Accurate carburizing device and method applied to gearbox parts

Abstract

The invention relates to the technical field of part carburizing, in particular to an accurate carburizing device and method applied to gearbox parts. The accurate carburizing device comprises a carburizing equipment body, a fixing seat is fixedly connected to one side of the carburizing equipment body, a fixing frame is fixedly connected to the fixing seat, and a rotating seat is rotatably connected to the fixing frame; a plurality of positioning rods are arranged on one side of the rotating seat in a sliding fit mode, a material receiving seat is arranged on the fixing frame in a sliding fit mode, a transmission mechanism is arranged in the material receiving seat in a rotating connection mode, fan blades are arranged in the material receiving seat in a rotating connection mode, and a helical tooth groove processing mechanism is fixedly connected to the inner wall of the top end of the material receiving seat. When the fan blades rotate, the brush plate can be driven to move in a reciprocating mode, cleaning pretreatment is conducted on the inner wall of a tooth groove of the bevel gear, the uniformity and consistency of a carburized layer are ensured, the production efficiency is improved, manual operation is reduced, and the performance of carburized parts is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of parts carburizing, and in particular to a precise carburizing device and method applied to gearbox parts. Background Art

[0002] A precision carburizing system for transmission parts is specialized equipment used to carburize components such as gears and shafts. Carburizing is a heat treatment process that infiltrates carbon into the metal surface under high temperatures, thereby increasing surface hardness and wear resistance. The carburizing system used on transmission parts requires high precision, high efficiency, and excellent control capabilities to ensure the performance and service life of the transmission parts.

[0003] The document with prior art application number CN201610757935.3 provides a gas carburizing device, which improves the carburizing quality by providing a heat-resistant tank specially used for carburizing treatment of low-carbon steel, and adds a fan to ensure uniform temperature inside the heat-resistant tank, greatly improving the carburizing effect and ensuring the consistency of carburizing of low-carbon steel. It has a simple structure, is easy to implement, and has good application prospects.

[0004] When carburizing automobile transmission parts such as helical gears, dust and other impurities will accumulate on the inner wall of the tooth groove of the helical gear during the production or transportation process. Since the existing technology is not convenient for automatically cleaning the tooth groove of the helical gear before carburizing, the dust in the tooth groove will hinder the contact between the carbon source atmosphere and the tooth groove surface, resulting in uneven carburization or partial loss, thereby affecting the depth and hardness of the carburized layer and reducing the wear resistance and service life of the helical gear.

[0005] In summary, the prior art lacks a technology for pre-treating the tooth grooves during carburizing of helical gears. Summary of the Invention

[0006] The purpose of the present invention is to solve the shortcomings of the background technology and to propose a precise carburizing device and method for gearbox parts.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is: a precise carburizing device applied to gearbox parts, comprising a carburizing equipment main body, a fixed seat fixedly connected to one side of the carburizing equipment main body, a fixed frame fixedly connected to the fixed seat, a rotating seat rotatably connected to the fixed frame, a plurality of positioning rods slidingly provided on one side of the rotating seat, a material receiving seat slidingly provided on the fixed frame, a transmission mechanism rotatably provided in the material receiving seat, a fan blade rotatably provided in the material receiving seat, and a helical tooth groove processing mechanism fixedly connected to the inner wall of the top end of the material receiving seat.

[0008] Preferably, a motor is fixedly connected to the fixing seat, a gear shaft is fixedly connected to the output end of the motor, and a worm is fixedly connected to the top end of the gear shaft.

[0009] Preferably, a worm gear is fixedly connected to one end of the rotating seat, and the worm gear is meshed with the worm for transmission. An electric push rod A is fixedly connected to one side of the rotating seat, and a conical block is fixedly connected to the output end of the electric push rod A.

[0010] Preferably, the positioning rod is arranged in a structure that is thick at both ends and thin in the middle. A slider is fixedly connected to one end of the positioning rod, and the slider is slidingly matched with the rotating seat. A contact wheel is rotatably connected to one end of the slider, and the contact wheel is arranged in sliding contact with the outer wall of the conical block. A tension spring is fixedly connected to one side of the slider, and the other end of the tension spring is fixedly connected to the inner wall of the rotating seat.

[0011] Preferably, one end of the material receiving seat is fixedly connected to a sliding frame, and the sliding frame is slidingly matched with the inner wall of the fixed frame. A filter tube is threadedly connected to the opening at the bottom end of the material receiving seat, and one end of the sliding frame is fixedly connected to a hydraulic rod, and the hydraulic rod is fixedly connected to the inner wall of the fixed frame.

[0012] Preferably, the transmission mechanism includes a rotating rod, which is rotatably connected to the material receiving seat and the sliding frame. One end of the rotating rod located in the material receiving seat is fixedly connected to a driving wheel, and the other end of the rotating rod is fixedly connected to a universal joint. The universal joint is rotatably connected to the sliding frame, and one end of the universal joint is fixedly connected to a transmission wheel, and the transmission wheel is meshed with the gear shaft for transmission.

[0013] Preferably, the bevel groove processing mechanism includes a connecting frame, the connecting frame is fixedly connected to the inner wall of the material receiving seat, the connecting frame is rotatably connected with an adjusting frame, the adjusting frame is fixedly connected with a slide frame, the slide frame is slidably matched with a T-shaped slide, the top of the T-shaped slide is fixedly connected with a brush plate, the bottom end of the T-shaped slide passes through the inner wall of the slide frame and extends to the lower side and is fixedly connected with a slotted block, the connecting frame is fixedly connected with an electric push rod B, the output end of the electric push rod B is fixedly connected with an adjusting rack, the outer wall of the bottom end of the adjusting frame is fixedly connected with an adjusting wheel, and the adjusting wheel is meshed with the adjusting rack for transmission.

[0014] Preferably, a driven wheel is fixedly connected to the bottom end of the fan blade, and the driven wheel is meshed with the driving wheel for transmission. One end of the fan blade passes through the adjustment frame and is fixedly connected to an L-shaped rod, and the outer wall of the top end of the L-shaped rod is slidably matched with the inner wall of the slotted block.

[0015] A method for using a precision carburizing device for a gearbox part comprises the following steps:

[0016] S1. When carburizing the helical gear in the gearbox, the inner wall of the tooth groove on the helical gear needs to be cleaned. First, the helical gear is placed on the positioning rod and fixed with the positioning rod;

[0017] S2. Then adjust the height of the material receiving base so that the helical tooth groove processing mechanism can contact the tooth groove of the helical gear;

[0018] S3, then drives the rotating seat to rotate, causing the bevel gear to rotate, at this time the fan blades will be driven to rotate through the transmission mechanism to collect impurities generated during cleaning;

[0019] S4. At the same time, the fan blades will drive the helical tooth groove processing mechanism to clean the inner wall of the tooth groove of the helical gear.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. By setting up the helical tooth groove processing mechanism and fan blades, the brush plate can be driven to move back and forth while the fan blades rotate, so as to clean and pre-treat the inner wall of the tooth groove of the helical gear. At the same time, the rotatable adjustment frame allows the brush plate to rotate to an angle parallel to the tooth groove. When the helical gear is precisely carburized, the automatic cleaning and angle-adjustable brush plate cooperates with the reciprocating motion of the fan blades, which not only improves the cleaning effect of the helical gear tooth groove, but also optimizes the carburizing process, ensures the uniformity and consistency of the carburized layer, improves production efficiency, reduces manual operation, improves the performance of carburized parts, and has strong adaptability and operability, providing effective technical support for precise carburizing;

[0022] 2. By setting up a transmission mechanism, when the worm drives the helical gear to rotate, it can synchronously drive the fan blades to rotate and collect impurities. At the same time, it can also drive the helical tooth groove processing mechanism. Through the automatic cleaning and impurity collection mechanism, it not only improves the cleaning efficiency and carburizing effect, but also further improves production efficiency, reduces pollution, and optimizes the production process. It has many advantages such as high efficiency, stability, and environmental protection.

[0023] 3. The tapered block drives multiple positioning rods to rest against the shaft hole of the helical gear, achieving great adaptability and precise positioning function, which can ensure that helical gears of different sizes are positioned stably and accurately during the processing process, thereby improving production efficiency, product consistency and process accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of a precise carburizing device applied to gearbox parts according to the present invention;

[0025] Figure 2This is a partial structural schematic diagram of a precise carburizing device applied to a gearbox part according to the present invention;

[0026] Figure 3 This is a schematic diagram of the structure of a fixing seat of a precision carburizing device applied to a gearbox part of the present invention;

[0027] Figure 4 This is a partial cross-sectional schematic diagram of the structure of a rotating seat and other parts of a precision carburizing device used in a gearbox part of the present invention;

[0028] Figure 5 This is a schematic diagram of the positioning rod structure of a precision carburizing device for a gearbox part according to the present invention;

[0029] Figure 6 This is a partial cross-sectional expanded schematic diagram of a material receiving seat and other structures of a precision carburizing device for gearbox parts of the present invention;

[0030] Figure 7 This is a schematic diagram of the structure of a helical tooth groove processing mechanism of a precision carburizing device for a gearbox part according to the present invention;

[0031] Figure 8 This is a schematic diagram of the expanded blade structure of a precision carburizing device used in gearbox parts of the present invention.

[0032] The following are marked in the figure: 1. Carburizing equipment body; 2. Fixed seat; 3. Fixed frame; 4. Rotating seat; 5. Positioning rod; 6. Material receiving seat; 7. Transmission mechanism; 8. Fan blade; 9. Bevel tooth processing mechanism; 201. Motor; 202. Gear shaft; 203. Worm; 401. Worm wheel; 402. Electric push rod A; 403. Conical block; 501. Slider; 502. Contact wheel; 503. Tension spring; 601. Slider Moving frame; 602, filter tube; 603, hydraulic rod; 701, rotating rod; 702, driving wheel; 703, universal joint; 704, transmission wheel; 901, connecting frame; 902, adjusting frame; 903, slide frame; 904, T-shaped slide; 905, brush plate; 906, slotted block; 907, electric push rod B; 908, adjusting rack; 909, adjusting wheel; 801, driven wheel; 802, L-shaped rod. DETAILED DESCRIPTION

[0033] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are merely examples, and those skilled in the art may conceive of other obvious variations.

[0034] like Figures 1-8The device and method for precise carburizing of transmission parts shown in the figure include a carburizing equipment body 1, a fixed seat 2 fixedly connected to one side of the carburizing equipment body 1, a fixed frame 3 fixedly connected to the fixed seat 2, a rotating seat 4 rotatably connected to the fixed frame 3, a plurality of positioning rods 5 slidingly provided on one side of the rotating seat 4, a material receiving seat 6 slidingly provided on the fixed frame 3, a transmission mechanism 7 rotatably provided in the material receiving seat 6, a fan blade 8 rotatably provided in the material receiving seat 6, and a bevel tooth groove processing mechanism 9 fixedly provided on the inner wall of the top of the material receiving seat 6. Nitrogen and methanol mass flow meters are added to the carburizing equipment body 1 to accurately control the carbon potential and CO%, CO2% content in the furnace. The process adopts multi-stage carbon potential control, precise carburizing, and a perfect hardness gradient to increase the service life of the product.

[0035] like Figure 3 As shown, a motor 201 is fixedly connected to the fixing seat 2 , a gear shaft 202 is fixedly connected to the output end of the motor 201 , and a worm 203 is fixedly connected to the top end of the gear shaft 202 .

[0036] like Figure 4 As shown, a worm gear 401 is fixedly connected to one end of the rotating seat 4, and the worm gear 401 is meshed with the worm 203 for transmission. An electric push rod A402 is fixedly connected to one side of the rotating seat 4, and a conical block 403 is fixedly connected to the output end of the electric push rod A402.

[0037] like Figure 5 As shown, the positioning rod 5 has a structure that is thick at both ends and thin in the middle. A slider 501 is fixedly connected to one end of the positioning rod 5. The slider 501 is slidably engaged with the rotating seat 4. A contact wheel 502 is rotatably connected to one end of the slider 501. The contact wheel 502 is slidably engaged with the outer wall of the tapered block 403. A tension spring 503 is fixedly connected to one side of the slider 501. The other end of the tension spring 503 is fixedly connected to the inner wall of the rotating seat 4. The tapered block 403 is driven to move by the electric push rod A402. At this time, the inclined surface of the tapered block 403 contacts and squeezes the contact wheel 502, causing the contact wheel 502 to drive the positioning rod 5 connected to the slider 501 to move, so that the positioning rod 5 can rest within the shaft hole of the helical gear.

[0038] like Figure 6 As shown, one end of the material receiving seat 6 is fixedly connected to a sliding frame 601, and the sliding frame 601 is slidably matched with the inner wall of the fixed frame 3. A filter tube 602 is threadedly connected to the opening at the bottom end of the material receiving seat 6, and one end of the sliding frame 601 is fixedly connected to a hydraulic rod 603, and the hydraulic rod 603 is fixedly connected to the inner wall of the fixed frame 3.

[0039] like Figure 6As shown, the transmission mechanism 7 includes a rotating rod 701, which is rotatably connected to the material receiving seat 6 and the sliding frame 601. One end of the rotating rod 701 located in the material receiving seat 6 is fixedly connected to a driving wheel 702, and the other end of the rotating rod 701 is fixedly connected to a universal joint 703. The universal joint 703 is rotatably connected to the sliding frame 601. One end of the universal joint 703 is fixedly connected to a transmission wheel 704, which is meshed with the gear shaft 202 for transmission. The gear shaft 202 drives the meshed transmission wheel 704 to rotate, so that the transmission wheel 704 can drive the rotating rod 701 connected to the universal joint 703 to rotate, so that the rotating rod 701 can drive the connected driving wheel 702 to rotate, and at this time the driving wheel 702 drives the fan blade 8 connected to the driven wheel 801 to rotate.

[0040] like Figure 7 As shown, the bevel groove processing mechanism 9 includes a connecting frame 901, which is fixedly connected to the inner wall of the material receiving seat 6, and an adjusting frame 902 is rotatably connected to the connecting frame 901, and a slide frame 903 is fixedly connected to the adjusting frame 902, and a T-shaped slide 904 is slidably provided on the slide frame 903, and a brush plate 905 is fixedly connected to the top of the T-shaped slide 904, and the bottom end of the T-shaped slide 904 passes through the inner wall of the slide frame 903 and extends to the lower side and is fixedly connected to a slotted block 906, and an electric push rod B907 is fixedly connected to the connecting frame 901, and an adjusting rack 908 is fixedly connected to the output end of the electric push rod B907, and an adjusting wheel 909 is fixedly connected to the outer wall of the bottom end of the adjusting frame 902, and the adjusting wheel 909 is meshed with the adjusting rack 908 for transmission. The L-shaped rod 802 can slide on the inner wall of the slotted block 906, thereby driving the T-shaped slide 904 connected to the slotted block 906 to slide in the slide frame 903, so that the brush plate 905 connected to the T-shaped slide 904 moves back and forth.

[0041] By setting up the bevel tooth groove processing mechanism 9 and the fan blade 8, the fan blade 8 can drive the brush plate 905 to move back and forth while rotating, and the inner wall of the tooth groove of the bevel gear is cleaned and pre-treated. At the same time, the rotatable adjustment frame 902 allows the brush plate 905 to rotate to an angle parallel to the tooth groove. When the bevel gear is precisely carburized, the automatic cleaning and angle-adjustable brush plate 905 cooperates with the reciprocating motion of the fan blade 8, which not only improves the cleaning effect of the bevel gear tooth groove, but also optimizes the carburizing process, ensures the uniformity and consistency of the carburized layer, improves production efficiency, reduces manual operation, improves the performance of carburized parts, and has strong adaptability and operability, providing effective technical guarantee for precise carburizing.

[0042] like Figure 8As shown, the bottom end of the fan blade 8 is fixedly connected to a driven wheel 801, which meshes with the driving wheel 702 for transmission. One end of the fan blade 8 passes through the adjustment frame 902 and is fixedly connected to an L-shaped rod 802. The outer wall of the top of the L-shaped rod 802 is slidably engaged with the inner wall of the slotted block 906. The fan blade 8 drives the connected L-shaped rod 802 to rotate, allowing the L-shaped rod 802 to slide on the inner wall of the slotted block 906.

[0043] A method for using a precision carburizing device for a gearbox part comprises the following steps:

[0044] S1. When the helical gear in the gearbox needs to be carburized, the inner wall of the tooth groove on the helical gear needs to be cleaned. First, the helical gear is placed on the positioning rod 5 and fixed with the positioning rod 5;

[0045] S2. Then adjust the height of the material receiving base 6 so that the helical tooth groove processing mechanism 9 can contact the tooth groove of the helical gear;

[0046] S3, then drives the rotating seat 4 to rotate, causing the bevel gear to rotate, and at this time the fan blades 8 are driven to rotate through the transmission mechanism 7 to collect impurities generated during cleaning;

[0047] S4. At the same time, the fan blades 8 drive the helical tooth groove processing mechanism 9 to clean the inner wall of the tooth groove of the helical gear.

[0048] Working principle: Before the helical gear needs to be carburized, align its shaft hole with the positioning rod 5 and put it on the outside of the positioning rod 5. Then use the electric push rod A402 to drive the tapered block 403 to move. At this time, the inclined surface of the tapered block 403 will contact and squeeze the contact wheel 502, so that the contact wheel 502 drives the positioning rod 5 connected to the slider 501 to move, so that the positioning rod 5 can be against the shaft hole of the helical gear. At this time, the positioning rod 5 has a structure with thick ends and thin middle, which makes the contact wheel 502 move toward the middle of the positioning rod 5.

[0049] Then, the electric push rod B907 is used to drive the adjustment rack 908 to move, so that the adjustment rack 908 can drive the adjustment frame 902 connected to the adjustment wheel 909 to rotate, so that the brush plate 905 remains parallel to the tooth groove of the helical gear. Then, the hydraulic rod 603 is used to drive the material receiving seat 6 connected to the sliding frame 601 to move upward, so that the brush plate 905 can contact the inner wall of the tooth groove of the helical gear.

[0050] Then, the motor 201 is used to drive the worm 203 connected to the gear shaft 202 to rotate. At this time, the worm 203 drives the rotating seat 4 connected to the worm wheel 401 to rotate, so that the bevel gear on the positioning rod 5 rotates. Then, the gear shaft 202 drives the meshing transmission wheel 704 to rotate, so that the transmission wheel 704 can drive the rotating rod 701 connected to the universal joint 703 to rotate, so that the rotating rod 701 can drive the connected driving wheel 702 to rotate. At this time, the driving wheel 702 drives the fan blade 8 connected to the driven wheel 801 to rotate;

[0051] Then the fan blade 8 drives the connected L-shaped rod 802 to rotate, so that the L-shaped rod 802 can slide on the inner wall of the slotted block 906, thereby driving the T-shaped slide 904 connected to the slotted block 906 to slide in the slide frame 903, so that the brush plate 905 connected to the T-shaped slide 904 moves back and forth, thereby cleaning the inner wall of the tooth groove of the helical gear. At this time, the rotating fan blade 8 can suck the impurities generated during cleaning into the filter tube 602 for filtration. After the helical gear is processed, it is placed in the carburizing equipment body 1 for carburizing treatment;

[0052] Multi-stage carburizing can effectively control product deformation:

[0053] The first stage: pre-oxidation at 450℃ for 60 minutes, effectively removing residual grease on the surface of parts, further improving the surface cleanliness of parts, eliminating the influence of machining cutting fluids and grease on heat treatment quality, and reducing thermal stress deformation;

[0054] The second stage: soaking at 830℃ for 30min. Only nitrogen and methanol are introduced into this stage, so that the product can achieve step-by-step temperature increase in the furnace, which can effectively reduce dimensional deformation during the carburizing process.

[0055] The third stage: 900-930℃, 1.2cp strong carburizing for 120min. In this stage, nitrogen, methanol and propane are introduced through the mass flow meter to achieve precise control of carbon potential carburizing. The product surface quickly absorbs carbon atoms and forms accumulation.

[0056] The fourth stage: 900-930℃, 0.8cp diffusion for 80min. Nitrogen, methanol, propane and air are introduced into the product to diffuse carbon atoms to the subsurface, so that there is a certain gradient of carbon atoms from the surface to the inside.

[0057] The fifth stage: 900-930℃, 1.15cp strong carburizing for 120min. In this stage, nitrogen, methanol and propane are introduced through the mass flow meter to achieve carburizing. The surface of the product quickly absorbs carbon atoms again and forms a secondary accumulation.

[0058] The sixth stage: 900-930℃, 0.75cp diffusion for 80min. Nitrogen, methanol, propane and air are introduced into this stage to diffuse carbon atoms to the subsurface of the product, forming a perfect gradient of carbon atoms from the surface to the inside.

[0059] The seventh stage: 820-840℃, 0.7cp holding for 30min quenching. This stage completes the quenching process by lowering the temperature, promotes the transformation of the structure, and obtains more quenched martensite structure while reducing deformation.

[0060] The eighth stage: tempering at 170-180℃ for 180min to eliminate the stress formed by quenching, complete the final organizational transformation, and obtain the required surface hardness, hardened layer and organization.

[0061] It should be noted that, in this document, relational terms such as first and second, etc., are used only 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 "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0062] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A precise carburizing device for use in transmission parts, comprising a carburizing device body (1), characterized in that: A fixed seat (2) is fixedly connected to one side of the carburizing equipment body (1), a fixed frame (3) is fixedly connected to the fixed seat (2), a rotating seat (4) is rotatably connected to the fixed frame (3), a plurality of positioning rods (5) are slidably provided on one side of the rotating seat (4), a material receiving seat (6) is slidably provided on the fixed frame (3), a transmission mechanism (7) is rotatably provided in the material receiving seat (6), a fan blade (8) is rotatably provided in the material receiving seat (6), and a bevel tooth groove processing mechanism (9) is fixedly connected to the inner wall of the top end of the material receiving seat (6).

2. The precise carburizing device for transmission parts according to claim 1, characterized in that: A motor (201) is fixedly connected to the fixing seat (2), a gear shaft (202) is fixedly connected to the output end of the motor (201), and a worm (203) is fixedly connected to the top end of the gear shaft (202).

3. The precise carburizing device for transmission parts according to claim 2, characterized in that: A worm gear (401) is fixedly connected to one end of the rotating seat (4), and the worm gear (401) is meshed with the worm (203) for transmission. An electric push rod A (402) is fixedly connected to one side of the rotating seat (4), and a conical block (403) is fixedly connected to the output end of the electric push rod A (402).

4. The precise carburizing device for transmission parts according to claim 3, characterized in that: The positioning rod (5) is configured to be thick at both ends and thin in the middle. A slider (501) is fixedly connected to one end of the positioning rod (5), and the slider (501) is slidably matched with the rotating seat (4). A contact wheel (502) is rotatably connected to one end of the slider (501), and the contact wheel (502) is in sliding contact with the outer wall of the conical block (403). A tension spring (503) is fixedly connected to one side of the slider (501), and the other end of the tension spring (503) is fixedly connected to the inner wall of the rotating seat (4).

5. The precise carburizing device for transmission parts according to claim 4, characterized in that: One end of the material receiving seat (6) is fixedly connected to a sliding frame (601), and the sliding frame (601) is slidably matched with the inner wall of the fixed frame (3). A filter tube (602) is threadedly connected to the opening at the bottom end of the material receiving seat (6), and one end of the sliding frame (601) is fixedly connected to a hydraulic rod (603), and the hydraulic rod (603) is fixedly connected to the inner wall of the fixed frame (3).

6. The precise carburizing device for transmission parts according to claim 5, characterized in that: The transmission mechanism (7) includes a rotating rod (701), the rotating rod (701) is rotatably connected to the material receiving seat (6) and the sliding frame (601), one end of the rotating rod (701) located in the material receiving seat (6) is fixedly connected to a driving wheel (702), the other end of the rotating rod (701) is fixedly connected to a universal joint (703), the universal joint (703) is rotatably connected to the sliding frame (601), one end of the universal joint (703) is fixedly connected to a transmission wheel (704), and the transmission wheel (704) is meshed with the gear shaft (202) for transmission.

7. The precise carburizing device for transmission parts according to claim 6, characterized in that: The helical tooth groove processing mechanism (9) includes a connecting frame (901), the connecting frame (901) is fixedly connected to the inner wall of the material receiving seat (6), the connecting frame (901) is rotatably connected to an adjusting frame (902), the adjusting frame (902) is fixedly connected to a chute frame (903), the chute frame (903) is slidably matched with a T-shaped slide (904), and the top of the T-shaped slide (904) is fixedly connected to a brush plate (905). The bottom end of the T-shaped slide bar (904) passes through the inner wall of the slide slot frame (903) and extends to the lower side and is fixedly connected with a slotted block (906). The connecting frame (901) is fixedly connected with an electric push rod B (907). The output end of the electric push rod B (907) is fixedly connected with an adjustment rack (908). The outer wall of the bottom end of the adjustment frame (902) is fixedly connected with an adjustment wheel (909). The adjustment wheel (909) is meshed with the adjustment rack (908) for transmission.

8. The precise carburizing device for transmission parts according to claim 7, characterized in that: The bottom end of the fan blade (8) is fixedly connected to a driven wheel (801), and the driven wheel (801) is meshed with the driving wheel (702) for transmission. One end of the fan blade (8) passes through the adjustment frame (902) and is fixedly connected to an L-shaped rod (802), and the outer wall of the top end of the L-shaped rod (802) is slidably matched with the inner wall of the slotted block (906).

9. A method for using a precision carburizing device for a gearbox part, using the precision carburizing device for a gearbox part according to any one of claims 1 to 8, characterized in that: The specific steps include: S1. When the helical gear in the gearbox needs to be carburized, the inner wall of the tooth groove on the helical gear needs to be cleaned. First, the helical gear is placed on the positioning rod (5) and fixed with the positioning rod (5); S2, then adjusting the height of the material receiving base (6) so that the helical tooth groove processing mechanism (9) can contact the tooth groove of the helical gear; S3, then drives the rotating seat (4) to rotate, causing the bevel gear to rotate, and at this time, the fan blade (8) is driven to rotate through the transmission mechanism (7) to collect impurities generated during cleaning; S4. At the same time, the fan blade (8) drives the helical tooth groove processing mechanism (9) to clean the inner wall of the tooth groove of the helical gear.

Images