Intermediate-frequency straightening door type inductor used after planing gear ring deformation

Abstract

The utility model belongs to the technical field of gear machining, and particularly relates to an intermediate-frequency straightening door type inductor used after planing gear ring deformation, which comprises an installation seat, the installation seat is fixedly connected with the bottom ends of two supports at the same time, and the upper ends of the two supports are fixedly connected with the upper ends of two metal induction pieces respectively. Through the design of a door-shaped inductor, two metal induction pieces are used for introducing medium-frequency current, a magnetizer is combined for focusing a magnetic field, local heating is conducted on the inner ring side of a toothed arc section, meanwhile, cooling liquid is sprayed through a liquid spraying box, and tensile stress is manually generated on the inner diameter of the toothed arc section rapidly, so that straightening deformation caused by thermal stress is counteracted; the outer tooth profile is effectively corrected into the size meeting the drawing requirement, a non-mechanical contact type straightening method is adopted in the device, the problem that machining cannot be carried out due to the fact that the hardness of the tooth part is high is solved, the device is particularly suitable for a tooth arc section deformed after quenching, and the reutilization rate of parts and the product quality are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to gear processing technical field, concretely relates to a kind of for the straightening door type inductor of middle frequency after the deformation of planing split gear ring. BACKGROUND

[0002] In the field of mechanical manufacturing, planing split gear ring is usually used for large gear ring production and processing. Large gear ring is usually divided into multiple arc segments for easy processing and installation. For example, the gear ring involved in this patent is divided into eight segments. After the tooth arc segment is surface quenched by induction heating, the part will produce straightening deformation due to thermal stress, causing the outer gear profile size to deviate from the drawing requirements. Since the tooth part has been processed into a finished product, its hardness has increased significantly, and it cannot be machined again to correct the deformation. Traditional correction methods, such as mechanical pressure straightening or overall heat treatment, often have poor results and may even cause cracks or further deformation, making it difficult to accurately restore the part size. SUMMARY

[0003] The utility model aims to provide a special straightening device for high-hardness tooth arc segment deformation, which can effectively correct the outer gear profile by non-contact heating and cooling methods and artificially induce stress on the inner diameter.

[0004] The technical solutions adopted by the utility model are as follows:

[0005] A middle-frequency straightening door-type inductor for planing split gear ring after deformation includes a mounting seat, which is fixedly connected with the bottom ends of two brackets. The upper ends of the two brackets are fixedly connected with the upper ends of two metal induction pieces. The opposite ends of the two metal induction pieces are fixedly connected with two magnetic conductors. The front side of the front bracket is fixedly connected with the rear end of a fixed plate. The bottom surface of the fixed plate is overlapped with the upper surface of a mounting plate. The front end of the mounting plate is provided with three sleeve holes two.

[0006] The three sleeve holes two are respectively sleeved with three bolts one. The bottom ends of the two bolts one on the left and right sides are fixedly connected with the upper ends of two liquid injection boxes two. The bottom end of the bolt one in the middle is fixedly connected with the upper end of the middle of the liquid injection box one.

[0007] Further, two sleeve holes one are provided on the front end of the fixed plate. The two sleeve holes one are respectively sleeved with two bolts two.

[0008] Further, the upper ends of the two bolts two are respectively screw-connected with two threaded sleeves two. The two threaded sleeves two are in contact with the upper surface of the fixed plate.

[0009] Further, each bolt one is screw-connected with two threaded sleeves one. A gasket is sleeved between the threaded sleeve one and the mounting plate. The gasket is sleeved on the outside of the bolt one.

[0010] Further, two opposite ends of the two liquid spraying boxes and the bottom end of the liquid spraying box one are provided with spray holes, and the mounting seat is provided with mounting holes at four corners.

[0011] Further, the front ends of the liquid spraying box one and the two liquid spraying boxes two are fixedly connected with one ends of the three water injection pipes.

[0012] The utility model discloses the technical effect achieved is:

[0013] The utility model discloses a door type inductor design utilizes two metal inductive pieces to pass into medium frequency current, and combines the magnetic focus field of magnet, and the inside ring side of tooth arc segment is locally heated, and simultaneously through the liquid spraying box sprays coolant, and the artificial tensile stress of tooth arc segment inside diameter is quickly generated, thereby offsetting the straightening deformation caused by thermal stress, effectively re-correcting the external gear profile to the size that meets the drawing requirement, and the device adopts non-mechanical contact type straightening method, avoids the problem that mechanical processing cannot be carried out because of the high hardness of tooth part, is especially suitable for the tooth arc segment of deformation after quenching, improves the reusability of part and product quality. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is the front view structure schematic diagram of the utility model, and

[0015] Fig. 2 It is the structure schematic diagram of support in the utility model, and

[0016] Fig. 3 It is the explosion drawing of mounting plate and liquid spraying box one, liquid spraying box two connection structure in the utility model.

[0017] In the drawings, the component list represented by each sign is as follows:

[0018] 1, mounting seat, 2, support, 3, mounting hole, 4, mounting plate, 5, bolt one, 6, liquid spraying box one, 7, liquid spraying box two, 8, water injection pipe, 9, magnet, 10, fixed plate, 11, sleeve hole one, 12, metal inductive piece, 13, gasket, 14, threaded sleeve one, 15, bolt two, 16, threaded sleeve two, 17, sleeve hole two. DETAILED DESCRIPTION

[0019] In order to make the purpose and the advantage of the utility model more clearly, the following specific description is carried out to the utility model combining with examples.It should be understood that the following text is only used to describe one or several specific implementation modes of the utility model, and does not strictly limit the protection scope of the utility model.

[0020] For example, Figs. 1-3As shown, a kind of medium frequency straightening door type inductor for the deformation of gear ring after being shaved, it includes mounting seat 1, mounting seat 1 is fixedly connected with the bottom end of two supports 2, the upper end of two supports 2 is fixedly connected with the upper end of two metal sensing parts 12 respectively, the opposite end of two metal sensing parts 12 is fixedly connected with two magnetic conductors 9 respectively, the upper end of two supports 2 is fixedly connected with the upper end of two metal sensing parts 12 respectively, so that two metal sensing parts 12 form a inverted "U" shaped door type structure.The lower part of the door type structure forms a processing area for tooth arc segment to pass through, through the design of door type inductor, two metal sensing parts 12 are connected with medium frequency current, and combined with magnetic conductor 9 focusing magnetic field, the inner ring side of tooth arc segment is locally heated, at the same time, cooling liquid is sprayed through liquid spraying box, artificial tensile stress is generated in the inner diameter of tooth arc segment quickly, so as to offset the straightening deformation caused by thermal stress, effectively modify the outer gear profile to the size required by drawing, the front side of front side support 2 is fixedly connected with the rear end of fixed plate 10, the bottom surface of fixed plate 10 is overlapped with the upper surface of mounting plate 4, the front end of mounting plate 4 is provided with three sleeve holes two 17 simultaneously, magnetic conductor 9 is made of silicon steel sheet and other magnetic conductive materials, its role is to constrain and concentrate magnetic force line, so that the inductive magnetic field is more concentratedly applied to the inner ring side of tooth arc segment to be heated, so as to improve the heating efficiency and the concentration of temperature field;

[0021] Three sleeve holes two 17 are sleeved with three bolts one 5 respectively, the bottom end of left and right two bolts one 5 is fixedly connected with the upper end of two liquid spraying boxes two 7 respectively, the bottom end of middle bolt one 5 is fixedly connected with the middle upper end of liquid spraying box one 6, through this layout, liquid spraying box one 6 is located in the middle, two liquid spraying boxes two 7 are located on both sides, which cover the width direction of tooth arc segment together, at the same time, liquid spraying box one 6 and liquid spraying box two 7 are connected with mounting plate 4 through bolt one 5, bolt two 15, threaded sleeve one 14 and threaded sleeve two 16, so that the height position of liquid spraying box one 6 and liquid spraying box two 7 can be adjusted through rotating threaded sleeve one 14 and threaded sleeve two 16, to adapt to different specifications of tooth arc segment.

[0022] Two sleeve holes one 11 are provided in the front end of fixed plate 10.

[0023] The upper end of two bolt two 15 is threadedly connected with two threaded sleeve two 16 respectively, and two threaded sleeve two 16 are in contact with the upper surface of fixed plate 10.

[0024] Each bolt one 5 is threadedly connected with two threaded sleeve one 14, gasket 13 is sleeved between threaded sleeve one 14 and mounting plate 4, and gasket 13 is sleeved outside bolt one 5.

[0025] The opposite ends of the two liquid spraying boxes two 7 and the bottom end of the liquid spraying box one 6 are provided with spray holes, mounting holes 3 are formed at the four corners of the mounting seat 1, the device is fixed on a machining table through the mounting seat 1, the bracket 2 and the sensing part are stably arranged, the liquid spraying boxes are connected with the water injection pipes 8 to connect the cooling liquid source, synchronous control of heating and cooling is realized, the straightening process is simple and fast, the difficulty of manual intervention is reduced, and the production efficiency is improved.

[0026] The front ends of the liquid spraying box one 6 and the two liquid spraying boxes two 7 are fixedly connected with one ends of the three water injection pipes 8, and the other ends of the water injection pipes 8 are connected with the external cooling liquid source.

[0027] The working principle of the utility model is as follows: when the device is used to straighten the deformed tooth arc segment, first, the whole device is stably installed on the machining table through the mounting holes 3 on the mounting seat 1, then, the two metal sensing parts 12 are connected with the intermediate frequency power supply, and the three water injection pipes 8 are connected with the external cooling liquid supply system;

[0028] During the straightening operation, the deformed tooth arc segment is horizontally moved from the rear to the front of the device in the posture that the inner ring side faces upwards, so that the tooth arc segment passes through the area between the liquid spraying box one 6 and the liquid spraying box two 7 and under the “door” formed by the two metal sensing parts 12, when the part of the tooth arc segment that needs to be straightened moves to the position directly below the inductor, the movement is stopped, the energized metal sensing part 12 rapidly generates eddy current on the inner ring side surface of the tooth arc segment under the assistance of the magnet conductor 9, so that the tooth arc segment is heated to a specific temperature (usually lower than the phase change point) in a very short time;

[0029] After the heating is completed (or at the same time as the heating), the cooling system is started, the cooling liquid enters the liquid spraying box one 6 and the liquid spraying box two 7 through the water injection pipes 8 and is uniformly sprayed from the spray holes to the area that has just been heated, the rapid cooling and contraction of the surface layer metal are restricted by the internal relatively hot metal, so that the required tensile stress is artificially induced on the inner diameter surface layer of the tooth arc segment, the tensile stress is opposite to the quenching residual stress direction that causes the tooth arc segment to straighten, through multiple and orderly “heating-cooling” cycles, the deformed external gear profile can be gradually corrected and restored to the size precision required by the drawing.

[0030] The above is only the preferred embodiment of the utility model, and it should be pointed out that, for ordinary technical personnel in the technical field, some improvements and refinements can be made without departing from the principle of the utility model, and these improvements and refinements should also be regarded as the protection range of the utility model. The structures, devices and operation methods not specifically described and explained in the utility model are implemented according to the conventional means in the field without special description and limitation.

Claims

1. A medium frequency straightening portal inductor for straightening a deformed gear ring of a hobbing gear, comprising a mounting base (1), characterized in that: The mounting seat (1) is fixedly connected with the bottom ends of two supports (2), the upper ends of the two supports (2) are fixedly connected with the upper ends of two metal sensing parts (12), the opposite ends of the two metal sensing parts (12) are fixedly connected with two magnetic conductors (9), the front side of the front side of the front side of the support (2) is fixedly connected with the rear end of the fixed plate (10), the bottom surface of the fixed plate (10) is overlapped with the upper surface of the mounting plate (4), and the front end of the mounting plate (4) is provided with three sleeve holes two (17). The three sleeve holes two (17) are respectively sleeved with three bolts one (5), the bottom ends of the left and right bolts one (5) are fixedly connected with the upper ends of two liquid spraying boxes two (7), and the bottom end of the middle bolt one (5) is fixedly connected with the upper end of the middle part of the liquid spraying box one (6).

2. The medium frequency straightening portal inductor for straightening the deformed gullet ring according to claim 1, characterized in that: The front end of the fixed plate (10) is provided with two sleeve holes one (11), and the two sleeve holes one (11) are respectively sleeved with two bolts two (15).

3. The medium frequency straightening portal inductor for straightening the deformed gullet ring according to claim 2, characterized in that: The upper ends of the two bolts two (15) are respectively screwed with two threaded sleeves two (16), and the two threaded sleeves two (16) are in contact with the upper surface of the fixed plate (10).

4. The medium frequency straightening portal inductor for straightening the deformed gullet ring according to claim 1, characterized in that: Each bolt one (5) is screwed with two threaded sleeves one (14), a gasket (13) is sleeved between the threaded sleeve one (14) and the mounting plate (4), and the gasket (13) is sleeved outside the bolt one (5).

5. The medium frequency straightening portal inductor for straightening the deformed gullet ring according to claim 1, characterized in that: The opposite ends of the two liquid spraying boxes two (7) and the bottom end of the liquid spraying box one (6) are provided with spray holes, and mounting holes (3) are formed in the four corners of the mounting seat (1).

6. The medium frequency straightening portal inductor for straightening the deformed gullet ring according to claim 1, characterized in that: The front ends of the liquid spraying box one (6) and the two liquid spraying boxes two (7) are fixedly connected with one ends of three water injection pipes (8).

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