Drilling and milling clamp for machining small arm of robot

Abstract

The utility model discloses a drilling and milling fixture for processing a robot forearm, which relates to the field of robot forearm processing and comprises a bottom plate, two support rods are mounted on two sides of the top of the bottom plate, sliding seats are sleeved on the outer walls of the plurality of support rods, and clamping seats are arranged among the plurality of sliding seats. Through the arrangement of the inflation assembly, when small arms with different diameters are clamped, after the clamping base moves downwards and the arc-shaped groove in the bottom of the clamping base is attached to the small arms, the rotating sleeve can be rotated downwards at the moment, the rotating sleeve drives the movable base to move downwards, then the movable base drives the connecting rod to move downwards, the pressing plate is driven to move downwards, and the pressing plate extrudes the compression air bag; after the compressed air bag is compressed, air in the compressed air bag enters the air pipe and enters the air bag cushion through the air pipe, at the moment, the air bag cushion is expanded, the air bag cushion can be tightly attached to the forearm, the contact area of the forearm and the air bag cushion is increased, and therefore the clamping effect on the forearm is improved, the forearm is prevented from moving freely, and the applicability of the clamp is improved.

Description

Technical Field

[0001] The utility model relates to the field of robot forearm processing, in particular to a drilling and milling fixture for robot forearm processing. Background Art

[0002] The robot can imitate certain movements and functions of human hands and arms to grab, move objects or operate tools according to fixed procedures. It is widely used in various fields such as production and manufacturing, warehouse management, and smart care. The robot can save workers, improve efficiency, reduce costs, improve product quality, and have good safety. The robot is generally composed of a structure with multiple arms connected to each other. In the process of processing the robot's forearm, a drilling and milling fixture is required to clamp and fix the forearm through the fixture to facilitate subsequent processing of the forearm.

[0003] According to the Chinese patent with publication number CN208759052U, a small arm drilling and milling fixture is disclosed. The utility model adopts an arc-shaped upper pressure plate and a "V"-shaped support plate as clamping parts to prevent the cylindrical small arm from being deformed due to excessive pressure during the positioning and clamping process. The head and tail are subjected to multi-faceted forces, and the cylindrical robot small arm with non-uniform contact surfaces can be tightly clamped. It is easy to operate and has low manufacturing cost.

[0004] In response to the above-mentioned disclosed patent content, an arc-shaped upper pressure plate and a "V"-shaped support plate are provided, and the arc-shaped upper pressure plate is moved downward to clamp the forearm. However, when clamping a forearm with a smaller diameter, only a small part of the top of the forearm can contact the arc-shaped upper pressure plate, resulting in a smaller contact area between the arc-shaped upper pressure plate and the forearm, making it difficult to clamp the forearm firmly and reducing the clamping effect of the forearm. Utility Model Content

[0005] Based on this, the purpose of the utility model is to provide a drilling and milling fixture for processing a robot forearm, so as to solve the technical problem of poor clamping effect on a forearm with a smaller diameter.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a drilling and milling fixture for robot forearm processing, comprising a base plate, two support rods are installed on both sides of the top of the base plate, and the outer walls of multiple support rods are sleeved with sliding seats, a clamping seat is provided between the multiple sliding seats, and an arc groove is provided at the bottom of the clamping seat, and an inflatable component is provided inside the clamping seat, the inflatable component comprises a threaded column fixed at the middle position of the top of the clamping seat, a cavity opened in the clamping seat and an airbag cushion provided on the inner wall of the arc groove, a compressed airbag is installed at the lower part of the cavity, and a pressure plate is provided on the top of the compressed airbag, the outer walls of the threaded column are respectively sleeved with a rotating sleeve and a movable seat, and connecting rods penetrating into the cavity are installed on both sides of the bottom of the movable seat, and multiple air pipes are connected between the compressed airbag and the airbag cushion.

[0007] By adopting the above technical solution, after the compressed airbag is compressed, the air inside it will enter the trachea, and then enter the airbag cushion through the trachea, and the airbag cushion will expand.

[0008] Furthermore, the bottom end of the connecting rod is connected to the top of the pressing plate, and the pressing plate is slidably connected to the cavity.

[0009] By adopting the above technical solution, when the movable seat moves downward, it will drive the connecting rod to move downward, and the connecting rod will drive the pressure plate to move downward, so that the pressure plate squeezes the compressed airbag.

[0010] Furthermore, a movable groove is provided on the top of the movable seat, and a plurality of movable blocks are arranged inside the movable groove, and the top of the movable block is connected to the bottom of the rotating sleeve.

[0011] By adopting the above technical solution, when the rotating sleeve rotates and moves, it will drive the movable block to move, and drive the movable seat to move, so that the movable seat can move simultaneously with the rotating sleeve.

[0012] Furthermore, the movable groove is in a ring shape, and the movable block is slidably connected to the movable groove.

[0013] By adopting the above technical solution, the movable block can slide inside the movable groove, so as to improve the stability of the rotating sleeve when rotating.

[0014] Furthermore, the inner wall of the rotating sleeve is provided with threads, and the rotating sleeve is threadedly connected to the threaded column.

[0015] By adopting the above technical solution, the rotating sleeve can be moved downward when the user rotates the rotating sleeve.

[0016] Furthermore, a top plate is fixed to the top of the support rod, a hydraulic cylinder is installed on the top of the top plate, and an output end of the hydraulic cylinder is fixedly connected to the top of the threaded column through a piston rod.

[0017] By adopting the above technical solution, when the mechanical arm needs to be clamped, the hydraulic cylinder can be started, and the operation of the hydraulic cylinder can extend the piston rod, thereby driving the threaded column to move downward.

[0018] Furthermore, a support seat is installed on the top of the base plate, and a V-shaped groove is opened on the top of the support seat.

[0019] By adopting the above technical solution, the support seat can support the mechanical arm, and the setting of the V-shaped groove makes it easy for the mechanical arm to be placed inside it.

[0020] Furthermore, the card seat is slidably connected to the support rod via a slide seat, and the support seat is located directly below the card seat.

[0021] By adopting the above technical solution, when the card seat moves, it will drive the sliding seat to slide on the support rod, thereby improving the stability of the card seat when moving.

[0022] Furthermore, the thickness of the compressed airbag is greater than the thickness of the airbag cushion, and the airbag cushion is arc-shaped.

[0023] By adopting the above technical solution, sufficient air inside the compressed airbag can enter the airbag cushion, thereby enabling the airbag cushion to expand.

[0024] Furthermore, the top of the movable seat fits with the bottom of the rotating sleeve, and the movable seat is slidably connected to the threaded column.

[0025] By adopting the above technical solution, when the rotating sleeve moves downward, it can drive the movable seat to move downward, and the threaded column can guide the movable seat.

[0026] In summary, the utility model mainly has the following beneficial effects:

[0027] The utility model is provided with an inflation component, when clamping forearms of different diameters, after the clamping seat moves downward and the arc-shaped groove at the bottom thereof fits with the forearm, the rotating sleeve can be rotated downward at this time, so that the rotating sleeve drives the movable seat to move downward, and the movable seat then drives the connecting rod to move downward, drives the pressure plate to move downward, and the pressure plate squeezes the compressed airbag. After the compressed airbag is compressed, the air inside the compressed airbag will enter the trachea and enter the airbag cushion through the trachea. At this time, the airbag cushion expands, so that the airbag cushion can fit closely with the forearm and increase the contact area between the forearm and the airbag cushion, thereby improving the clamping effect of the forearm and preventing the forearm from moving at will. In this way, forearms of different diameters can be clamped, and the applicability of the clamp is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0029] Figure 2 It is a schematic diagram of the overall front section structure of the utility model;

[0030] Figure 3 This is a schematic diagram of the structure of the airbag cushion of the utility model when viewed from above;

[0031] Figure 4 It is a schematic diagram of the three-dimensional structure of the rotating sleeve of the utility model;

[0032] Figure 5 For the utility model Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0033] In the figure: 1, bottom plate; 2, support rod; 3, support seat; 4, V-shaped groove; 5, top plate; 6, hydraulic cylinder; 7, slide seat; 8, holder; 9, inflation assembly; 901, threaded column; 902, cavity; 903, pressure plate; 904, compressed air bag; 905, air pipe; 906, air bag cushion; 907, rotating sleeve; 908, movable seat; 909, movable block; 910, movable groove; 911, connecting rod; 10, arc groove. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0035] The following describes an embodiment of the utility model based on its overall structure.

[0036] Embodiment 1:

[0037] A drilling and milling fixture for robot arm machining, such as Figure 1-Figure 5 As shown, it includes a bottom plate 1, two support rods 2 are installed on both sides of the top of the bottom plate 1, and the outer walls of the multiple support rods 2 are sleeved with slide seats 7, a clamping seat 8 is provided between the multiple slide seats 7, and an arc groove 10 is opened at the bottom of the clamping seat 8, and an inflatable component 9 is provided inside the clamping seat 8, a top plate 5 is fixed to the top of the support rod 2, and a hydraulic cylinder 6 is installed on the top of the top plate 5. The output end of the hydraulic cylinder 6 is fixedly connected to the top of the threaded column 901 through a piston rod. When the mechanical arm needs to be clamped, the hydraulic cylinder 6 can be started. Cylinder 6, the operation of hydraulic cylinder 6 can extend the piston rod, thereby driving the threaded column 901 to move downward, a support seat 3 is installed on the top of the base plate 1, and a V-shaped groove 4 is opened on the top of the support seat 3. The support seat 3 can support the mechanical arm, and the setting of the V-shaped groove 4 is convenient for the mechanical arm to be placed inside it. The base 8 is slidably connected to the support rod 2 through the slide 7. The support seat 3 is located directly below the base 8. When the base 8 moves, it will drive the slide 7 to slide on the support rod 2, thereby improving the stability of the base 8 when moving.

[0038] Specifically, the inflation component 9 includes a threaded column 901 fixed at the middle position of the top of the holder 8, a cavity 902 opened inside the holder 8 and an airbag cushion 906 arranged on the inner wall of the arc groove 10, a compressed airbag 904 is installed at the lower part of the cavity 902, and a pressure plate 903 is provided on the top of the compressed airbag 904, the thickness of the compressed airbag 904 is greater than the thickness of the airbag cushion 906, and the airbag cushion 906 is arc-shaped so that enough air from the compressed airbag 904 can enter the airbag cushion 906, thereby allowing the airbag cushion 906 to expand, and the outer walls of the threaded column 901 are respectively sleeved with a rotating sleeve 907 and a movable seat 908, and the top of the movable seat 908 is in contact with the bottom of the rotating sleeve 907.

[0039] Specifically, the movable seat 908 is slidably connected to the threaded column 901, and connecting rods 911 that penetrate into the cavity 902 are installed on both sides of the bottom of the movable seat 908. Multiple air pipes 905 are connected between the compressed airbag 904 and the airbag cushion 906. After the compressed airbag 904 is compressed, the air inside it will enter the air pipe 905 and enter the airbag cushion 906 through the air pipe 905. At this time, the airbag cushion 906 expands, and the inner wall of the rotating sleeve 907 is provided with threads. The rotating sleeve 907 is threadedly connected to the threaded column 901, so that when the user rotates the rotating sleeve 907, the rotating sleeve 907 can move downward, and the bottom end of the connecting rod 911 is connected to the top of the pressure plate 903, and the pressure plate 903 is slidably connected to the cavity 902. When the movable seat 908 moves downward, it will drive the connecting rod 911 to move downward, and the connecting rod 911 will drive the pressure plate 903 to move downward, so that the pressure plate 903 squeezes the compressed airbag 904.

[0040] Embodiment 2:

[0041] On the basis of the above-mentioned embodiment 1, in order to facilitate the movement of the rotating sleeve 907 and simultaneously drive the movable seat 908 to move, the following structure is provided.

[0042] See also Figure 4-Figure 5 A movable groove 910 is provided at the top of the movable seat 908, and a plurality of movable blocks 909 are arranged inside the movable groove 910. The top of the movable block 909 is connected to the bottom of the rotating sleeve 907. When the rotating sleeve 907 rotates and moves, it will drive the movable block 909 to move and drive the movable seat 908 to move, so that the movable seat 908 can move simultaneously with the rotating sleeve 907. The movable groove 910 is ring-shaped, and the movable block 909 is slidably connected to the movable groove 910, so that the movable block 909 can slide inside the movable groove 910 to improve the stability of the rotating sleeve 907 when it rotates.

[0043] The working principle of the utility model is as follows: first, the staff can install the drilling and milling fixture and turn on the power supply, then put the forearm to be processed into the V-shaped groove 4, and then start the hydraulic cylinder 6 to extend the piston rod, thereby driving the threaded column 901 to move downward, and the threaded column 901 drives the clamping seat 8 to move downward, so that the bottom of the clamping seat 8 contacts the forearm, thereby achieving the purpose of clamping the forearm;

[0044] And when the diameter of the forearm is smaller than the diameter of the arc groove 10, when the holder 8 moves down and fits with the forearm, the staff can rotate the rotating sleeve 907 downward to move the rotating sleeve 907 downward, and drive the movable block to move downward, and then drive the movable seat 908 to move downward, and the movable seat 908 drives the connecting rod 911 to move downward, and drives the pressure plate 903 to move downward, and the pressure plate 903 squeezes the compressed airbag 904. After the compressed airbag 904 is compressed, the air inside it will enter the trachea 905 and enter the airbag cushion 906 through the trachea 905. At this time, the airbag cushion 906 expands, so that the airbag cushion 906 can fit closely with the forearm, and increase the contact area between the forearm and the airbag cushion, so as to facilitate the clamping of the forearm with a smaller diameter.

[0045] Although an embodiment of the utility model has been shown and described, this specific embodiment is only an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contribution as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A drilling and milling fixture for robot arm machining, comprising a base plate (1), characterized in that: Two support rods (2) are installed on both sides of the top of the base plate (1), and the outer walls of the plurality of support rods (2) are sleeved with slide seats (7), a clamping seat (8) is provided between the plurality of slide seats (7), and an arc groove (10) is provided at the bottom of the clamping seat (8), and an inflatable component (9) is provided inside the clamping seat (8), and the inflatable component (9) comprises a threaded column (901) fixed at the middle position of the top of the clamping seat (8), a cavity (902) provided inside the clamping seat (8), and a gas-filled ... An airbag cushion (906) is arranged on the inner wall, a compressed airbag (904) is installed at the lower part of the cavity (902), and a pressure plate (903) is arranged on the top of the compressed airbag (904), a rotating sleeve (907) and a movable seat (908) are respectively sleeved on the outer wall of the threaded column (901), and connecting rods (911) penetrating into the cavity (902) are installed on both sides of the bottom of the movable seat (908), and a plurality of air pipes (905) are connected between the compressed airbag (904) and the airbag cushion (906).

2. The drilling and milling fixture for robot arm machining according to claim 1, characterized in that: The bottom end of the connecting rod (911) is connected to the top of the pressing plate (903), and the pressing plate (903) is slidably connected to the cavity (902).

3. The drilling and milling fixture for robot arm machining according to claim 1, characterized in that: The top of the movable seat (908) is provided with a movable groove (910), and a plurality of movable blocks (909) are arranged inside the movable groove (910), and the top of the movable block (909) is connected to the bottom of the rotating sleeve (907).

4. A drilling and milling fixture for robot arm machining according to claim 3, characterized in that: The movable groove (910) is in a ring shape, and the movable block (909) is slidably connected to the movable groove (910).

5. The drilling and milling fixture for robot arm machining according to claim 1, characterized in that: The inner wall of the rotating sleeve (907) is provided with threads, and the rotating sleeve (907) is threadedly connected to the threaded column (901).

6. The drilling and milling fixture for robot arm machining according to claim 1, characterized in that: A top plate (5) is fixed to the top of the support rod (2), a hydraulic cylinder (6) is installed on the top of the top plate (5), and an output end of the hydraulic cylinder (6) is fixedly connected to the top of the threaded column (901) via a piston rod.

7. The drilling and milling fixture for robot arm machining according to claim 1, characterized in that: A support seat (3) is installed on the top of the bottom plate (1), and a V-shaped groove (4) is provided on the top of the support seat (3).

8. The drilling and milling fixture for robot arm machining according to claim 7, characterized in that: The clamping seat (8) is slidably connected to the support rod (2) via a sliding seat (7), and the support seat (3) is located directly below the clamping seat (8).

9. The drilling and milling fixture for robot arm machining according to claim 1, characterized in that: The thickness of the compressed airbag (904) is greater than the thickness of the airbag cushion (906), and the airbag cushion (906) is arc-shaped.

10. The drilling and milling fixture for robot arm machining according to claim 1, characterized in that: The top of the movable seat (908) is fitted with the bottom of the rotating sleeve (907), and the movable seat (908) is slidably connected to the threaded column (901).

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