Robot variable-speed lead screw transmission mechanism

Abstract

The utility model discloses a robot speed change lead screw transmission mechanism which comprises a fixing seat and a sliding table, the sliding table is placed on the fixing seat, one end of the fixing seat protrudes to form a clamping part, a U-shaped groove is formed in one side face of the fixing seat, threads are arranged on the inner wall face of the U-shaped groove, a lead screw and the fixing seat which are connected with the threads in a meshed mode are arranged in the U-shaped groove, and the fixing seat is arranged on the fixing seat. One end of the fixing seat is provided with a variable-speed motor driving the lead screw motor, the fixing seat is provided with a limiting plate, and a limiting channel allowing the sliding table to transversely move is formed between the limiting plate and the fixing seat. The clamping device is simple in structure, the sliding block is provided with the clamping part, the clamping force can be controlled more accurately through the lead screw, the sliding block and the lead screw are convenient to install, and after the sliding block moves to a certain distance, the sliding block can be directly separated from the lead screw, and replacement of the sliding block is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of robot technology, specifically to a robot variable speed lead screw transmission mechanism. Background Technology

[0002] A robot is an intelligent machine capable of semi-autonomous or fully autonomous operation. Robots can perform tasks such as operations or movement through programming and automatic control.

[0003] Currently, a large number of robots are used in the industrial field. In the industrial field, grippers are installed on the robot's arms. However, the extension and retraction of the grippers are generally accomplished by cylinders. The installation between the cylinder and the gripper is relatively complicated, and the extension and retraction accuracy of the cylinder is not easy to control, which affects the control quality. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a robot variable speed lead screw transmission mechanism, in which the slider has a built-in clamping part, and the clamping force can be controlled more precisely through the lead screw, so as to solve the problems mentioned in the background art.

[0005] This utility model is achieved through the following technical solution: a robot variable speed lead screw transmission mechanism, including a fixed base and a slide table. The slide table is placed on the fixed base. One end of the fixed base protrudes to form a clamping part. A U-shaped groove is provided on one side of the fixed base. Threads are provided on the inner wall of the U-shaped groove. A lead screw that meshes with the threads is provided in the U-shaped groove. A variable speed motor that drives the lead screw motor is installed at one end of the fixed base. A limit plate is installed on the fixed base. A limit channel for the lateral movement of the slide table is formed between the limit plate and the fixed base.

[0006] As a preferred technical solution, one side of the slide table is provided with lower positioning grooves on both sides of the U-shaped groove, and the inner side of the fixed seat is provided with lower positioning rods facing the lower positioning grooves. The lower positioning rods are all slidably set in the lower positioning grooves. The other side of the slide table is provided with multiple upper positioning grooves, and the inner side of the limiting plate is provided with upper positioning rods facing the upper positioning grooves. The upper positioning rods are all slidably set in the upper positioning grooves.

[0007] As a preferred technical solution, the lower positioning rod is provided with a plurality of first ball grooves on the side facing the slider and the opposite side. A first ball is movably installed inside the first ball groove. A part of the first ball extends to the outside through the opening of the first ball groove and is in contact with the inner wall surface of the lower positioning groove.

[0008] As a preferred technical solution, multiple second ball grooves are provided on the side of the upper positioning rod facing the slider. A second ball is movably installed inside each of the second ball grooves. A part of each second ball extends to the outside through the opening of the second ball groove and is in contact with the inner wall of the upper positioning groove.

[0009] As a preferred technical solution, the two sides of the slider are configured not to contact the inner sides of the fixed seat and the limiting plate.

[0010] As a preferred technical solution, a sealed bearing is embedded in one end of the fixed base, and the other end of the lead screw is installed in the inner ring of the sealed bearing and fixedly connected to the shaft of the variable speed motor.

[0011] As a preferred technical solution, one end of the mounting base is provided with multiple mounting holes for connecting to the machine arm.

[0012] The advantages of this utility model are: the utility model has a simple structure, the slider has its own clamping part, and the clamping force can be controlled more precisely through the lead screw. Furthermore, the installation between the slider and the lead screw is convenient. After the slider moves to a certain distance, the slider can be directly detached from the lead screw, which facilitates its replacement. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a side view of the present invention;

[0016] Figure 3 This is a schematic diagram of the structure of this utility model after the slider is removed;

[0017] Figure 4 This is a schematic diagram of the slider of this utility model.

[0018] The components are: 1. Fixed base; 2. Slide table; 3. Clamping part; 4. U-shaped groove; 5. Thread; 6. Lower positioning rod; 7. Second ball; 8. Upper positioning groove; 9. Upper positioning rod; 10. Limiting plate; 11. Lead screw; 12. Second ball; 13. Variable speed motor; 14. Lower positioning groove. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0020] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0021] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features for a similar purpose, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0022] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a robot variable speed lead screw transmission mechanism of this utility model includes a fixed base 1 and a slide 2. The slide 2 is placed on the fixed base 1. One end of the fixed base 1 protrudes to form a clamping part 3. A U-shaped groove 4 is provided on one side surface of the fixed base 1. A thread 5 is provided on the inner wall surface of the U-shaped groove 4. A lead screw 11 is provided in the U-shaped groove 4 and meshes with the thread 5. A variable speed motor 13 that drives the motor of the lead screw 11 is installed at one end of the fixed base 1. A limit plate 10 is installed on the fixed base 1. A limit channel for the slide 2 to move laterally is formed between the limit plate 10 and the fixed base 1.

[0023] In this embodiment, a lower positioning groove 14 is provided on one side of the slide table 2 on both sides of the U-shaped groove 4. A lower positioning rod 6 is installed on the inner side of the fixed seat 1, which is directly opposite the lower positioning groove 14. The lower positioning rod 6 is slidably disposed in the lower positioning groove 14. A plurality of upper positioning grooves 8 are provided on the other side of the slide table 2. An upper positioning rod 9 is installed on the inner side of the limiting plate 10, which is directly opposite the upper positioning groove 8. The upper positioning rod 9 is slidably disposed in the upper positioning groove 8.

[0024] The upper and lower positioning rods increase the longitudinal stability of the slider, preventing it from detaching directly from the limiting channels.

[0025] In this embodiment, the lower positioning rod 6 is provided with a plurality of first ball grooves on one side facing the slider and the opposite side. A first ball is movably installed inside each of the first ball grooves. A part of the first ball extends to the outside through the opening of the first ball groove and is in contact with the inner wall surface of the lower positioning groove 14.

[0026] In this embodiment, the upper positioning rod 9 is provided with a plurality of second ball grooves on the side facing the slider. A second ball 12 is movably installed inside the second ball groove. A part of the second ball 12 extends to the outside through the opening of the second ball groove and is in contact with the inner wall surface of the upper positioning groove 8.

[0027] The first and second spheres prevent the slider, the limiting plate, and the fixed seat from contacting each other, and the rolling of the first and second spheres increases the smoothness of pushing the slider.

[0028] In this embodiment, the two sides of the slider are not in contact with the inner sides of the fixed seat 1 and the limiting plate 10, which avoids friction between the slider and the limiting plate and the fixed seat, and facilitates pushing the slider.

[0029] In this embodiment, a sealed bearing is embedded in one end of the fixed base 1, and one end of the lead screw 11 is installed in the inner ring of the sealed bearing and is fixedly connected to the shaft of the variable speed motor 13.

[0030] In this embodiment, one end of the fixing base 1 is provided with a plurality of fixing holes for connecting with the machine arm, so that bolts can pass through the fixing holes to mount the device on the machine arm.

[0031] The fixed base can be installed on the robot's arm with bolts. There are usually two of these devices, which are installed on the robot's arms on both sides. When in use, the variable speed motor can be started. The start of the variable speed motor drives the lead screw. The rotation of the lead screw drives the screw thread and the slider, so that the slider can move outward along the upper and lower positioning rods. The close-fitting slider can clamp and fix the object.

[0032] In this process, after the lead screw rotates and drives the slider to move a certain distance, the slider will move out from between the fixed seat and the limiting plate. At this time, the slider can be directly removed from the lead screw, making it easy to disassemble and install sliders with different clamping parts, thus increasing adaptability.

[0033] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope defined in the claims.

Claims

1. A robot variable speed leadscrew drive mechanism, characterized by: The device includes a fixed base (1) and a slide (2). The slide (2) is placed on the fixed base (1). One end of the fixed base (1) protrudes to form a clamping part (3). A U-shaped groove (4) is provided on one side of the fixed base (1). A thread (5) is provided on the inner wall of the U-shaped groove (4). A lead screw (11) that meshes with the thread (5) is provided in the U-shaped groove (4). The fixed base (1) has a variable speed motor (13) that drives the motor of the lead screw (11) installed at one end. A limit plate (10) is installed on the fixed base (1). A limit channel for the slide (2) to move laterally is formed between the limit plate (10) and the fixed base (1).

2. The robot variable speed lead screw transmission mechanism according to claim 1, characterized in that: The slide (2) has a lower positioning groove (14) on one side of the U-shaped groove (4). The inner side of the fixed seat (1) is equipped with a lower positioning rod (6) facing the lower positioning groove (14). The lower positioning rod (6) is slidably set in the lower positioning groove (14). The other side of the slide (2) has multiple upper positioning grooves (8). The inner side of the limiting plate (10) is equipped with an upper positioning rod (9) facing the upper positioning groove (8). The upper positioning rod (9) is slidably set in the upper positioning groove (8).

3. The robotic variable-speed leadscrew drive of claim 2, wherein: Multiple first ball grooves are provided on the side of the lower positioning rod (6) facing the slider and the opposite side. A first ball is movably installed inside each first ball groove. A part of the first ball extends to the outside through the opening of the first ball groove and is in contact with the inner wall of the lower positioning groove (14).

4. The robot variable speed lead screw transmission mechanism according to claim 2, characterized in that: Multiple second ball grooves are provided on the side of the upper positioning rod (9) facing the slider. A second ball (12) is movably installed inside each second ball groove. A part of the second ball (12) extends to the outside through the opening of the second ball groove and is in contact with the inner wall of the upper positioning groove (8).

5. The robot variable speed lead screw transmission mechanism according to claim 1, characterized in that: The two sides of the slider are not in contact with the inner sides of the fixed seat (1) and the limiting plate (10).

6. The robotic variable-speed leadscrew drive of claim 1, wherein: A sealed bearing is embedded in one end of the fixed base (1), and one end of the lead screw (11) is installed in the inner ring of the sealed bearing and is fixedly connected to the shaft of the variable speed motor (13).

7. The robot variable speed lead screw transmission mechanism according to claim 1, characterized in that: One end of the mounting base (1) is provided with multiple mounting holes for connecting with the machine arm.

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