Integral quenching tool for driving gear

Abstract

The utility model relates to an integral quenching tool for a driving gear, which comprises a connector with a left connecting flange plate and a right connecting flange plate at two ends, an insulating spacer, a profiling sensor with a magnetizer at the tooth root of a gear workpiece, a flange plate fastening bolt, and an insulating spacer fastening bolt for fastening the insulating spacer at the axial center part of the profiling sensor, the two insulating blocks are provided with raised heads and arc sections and are symmetrically connected to the two ends of the profiling sensor through sensor connecting bolts, and the annular water spraying box is provided with connecting grooves which are connected with the raised heads of the insulating blocks in an embedded mode and fastened to the arc sections of the insulating blocks through annular water spraying box connecting bolts. The driving gear is subjected to synchronous induction quenching, different parts are integrally heated at the same time, heating is uniform, heating efficiency is high, tooth roots are heated sufficiently and cooled uniformly, a tooth profile hardened layer is uniform, the tooth roots are quenched thoroughly, quenching quality is good, the service life of the driving gear is long, and production efficiency is high. The device can be widely applied to the driving gear heat treatment process.

Description

Technical Field

[0001] The invention relates to an integral quenching tool for a driving gear, which can be widely used in a heat treatment process of a driving gear. Background Art

[0002] The existing traditional scanning type integral heating quenching tooling has problems such as insufficient heating temperature of the tooth root, overheating of the tooth top, uneven heating and cooling, large difference in the hardened layer of the tooth profile, incomplete quenching of the tooth root, quenching soft spots, and positive and negative surfaces. The existing single-tooth induction quenching tooling has problems such as low heating efficiency, inaccurate positioning, and local annealing. Summary of the invention

[0003] The purpose of the present invention is to provide a driving gear integral quenching tool with synchronous induction quenching, simultaneous overall heating of different parts, uniform heating, high heating efficiency, sufficient heating of tooth roots, uniform cooling, uniform hardened layer of tooth profile, thorough quenching of tooth roots, good quenching quality, long service life of driving gears, and high production efficiency.

[0004] In order to achieve the above-mentioned purpose, the driving gear integral quenching tool of the present invention comprises a connector with a left connecting flange and a right connecting flange at both ends, a connector water inlet interface and a connector water outlet interface in the middle, an insulating gasket extending to the profiling sensor along the axial center of the connector, a profiling sensor connecting flange at the end, a profiling sensor water inlet and a profiling sensor water outlet in the middle, a profiling sensor with a conductive magnet at the root of the gear workpiece, a flange fastening bolt connecting the right connecting flange and the profiling sensor connecting flange, an insulating gasket fastening bolt fastening the insulating gasket to the axial center of the profiling sensor, two insulating blocks with a convex head and an arc segment, which are symmetrically connected at both ends of the profiling sensor by the sensor connecting bolts, a connecting groove, a water inlet interface of a water spray box, a connecting groove and a convex head of the insulating block, and an annular water spray box fastened to the arc segment of the insulating block by the annular water spray box connecting bolts.

[0005] The drive gear integral quenching tool of the present invention comprises a circular water spray box, the inner side of which is provided with a cooling water spray groove, which is symmetrical at 135 degrees and has a plurality of cooling water spray holes evenly distributed.

[0006] The driving gear integral quenching tool of the present invention, the profiling sensor is designed completely according to the specific structure and number of teeth of the driving gear workpiece, and its shape is consistent with the external tooth structure of the driving gear workpiece.

[0007] The drive gear integral quenching tool of the present invention, the connector, the connector is used to connect the profiling sensor and the transformer. The transformer can be connected through the left connecting flange. The profiling sensor and the annular water spray box are connected by two symmetrical insulating blocks, wherein the profiling sensor and the insulating block, and the insulating block and the annular water spray box are all fixed by bolts.

[0008] The working principle of the driving gear integral quenching tool of the present invention is: using the principles of electromagnetic induction and skin effect, an induced current is generated on the outer surface of the gear workpiece, and the induced current forms a loop on the inner surface of the workpiece, that is, an eddy current. This eddy current converts electrical energy into thermal energy and quickly heats the gear workpiece. Induction heating can make the distribution trend of the induced magnetic field highly consistent with the shape of the gear, and realize one-time synchronous heating, and the temperature is uniform everywhere. At the same time, a circular ring-shaped water spray box is used for cooling and quenching, which ensures the consistency and stability of the hardened layer and surface hardness of the gear at various places, completely overcoming the drawbacks of traditional scanning induction quenching such as quenching positive and negative surfaces, insufficient local heating, shallow tooth root hardening layer and low hardness, and also overcomes the defects of inaccurate positioning of the tooth part of single tooth induction quenching, large differences in hardening layers of different teeth, and annealing and quenching soft spots caused by local repeated heating.

[0009] The driving gear integral quenching tool of the present invention adopts a contour sensor to simultaneously perform synchronous induction heating on the outer teeth of the driving gear as a whole, and uses an annular water spray box to spray cool the outer teeth of the driving gear as a whole, thereby realizing synchronous induction quenching of the driving gear.

[0010] The drive gear integral quenching tool of the present invention has a distribution of induced current that matches the induction area of ​​the drive gear, thereby achieving overall heating of different parts at the same time, uniform heating, and high heating efficiency.

[0011] The invention discloses an integral quenching tool for a driving gear. The profiling sensor is provided with a magnetic conductor at the root of the gear workpiece to enhance the induction heating at the root of the gear. Therefore, the root of the gear is fully heated, solving the problem of insufficient root heating in the prior art.

[0012] The drive gear integral quenching tool of the present invention utilizes an annular water spray box to spray cold the outer teeth of the drive gear as a whole. The annular water spray box is provided with a cooling water spray groove on its inner side, which is 135° symmetrical and has a number of cooling water spray holes evenly distributed. The spray angle of the cooling water spray holes in the horizontal direction is horizontal, and the spray angle of the cooling water spray holes in the inclined direction is 45° to the axis, so that all the outer tooth surfaces and the upper and lower end surfaces of the drive gear can be covered, ensuring that the tooth profile and the upper and lower end surfaces are sprayed cold at the same time, achieving the purpose of uniform cooling everywhere. The cooling device effectively avoids the problems of uneven local cooling of parts, quenching soft spots, and quality of positive and negative surfaces caused by the unidirectional spray device.

[0013] The driving gear integral quenching tool of the present invention adopts integral synchronous induction heating and integral spray cooling technology, so that the tooth profile hardening layer is uniform, the tooth root is hardened through, the quenching quality is good, and the driving gear has a long service life.

[0014] The drive gear integral quenching tool of the present invention adopts an integral synchronous induction quenching tool, and only one tool and one positioning are required to achieve the integral quenching of a single drive gear. Compared with the traditional single-tooth induction quenching, the positioning times are saved by more than 60%; compared with the scanning induction tool, the heating and cooling time of a single piece can be shortened by about 20 seconds, thereby improving the production efficiency. Therefore, the present invention has high production efficiency.

[0015] To sum up, the overall quenching tooling of the drive gear of the present invention and synchronous induction quenching can heat different parts as a whole at the same time, with uniform heating and high heating efficiency. The tooth root is fully heated and cooled evenly, the tooth profile hardening layer is uniform, the tooth root is thoroughly quenched, the quenching quality is good, the service life of the drive gear is long, and the production efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments thereof.

[0017] Figure 1 It is a schematic diagram of the structure of the present invention;

[0018] Figure 2 yes Figure 1 Bottom view of

[0019] Figure 3 yes Figure 1 Schematic diagram of the connector structure in FIG.

[0020] Figure 4 yes Figure 3 A top view of

[0021] Figure 5 yes Figure 2 Schematic diagram of the profiling sensor structure;

[0022] Figure 6 yes Figure 5 AA section view in;

[0023] Figure 7 yes Figure 1 Schematic diagram of the insulating block structure;

[0024] Figure 8 yes Figure 7 Top view of the .

[0025] Fig. 9 yes Figure 1 Schematic diagram of the ring-shaped water spray box structure;

[0026] Fig.10 yes Fig. 9 Top view of the . DETAILED DESCRIPTION

[0027] exist Figures 1 to 10 In the present invention, the driving gear integral quenching tool comprises a connector 1 with a left connecting flange 1-1 and a right connecting flange 1-2 at both ends, a connector water inlet interface 1-3 and a connector water outlet interface 1-4 in the middle, an insulating gasket 2 extending to the profiling sensor is arranged along the axial center of the connector, a profiling sensor connecting flange 3-1 is arranged at the end, a profiling sensor water inlet 3-2 and a profiling sensor water outlet 3-3 are arranged in the middle, and a profiling sensor 3 with a magnetic conductor 3-4 is arranged at the root of the gear workpiece 8, The flange fastening bolts 4 that connect the right connecting flange to the connecting flange of the profiling sensor, the insulating gasket fastening bolts 5 that fasten the insulating gasket to the axial center part of the profiling sensor, are provided with a convex head a, with an arc segment b, and two insulating blocks 6 that are symmetrically connected at both ends of the profiling sensor through the sensor connecting bolts 9, and are provided with a connecting groove c, a water spray box water inlet interface d, and an annular water spray box 7 that is engaged with the connecting groove and the convex head of the insulating block and is fastened to the arc segment of the insulating block through the annular water spray box connecting bolts 10.

[0028] The drive gear integral quenching tool of the present invention, the annular water spray box, has a cooling water spray groove on its inner side, which is 135° symmetrical and has a plurality of cooling water spray holes e evenly distributed.

[0029] The driving gear integral quenching tool of the present invention, the profiling sensor is designed completely according to the specific structure and number of teeth of the driving gear workpiece, and its shape is consistent with the external tooth structure of the driving gear workpiece.

[0030] The above-mentioned integral quenching tool for the driving gear of the present invention is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this profession can make some changes or modify the technical contents disclosed above into equivalent embodiments with equivalent changes without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent replacement and improvement made to the above embodiments without departing from the content of the technical solution of the present invention, based on the technical essence of the present invention, within the spirit and principles of the present invention, still fall within the protection scope of the technical solution of the present invention.

Claims

1. A driving gear integral quenching tool, characterized in that: It includes a connector with a left connecting flange and a right connecting flange at both ends, a connector water inlet interface and a connector water outlet interface in the middle, an insulating gasket extending to the profiling sensor along the axial center of the connector, a profiling sensor connecting flange at the end, a profiling sensor water inlet and a profiling sensor water outlet in the middle, a profiling sensor with a magnetic conductor at the root of the gear workpiece, a flange fastening bolt connecting the right connecting flange and the profiling sensor connecting flange, an insulating gasket fastening bolt fastening the insulating gasket to the axial center of the profiling sensor, two insulating blocks with a convex head and an arc segment, which are symmetrically connected at both ends of the profiling sensor through the sensor connecting bolts, a connecting groove, a water inlet interface of a water spray box, a ring-shaped water spray box that is engaged with the connecting groove and the convex head of the insulating block and is fastened to the arc segment of the insulating block through the ring-shaped water spray box connecting bolts.

2. The driving gear integral quenching tool according to claim 1, characterized in that: The inner side of the annular water spray box is provided with a cooling water spray groove which is 135° symmetrical and has a plurality of cooling water spray holes evenly distributed.

3. The driving gear integral quenching tool according to claim 1, characterized in that: The profiling sensor is designed completely according to the specific structure and number of teeth of the driving gear workpiece, and its shape is consistent with the external tooth structure of the driving gear workpiece.

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