An aerofoil bearing block quenching inductor

Abstract

The utility model relates to quenching inductor technical field, and disclose a kind of wing type bearing pedestal quenching inductor, including with the base fixed connection of machine tool, the two sides of the base far from machine tool one end are respectively welded and installed with first busbar unit and second busbar unit, the first busbar unit far from the base one end welding installation has heating wire unit.The wing type bearing pedestal quenching inductor, heating wire unit uses three inside and outside diameter same, center line collinear arc portion heating wire, match bending forming vertical portion heating wire, can overall cover the quenching area of part cylindrical surface and bottom surface and vertical end surface, avoid the problem that traditional ring inductor local heating is too strong or insufficient, ensure that hardening layer distribution is uniform, quenching organization is stable, cooling system covers base, busbar unit and heating wire unit through intercommunication flow passage, can quickly take away the heat generated by high-frequency heating, avoid inductor due to local overheating deformation, prolong service life.

Description

Technical Field

[0001] This utility model relates to the field of quenching inductor technology, specifically a quenching inductor for an airfoil bearing housing. Background Technology

[0002] A universal joint, also known as a universal connector, is a mechanical component that enables variable-angle power transmission. It is used in locations where the direction of the drive shaft needs to be changed, and it is the "joint" component of the universal joint transmission device in a car's drive system. The combination of a universal joint and a drive shaft is called a universal joint transmission device. In front-engine, rear-wheel-drive vehicles, the universal joint transmission device is installed between the transmission output shaft and the drive axle final drive input shaft; while in front-engine, front-wheel-drive vehicles, the drive shaft is omitted, and the universal joint is installed between the front axle half-shaft, which is responsible for both driving and steering, and the wheels.

[0003] A cross-type rigid universal joint consists of a universal joint fork, a cross shaft, needle roller bearings, oil seals, a sleeve, and bearing caps. Its working principle is as follows: rotating one of the forks drives the other fork to rotate via the cross shaft, while simultaneously allowing it to oscillate in any direction around the center of the cross shaft. During rotation, the needle rollers in the needle roller bearings rotate on their own to reduce friction. The shaft connected to the input power is called the input shaft (also known as the driving shaft), and the shaft outputting power through the universal joint is called the output shaft (also known as the driven shaft). When operating at an angle between the input and output shafts, their angular velocities are unequal, which can cause torsional vibrations in the output shaft and its connected transmission components, affecting the lifespan of these components.

[0004] Therefore, airfoil bearing housings should possess high hardness, strength, wear resistance, and a long service life, necessitating quenching. Induction hardening achieves high hardness, high strength, and a long service life while minimizing the core hardness, thus providing good toughness. Therefore, induction hardening is the preferred method. However, using a circular induction heater typically results in uneven heating and significant variations in the hardened layer distribution, affecting performance and leading to defective products. Furthermore, because the heating area is the bottom and circumference, the quenching time is relatively long. To ensure the part meets process requirements and improve production efficiency, this type of induction heater was designed. Summary of the Invention

[0005] In view of the shortcomings of the prior art, this utility model provides a quenching inductor for airfoil bearing housing to solve the problems mentioned in the background.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a quenching inductor for an airfoil bearing housing, comprising a base fixedly connected to a machine tool, wherein a first busbar unit and a second busbar unit are respectively welded and installed on both sides of the base away from the machine tool, and a heating wire unit is welded and installed on the end of the first busbar unit away from the base. The base includes a right support seat and a left support seat, and an insulating spacer is provided between the right support seat and the left support seat; The first busbar unit includes a horizontal conductor section and a vertical conductor section, which are welded together. Both the horizontal and vertical conductor sections are welded to the base. An oblique conductor section is welded to the end of the horizontal conductor section away from the vertical conductor section, and a busbar connector is provided at the end of the oblique conductor section away from the horizontal conductor section.

[0007] Preferably, the first bus conductor unit and the second bus conductor unit have the same structure. The first bus conductor unit and the second bus conductor unit are symmetrically distributed on both sides of the base. The angle between the oblique conductor part and the horizontal conductor part is 30°, and the angle between the horizontal conductor part and the vertical conductor part is 90°.

[0008] The above technical solution enables the two sets of busbar units to form a symmetrical and regular current conduction path. The 30° angled oblique conductor section can adapt to the contour curvature of the airfoil bearing seat, avoiding interference between the conductor and the parts. The 90° angled horizontal and vertical conductor sections can accurately connect the base and the heating conductor unit, ensuring a short and smooth current conduction path and reducing current loss.

[0009] Preferably, the base is provided with an interconnected flow channel between the first busbar unit, the heating wire unit, and the second busbar unit.

[0010] The above technical solution can construct a complete cooling circuit that runs through the base, the busbar unit, and the heating wire unit. The cooling water can fully cover all the heat-generating components along the flow channel, quickly remove the heat generated by high-frequency heating, prevent the inductor from deforming or being damaged due to local overheating, maintain the temperature of each component, ensure uniform heating power output, and further improve the consistency of quenching quality.

[0011] Preferably, the right support and the left support have the same specifications, and the right support and the left support are symmetrically distributed on both sides of the insulating spacer.

[0012] Through the above technical solution, the insulating spacer can effectively block the current conduction between the right support and the left support, avoiding short circuit faults in the base. The two support seats with the same specifications and symmetrical distribution can make the base bear the force evenly, and fit more tightly when connected to the machine tool, preventing the inductor from shifting due to vibration during the quenching process, and ensuring the accurate relative position of the heating wire unit and the quenching area of ​​the part.

[0013] Preferably, the heating wire unit includes a first arc-shaped heating wire, a second arc-shaped heating wire, and a third arc-shaped heating wire. The first arc-shaped heating wire is welded to the second busbar unit, and the third arc-shaped heating wire is welded to the first busbar unit. The second and third arc-shaped heating wires are bent to form vertical heating wires.

[0014] Through the above technical solution, the first arc-shaped heating wire, the second arc-shaped heating wire, and the third arc-shaped heating wire can respectively correspond to the cylindrical surface quenching area at different positions of the airfoil bearing seat. The vertical heating wire can adapt to the quenching requirements of the bottom surface or vertical end face of the part, realizing full coverage of all areas of the part to be quenched. The welding connection between each wire and the busbar unit can ensure uninterrupted current transmission, providing reliable structural and circuit support for synchronous heating in multiple areas.

[0015] Preferably, the first, second, and third arc-shaped heating wires are arc-shaped structures, and their inner and outer diameters are the same. The center lines of the first, second, and third arc-shaped heating wires are located on the same vertical line, and the first, second, and third arc-shaped heating wires are connected in series using an integral circular copper tube.

[0016] Through the above technical solutions, the arc-shaped heating wires with the same inner and outer diameters can ensure that the magnetic field strength of each heating area is consistent, avoiding local overheating or underheating due to differences in wire specifications. The design of the center line being collinear can make the heating area precisely aligned along the vertical direction of the part, preventing heating offset. The integrated circular copper tube series structure reduces the number of wire connection nodes, lowers the contact resistance, and avoids overheating at the nodes, which affects the heating uniformity.

[0017] Compared with the prior art, this utility model provides a quenching inductor for airfoil bearing housings, which has the following advantages: 1. This airfoil bearing housing quenching inductor uses three arc-shaped heating wires with the same inner and outer diameters and collinear centerlines in its heating wire unit, combined with a bent vertical heating wire. This can fully cover the quenching areas of the cylindrical surface, bottom surface, and vertical end face of the part, avoiding the problem of excessive or insufficient local heating in traditional ring inductors. This ensures uniform distribution of the hardened layer and stable quenching structure. The oblique wire section and the transverse wire section of the first busbar unit form a 30° angle, which can adapt to the curvature of the bearing housing contour and avoid interference between the wire and the part. Furthermore, the symmetrically distributed busbar units can reduce current loss and ensure efficient transmission of heating power, fundamentally reducing the defect rate and meeting the part's requirements for high hardness and high wear resistance. 2. The airfoil bearing housing quenching inductor has an insulating partition on the base that blocks the current flow between the right and left support seats, effectively preventing short circuits. The symmetrical and uniformly sized support seats can balance the force and prevent the inductor from shifting due to vibration during the quenching process after being fixed to the machine tool, ensuring accurate heating position. The cooling system covers the base, the busbar unit, and the heating wire unit through interconnected flow channels, which can quickly remove the heat generated by high-frequency heating, prevent the inductor from deforming due to local overheating, and extend its service life. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the installation structure of the heating wire unit of this utility model; Figure 4 This is a side view of the present invention.

[0019] The components are: 1. Base; 101. Right support; 102. Left support; 2. Insulating partition; 3. First busbar unit; 301. Horizontal conductor section; 302. Diagonal conductor section; 303. Busbar connector; 304. Vertical conductor section; 4. Heating conductor unit; 401. First arc section heating conductor; 402. Vertical section heating conductor; 403. Second arc section heating conductor; 404. Third arc section heating conductor; 5. Second busbar unit. Detailed Implementation

[0020] 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.

[0021] Example 1: like Figure 1-4 As shown, the present invention provides a quenching inductor for an airfoil bearing housing, including a base 1 fixedly connected to a machine tool. A first busbar unit 3 and a second busbar unit 5 are respectively welded and installed on both sides of the base 1 away from the machine tool. A heating wire unit 4 is welded and installed on the end of the first busbar unit 3 away from the base 1. The base 1 includes a right support 101 and a left support 102, and an insulating spacer 2 is provided between the right support 101 and the left support 102. The first busbar unit 3 includes a horizontal conductor section 301 and a vertical conductor section 304. The horizontal conductor section 301 and the vertical conductor section 304 are welded together. The horizontal conductor section 301 and the vertical conductor section 304 are welded together with the base 1. An oblique conductor section 302 is welded to the end of the horizontal conductor section 301 away from the vertical conductor section 304. A busbar connector 303 is provided at the end of the oblique conductor section 302 away from the horizontal conductor section 301.

[0022] Example 2: like Figure 2-4 As shown, this is an improvement on the previous embodiment.

[0023] Specifically, the first busbar unit 3 and the second busbar unit 5 have the same structure. The first busbar unit 3 and the second busbar unit 5 are symmetrically distributed on both sides of the base 1. The angle between the oblique conductor portion 302 and the horizontal conductor portion 301 is 30°, and the angle between the horizontal conductor portion 301 and the vertical conductor portion 304 is 90°. The advantage is that the two sets of busbar units can form a symmetrical and regular current conduction path. The 30° angled oblique conductor portion 302 can adapt to the contour curvature of the airfoil bearing seat, avoiding interference between the conductor and the parts. The 90° angled horizontal and vertical conductor portions 304 can accurately connect the base 1 and the heating conductor unit 4, ensuring a short and smooth current conduction path and reducing current loss.

[0024] Example 3: like Figure 2-4 As shown, this is an improvement on the previous embodiment.

[0025] Specifically, an interconnected flow channel is provided between the base 1 and the first busbar unit 3, the heating wire unit 4, and the second busbar unit 5. The advantage is that it constructs a complete cooling circuit that runs through the base 1, the busbar units, and the heating wire unit 4. Cooling water can fully cover all heating components along the flow channel, quickly removing the heat generated by high-frequency heating, preventing deformation or damage to the inductor due to localized overheating, while maintaining stable temperatures for all components, ensuring uniform heating power output, and further improving the consistency of quenching quality.

[0026] Specifically, the right support 101 and the left support 102 have the same specifications and are symmetrically distributed on both sides of the insulating partition 2. The advantage is that the insulating partition 2 can effectively block the current flow between the right support 101 and the left support 102, preventing short circuits in the base 1. The two supports, being of the same specifications and symmetrically distributed, ensure balanced force on the base 1, resulting in a tighter fit when connected to the machine tool. This prevents the inductor from shifting due to vibration during quenching and ensures accurate relative positioning between the heating wire unit 4 and the quenching area of ​​the part.

[0027] Example 4: like Figure 2-4 As shown, this is an improvement on the previous embodiment.

[0028] Specifically, the heating wire unit 4 includes a first arc-shaped heating wire 401, a second arc-shaped heating wire 403, and a third arc-shaped heating wire 404. The first arc-shaped heating wire 401 is welded to the second busbar unit 5, and the third arc-shaped heating wire 404 is welded to the first busbar unit 3. The second arc-shaped heating wire 403 and the third arc-shaped heating wire 404 are bent to form a vertical heating wire 402. The advantages are that the first arc-shaped heating wire 401, the second arc-shaped heating wire 403, and the third arc-shaped heating wire 404 can respectively correspond to the cylindrical surface quenching areas at different positions of the airfoil bearing seat. The vertical heating wire 402 can adapt to the quenching requirements of the bottom surface or vertical end face of the part, achieving comprehensive coverage of all areas to be quenched. The welding connection between each wire and the busbar unit ensures uninterrupted current transmission, providing reliable structural and circuit support for simultaneous heating in multiple areas.

[0029] Specifically, the first arc-shaped heating wire 401, the second arc-shaped heating wire 403, and the third arc-shaped heating wire 404 have arc-shaped structures, and their inner and outer diameters are the same. The centerlines of the first arc-shaped heating wire 401, the second arc-shaped heating wire 403, and the third arc-shaped heating wire 404 are located on the same vertical line. The first arc-shaped heating wire 401, the vertical heating wire 402, the second arc-shaped heating wire 403, and the third arc-shaped heating wire 404 are connected in series using an integrated circular copper tube. The advantages are that the arc-shaped heating wires with the same inner and outer diameters ensure consistent magnetic field strength in each heating area, avoiding localized overheating or underheating due to differences in wire specifications. The collinear centerline design allows for precise alignment of the heating areas along the vertical direction of the part, preventing heating misalignment. The integrated circular copper tube series structure reduces the number of wire connection nodes, lowers contact resistance, and prevents overheating at the nodes from affecting heating uniformity.

[0030] Working principle: In use, the right support 101 and left support 102 of the base 1 are first fixed to the machine tool. The insulating spacer 2 can block the current between the two supports to avoid short circuit, and at the same time ensure that the base 1 is evenly stressed and prevents vibration and displacement. Then, the cooling system is started. Cooling water circulates along the flow channel that connects the base 1 with the first busbar unit 3, the second busbar unit 5, and the heating wire unit 4, covering each heat-generating component to pre-cool and prevent overheating and deformation. Then, the high-frequency power supply is connected to the busbar connector 303 of the first busbar unit 3. The high-frequency current is transmitted to the heating wire through the oblique conductor 302, the horizontal conductor 301, and the vertical conductor 304. Unit 4, and then the current flows back through the symmetrical second bus conductor unit 5 to form a low-loss current loop. When the current flows through the heating conductor unit 4, the first arc heating conductor 401, the second arc heating conductor 403, and the third arc heating conductor 404, which have the same inner and outer diameters and collinear center lines, synchronously and uniformly heat the cylindrical surface of the bearing seat. The bent vertical heating conductor 402 covers the bottom surface or the vertical end face, realizing the full quenching area adaptive heating. After the preset quenching parameters are reached, the high-frequency power supply is first cut off, and the part continues to cool for a period of time to ensure the uniformity of the quenched structure and reduce residual stress. Finally, the cooling system is turned off and the part is removed to complete the quenching operation.

[0031] 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 quenching inductor for an airfoil bearing housing, characterized in that: Includes a base (1) fixedly connected to the machine tool, wherein a first busbar unit (3) and a second busbar unit (5) are welded and installed on both sides of the base (1) away from the machine tool, and a heating wire unit (4) is welded and installed on the end of the first busbar unit (3) away from the base (1). The base (1) includes a right support (101) and a left support (102), and an insulating partition (2) is provided between the right support (101) and the left support (102). The first busbar unit (3) includes a horizontal conductor section (301) and a vertical conductor section (304). The horizontal conductor section (301) and the vertical conductor section (304) are welded together. The horizontal conductor section (301) and the vertical conductor section (304) are welded together with the base (1). An oblique conductor section (302) is welded to the end of the horizontal conductor section (301) away from the vertical conductor section (304). A busbar connector (303) is provided at the end of the oblique conductor section (302) away from the horizontal conductor section (301).

2. The airfoil bearing housing quenching inductor according to claim 1, characterized in that: The first busbar unit (3) and the second busbar unit (5) have the same structure. The first busbar unit (3) and the second busbar unit (5) are symmetrically distributed on both sides of the base (1). The angle between the oblique conductor part (302) and the horizontal conductor part (301) is 30°, and the angle between the horizontal conductor part (301) and the vertical conductor part (304) is 90°.

3. The airfoil bearing housing quenching inductor according to claim 1, characterized in that: The base (1) is provided with an interconnected flow channel with the first busbar unit (3), the heating wire unit (4), and the second busbar unit (5).

4. The airfoil bearing housing quenching inductor according to claim 1, characterized in that: The right support (101) and the left support (102) have the same specifications and are symmetrically distributed on both sides of the insulating partition (2).

5. A quenching inductor for an airfoil bearing housing according to claim 1, characterized in that: The heating wire unit (4) includes a first arc-shaped heating wire (401), a second arc-shaped heating wire (403), and a third arc-shaped heating wire (404). The first arc-shaped heating wire (401) is welded to the second busbar unit (5), and the third arc-shaped heating wire (404) is welded to the first busbar unit (3). The second arc-shaped heating wire (403) and the third arc-shaped heating wire (404) are bent to provide a vertical heating wire (402).

6. A quenching inductor for an airfoil bearing housing according to claim 5, characterized in that: The first arc-shaped heating wire (401), the second arc-shaped heating wire (403), and the third arc-shaped heating wire (404) are arc-shaped structures, and the inner and outer diameters of the first arc-shaped heating wire (401), the second arc-shaped heating wire (403), and the third arc-shaped heating wire (404) are the same. The center lines of the first arc-shaped heating wire (401), the second arc-shaped heating wire (403), and the third arc-shaped heating wire (404) are located on the same vertical line. The first arc-shaped heating wire (401), the vertical heating wire (402), the second arc-shaped heating wire (403), and the third arc-shaped heating wire (404) are connected in series using an integrated circular copper tube.

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