High-precision electric servo riveting machine structure

Abstract

This invention discloses a high-precision electric servo riveting machine structure in the field of riveting machines, including a riveting pressing motor. A guide housing is provided at the bottom of the riveting pressing motor's outer shell. A pressing screw is integrally formed at one end of the pressing motor's main shaft. A limiting shoulder is provided at the connection between the pressing screw and the end of the pressing motor's main shaft. A pressing rotary motor is slidably disposed inside the guide housing. This invention can drive the pressing screw to rotate through the pressing motor's main shaft, and then, through the threaded transmission between the pressing screw and the top support, drive the pressing rotary motor to move up and down under the sliding engagement of the guide slider and the guide groove. By making the pressing screw and the pressing motor's main shaft an integral structure, replacing the existing structure using a coupling, the transmission accuracy can be greatly improved, while saving material costs. It offers high precision, a compact and small structure, saves space, and has a fast response speed.

Description

Technical Field

[0001] This invention relates to the field of riveting machines, specifically a high-precision electric servo riveting machine structure. Background Technology

[0002] Riveting machines typically require two motors during the riveting and pressing process: one to drive the lead screw to provide the pressing force, and the other to drive the rivet head to provide the rotational force. However, existing riveting motors and lead screws are mostly connected using couplings, resulting in a bulky and non-compact overall structure with poor transmission accuracy, making it difficult to control riveting precision. Furthermore, during rivet head rotation control, dry grinding occurs in the ball joint, leading to significant eccentric rotation resistance and wear, thus reducing service life. Therefore, those skilled in the art have proposed a high-precision electric servo riveting machine structure to address the problems mentioned in the background section. Summary of the Invention

[0003] The purpose of this invention is to provide a high-precision electric servo riveting machine structure to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A high-precision electric servo riveting machine structure includes a riveting pressing motor, a guide housing at the bottom of the riveting pressing motor housing, a pressing screw integrally formed at one end of the pressing motor spindle, a limiting shoulder at the connection between the pressing screw and the end of the pressing motor spindle, a pressing rotary motor slidably disposed inside the guide housing, a top support member connected to the pressing motor spindle by a thread at the top of the pressing rotary motor, guide grooves on both the left and right sides of the inner wall of the guide housing, and two guide sliders that slide in cooperation with the guide grooves fixedly connected to the outer wall of the pressing rotary motor.

[0006] As a further aspect of the present invention: a riveting pressing shaft is provided at the bottom end of the rotary motor spindle of the pressing rotary motor, and the riveting pressing shaft is connected and installed to the rotary motor spindle through a rigid coupling.

[0007] As a further embodiment of the present invention: a protective sleeve is provided inside the guide housing around the riveting and pressing shaft, a bottom locking ring is installed between the bottom periphery of the protective sleeve and the guide housing, the bottom locking ring is connected to the guide housing by screws, and the protective sleeve is rotatably connected to the riveting and pressing shaft by a double-row roller bearing.

[0008] As a further embodiment of the present invention: an eccentric riveted outer shell is fixedly installed at the bottom end of the protective sleeve, a spherical cavity is opened at the eccentric position at the bottom end of the riveting pressing shaft, a support connecting rod is movably arranged inside the spherical cavity, and a hole is opened at the bottom end of the riveting pressing shaft around the support connecting rod to avoid the eccentric rotation of the support connecting rod.

[0009] As a further embodiment of the present invention: the bottom end of the support link is interference-fitted with a clamp, and the bottom end of the clamp holds a rivet joint.

[0010] As a further aspect of the present invention: the support link has a stepped structure, and an elastic rubber ring for supporting the support link is glued to the outer periphery of the bottom end of the eccentrically riveted outer shell.

[0011] As a further aspect of the present invention: the elastic rubber ring is made of wear-resistant material, and the top support is a convex-shaped structure.

[0012] As a further aspect of the present invention: an oil reservoir is provided on the inner wall of the spherical cavity at the bottom end of the riveting and pressing shaft, and a bottom sealing ring is provided at the bottom end of the oil reservoir for sealing. The bottom sealing ring is connected to the riveting and pressing shaft through a slot, and the oil reservoir has a spherical ring structure.

[0013] As a further aspect of the present invention, the bottom sealing ring is made of rubber.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. This invention can drive the pressing screw to rotate through the pressing motor spindle, and then drive the pressing rotary motor to move up and down under the sliding cooperation of the guide slider and the guide groove through the threaded transmission between the pressing screw and the top support. The pressing screw and the pressing motor spindle are made into an integrated structure to replace the existing structure that uses a coupling connection, which can greatly improve the transmission accuracy, save material costs, and has high precision. The structure is small and compact, saves space and has a fast response speed.

[0016] 2. This invention can store lubricating oil inside the oil reservoir and seal it with a bottom sealing ring, thereby ensuring that the lubricating oil can provide lubrication when the ball head rotates. This allows the rivet joint to rotate smoothly and flexibly, greatly improving the flexibility of rotation, reducing wear, and increasing durability. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2 This is a top view of the structure of the present invention;

[0019] Figure 3 This is an internal sectional view of the present invention;

[0020] Figure 4 This is a cross-sectional view of the eccentrically riveted outer shell portion in this invention;

[0021] Figure 5 This is a magnified view of a portion of the ball head in this invention.

[0022] In the diagram: 1. Riveting and pressing motor; 2. Guide housing; 201. Guide groove; 3. Bottom locking ring; 4. Eccentric riveting housing; 5. Pressing motor spindle; 6. Limiting shoulder; 7. Pressing screw; 8. Pressing rotary motor; 801. Guide slider; 9. Top support; 10. Rotary motor spindle; 11. Rigid coupling; 12. Riveting and pressing shaft; 1201. Spherical cavity; 1202. Oil reservoir; 1203. Bottom sealing ring; 13. Ball head; 14. Support rod; 15. Clamp; 16. Riveting joint; 17. Pressure cap; 18. Elastic rubber ring; 19. Protective sleeve. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Please see Figures 1-5 In this embodiment of the invention, a high-precision electric servo riveting machine structure includes a riveting pressing motor 1. A guide housing 2 is provided at the bottom of the housing of the riveting pressing motor 1. A pressing screw 7 is integrally formed at one end of the pressing motor main shaft 5 of the riveting pressing motor 1. A limiting shoulder 6 is provided at the connection between the pressing screw 7 and the end of the pressing motor main shaft 5. A pressing rotary motor 8 is slidably arranged inside the guide housing 2. A top support 9 is provided at the top of the pressing rotary motor 8 and is threadedly connected to the pressing motor main shaft 5. Guide grooves 201 are provided on both the left and right sides of the inner wall of the guide housing 2. Two guide sliders 801 that slide in cooperation with the guide grooves 201 are fixedly connected to the outer wall of the pressing rotary motor 8.

[0025] By adopting the above technical solution, the riveting pressing motor 1 can rotate the pressing screw 7 through the pressing motor spindle 5. Then, under the threaded transmission between the pressing screw 7 and the top support 9, the pressing rotary motor 8 can move up and down under the sliding cooperation between the guide slider 801 and the guide groove 201. Making the pressing screw 7 and the pressing motor spindle 5 into an integrated structure to replace the existing structure that uses a coupling connection can greatly improve the transmission accuracy, while saving material costs. It has high precision, a small and compact structure, saves space, and has a fast response speed.

[0026] Among them, the bottom end of the rotary motor spindle 10 of the pressing rotary motor 8 is provided with a riveting pressing shaft 12. The riveting pressing shaft 12 is connected and installed to the rotary motor spindle 10 through a rigid coupling 11, which can realize rigid transmission of power and ensure the accuracy of transmission.

[0027] Inside the guide housing 2, a protective sleeve 19 is provided around the riveting pressing shaft 12. A bottom locking ring 3 is installed between the bottom periphery of the protective sleeve 19 and the guide housing 2. The bottom locking ring 3 is connected to the guide housing 2 by screws. The bottom locking ring 3 can fix the protective sleeve 19. The protective sleeve 19 and the riveting pressing shaft 12 are rotatably connected by a double-row roller bearing, which can ensure the stability of the rotation of the riveting pressing shaft 12.

[0028] Among them, the protective sleeve 19 is fixedly installed with an eccentric riveting shell 4 at the bottom end, and a spherical cavity 1201 is opened at the eccentric position at the bottom end of the riveting pressing shaft 12. A support connecting rod 14 is movably arranged inside the spherical cavity 1201. The bottom end of the riveting pressing shaft 12 is provided with a hole to avoid the eccentric rotation of the support connecting rod 14 around the support connecting rod 14. A chuck 15 is interference-connected to the bottom end of the support connecting rod 14, and the bottom end of the chuck 15 holds the riveting joint 16.

[0029] In the above technical solution, the eccentrically set riveting pressing shaft 12 can rotate, driving the ball head 13 to rotate, which in turn can drive the riveting head 16 to perform eccentric rotation under the support of the elastic rubber ring 18. This ensures that the rivet periphery is uniformly pressed when riveting and pressing the parts, which can greatly improve the pressing effect.

[0030] In this embodiment, the support rod 14 has a stepped structure, and an elastic rubber ring 18 for supporting the support rod 14 is glued to the outer periphery of the bottom end of the eccentric riveted outer shell 4. The elastic rubber ring 18 is made of wear-resistant material, and the top support member 9 has a convex structure.

[0031] Among them, an oil storage groove 1202 is provided on the inner wall of the spherical cavity 1201 at the bottom end of the riveting and pressing shaft 12. A bottom sealing ring 1203 for sealing is provided at the bottom end of the oil storage groove 1202. The bottom sealing ring 1203 is connected to the riveting and pressing shaft 12 through a slot. The oil storage groove 1202 is a spherical ring structure, and the bottom sealing ring 1203 is made of rubber material.

[0032] In the above technical solution, lubricating oil can be stored inside the oil reservoir 1202 and sealed by the bottom sealing ring 1203, thereby ensuring that the lubricating oil can play a lubricating role when the ball head 13 rotates, thus enabling the rivet joint 16 to rotate smoothly and flexibly, greatly improving the flexibility of rotation, reducing wear, and improving durability.

[0033] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A high-precision electric servo riveting machine structure, comprising a riveting pressing motor (1), characterized in that: The bottom of the riveting and pressing motor (1) is provided with a guide shell (2). One end of the pressing motor main shaft (5) of the riveting and pressing motor (1) is integrally formed with a pressing screw (7). The connection between the pressing screw (7) and the end of the pressing motor main shaft (5) is provided with a limiting shoulder (6). A pressing rotary motor (8) is slidably arranged inside the guide shell (2). The top of the pressing rotary motor (8) is provided with a top support (9) that is threadedly connected to the pressing motor main shaft (5). Guide grooves (201) are provided on both the left and right sides of the inner wall of the guide shell (2). Two guide sliders (801) that slide in cooperation with the guide grooves (201) are fixedly connected to the outer wall of the pressing rotary motor (8).

2. The structure of a high-precision electric servo riveting machine according to claim 1, characterized in that: The rotary motor (8) has a riveted pressing shaft (12) at the bottom of the rotary motor main shaft (10), and the riveted pressing shaft (12) is connected to the rotary motor main shaft (10) by a rigid coupling (11).

3. The structure of a high-precision electric servo riveting machine according to claim 2, characterized in that: The guide housing (2) is provided with a protective sleeve (19) located outside the riveting pressing shaft (12). A bottom locking ring (3) is installed between the bottom periphery of the protective sleeve (19) and the guide housing (2). The bottom locking ring (3) is connected to the guide housing (2) by screws.

4. The structure of a high-precision electric servo riveting machine according to claim 3, characterized in that: The protective sleeve (19) is fixedly installed with an eccentric riveting shell (4) at the bottom end. A spherical cavity (1201) is opened at the eccentric position at the bottom end of the riveting pressing shaft (12). A support connecting rod (14) is movably arranged inside the spherical cavity (1201). The top of the support connecting rod (14) has a ball head (13). The ball head (13) is placed in the spherical cavity (1201). The bottom end of the riveting pressing shaft (12) is located outside the support connecting rod (14) and has a hole to avoid the eccentric rotation of the support connecting rod (14). The protective sleeve (19) and the riveting pressing shaft (12) are rotatably connected by a double-row roller bearing.

5. The structure of a high-precision electric servo riveting machine according to claim 4, characterized in that: The bottom end of the support link (14) is interference-connected with a clamp (15), and the bottom end of the clamp (15) holds a rivet joint (16).

6. The structure of a high-precision electric servo riveting machine according to claim 5, characterized in that: The support rod (14) has a stepped structure, and an elastic rubber ring (18) for supporting the support rod (14) is glued to the outer periphery of the bottom end of the eccentric riveted outer shell (4).

7. The structure of a high-precision electric servo riveting machine according to claim 6, characterized in that: The elastic rubber ring (18) is made of wear-resistant material, and the top support (9) has a convex structure.

8. The structure of a high-precision electric servo riveting machine according to claim 4, characterized in that: An oil reservoir (1202) is provided on the inner wall of the spherical cavity (1201) at the bottom end of the riveting and pressing shaft (12). A bottom sealing ring (1203) for sealing is provided at the bottom end of the oil reservoir (1202). The bottom sealing ring (1203) is connected to the riveting and pressing shaft (12) through a slot. The oil reservoir (1202) is a spherical ring structure.

Images