Planetary gear forming device

Abstract

The utility model provides a planetary gear forming device. The planetary gear forming device comprises a base, a first forming piece, a driving assembly and a plurality of second forming pieces. The base is provided with a vertical working surface; a first forming part is fixedly arranged on the working surface and is provided with a driving wheel, and a rotating shaft of the driving wheel is perpendicular to the working surface; the driving assembly is in transmission connection with the driving wheel; the plurality of second forming parts are respectively provided with a driven wheel, and the driving wheel and the plurality of driven wheels are enclosed to form an extrusion space for blank forming; the driven wheels are arranged on the working face in a sliding mode along a preset path parallel to the working face. According to the planetary gear forming device, a heated blank is placed in the extrusion space, the driving wheel drives the blank to rotate, the driven wheels rotate along with the blank when the blank rotates, continuous rolling of the blank is guaranteed, the driven wheels can continuously extrude towards the center of the blank, and the driven wheels are matched with the driving wheel to extrude and form the blank.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical manufacturing, and in particular relates to a planetary gear forming device. Background Art

[0002] Planetary reducer is a power transmission mechanism that uses a gear speed converter to reduce the number of revolutions of the motor to the desired number of revolutions and obtain a larger torque. The gear with fewer teeth on the transmission shaft of the planetary reducer meshes with the large gear on the output shaft to achieve the purpose of deceleration. Its unique deceleration effect makes planetary reducers widely used in the coal mining machinery and equipment manufacturing industry.

[0003] The planetary reducer has planetary gears. During the manufacturing process, the manufacturing workload of the planetary gears is relatively large. The conventional forging method is to turn the forging into a gear blank, then roll the gears, and then finish it after heat treatment. A large amount of iron filings will be generated in the gear hobbing step. The recycling of the iron filings is cumbersome and can easily cause environmental pollution. It may also splash onto the processing equipment, affecting the use of the processing equipment and increasing maintenance costs. Utility Model Content

[0004] The embodiment of the utility model provides a planetary gear forming device, aiming to solve the technical problem in the prior art that iron filings are easily generated during forging of planetary gears, causing environmental pollution and increasing workload.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a planetary gear forming device, comprising:

[0006] A base having a vertically disposed working surface;

[0007] A first molded part is fixedly arranged on the working surface, wherein the first molded part has a driving wheel, and a rotating shaft of the driving wheel is perpendicular to the working surface;

[0008] A driving assembly, drivingly connected to the driving wheel; and

[0009] A plurality of second forming parts each have a driven wheel, the rotating shaft of the driven wheel is perpendicular to the working surface, the driving wheel and the plurality of driven wheels together form an extrusion space for blank forming; the driven wheels are slidably arranged on the working surface along a preset path parallel to the working surface to adjust the size of the extrusion space.

[0010] In a possible implementation, the second molded part further includes a movable shaft, the movable shaft is perpendicular to the working surface, one end of the movable shaft is slidably disposed on the working surface along the preset path, and the other end of the movable shaft is coaxially connected to the driven wheel.

[0011] In a possible implementation, a plurality of chutes are provided on the working surface, and the chutes correspond to the second forming members one by one. A telescopic member is installed in each chute, and the telescopic end of the telescopic member is connected to the moving shaft to drive the moving shaft to move along the preset path.

[0012] In a possible implementation, the planetary gear forming device further includes a cooling component, and the cooling component performs heat transfer with the driving wheel and the driven wheel respectively.

[0013] In a possible implementation, the cooling component includes a cooling tank, a plurality of water inlet pipes, a plurality of jackets, and a plurality of water outlet pipes that are sequentially connected in the direction of the cooling water flow. The jackets are respectively sleeved on the outer peripheries of the corresponding first forming members or the corresponding second forming members. The water inlet pipes, the jackets, and the water outlet pipes are provided in plurality and correspond to the driving wheel and the driven wheel one by one. The water inlet pipes, the jackets, and the water outlet pipes form a cooling branch, and a plurality of cooling branches are arranged in parallel.

[0014] In a possible implementation, the first forming member further includes a fixed shaft, one end of the fixed shaft is fixed to the working surface, and the other end of the fixed shaft is coaxially connected to the driving wheel.

[0015] In a possible implementation, the driving component includes a driving motor, a transmission wheel, and a synchronous belt. The transmission wheel is provided at the output end of the driving motor, and the rotation axis of the transmission wheel is parallel to the rotation axis of the driving wheel;

[0016] The first forming member further includes a transmission belt wheel sleeved on the fixed shaft, and the transmission belt wheel and the transmission wheel are connected by a synchronous belt for transmission.

[0017] In a possible implementation, a positioning component is installed on the chute. The positioning component includes a travel switch and a stop block. The travel switch is provided on the moving shaft and is communicatively connected to the telescopic member. The stop block is provided on the chute and is located on the side of the corresponding travel switch away from the telescopic member; when the moving shaft moves to the maximum processing position, the stop block triggers the travel switch.

[0018] In a possible implementation, the driving component further includes a frequency converter, and the frequency converter is electrically connected to the driving motor.

[0019] In a possible implementation, alloy teeth are respectively provided on the outer periphery of the driven wheel and the outer periphery of the driving wheel, and the alloy teeth are abutted against the workpiece to process the workpiece.

[0020] Compared with the prior art, the planetary gear forming device provided by the present utility model replaces the forming equipment of the planetary gear. The driving wheel and multiple driven wheels form an extrusion space. The heated blank is placed into the extrusion space. The driving wheel drives the blank to rotate. When the blank rotates, the driven wheels rotate with the blank to ensure the continuous rolling of the blank. The multiple driven wheels will continuously extrude towards the center of the blank along a preset path, and cooperate with the driving wheel to extrude and form the blank. The shape of the blank is changed through rolling in the whole process without cutting, generating less iron filings, reducing the impact on the environment. The small amount of iron filings generated can fall below the extrusion space, and the falling area is concentrated, which is convenient for collection, reducing the workload of the staff; only by moving the second forming part can the blank be taken and placed, with simple operation and reduced workload of the staff. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is the front view structural schematic diagram of the planetary gear forming device provided by the embodiment of the present utility model;

[0023] Figure 2 It is Figure 1 the assembly schematic diagram of the driving component and the first forming part in

[0024] Figure 3 It is Figure 1 the structural schematic diagram from the A-A perspective in

[0025] Figure 4 It is Figure 1 the assembly schematic diagram of the second forming part and the cooling component adopted in

[0026] Explanation of the Reference Numerals in the Drawings:

[0027] 1. Base; 11. Working surface; 12. Slideway; 13. Telescopic member;

[0028] 2. First forming part; 21. Driving wheel; 22. Fixed shaft; 23. Belt pulley;

[0029] 3. Driving component; 31. Driving motor; 32. Driving wheel; 33. Synchronous belt; 34. Frequency converter;

[0030] 4. Second forming part; 41. Driven wheel; 42. Moving shaft;

[0031] 5. Cooling component; 51. Cooling box; 52. Water inlet pipe; 53. Jacket; 54. Water outlet pipe;

[0032] 6. Positioning component; 61. Stopper; 62. Travel switch;

[0033] 7. Workpiece blank. Detailed implementation manner

[0034] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0035] It should be noted that the orientation or positional relationship indicated by terms such as "length", "width", "height", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the utility model.

[0036] It should also be noted that, unless otherwise clearly specified and defined, terms such as "installation", "connection", "connection", "fixation", "setting", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements. 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.

[0037] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In addition, the meanings of "multiple" and "several" are two or more, unless otherwise clearly and specifically defined.

[0038] Please refer to Figures 1 to 4, the planetary gear forming device provided by the present utility model will now be described. The planetary gear forming device includes a base 1, a first forming member 2, a driving assembly 3, and a plurality of second forming members 4. The base 1 has a working surface 11 arranged vertically; the first forming member 2 is fixed on the working surface 11, and the first forming member 2 has a driving wheel 21, and the rotating shaft of the driving wheel 21 is perpendicular to the working surface 11; the driving assembly 3 is in transmission connection with the driving wheel 21; each of the plurality of second forming members 4 has a driven wheel 41, and the rotating shaft of the driven wheel 41 is perpendicular to the working surface 11, and the driving wheel 21 and the plurality of driven wheels 41 enclose an extrusion space for forming a blank 7; the driven wheels 41 are respectively arranged on the working surface 11 slidably along a preset path parallel to the working surface 11 to adjust the size of the extrusion space.

[0039] It should be noted that the plurality of driven wheels 41 and the driving wheel 21 are evenly arranged around the blank 7, and the center of the blank 7 coincides with the center of the extrusion space.

[0040] It should be noted that each second forming member 4 has a preset path, and the preset path refers to a path that moves in a direction close to or away from the center of the blank. The plurality of second forming members 4 approach the blank 7 along the corresponding preset paths. The preset paths are referred to Figure 2 to the arrows.

[0041] It should be noted that the blank is preheated before being placed in the extrusion space, and is heated to 950°C - 1000°C by an intermediate frequency induction coil.

[0042] During specific implementation, the driving wheel 21 and the plurality of driven wheels 41 extrude the tooth forming area of the blank 7, and this application is applicable to rough machining of the tooth shape of planetary gears.

[0043] During specific implementation, there are two second forming members 4, and the two second forming members 4 and the first forming member 2 enclose an equilateral triangle extrusion space, and the center of the blank 7 coincides with the center of the extrusion space.

[0044] Compared with the prior art, the planetary gear forming device provided in this embodiment replaces the forming equipment of the planetary gear. The driving wheel 21 and the plurality of driven wheels 41 form an extrusion space. The heated blank 7 is placed in the extrusion space. The driving wheel 21 drives the blank 7 to rotate. When the blank 7 rotates, the driven wheels 41 rotate with the blank 7 to ensure the continuous rolling of the blank 7. The plurality of driven wheels 41 will continuously extrude towards the center of the blank 7, and cooperate with the driving wheel 21 to extrude and form the blank 7. The shape of the blank 7 is changed by rolling throughout the process without cutting, generating less iron filings, reducing the impact on the environment. The small amount of iron filings generated can fall below the extrusion space, and the falling area is concentrated, facilitating collection, reducing the workload of the staff; taking and placing the blank 7 only requires moving the second forming member 4, with simple operation and reduced workload of the staff.

[0045] In some embodiments, refer to Figure 1 and Figure 2 , the second forming member 4 further includes a moving shaft 42. The moving shaft 42 is perpendicular to the working surface 11. One end of the moving shaft 42 is slidably disposed on the working surface 11 along a preset path, and the other end of the moving shaft 42 is coaxially connected with a driven wheel 41. The moving shaft 42 can drive the position change of the driven wheel 41 so that the driven wheel 41 can extrude the blank 7. The driven wheel 41 can rotate at one end of the moving shaft 42 to realize the rolling operation on the blank 7.

[0046] Specifically, the moving path of the moving shaft 42 is fixed, and the moving shaft 42 moves along the direction close to or away from the center of the blank 7.

[0047] In some embodiments, refer to Figure 1 , a plurality of sliding grooves 12 are provided on the working surface 11. The sliding grooves 12 correspond to the second forming members 4 one by one. A telescopic member 13 is installed in the sliding groove 12, and the telescopic end of the telescopic member 13 is connected to the moving shaft 42 to drive the moving shaft 42 to move along a preset path. The sliding groove 12 can guide the movement of the second forming member 4, so that the formed extrusion space regularly expands or contracts, and the center of the blank 7 is always at the center of the extrusion space, ensuring the tooth forming quality of the blank 7. The telescopic member 13 can push the moving shaft 42 to move and control the start and stop of the moving shaft 42 to adjust the position of the driven wheel 41, which is beneficial to the tooth forming of the blank 7.

[0048] Specifically, the length direction of the sliding groove 12 is parallel to the telescopic direction of the telescopic end of the telescopic member 13.

[0049] Specifically, the telescopic member 13 adopts a hydraulic cylinder. The movement of the hydraulic cylinder is stable, there is no transmission gap, no impact and vibration, which ensures the rotation effect of the driven wheel 41 during the movement, and thus ensures the forming quality of the blank 7.

[0050] Specifically, the pressure of the hydraulic cylinder is adjusted to 200T - 300T.

[0051] In some embodiments, refer to Figure 4 , the planetary gear forming device further includes a cooling component 5. The cooling component 5 performs heat transfer with the driving wheel 21 and the driven wheel 41 respectively. The cooling component 5 can cool the driving wheel 21 and the driven wheel 41, avoiding damage to the driving wheel 21 and the driven wheel 41 caused by the too high temperature of the blank 7, affecting the forming of the blank 7, and increasing the maintenance cost.

[0052] In some embodiments, refer to Figure 4, the cooling component 5 includes a cooling box 51, a plurality of water inlet pipes 52, a plurality of jackets 53, and a plurality of water outlet pipes 54 that are connected in sequence along the flowing direction of the cooling water. The jackets 53 are respectively sleeved on the outer perimeters of the corresponding first forming members 2 or the corresponding second forming members 4; the jackets 53 are respectively sleeved on the outer perimeters of the corresponding first forming members 2 or the corresponding second forming members 4. There are a plurality of water inlet pipes 52, jackets 53, and water outlet pipes 54, and they are in one-to-one correspondence with the driving wheel 21 and the driven wheel 41. The water inlet pipes 52, jackets 53, and water outlet pipes 54 form a cooling branch, and a plurality of cooling branches are arranged in parallel.

[0053] During specific implementation, the jackets 53 are respectively sleeved on the outer perimeters of the moving shaft 42 and the fixed shaft 22, and perform heat exchange with the moving shaft 42 and the fixed shaft 22. The fixed shaft 22 is connected to the driving wheel 21, and the heat generated by the driving wheel 21 can be transferred to the fixed shaft 21 and perform heat exchange with the corresponding jacket 53 to achieve cooling of the driving wheel 21. The driven wheel 41 is connected to the moving shaft 42, and the heat of the driven wheel 41 is transferred to the moving shaft 42 and performs heat exchange with the corresponding jacket 53 to reduce the heat of the driven wheel 41.

[0054] This embodiment provides a specific structure of the cooling component 5. The jackets 53 are respectively sleeved on the outer perimeters of the moving shaft 41 or the fixed shaft 21 and form cavities. The cooling water enters the cavities from the water inlet pipes 52, and after heat exchange with the moving shaft 41 or the fixed shaft 21, it enters the cooling box 51 from the water outlet pipes 53, forming a water cycle. Through the continuous flow of water, the heat of the moving shaft 41 and the fixed shaft 21 is transported to avoid damage to the first forming member 2 and the second forming member 4 due to excessive temperature.

[0055] As another embodiment of the cooling component 5, the cooling component 5 includes a cooling box 51, a plurality of water inlet pipes 52, and a plurality of water outlet pipes 54 that are connected in sequence along the flowing direction of the water. Water passing channels are respectively formed on the moving shaft 41 and the fixed shaft 21. The water outlet end of the water inlet pipe 52 is communicated with the water inlet end of the water passing channel, and the water inlet end of the water outlet pipe 52 is communicated with the water outlet end of the water passing channel. Water flows inside the moving shaft 41 and the fixed shaft 21, increasing the contact area and improving the heat exchange efficiency. As long as the first forming member 2 and the second forming member 4 can be cooled, it will not be elaborated here.

[0056] In some embodiments, refer to Figure 1 and Figure 2 , the first forming member 2 further includes a fixed shaft 22. One end of the fixed shaft 22 is fixed to the working surface 11, and the other end of the fixed shaft 22 is coaxially connected with a driving wheel 21. The fixed shaft 22 can fix the position of the driving wheel 21, prevent the driving wheel 21 from moving, and ensure that the blank 7 and the driving wheel 21 are always in contact.

[0057] In some embodiments, refer to Figure 2, the driving assembly 3 includes a driving motor 31, a transmission wheel 32 and a synchronous belt 33. The transmission wheel 32 is arranged at the output end of the driving motor 31, and the rotating shaft of the transmission wheel 32 is parallel to the rotating shaft of the driving wheel 21; the first forming member 2 further includes a transmission pulley 23 sleeved on the fixed shaft 22, and the transmission pulley 23 and the transmission wheel 32 are drivingly connected through the synchronous belt 33. The output end of the driving motor 31 drives the transmission wheel 32 to rotate, and the transmission wheel 32 and the transmission pulley 23 rotate synchronously through the synchronous belt 33 to drive the driving wheel 21 to move. The driving wheel 21 and the transmission pulley 23 are relatively fixed, so that the driving motor 31 can drive the driving wheel 21 to move.

[0058] During specific implementation, the output end of the driving motor 31 and the driving wheel 21 are located on the same side, so that both ends of the synchronous belt 33 are respectively sleeved on the transmission wheel 32 and the transmission pulley 23, so that the transmission wheel 32 and the transmission pulley 23 rotate synchronously.

[0059] In some embodiments, refer to Figure 3 , a positioning assembly 6 is installed on the slideway 12. The positioning assembly 6 includes a travel switch 62 and a stop block 61. The travel switch 62 is arranged on the moving shaft 42 and is communicatively connected with the telescopic member 13. The stop block 61 is arranged on the slideway 12 and is located on the side of the corresponding travel switch 62 away from the telescopic member 13; when the moving shaft 42 moves to the maximum machining position, the stop block 61 triggers the travel switch. The stop block 61 can limit the maximum movement amount of the moving shaft 42. By contacting the travel switch 62 and the stop block 61, the travel switch 62 timely feeds back a signal to the hydraulic cylinder to limit the displacement of the telescopic member 13 and avoid the over-movement of the driven wheel 41 affecting the forming quality of the workpiece 7.

[0060] It should be noted that the maximum machining position refers to the maximum depth of the driven wheel 41 machining the workpiece 7. At the maximum machining position, the tooth-shaped groove of the workpiece 7 can be formed.

[0061] During specific implementation, the travel switch 62 can be a touch sensor.

[0062] As another embodiment of the positioning assembly 6, the positioning assembly 6 also adopts a laser sensor and a laser receiver. The laser receiver is communicatively connected with the hydraulic cylinder. The laser sensor is installed on the working surface 11 at a certain angle. The laser emitted by the laser sensor is perpendicular to the length direction of the slideway 12, and a laser receiver is correspondingly arranged at the other end. When the moving shaft 41 moves to block the laser, the laser receiver sends a signal to the hydraulic cylinder, and the hydraulic cylinder stops moving to avoid the over-extrusion of the driven wheel 41.

[0063] In some embodiments, the driving assembly 3 further includes a frequency converter, which is electrically connected to the driving motor 31. The frequency converter can adjust the rotational speed of the output end of the driving motor 31, thereby controlling the rotational speed of the driving wheel 21 and adjusting the hot rolling forming efficiency of the workpiece 7. During specific implementation, the rotational speed of the driving wheel 21 is controlled by the frequency converter 34 to be N---100 to 150 revolutions per minute.

[0064] In some embodiments, alloy teeth are respectively provided on the outer periphery of the driven wheel 41 and the outer periphery of the driving wheel 21. The alloy teeth are in contact with the workpiece 7 to process the workpiece 7. The alloy teeth have a high service life and are resistant to high temperatures. The alloy teeth have high strength and meet the requirement of rolling teeth on the workpiece 7. The outer periphery of the alloy teeth and the workpiece 7 are extruded, and the outer periphery of the workpiece 7 is extruded into a tooth shape. Through continuous meshing, the outer periphery of the workpiece 7 is processed into a tooth shape.

[0065] During specific implementation. The alloy teeth are made of cemented carbide, such as tungsten steel, or cemented carbide made of tungsten carbide and cobalt.

[0066] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A planetary gear forming device, characterized in that: include: A base having a vertically disposed working surface; A first molded part is fixedly arranged on the working surface, wherein the first molded part has a driving wheel, and a rotating shaft of the driving wheel is perpendicular to the working surface; A driving assembly, drivingly connected to the driving wheel; and A plurality of second forming parts each have a driven wheel, the rotating shaft of the driven wheel is perpendicular to the working surface, the driving wheel and the plurality of driven wheels together form an extrusion space for blank forming; the driven wheels are slidably arranged on the working surface along a preset path parallel to the working surface to adjust the size of the extrusion space.

2. The planetary gear forming device according to claim 1, characterized in that: The second forming member further includes a moving shaft, which is perpendicular to the working surface. One end of the moving shaft is slidably disposed on the working surface along the preset path, and the other end of the moving shaft is coaxially connected to the driven wheel.

3. The planetary gear forming device according to claim 2, characterized in that: A plurality of slideways are arranged on the working surface, and the slideways correspond to the second molded parts one by one. A telescopic part is installed in the slideway, and the telescopic end of the telescopic part is connected to the moving shaft to drive the moving shaft to move along the preset path.

4. The planetary gear forming device according to claim 1, characterized in that: The planetary gear forming device further comprises a cooling component, and the cooling component transfers heat to the driving wheel and the driven wheel respectively.

5. The planetary gear forming device according to claim 4, characterized in that: The cooling component includes a cooling box, multiple water inlet pipes, multiple jackets and multiple water outlet pipes connected in sequence along the flow direction of cooling water. The jackets are respectively sleeved on the outer circumference of the corresponding first molded part or the corresponding second molded part. The water inlet pipe, the jacket and the water outlet pipe are respectively provided in multiple numbers and correspond one to one with the driving wheel and the driven wheel. The water inlet pipe, the jacket and the water outlet pipe form a cooling branch, and multiple cooling branches are arranged in parallel.

6. The planetary gear forming device according to claim 1, characterized in that: The first molded part also includes a fixed shaft, one end of which is fixed to the working surface, and the other end of which is coaxially connected to the driving wheel.

7. The planetary gear forming device according to claim 6, characterized in that: The driving assembly includes a driving motor, a transmission wheel and a synchronous belt, wherein the transmission wheel is arranged at the output end of the driving motor, and the rotating shaft of the transmission wheel is parallel to the rotating shaft of the driving wheel; The first molded part also includes a transmission pulley sleeved on the fixed shaft, and the transmission pulley and the transmission wheel are connected through a synchronous belt transmission.

8. The planetary gear forming device according to claim 3, characterized in that: A positioning assembly is installed on the slide, and the positioning assembly includes a travel switch and a stopper. The travel switch is arranged on the movable shaft and is communicatively connected with the telescopic member. The stopper is arranged on the slide and is located on the side of the corresponding travel switch away from the telescopic member. When the movable shaft moves to the maximum processing position, the stopper triggers the travel switch.

9. The planetary gear forming device according to claim 7, characterized in that: The driving assembly further includes a frequency converter, and the frequency converter is conductively connected to the driving motor.

10. The planetary gear forming device according to claim 1, characterized in that: Alloy teeth are respectively arranged on the outer periphery of the driven wheel and the outer periphery of the driving wheel, and the alloy teeth abut against the blank to process the blank.

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