Horizontal linear translation mechanism of mechanical arm

Abstract

The utility model relates to the technical field of mechanical arms, and discloses a mechanical arm horizontal linear translation mechanism which comprises a base and a bearing, a supporting plate is fixedly installed on the outer side of the base, a driving gear is fixedly installed on the side, close to the base, of a transmission shaft, and an air hole is formed in the driving gear; a fixing seat is fixedly mounted above the fixing plate, a lead screw is rotationally connected into the fixing seat, an output gear is meshed with the outer side of the lead screw, a mounting hole is formed in the bottom of the fixing seat, connecting pieces are fixedly mounted at the two ends of the lead screw, and mechanical arm assemblies are fixedly mounted above the connecting pieces. When the lead screw is engaged with the interior of the output gear to achieve horizontal displacement, due to the fact that the two ends of the lead screw are fixedly connected with the connecting piece, and the mechanical arm assembly is fixedly installed above the connecting piece, the mechanical arm assembly can conduct horizontal displacement through the sliding effect of the guide rail and the sliding groove, and the stability of horizontal displacement is improved.

Description

Technical Field

[0001] This utility model relates to the field of robotic arm technology, and more specifically, to a horizontal linear translation mechanism for robotic arms. Background Technology

[0002] An industrial robotic arm is a mechatronic device that mimics the functions of a human arm, wrist, and hand. It can move any object or tool according to the time-varying requirements of spatial posture, thereby completing the operation requirements of a certain industrial production. When the robotic arm is handling objects, it needs to perform multi-directional movements, among which horizontal linear motion is one of them. However, most of the existing horizontal linear motion drives are relatively complex and it is difficult to guarantee the stability of horizontal motion. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, this utility model provides a horizontal linear translation mechanism for a robotic arm, which has the advantage of maintaining the stability of horizontal linear motion.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a horizontal linear translation mechanism for a robotic arm, comprising: a base and a bearing; a support plate fixedly mounted on the outer side of the base; a connecting plate fixedly mounted on the upper part of the support plate; an mounting plate fixedly mounted on the bottom of the connecting plate; a drive assembly fixedly mounted on the end of the mounting plate away from the base; a transmission shaft fixedly mounted on the output end of the drive assembly; the transmission shaft passing through the bearing; the bearing being located inside the drive assembly; a drive gear fixedly mounted on the side of the transmission shaft near the base; and a vent hole provided inside the drive gear; a fixed plate; a fixed seat fixedly mounted on the upper part of the fixed plate; a lead screw rotatably connected inside the fixed seat; an output gear meshing on the outer side of the lead screw; a mounting hole provided at the bottom of the fixed seat; and connecting pieces rotatably connected to both ends of the lead screw; and a robotic arm assembly fixedly mounted on the upper part of the connecting pieces.

[0005] The beneficial effects of adopting the above technical solution are as follows: the start-up drive assembly drives the transmission shaft to rotate through the internal structure of the drive assembly. The drive shaft is fixedly installed with a drive gear at one end near the base. The outer sides of the drive gear and the output gear are connected by a synchronous belt. The synchronous belt passes through the inside of the mounting hole to facilitate installation. Therefore, after the drive gear drives the synchronous belt to rotate, the output gear will rotate. At this time, the inside of the output gear meshes with the lead screw, so that the lead screw has the effect of horizontal displacement.

[0006] As a preferred embodiment of this utility model, a guide rail is fixedly installed above the fixed plate, and a sliding groove is provided at the bottom of the robotic arm assembly, with the sliding groove slidably connected to the guide rail.

[0007] The beneficial effects of adopting the above technical solution are: when the lead screw and the output gear mesh internally to achieve horizontal displacement, since the two ends of the lead screw are fixedly connected to the connecting parts, and the mechanical arm assembly is fixedly installed above the connecting parts, the mechanical arm assembly will perform horizontal displacement through the sliding action of the guide rail and the slide groove, thereby improving the stability of the horizontal displacement.

[0008] As a preferred embodiment of this utility model, the base is L-shaped in the opposite direction, and there are two support plates. The two support plates are triangular in shape, and both support plates are located on the right side of the base.

[0009] The beneficial effects of adopting the above technical solution are: the two support plates are fixedly connected to the bottom of the connecting plate, and the main function is to support the bottom of the connecting plate through the stability of the triangle, so as to ensure the stability of the device during operation.

[0010] In a preferred embodiment of this invention, the vent is located in the middle of the drive gear and between the two support plates, and the drive gear is located directly below the output gear.

[0011] The beneficial effects of adopting the above technical solution are: the main function of the vent hole is to allow air to pass through and dissipate heat inside the drive gear, preventing the drive gear and output gear from generating excessive heat during the time they are connected and rotated with the synchronous belt, thus affecting the overall service life.

[0012] In a preferred embodiment of this utility model, the output gear is rotatably connected to the fixed base, and the fixed base is concave, with the output gear located inside the fixed base.

[0013] The beneficial effects of adopting the above technical solution are: the fixed base is fixedly connected above the fixed plate, which makes it easy to install the output gear in the designated position, ensuring the stability of the output gear when it rotates and preventing it from falling off.

[0014] As a preferred embodiment of this utility model, there are two connecting members, both of which are located on the left and right sides of the fixing plate, and both connecting members are on the same parallel line as the fixing base.

[0015] The beneficial effects of adopting the above technical solution are: the main function of the two connecting parts is to connect the lead screw and the robotic arm assembly, so that the lead screw can mesh with the output gear and move horizontally to drive the robotic arm assembly to perform horizontal linear motion.

[0016] As a preferred embodiment of this utility model, a lead screw nut is fixedly installed inside the output gear, the lead screw nut meshes with the lead screw, the lead screw nut is located outside the lead screw, and the output gear is located above the mounting hole.

[0017] The beneficial effects of adopting the above technical solution are: after the starting drive assembly drives the drive gear to rotate through the transmission shaft inside the bearing, the synchronous belt on the surface of the drive gear drives the output gear to rotate, thereby making the lead screw and lead nut inside the output gear mesh, so that the lead screw moves at a certain speed.

[0018] As a preferred embodiment of this utility model, there are two guide rails and two sliding grooves, both of which are located above the fixed plate, and the two sliding grooves are slidably connected to the two guide rails respectively.

[0019] The beneficial effect of adopting the above technical solution is that when the lead screw and the lead nut inside the output gear mesh and move, the two guide rails limit the robotic arm assembly by sliding with the two slide grooves, so that the robotic arm assembly can only move horizontally. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the guide rail structure of this utility model;

[0022] Figure 3 This utility model Figure 2 Enlarged schematic diagram of the structure at point A;

[0023] Figure 4 This is a schematic diagram of the lead screw structure connection of this utility model;

[0024] Figure 5 This utility model Figure 4 Enlarged schematic diagram of the structure at point B.

[0025] In the diagram: 1. Base; 2. Support plate; 3. Connecting plate; 4. Drive assembly; 5. Bearing; 6. Drive shaft; 7. Drive gear; 8. Vent hole; 9. Fixing plate; 10. Fixing seat; 11. Lead screw; 12. Output gear; 13. Connector; 14. Guide rail; 15. Robotic arm assembly; 16. Slide; 17. Mounting plate; 18. Mounting hole. Detailed Implementation

[0026] 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.

[0027] like Figures 1 to 5 As shown, this utility model provides a horizontal linear translation mechanism for a robotic arm, including: a base 1 and a bearing 5. A support plate 2 is fixedly installed on the outer side of the base 1. A connecting plate 3 is fixedly installed on the top of the support plate 2. An mounting plate 17 is fixedly installed on the bottom of the connecting plate 3. A drive assembly 4 is fixedly installed on the end of the mounting plate 17 away from the base 1. A transmission shaft 6 is fixedly installed on the output end of the drive assembly 4. The transmission shaft 6 passes through the bearing 5, which is located inside the drive assembly 4. An active gear 7 is fixedly installed on the side of the transmission shaft 6 near the base 1. A vent hole 8 is provided inside the active gear 7. A fixed plate 9 is fixedly installed on the top of the fixed plate 9. A lead screw 11 is rotatably connected inside the fixed plate 10. An output gear 12 meshes on the outer side of the lead screw 11. An installation hole 18 is provided at the bottom of the fixed plate 10. Connecting parts 13 are rotatably connected to both ends of the lead screw 11. A robotic arm assembly 15 is fixedly installed on the top of the connecting parts 13.

[0028] The beneficial effects of adopting the above technical solution are as follows: the start drive assembly 4 drives the transmission shaft to rotate through the internal structure of the drive assembly 4. The drive shaft 6 is fixedly installed with the drive gear 7 near the base 1. The drive gear 7 and the output gear 12 are connected by a synchronous belt. The synchronous belt passes through the inside of the mounting hole 18 to facilitate installation. Therefore, after the drive gear 7 drives the synchronous belt to rotate, the output gear 12 will rotate. At this time, the inside of the output gear 12 meshes with the lead screw 11, so that the lead screw 11 has the effect of horizontal displacement.

[0029] The guide rail 14 is fixedly installed on the top of the fixed plate 9, and the bottom of the robotic arm assembly 15 is provided with a sliding groove 16, which is slidably connected to the guide rail 14.

[0030] The beneficial effects of adopting the above technical solution are: when the lead screw 11 meshes with the output gear 12 to achieve horizontal displacement, since the two ends of the lead screw 11 are fixedly connected to the connecting piece 13, and the robotic arm assembly 15 is fixedly installed on the top of the connecting piece 13, the robotic arm assembly 15 will move horizontally through the sliding action of the guide rail 14 and the slide groove 16, thereby improving the stability of the horizontal displacement.

[0031] The base 1 is L-shaped in the opposite direction, and there are two support plates 2. The two support plates 2 are triangular, and both support plates 2 are located on the right side of the base 1.

[0032] The beneficial effects of adopting the above technical solution are: the two support plates 2 are fixedly connected to the bottom of the connecting plate 3, and the main function is to support the bottom of the connecting plate 3 through the stability of the triangle, so as to ensure the stability of the device during operation.

[0033] The vent 8 is located in the middle of the drive gear 7 and between the two support plates 2. The drive gear 7 is located directly below the output gear 12.

[0034] The beneficial effects of adopting the above technical solution are: the main function of the vent hole 8 is to allow the inside of the drive gear 7 to vent and dissipate heat, and to prevent the drive gear 7 and the output gear 12 from generating high heat inside during the time they are connected and rotated with the synchronous belt, which would affect the overall service life.

[0035] The output gear 12 is rotatably connected to the fixed base 10, and the fixed base 10 is concave, with the output gear 12 located inside the fixed base 10.

[0036] The beneficial effects of adopting the above technical solution are: the fixed base 10 is fixedly connected above the fixed plate 9, so that the output gear 12 can be easily installed in the designated position, ensuring the stability of the rotation of the output gear 12 when it rotates, and preventing it from falling off.

[0037] There are two connectors 13, both of which are located on the left and right sides of the fixing plate 9, and both connectors 13 are on the same parallel line as the fixing base 10.

[0038] The beneficial effects of adopting the above technical solution are: the main function of the two connecting parts 13 is to connect the lead screw 11 with the robotic arm assembly 15, so that the lead screw 11 can mesh with the output gear 12 and move horizontally to drive the robotic arm assembly 15 to move horizontally in a linear motion.

[0039] The output gear 12 has a screw nut fixedly installed inside it. The screw nut meshes with the lead screw 11. The screw nut is located outside the lead screw 11, and the output gear 12 is located above the mounting hole 18.

[0040] The beneficial effects of adopting the above technical solution are: after the start-up drive assembly 4 drives the drive gear 7 to rotate through the transmission shaft 6 inside the bearing 5, the synchronous belt on the surface of the drive gear 7 drives the output gear 12 to rotate, thereby making the nut inside the output gear 12 mesh with the lead screw 11, so that the lead screw 11 has a certain uniform speed when it moves.

[0041] There are two guide rails 14 and two slide grooves 16. The two guide rails 14 and the two slide grooves 16 are located above the fixed plate 9, and the two slide grooves 16 are slidably connected to the two guide rails 14 respectively.

[0042] The beneficial effect of adopting the above technical solution is that when the lead screw 11 meshes with the lead nut inside the output gear 12, the two guide rails 14 limit the robotic arm assembly 15 by sliding with the two slide grooves 16, so that the robotic arm assembly 15 can only move horizontally.

[0043] Working principle and usage process of this utility model:

[0044] First, a support plate 2 is fixedly installed on the outside of the base 1. A connecting plate 3 is fixedly installed above the support plate 2. An mounting plate 17 is fixedly installed at the bottom of the connecting plate 3. A drive assembly 4 is fixedly installed at the end of the mounting plate 17 away from the base 1. A drive shaft 6 is fixedly installed at the output end of the drive assembly 4. The drive shaft 6 passes through a bearing 5, which is located inside the drive assembly 4. A drive gear 7 is fixedly installed at the end of the drive shaft 6 near the base 1. The drive gear 7 and the output gear 12 are connected by a synchronous belt. The synchronous belt passes through the inside of the mounting hole 18 for easy installation. Therefore, after the drive gear 7 drives the synchronous belt to rotate, the output gear 12 will rotate. At this time, the inside of the output gear 12 meshes with the lead screw 11, so that the lead screw 11 has the effect of horizontal displacement.

[0045] Secondly, since a lead screw nut is fixedly installed inside the output gear 12, and the lead screw nut meshes with the lead screw 11, the lead screw nut is located outside the lead screw 11, and the output gear 12 is located above the mounting hole 18. When the output gear 12 rotates through the timing belt, the meshing between the output gear 12 and the lead screw 11 becomes smoother.

[0046] At the same time, when the lead screw 11 meshes with the output gear 12 to achieve horizontal displacement, since the two ends of the lead screw 11 are fixedly connected to the connector 13, and the mechanical arm assembly 15 is fixedly installed on the top of the connector 13, the mechanical arm assembly 15 will move horizontally through the sliding action of the guide rail 14 and the slide groove 16, thereby improving the stability of the horizontal displacement.

[0047] Finally, since the bottom of the robotic arm assembly 15 is provided with a sliding groove 16, and the sliding groove 16 is slidably connected to the guide rail 14, and there are two guide rails 14 and two sliding grooves 16, when the lead screw 11 engages with the lead nut inside the output gear 12, the two guide rails 14 respectively limit the robotic arm assembly 15 by sliding with the two sliding grooves 16, so that the robotic arm assembly 15 can only move horizontally.

[0048] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, 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.

[0049] 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 horizontal linear translation mechanism for a robot arm, characterized by, Include: The base and bearing, the outer side of the base is fixedly installed with support plate, the upper side of the support plate is fixedly installed with connecting plate, the bottom of the connecting plate is fixedly installed with mounting plate, the end away from the base of the mounting plate is fixedly installed with drive assembly, the output end of the drive assembly is fixedly installed with transmission shaft, the transmission shaft passes through bearing, the bearing is located in the inside of drive assembly, the side close to the base of the transmission shaft is fixedly installed with driving gear, the inside of the driving gear is provided with air hole; The fixed plate, the upper side of the fixed plate is fixedly installed with fixed seat, the inside of the fixed seat is rotatably connected with lead screw, the outside of the lead screw is engaged with output gear, the bottom of the fixed seat is provided with mounting hole, both ends of the lead screw are rotatably connected with connecting piece, the upper side of the connecting piece is fixedly installed with mechanical arm assembly.

2. The horizontal linear translation mechanism of the robotic arm according to claim 1, wherein: The upper side of the fixed plate is fixedly installed with guide rail, the bottom of the mechanical arm assembly is provided with sliding slot, the sliding slot is slidably connected with guide rail.

3. The horizontal linear translation mechanism of the robotic arm of claim 1, wherein: The base is inverse direction L shape, the support plate has two, two support plates are triangular, and two support plates are located on the right side of the base.

4. The robotic arm horizontal linear translation mechanism of claim 1, wherein: The air hole is located in the middle of the driving gear, and the air hole is located in the middle of two support plates, the driving gear is located directly below the output gear.

5. The horizontal linear translation mechanism of the robotic arm of claim 1, wherein: The output gear is rotatably connected with fixed seat, and the fixed seat is concave, the output gear is located in the inside of fixed seat.

6. The robotic arm horizontal linear translation mechanism of claim 1, wherein: The connecting piece has two, two connecting pieces are located on the left and right sides of the fixed plate, and two connecting pieces are on the same parallel line with the fixed seat.

7. The robotic arm horizontal linear translation mechanism of claim 1, wherein: The inside of the output gear is fixedly installed with nut, the nut is engaged with lead screw, the nut is located on the outside of the lead screw, the output gear is located above the mounting hole.

8. The horizontal linear translation mechanism of the robotic arm of claim 2, wherein: The guide rail and sliding slot have two, two guide rails and two sliding slots are located on the upper side of the fixed plate, and two sliding slots are slidably connected with two guide rails respectively.

Images