Spline shaft machining and quenching device

Abstract

The utility model discloses a spline shaft machining and quenching device and relates to the technical field of quenching equipment. The quenching device structurally comprises a quenching inductor connected with an induction heating power supply, a workpiece clamping device, a water bath box and a spray cooling device, the water bath box comprises a rectangular box body with an upper opening; a partition plate extending upwards is fixed to the upper end face of one side wall of the rectangular box. According to the utility model, the workpiece clamping device adopts the upper pointed cone and the lower pointed cone which move up and down and is matched with the guide post and the screw rod motor, so that the coaxiality and the stability of the spline shaft in the quenching process are ensured; meanwhile, the upper pointed cone is driven by the driving motor and the belt pulley group to drive the spline shaft to rotate, so that the heating uniformity of the spline in the quenching inductor is guaranteed; according to the spray cooling device, a circular ring pipe is matched with a circle of spray heads pointing to the inner side of a coil of the quenching inductor, so that the quenched spline is uniformly and forcibly cooled, the high-temperature risk of the quenching inductor is reduced, and the high efficiency and the stability of the whole quenching process are improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of quenching equipment, and in particular relates to a quenching device for processing spline shafts. Background Technology

[0002] In the production and processing of splines, coaxiality is one of the important indicators for measuring their quality. The quenching process of spline shafts also faces many challenges, such as uneven heating, deformation after quenching, and poor cooling effect. These problems directly affect the assembly accuracy, transmission efficiency, and service life of the spline.

[0003] Existing spline shaft machining and quenching equipment is often complex in structure, cumbersome in operation, and struggles to achieve high-precision quenching and maintain coaxiality of spline shafts. Some equipment also pose safety hazards during the quenching process, such as potential damage to electrical components from moisture and instability of the spline shaft during quenching. Furthermore, uneven cooling after spline quenching affects the quality of the spline.

[0004] Therefore, in view of the shortcomings of the existing technology, this utility model proposes a new type of spline shaft machining quenching device. Utility Model Content

[0005] The purpose of this utility model is to provide a spline shaft processing quenching device, which combines a workpiece clamping device, a water bath, a spray cooling device, and a water-permeable baffle to achieve high-precision quenching and coaxiality maintenance of the spline shaft, while improving the safety and efficiency of the quenching process.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model relates to a quenching device for processing splined shafts, comprising a quenching inductor connected to an induction heating power supply, a workpiece clamping device, a water bath, and a spray cooling device; the water bath includes a rectangular box with an upper opening; a partition extending upward is fixed to the upper end face of one side wall of the rectangular box; the partition is placed at the connection between the induction coil of the quenching inductor and the induction heating power supply; a rubber ring is provided between the quenching inductor and the partition; the workpiece clamping device is installed on the outer wall of one side of the rectangular box, and the workpiece clamping device includes an upper cone and a lower cone that can move up and down, the axis of the upper cone, the axis of the lower cone, and the axis of the induction coil of the quenching inductor are collinear; the upper cone is located above the quenching inductor; the lower cone is located below the quenching inductor.

[0008] As a preferred technical solution of this utility model, a row of inclined support strips is fixed on the front and rear inner walls of the rectangular box from the upper left end to the lower right end; a water-permeable baffle is installed on the row of support strips.

[0009] As a preferred embodiment of this utility model, the permeable baffle includes a rectangular steel plate; a borosilicate rubber layer is fixed on the rectangular steel plate; and the rectangular steel plate and the borosilicate rubber layer are provided with a plurality of oval through holes.

[0010] As a preferred embodiment of this utility model, the workpiece clamping device further includes a rectangular frame; two guide columns are fixed between the upper and lower inner walls of the rectangular frame; a first lead screw motor is fixed through the upper wall of the rectangular frame; a first moving platform is mounted on the two guide columns and the lead screw of the first lead screw motor; a second lead screw motor is mounted on the first moving platform via a motor mounting seat; a second moving platform is mounted on the two guide columns and the lead screw of the second lead screw motor; a lower cone is rotatably mounted on the first moving platform via a bearing; an upper cone is rotatably mounted on the second moving platform via a bearing; a drive motor is mounted on the second moving platform; a first pulley is mounted on the upper cone; a second pulley is mounted on the output shaft of the drive motor; the first pulley and the second pulley are connected by a belt drive.

[0011] As a preferred embodiment of this utility model, the spray cooling device includes a water pump and a circular tube positioned directly above the quenching inductor coil; a ring of nozzles pointing inwards towards the inside of the quenching inductor coil is fixedly connected to the circular tube; a water inlet connector is fixedly connected to the circular tube; the circular tube is mounted on the partition plate via two connecting rods, and the water pump is mounted on the partition plate; the water pump is connected to the water inlet connector via a high-temperature resistant water pipe; the water pump draws water from the rectangular box through the water inlet pipe.

[0012] As a preferred embodiment of this invention, a filter is installed at the end of the water inlet pipe.

[0013] This utility model has the following beneficial effects:

[0014] 1. The workpiece clamping device of this utility model adopts an upper and lower pointed cone that move up and down, in conjunction with a guide column and a lead screw motor, to ensure the coaxiality and stability of the spline shaft during the quenching process. At the same time, the upper pointed cone is driven by a drive motor and a pulley assembly to rotate the spline shaft, ensuring the uniformity of heating of the spline in the quenching inductor.

[0015] 2. This utility model separates the quenching inductor from the induction heating power supply by setting a partition on one side of the water bath and setting a rubber ring to enhance the sealing, thereby preventing water from damaging the induction heating power supply during the water bath process and improving the safety and service life of the overall device.

[0016] 3. The spray cooling device of this utility model uses a circular tube in conjunction with a ring of nozzles pointing to the inside of the quenching inductor coil to uniformly and forcibly cool the spline after quenching, thereby reducing the high temperature risk of the quenching inductor and improving the efficiency and stability of the overall quenching process.

[0017] 4. The design of the permeable baffle of this utility model not only provides a buffer for the splines after quenching and avoids the impact between splines, but also enables the smooth flow of water through the oval through hole, ensuring the uniform cooling of the splines in the water bath.

[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the spline shaft machining and quenching device of this utility model.

[0021] Figure 2 for Figure 1 The front view.

[0022] Figure 3 This is a schematic diagram of the structure of the induction heating power supply, quenching inductor, water bath, and spray cooling device.

[0023] Figure 4 This is a schematic diagram of the workpiece clamping device.

[0024] Figure 5 This is a schematic diagram of the permeable baffle.

[0025] The attached diagram lists the components represented by each number as follows:

[0026] 1-Induction heating power supply, 2-Quenching inductor, 3-Workpiece clamping device, 4-Water bath, 5-Spray cooling device, 6-Permeable partition, 41-Rectangular box, 42-Partition, 43-Support strip, 31-Upper cone, 32-Lower cone, 33-Rectangular frame, 34-Guide column, 35-First lead screw motor, 36-First moving platform, 37-Motor mounting base, 38-Second lead screw motor, 39-Second moving platform, 310-Drive motor, 311-First pulley, 312-Second pulley, 313-Belt, 51-Water pump, 52-Circular annular pipe, 53-Sprayer, 54-Water inlet connector, 55-Connecting rod, 56-High temperature resistant water pipe, 57-Water inlet pipe, 61-Rectangular steel plate, 62-Borosilicate rubber layer, 63-Oval through hole. Detailed Implementation

[0027] 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 scope of protection of the present utility model. Specific Implementation Example 1:

[0029] Please see Figure 1-5 As shown, this utility model is a quenching device for spline shaft machining, including a quenching inductor 2 connected to an induction heating power supply 1, a workpiece clamping device 3, a water bath 4, and a spray cooling device 5. The water bath 4 includes a rectangular box 41 with an upper opening. A partition 42 extending upwards is fixed to the upper end face of one side wall of the rectangular box 41. The partition 42 is located at the connection between the induction coil of the quenching inductor 2 and the induction heating power supply 1. A rubber ring is provided between the quenching inductor 2 and the partition 42. The workpiece clamping device 3 is installed on the outer wall of one side of the rectangular box 41. The workpiece clamping device 3 includes an upper cone 31 and a lower cone 32 that can move up and down. The axes of the upper cone 31, the lower cone 32, and the induction coil of the quenching inductor 2 are collinear. The upper cone 31 is located above the quenching inductor 2. The lower cone 32 is located below the quenching inductor 2. The partition 42 of the water bath 4 separates the spray cooling device 5, which heats the spline shaft quenching inductor 2 and cools the spline shaft after quenching, from the induction heating power supply 1, so as to avoid damage caused by water splashing from the induction heating power supply 1.

[0030] The workpiece clamping device 3 also includes a rectangular frame 33. Two guide posts 34 are fixed between the upper and lower inner walls of the rectangular frame 33. A first lead screw motor 35 is fixed through the upper wall of the rectangular frame 33. A first moving platform 36 is mounted on the lead screw of the two guide posts 34 and the first lead screw motor 35. A second lead screw motor 38 is mounted on the first moving platform 36 via a motor mounting base 37. A second moving platform 39 is mounted on the lead screw of the two guide posts 34 and the second lead screw motor 38. A lower cone 32 is rotatably mounted on the first moving platform 36 via a bearing. An upper cone 31 is rotatably mounted on the second moving platform 39 via a bearing. A drive motor 310 is mounted on the second moving platform 39. A first pulley 311 is mounted on the upper cone 31. A second pulley 312 is mounted on the output shaft of the drive motor 310. The first pulley 311 and the second pulley 312 are connected by a belt 313.

[0031] In the workpiece clamping device 3, the second moving platform 39, which mounts the upper cone 31 and the lower cone 32, shares a pair of guide posts 34 with the first moving platform 36. This improves the coaxiality of the upper and lower cones 31 and 32 while reducing structural bulk. The spline shaft is clamped in the center holes at its upper and lower ends, respectively, onto the upper cone 31 and the lower cone 32. In the workpiece clamping device 3, the drive motor 310 drives the upper cone 31 to rotate the spline shaft via a pulley set, ensuring uniform heating of the spline in the quenching inductor 2. The first lead screw motor 35 drives the spline to move up and down in the quenching inductor 2, and the second lead screw motor 38 drives the upper cone 31 to adjust the clamping and replacement of the spline. This device is suitable for splines of a certain length.

[0032] The spray cooling device 5 includes a water pump 51 and a circular tube 52 positioned directly above the coil of the quenching inductor 2. A ring of nozzles 53, pointing inwards towards the coil of the quenching inductor 2, is fixedly connected to the circular tube 52. A water inlet connector 54 is also fixedly connected to the circular tube 52. The circular tube 52 is mounted on a partition 42 via two connecting rods 55, and the water pump 51 is mounted on the partition 42. The water pump 51 is connected to the water inlet connector 54 via a high-temperature resistant water pipe 56. The water pump 51 draws water from the rectangular housing 41 through a water inlet pipe 57, the end of which is fitted with a filter. The ring of nozzles 53 mounted on the circular tube 52 in the spray cooling device 5 provides uniform and forced cooling to the quenched splines, reducing the risk of high temperatures to the quenching inductor 2 and ensuring efficient operation of the overall quenching process.

[0033] The rectangular box 41 has a row of inclined support strips 43 fixed to its front and rear inner walls from the upper left end to the lower right end. A permeable baffle 6 is installed on the row of support strips 43. The permeable baffle 6 includes a rectangular steel plate 61. A borosilicate rubber layer 62 is fixed on the rectangular steel plate 61. The borosilicate rubber layer 62 cushions the splines dropped into the water bath 4. The rectangular steel plate 61 and the borosilicate rubber layer 62 have several oval through holes 63. The quenched splines can be directly dropped into the water in the water bath 4. The splines cool down in the water bath and slide down the inclined surface of the permeable baffle 6 to the lower end, avoiding collisions between the splines.

[0034] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0035] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A spline shaft machining and quenching device, characterized in that: it comprises a quenching inductor (2) connected with an induction heating power supply (1), a workpiece clamping device (3), a water bath tank (4), and a spray cooling device (5); the water bath tank (4) comprises an open-top rectangular box (41); an upwardly extending partition plate (42) is fixed to the upper end face of one side wall of the rectangular box (41); the partition plate (42) is arranged at the connecting portion between the induction coil of the quenching inductor (2) and the induction heating power supply (1); a rubber ring is arranged between the quenching inductor (2) and the partition plate (42); the workpiece clamping device (3) is installed on one side outer wall of the rectangular box (41); the workpiece clamping device (3) comprises an upper pointed cone (31) and a lower pointed cone (32) which can move up and down; the axis of the upper pointed cone (31), the axis of the lower pointed cone (32), and the axis of the induction coil of the quenching inductor (2) are collinear; the upper pointed cone (31) is located above the quenching inductor (2); and the lower pointed cone (32) is located below the quenching inductor (2). A row of inclined support slats (43) are fixed to the inner walls of the front and rear of the rectangular box (41) from the left upper end to the right lower end; and a row of the support slats (43) are installed with water-permeable partitions (6). The water-permeable partitions (6) comprise a rectangular steel plate (61); a borosilicate rubber layer (62) is fixed to the rectangular steel plate (61); and a plurality of waist-round through holes (63) are formed in the rectangular steel plate (61) and the borosilicate rubber layer (62) together. The workpiece clamping device (3) further comprises a rectangular frame (33); two guide columns (34) are fixed between the upper and lower inner walls of the rectangular frame (33); a first lead screw motor (35) is fixed through the upper wall of the rectangular frame (33); a first moving platform (36) is jointly installed on the two guide columns (34) and the lead screw of the first lead screw motor (35); a second lead screw motor (38) is installed on the first moving platform (36) through a motor mounting seat (37); a second moving platform (39) is jointly installed on the two guide columns (34) and the lead screw of the second lead screw motor (38); the lower pointed cone (32) is rotatably installed on the first moving platform (36) through a bearing; the upper pointed cone (31) is rotatably installed on the second moving platform (39) through a bearing; a driving motor (310) is installed on the second moving platform (39); a first belt pulley (311) is installed on the upper pointed cone (31); a second belt pulley (312) is installed on the output shaft of the driving motor (310); and the first belt pulley (311) and the second belt pulley (312) are driven by a belt (313).

2. The spline shaft machining and quenching apparatus according to claim 1, characterized by ​ 3. The spline shaft machining and quenching apparatus according to claim 2, characterized by ​ 4. The spline shaft machining and quenching apparatus according to claim 1, characterized by ​ 5. The spline shaft machining and quenching apparatus according to claim 1, wherein The spray cooling device (5) comprises a water pump (51) and a circular pipe (52) arranged above the coil of the quenching inductor (2); a plurality of spray heads (53) are fixedly and communicatively arranged on the circular pipe (52) and directed to the inner side of the coil of the quenching inductor (2); a water inlet connector (54) is fixedly and communicatively arranged on the circular pipe (52); the circular pipe (52) is installed on the partition plate (42) through two connecting rods (55), and the water pump (51) is installed on the partition plate (42); the water pump (51) and the water inlet connector (54) are connected through a high-temperature-resistant water pipe (56); and the water pump (51) takes water from the rectangular box body (41) through a water inlet pipe (57).

6. The spline shaft machining and quenching apparatus according to claim 5, wherein A filter is mounted at the end of the water inlet pipe (57).

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