The utility model discloses a heat treatment device for bearing steel ball production belongs to bearing steel ball processing equipment technical field, including base, the base is fixedly connected with quenching pool and mounting bracket on, the mounting bracket is liftably connected with annular frame on, the inboard of annular frame is rotatably connected with quenching frame, the top of quenching frame is provided with inlet, the frame wall of quenching frame is the porous structure, and the aperture is less than the diameter of the steel ball to be quenched, the inside coaxial fixed connection of quenching frame has helical blade, and the helical blade and quenching frame inner wall enclose helical channel, in the utility model, drive motor drives quenching frame rotation, promotes the quick convection exchange of quenching liquid in and out of quenching frame, obtains better quenching cooling effect, when the helical blade is opposite low -speed rotation with quenching frame, and the steel ball is formed upward movement tendency of lifting, can effectively disperse the extrusion stress of steel ball accumulation, avoids the surface deformation or knock damage of steel ball because of mutual extrusion.

Description

Technical Field

[0001] This utility model belongs to the technical field of bearing steel ball processing equipment, and in particular relates to a heat treatment device for the production of bearing steel balls. Background Technology

[0002] In the production and processing of bearing steel balls, the quenching process in the heat treatment stage is a key step that determines the core performance of the steel balls. As the core rolling element of the bearing, the surface hardness, wear resistance, and dimensional stability of the steel balls directly determine the bearing's load-bearing capacity, service life, and operational accuracy. The quenching process, through precise control of the heating and cooling process, induces a transformation in the internal structure of the steel balls, thereby endowing them with excellent mechanical properties that meet the requirements of the operating conditions. The quenching of bearing steel balls requires first heating the steel balls to a specified temperature, and then rapidly immersing them in a quenching liquid to complete the cooling process. This structural transformation enhances the performance to meet actual application requirements.

[0003] In the existing technology, a drive component is used to drive the operation of the mesh frame. The mesh frame is equipped with layered conveyor components and gates to realize the automatic lifting and quenching of steel balls. It can also arrange the steel balls in layers to reduce accumulation. In this method, the steel balls are prone to static accumulation in the frame, resulting in uneven quenching and quality defects. In addition, the lack of a directional flow structure causes low material discharge efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a heat treatment device for the production of bearing steel balls, in order to solve the problem in traditional technology where steel balls tend to accumulate statically in the frame, leading to uneven quenching and quality defects.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A heat treatment apparatus for the production of bearing steel balls includes a base, on which a quenching tank and a mounting frame are fixedly connected, and a ring frame is movably connected to the mounting frame. A quenching frame is rotatably connected to the inner side of the ring frame. A feed port is provided at the top of the quenching frame. The frame wall of the quenching frame has a porous structure, and the diameter of the holes is smaller than the diameter of the steel ball to be quenched. A spiral blade is coaxially fixed inside the quenching frame, and the spiral blade and the inner wall of the quenching frame form a spiral channel. A discharge port is opened at the bottom of the quenching frame. The input end of the spiral channel is connected to the feed port, and its output end is connected to the discharge port. A valve assembly is installed at the discharge port to control the opening and closing of the discharge port.

[0006] Preferably, the mounting frame is equipped with multiple telescopic cylinders, and the output ends of the multiple telescopic cylinders are fixedly connected to the same annular frame, which is located above the quenching tank.

[0007] Preferably, the quenching pool is filled with quenching liquid, and the quenching frame is used to support the steel ball to be quenched, and when it moves to the lower limit position, it is spaced apart from the inner wall of the quenching pool.

[0008] Preferably, a motor base is fixedly connected to the annular frame, a drive motor is mounted on the motor base, a drive gear is coaxially fixedly connected to the output end of the drive motor, a quenching frame is coaxially rotatably connected to the inner side of the annular frame, an external gear ring is coaxially fixedly connected to the outer side of the quenching frame, and the drive gear and the external gear ring mesh with each other.

[0009] Preferably, when the quenching frame is immersed in the quenching pool, it drives the spiral blades to rotate in the opposite direction under the drive of the drive motor, and the spiral blades lift the steel ball to form an upward movement trend.

[0010] Preferably, a sliding groove is provided inside the wall of the quenching frame, the bottom of the sliding groove is connected to the discharge port, a valve plate is slidably connected inside the sliding groove, and an operating frame is fixedly connected to the top of the valve plate. The operating frame is in the shape of an inverted U and its bottom penetrates through the wall of the quenching frame.

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. In this utility model, the quenching frame is rotated by a drive motor, which promotes rapid convection and exchange of quenching fluid inside and outside the quenching frame, resulting in a better quenching and cooling effect. When the spiral blades rotate at low speed in the opposite direction with the quenching frame, they lift the steel balls and form an upward movement trend, which can effectively disperse the compressive stress generated by the accumulation of steel balls and avoid surface deformation or collision damage caused by mutual compression of the steel balls. At the same time, the steel balls slowly tumble in the spiral channel, and combined with the porous structure of the quenching frame, the quenching fluid can be fully circulated, ensuring uniform cooling of all parts of the steel balls, improving the quenching effect of the steel balls, and meeting the stringent requirements of bearing steel balls for surface quality and mechanical properties.

[0012] 2. In this utility model, the spiral channel formed by the spiral blade and the inner wall of the quenching frame can provide a directional flow path for the steel balls. During discharge, the steel balls can slide orderly along the spiral channel to the discharge port by gravity, avoiding the accumulation and blockage of steel balls. There is no need to set up additional discharge components, and the discharge is smoother and more efficient, which is suitable for the continuous operation requirements of batch production. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of a heat treatment device for the production of bearing steel balls proposed in this utility model. Figure 2 This is a vertical sectional view of the quenching pool, annular frame, and quenching frame of a heat treatment device for the production of bearing steel balls proposed in this utility model; Figure 3 for Figure 2 Enlarged diagram of part A in the middle.

[0014] In the diagram: 1. Base; 2. Quenching pool; 3. Mounting frame; 4. Telescopic cylinder; 5. Ring frame; 6. Motor base; 7. Drive motor; 8. Drive gear; 9. Quenching frame; 10. External gear ring; 11. Spiral blade; 12. Spiral channel; 13. Discharge port; 14. Sliding groove; 15. Valve plate; 16. Operating frame. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] Reference Figures 1-3 A heat treatment apparatus for the production of bearing steel balls includes a base 1, a quenching pool 2 and a mounting frame 3 fixedly connected to the base 1, and a ring frame 5 that is vertically connected to the mounting frame 3.

[0017] The quenching tank 2 is filled with quenching liquid, which is suitable for the heat treatment process of bearing steel balls.

[0018] Multiple telescopic cylinders 4 are mounted on the mounting frame 3. The output ends of the multiple telescopic cylinders 4 are fixedly connected to the same annular frame 5, which is located above the quenching pool 2.

[0019] Four telescopic cylinders 4 are preferred and are evenly distributed around the periphery of the quenching pool 2 to ensure that the ring frame 5 is subjected to balanced force and runs smoothly during the lifting and lowering process. When the telescopic cylinder 4 is working, its output end can drive the ring frame 5 to completely immerse the quenching frame 9 in the quenching liquid or rise to detach it from the quenching liquid.

[0020] A quenching frame 9 is rotatably connected to the inner side of the ring frame 5. A motor base 6 is fixedly connected to the ring frame 5. A drive motor 7 is installed on the motor base 6. A drive gear 8 is coaxially fixedly connected to the output end of the drive motor 7. The quenching frame 9 is coaxially rotatably connected to the inner side of the ring frame 5. An external gear ring 10 is coaxially fixedly connected to the outer side of the quenching frame 9. The drive gear 8 and the external gear ring 10 mesh with each other.

[0021] When the drive motor 7 is working, its output end drives the quenching frame 9 to rotate through the drive gear 8 and the external gear ring 10, which in turn drives the steel balls accumulated inside to rotate in the quenching liquid, thereby improving the uniformity of quenching.

[0022] The top of the quenching frame 9 has a feed port, and the frame wall of the quenching frame 9 has a porous structure with a hole diameter smaller than the diameter of the steel ball to be quenched.

[0023] When the quenching frame 9 is placed in the quenching liquid, the quenching liquid freely enters the interior of the quenching frame 9 through the porous structure, achieving full contact between the steel ball and the quenching liquid.

[0024] The quenching frame 9 is used to support the steel ball to be quenched. When it moves to the lower limit position, it is spaced apart from the inner wall of the quenching pool 2 to ensure that the quenching liquid flows freely around the quenching frame 9.

[0025] The level of the quenching fluid must be higher than the plane of the highest bearing steel ball in the quenching frame 9 to ensure that the steel ball is completely submerged in the quenching process.

[0026] A spiral blade 11 is coaxially fixed inside the quenching frame 9. The spiral blade 11 and the inner wall of the quenching frame 9 form a spiral channel 12. A discharge port 13 is opened at the bottom of the quenching frame 9. The input end of the spiral channel 12 is connected to the feed port, and its output end is connected to the discharge port 13. A valve assembly is installed at the discharge port 13 to control the opening and closing of the discharge port 13.

[0027] When the quenching frame 9 is immersed in the quenching pool 2, it drives the spiral blade 11 to rotate in the opposite direction under the drive of the drive motor 7, and the spiral blade 11 lifts the steel ball to form an upward movement trend.

[0028] Here, "reverse rotation" refers to rotation opposite to the conventional feeding direction of the spiral channel 12. Combined with low-speed operation, this causes the spiral blades 11 to generate a continuous upward lifting force on the steel balls, dispersing the compressive stress caused by the accumulation of steel balls and preventing the steel balls from being deformed or damaged by impact due to compression. At the same time, it ensures that the steel balls slowly tumble within the spiral channel 12, further improving the uniformity of quenching.

[0029] A sliding groove 14 is provided inside the frame wall of the quenching frame 9. The bottom of the sliding groove 14 is connected to the discharge port 13. A valve plate 15 is slidably connected inside the sliding groove 14. An operating frame 16 is fixedly connected to the top of the valve plate 15. The operating frame 16 is in the shape of an inverted U and its bottom penetrates through the frame wall of the quenching frame 9.

[0030] After the quenching frame 9 rises and detaches from the quenching liquid, the operating frame 16 is controlled by external mechanical equipment to realize the automatic lifting and lowering of the valve plate 15 and control the opening and closing of the discharge port 13. There is no need for manual direct contact with the high-temperature components, which makes it easy to discharge the quenched steel balls through the discharge port 13 into the structure connected to the discharge port 13.

[0031] During quenching, the telescopic cylinder 4 works, and its output end extends to drive the ring frame 5 to raise the quenching frame 9 to the feeding position. The external equipment pulls the operating frame 16 to close the valve plate 15 and starts the external feeding equipment to put the steel balls to be quenched into the top feeding port of the quenching frame 9. The steel balls are evenly distributed along the spiral channel 12.

[0032] The output end of the telescopic cylinder 4 retracts, and the quenching frame 9 is lowered to the lower limit position of the quenching pool 2 via the ring frame 5, so that the steel ball is completely immersed in the quenching liquid.

[0033] When the drive motor 7 starts, its output end drives the quenching frame 9 to rotate through the drive gear 8 and the external gear ring 10, causing the spiral blade 11 to rotate in the opposite direction at a low speed. During the rotation, the spiral blade 11 lifts the steel ball to form an upward movement tendency, reducing the squeezing force between the steel balls and assisting the steel balls to flip, thus ensuring uniform quenching.

[0034] After quenching, the output end of the telescopic cylinder 4 extends, driving the quenching frame 9 to the discharge position. The operating frame 16 is pulled by external equipment to open the valve plate 15, and the steel ball is discharged from the discharge port 13 along the spiral channel 12 under the action of gravity.

[0035] Furthermore, the quenching frame 9 and the spiral blade 11 can be controlled to stop rotating or rotate in the forward direction, thereby accelerating the discharge rate of the steel balls.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A heat treatment apparatus for producing bearing steel balls, comprising a base (1), characterized in that, The base (1) is fixedly connected to a quenching pool (2) and a mounting frame (3), and the mounting frame (3) is connected to a ring frame (5) in a lifting manner. The inner side of the ring frame (5) is rotatably connected to a quenching frame (9). The top of the quenching frame (9) is provided with a feed port. The frame wall of the quenching frame (9) has a porous structure, and its hole diameter is smaller than the diameter of the steel ball to be quenched. The quenching frame (9) is coaxially fixedly connected to a spiral blade (11). The spiral blade (11) and the inner wall of the quenching frame (9) form a spiral channel (12). The bottom of the quenching frame (9) is provided with a discharge port (13). The input end of the spiral channel (12) is connected to the feed port, and its output end is connected to the discharge port (13). A valve assembly is installed at the discharge port (13) to control the opening and closing of the discharge port (13).

2. The heat treatment apparatus for producing bearing steel balls according to claim 1, characterized in that, Multiple telescopic cylinders (4) are installed on the mounting frame (3), and the output ends of the multiple telescopic cylinders (4) are fixedly connected to the same annular frame (5), which is located above the quenching pool (2).

3. The heat treatment apparatus for producing bearing steel balls according to claim 1, characterized in that, The quenching pool (2) is filled with quenching liquid. The quenching frame (9) is used to carry the steel ball to be quenched. When it moves to the lower limit position, it is spaced apart from the inner wall of the quenching pool (2).

4. The heat treatment apparatus for producing bearing steel balls according to claim 1, characterized in that, A motor base (6) is fixedly connected to the ring frame (5), a drive motor (7) is installed on the motor base (6), a drive gear (8) is fixedly connected to the output end of the drive motor (7) on the same axis, a quenching frame (9) is rotatably connected to the inner side of the ring frame (5), and an external gear ring (10) is fixedly connected to the outer side of the quenching frame (9) on the same axis. The drive gear (8) and the external gear ring (10) mesh with each other.

5. A heat treatment apparatus for producing bearing steel balls according to claim 4, characterized in that, When the quenching frame (9) is immersed in the quenching pool (2), it drives the spiral blade (11) to rotate in the opposite direction under the drive of the drive motor (7), and the spiral blade (11) lifts the steel ball to form an upward movement trend.

6. A heat treatment apparatus for producing bearing steel balls according to claim 1, characterized in that, The quenching frame (9) has a sliding groove (14) inside its frame wall. The bottom of the sliding groove (14) is connected to the discharge port (13). A valve plate (15) is slidably connected inside the sliding groove (14). An operating frame (16) is fixedly connected to the top of the valve plate (15). The operating frame (16) is an inverted U-shape, and its bottom penetrates the frame wall of the quenching frame (9).

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