Auxiliary cooling positioning device for induction heating of star wheel in transmission shaft

Abstract

The invention discloses a transmission shaft inner star wheel induction heating auxiliary cooling positioning device, and relates to the technical field of inner star wheel machining, the transmission shaft inner star wheel induction heating auxiliary cooling positioning device comprises an assembly frame, a coil is arranged on the assembly frame, an inner star wheel product is arranged in the coil, and a heating and quenching area is arranged between the outer surface of the inner star wheel product and the interior of the coil; the main body positioning tool is arranged on one side of the inner star wheel product in a butt joint mode, and a water inlet channel is formed in the center of the interior of the main body positioning tool. The transmission shaft inner star wheel induction heating auxiliary cooling positioning device is provided with a main body positioning tool, a water inlet channel is formed in the main body positioning tool, when an inner star wheel is subjected to induction heating machining, the main body positioning tool discharges water through the water inlet channel, meanwhile, mechanical energy hole blocking operation is conducted on an inner star wheel product through an upper center, and after an inner hole is cooled by cooling water, the inner star wheel is cooled. Water is discharged through the water outlet channel, the inner hole cannot be heated to deform completely, and the size precision of the product is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of inner star wheel processing, and in particular to an induction heating auxiliary cooling positioning device for an inner star wheel of a transmission shaft. Background Art

[0002] The inner star wheel is traditionally processed by carburizing alloy steel, which has a high material grade and high energy consumption. With the demand for environmental protection and energy conservation, induction heating is gradually being used instead. The effect can fully meet the requirements, but the difficulty lies in the design of the induction heating process, mainly the design of the auxiliary cooling and positioning device.

[0003] In order to overcome the above-mentioned defects, prior art 1 (publication number: CN115715038B, Chinese patent with publication date of 2023-10-31) is a cooling device for induction heating equipment, the device including a heat storage module, an air-cooled heat exchanger, a cooling fan matched with the air-cooled heat exchanger, a working fluid pump, a controller and a temperature sensor, the cooling working fluid outlet of the induction heating equipment, the heat storage module, the air-cooled heat exchanger, the working fluid pump, and the cooling working fluid inlet of the induction heating equipment are connected in sequence to form a working fluid loop, and a phase change energy storage material is provided in the heat storage module. The temperature sensor is used to measure the real-time surface temperature T1 of each power element in the induction heating equipment and the real-time working fluid temperature T2 at the outlet of the air-cooled heat exchanger. The controller is connected to the cooling fan, the working fluid pump and the temperature sensor, and the working fluid pump speed is adjusted according to T1 to control the working fluid flow rate of the working fluid loop, and the cooling fan speed is adjusted according to T2 to achieve dynamic matching of the heat exchange capacity of the cooling device and the heat load of the induction heating equipment, which is significantly improved in heat exchange performance compared with traditional cooling schemes.

[0004] There is also prior art 2 (publication number: CN110423871A, Chinese patent with publication date of 2019-11-08) a variable frequency induction heating and cooling device. The device includes a furnace body, a switchable variable frequency power supply, a furnace door, a gas valve, a thermocouple, a coil, an insulation box, a graphite electrode, an Al2O3 crucible, and a water-cooled chuck; the furnace body can provide a high vacuum or inert gas protection environment; the switchable variable frequency power supply is connected to the coil, and can provide industrial / medium / high frequency power supply and pulse power supply; the high frequency power supply makes the graphite electrode heat up, thereby heating the metal sample to melt, and then it can be switched to industrial / medium frequency or pulse power supply to perform electromagnetic treatment on the solidification process of the sample. In addition, at any time when the sample solidifies, the gas valve can be opened, and low-temperature inert gas can be quickly filled from the bottom of the furnace body to quench the sample, and metal samples with different growth forms at different cooling rates, different magnetic field conditions, and different times can be obtained. The invention can quickly melt metal and is used to study the solidification process of continuous casting billets and ingots.

[0005] Although existing technologies 1 and 2 can perform auxiliary cooling positioning, they only consider medium frequency positioning and do not design auxiliary cooling structures, resulting in large deformation of the inner hole. Some technical requirements with thin wall thickness and high deformation requirements cannot be met at all, which limits the space for design and development. In order to meet the design requirements, it is often necessary to increase the margin and increase the process for processing, which increases energy consumption and working hours. In order to ensure that the design requirements are met, some products can only integrate the cooling system on the induction coil, resulting in extremely complex induction coil structure, poor versatility, and waste of materials. A lot of waste is caused.

[0006] Therefore, we propose an induction heating auxiliary cooling positioning device for the star wheel in the transmission shaft to solve the above-mentioned problems. Summary of the invention

[0007] The purpose of the present invention is to provide an induction heating auxiliary cooling positioning device for the inner star wheel of the transmission shaft, so as to solve the problem that the conventional inner star wheel induction heating positioning device on the market currently has no integrated cooling system, and the technical requirements of thin wall thickness and high deformation requirements are difficult to meet, which limits the space for design and development. In order to meet the design requirements, it is often necessary to increase the margin and increase the process for processing, which increases the energy consumption and working hours.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an induction heating auxiliary cooling positioning device for an inner star wheel of a transmission shaft, comprising an assembly frame, a coil is arranged on the assembly frame, an inner star wheel product is arranged inside the coil, and a heating and quenching area is arranged between the outer surface of the inner star wheel product and the inside of the coil, The main body positioning tooling is docked and arranged on one side of the inner star wheel product, and a water inlet channel is opened at the inner center of the main body positioning tooling, and a water outlet channel is opened at the inner side of the main body positioning tooling, and an upper top is docked and arranged on the other side of the inner star wheel product; The splash guard is nested and connected to the outside of the main body positioning tooling, and a pushing mechanism that can drive the splash guard to move is arranged between the inside of the splash guard and the inside of the main body positioning tooling.

[0009] Preferably, four groups of water outlet channels are vertically opened about the center point of the main body positioning tooling, and the upper ends of the water outlet channels extend to the interior of the inner star wheel product, and the lower ends of the water outlet channels are away from the heating and quenching areas.

[0010] Preferably, the end of the upper tip is arranged in a truncated cone-shaped structure, and the end of the upper tip is sealed and butted against the interior of the inner star wheel product.

[0011] Preferably, a limiting groove is opened on the lower end side of the water inlet channel, and a limiting rod is nested inside the limiting groove, and a spring is fixedly connected between the inner end of the limiting rod and the inside of the limiting groove, and a clamping plate is fixedly connected to the outer end of the limiting rod.

[0012] Preferably, four groups of the clamping plates are arranged in a circular array about the center point of the water inlet channel, and the clamping plates are designed in an arc-shaped structure, and the outer diameter of the clamping plates is smaller than the maximum value of the inner diameter of the water inlet channel.

[0013] Preferably, the limiting rod forms a sliding structure through the clamping plate and the limiting groove, and the limiting rod forms an elastic structure through the spring and the limiting groove.

[0014] Preferably, the pushing mechanism includes a first airbag, which is fixedly connected to the outer side of the clamping plate, and the other side of the first airbag is fixedly connected to the inner wall of the water inlet channel, the inner end of the splash plate is fixedly connected to the second airbag, and one side of the second airbag is fixedly connected to the inside of the main positioning tooling, and a transmission tube is connected through the second airbag and the first airbag.

[0015] Preferably, the first airbag is connected to the second airbag via a transmission tube, and the splash guard forms a sliding structure with the main body positioning tooling through the second airbag.

[0016] Preferably, four groups of the first airbags and the second airbags are provided, the splash guards are provided in one-to-one correspondence with the water outlet channels, and the splash guards are located directly above the water outlet channels.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: the induction heating auxiliary cooling positioning device for the inner star wheel of the transmission shaft is provided with a main body positioning tooling, and a water inlet channel is provided inside the main body positioning tooling. When the inner star wheel is induction heated, the main body positioning tooling discharges water through the water inlet channel, and at the same time, the upper center is used to mechanically plug the hole of the inner star wheel product. After the cooling water cools the inner hole, the water is discharged through the water outlet channel, and the inner hole will not be deformed by heat at all, thereby ensuring the dimensional accuracy of the product. The specific contents are as follows (1) Relying only on the main positioning fixture and the upper center, the integrated cooling system is docked at the end of the main positioning fixture, and the upper center is used to mechanically plug the inner star wheel product, and the cooling water is used to cool the inner star wheel product. The overall structure is simple, the versatility is strong, the processing is convenient, and the cost is low; (2) The integrated cooling system fully meets the cooling requirements of the inner hole of the inner star wheel product. The inner hole of the processed product is completely free of deformation, which greatly increases the design space. No additional processing steps are required, thus achieving the smooth development of the process and the needs of energy saving and cost reduction. (3) The overall height of the main positioning tooling is increased, so that the cooling water outlet channel is far away from the heating area, which will not affect the heating area at all, further ensuring the quality of the processed parts; (4) When the pipeline of the integrated cooling system is connected to the end of the water inlet channel, the end of the pipeline will resist and squeeze the clamping plate, so that the clamping plate moves toward the inner wall of the water inlet channel. Driven by the elastic reaction force of the spring, the inner side of the clamping plate and the outer wall of the pipeline will be in close contact at the same time. While the clamping plate moves, it will synchronously drive the limit rod to slide inside the limit groove, thereby improving the stability of the clamping plate against the pipeline and ensuring the stability of cooling water transportation; (5) After the pipes are docked, the clamping plate moves closer to the inner wall of the water inlet channel. At this time, the clamping plate squeezes the first airbag, and the gas inside the first airbag is transported to the inside of the second airbag through the transmission pipe. At this time, the second airbag expands and simultaneously pushes the splash plate to move outward along the main positioning tooling. At this time, the splash plate can block the top of the water outlet channel, further preventing the cooling water from splashing into the heating area when it is discharged outward through the water outlet channel, thereby affecting the operation effect of the heating area. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the structure of the present invention in a bottom-up cross-sectional view; Figure 3 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 4 This is a schematic diagram of the three-dimensional structure of the main body positioning tooling of the present invention; Figure 5 It is a top three-dimensional schematic diagram of the structure of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the coil of the present invention; Figure 7 This is a schematic diagram of the three-dimensional bottom-up structure of the main body positioning tooling of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the clamping plate of the present invention; Fig. 9 It is a schematic diagram of a three-dimensional cross-sectional structure of the main body positioning tooling of the present invention.

[0019] In the figure: 1. Assembly frame; 2. Upper center; 3. Main body positioning tooling; 4. Water outlet channel; 5. Water inlet channel; 6. Inner star wheel product; 7. Coil; 8. Splash plate; 9. Clamping plate; 10. Limit rod; 11. Limit groove; 12. Spring; 13. Transmission pipe; 14. First airbag; 15. Second airbag. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Embodiment 1: Figure 1-Figure 6 The technical solution shown in the figure, the present invention provides the following technical solution: a device for induction heating auxiliary cooling positioning of the inner star wheel of the transmission shaft, which discloses a main body positioning tool 3 and an upper center 2, and uses cooling water to cool the inner star wheel product 6. The overall structure is simple, the versatility is strong, the processing is convenient, and the cost is low: An assembly rack 1, on which a coil 7 is arranged, and an inner star wheel product 6 is arranged inside the coil 7, and a heating and quenching area is arranged between the outer surface of the inner star wheel product 6 and the inside of the coil 7; The main body positioning tool 3 is docked with one side of the inner star wheel product 6, and a water inlet channel 5 is opened at the inner center of the main body positioning tool 3, and a water outlet channel 4 is opened at the inner side of the main body positioning tool 3, and an upper center 2 is docked with the other side of the inner star wheel product 6; Four groups of water outlet channels 4 are vertically opened about the center point of the main positioning tooling 3, and the upper end of the water outlet channel 4 extends to the interior of the inner star wheel product 6, and the lower end of the water outlet channel 4 is away from the heating and quenching area, the end of the upper top 2 is arranged in a truncated cone structure, and the end of the upper top 2 is sealed and connected to the interior of the inner star wheel product 6.

[0022] The main body positioning tool 3 is provided with a water inlet channel 5. During the induction heating processing of the inner star wheel, the main body positioning tool 3 discharges water through the water inlet channel 5, and at the same time, the upper center 2 is used to plug the hole of the inner star wheel product 6 mechanically. After the cooling water cools the inner hole, the water is discharged through the water outlet channel 4. The inner hole will not be deformed by heat at all, thereby ensuring the dimensional accuracy of the product. Only relying on the main body positioning tool 3 and the upper center 2, the integrated cooling system is docked at the end of the main body positioning tool 3, and the upper center 2 is used to plug the hole of the inner star wheel product 6 mechanically, and the cooling water is used to cool the inner star wheel product 6. The overall structure is simple, the versatility is strong, the processing is convenient, and the cost is low. The integrated cooling system fully meets the demand for cooling the inner hole of the inner star wheel product 6. The inner hole of the processed product is completely free of deformation, which greatly increases the design space. No additional process is required for processing, thereby realizing the smooth development of the process and the needs of energy saving and cost reduction. The overall height of the main body positioning tool 3 is increased, so that the water outlet channel 4 of the cooling water is far away from the heating area, which will not affect the heating area at all, further ensuring the quality of the processed parts.

[0023] Embodiment 2: Figure 2 , Figure 7 , Figure 8 and Fig. 9 The technical solution shown in the figure, the present invention provides the following technical solution: a device for induction heating auxiliary cooling and positioning of a star wheel in a transmission shaft, a clamping plate 9 is disclosed, and the stability of cooling water delivery can be ensured by the clamping plate 9: A limiting groove 11 is provided at the lower side of the water inlet channel 5, and a limiting rod 10 is nested inside the limiting groove 11, and a spring 12 is fixedly connected between the inner end of the limiting rod 10 and the inner part of the limiting groove 11, and a clamping plate 9 is fixedly connected to the outer end of the limiting rod 10; There are four groups of clamping plates 9 arranged in a circular array about the center point of the water inlet channel 5, and the clamping plates 9 are designed with an arc-shaped structure, and the outer diameter of the clamping plates 9 is smaller than the maximum value of the inner diameter of the water inlet channel 5. The limiting rod 10 forms a sliding structure through the clamping plate 9 and the limiting groove 11, and the limiting rod 10 forms an elastic structure with the limiting groove 11 through the spring 12.

[0024] When the pipeline of the integrated cooling system is connected to the end of the water inlet channel 5, the end of the pipeline will resist and squeeze the clamping plate 9, so that the clamping plate 9 moves toward the inner wall of the water inlet channel 5. Driven by the elastic reaction force of the spring 12, the inner side of the clamping plate 9 and the outer wall of the pipeline will be in close contact at the same time. While the clamping plate 9 moves, it will synchronously drive the limit rod 10 to slide inside the limit groove 11, thereby improving the stability of the clamping plate 9 against the pipeline and ensuring the stability of cooling water delivery.

[0025] Embodiment 3: Figure 3 , Figure 7 , Figure 8 and Fig. 9 The technical solution shown in the figure, the present invention provides the following technical solution: a device for induction heating auxiliary cooling positioning of a star wheel in a transmission shaft, a driving mechanism is disclosed, and the influence of cooling water on the heating area can be further reduced by the driving mechanism: The splash plate 8 is nested and connected to the outer side of the main body positioning tooling 3, and a pushing mechanism that can drive the splash plate 8 to move is arranged between the inner side of the splash plate 8 and the inside of the main body positioning tooling 3.

[0026] The pushing mechanism includes a first airbag 14, which is fixedly connected to the outer side of the clamping plate 9, and the other side of the first airbag 14 is fixedly connected to the inner wall of the water inlet channel 5, the inner end of the splash plate 8 is fixedly connected to the second airbag 15, and one side of the second airbag 15 is fixedly connected to the inside of the main body positioning tooling 3, and a transmission tube 13 is connected through the second airbag 15 and the first airbag 14, the first airbag 14 is connected to the second airbag 15 through the transmission tube 13, the splash plate 8 forms a sliding structure with the main body positioning tooling 3 through the second airbag 15, the first airbag 14 and the second airbag 15 are each provided with four groups, the splash plate 8 and the water outlet channel 4 are arranged one by one, and the splash plate 8 is located directly above the water outlet channel 4.

[0027] After the pipeline docking is completed, the clamping plate 9 approaches the inner wall of the water inlet channel 5. At this time, the clamping plate 9 will squeeze the first airbag 14, and the gas inside the first airbag 14 is transported to the inside of the second airbag 15 through the transmission pipe 13. At this time, the second airbag 15 expands and synchronously pushes the splash plate 8 to move outward along the main positioning tooling 3. At this time, the splash plate 8 can block the top of the water outlet channel 4, further preventing the cooling water from splashing into the heating area when it is discharged outward through the water outlet channel 4, thereby affecting the operation effect of the heating area.

[0028] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An induction heating auxiliary cooling positioning device for an inner star wheel of a transmission shaft, comprising an assembly frame (1), wherein a coil (7) is arranged on the assembly frame (1), an inner star wheel product (6) is arranged inside the coil (7), and a heating and quenching area is arranged between the outer surface of the inner star wheel product (6) and the inside of the coil (7); It is characterized in that The auxiliary cooling positioning device also includes: A main body positioning tool (3), the main body positioning tool (3) being docked and arranged on one side of the inner star wheel product (6), a water inlet channel (5) being opened at the inner center of the main body positioning tool (3), and a water outlet channel (4) being opened at the inner side of the main body positioning tool (3), and an upper center (2) being docked and arranged on the other side of the inner star wheel product (6); A splash plate (8) is nested and connected to the outside of the main body positioning tooling (3), and a pushing mechanism capable of driving the splash plate (8) to move is provided between the inside of the splash plate (8) and the inside of the main body positioning tooling (3).

2. The device for induction heating auxiliary cooling and positioning of a star wheel in a transmission shaft according to claim 1, characterized in that: Four groups of water outlet channels (4) are vertically opened about the center point of the main body positioning tooling (3), and the upper ends of the water outlet channels (4) extend to the interior of the inner star wheel product (6), and the lower ends of the water outlet channels (4) are away from the heating and quenching areas.

3. The device for induction heating auxiliary cooling and positioning of a star wheel in a transmission shaft according to claim 1, characterized in that: The end of the upper tip (2) is arranged in a truncated cone-shaped structure, and the end of the upper tip (2) is sealedly butted against the interior of the inner star wheel product (6).

4. The device for induction heating auxiliary cooling and positioning of a star wheel in a transmission shaft according to claim 1, characterized in that: A limiting groove (11) is provided on the lower side of the water inlet channel (5), and a limiting rod (10) is nested inside the limiting groove (11), and a spring (12) is fixedly connected between the inner end of the limiting rod (10) and the inside of the limiting groove (11), and a clamping plate (9) is fixedly connected to the outer end of the limiting rod (10).

5. The device for induction heating auxiliary cooling and positioning of a star wheel in a transmission shaft according to claim 4, characterized in that: The clamping plates (9) are arranged in four groups in a circular array about the center point of the water inlet channel (5), and the clamping plates (9) are designed to be arc-shaped structures, and the outer diameter of the clamping plates (9) is smaller than the maximum value of the inner diameter of the water inlet channel (5).

6. The device for induction heating auxiliary cooling and positioning of a star wheel in a transmission shaft according to claim 4, characterized in that: The limiting rod (10) forms a sliding structure through the clamping plate (9) and the limiting groove (11), and the limiting rod (10) forms an elastic structure through the spring (12) and the limiting groove (11).

7. The device for induction heating auxiliary cooling and positioning of a star wheel in a transmission shaft according to claim 1, characterized in that: The pushing mechanism comprises a first airbag (14), the first airbag (14) is fixedly connected to the outside of the clamping plate (9), and the other side of the first airbag (14) is fixedly connected to the inner wall of the water inlet channel (5), the inner end of the splash plate (8) is fixedly connected to the second airbag (15), and one side of the second airbag (15) is fixedly connected to the inside of the main body positioning tool (3), and a transmission pipe (13) is connected between the second airbag (15) and the first airbag (14).

8. The device for induction heating auxiliary cooling and positioning of a star wheel in a transmission shaft according to claim 7, characterized in that: The first airbag (14) is connected to the second airbag (15) via the transmission tube (13), and the splash plate (8) forms a sliding structure with the main body positioning tool (3) via the second airbag (15).

9. The device for induction heating auxiliary cooling and positioning of a star wheel in a transmission shaft according to claim 7, characterized in that: Four groups of the first airbags (14) and the second airbags (15) are provided, the splash plates (8) and the water outlet channels (4) are provided in one-to-one correspondence, and the splash plates (8) are located directly above the water outlet channels (4).

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