A sensor for gear induction hardening

Abstract

The invention discloses an inductor for gear induction hardening, comprising a connecting plate, an induction head and a magnetizer, the induction head comprising a first induction body, a second induction body and a connecting block connecting the first induction body and the second induction body, the first induction body and the second induction body are both provided with an induction body positioning groove, the first induction body and the second induction body both comprise an induction body body, an extended induction body is provided on the rear side of the induction body body, the extended induction body and the induction body body are an integral structure, the connecting plate comprises a first connecting plate and a second connecting plate, the first and second induction bodies are respectively connected to the first and second connecting plates, the magnetizer is mounted on the connecting block, and the magnetizer is provided with a magnetizer positioning groove connected to the connecting block. The invention has a simple structure and is easy to process, can improve the strength and precision of the induction head, can ensure that each component is easy and quick to install, prolongs the service life of the induction body, solves the problem of heating the magnetizer due to magnetic field concentration, and improves the heating efficiency of the induction body.

Description

Technical Field

[0001] The invention relates to an inductor for gear induction hardening, belonging to the technical field of induction heating components. Background Art

[0002] At present, the inductor used for gear induction hardening is composed of an induction head, a magnet, and a water channel with a water hole in the connecting plate. The design of the induction head determines the service life and processing quality of the inductor. Most of the existing induction heads are processed from copper tubes or copper blocks as a whole. The induction heads processed from copper tubes are not only low in strength and easy to change, but also difficult to weld and it is difficult to ensure the accuracy of the induction heads; while the induction heads processed from copper blocks as a whole are difficult to process, and it is difficult to align the verticality of each surface many times, and the processing cost of using a machining center is high. The difficulty in processing the water channel with water holes can easily result in low water flow, reducing the service life of the inductor; in addition, most of the existing induction heads are triangular, and the current is easy to accumulate when flowing through the position where the magnet is, causing the magnetic field to become stronger and heat the magnet, causing the magnet to heat up and reduce efficiency or burn out. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides an inductor for gear induction hardening which has a simple structure, is convenient to manufacture and has a prolonged service life.

[0004] The technical solution of the present invention to solve the above technical problems is as follows: An inductor for gear induction quenching, comprising a connecting plate, an induction head and a magnetizer, the induction head comprising a first inductor, a second inductor and a connecting block connecting the first and second inductors, the front sides of the first and second inductors are each provided with an inductor positioning groove for installing the connecting block, the first and second inductors each comprise an inductor body, an extended inductor is provided on the rear side of the inductor body, the extended inductor and the inductor body are an integral structure, the connecting plate comprises a first connecting plate and a second connecting plate, the first and second inductors are respectively connected to the first and second connecting plates, the magnetizer is installed on the connecting block, and the magnetizer is provided with a magnetizer positioning groove connected to the connecting block.

[0005] The beneficial effects of the present invention are as follows: the structure is simple and the processing is convenient. The strength and precision of the induction head can be improved, and the installation of each component can be convenient and quick, and the service life of the induction device can be extended. The induction head is provided with an extension part, and the problem of heating the magnetic conductor due to the concentration of the magnetic field is solved, and the heating efficiency of the induction device is improved. When the alternating current flows into and out of the first and second induction bodies, the originally concentrated induced current can be dispersed to the four surfaces of the copper conductor at the edge of the magnetic conductor, specifically the side surface of the induction body and the two side edges of the extended induction body, which can well change the distribution of the current at the edge of the first and second induction bodies, and avoid the induced magnetic field generated by the concentration of the induced current here interfering with the induction body for induction heating and the induced magnetic field heating itself and the magnetic conductor, which can not only improve the processing stability, but also improve the service life of the induction body.

[0006] Based on the above technical solution, the present invention can also be improved as follows.

[0007] Furthermore, a fixing block is provided between the first and second inductors and the magnetic conductor.

[0008] The beneficial effect of adopting the above further scheme is that the fixed block is made of insulating material and is used to press the magnetic conductor to play the role of shock absorption and stabilization of the magnetic conductor. When AC current passes through the induction coil, the magnetic conductor will vibrate due to the action of the induced magnetic field. This vibration not only changes the inductance, making the medium frequency power supply difficult to track and causing unstable output, but also causes the magnetic conductor to loosen and fall out if it continues for a long time. Adding the fixed block will increase the overall strength of the induction head.

[0009] Furthermore, a reinforcement plate is provided between the first connecting plate and the second connecting plate.

[0010] The beneficial effect of adopting the above further scheme is that the reinforcing plate is made of insulating material. Since the conductive poles of the connecting plate cannot be connected end to end, the overall strength is poor and it is easy to deform. Adding a reinforcing plate can increase the overall strength of the connecting plate, and it will hardly deform during use, thereby extending the service life of the sensor.

[0011] Furthermore, the cross-section of the extended induction body is a trapezoidal, D-shaped or rectangular structure.

[0012] The beneficial effect of adopting the above further scheme is that on the one hand, it solves the problem of induced magnetic field generated by induced current accumulation interfering with induction heating of the induction body and the induced magnetic field heating itself and the magnetic conductor, and on the other hand, it achieves a stable connection with the connecting plate.

[0013] Furthermore, a connecting portion connected to the first and second connecting plates is also provided on the rear side of the extended inductor.

[0014] The beneficial effect of adopting the above further solution is that the connection is convenient and it is easy to connect with the connecting plate.

[0015] Furthermore, the lengths of two sides of the extended inductor in a trapezoidal or rectangular structure are smaller than the lengths of two sides of the inductor body.

[0016] The beneficial effect of adopting the above further scheme is that, on the one hand, it is easy to process, and on the other hand, it can well change the distribution of current on the first and second inductors, which is more conducive to heating the parts and avoids the situation where the induced magnetic field generated by the first and second inductors heats itself and the magnetic conductor, thereby improving the heating efficiency of the inductor and extending the service life of the magnetic conductor.

[0017] Furthermore, it also includes a water cooling mechanism.

[0018] Furthermore, the water cooling mechanism includes a water cooling channel, which is provided with a water inlet and a water outlet. The water cooling channel includes a water inlet channel arranged on the first connecting plate, a return water channel arranged on the second connecting plate, an internal cooling water channel arranged on the first and second inductors, and a connecting water channel arranged in the connecting block.

[0019] The beneficial effect of adopting the above further scheme is that not only are the channels and water channels of each component structure easy to process, but the water channel structure can also enhance the water cooling effect, so that the heat generated by the coil heating can be quickly absorbed and flowed, thereby improving the cooling effect of the sensor and will not cause a large temperature rise or drop in the sensor during use, thereby reducing the thermal stress of the induction coil caused by temperature changes, and further extending the service life of the sensor.

[0020] Furthermore, the magnetic conductor is made of silicon steel sheet.

[0021] Furthermore, the connecting plate is provided with mounting holes and / or positioning slots.

[0022] The beneficial effect of adopting the above further solution is that it is used for installation positioning and alignment of the sensor for gear induction hardening, thereby realizing the installation of the sensor for gear induction hardening. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention;

[0024] Figure 2 for Figure 1 A schematic diagram of a top view structure;

[0025] Figure 3 It is a structural schematic diagram of the magnetic conductor of the present invention;

[0026] Figure 4 is a schematic structural diagram of a first inductor of the present invention;

[0027] Figure 5 It is a structural schematic diagram of the connection block of the present invention;

[0028] In the figure, 1, first connecting plate; 2, second connecting plate; 3, first inductor; 31, inductor body; 32, extended inductor; 33, connecting part; 4, second inductor; 5, connecting block; 6, magnetic conductor; 7, fixing block; 8, reinforcing plate; 9, mounting hole; 10, positioning slot; 11, water inlet channel; 12, return water channel; 13, internal cooling water channel; 14, connecting water channel; 15, water inlet; 16, water outlet; 17, entrance; 18, exit; 19, engineering hole; 20, inductor positioning slot; 21, magnetic conductor positioning slot; 23, arc transition. DETAILED DESCRIPTION

[0029] The principles and features of the present invention are described below in conjunction with examples. The examples are only used to explain the present invention and are not used to limit the scope of the present invention.

[0030] like Figure 1-Figure 5 As shown, an inductor for induction hardening of gears comprises a connecting plate, an induction head and a magnetizer 6, wherein the induction head comprises a first inductor 3, a second inductor 4 and a connecting block 5 connecting the first and second inductors, the front sides of the first and second inductors are provided with inductor positioning grooves 20 for installing the connecting blocks, the first and second inductors each comprise an inductor body 31, an extended inductor 32 is provided on the rear side of the inductor body, the extended inductor and the inductor body are an integral structure, the connecting plate comprises a first connecting plate 1 and a second connecting plate 2, the extended inductors of the first and second inductors are respectively connected to the first and second connecting plates correspondingly, the magnetizer 6 is installed on the connecting block 5, and the magnetizer 6 is provided with a magnetizer positioning groove 21 connected to the connecting block.

[0031] The connecting block is made of copper. This connecting block is connected to the first and second inductors, plays a positioning role for the first and second inductors, and can reduce welding deformation; the outer surface of the connecting block is flush with the front surface of the magnetic conductor, and the corner of the connecting block and the contact position with the magnetic conductor are arc transition 23. When processing gear parts, the thermal efficiency of the dangerous section position at the root of the gear tooth can be improved, and the hardening depth is relatively deep. The quenching effect of the dangerous section at the root of the gear tooth determines the service life of the gear. Since the root position is prone to stress concentration, in order to avoid the occurrence of cracks, the hardening depth at the root position must be strictly controlled. This design can increase the depth of the dangerous section at the root of the gear tooth without deepening the hardening depth of the root tooth, thereby increasing the service life of the gear.

[0032] A fixing block 7 is also provided between the first and second induction bodies and the magnetizer. The fixing block is made of insulating material and is used to press the magnetizer to reduce vibration and stabilize the magnetizer. When an AC current passes through the induction coil, the magnetizer 6 will vibrate due to the induced magnetic field. This vibration not only changes the inductance, which will make it difficult to track the intermediate frequency power supply and cause unstable output, but also causes the magnetizer 6 to loosen and fall out if it continues for a long time. After adding the fixing block 7, the overall strength of the induction head will be increased.

[0033] A reinforcing plate 8 is provided between the first connecting plate and the second connecting plate. The reinforcing plate is made of insulating material. Since the conductive poles of the connecting plate cannot be connected end to end, the overall strength is poor and it is easy to deform. Adding a reinforcing plate can increase the overall strength of the connecting plate, and almost no deformation will occur during use, thereby extending the service life of the sensor.

[0034] The cross section of the extended induction body is trapezoidal, D-shaped or rectangular. Figure 4 The cross section of the expanded induction body is a trapezoidal structure, wherein the bottom of the trapezoidal structure is connected to the induction body to form an integral structure. On the one hand, it solves the problem that the induction magnetic field generated by the induced current concentration interferes with the induction heating of the induction body and the induction magnetic field heats itself and the magnetic conductor, and on the other hand, it realizes a stable connection with the connecting plate.

[0035] The rear side of the extended inductor is also provided with a connecting portion 33 connected to the first and second connecting plates. The shape of the connecting portion is adapted to the connecting block, and the connection is convenient, and it is easy to connect to the connecting plate.

[0036] The lengths of the two sides of the extended inductor in a trapezoidal or rectangular structure are smaller than the lengths of the two sides of the inductor body. On the one hand, the processing is convenient, and on the other hand, the distribution of the current on the first and second inductors can be well changed, which is more conducive to heating the parts, and avoids the situation where the induced magnetic field generated by the first and second inductors heats itself and the magnetic conductor, thereby improving the heating efficiency of the inductor and extending the service life of the magnetic conductor.

[0037] It also includes a water cooling mechanism. The water cooling mechanism includes a water cooling channel, and the water cooling channel is provided with a water inlet and a water outlet. The water cooling channel includes a water inlet channel 11 arranged on the first connecting plate, a water return channel 12 arranged on the second connecting plate, an internal cooling water channel 13 arranged on the first and second inductors, and a connecting water channel 14 arranged in the connecting block. The structure of each component is not only convenient for processing the channels and water channels, but also the water channel structure can enhance the water cooling effect, so that the heat generated by the coil heating is quickly absorbed and flowed, thereby improving the cooling effect of the inductor and not causing a large temperature rise and temperature drop of the inductor during use, reducing the thermal stress of the induction coil caused by temperature changes, and further extending the service life of the inductor.

[0038] The magnetic conductor is made of silicon steel sheet.

[0039] The connecting plate is provided with a mounting hole 9 and / or a positioning slot 10, which are used for mounting, locating and aligning the sensor for gear induction hardening, so as to realize the rapid mounting of the sensor for gear induction hardening.

[0040] First, process the components of each part. Drill the water inlet channel on the first connecting plate, and there is a water inlet 15 on the water inlet channel. Drill the water return channel on the second connecting plate, and there is a water outlet 16 on the water return channel. In addition, the mounting holes and positioning slots are processed separately. The connecting water channel is first processed in the connecting block, and then the inlet 17 is processed at the connection position with the first inductor, and the outlet 18 is processed at the position corresponding to the second inductor. When processing the connecting water channel, an engineering hole 19 will appear, which will be welded and blocked after the assembly is completed. The first and second inductors and the connecting block are positioned and welded together to form a sensor head, and then the sensor head is welded together with the first and second connecting plates to form the main frame of the sensor, and then the processed magnetic conductor is inserted into the connecting block of the sensor head, and finally the fixing block is installed to complete the assembly of the sensor.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An inductor for gear induction hardening, comprising a connecting plate, an induction head and a magnetic conductor, characterized in that: The induction head comprises a first induction body, a second induction body and a connection block connecting the first and second induction bodies, the front sides of the first and second induction bodies are provided with an induction body positioning groove for installing the connection block, the first and second induction bodies each comprise an induction body body, an extended induction body is provided on the rear side of the induction body body, the extended induction body and the induction body body are an integral structure, the connection plate comprises a first connection plate and a second connection plate, the first and second induction bodies are respectively connected to the first and second connection plates, the magnetic conductor is installed on the connection block, and the magnetic conductor is provided with a magnetic conductor positioning groove connected to the connection block; A fixing block is provided between the first and second inductors and the magnetizer. The fixing block is made of insulating material and is used to press the magnetizer to reduce shock and stabilize the magnetizer. A reinforcing plate is provided between the first connecting plate and the second connecting plate. The reinforcing plate is made of insulating material and is used to increase the overall strength between the connecting plates. The cross section of the extended induction body is a trapezoidal structure; the rear side of the extended induction body is also provided with a connecting portion connected to the first and second connecting plates; the length of the two sides of the extended induction body with a trapezoidal structure is less than the length of the two sides of the induction body; When the alternating current flows into and out of the first and second induction bodies, the originally concentrated induction current is dispersed to the side of the induction body and the two sides of the extended induction body at the edge of the magnetic conductor, and the distribution of the current at the edge of the first and second induction bodies is changed to avoid the induction magnetic field generated by the concentration of the induction current interfering with the induction heating of the induction body and the induction magnetic field heating itself and the magnetic conductor; It also includes a water cooling mechanism; the water cooling mechanism includes a water cooling channel, the water cooling channel is provided with a water inlet and a water outlet, the water cooling channel includes a water inlet channel arranged on the first connecting plate, a water return channel arranged on the second connecting plate, an internal cooling water path arranged on the first and second inductors, and a connecting water path arranged in the connecting block.

2. The inductor for gear induction hardening according to claim 1, characterized in that: The magnetic conductor is made of silicon steel sheet.

3. The inductor for gear induction hardening according to claim 1, characterized in that: The connecting plate is provided with mounting holes and / or positioning slots.

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