A heat treatment device and quenching method for a spiral gear of a drive axle

Abstract

The present invention discloses a heat treatment device and a quenching method for a drive axle spiral gear, including a processing table and a heating component arranged on the top of the processing table. Both sides of the top of the processing table are fixedly provided with adjusting cylinders, and the tops of the two adjusting cylinders are fixedly connected to the bottom of the heating component. A front vertical plate and a rear vertical plate are fixedly arranged on the top of the processing table in sequence from front to back. The present invention relates to the technical field of gear processing. The heat treatment device and the quenching method for the drive axle spiral gear can, through the rapid reset of the impact block and its contact with the stop rod, then the next push rod continues to squeeze the impact block to drive the hollow column to rotate intermittently at equal angles, and cooperate with the heating component to uniformly heat the teeth of the drive axle spiral gear, improving the heat treatment effect. Moreover, through the setting of the adjusting component, it is convenient to adjust the length of the push rod, and the drive axle spiral gear with different tooth pitch distances can be heated, with stronger applicability and being convenient for processing drive axle spiral gears of different models.

Description

Technical Field

[0001] The present invention relates to the technical field of gear processing, and in particular to a heat treatment device and a quenching method for a drive axle spiral gear. Background Art

[0002] When processing a drive axle spiral gear, heat treatment is required. However, the existing heat treatment devices have the following problems:

[0003] (1) When heat-treating a drive axle spiral gear, generally, workers need to put the gear on a heating device for heating. The teeth of the drive axle spiral gear are prone to uneven heating, resulting in poor heat treatment effect. Moreover, the existing heat treatment devices have poor applicability and are not convenient for processing drive axle spiral gears of different models.

[0004] (2) It is not convenient to quickly lock the drive axle spiral gear, and it is prone to looseness during the heating process, thus affecting the normal progress of the heat treatment work.

[0005] Therefore, the present invention proposes a heat treatment device and a quenching method for a drive axle spiral gear to solve the above-mentioned problems. Summary of the Invention

[0006] In view of the deficiencies of the prior art, the present invention provides a heat treatment device and a quenching method for a drive axle spiral gear, which solve the problems that when heat-treating a drive axle spiral gear, generally, workers need to put the gear on a heating device for heating, the teeth of the drive axle spiral gear are prone to uneven heating, resulting in poor heat treatment effect, the existing heat treatment devices have poor applicability and are not convenient for processing drive axle spiral gears of different models, it is not convenient to quickly lock the drive axle spiral gear, and it is prone to looseness during the heating process, thus affecting the normal progress of the heat treatment work.

[0007] To achieve the above objectives, the present invention is realized through the following technical solutions: A heat treatment device for a drive axle spiral gear, comprising a processing table and a heating assembly arranged on the top of the processing table. Both sides of the top of the processing table are fixedly provided with adjusting cylinders, and the tops of the two adjusting cylinders are fixedly connected to the bottom of the heating assembly. The front vertical plate and the rear vertical plate are fixedly arranged on the top of the processing table in sequence from front to back, and an intermittent driving assembly for intermittently driving and rotating the drive axle spiral gear is arranged between the front vertical plate and the rear vertical plate.

[0008] Preferably, the intermittent drive assembly includes a hollow column that rotates through the front of the front vertical plate. A drive ratchet is fixed on the surface of the hollow column in front of the front vertical plate. An impact block rotates on the surface of the hollow column behind the front vertical plate. An embedded pawl rotates in front of the impact block through a rotating shaft. A fixed rod is fixed in front of the impact block. A tension spring is fixed between the fixed rod and the embedded pawl. A limiting column for limiting the embedded pawl is fixed in front of the impact block. A stop rod for limiting the impact block is fixed on the left side of the rear vertical plate through an inclined rod. An extension rod is fixed behind the impact block. A return spring is fixed between the extension rod and the stop rod. A rotating rod rotates through the front of the rear vertical plate. A hollow turntable is fixed at the front end of the rotating rod. A push rod slides through the surface of the hollow turntable. There are three push rods. A rotation positioning assembly for positioning the drive axle helical gear is arranged on the hollow column. A drive component for driving the hollow turntable is arranged behind the rear vertical plate. An adjustment assembly for adjusting the length of the push rod is arranged in front of the hollow turntable.

[0009] Preferably, the rotation positioning assembly includes sliding rods that slide through both sides of the surface of the hollow column. Support arc blocks are fixed at the outer ends of the two sliding rods. Convex columns are fixed on the surfaces of the two sliding rods. A return spring is fixed between the two convex columns. A tapered block that cooperates with the sliding rod slides on the inner wall of the hollow column through a slider. A screw rod threadedly penetrates through the front of the hollow column. One end of the screw rod is rotatably connected to the front of the tapered block. The other end of the screw rod is fixed with an adjustment disc.

[0010] Preferably, the drive component includes a servo motor fixed behind the rear vertical plate. A main pulley is fixed on the surface of the output shaft of the servo motor. A secondary pulley is fixed on the surface of the rotating rod. The surfaces of the main pulley and the secondary pulley are connected by belt drive.

[0011] Preferably, the adjustment assembly includes an adjustment rod that rotates through the front of the hollow turntable. A disc is fixed on the surface of the adjustment rod. An arc-shaped extrusion block is fixed on the surface of the disc. A collar is fixed on the surface of the push rod. A pressure spring is sleeved on the surface of the push rod.

[0012] Preferably, a rotating gear is fixed at one end of the adjustment rod. A moving block slides in front of the hollow turntable. A moving gear that meshes with the rotating gear is fixed in front of the moving block.

[0013] Preferably, a first magnetic block is fixed on the left side of the moving block. A second magnetic block that cooperates with the first magnetic block is fixed in front of the hollow turntable.

[0014] Preferably, the sides of the first magnetic block and the second magnetic block that are close to each other are of the same-sex magnetic poles. The diameter of the main pulley is smaller than the diameter of the secondary pulley.

[0015] The present invention also discloses a quenching method for a heat treatment device of a drive axle helical gear, which specifically comprises the following steps:

[0016] S1. Sleeve the helical gear of the drive axle to be processed on the surface of the hollow column, then rotate the adjusting disk, drive the conical block to move backward through the screw, and then push the two convex columns to slide outside the hollow column, support the inner wall of the helical gear of the drive axle through the supporting arc block, and fix the helical gear of the drive axle, then start the adjusting cylinder to drive the heating component close to the helical gear of the drive axle, and start the heating component;

[0017] S2. Start the servo motor at the same time, and drive the rotating rod to rotate clockwise through the cooperation of the main pulley, the auxiliary pulley and the belt, and drive the push rod to rotate through the rotation of the hollow turntable. The push rod squeezes the impact block, and then pushes the driving ratchet through the embedded pawl, and then drives the hollow column to rotate counterclockwise, and then drives the drive axle helical gear to rotate a specified angle. After the impact block rotates for a certain angle, the push rod separates from the impact block. At this time, under the elastic force of the reset spring, the impact block is driven to reset quickly and contact the stop rod, and then the next push rod continues to squeeze the impact block, driving the hollow column to rotate at equal angles intermittently, and the heating component is used to achieve uniform heating of the teeth of the drive axle helical gear;

[0018] S3. When it is necessary to process the drive axle helical gear with a larger tooth pitch, push the moving gear to separate the moving gear from the rotating gear, then rotate the rotating gear, drive the disc to rotate through the adjusting rod, and then squeeze the three push rods respectively through the three arc-shaped extrusion blocks, so that the push rods extend out of the hollow turntable longer, and then release the moving gear. Under the repulsive force of the first magnetic block and the second magnetic block, drive the moving gear to quickly reset and mesh with the rotating gear, so as to lock the adjusting rod, and then repeat step S2 to achieve intermittent rotation heating of the drive axle helical gear.

[0019] Preferably, the return spring in step S2 is a tension spring.

[0020] Beneficial Effects

[0021] The present invention provides a heat treatment device and a quenching method for a drive axle helical gear. Compared with the prior art, it has the following beneficial effects:

[0022] (1) The heat treatment device and quenching method for the spiral gear of the drive axle drive the drive ratchet through the embedded pawl, and then drive the hollow column to rotate counterclockwise, and then drive the spiral gear of the drive axle to rotate a specified angle. After the impact block rotates a certain angle, the push rod separates from the impact block. At this time, under the elastic force of the return spring, the impact block is driven to quickly reset and contact the stop rod, and then the next push rod continues to squeeze the impact block to drive the hollow column to rotate intermittently at equal angles, cooperating with the heating component to uniformly heat the teeth of the spiral gear of the drive axle, improving the heat treatment effect. And through the setting of the adjustment component, it is convenient to adjust the length of the push rod, and the spiral gear of the drive axle with different tooth pitch distances can be heated, with stronger applicability and facilitating the processing of spiral gears of different models.

[0023] (2) The heat treatment device and quenching method for the spiral gear of the drive axle rotate the adjustment disk, drive the conical block to move backward through the screw rod, and then push the two convex columns to slide outwards from the hollow column, and support the inner wall of the spiral gear of the drive axle through the supporting arc block to quickly fix the spiral gear of the drive axle, so that the spiral gear of the drive axle is not easy to loosen during the heating process, and then the heat treatment work can proceed normally. Brief Description of the Drawings

[0024] Figure 1 is a perspective view of the structure of the present invention;

[0025] Figure 2 is a schematic connection diagram of the front vertical plate and the hollow column of the present invention;

[0026] Figure 3 is a schematic diagram of the front part structure of the rear vertical plate of the present invention;

[0027] Figure 4 is a schematic diagram of the rear part structure of the rear vertical plate of the present invention;

[0028] Figure 5 is a schematic connection diagram of the hollow column and the impact block of the present invention;

[0029] Figure 6 is a schematic diagram of the internal structure of the hollow column of the present invention;

[0030] Figure 7 is a schematic diagram of the conical block structure of the present invention;

[0031] Figure 8 is a main sectional view of the hollow turntable structure of the present invention;

[0032] Figure 9 For the present invention Figure 2 is a partial enlarged view of part A;

[0033] Figure 10 For the present invention Figure 3 is a partial enlarged view of part B.

[0034] In the figure: 1 - processing table, 2 - heating component, 3 - adjusting cylinder, 4 - front vertical plate, 5 - rear vertical plate, 6 - intermittent driving component, 61 - hollow column, 62 - driving ratchet, 63 - impact block, 64 - rotating shaft, 65 - embedded ratchet pawl, 66 - fixing rod, 67 - tension spring, 68 - limiting column, 69 - inclined rod, 610 - stop rod, 611 - extension rod, 612 - return spring, 613 - rotating rod, 614 - hollow turntable, 615 - push rod, 616 - rotating positioning component, 6161 - sliding rod, 6162 - supporting arc block, 6163 - convex column, 6164 - returning spring, 6165 - slider, 6166 - conical block, 6167 - screw rod, 6168 - adjusting disc, 617 - driving component, 6171 - servo motor, 6172 - main pulley, 6173 - auxiliary pulley, 6174 - belt, 618 - adjusting component, 6181 - adjusting rod, 6182 - disc, 6183 - arc-shaped extrusion block, 6184 - collar, 6185 - pressure spring, 6186 - rotating gear, 6187 - moving block, 6188 - moving gear, 6189 - first magnet, 61810 - second magnet. Specific implementation manners

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0036] Please refer to Figures 1-10 , the present invention provides two technical solutions: a heat treatment device for a driving axle helical gear, specifically including the following embodiments:

[0037] Embodiment 1

[0038] A heat treatment device for a driving axle helical gear includes a processing table 1 and a heating component 2 arranged on the top of the processing table 1. Adjusting cylinders 3 are fixed on both sides of the top of the processing table 1, which are electrically connected to an external power supply and controlled by a control switch. The tops of the two adjusting cylinders 3 are fixed to the bottom of the heating component 2. A front vertical plate 4 and a rear vertical plate 5 are sequentially fixed on the top of the processing table 1 from front to back. An intermittent driving component 6 for intermittently driving and rotating the driving axle helical gear is arranged between the front vertical plate 4 and the rear vertical plate 5.

[0039] The intermittent drive assembly 6 includes a hollow column 61 that rotates through the front of the front vertical plate 4. There is a certain damping between the hollow column 61 and the front vertical plate 4. When the impact block 63 rotates around the surface of the hollow column 61, the hollow column 61 will not be driven. A drive ratchet 62 is fixed on the surface of the hollow column 61 in front of the front vertical plate 4. An impact block 63 rotates on the surface of the hollow column 61 behind the front vertical plate 4. In front of the impact block 63, an embedded pawl 65 rotates through a rotating shaft 64 and can push the drive ratchet 62 to rotate. A fixed rod 66 is fixed in front of the impact block 63. A tension spring 67 is fixed between the fixed rod 66 and the embedded pawl 65 to facilitate the quick reset of the embedded pawl 65. A limit post 68 for limiting the embedded pawl 65 is fixed in front of the impact block 63. On the left side of the rear vertical plate 5, a stop rod 610 for limiting the impact block 63 is fixed through an inclined rod 69 to facilitate the limiting and blocking of the impact block 63, so that the impact block 63 rebounds to the same position each time. An extension rod 611 is fixed behind the impact block 63. A return spring 612 is fixed between the extension rod 611 and the stop rod 610 to facilitate the quick reset of the impact block 63. A rotating rod 613 rotates through the front of the rear vertical plate 5. A hollow turntable 614 is fixed at the front end of the rotating rod 613 and is hollow inside. A push rod 615 slides through the surface of the hollow turntable 614 and can push the impact block 63 to rotate. There are three push rods 615, and the three push rods 615 are equally spaced on the hollow turntable 614. A rotary positioning assembly 616 for positioning the drive axle spiral gear is arranged on the hollow column 61. A drive component 617 for driving the hollow turntable 614 is arranged behind the rear vertical plate 5. An adjustment assembly 618 for adjusting the length of the push rod 615 is arranged in front of the hollow turntable 614.

[0040] The rotary positioning assembly 616 includes slide rods 6161 that slide through both sides of the surface of the hollow column 61. Support arc blocks 6162 are fixed to the outer ends of the two slide rods 6161 and fit against the inner side of the drive axle spiral gear to achieve the support and fixation of the drive axle spiral gear. Convex columns 6163 are fixed to the surfaces of the two slide rods 6161. A return spring 6164 is fixed between the two convex columns 6163 to facilitate the quick reset of the slide rods 6161. A tapered block 6166 that cooperates with the slide rods 6161 slides on the inner wall of the hollow column 61 through a slider 6165 and can simultaneously squeeze the two slide rods 6161. A screw rod 6167 is threaded through the front of the hollow column 61. One end of the screw rod 6167 is rotatably connected to the front of the tapered block 6166, and the other end of the screw rod 6167 is fixed with an adjustment disk 6168.

[0041] The driving component 617 includes a servo motor 6171 fixed behind the rear vertical plate 5, which is electrically connected to an external power supply and controlled by a control switch. A main pulley 6172 is fixed on the surface of the output shaft of the servo motor 6171, and a secondary pulley 6173 is fixed on the surface of the rotating rod 613. The surfaces of the main pulley 6172 and the secondary pulley 6173 are connected by a belt 6174.

[0042] The adjustment assembly 618 includes an adjustment rod 6181 that rotates and passes through the front of the hollow turntable 614, a disk 6182 is fixed to the surface of the adjustment rod 6181, an arc-shaped extrusion block 6183 is fixed to the surface of the disk 6182, a ring 6184 is fixed to the surface of the push rod 615, and a pressure spring 6185 is sleeved on the surface of the push rod 615 to facilitate the rapid resetting of the push rod 615, a rotating gear 6186 is fixed to one end of the adjustment rod 6181, a moving block 6187 is slidably provided in front of the hollow turntable 614, a moving gear 6188 meshing with the rotating gear 6186 is fixed in front of the moving block 6187, a first magnetic block 6189 is fixed to the left side of the moving block 6187, and a second magnetic block 61810 used in conjunction with the first magnetic block 6189 is fixed in front of the hollow turntable 614.

[0043] The side where the first magnetic block 6189 and the second magnetic block 61810 are close to each other are like poles. The repulsive force between the like poles is used to make the moving gear 6188 stably mesh with the rotating gear 6186 to achieve the positioning of the adjustment rod 6181. The diameter of the main pulley 6172 is smaller than the diameter of the secondary pulley 6173, so that the rotating rod 613 can rotate slowly.

[0044] Example 2

[0045] A heat treatment device for a helical gear of a driving axle comprises a treatment table 1 and a heating component 2 arranged on the top of the treatment table 1, adjusting cylinders 3 are fixed on both sides of the top of the treatment table 1, which are electrically connected to an external power supply and controlled by a control switch, the tops of the two adjusting cylinders 3 are fixed to the bottom of the heating component 2, a front vertical plate 4 and a rear vertical plate 5 are fixed to the top of the treatment table 1 from front to back, and an intermittent driving component 6 for intermittently driving and rotating the helical gear of the driving axle is arranged between the front vertical plate 4 and the rear vertical plate 5.

[0046] The intermittent drive assembly 6 includes a hollow column 61 that passes through and rotates in front of the front vertical plate 4. There is a certain damping between the hollow column 61 and the front vertical plate 4. When the impact block 63 rotates around the surface of the hollow column 61, the hollow column 61 will not be driven. A driving ratchet 62 is fixed to the surface of the hollow column 61 located in front of the front vertical plate 4. A strike block 63 is rotatably arranged on the surface of the hollow column 61 located behind the front vertical plate 4. An embedded pawl 65 is rotated in front of the strike block 63 through a rotating shaft 64, which can push the driving ratchet 62 to rotate. A fixed rod 66 is fixed in front of the strike block 63, and a tension spring 67 is fixed between the fixed rod 66 and the embedded pawl 65 to facilitate the rapid resetting of the embedded pawl 65. A limiting column 68 for limiting the embedded pawl 65 is fixed in front of the strike block 63, and a slanting rod 69 is fixed on the left side of the rear vertical plate 5 to limit the strike block 63. The limit stop rod 610 is convenient for limiting the impact block 63 so that the position of the impact block 63 is the same each time it rebounds. An extension rod 611 is fixed to the rear of the impact block 63, and a reset spring 612 is fixed between the extension rod 611 and the stop rod 610 to facilitate the rapid reset of the impact block 63. A rotating rod 613 is rotatably passed through the front of the rear vertical plate 5, and a hollow turntable 614 is fixed to the front end of the rotating rod 613. The hollow setting, the surface of the hollow turntable 614 is slid through by a push rod 615, which can push the impact block 63 to rotate. Three push rods 615 are arranged, and the three push rods 615 are equidistantly distributed on the hollow turntable 614. A rotating positioning assembly 616 for positioning the helical gear of the drive axle is arranged on the hollow column 61, and a driving component 617 for driving the hollow turntable 614 is arranged at the rear of the rear vertical plate 5.

[0047] The rotation positioning assembly 616 includes a slide bar 6161 that slides through both sides of the surface of the hollow column 61. The outer ends of the two slide bars 6161 are fixed with support arc blocks 6162, which fit with the inner side of the helical gear of the drive axle to support and fix the helical gear of the drive axle. The surfaces of the two slide bars 6161 are fixed with protruding columns 6163. A return spring 6164 is fixed between the two protruding columns 6163 to facilitate the rapid reset of the slide bars 6161. The inner wall of the hollow column 61 slides with a conical block 6166 used in conjunction with the slide bar 6161 through a slider 6165, which can squeeze the two slide bars 6161 at the same time. A screw rod 6167 is threaded through the front thread of the hollow column 61. One end of the screw rod 6167 is rotatably connected to the front of the conical block 6166, and the other end of the screw rod 6167 is fixed with an adjusting disk 6168.

[0048] The driving component 617 includes a servo motor 6171 fixed behind the rear vertical plate 5, which is electrically connected to an external power supply and controlled by a control switch. A main pulley 6172 is fixed on the surface of the output shaft of the servo motor 6171, and a secondary pulley 6173 is fixed on the surface of the rotating rod 613. The surfaces of the main pulley 6172 and the secondary pulley 6173 are connected by a belt 6174.

[0049] The present invention also discloses a quenching method for a heat treatment device of a drive axle spiral gear, which specifically includes the following steps:

[0050] S1. The drive axle spiral gear to be processed is sleeved on the surface of the hollow column 61. Then, the adjusting disc 6168 is rotated, and the conical block 6166 is driven to move backward by the screw 6167, so as to push the two convex columns 6163 to slide outwards of the hollow column 61. The inner wall of the drive axle spiral gear is supported by the supporting arc block 6162 to fix the drive axle spiral gear. Then, the adjusting cylinder 3 is started to drive the heating component 2 close to the drive axle spiral gear, and the heating component 2 is started;

[0051] S2. At the same time, the servo motor 6171 is started, and the rotating rod 613 is driven to rotate clockwise through the cooperation of the main pulley 6172, the auxiliary pulley 6173 and the belt 6174. The push rod 615 is driven to rotate by the rotation of the hollow turntable 614. The push rod 615 squeezes the impact block 63, and then the driving ratchet wheel 62 is pushed through the embedded pawl 65, so as to drive the hollow column 61 to rotate counterclockwise, and then drive the drive axle spiral gear to rotate by a specified angle. After the impact block 63 rotates by an angle, the push rod 615 is separated from the impact block 63. At this time, under the elastic force of the return spring 612, the impact block 63 is driven to quickly reset and contact the stop rod 610. Then, the next push rod 615 continues to squeeze the impact block 63 to drive the hollow column 61 to rotate intermittently and equally in angle, and the teeth of the drive axle spiral gear are uniformly heated through the heating component 2;

[0052] S3. When it is necessary to process a drive axle spiral gear with a larger tooth pitch, the moving gear 6188 is pushed to separate the moving gear 6188 from the rotating gear 6186. Then, the rotating gear 6186 is rotated, and the disc 6182 is driven to rotate through the adjusting rod 6181. Then, the three arc-shaped pressing blocks 6183 respectively press the three push rods 615, so that the length of the push rod 615 extending out of the hollow turntable 614 is more. Then, the moving gear 6188 is released, and under the repulsive force of the first magnet 6189 and the second magnet 61810, the moving gear 6188 is driven to quickly reset and engage with the rotating gear 6186 to lock the adjusting rod 6181. Then, step S2 is repeated to realize the intermittent rotation heating of the drive axle spiral gear.

[0053] The return spring 612 in step S2 is a tension spring.

[0054] At the same time, the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0055] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0056] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heat treatment device for a drive axle spiral gear, comprising a treatment table (1) and a heating assembly (2) arranged on the top of the treatment table (1), characterized in that: On both sides of the top of the processing table (1), adjusting cylinders (3) are fixedly installed. The tops of the two adjusting cylinders (3) are fixedly connected to the bottom of the heating assembly (2). On the top of the processing table (1), a front vertical plate (4) and a rear vertical plate (5) are fixedly installed in sequence from front to back. Between the front vertical plate (4) and the rear vertical plate (5), an intermittent driving assembly (6) for intermittently driving the rotation of the spiral gear of the driving axle is arranged; The intermittent driving assembly (6) includes a hollow column (61) rotatably penetrating in front of the front vertical plate (4). On the surface of the hollow column (61) in front of the front vertical plate (4), a driving ratchet (62) is fixedly installed. On the surface of the hollow column (61) behind the front vertical plate (4), an impact block (63) is rotatably installed. In front of the impact block (63), an embedded pawl (65) is rotatably installed through a rotating shaft (64). In front of the impact block (63), a fixing rod (66) is fixedly installed. A tension spring (67) is fixedly installed between the fixing rod (66) and the embedded pawl (65). In front of the impact block (63), a limiting column (68) for limiting the embedded pawl (65) is fixedly installed. On the left side of the rear vertical plate (5), a stop rod (610) for limiting the impact block (63) is fixedly installed through an inclined rod (69). Behind the impact block (63), an extension rod (611) is fixedly installed. A return spring (612) is fixedly installed between the extension rod (611) and the stop rod (610). A rotating rod (613) rotatably penetrates in front of the rear vertical plate (5). At the front end of the rotating rod (613), a hollow turntable (614) is fixedly installed. On the surface of the hollow turntable (614), a push rod (615) slidably penetrates. There are three push rods (615). On the hollow column (61), a rotation positioning assembly (616) for positioning the spiral gear of the driving axle is arranged. Behind the rear vertical plate (5), a driving component (617) for driving the hollow turntable (614) is arranged. In front of the hollow turntable (614), an adjusting assembly (618) for adjusting the length of the push rod (615) is arranged; The rotation positioning assembly (616) includes slide rods (6161) slidably penetrating through both sides of the surface of the hollow column (61). At the outer ends of the two slide rods (6161), support arc blocks (6162) are fixedly installed. On the surfaces of the two slide rods (6161), convex columns (6163) are fixedly installed. A return spring (6164) is fixedly installed between the two convex columns (6163). Inside the inner wall of the hollow column (61), a tapered block (6166) cooperating with the slide rod (6161) is slidably installed through a slider (6165). In front of the hollow column (61), a screw rod (6167) threadedly penetrates. One end of the screw rod (6167) is rotatably connected to the front of the tapered block (6166). The other end of the screw rod (6167) is fixedly installed with an adjusting disc (6168); The adjusting assembly (618) comprises an adjusting rod (6181) which rotates and passes through the front of the hollow rotating disk (614); a disk (6182) is fixed on the surface of the adjusting rod (6181); an arc-shaped extrusion block (6183) is fixed on the surface of the disk (6182); a collar (6184) is fixed on the surface of the push rod (615); a pressure spring (6185) is sleeved on the surface of the push rod (615); a rotating gear (6186) is fixed on one end of the adjusting rod (6181); A moving block (6187) slides in front of the turntable (614); a moving gear (6188) meshing with the rotating gear (6186) is fixed in front of the moving block (6187); a first magnetic block (6189) is fixed on the left side of the moving block (6187); a second magnetic block (61810) used in conjunction with the first magnetic block (6189) is fixed in front of the hollow turntable (614); and the sides of the first magnetic block (6189) and the second magnetic block (61810) that are close to each other have like magnetic poles.

2. The heat treatment device for a drive axle spiral gear according to claim 1, characterized in that: The driving component (617) comprises a servo motor (6171) fixed behind the rear vertical plate (5); a main pulley (6172) is fixed on the surface of the output shaft of the servo motor (6171); a secondary pulley (6173) is fixed on the surface of the rotating rod (613); the surfaces of the main pulley (6172) and the secondary pulley (6173) are connected by a belt (6174); the diameter of the main pulley (6172) is smaller than the diameter of the secondary pulley (6173).

3. A quenching method for implementing the heat treatment device for a drive axle spiral gear according to claim 2, characterized in that: The specific steps include: S1. The drive axle helical gear to be processed is sleeved on the surface of the hollow column (61), and then the adjusting disk (6168) is rotated to drive the conical block (6166) to move backward through the screw rod (6167), thereby pushing the two protruding columns (6163) to slide toward the outside of the hollow column (61), and the inner wall of the drive axle helical gear is supported by the supporting arc block (6162) to fix the drive axle helical gear, and then the adjusting cylinder (3) is started to drive the heating component (2) close to the drive axle helical gear, and the heating component (2) is started; S2. At the same time, start the servo motor (6171), and drive the rotating rod (613) to rotate clockwise through the cooperation of the main pulley (6172), the auxiliary pulley (6173) and the belt (6174). Drive the push rod (615) to rotate through the rotation of the hollow turntable (614). The push rod (615) presses the impact block (63), and then drives the driving ratchet wheel (62) through the embedded pawl (65), and then drives the hollow column (61) to rotate counterclockwise, and then drives the driving axle helical gear to rotate by a specified angle. After the impact block (63) rotates by an angle, the push rod (615) separates from the impact block (63). At this time, under the elastic force of the return spring (612), drive the impact block (63) to quickly reset and contact the stop rod (610), and then the next push rod (615) continues to press the impact block (63), driving the hollow column (61) to rotate intermittently and equally, and realizing uniform heating of the teeth of the driving axle helical gear through the heating component (2); S3. When machining a driving axle helical gear with a larger tooth pitch, push the moving gear (6188) to separate the moving gear (6188) from the rotating gear (6186), and then rotate the rotating gear (6186). Drive the disc (6182) to rotate through the adjusting rod (6181), and then drive the three push rods (615) by the three arc-shaped pressing blocks (6183) respectively, so that the length of the push rod (615) extending outside the hollow turntable (614) is more. Then release the moving gear (6188), and under the repulsive force of the first magnet (6189) and the second magnet (61810), drive the moving gear (6188) to quickly reset and engage with the rotating gear (6186) to realize the locking of the adjusting rod (6181), and then repeat step S2 to realize intermittent rotation heating of the driving axle helical gear.

4. The quenching method for implementing the heat treatment device for a drive axle spiral gear according to claim 3, characterized in that: The return spring (612) in step S2 is a tension spring.

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