Heat treatment device for gear processing and heat treatment process thereof

Abstract

The present invention discloses a heat treatment device for gear processing and a heat treatment process thereof, which belongs to the field of heat treatment technology, and includes a base, and a fixing frame is connected to the top of the base. In the present invention, the centering distance of the laser heat treatment mechanism can be adjusted by a trajectory control mechanism. Compared with the traditional quenching equipment, the synchronous heating of the gear tooth gap can be adapted by adjusting the gap distance, thereby improving the quenching uniformity during heat treatment, and at the same time, the relative cutting angles of multiple groups of laser heat treatment mechanisms on the circumferential side and the gear can be synchronously adjusted, and the main body of the laser quenching mechanism can be rotated and polarized relative to the gear during the quenching process to increase the quenching range, thereby avoiding the influence of uneven heating between the gear tooth gaps on the overall durability and strength of the gear, improving the uniform quenching effect of the gear heat treatment processing, and improving the strength and durability of the gear.

Description

Technical Field

[0001] The invention belongs to the field of heat treatment technology, and in particular relates to a heat treatment device for gear processing and a heat treatment process thereof. Background Art

[0002] Gear processing heat treatment is an important part of the gear manufacturing process. It changes the gear structure and performance by controlling the heating and cooling process of the gear within a certain temperature range to improve the hardness, strength and wear resistance of the gear. The main purpose of gear processing heat treatment is to change the microstructure and physical properties of the gear to give it better mechanical properties and service life. This includes improving the hardness, wear resistance, fatigue resistance and toughness of the gear.

[0003] The Chinese invention patent with the authorization announcement number CN113355505B discloses a heat treatment device for gears, which relates to the field of gear processing technology, including a base, a heating component is fixedly installed on the base, a rotating rod is installed horizontally in the heating component, a rotating shaft frame is fixedly installed on the base, a bottom rotating mechanism, a rotating card mechanism, a rotating gear mechanism, a pressing plate mechanism and a rod insertion mechanism are arranged on the base, a supporting rod is fixedly installed on the base, a rotating rod is fixedly installed on the inner side wall of the supporting rod, and a bottom rotating mechanism is fixedly installed on the base, and the upper end of the arc plate is driven to move downward by the upper bracket moving upward. The upper end of the arc plate is separated from the side sliding rod, and the micro spring four drives the slider to approach the turntable two through its own elastic force, and the slider drives the plug post to approach the turntable two, and the plug post is inserted into the clamping hole of the turntable two again. At this time, the turn bar two will drive the turn bar one to continue to rotate. The above-mentioned equipment realizes intermittent heating of the gear by rotating the gear to improve the heating uniformity. However, due to the existence of teeth in the gear, the heating component relies on the heat transfer from the tooth surface to the tooth gap and performs heating treatment when heating the tooth gap. If the heating between the gear teeth is not sufficient, it is easy to affect the durability and physical properties of the gear. Summary of the invention

[0004] The purpose of the present invention is to propose a heat treatment device for gear processing and a heat treatment process thereof in order to solve the problem that when a heating component heats the tooth gap, it mostly relies on heat transfer from the tooth surface to the tooth gap and performs heating treatment, and insufficient heating between the gear teeth can easily affect the durability and physical properties of the gear.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A heat treatment device for gear processing, comprising a base, a fixing frame connected to the top of the base, a plurality of laser heat treatment mechanisms equidistantly distributed in the inner cavity of the fixing frame, and the laser heat treatment mechanisms are configured to be movable along the radial direction of the fixing frame;

[0007] The top of the base is rotatably connected to a rotating box, and a trajectory control mechanism is provided on the top of the rotating box. The laser heat treatment mechanism is driven to move radially by the rotation of the rotating box and the trajectory control mechanism. The top of the base is connected to a three-jaw chuck through a rotating table. The three-jaw chuck is located at the axial center of the rotating box. The heat treatment position of the clamped gear and the laser heat treatment mechanism is adjusted by rotating the three-jaw chuck.

[0008] The rotation of the rotating box drives the limiting sleeve to extrude so that the laser heat treatment mechanism adjusts the relative position of the gear with the axial position. The trajectory control mechanism can be used to adjust the distance between the tooth surface and the gap between the teeth. This is beneficial for laser heating multiple teeth on the circumferential side of the gear to be treated and the gap between the teeth during heat treatment. The laser heat treatment mechanism with adjustable spacing can improve the heating uniformity and improve the gear heat treatment effect.

[0009] As a further description of the above technical solution:

[0010] The laser heat treatment mechanism includes a fixed seat, a slide table sliding along the height direction of the fixed seat is provided in the fixed seat, the top of the slide table is rotatably connected to a turntable through an axis, one side of the turntable is connected to a laser quenching mechanism body, the rear side of the fixed seat is radially movably connected to one side of the fixed frame, the turntable is configured to reciprocately rotate polarization along the axis of the axis when the slide table moves, and the quenching window range is increased by rotating the polarization of the laser quenching mechanism body.

[0011] As a further description of the above technical solution:

[0012] A disturbance rod is connected to the side of the turntable close to the slide, an opening is provided at the top of the slide, and a disturbance plate is slidably connected in the opening, a wavy stroke groove is provided on one side of the disturbance plate for the disturbance rod to slide, and the disturbance plate is connected to one side of the fixed seat, and the disturbance rod makes reciprocating motion in the stroke groove to drive the front turntable to reciprocate and rotate polarization, an electric push rod is connected to the top of the slide, the electric push rod is connected to one side of the inner cavity of the fixed seat, and guide holes are provided on both sides of the top of the slide, guide rods are slidably connected in the guide holes, and two ends of the guide rods are respectively connected between the two sides of the inner cavity of the fixed seat.

[0013] When the slide moves, it can pull the turntable to move, and the disturbance rod on the rear side of the turntable can slide in the disturbance plate and the stroke groove on one side. The disturbance rod can produce left and right reciprocating motion when moving in the wavy stroke groove. When the disturbance rod moves, it can drive the front turntable and the laser quenching mechanism body to rotate with it, so that it can drive the front laser quenching mechanism to rotate left and right when moving vertically, thereby increasing the laser quenching range, and can adjust the curvature of the disturbance plate stroke groove as needed, and adjust the swing amplitude of the front laser quenching mechanism body by replacing the stroke grooves with different strokes, thereby further improving the adjustment accuracy of the quenching amplitude and improving the quenching treatment effect.

[0014] As a further description of the above technical solution:

[0015] The fixed seat is connected to a rotating seat on the side away from the slide, and a torsion cylinder is installed on one side of the rotating seat. One end of the torsion cylinder main shaft is connected to a hinge part, and the hinge part is rotatably connected to the rotating seat, and the hinge part is connected to a moving rod on the side away from the slide, and the moving rod is inserted into an opening on one side of the fixed frame, and one end of the moving rod is connected to a travel wheel, and the travel wheel is in contact with a trajectory control mechanism. A spring is provided on the outer sleeve of the moving rod, and both ends of the spring are respectively connected to corresponding positions of the fixed frame and one side of the hinge part, and the moving rod is controlled by the trajectory control mechanism to slide in the opening to adjust the relative distance with the three-jaw chuck.

[0016] Through the designed trajectory control mechanism, when the rotating box rotates, the top limit sleeve can squeeze the travel wheel at the corresponding position. When the travel wheel is squeezed, it can drive the laser quenching mechanism body at the other end to move and adjust the relative distance with the gear. The continuously rotating rotating box can realize the staged off-fire heating of the laser quenching mechanism body, which is convenient for improving the uniformity of gear processing.

[0017] As a further description of the above technical solution:

[0018] The trajectory control mechanism includes a protective sleeve, which is connected to the top of the rotating box. A plurality of limit sleeves are equidistantly connected to the inner cavity of the protective sleeve along the axis, and the limit sleeve is in contact with one side of the travel wheel. The protective sleeve rotates to drive the convex and concave sides of the limit sleeve arc surface to drive the travel wheel to reciprocate.

[0019] As a further description of the above technical solution:

[0020] The limiting sleeve has a liquid bag inside, and multiple liquid bags are connected through the inner cavity of the protective sleeve, and one side of the inner cavity of the protective sleeve is connected to a liquid filling valve tube, and the arc of the limiting sleeve is adjusted by the liquid filling valve tube to control the reciprocating stroke of the stroke wheel.

[0021] As a further description of the above technical solution:

[0022] The limiting sleeve has an inner arc wall, and an extrusion block is attached to the inner wall of the limiting sleeve. One side of the extrusion block is rotatably connected to an adjusting screw rod through a bearing shaft. The adjusting screw rod is threadedly connected to a threaded cap embedded in the side wall of the protective sleeve. The extrusion block is driven to extrude the limiting sleeve to adjust the arc surface convex point by rotating the adjusting screw rod. Both ends of one side of the extrusion block are connected to limiting rods, and the limiting rods are slidably connected to the sliding holes opened in the limiting sleeve at the corresponding position.

[0023] Through the designed limit sleeve with an inner arc wall, the rotating adjustment screw rotates in the threaded cap to drive the extrusion block to move. The movement of the extrusion block can drive the front limit sleeve to expand the adjustment arc, which is convenient for independent rotation to adjust the position of the adjustment screw. The rotation of the adjustment screw in the bearing through the end shaft is more stable to avoid slippage and deviation. The sliding of the extrusion block in the limit sleeve through the limit rod is more stable, thereby improving the stability of the movement and fit of the front extrusion block.

[0024] As a further description of the above technical solution:

[0025] A rotating lifting mechanism is provided on the top of the base, and a hanging plate is connected to the top of the lifting shaft of the rotating lifting mechanism. Feeding mechanisms are provided around the bottom of the hanging plate. The feeding mechanism includes a lifting hydraulic cylinder. The lifting hydraulic cylinder is connected to the top of the hanging plate. One end of the lifting hydraulic cylinder piston rod is connected to a feeding clamp. Both sides of the top of the feeding clamp base are connected to the lifting cylinder. The top of the lifting cylinder piston rod is connected to a connecting rod, and a flip ring is rotatably connected between the other ends of the connecting rods on both sides. A flip cylinder for driving the flip ring is provided on one side of the connecting rod. Both sides of the inner cavity of the flip ring are connected to a limiting arc ring through a clamping cylinder. After the gear to be processed is clamped by the limiting arc ring, the flip ring flips the gear to turn over.

[0026] Through the designed feeding mechanism, multiple groups of feeding mechanisms can be set on the peripheral side to facilitate the setting of quenching process stations at different positions of the hanging plate. After quenching at the quenching station, the feeding clamp can be moved downward to clamp the gear and then moved to the other side station for cooling treatment, thereby improving the integrated processing efficiency and the quenching effect.

[0027] A heat treatment process for gear processing, specifically comprising the following steps:

[0028] Place the gear to be quenched in a three-jaw chuck, and move the claws of the three-jaw chuck to the outer circumference of the gear or the inner side of the gear for clamping and centering;

[0029] After adjusting the distance between the multiple laser heat treatment mechanisms on the peripheral side and the three-jaw chuck through the trajectory control mechanism, the laser heat treatment mechanism is controlled to work and emit a quenching laser;

[0030] The distance between the quenching laser and the gear surface is intermittently or continuously adjusted through the trajectory control mechanism. After the continuous quenching is completed, natural cooling is performed to complete the quenching or transfer to the next quenching station according to processing needs.

[0031] By adjusting the heat transfer distance between the external quenching laser and the gear during gear processing, sufficient heating can be achieved in the gear gap, improving the uniformity of gear heating, which is beneficial to improving the quenching strength, avoiding the lack of overall strength caused by heating only the gear teeth and affecting the gear's service life, and improving the processing adaptability.

[0032] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0033] In the present invention, the centering distance of the laser heat treatment mechanism can be adjusted through the trajectory control mechanism. Compared with the traditional quenching equipment, the synchronous heating of the gear tooth gap can be adapted by adjusting the gap distance, thereby improving the quenching uniformity during heat treatment. At the same time, the relative cutting angles of multiple groups of laser heat treatment mechanisms on the circumferential side and the gear can be adjusted synchronously, and the main body of the laser quenching mechanism can be rotationally polarized relative to the gear during the quenching process to increase the quenching range, thereby avoiding the influence of uneven heating between the gear tooth gaps on the overall durability and strength of the gear, improving the uniform quenching effect of the gear heat treatment process, and improving the gear strength and durability. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram of the overall structure of a heat treatment device for gear processing proposed by the present invention;

[0035] Figure 2 This is a schematic diagram of the disassembled structure of a heat treatment device for gear processing proposed by the present invention;

[0036] Figure 3 This is a schematic diagram of the lateral structure of a heat treatment device for gear processing proposed by the present invention;

[0037] Figure 4 A schematic top view of another embodiment of a heat treatment device for gear processing proposed by the present invention;

[0038] Figure 5 The present invention proposes Figure 4 The structural diagram of the enlarged part A in the middle;

[0039] Figure 6 This is a schematic diagram of the disassembled structure of a laser heat treatment mechanism of a heat treatment device for gear processing proposed by the present invention;

[0040] Figure 7 This is a schematic diagram of the assembly structure of a laser heat treatment mechanism of a heat treatment device for gear processing proposed by the present invention;

[0041] Figure 8 This is a schematic diagram of the disassembled structure of a feeding mechanism of a heat treatment device for gear processing proposed by the present invention;

[0042] Fig. 9 This is a schematic diagram of the lateral assembly structure of a feeding mechanism of a heat treatment device for gear processing proposed by the present invention.

[0043] Legend:

[0044] 1. Base; 2. Fixing frame; 3. Laser heat treatment mechanism; 301. Fixing seat; 302. Disturbance plate; 303. Laser quenching mechanism body; 304. Slide; 305. Turntable; 306. Disturbance rod; 307. Electric push rod; 308. Guide rod; 309. Rotating seat; 310. Torsion cylinder; 311. Spring; 312. Moving rod; 4. Track control mechanism; 401. Protective cover; 402. Limiting cover; 403, extrusion block; 404, adjusting screw rod; 405, limit rod; 406, filling valve tube; 5, rotating box; 6, hanging plate; 7, feeding mechanism; 701, turning ring; 702, clamping cylinder; 703, limit arc ring; 704, turning cylinder; 705, connecting rod; 706, lifting cylinder; 707, unloading clamp; 708, lifting hydraulic cylinder; 8, rotating lifting mechanism; 9, three-jaw chuck; 10, travel wheel. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] See also Figure 1-Figure 9 The present invention provides a technical solution: a heat treatment device for gear processing, comprising a base 1, a fixing frame 2 is connected to the top of the base 1, a plurality of laser heat treatment mechanisms 3 are evenly distributed in the inner cavity of the fixing frame 2, and the laser heat treatment mechanism 3 is configured to be movable radially along the fixing frame 2.

[0047] A rotating box 5 is rotatably connected to the top of the base 1, and a trajectory control mechanism 4 is provided on the top of the rotating box 5. The rotating box 5 rotates in coordination with the trajectory control mechanism 4 to drive the laser heat treatment mechanism 3 to move radially. A three-jaw chuck 9 is connected to the top of the base 1 through a rotating table. The three-jaw chuck 9 is located at the axial position of the rotating box 5. The heat treatment position of the clamped gear and the laser heat treatment mechanism 3 is adjusted by rotating the three-jaw chuck 9.

[0048] Specifically: through the designed rotating box 5, the rotation of the rotating box 5 can drive the limit sleeve 402 to extrude the laser heat treatment mechanism 3, so that the laser heat treatment mechanism 3 can move radially to adjust the relative distance between the laser heat treatment mechanism 3 and the axial position of the gear to be heat treated. The trajectory control mechanism 4 can be used to adjust the distance between the laser heat treatment mechanism 3 and the gap between the teeth. This is beneficial to laser heating multiple teeth on the circumferential side of the gear to be treated and the gaps between the teeth during heat treatment. The laser heat treatment mechanism 3 with adjustable spacing can improve the heating uniformity and improve the gear heat treatment effect.

[0049] Furthermore, the rotating box 5 can be rotationally driven by a rotation driving part between the rotating box 5 and the base 1, and can include a corresponding gear transmission mechanism and a driving motor.

[0050] See also Figure 4-Figure 7 The laser heat treatment mechanism 3 includes a fixed seat 301, in which a slide 304 is provided which slides along the height direction of the fixed seat 301, and a turntable 305 is rotatably connected to the top of the slide 304 through an axis, and one side of the turntable 305 is connected to a laser quenching mechanism body 303, and the rear side of the fixed seat 301 is radially movably connected to one side of the fixed frame 2, and the turntable 305 is configured to rotate the polarization back and forth along the axis of the axis when the slide 304 moves, and the quenching window range is increased by rotating the polarization of the laser quenching mechanism body 303.

[0051] A disturbance rod 306 is connected to the side of the turntable 305 close to the slide 304. An opening is provided at the top of the slide 304, and a disturbance plate 302 is slidably connected in the opening. A wave-shaped travel groove for the disturbance rod 306 to slide is provided on one side of the disturbance plate 302, and the disturbance plate 302 is connected to one side of the fixed seat 301. The disturbance rod 306 makes reciprocating motion in the travel groove, driving the front turntable 305 to reciprocate and rotate the polarization.

[0052] An electric push rod 307 is connected to the top of the slide 304, and the electric push rod 307 is connected to one side of the inner cavity of the fixed seat 301. Guide holes are opened on both sides of the top of the slide 304, and a guide rod 308 is slidably connected in the guide hole, and the two ends of the guide rod 308 are respectively connected between the two sides of the inner cavity of the fixed seat 301.

[0053] A rotating seat 309 is connected to the side of the fixed seat 301 away from the slide 304, and a torsion cylinder 310 is installed on one side of the rotating seat 309. One end of the main shaft of the torsion cylinder 310 is connected to a hinged part, and the hinged part is rotatably connected to the rotating seat 309, and a moving rod 312 is connected to the side of the hinged part away from the slide 304. The moving rod 312 is inserted into an opening on one side of the fixed frame 2, and one end of the moving rod 312 is connected to a travel wheel 10, and the travel wheel 10 is in contact with the trajectory control mechanism 4. A spring 311 is provided on the outer sleeve of the moving rod 312, and both ends of the spring 311 are respectively connected to the corresponding positions of the fixed frame 2 and one side of the hinged part. The moving rod 312 is controlled by the trajectory control mechanism 4 to slide in the opening to adjust the relative distance with the three-jaw chuck 9.

[0054] Specifically, through the designed laser processing mechanism, when the laser quenching mechanism body 303 works to emit laser to quench and heat the gear, when the gear is thick or has a taper, the electric push rod 307 can work to shorten or extend to drive the slide 304 to move, and when the slide 304 moves, it can pull the turntable 305 to move, and the disturbance rod 306 on the rear side of the turntable 305 can slide in the disturbance plate 302 and the one side stroke groove. The disturbance rod 306 moves in the wavy stroke groove to produce left and right reciprocating motion. When the disturbance rod 306 moves, it can drive the front turntable 305 and the laser quenching mechanism body 303 to rotate with it, so that it can drive the front laser quenching mechanism to rotate left and right when it moves vertically, so as to increase the laser quenching range, which is beneficial to the sufficient quenching treatment of thicker teeth and gaps, improve the quenching uniformity, and ensure the hardness and durability of the gear after quenching.

[0055] Furthermore, when the gear to be quenched has a taper, the rotating seat 309 can be driven to rotate outside the hinge part by the torsion cylinder 310, so that the inclination direction of the front fixed seat 301 and the laser quenching mechanism body 303 can be adjusted, which is conducive to adapting the laser fitting degree of the conical surface of the bevel gear and improving the quenching adaptability.

[0056] By designing the spring 311 , when the end stroke wheel 10 is squeezed by the trajectory control mechanism 4 to drive the moving rod 312 to move, the moving rod 312 can squeeze the inner spring 311 by pulling the rear rotating seat 309 , so that the end stroke wheel 10 can be reset by using the spring 311 .

[0057] See also Figure 1-Figure 3 The trajectory control mechanism 4 includes a protective sleeve 401, which is connected to the top of the rotating box 5. A plurality of limit sleeves 402 are equidistantly connected to the inner cavity of the protective sleeve 401 along the axis, and the limit sleeve 402 is in contact with one side of the travel wheel 10. The protective sleeve 401 rotates to drive the convex and concave sides of the arc surface of the limit sleeve 402 to drive the travel wheel 10 to reciprocate.

[0058] The limiting sleeve 402 has a liquid bag inside, and multiple liquid bags are connected through the inner cavity of the protective sleeve 401, and one side of the inner cavity of the protective sleeve 401 is connected to a filling valve tube 406, and the arc of the limiting sleeve 402 is adjusted by the filling valve tube 406 to control the reciprocating stroke of the travel wheel 10.

[0059] Specifically: through the designed trajectory control mechanism 4, when the rotating box 5 rotates, the top limit sleeve 402 can squeeze the travel wheel 10 at the corresponding position. When squeezed, the travel wheel 10 can generate axial movement to drive the laser quenching mechanism body 303 at the other end to move, thereby driving the laser quenching mechanism to adjust the relative distance, and the continuously rotating rotating box 5 can realize the laser quenching mechanism body 303 for staged off-fire heating, which is beneficial to improve quenching uniformity.

[0060] Furthermore, after the liquid is injected into the liquid bag, the liquid bag can be expanded to expand the limiting sleeve 402, and the protruding curvature of the limiting sleeve 402 can be adjusted to adjust the extrusion distance of the laser quenching mechanism, which is conducive to meeting the processing needs of gaps of different depths.

[0061] See also Figure 4-Figure 5 In another embodiment, the limiting sleeve 402 has an inner arc wall, and the inner wall of the limiting sleeve 402 is fitted with an extrusion block 403. One side of the extrusion block 403 is rotatably connected to an adjusting screw rod 404 through a bearing shaft. The adjusting screw rod 404 is threadedly connected to a threaded cap embedded in the side wall of the protective sleeve 401. The extrusion block 403 is driven to extrude the limiting sleeve 402 to adjust the arc surface convex point by rotating the adjusting screw rod 404. Both ends of one side of the extrusion block 403 are connected to limiting rods 405, and the limiting rod 405 is slidably connected to the sliding hole opened in the limiting sleeve 402 at the corresponding position.

[0062] Through the designed adjustment screw 404, the adjustment screw 404 can be rotated in the threaded cap to drive the extrusion block 403 to move. The movement of the extrusion block 403 can drive the front limit sleeve 402 to expand the adjustment arc, which is convenient for independent rotation to adjust the position of the adjustment screw 404, and is conducive to realizing differentiated adjustment of the front laser quenching mechanism body 303 through multiple groups of adjustment screws 404, thereby improving quenching adaptability.

[0063] A rotary lifting mechanism 8 is provided on the top of the base 1 , and a hanging plate 6 is connected to the top of the lifting shaft of the rotary lifting mechanism 8 , and a feeding mechanism 7 is provided around the bottom of the hanging plate 6 .

[0064] The feeding mechanism 7 includes a lifting hydraulic cylinder 708, which is connected to the top of the hanging plate 6. One end of the piston rod of the lifting hydraulic cylinder 708 is connected to a feeding clamp 707. Both sides of the top of the base of the feeding clamp 707 are connected to lifting cylinders 706. The top of the piston rod of the lifting cylinder 706 is connected to a connecting rod 705, and a flip ring 701 is rotatably connected between the other ends of the connecting rods 705 on both sides. A flip cylinder 704 for driving the flip ring 701 is provided on one side of the connecting rod 705 on one side. Both sides of the inner cavity of the flip ring 701 are connected to a limiting arc ring 703 through a clamping cylinder 702. After the gear to be processed is clamped by the limiting arc ring 703, the flip ring 701 flips the gear to turn over.

[0065] Specifically: through the designed rotating lifting mechanism 8, the rotating lifting mechanism 8 can drive the top hanging plate 6 to rise and fall through the lifting part after rotating through the bottom rotating driving part, wherein the lifting part can be a hydraulic lifting part, and through the multiple sets of unloading clamps 707 arranged on the bottom side of the hanging plate 6, the unloading clamps 707 at the bottom of the hanging plate 6 can be transferred to the top of the three-jaw chuck 9 for replacement, which is conducive to continuous loading and unloading processing and improving the quenching treatment efficiency.

[0066] In addition, through the designed flipping cylinder 704 and clamping cylinder 702, the piston rod of the clamping cylinder 702 can drive the limiting arc ring 703 to clamp the outer arc surface of the gear after the piston rod of the flipping cylinder 704 is extended. When the output shaft of the flipping cylinder 704 rotates, it can drive the flipping ring 701 to rotate. The rotation of the flipping ring 701 can drive the gear clamped inside to flip over, which is beneficial to adjust the quenching surface of the gear.

[0067] In the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0068] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A heat treatment device for gear processing, comprising a base, a fixing frame connected to the top of the base, a plurality of laser heat treatment mechanisms equidistantly distributed in the inner cavity of the fixing frame, characterized in that: The laser heat treatment mechanism is configured to be movable along the radial direction of the fixed frame to adjust the distance from the gear to be treated; The top of the base is rotatably connected to a rotating box, and a trajectory control mechanism is provided on the top of the rotating box. The rotating box rotates and cooperates with the trajectory control mechanism to drive the laser heat treatment mechanism to move radially. The top of the base is connected to a three-jaw chuck through a rotating table. The three-jaw chuck is located at the axis of the rotating box. The contact position between the gear to be processed and the laser heat treatment mechanism is adjusted by rotating the three-jaw chuck. The laser heat treatment mechanism comprises a fixed seat, a slide table is provided in the fixed seat which slides along the height direction of the fixed seat, a turntable is rotatably connected to the top of the slide table through an axis, a laser quenching mechanism body is connected to one side of the turntable, and the rear side of the fixed seat is radially movably connected to one side of the fixed frame, and the turntable is configured to rotate polarization back and forth along the axis of the axis when the slide table moves, and the quenching window range is increased by rotating the polarization of the laser quenching mechanism body; A disturbance rod is connected to the side of the turntable close to the slide, an opening is provided on the top of the slide, and a disturbance plate is slidably connected in the opening, a wave-shaped travel groove for the disturbance rod to slide is provided on one side of the disturbance plate, and the disturbance plate is connected to one side of the fixed seat, and the front turntable is driven to reciprocate and rotate polarization through the reciprocating motion of the disturbance rod in the travel groove, an electric push rod is connected to the top of the slide, and the electric push rod is connected to one side of the inner cavity of the fixed seat, and guide holes are provided on both sides of the top of the slide, and guide rods are slidably connected in the guide holes, and the two ends of the guide rods are respectively connected between the two sides of the inner cavity of the fixed seat; The fixed seat is connected to a rotating seat on one side away from the slide, and a torsion cylinder is installed on one side of the rotating seat. One end of the torsion cylinder main shaft is connected to a hinge part, and the hinge part is rotatably connected to the rotating seat, and the hinge part is connected to a moving rod on the side away from the slide, and the moving rod is inserted into an opening on one side of the fixed frame, and one end of the moving rod is connected to a travel wheel, and the travel wheel is in contact with the trajectory control mechanism. A spring is arranged on the outer sleeve of the moving rod, and the two ends of the spring are respectively connected to the corresponding positions of the fixed frame and one side of the hinge part, and the moving rod is controlled by the trajectory control mechanism to slide in the opening to adjust the relative distance with the three-jaw chuck; The trajectory control mechanism includes a protective sleeve, which is connected to the top of the rotating box. The inner cavity of the protective sleeve is connected with a plurality of limit sleeves at equal distances along the axis, and the limit sleeve fits with one side of the travel wheel. The protective sleeve drives the convex side and concave side of the arc surface of the limit sleeve to drive the travel wheel to reciprocate. The limiting sleeve has a liquid capsule inside, and the multiple liquid capsules are connected through the inner cavity of the protective sleeve, and one side of the inner cavity of the protective sleeve is connected to a liquid filling valve tube, and the arc of the limiting sleeve is adjusted through the liquid filling valve tube to control the reciprocating stroke of the stroke wheel; Alternatively, the limiting sleeve has an inner arc wall, and an extrusion block is attached to the inner wall of the limiting sleeve. One side of the extrusion block is rotatably connected to an adjusting screw rod through a bearing shaft. The adjusting screw rod is threadedly connected to a threaded cap embedded in the side wall of the protective sleeve. The extrusion block is driven by the adjusting screw rod to extrude the limiting sleeve to adjust the arc surface convex point. Both ends of one side of the extrusion block are connected to limiting rods, and the limiting rods are slidably connected to the sliding holes opened in the limiting sleeve at the corresponding position.

2. The heat treatment device for gear processing according to claim 1, characterized in that: A rotating lifting mechanism is provided on the top of the base, and a hanging plate is connected to the top of the lifting shaft of the rotating lifting mechanism. Feeding mechanisms are provided around the bottom of the hanging plate. The feeding mechanism includes a lifting hydraulic cylinder. The lifting hydraulic cylinder is connected to the top of the hanging plate. One end of the lifting hydraulic cylinder piston rod is connected to a feeding clamp. Both sides of the top of the feeding clamp base are connected to the lifting cylinder. The top of the lifting cylinder piston rod is connected to a connecting rod, and a flip ring is rotatably connected between the other ends of the connecting rods on both sides. A flip cylinder for driving the flip ring is provided on one side of the connecting rod. Both sides of the inner cavity of the flip ring are connected to a limiting arc ring through a clamping cylinder. After the gear to be processed is clamped by the limiting arc ring, the flip ring flips the gear to turn over.

3. Heat treatment process for gear processing, characterized in that: The heat treatment device for gear processing according to claim 1 or 2 specifically comprises the following steps: Place the gear to be quenched in a three-jaw chuck, and move the claws of the three-jaw chuck to the outer circumference of the gear or the inner side of the gear for clamping and centering; After adjusting the distance between the multiple laser heat treatment mechanisms on the peripheral side and the three-jaw chuck through the trajectory control mechanism, the laser heat treatment mechanism is controlled to work and emit a quenching laser; The distance between the quenching laser and the gear surface is intermittently or continuously adjusted through the trajectory control mechanism. After the continuous quenching is completed, natural cooling is performed to complete the quenching or transfer to the next quenching station according to processing needs.

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