Connecting shaft structure for five-axis linkage numerical control machining center

Abstract

The utility model discloses a connecting shaft structure for a five-axis linkage numerical control machining center, and relates to the technical field of connecting shaft structures. A fixing sleeve is movably connected to the interior of the sliding sleeve, a second fixing sleeve is clamped to the interior of one end of the fixing sleeve, a first connecting shaft is clamped to the interior of the second fixing sleeve, and a second connecting shaft is clamped to the interior of the other end of the fixing sleeve; a steel ball is extruded into a sliding groove formed in one end of a sliding sleeve, a telescopic spring compressed towards one end by the sliding sleeve returns to the original position to drive the bottom of the sliding sleeve to downwards extrude and clamp the steel ball into a limiting groove, and a second telescopic spring arranged on the surface of a second connecting shaft is clamped into a clamping groove after being extruded; and the first connecting shaft and the second connecting shaft are fixed in the fixing sleeve and the second fixing sleeve through the fixing bolt and the second fixing bolt, the situation that a wrench needs to be used for tightening when bolts and screws are used for installation is avoided, and installation is rapid and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of coupling structures, in particular to a coupling structure for a five-axis linkage CNC machining center. Background Technique

[0002] After retrieval, a coupling structure for a five-axis linkage CNC machining center is proposed in the patent document with the publication number CN 213764024 U, which includes a connection housing. A limiting boss is arranged at the middle position inside the connection housing. A plurality of clamping mechanisms are installed on the connection housing on both the left and right sides of the limiting boss. Three guiding and installing mechanisms are respectively installed on the left and right sides inside the connection housing. The guiding and installing mechanism includes: a support rod, an arc-shaped support plate and guiding balls. The arc-shaped support plate is connected to the inner wall of the connection housing through the support rod. The guiding balls are made of friction materials. A plurality of guiding balls are installed inside the arc-shaped support plate. An end fixing mechanism is respectively installed at both ends of the connection housing. The structure of the utility model is simple, and the installation and disassembly are convenient;

[0003] However, there are certain defects. Most of this coupling structure is fixed by bolts and nuts. When using bolts and nuts for fixing, a wrench or the like is required to tighten the nuts during both installation and disassembly. There will be vibrations during machine operation, resulting in loosening between the bolts and nuts, affecting the normal operation of the machine. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a coupling structure for a five-axis linkage CNC machining center, which solves the problem that most of the coupling structure is fixed by bolts and nuts. When using bolts and nuts for fixing, a wrench or the like is required to tighten the nuts during both installation and disassembly. There will be vibrations during machine operation, resulting in loosening between the bolts and nuts, affecting the normal operation of the machine.

[0005] To achieve the above purposes, the utility model is realized through the following technical solutions: A coupling structure for a five-axis linkage CNC machining center. It includes a sliding sleeve. A chute is opened at one end of the sliding sleeve. A fixing sleeve is movably connected inside the sliding sleeve. A limiting hole is opened at one end of the fixing sleeve. A limiting block protrudes from the middle of the fixing sleeve. A steel ball is clamped inside the limiting hole. A second fixing sleeve is clamped inside one end of the fixing sleeve. A limiting groove is recessed at one end of the second fixing sleeve. A first connecting shaft is clamped inside the second fixing sleeve. A second connecting shaft is clamped inside the other end of the fixing sleeve. A second telescopic spring is fixedly connected to the surface of the second connecting shaft. A clamping block is fixedly connected to the top of the second telescopic spring.

[0006] Preferably, a telescopic spring is sleeved outside the fixing sleeve, and the telescopic spring is clamped inside the sliding sleeve.

[0007] Preferably, the limiting block is clamped in a groove formed inside the sliding sleeve.

[0008] Preferably, the middle part of the limiting hole expands towards both ends, and the diameter of the steel ball is larger than the aperture diameters at both ends of the limiting hole.

[0009] Preferably, a second clamping groove is formed at one end of the second fixing sleeve, and a clamping groove is formed at one end of the fixing sleeve.

[0010] Preferably, second telescopic springs are fixedly connected to the surfaces of the first connecting shaft and the second connecting shaft, and the first connecting shaft and the second connecting shaft are clamped inside the second clamping groove and the clamping groove through clamping blocks.

[0011] Preferably, fixing holes are formed on the surface of the first connecting shaft, second fixing holes are formed on the surface of the second connecting shaft, fixing bolts are arranged inside the fixing holes, second fixing bolts are arranged inside the second fixing holes, the second fixing sleeve and the first connecting shaft are fixedly connected through the fixing bolts, and the fixing sleeve and the second connecting shaft are fixedly connected through the second fixing bolts.

[0012] The utility model provides a shaft connecting structure for a five-axis linkage numerical control machining center. Compared with the prior art, the following beneficial effects are achieved:

[0013] 1. For a shaft connecting structure for a five-axis linkage numerical control machining center, by respectively clamping the first connecting shaft and the second connecting shaft into the second fixing sleeve and the fixing sleeve, since the sliding sleeve is slidably connected to the outside of the fixing sleeve, when the sliding sleeve slides to the right end, one end of the second fixing sleeve squeezes the steel ball, and the steel ball is squeezed into a chute formed at one end of the sliding sleeve. When the limiting groove formed at one end of the second fixing sleeve slides to the lower part of the limiting hole, the telescopic spring compressed by the sliding sleeve at one end restores to its original position, driving the bottom of the sliding sleeve to squeeze the steel ball downward and clamp it inside the limiting groove. The second telescopic spring arranged on the surface of the second connecting shaft is clamped inside the clamping groove after being squeezed. The first connecting shaft and the second connecting shaft are fixed inside the fixing sleeve and the second fixing sleeve through the fixing bolts and the second fixing bolts, avoiding the need to use a wrench to tighten when installing bolts and screws, and the installation is fast and convenient.

[0014] 2. For a shaft connecting structure for a five-axis linkage numerical control machining center, through the fixing bolts and the second fixing bolts, the first connecting shaft and the second connecting shaft are fixed inside the fixing sleeve and the second fixing sleeve. Since the steel ball arranged inside the clamping groove formed at one end of the fixing sleeve can be clamped inside the limiting groove under the squeezing action of the top sliding sleeve for fixation, it is avoided that the screws become loose due to vibration during the operation of the machine. Without external force applied, the sliding sleeve will not move, and the steel ball can always be clamped inside the limiting groove for connection. Description of the Drawings

[0015] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0016] Figure 2 is a schematic diagram of the sectional structure of the present utility model;

[0017] Figure 3 is an exploded view of the overall structure of the present utility model;

[0018] Figure 4 is a schematic diagram of the partial structure of the present utility model.

[0019] In the figure: 1. sliding sleeve; 110. chute; 2. telescopic spring; 3. fixed sleeve; 300. limiting block; 301. clamping groove; 302. limiting hole; 4. second fixed sleeve; 400. second clamping groove; 401. limiting groove; 5. fixing bolt; 6. steel ball; 7. first connecting shaft; 700. fixing hole; 8. second connecting shaft; 800. second fixing hole; 9. second telescopic spring; 10. clamping block; 11. second fixing bolt. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figures 1-4, the present utility model provides a technical solution: a coupling structure for a five-axis linkage CNC machining center. It includes a sliding sleeve 1. One end of the sliding sleeve 1 is provided with a sliding groove 110, which is used for when the second fixing sleeve 4 is clamped into the inside of the fixing sleeve 3, the steel ball 6 is clamped inside, so that when one end of the second fixing sleeve 4 enters, the steel ball 6 is squeezed into the limiting groove 401. The inside of the sliding sleeve 1 is movably connected with a fixing sleeve 3, and the fixing sleeve 3 is used to connect the first connecting shaft 7 and the second connecting shaft 8. One end of the fixing sleeve 3 is provided with a limiting hole 302, and a limiting block 300 protrudes from the middle of the fixing sleeve 3. The limiting block 300 is used to fix the sliding sleeve 1 outside the fixing sleeve 3 to prevent the sliding sleeve 1 from slipping off the outside of the fixing sleeve 3. A steel ball 6 is clamped inside the limiting hole 302. One end inside of the fixing sleeve 3 is clamped with a second fixing sleeve 4. One end of the second fixing sleeve 4 is recessed with a limiting groove 401. The first connecting shaft 7 is clamped inside the second fixing sleeve 4. When the sliding sleeve 1 slides to the right, the steel ball 6 enters the sliding groove 110 due to the extrusion of one end of the second fixing sleeve 4 inside. Subsequently, as the telescopic spring 2 returns to its original state, the steel ball 6 is squeezed back into the limiting hole 302 again and is clamped inside the fixing sleeve 3 under the extrusion of the inner wall of the top sliding sleeve 1. The other end inside of the fixing sleeve 3 is clamped with a second connecting shaft 8. The surface of the second connecting shaft 8 is fixedly connected with a second telescopic spring 9. The top of the second telescopic spring 9 is fixedly connected with a clamping block 10. The second telescopic spring 9 can contract when the first connecting shaft 7 and the second connecting shaft 8 enter the inside of the fixing sleeve 3 and the second fixing sleeve 4, and when sliding to the second clamping groove 400 and the clamping groove 301, the clamping block 10 is fixed inside the fixing sleeve 3 and the second fixing sleeve 4 under the elastic action of the second telescopic spring 9.

[0022] Please refer to Figures 1-4 , an expansion spring 2 is sleeved outside the fixing sleeve 3, and the expansion spring 2 is clamped inside the sliding sleeve 1. The limiting block 300 is clamped in the groove opened inside the sliding sleeve 1. The middle of the limiting hole 302 expands towards both ends, enabling the steel ball 6 to move inside while not falling outside. The diameter of the steel ball 6 is larger than the aperture at both ends of the limiting hole 302. One end of the second fixing sleeve 4 is provided with a second clamping groove 400, and one end of the fixing sleeve 3 is provided with a clamping groove 301. The surfaces of the first connecting shaft 7 and the second connecting shaft 8 are both fixedly connected with a second telescopic spring 9. The first connecting shaft 7 and the second connecting shaft 8 are clamped inside the second clamping groove 400 and the clamping groove 301 through the clamping block 10. A fixing hole 700 is opened on the surface of the first connecting shaft 7, and a second fixing hole 800 is opened on the surface of the second connecting shaft 8. A fixing bolt 5 is arranged inside the fixing hole 700, and a second fixing bolt 11 is arranged inside the second fixing hole 800. The second fixing sleeve 4 and the first connecting shaft 7 are fixedly connected through the fixing bolt 5, and the fixing sleeve 3 and the second connecting shaft 8 are fixedly connected through the second fixing bolt 11.

[0023] During use, when it is necessary to connect the first connecting shaft 7 and the second connecting shaft 8, first snap the first connecting shaft 7 and the second connecting shaft 8 into the interiors of the second fixing sleeve 4 and the fixing sleeve 3 respectively. Since the sliding sleeve 1 is slidably connected to the outside of the fixing sleeve 3, when the sliding sleeve 1 slides to the right end, one end of the second fixing sleeve 4 squeezes the steel ball 6, and squeezes the steel ball 6 into the interior of the chute 110 opened at one end of the sliding sleeve 1. When the limiting groove 401 opened at one end of the second fixing sleeve 4 slides below the limiting hole 302, the telescopic spring 2 compressed by the sliding sleeve 1 at one end returns to its original position, driving the bottom of the sliding sleeve 1 to squeeze the steel ball 6 downward and snap it into the interior of the limiting groove 401. The second telescopic spring 9 provided on the surface of the second connecting shaft 8 is snapped into the interior of the card slot 301 after being squeezed. The first connecting shaft 7 and the second connecting shaft 8 are fixed in the interiors of the fixing sleeve 3 and the second fixing sleeve 4 through the fixing bolt 5 and the second fixing bolt 11. Since the steel ball 6 provided in the interior of the card slot 301 opened at one end of the fixing sleeve 3 can be snapped into the interior of the limiting groove 401 under the squeezing action of the sliding sleeve 1 at the top for fixation, it is avoided that the screws become loose due to vibration during the operation of the machine. Without external force applied, the sliding sleeve 1 will not move, and the steel ball 6 can always be snapped into the interior of the limiting groove 401 for connection.

[0024] In this embodiment, a shaft connecting structure for a five-axis linkage numerical control machining center, among the above components, its own structural features and working principles all adopt the prior art and will not be elaborated here.

[0025] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or sequence between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0026] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A coupling structure for a five-axis linkage CNC machining center, including a sliding sleeve (1), characterized in that: One end of the sliding sleeve (1) is provided with a sliding groove (110). A fixed sleeve (3) is movably connected inside the sliding sleeve (1). One end of the fixed sleeve (3) is provided with a limiting hole (302). A limiting block (300) protrudes from the middle of the fixed sleeve (3). A steel ball (6) is clamped inside the limiting hole (302). A second fixed sleeve (4) is clamped inside one end of the fixed sleeve (3). One end of the second fixed sleeve (4) is recessed with a limiting groove (401). A first connecting shaft (7) is clamped inside the second fixed sleeve (4). A second connecting shaft (8) is clamped inside the other end of the fixed sleeve (3). A second telescopic spring (9) is fixedly connected to the surface of the second connecting shaft (8). A clamping block (10) is fixedly connected to the top of the second telescopic spring (9).

2. The coupling structure for a five-axis linkage CNC machining center according to claim 1, characterized in that: A telescopic spring (2) is sleeved outside the fixed sleeve (3), and the telescopic spring (2) is clamped inside the sliding sleeve (1).

3. The coupling structure for a five-axis linkage CNC machining center according to claim 1, wherein: The limiting block (300) is clamped in a groove opened inside the sliding sleeve (1).

4. A coupling structure for a five-axis linkage CNC machining center according to claim 1, characterized in that: The middle of the limiting hole (302) expands towards both ends, and the diameter of the steel ball (6) is larger than the hole diameters at both ends of the limiting hole (302).

5. The coupling structure for a five-axis linkage CNC machining center according to claim 1, wherein: One end of the second fixed sleeve (4) is provided with a second clamping groove (400), and one end of the fixed sleeve (3) is provided with a clamping groove (301).

6. The coupling structure for a five-axis linkage CNC machining center according to claim 1, wherein: Second telescopic springs (9) are fixedly connected to the surfaces of the first connecting shaft (7) and the second connecting shaft (8), and the first connecting shaft (7) and the second connecting shaft (8) are clamped inside the second clamping groove (400) and the clamping groove (301) through the clamping block (10).

7. The coupling structure for a five-axis linkage CNC machining center according to claim 6, characterized in that: A fixing hole (700) is opened on the surface of the first connecting shaft (7), and a second fixing hole (800) is opened on the surface of the second connecting shaft (8). A fixing bolt (5) is arranged inside the fixing hole (700), and a second fixing bolt (11) is arranged inside the second fixing hole (800). The second fixed sleeve (4) and the first connecting shaft (7) are fixedly connected through the fixing bolt (5), and the fixed sleeve (3) and the second connecting shaft (8) are fixedly connected through the second fixing bolt (11).

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