Linear guide rail type robot walking shaft

Abstract

The utility model relates to industrial robot auxiliary equipment technical field discloses a linear guide rail formula robot walking axle, including linear guide rail seat, the top of linear guide rail seat is provided with support sliding block, and the inside of support sliding block is oil storage cavity. That linear guide rail formula robot walking axle, through V type runner and V type slide surface's precision cooperation and oil storage cavity structure, realizes efficient self -lubricating and low friction operation, and the shape of V type runner of linear guide rail seat both sides and the V type slide surface of support sliding block inboard is in accord with, forms stable sliding guide structure, compared with traditional plane guide rail, its contact area is bigger and stress is even, can reduce single point wear, simultaneously, the oil storage cavity in the inside of support sliding block supplements lubricating oil through oil pipe, and the oil hole on V type slide surface evenly penetrates to sliding contact surface, forms continuous oil film, effectively reduces friction coefficient, prolongs equipment life, reduces maintenance frequency, is especially suitable for high frequency operation's industrial scene.

Description

Technical Field

[0001] This utility model relates to the field of industrial robot auxiliary equipment technology, specifically a linear guide robot walking axis. Background Technology

[0002] In modern industrial automated production, robots are being used more and more widely. However, the working range of traditional robots is usually limited by their own structure, making it difficult to meet the needs of large-scale operations. In order to expand the working range of robots, existing technologies often use a walking axis to achieve the linear movement of robots.

[0003] The existing patent document CN218255134U provides a linear guide rail type robot walking axis, which solves the current problem of not being able to effectively buffer and lubricate when the robot slides along the linear guide rail.

[0004] However, existing linear guide robot walking axes suffer from uneven lubrication, and the oil film is easily damaged during high-frequency operation. Traditional single-point lubrication methods are difficult to form a complete oil film on the guide surface, especially at corners and grooves, where lubrication dead zones are easily formed, leading to local dry friction and abnormal wear. In high-frequency reciprocating motion scenarios, the oil replenishment rate at fixed lubrication points is far lower than the surface renewal frequency of the friction pair, making it difficult for the oil film to remain stable. Excessive oil supply to maintain lubrication results in rapid oil loss, causing not only oil waste and environmental pollution, but also abrasive wear due to oil adsorption of particulate matter, which reduces the positioning accuracy of the equipment and significantly shortens its service life. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] The purpose of this invention is to provide a linear guide robot walking axis to solve the problems mentioned in the background art, such as uneven lubrication and easy damage to the oil film during high-frequency operation of existing linear guide robot walking axes.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a linear guide rail type robot walking axis, including a linear guide rail base, a support slider is provided above the linear guide rail base, the support slider has an oil storage cavity inside, V-shaped grooves are symmetrically machined on both sides of the linear guide rail base, V-shaped sliding surfaces are symmetrically provided on the inner side of the support slider, the V-shaped sliding surfaces fit the shape of the V-shaped grooves, and oil drain holes are provided on the V-shaped sliding surfaces.

[0009] As a further improvement to the above solution, the linear guide rail seat has a built-in groove inside, and a servo motor is installed in the middle of one side of the built-in groove.

[0010] As a further improvement to the above solution, a ball screw is fixedly connected to the transmission end of the servo motor, and the end of the ball screw away from the servo motor is connected to the built-in groove through a bearing.

[0011] As a further improvement to the above solution, the outer surface of the ball screw is connected to a screw nut by a thread, and limit plates are symmetrically connected to both sides of the screw nut.

[0012] As a further improvement to the above solution, a rectangular limiting groove is provided in the middle of the V-shaped groove, and the limiting plate slides in conjunction with the rectangular limiting groove.

[0013] As a further improvement to the above solution, the support slider is located outside the limiting plate, and an oil supply pipe is connected to one side of the support slider.

[0014] As a further improvement to the above solution, a robot mounting plate is provided on the upper surface of the support slider, and the robot mounting plate has evenly distributed mounting holes.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This linear guide robot's walking axis achieves efficient self-lubrication and low-friction operation through the precise fit of V-shaped grooves and V-shaped sliding surfaces and the oil storage cavity structure. The V-shaped grooves on both sides of the linear guide seat match the V-shaped sliding surface on the inner side of the support slider, forming a stable sliding guide structure. Compared with traditional planar guides, it has a larger contact area and more uniform force distribution, which can reduce single-point wear. At the same time, the oil storage cavity inside the support slider is replenished with lubricating oil through the oil supply pipe, and the oil evenly penetrates to the sliding contact surface through the oil drain hole on the V-shaped sliding surface to form a continuous oil film, which effectively reduces the coefficient of friction, extends the service life of the equipment, and reduces the frequency of maintenance. It is particularly suitable for industrial scenarios with high-frequency operation.

[0017] 2. The linear guide robot's walking axis, through the coordinated design of the servo motor-ball screw transmission system and the limiting structure, ensures high-precision linear motion. The servo motor in the built-in groove drives the ball screw to rotate, converting the rotational motion into the linear motion of the screw nut. The limiting plates on both sides of the screw nut slide and cooperate with the rectangular limiting groove in the middle of the V-shaped slide, which can accurately limit the movement trajectory of the nut, prevent deviation or shaking during operation, and ensure the positional accuracy of the robot mounting plate when moving, meeting the demanding positioning accuracy requirements of precision machining, assembly and other work. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2This is a three-dimensional structural diagram of the supporting slider of this utility model;

[0020] Figure 3 This is a three-dimensional structural diagram of the linear guide rail base of this utility model;

[0021] Figure 4 This is an enlarged structural diagram showing a partial detail of the V-shaped groove of this utility model.

[0022] In the diagram: 1. Linear guide rail seat; 2. Support slider; 3. V-shaped groove; 4. V-shaped sliding surface; 5. Oil drain hole; 6. Built-in groove; 7. Servo motor; 8. Ball screw; 9. Screw nut; 10. Limit plate; 11. Rectangular limit groove; 12. Oil supply pipe; 13. Robot mounting plate; 14. Mounting hole. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1 - Figure 4 This utility model provides a technical solution: a linear guide rail type robot walking axis, including a linear guide rail seat 1, a support slider 2 is provided above the linear guide rail seat 1, the inside of the support slider 2 is an oil storage cavity, V-shaped grooves 3 are symmetrically machined on both sides of the linear guide rail seat 1, V-shaped sliding surfaces 4 are symmetrically provided on the inner side of the support slider 2, the V-shaped sliding surfaces 4 are fitted with the V-shaped grooves 3, and oil drain holes 5 are provided on the V-shaped sliding surfaces 4.

[0025] When the support slider 2 moves on the linear guide seat 1, the lubricating oil in the oil storage cavity seeps out through the oil drain hole 5 on the V-shaped sliding surface 4 under pressure. Since the V-shaped sliding surface 4 and the V-shaped sliding groove 3 are shaped to fit each other, the seeping lubricating oil can form a continuous and uniform oil film on the contact surface of the two, effectively reducing the coefficient of friction and reducing wear. In addition, the V-shaped sliding surface 4 and the V-shaped sliding groove 3 adopt a 45° inclined surface design. Compared with a single-plane guide rail, this structure enables the support slider 2 to obtain reliable constraints in both directions, improves lateral stiffness, enhances the overall rigidity and anti-overturning ability of the traveling shaft, and enables it to meet the operation requirements of various complex industrial scenarios.

[0026] The linear guide rail base 1 has an internal groove 6. A servo motor 7 is installed in the middle of one side of the internal groove 6. A ball screw 8 is fixedly connected to the transmission end of the servo motor 7. The end of the ball screw 8 away from the servo motor 7 is connected to the internal groove 6 through a bearing. A screw nut 9 is threaded onto the outer surface of the ball screw 8. Limiting plates 10 are symmetrically connected to both sides of the screw nut 9. A rectangular limiting groove 11 is provided in the middle of the V-shaped slide groove 3. The limiting plate 10 and the rectangular limiting groove 11 slide together. The support slider 2 is located outside the limiting plate 10. An oil pipe 12 is connected to one side of the support slider 2. A robot mounting plate 13 is provided on the upper surface of the support slider 2. The robot mounting plate 13 has evenly distributed mounting holes 14.

[0027] During the use of the linear guide robot's walking axis, when the servo motor 7 is powered on, its output shaft transmits power to the ball screw 8, causing the ball screw 8 to start rotating. Since the ball screw 8 is securely mounted in the built-in groove 6 via bearings, the screw nut 9, driven by the threaded pair, converts the rotational motion into precise linear motion. The limiting plates 10 on both sides of the screw nut 9 tightly cooperate with the rectangular limiting groove 11 in the middle of the V-shaped slide 3, forming a stable limiting structure. This design effectively restricts the degree of freedom of the screw nut 9, allowing it to move only along the direction specified by the rectangular limiting groove 11. To ensure the straightness and stability of the motion trajectory and avoid deviation or shaking, the support slider 2 is firmly connected to the outer side of the limit plate 10 by bolts. Therefore, when the lead screw nut 9 moves, the support slider 2 will also move synchronously. The robot mounting plate 13 on the upper surface of the support slider 2 can be reliably connected to the external robotic arm or other equipment through the evenly distributed mounting holes 14, thereby accurately transmitting the linear motion to the load end and realizing the robot's movement in the horizontal or vertical direction. The oil storage chamber inside the support slider 2 is connected to the external oil supply system through the oil supply pipe 12, which can store a sufficient amount of lubricating oil.

[0028] Working Principle: During the use of the linear guide robot's walking axis, when the servo motor 7 is powered on, its output shaft transmits power to the ball screw 8, causing the ball screw 8 to start rotating. Since the ball screw 8 is securely installed in the built-in groove 6 through bearings, the screw nut 9, driven by the threaded pair, converts the rotational motion into precise linear motion. The limiting plates 10 on both sides of the screw nut 9 are tightly fitted with the rectangular limiting groove 11 in the middle of the V-shaped slide 3, forming a stable limiting structure. This design effectively restricts the degree of freedom of the screw nut 9, allowing it to move only along the direction specified by the rectangular limiting groove 11, thereby ensuring the straightness and stability of the motion trajectory and avoiding deviation or wobbling. The support slider 2 is firmly connected to the outer side of the limiting plate 10 by bolts. Therefore, when the screw nut 9 moves, the support slider 2 will also move synchronously. The robot mounting plate 13 on the upper surface of the support slider 2 is connected by evenly distributed mounting holes 1. 4. It can reliably connect with external robotic arms or other equipment, thereby accurately transmitting linear motion to the load end, enabling the robot to move in the horizontal or vertical direction. In terms of lubrication, the oil storage chamber inside the support slider 2 is connected to the external oil supply system through the oil supply pipe 12, which can store a sufficient amount of lubricating oil. When the support slider 2 moves on the linear guide seat 1, the lubricating oil in the oil storage chamber seeps out through the oil drain hole 5 on the V-shaped sliding surface 4 under pressure. Since the V-shaped sliding surface 4 and the V-shaped sliding groove 3 are shaped to fit each other, the seeping lubricating oil can form a continuous and uniform oil film on the contact surface of the two, effectively reducing the coefficient of friction and reducing wear. In addition, the V-shaped sliding surface 4 and the V-shaped sliding groove 3 adopt a 45° inclined surface design. Compared with the single-plane guide rail, this structure enables the support slider 2 to obtain reliable constraints in both directions, improves lateral stiffness, enhances the overall rigidity and anti-overturning ability of the walking axis, and enables it to meet the operation requirements of various complex industrial scenarios.

[0029] Finally, it should be noted that the above content is only used to illustrate the technical solution of this utility model, and is not intended to limit the scope of protection of this utility model. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model do not depart from the essence and scope of the technical solution of this utility model.

Claims

1. A linear guide type robot walking axis, comprising a linear guide base (1), characterized in that: A support slider (2) is provided above the linear guide seat (1). The inside of the support slider (2) is an oil storage cavity. V-shaped grooves (3) are symmetrically machined on both sides of the linear guide seat (1). V-shaped sliding surfaces (4) are symmetrically arranged on the inner side of the support slider (2). The V-shaped sliding surfaces (4) fit the shape of the V-shaped grooves (3). Oil drain holes (5) are provided on the V-shaped sliding surfaces (4).

2. The linear guide robot walking axis according to claim 1, characterized in that: The linear guide seat (1) has an internal groove (6), and a servo motor (7) is installed in the middle of one side of the internal groove (6).

3. The linear guide robot walking axis according to claim 2, characterized in that: The transmission end of the servo motor (7) is fixedly connected to a ball screw (8), and the end of the ball screw (8) away from the servo motor (7) is connected to the built-in groove (6) through a bearing.

4. The linear guide robot walking axis according to claim 3, characterized in that: The outer surface of the ball screw (8) is connected to a screw nut (9) by a thread, and limit plates (10) are symmetrically connected to both sides of the screw nut (9).

5. The linear guide robot walking axis according to claim 4, characterized in that: A rectangular limiting groove (11) is provided in the middle of the V-shaped groove (3), and the limiting plate (10) slides in conjunction with the rectangular limiting groove (11).

6. The linear guide robot walking axis according to claim 1, characterized in that: The support slider (2) is located outside the limiting plate (10), and an oil pipe (12) is connected to one side of the support slider (2).

7. The linear guide robot walking axis according to claim 1, characterized in that: The upper surface of the support slider (2) is provided with a robot mounting plate (13), and the robot mounting plate (13) has evenly distributed mounting holes (14).

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