High-precision speed reducer based on elastic deformation transmission

Abstract

The invention relates to the field of speed reducers, in particular to a high-precision speed reducer based on elastic deformation transmission, which comprises a rigid wheel, a switching assembly, a supplementing assembly and a cooling assembly, a speed reducer flexible wheel is rotatably arranged in the rigid wheel, and a wave generator is arranged in the speed reducer flexible wheel through a flexible bearing; a supporting installation disc is fixedly connected to the side, away from the speed reducer flexible gear, of the rigid gear through bolts, and an output disc is arranged on the side, located on the supporting installation disc, of the speed reducer flexible gear. When the rigid gear and the speed reducer flexible gear are used for normal speed reduction transmission or are shut down and not used, lubricating grease can be supplemented to the meshing area of the rigid gear and the speed reducer flexible gear, heat in the space in the transmission interval cavity can be reduced, the use stability and convenience of the speed reducer are improved, cooperation between mechanisms does not interfere with each other, and operation is free of worry.

Description

TECHNICAL FIELD

[0001] The application relates to the field of speed reducers, in particular to a high-precision speed reducer based on elastic deformation transmission. BACKGROUND

[0002] The harmonic speed reducer is a kind of precision device for transmitting motion by using elastic body harmonic deformation, and is named after the harmonic wave shape of the elastic deformation of the flexspline, and the core is composed of a wave generator, a flexspline and a rigid wheel, when working, the wave generator forces the flexspline to produce elliptical elastic deformation, so that the flexspline and the rigid wheel tooth part are alternately engaged, and the speed reduction is realized through the tooth difference, and the harmonic speed reducer is widely used in scenes such as industrial robot joints, precision machine tools, aerospace equipment, etc., and can meet the transmission demand of high precision and large speed reduction ratio. The existing harmonic speed reducer is filled with a large amount of lubricating grease between the wave generator, the flexspline and the rigid wheel during installation, and then the combined speed reducer is connected in a closed mode, but with the long-time use of the speed reducer, the lubricating grease will be aged due to high temperature and mechanical shearing force, or will slowly leak from the sealing gap, and needs to be disassembled and supplemented after a certain period of use, and the lubricating grease is in a relatively sealed environment, and heat is not easy to handle with the long-time operation of the flexspline and the rigid wheel tooth part, thereby affecting the normal elastic deformation use of the speed reducer. SUMMARY

[0003] The application aims to provide a high-precision speed reducer based on elastic deformation transmission to solve the problems in the background.

[0004] To achieve the above-mentioned purpose, the application provides the following technical scheme: a high-precision speed reducer based on elastic deformation transmission, comprising: A rigid wheel is provided with a speed reducer flexspline rotating in the rigid wheel, a wave generator is provided in the speed reducer flexspline through a flexible bearing, a support mounting disc is fixedly connected to the side of the rigid wheel away from the speed reducer flexspline through bolts, and an output disc is provided on the side of the speed reducer flexspline located on the support mounting disc. An adapter assembly is provided with a supplement assembly and a cooling assembly on one side, the adapter assembly is arranged between the rigid wheel and the support mounting disc, the adapter assembly comprises an adapter function ring, the supplement assembly comprises a plurality of grease supplement pipes, the cooling assembly comprises a plurality of arc-shaped heat dissipation blocks, the plurality of arc-shaped heat dissipation blocks are respectively close to the plurality of grease supplement pipes, a transmission interval cavity is arranged between the rigid wheel and the speed reducer flexspline, and the grease supplement pipes and the arc-shaped heat dissipation blocks are arranged in the transmission interval cavity.

[0005] Preferably, the wave generator and the output disc connected with the speed reducer flexspline are both provided with an axle connecting groove in the center, the outer side of the rigid wheel is provided with a motor mounting flange, the inner circumferential side of the rigid wheel and the outer circumferential side of the speed reducer flexspline are both provided with transmission teeth, and the transmission teeth of the rigid wheel and the speed reducer flexspline are arranged in a matched mode.

[0006] Preferably, one side of the support mounting disc in the transmission interval cavity is provided with an access butt joint groove, one side of the adapter function ring is provided with an access butt joint block, the access butt joint block is sealingly inserted into the access butt joint groove, one side of the access butt joint groove is provided with a grease supply groove and an air source connection groove, and the grease supply groove and the first adapter groove are connected, and the air source connection groove and the second adapter groove are connected.

[0007] Preferably, the first adapter groove is connected with the first annular shunt groove, and the second adapter groove is connected with the second annular shunt groove.

[0008] Preferably, a plurality of grease supplement pipes are horizontally arranged on one side of the adapter function ring, one end of each of the grease supplement pipes is provided with a bending section, the bending section of each of the grease supplement pipes points to the transmission tooth joint position of the rigid wheel and the flexible wheel of the speed reducer, and one side of each of the grease supplement pipes is connected with the first annular shunt groove.

[0009] Preferably, one end of each of the arc-shaped heat dissipation blocks is connected with one side of the access butt joint block, and one side of the inner arc of each of the arc-shaped heat dissipation blocks is provided with a plurality of heat dissipation fins.

[0010] Preferably, the arc-shaped heat dissipation block is provided with a distribution air groove, one side of the access butt joint block is provided with an annular air collection groove, and one side of each of the distribution air grooves is connected with the annular air collection groove.

[0011] Preferably, the annular air collection groove is horizontally and symmetrically provided with a plurality of heat dissipation air pipes, one side of each of the heat dissipation air pipes is connected with the second annular shunt groove, each of the heat dissipation air pipes is inserted into the distribution air groove of each of the arc-shaped heat dissipation blocks, and the annular air collection groove is arranged in a staggered manner with the grease supplement pipe.

[0012] Preferably, one side of the support mounting disc away from the access butt joint groove is provided with an exhaust butt joint groove, one side of the adapter function ring away from the access butt joint groove is provided with an exhaust butt joint block, and the exhaust butt joint block is sealingly inserted into the exhaust butt joint groove.

[0013] Preferably, one side of the support mounting disc is provided with an unloading joint, the unloading joint is provided with a first exhaust groove in communication with the exhaust butt joint groove, one side of the annular air collection groove is provided with a second exhaust groove penetrating through the exhaust butt joint block, and the second exhaust groove is connected with the first exhaust groove.

[0014] Compared with the prior art, the present application has the following advantages: The device is used by setting the adapter assembly with the supplement assembly and the cooling assembly in the transmission interval cavity between the rigid wheel and the flexible wheel of the speed reducer, supplementing the lubricating grease for the meshing area of the rigid wheel and the flexible wheel of the speed reducer, and cooling the heat in the space of the transmission interval cavity when the rigid wheel and the flexible wheel of the speed reducer are normally used or stopped, so that the use stability and convenience of the speed reducer are improved, and the cooperation between the mechanisms does not interfere with each other, and the operation is labor-saving. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the application; Figure 2 It is a side cut structural schematic diagram of the application; Figure 3 It is a schematic diagram of A part of the application; Figure 2 It is a schematic diagram of B part of the application; Figure 4 Figure 3 It is a schematic diagram of C part of the application; Figure 5 It is a schematic diagram of D part of the application; Figure 3 Figure 6 It is a schematic diagram of E part of the application; Figure 2 It is a schematic diagram of F part of the application. Figure 7 It is a schematic diagram of the installation structure of the adapter function ring 6 of the application; Figure 8 Figure 7 It is a schematic diagram of the installation structure of the adapter function ring 6 of the application; Figure 9 It is a schematic diagram of the installation structure of the adapter function ring 6 of the application; Figure 10 It is a schematic diagram of the installation structure of the adapter function ring 6 of the application; Figure 11 It is a schematic diagram of the installation structure of the adapter function ring 6 of the application; Figure 10 In the figure: rigid wheel 1, wave generator 2, speed reducer flexible wheel 3, support mounting disc 4, transmission interval cavity 5, adapter function ring 6, access docking block 7, grease supply groove 8, air source connection groove 9, first annular shunt groove 10, second annular shunt groove 11, first adapter groove 12, second adapter groove 13, grease supplement pipe 14, arc-shaped heat dissipation block 15, annular collection air groove 16, distribution air groove 17, heat dissipation air pipe 18, heat dissipation fin 19, discharge joint 20, discharge docking block 21, first discharge groove 22, discharge docking groove 23, second discharge groove 24, access docking groove 25.

[0016] DETAILED DESCRIPTION

[0017] ​​​​To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figures 1-11 The present invention provides the following technical solutions: A high-precision reducer based on elastic deformation transmission includes a rigid wheel 1, a reducer flexible wheel 3 rotatably mounted inside the rigid wheel 1, a wave generator 2 mounted inside the reducer flexible wheel 3 via a flexible bearing, a support mounting plate 4 fixedly connected to the side of the rigid wheel 1 away from the reducer flexible wheel 3 by bolts, and an output plate located on the side of the reducer flexible wheel 3 on the support mounting plate 4. A shaft connection groove is opened at the center of the output plate connecting the wave generator 2 and the reducer flexible wheel 3. A motor mounting flange is provided on the outer side of the rigid wheel 1. Transmission teeth are provided on the inner circumference of the rigid wheel 1 and the outer circumference of the reducer flexible wheel 3, and the transmission teeth of the rigid wheel 1 and the reducer flexible wheel 3 are configured to mesh. When the wave generator 2 is driven to rotate by the motor shaft, the wave generator 2, in conjunction with the flexible bearing, performs harmonic elastic deformation on the reducer flexible wheel 3, thereby causing the reducer flexible wheel 3 to mesh with the transmission teeth of the rigid wheel 1, driving the reducer flexible wheel 3 to rotate. A transition assembly is used to connect the internal and external spaces of the reducer. One side of the transition assembly has a supplementary assembly and a cooling assembly. The transition assembly is located between the rigid wheel 1 and the support mounting plate 4. The transition assembly includes a transition functional ring 6. The support mounting plate 4, located within the transmission interval cavity 5, has an access docking groove 25 on one side. An access docking block 7 is located on one side of the transition functional ring 6. The access docking block 7 is sealed and inserted into the access docking groove 25. A grease supply groove 8 and an air source connection groove 9 are provided through the support mounting plate 4 on one side of the access docking groove 25. The access docking block 7 has openings on both sides... The first transition groove 12 and the second transition groove 13 are connected, and the grease supply groove 8 and the first transition groove 12 are connected to each other. The air source connection groove 9 and the second transition groove 13 are connected to each other. When the transition function ring 6 is installed, the transition function ring 6 is first matched with the support mounting plate 4 so that the access docking block 7 is inserted into the access docking groove 25 of the support mounting plate 4. Then the support mounting plate 4 and the wave generator 2 are bolted together. When the support mounting plate 4 is connected and fixed to the rigid wheel 1, the transition function ring 6 is located between the support mounting plate 4 and the rigid wheel 1 to keep the connection of the transition function ring 6 stable.

[0019] The supplementary assembly includes several grease supply pipes 14. A first annular flow divider 10 and a second annular flow divider 11 are respectively formed on both sides of the transition functional ring 6. The side of the first transition groove 12 away from the grease supply groove 8 is connected to the first annular flow divider 10. The side of the second transition groove 13 away from the air source connection groove 9 is connected to the second annular flow divider 11. Several grease supply pipes 14 are horizontally positioned on one side of the transition functional ring 6. One end of each grease supply pipe 14 away from the transition functional ring 6 has a bent section, which points towards the transmission teeth of the rigid wheel 1 and the reducer flexible wheel 3. The gearbox is positioned such that several grease supply pipes 14 are respectively connected to one side of the first annular diversion groove 10. During the installation of the entire gearbox, the grease supply groove 8 is connected to the pneumatic grease supply device with a hose. The pneumatic grease supply device can be a small automatic device commonly used in the prior art. The air source connection groove 9 is connected to the hose of the cold air blower of the external air compressor or high-pressure air source. Lubricating grease can then be supplied into the first annular diversion groove 10 through the grease supply groove 8 and the first transfer groove 12, and high-pressure airflow can be supplied into the second annular diversion groove 11 through the air source connection groove 9 and the second transfer groove 13. When lubricating grease is supplied into the first annular diversion groove 10 through the grease supply groove 8 and the first transfer groove 12, the lubricating grease will first fill the first annular diversion groove 10, and then be ejected from the ends of several grease replenishment pipes 14 away from the transfer function ring 6. Since the ends of the grease replenishment pipes 14 away from the transfer function ring 6 are bent sections and point to the gear tooth engagement position of the rigid wheel 1 and the reducer flexure 3, the lubricating grease can be replenished at the engagement position of the rigid wheel 1 and the reducer flexure 3 through several grease replenishment pipes 14 when the reducer flexure 3 is operating normally or stopped and not in use, without stopping the machine or disassembling for replenishment, and without affecting the normal reduction transmission of the reducer flexure 3.

[0020] The cooling component includes several arc-shaped heat sinks 15, which are respectively located near several grease replenishment pipes 14. A transmission interval cavity 5 is provided between the rigid wheel 1 and the reducer flexible wheel 3. The grease replenishment pipes 14 and the arc-shaped heat sinks 15 are both located in the transmission interval cavity 5. One end of each arc-shaped heat sink 15 is connected to one side of the connecting block 7. The several grease replenishment pipes 14 are respectively located on one side of the inner arc of the arc-shaped heat sink 15. Several heat dissipation fins 19 are provided on both the inner and outer arc sides of the arc-shaped heat sink 15. Each arc-shaped heat sink 15 has a distribution air groove 17. One side of the connecting block 7 has an annular collecting air groove 16. One side of each of the several distribution air grooves 17 is connected to the annular collecting air groove 16. Several heat dissipation air pipes 18 are horizontally and symmetrically arranged in the annular collecting air groove 16. One side of each of the several heat dissipation air pipes 18 is connected to the second annular diversion groove 11. A plurality of cooling ducts 18 are respectively inserted into the distribution ducts 17 of a plurality of arc-shaped heat sinks 15. The annular collecting duct 16 and the grease replenishment pipe 14 are staggered. When high-pressure airflow is sent into the second annular diversion duct 11, the high-pressure airflow is distributed from the plurality of cooling ducts 18 to the distribution ducts 17 of the arc-shaped heat sinks 15. The cooling ducts 18 are inserted into the end of the distribution ducts 17 away from the transfer function ring 6. Then, the airflow blown out by the cooling ducts 18 flows back at the end of the arc-shaped heat sinks 15 and enters the annular collecting duct 16 from the connection position of the distribution ducts 17 and the annular collecting duct 16. In this way, the airflow completes a covering circulation in the distribution ducts 17 of the arc-shaped heat sinks 15, and dissipates the heat of the lubricating grease in the transmission interval cavity 5 absorbed by the heat sink fins 19, thereby reducing the space heat in the transmission interval cavity 5, reducing the thermal impact of the lubricating grease and ensuring the stable use of the reducer flexure 3.

[0021] The support mounting plate 4 has a discharge docking groove 23 on the side away from the access docking groove 25. The transition function ring 6 has a discharge docking block 21 on the side away from the access docking groove 25, and the discharge docking block 21 is sealed and inserted into the discharge docking groove 23. The support mounting plate 4 has a discharging connector 20 on one side, and the discharging connector 20 is connected to the discharge docking groove 23 and has a first discharge groove 22. The annular collecting air groove 16 has a second discharge groove 24 through the discharge docking block 21 on one side, and the second discharge groove 24 is connected to the first discharge groove 22. The high-speed airflow blown by several heat dissipation air pipes 18 into the distribution air groove 17 enters the annular collecting air groove 16 and is discharged from the second discharge groove 24 and the first discharge groove 22. At this time, the airflow discharged from the first discharge groove 22 can turbulently dissipate heat in the reducer installation space, or it can be connected to the exhaust hose for designated discharge.

[0022] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-precision speed reducer based on elastic deformation transmission, characterized in that, include: A rigid wheel (1) is provided with a speed reducer flexure wheel (3) rotating inside the rigid wheel (1). A wave generator (2) is provided inside the speed reducer flexure wheel (3) through a flexible bearing. A support mounting plate (4) is fixedly connected to the side of the rigid wheel (1) away from the speed reducer flexure wheel (3) by bolts. An output plate is provided on the side of the speed reducer flexure wheel (3) located on the support mounting plate (4). The adapter assembly has a supplementary assembly and a cooling assembly on one side. The adapter assembly is located between the rigid wheel (1) and the support mounting plate (4). The adapter assembly includes an adapter function ring (6). The supplementary assembly includes several grease replenishment pipes (14). The cooling assembly includes several arc-shaped heat dissipation blocks (15). The several arc-shaped heat dissipation blocks (15) are respectively close to the several grease replenishment pipes (14). A transmission interval cavity (5) is sandwiched between the rigid wheel (1) and the reducer flexible wheel (3). The grease replenishment pipes (14) and the arc-shaped heat dissipation blocks (15) are both located in the transmission interval cavity (5).

2. The high-precision reducer based on elastic deformation transmission according to claim 1, characterized in that: The output disk connecting the wave generator (2) and the reducer flexure (3) is provided with a shaft connection groove at the center. The outer side of the rigid wheel (1) is provided with a motor mounting flange. The inner circumference of the rigid wheel (1) and the outer circumference of the reducer flexure (3) are provided with transmission teeth, and the transmission teeth of the rigid wheel (1) and the reducer flexure (3) are matched.

3. A high-precision reducer based on elastic deformation transmission according to claim 2, characterized in that: The support mounting plate (4) is provided with an access docking groove (25) on one side of the transmission interval cavity (5). The transfer function ring (6) is provided with an access docking block (7) on one side. The access docking block (7) is sealed and inserted into the access docking groove (25). The access docking groove (25) is provided with a grease supply groove (8) and an air source connection groove (9) through the support mounting plate (4) on one side. The access docking block (7) is provided with a first transfer groove (12) and a second transfer groove (13) on both sides respectively. The grease supply groove (8) and the first transfer groove (12) are connected to each other, and the air source connection groove (9) and the second transfer groove (13) are connected to each other.

4. A high-precision reducer based on elastic deformation transmission according to claim 3, characterized in that: The inner sides of the transfer function ring (6) are respectively provided with a first annular diversion groove (10) and a second annular diversion groove (11). The side of the first transfer groove (12) away from the grease supply groove (8) is connected to the first annular diversion groove (10), and the side of the second transfer groove (13) away from the gas source connection groove (9) is connected to the second annular diversion groove (11).

5. A high-precision reducer based on elastic deformation transmission according to claim 4, characterized in that: Several grease replenishment pipes (14) are respectively horizontally arranged on one side of the transfer function ring (6). The end of the grease replenishment pipe (14) away from the transfer function ring (6) is provided with a bent section. The bent section of the grease replenishment pipe (14) points to the gear tooth engagement position of the rigid wheel (1) and the reducer flexible wheel (3). Several grease replenishment pipes (14) are respectively connected to one side of the first annular diversion groove (10).

6. A high-precision reducer based on elastic deformation transmission according to claim 5, characterized in that: One end of each of the arc-shaped heat sinks (15) is connected to one side of the access docking block (7), and a number of grease replenishment pipes (14) are located on the inner arc side of the arc-shaped heat sinks (15), and a number of heat dissipation fins (19) are provided on both the inner arc side and the outer arc side of the arc-shaped heat sinks (15).

7. A high-precision reducer based on elastic deformation transmission according to claim 6, characterized in that: Each of the arc-shaped heat sinks (15) has a distribution air trough (17) and an annular collecting air trough (16) is provided on one side of the connecting block (7). One side of each of the distribution air troughs (17) is connected to the annular collecting air trough (16).

8. A high-precision reducer based on elastic deformation transmission according to claim 7, characterized in that: The annular collecting air channel (16) is symmetrically arranged with several heat dissipation air pipes (18). One side of each heat dissipation air pipe (18) is connected to the second annular diversion channel (11). The heat dissipation air pipes (18) are respectively inserted into the distribution air channels (17) of several arc-shaped heat dissipation blocks (15). The annular collecting air channel (16) and the grease replenishment pipe (14) are staggered.

9. A high-precision reducer based on elastic deformation transmission according to claim 8, characterized in that: The support mounting plate (4) has a discharge docking groove (23) on the side away from the access docking groove (25), and the transfer function ring (6) has a discharge docking block (21) on the side away from the access docking groove (25), and the discharge docking block (21) is sealed and inserted into the discharge docking groove (23).

10. A high-precision reducer based on elastic deformation transmission according to claim 9, characterized in that: The support mounting plate (4) has a discharge connector (20) on one side. The discharge connector (20) is connected to the discharge docking groove (23) and has a first discharge groove (22). The annular collecting air groove (16) has a second discharge groove (24) through the discharge docking block (21) on one side, and the second discharge groove (24) is connected to the first discharge groove (22).

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