External manipulator structure of machine tool

Abstract

The utility model discloses an external manipulator structure of a machine tool, which relates to the technical field of machine tool manipulators, and is technically characterized by comprising a mechanical arm, a mechanical claw and a connecting component, and the mechanical claw is detachably mounted at the tail end of the mechanical arm through the connecting component. The connecting assembly comprises a connecting block hinged to the tail end of the mechanical claw and a connecting column fixedly connected to the top of the mechanical claw, the top of the connecting column is fixedly connected with a connecting sleeve, the bottom of the connecting block is sleeved with the connecting sleeve, and four annularly-distributed positioning grooves are formed in the inner wall of the connecting sleeve; positioning columns matched with the positioning grooves are slidably mounted on the periphery of the connecting block, a screw rod is rotatably mounted in the connecting block, a driving part is arranged at the upper end of the screw rod, a sliding block is in threaded connection with the screw rod, and connecting rods are hinged between the sliding block and the positioning columns. The mechanical gripper has the technical effects that by arranging the connecting assembly, a large number of bolts are not needed, replacement of the mechanical gripper is facilitated, and the replacement efficiency of the mechanical gripper is improved.

Description

Technical Field

[0001] This utility model relates to the field of machine tool robot technology, specifically to an external robot structure for machine tools. Background Technology

[0002] A CNC machine tool is an automated machine tool equipped with a program control system, capable of moving and machining parts according to a pre-programmed sequence. CNC machine tools integrate mechanical, automation, computer, and microelectronic technologies, solving the problem of machining complex, precision, and small-batch parts. They are flexible and highly efficient automated machine tools. External robotic arms are often used in some CNC machine tools.

[0003] In the existing technology, since CNC machine tools can process a wide variety of parts, it is usually necessary to change to a suitable mechanical gripper when processing parts of different shapes. However, most existing mechanical grippers are fixed to the end of the robotic arm with a large number of bolts. When changing the mechanical gripper, it is necessary to frequently disassemble and reassemble the bolts, which makes the operation very troublesome and affects the efficiency of changing the mechanical gripper.

[0004] Therefore, we propose an external robot arm structure for machine tools. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides an external robotic arm structure for machine tools, which solves the problem that most existing robotic grippers are fixed to the end of the robotic arm with a large number of bolts. When replacing the robotic gripper, it is necessary to frequently disassemble and reassemble the bolts, which makes the operation very troublesome and affects the replacement efficiency of the robotic gripper.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: an external robot arm structure for machine tools, comprising a robot arm, a robot claw, and a connecting assembly, wherein the robot claw is detachably mounted on the end of the robot arm via the connecting assembly;

[0009] The connecting assembly includes a connecting block hinged to the end of the mechanical claw and a connecting post fixedly connected to the top of the mechanical claw. A connecting sleeve is fixedly connected to the top of the connecting post, and the connecting sleeve is fitted onto the bottom of the connecting block. Four annularly distributed positioning grooves are formed on the inner wall of the connecting sleeve. Positioning posts that are adapted to the positioning grooves are slidably installed around the circumference of the connecting block. A cavity is formed inside the connecting block, and a screw is rotatably installed in the cavity. A driving component is provided at the upper end of the screw, and a slider is threadedly connected to the screw. A connecting rod is hinged between the slider and the positioning post.

[0010] Preferably, the bottom of the robotic arm is provided with a mounting base.

[0011] Preferably, a guide block is provided on one side of the connecting block, and a guide groove adapted to the guide block is provided on one side of the connecting sleeve.

[0012] Preferably, the driving component includes a worm gear rotatably mounted in the cavity, a nut fixedly connected to one end of the worm gear, and a worm wheel fixedly connected to the upper end of the nut gear, wherein the worm gear meshes with the worm wheel.

[0013] Preferably, the nut is a hexagonal nut, and the surface of the nut has an internal hexagonal groove.

[0014] Preferably, a groove is provided on one side of the connecting block, and the nut is located in the groove.

[0015] Preferably, a cover plate is hinged to the opening of the groove.

[0016] Preferably, a guide rail is provided on the inner wall of the cavity, and the slider is slidably connected to the guide rail.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, this utility model provides an external robot arm structure for machine tools, which has the following beneficial effects:

[0019] 1. This utility model, by setting a connecting component, places the connecting sleeve on the connecting block, and then operates the driving component to drive the screw to rotate, causing the screw to drive the slider to slide down the guide rail. The slider, through the connecting rod, drives the positioning pin to insert into the positioning groove, thus installing the mechanical claw. When replacing the mechanical claw, simply operate the driving component to move the positioning pin out of the positioning groove, and the mechanical claw can be removed, which facilitates the replacement of the mechanical claw and improves the replacement efficiency.

[0020] 2. By setting up a driving component, this utility model only requires rotating the nut to rotate the worm gear, which in turn drives the worm wheel, which in turn drives the screw, thus reducing the number of operation steps. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the connecting component of this utility model;

[0023] Figure 3 This is a cross-sectional structural diagram of the connecting component of this utility model.

[0024] In the picture:

[0025] 1. Robotic arm; 11. Mounting base;

[0026] 2. Mechanical gripper;

[0027] 3. Connecting assembly; 31. Connecting block; 32. Connecting post; 33. Connecting sleeve; 34. Positioning groove; 35. Positioning post; 36. Screw; 37. Driving component; 371. Worm gear; 372. Nut; 373. Worm wheel; 374. Socket hexagonal groove; 38. Slider; 39. Connecting rod; 310. Guide block; 311. Guide groove; 312. Groove; 313. Cover plate; 314. Guide rail. Detailed Implementation

[0028] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0029] This utility model provides a technical solution:

[0030] Please see Figures 1-3 The external robotic arm structure for a machine tool includes a robotic arm 1, a robotic gripper 2, and a connecting assembly 3. A mounting base 11 is provided at the bottom of the robotic arm 1, allowing it to be fixed to the outside of the machine tool. The robotic gripper 2 is detachably mounted to the end of the robotic arm 1 via the connecting assembly 3. The connecting assembly 3 includes a connecting block 31 hinged to the end of the robotic gripper 2 and a connecting post 32 fixedly connected to the top of the robotic gripper 2. A connecting sleeve 33 is fixedly connected to the top of the connecting post 32, and the connecting sleeve 33 fits onto the bottom of the connecting block 31. Four annularly distributed positioning grooves 34 are formed on the inner wall of the connecting sleeve 33. Positioning posts 35, which are adapted to the positioning grooves 34, are slidably mounted around the connecting block 31. A cavity is formed inside the connecting block 31, and a screw 36 is rotatably mounted within the cavity. A drive mechanism is provided at the upper end of the screw 36. The component 37 has a slider 38 threadedly connected to the screw 36. A guide rail 314 is provided on the inner wall of the cavity. The slider 38 is slidably connected to the guide rail 314. A connecting rod 39 is hinged between the slider 38 and the positioning post 35. By setting the connecting assembly 3, the connecting sleeve 33 is put on the connecting block 31. Then, the driving component 37 is operated to drive the screw 36 to rotate, causing the screw 36 to drive the slider 38 to slide down along the guide rail 314. The slider 38 drives the positioning post 35 to insert into the positioning groove 34 through the connecting rod 39, so that the mechanical claw 2 can be installed. When replacing the mechanical claw 2, only the driving component 37 needs to be operated to drive the positioning post 35 to move out of the positioning groove 34, so that the mechanical claw 2 can be removed. This facilitates the replacement of the mechanical claw 2 and improves the replacement efficiency of the mechanical claw 2.

[0031] The connecting block 31 has a guide block 310 on one side, and the connecting sleeve 33 has a guide groove 311 on one side that is compatible with the guide block 310. By setting the guide block 310 and the guide groove 311, the connecting sleeve 33 and the connecting block 31 can be quickly guided when connecting them.

[0032] Specifically, the driving component 37 includes a worm 371 rotatably mounted in the cavity, a nut 372 fixedly connected to one end of the worm 371, and a worm wheel 373 fixedly connected to the upper end of the screw 36. The worm 371 meshes with the worm wheel 373. By setting the driving component 37, when operating the driving component 37, it is only necessary to rotate the nut 372, so that the nut 372 drives the worm 371 to rotate, so that the worm 371 drives the worm wheel 373 to rotate, so that the worm wheel 373 drives the screw 36 to rotate, thus reducing the number of operation steps.

[0033] Furthermore, the nut 372 is a hexagonal nut, and the surface of the nut 372 is provided with an internal hexagonal groove 374. By setting the hexagonal nut and the internal hexagonal groove 374, it is convenient to use a variety of tools to rotate the nut 372.

[0034] Furthermore, a groove 312 is provided on one side of the connecting block 31, and the nut 372 is located in the groove 312. A cover plate 313 is hinged at the opening of the groove 312. By setting the groove 312 and the cover plate 313, the nut 372 can be protected.

[0035] In practical use, the working principle of this utility model is as follows:

[0036] First, when installing the robotic gripper 2, align the guide block 310 with the guide groove 311, put the connecting sleeve 33 on the connecting block 31, and then rotate the nut 372 to make the nut 372 drive the worm 371 to rotate, which in turn drives the worm wheel 373 to rotate, which in turn drives the screw 36 to rotate, which in turn drives the slider 38 to slide down along the guide rail 314, so that the slider 38 drives the positioning pin 35 to insert into the positioning groove 34 through the connecting rod 39, and the robotic gripper 2 can be installed.

[0037] When replacing the mechanical claw 2, simply rotate the nut 372 in the reverse direction to remove the positioning pin 35 from the positioning groove 34, and the mechanical claw 2 can be removed, which facilitates the replacement of the mechanical claw 2 and improves the replacement efficiency of the mechanical claw 2.

[0038] In summary, the external robotic arm structure of this machine tool, by setting up the connecting component 3, eliminates the need for a large number of bolts, facilitating the replacement of the robotic gripper 2 and improving the replacement efficiency of the robotic gripper 2.

[0039] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. An external robotic arm structure for machine tools, comprising a robotic arm (1), a robotic gripper (2), and a connecting assembly (3), characterized in that: The mechanical gripper (2) is detachably mounted on the end of the mechanical arm (1) via a connecting assembly (3); The connecting assembly (3) includes a connecting block (31) hinged to the end of the mechanical claw (2) and a connecting post (32) fixedly connected to the top of the mechanical claw (2). A connecting sleeve (33) is fixedly connected to the top of the connecting post (32). The connecting sleeve (33) is fitted onto the bottom of the connecting block (31). Four annularly distributed positioning grooves (34) are provided on the inner wall of the connecting sleeve (33). Positioning posts (35) that are adapted to the positioning grooves (34) are slidably installed around the connecting block (31). A cavity is provided inside the connecting block (31). A screw (36) is rotatably installed in the cavity. A driving member (37) is provided at the upper end of the screw (36). A slider (38) is threadedly connected to the screw (36). A connecting rod (39) is hinged between the slider (38) and the positioning post (35).

2. The external robot arm structure for machine tools according to claim 1, characterized in that: The bottom of the robotic arm (1) is provided with a mounting base (11).

3. The external robot arm structure for machine tools according to claim 1, characterized in that: A guide block (310) is provided on one side of the connecting block (31), and a guide groove (311) adapted to the guide block (310) is provided on one side of the connecting sleeve (33).

4. The external robot arm structure for machine tools according to claim 1, characterized in that: The drive component (37) includes a worm (371) rotatably mounted in the cavity, a nut (372) fixedly connected to one end of the worm (371), and a worm wheel (373) fixedly connected to the upper end of the screw (36), wherein the worm (371) meshes with the worm wheel (373).

5. The external robot arm structure for machine tools according to claim 4, characterized in that: The nut (372) is a hexagonal nut, and the surface of the nut (372) is provided with an internal hexagonal groove (374).

6. The machine tool external robot structure according to claim 4, characterized in that: A groove (312) is provided on one side of the connecting block (31), and the nut (372) is located in the groove (312).

7. The external robot arm structure for machine tools according to claim 6, characterized in that: A cover plate (313) is hinged to the opening of the groove (312).

8. The machine tool external robot structure according to claim 1, characterized in that: The inner wall of the cavity is provided with a guide rail (314), and the slider (38) is slidably connected to the guide rail (314).

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