Auxiliary device for assembling gear of speed reducer

Abstract

The utility model relates to the technical field of speed reducer assembly, in particular to a speed reducer gear assembly auxiliary device which comprises a working table, an assembly groove is formed in the working table, a calibration mechanism used for determining the circle center point of a speed reducer gear is arranged on the working table, a rack is further fixedly connected to the working table, and a pressing mechanism is arranged on the rack. The pressing mechanism comprises an electric push rod fixedly installed on the rack, the free end of the electric push rod is fixedly connected with a support, the support is fixedly connected with a pressing disc, the pressing disc and the assembling groove are located on the same circle center, a liftable pressing block is arranged in the middle of the pressing disc, a lead screw is rotationally installed in the middle of the pressing disc, and the lead screw is in threaded connection with a square threaded sleeve. The pressing block is fixedly connected to the bottom of the square threaded sleeve, and a sliding sleeve is further rotationally installed on the pressing disc. When a middle small part needs to be pressed into a large part, the middle small part and the pressing disc are not located on the same plane, the diameter of the middle small part is slightly smaller than that of an inner hole of the part, and the spherical bottom face automatically guides centering.

Description

Technical Field

[0001] This utility model relates to the field of speed reducer assembly technology, specifically to a speed reducer gear assembly auxiliary device. Background Technology

[0002] In the field of modern mechanical transmission, the speed reducer is a core power conversion component, and its assembly accuracy directly affects the stability and lifespan of the equipment. As a key transmission component, gears must be assembled to ensure that the center of the gear is strictly coaxial with the output shaft. When pressing the gear during assembly, if the pressure block and the pressing plate are fixed on the same plane, the pressure block may not reach the assembly position due to the pressing plate contacting the large part in advance in deep holes or narrow spaces. This also requires the design of pressure heads of various lengths, increasing the difficulty of tooling management and production downtime. If the diameter of the pressure block is equal to or larger than the inner hole of the part, the insertion may be stuck or the inner hole surface may be scratched due to processing errors. If the spherical bottom surface is missing, the self-centering function will be lost, and the assembly will rely on a high-precision positioning system or manual calibration, which will significantly increase the assembly difficulty and error risk. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides an auxiliary device for gear assembly of speed reducers. It has the advantage of being suitable for pressing gears in deep holes and narrow spaces, and solves the problem that the pressing block cannot reach the assembly position due to the pressing plate contacting the large parts too early.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0005] A gear reducer assembly auxiliary device includes a worktable with an assembly slot. The worktable is equipped with a calibration mechanism for determining the center point of the gear reducer. A frame is also fixedly mounted on the worktable, and a pressing mechanism is provided on the frame. The pressing mechanism includes an electric push rod fixedly mounted on the frame. A bracket is fixedly connected to the free end of the electric push rod, and a pressing plate is fixedly mounted on the bracket. The pressing plate and the assembly slot are located at the same center, and a liftable pressure block is provided in the middle of the pressing plate.

[0006] Preferably, a lead screw is rotatably mounted in the middle of the pressing plate, a square threaded sleeve is threaded onto the lead screw, a limiting plate is fixedly connected inside the pressing plate, the square threaded sleeve and the limiting plate are slidably connected, the pressing block is fixedly connected to the bottom of the square threaded sleeve, a sliding sleeve is also rotatably mounted on the pressing plate, and a meshing spur gear two and a spur gear one are respectively fitted on the lead screw and the sliding sleeve.

[0007] Preferably, a motor is fixedly mounted on the frame, a transmission rod is fixedly connected to the output end of the motor, the end of the transmission rod extends into the inside of the sliding sleeve, a slider is fixedly connected to the transmission rod, and the slider is slidably connected to the inner wall of the sliding sleeve through a sliding groove.

[0008] Preferably, the calibration mechanism includes multiple limiting frames fixed to the workbench, a screw is rotatably installed inside the limiting frame, a limiting sleeve is threadedly connected to the screw and slidably connected to the limiting frame, and an arc-shaped plate is fixedly connected to one end of the limiting sleeve near the assembly groove.

[0009] Preferably, a second motor is fixedly mounted on the bottom of the workbench, and a transmission frame located inside the workbench is fixedly connected to the output end of the second motor. A gear ring is fixedly connected to the transmission frame, and a spur gear third that meshes with the gear ring is fixedly connected to the end of the screw.

[0010] Preferably, the bracket is an inverted U-shape, and the bracket does not contact the first spur gear and the second spur gear.

[0011] By employing the above technical solution, this utility model provides an auxiliary device for assembling gears in a speed reducer, which has at least the following beneficial effects:

[0012] 1. This gear assembly auxiliary device for reducers requires the pressure block to be moved downwards when pressing small intermediate parts into the interior of large parts, so that it is not on the same plane as the pressing plate. The extension length is adjustable, and its diameter is slightly smaller than the inner hole of the part. The spherical bottom surface automatically guides the centering, which is suitable for pressing in deep holes and narrow spaces without the need to replace the special pressure head.

[0013] 2. This gear assembly auxiliary device for reducers can push the gear parts to the center position for fixation. It can accurately determine and fix the center point of the gear, solving the problem of large deviation in traditional manual alignment. It ensures that the gear is coaxial with the assembly slot, adapts to gears with different outer diameters, and can quickly adapt to multiple specifications of parts without changing tooling. It avoids gear displacement during assembly and improves the subsequent pressing accuracy and consistency. Attached Figure Description

[0014] The accompanying drawings, which are included to provide a further understanding of the present invention, form part of this application:

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a schematic diagram of the pressing mechanism of this utility model;

[0017] Figure 3 This utility model Figure 3 Enlarged view of point A;

[0018] Figure 4 This is a schematic diagram of the internal structure of the workbench of this utility model;

[0019] Figure 5 This is a schematic diagram of the calibration mechanism of this utility model.

[0020] Figure label:

[0021] 100. Workbench; 101. Assembly slot; 102. Machine frame;

[0022] 200. Pressing mechanism; 201. Electric push rod; 202. Bracket; 203. Pressure plate; 204. Motor 1; 205. Transmission rod; 206. Sliding sleeve; 207. Spur gear 1; 208. Lead screw; 209. Spur gear 2; 210. Square threaded sleeve; 211. Pressure block; 212. Slider;

[0023] 300. Calibration mechanism; 301. Motor II; 302. Transmission frame; 303. Gear ring; 304. Limiting frame; 305. Screw; 306. Spur gear III; 307. Limiting sleeve; 308. Arc plate. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] The following describes, with reference to the accompanying drawings, some embodiments of the gear assembly auxiliary device for a speed reducer provided by this utility model.

[0026] Example 1:

[0027] The core requirement for gear assembly is concentricity and coaxiality. If the gear ring component is not fixed in the center, the center of the assembled gear may be offset from the axis of the reducer's output shaft. This will lead to uneven force distribution during gear meshing, resulting in periodic impact loads, exacerbating tooth surface wear, and increasing the risk of tooth breakage. To solve the above problems, combined with... Figures 1-3 As shown, the gear assembly auxiliary device for reducers provided by this utility model includes a worktable 100, an assembly slot 101 on the worktable 100, a calibration mechanism 300 on the worktable 100 for determining the center point of the reducer gear, which can fix the gear ring 303 component to be assembled in the center position, and a frame 102 is also fixedly connected to the worktable 100. The frame 102 is provided with a pressing mechanism 200, which can automatically press the gear component to realize automatic assembly.

[0028] If the pressure block 211 and the pressing plate 203 are fixed on the same plane, when the pressing plate 203 is pressed down as a whole, the bottom surface will contact the surface of the large part first, causing the pressure block 211 to be unable to penetrate the inner hole. To solve the above problem, the pressing mechanism 200 includes an electric push rod 201 fixed on the frame 102. The free end of the electric push rod 201 is fixedly connected to a bracket 202. The pressing plate 203 is fixedly connected to the bracket 202. The pressing plate 203 and the assembly groove 101 are located at the same center. The pressing plate 203 has a liftable pressure block 211 in the middle. First, the pressure block 211 is in the pressing plate 203. Then, the large part is placed in the assembly groove 101. Then, place the parts to be assembled in the corresponding positions of the large parts. At this time, the electric push rod 201 pushes the bracket 202 to move the pressing plate 203 downwards, so that it contacts the parts and assembles them with the large parts. When it is necessary to press the small parts into the large parts, the pressing block 211 needs to be moved downwards so that it is not on the same plane as the pressing plate 203. Following the above steps, the small parts and large parts can be pressed and assembled. The pressing block 211 extends out of the pressing plate 203 (the extension length is adjustable). Its diameter is slightly smaller than the inner hole of the parts. The spherical bottom surface automatically guides the centering, which is suitable for deep hole and narrow space pressing, and there is no need to replace the special pressing head.

[0029] For parts of different depths, multiple lengths of pressure heads need to be designed, increasing tooling costs and changeover time, and reducing production efficiency. To solve the above problems, a lead screw 208 is rotatably installed in the middle of the pressing plate 203. A square threaded sleeve 210 is threaded onto the lead screw 208. A limit plate is fixed inside the pressing plate 203. The square threaded sleeve 210 and the limit plate are slidably connected. The pressure block 211 is fixed to the bottom of the square threaded sleeve 210. A sliding sleeve 206 is also rotatably installed on the pressing plate 203. A meshing spur gear 209 and a spur gear 207 are respectively fitted on the lead screw 208 and the sliding sleeve 206. The rotation of the lead screw 208 causes the square threaded sleeve 210 to move downward. The pressure block 211 moves downward with the square threaded sleeve 210 to press the small parts for assembly.

[0030] Furthermore, a motor 204 is fixedly mounted on the frame 102. A transmission rod 205 is fixedly connected to the output end of the motor 204. The end of the transmission rod 205 extends into the sliding sleeve 206. A slider 212 is fixedly connected to the transmission rod 205. The slider 212 is slidably connected to the inner wall of the sliding sleeve 206 through a sliding groove. When the motor 204 starts, it drives the transmission rod 205 to rotate. The transmission rod 205 drives the sliding sleeve 206 to rotate through the slider 212. The spur gear 207 rotates with the sliding sleeve 206. The spur gear 207 drives the lead screw 208 to rotate through the spur gear 209. The rotation of the lead screw 208 causes the square threaded sleeve 210 to move downward. The pressure block 211 moves downward with the square threaded sleeve 210 to press the small parts for assembly. The motor 204 does not need to move up and down with the pressing plate 203, avoiding damage to the motor 204 caused by vibration and improving the service life of the motor 204.

[0031] The bracket 202 is an inverted U-shape and does not contact the first spur gear 207 and the second spur gear 209.

[0032] As can be seen from the embodiment, the electric push rod 201 drives the pressing plate 203 to press down vertically. Its coaxial design with the assembly groove 101 ensures that the pressing force is applied evenly to the top surface of the part, avoiding edge deformation due to force, and is suitable for the flat assembly of large parts.

[0033] Example 2:

[0034] If the gear center is misaligned, it will cause uneven tooth backlash, resulting in vibration and noise during operation, and reducing the life of the reducer. To solve the above problems, combined with... Figure 4 and Figure 5 As shown, based on Embodiment 1, the calibration mechanism 300 includes multiple limiting frames 304 fixed to the workbench 100. A screw 305 is rotatably mounted inside each limiting frame 304. A limiting sleeve 307, which is slidably connected to the limiting frame 304, is threaded onto the screw 305. An arc-shaped plate 308 is fixed to one end of the limiting sleeve 307 near the assembly groove 101. The multiple screws 305 rotate, causing the limiting sleeve 307 to move. The arc-shaped plate 308 moves with the limiting sleeve 307, thereby pushing the gear component to the center position for fixation. This accurately determines and fixes the gear's center point, solving the problem of large deviations in traditional manual alignment. It ensures that the gear is coaxial with the assembly groove 101, adapts to gears of different outer diameters, and can quickly adapt to multiple specifications of parts without changing tooling. It avoids gear displacement during assembly, improving subsequent pressing accuracy and consistency.

[0035] Specifically, a second motor 301 is fixedly mounted at the bottom of the workbench 100. The output end of the second motor 301 is fixedly connected to a transmission frame 302 located inside the workbench 100. A gear ring 303 is fixedly connected to the transmission frame 302. A spur gear 306 that meshes with the gear ring 303 is fixedly connected to the end of the screw 305. When the second motor 301 is started, it drives the transmission frame 302 to rotate. The transmission frame 302 drives the gear ring 303 to rotate. The gear ring 303 meshes with the spur gear 306 and rotates, thereby simultaneously driving the screw 305 to rotate.

[0036] As can be seen from the above embodiments: First, the large gear or basic component is placed in the assembly slot 101 of the workbench 100, so that its bottom surface is in contact with the bottom of the slot; then, the motor 301 at the bottom of the workbench 100 is started, and the transmission frame 302 at the output end of the motor 301 drives the gear ring 303 to rotate. The gear ring 303 meshes with the spur gear 306 at the end of the screw 305, driving multiple screws 305 to rotate synchronously. When the screws 305 rotate, the threaded limiting sleeve 307 slides along the limiting frame 304, driving the arc plate 308 at one end of the limiting sleeve 307 to move towards the center of the assembly slot 101, pushing the gear component to the center position; then, the electric push rod 201 on the frame 102 is started, and the bracket 202 at its free end drives the pressing plate 203 to move downward. Since the pressing plate 203 is coaxial with the assembly slot 101, the bottom surface of the pressing plate 203 contacts the top surface of the part to be assembled and continues to press down. The assembly continues until the parts are fully assembled with the large gear. If it is necessary to press the small parts into the large parts, first start the motor 204 on the frame 102. The motor 204 drives the sliding sleeve 206 to rotate through the transmission rod 205 and the slider 212. The spur gear 207 on the sliding sleeve 206 meshes with the spur gear 209 on the lead screw 208, causing the lead screw 208 to rotate and drive the square threaded sleeve 210 to slide along the limiting plate, causing the bottom pressing block 211 to extend from the middle of the pressing plate 203. Then, the electric push rod 201 pushes the pressing plate 203 to drive the pressing block 211 to press down, pressing the small parts into the inner hole of the large gear. After completion, the motor 204 reverses to retract the pressing block 211. After assembly, the electric push rod 201 rises to reset, and the motor 201 reverses to drive the screw 305 to loosen the gear on the arc plate 308, so that the assembled parts can be taken out, realizing the gear calibration, centering and pressing assembly.

[0037] It should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gear assembly aid for a speed reducer, comprising a worktable (100), characterized in that: The workbench (100) is provided with an assembly slot (101), and the workbench (100) is provided with a calibration mechanism (300) for determining the center point of the reducer gear. The workbench (100) is also fixedly connected with a frame (102), and the frame (102) is provided with a pressing mechanism (200). The pressing mechanism (200) includes an electric push rod (201) fixed on the frame (102), a bracket (202) fixed to the free end of the electric push rod (201), a pressing plate (203) fixed on the bracket (202), the pressing plate (203) and the assembly groove (101) are located at the same center, and a liftable pressing block (211) is provided in the middle of the pressing plate (203).

2. The reduction gear assembly aid device according to claim 1, characterized by: A lead screw (208) is rotatably mounted in the middle of the pressing plate (203). A square threaded sleeve (210) is threaded onto the lead screw (208). A limiting plate is fixed inside the pressing plate (203). The square threaded sleeve (210) and the limiting plate are slidably connected. The pressure block (211) is fixed to the bottom of the square threaded sleeve (210). A sliding sleeve (206) is also rotatably mounted on the pressing plate (203). A second spur gear (209) and a first spur gear (207) for meshing transmission are respectively fitted on the lead screw (208) and the sliding sleeve (206).

3. The reduction gear assembly aid device according to claim 2, characterized by: A motor (204) is fixedly mounted on the frame (102). A transmission rod (205) is fixedly connected to the output end of the motor (204). The end of the transmission rod (205) extends into the inside of the sliding sleeve (206). A slider (212) is fixedly connected to the transmission rod (205). The slider (212) is slidably connected to the inner wall of the sliding sleeve (206) through a groove.

4. The reduction gear assembly aid device according to claim 1, characterized by: The calibration mechanism (300) includes a plurality of limiting frames (304) fixed to the workbench (100). A screw (305) is rotatably installed inside the limiting frame (304). A limiting sleeve (307) that is slidably connected to the limiting frame (304) is threaded on the screw (305). An arc plate (308) is fixed to one end of the limiting sleeve (307) near the assembly groove (101).

5. The reduction gear assembly aid device according to claim 4, characterized by: The bottom of the workbench (100) is fixedly equipped with a second motor (301). The output end of the second motor (301) is fixedly connected to a transmission frame (302) located inside the workbench (100). A gear ring (303) is fixedly connected to the transmission frame (302). The end of the screw (305) is fixedly connected to a spur gear (306) that meshes with the gear ring (303) for transmission.

6. The reduction gear assembly aid device of claim 1, wherein: The bracket (202) is an inverted U-shape and does not contact the first spur gear (207) and the second spur gear (209).

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