High-strength numerical control machine tool spindle pull rod

Abstract

The utility model discloses a high-strength numerical control machine tool spindle pull rod, which belongs to the technical field of spindle pull rods, and comprises a pull rod body, the bottom of the pull rod body is fixedly connected with a limiting mechanism, the bottom of the limiting mechanism is clamped with a clamping mechanism, and the bottom of the clamping mechanism is fixedly connected with an oil cylinder body. The pull rod body serves as a core component of the whole spindle pull rod, mainly plays a role in transmitting pull force and clamping a cutter and can support and limit the limiting mechanism, the oil cylinder body provides a power source for the pull rod, and the pull rod is driven to clamp and loosen the cutter through the pressure effect of hydraulic oil. The fixing ring is fixedly connected to the bottom of the pull rod body, a stable installation foundation is provided for the connecting ring and other components, the connecting ring plays a role in connecting the fixing ring and the clamping mechanism, and effective connection between the pull rod body and the oil cylinder body can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of spindle pull rods, in particular to a high-strength spindle pull rod for CNC machine tools. Background Art

[0002] The spindle tool pulling structure on the CNC machine tool is that the pull rod drives the clamping claw to move upward under the action of the butterfly spring elastic force, and a tool pull pin is clamped at one end of the clamping claw, thereby realizing the spindle tool pulling. When the spindle tool is changed, the pull rod compresses the butterfly spring under the action of external force, driving the clamping claw to move downward, so that the clamping claw releases the tool pull pin and completes the spindle tool change.

[0003] In the prior art, the nut on the pull rod will become loose due to the frequent up and down movement of the pull rod and the elastic force of the disc spring, thereby changing the distance between the claw and the nut, causing the compression amount of the disc spring to change, affecting the pulling force of the pull nail;

[0004] The existing patent (publication number: CN219453387U) is a spindle pull rod structure, including a pull rod, a claw and a disc spring, one end of the claw is clamped with the lower end of the pull rod, and the other end of the claw clamps the tool pull pin. The disc spring is mounted on the pull rod, and a nut is threadedly connected to the upper end of the pull rod. A groove is provided on the pull rod on the outside of the nut, and a retaining ring is provided in the groove. Through the action of the retaining ring, the nut is supported to ensure that the distance between the claw and the nut remains unchanged, that is, the compression amount of the disc spring is stable and unchanged, so that the pulling force of the pull pin remains unchanged.

[0005] In view of the above problems, the existing patent provides a solution, but it lacks a structure for quickly connecting the tie rod and the cylinder body, resulting in that the connection and disassembly of the tie rod and the cylinder body are rather cumbersome during actual use, thereby reducing the efficiency of the user in replacing the tie rod and the cylinder body.

[0006] Therefore, a high-strength CNC machine tool spindle tie rod is proposed. Utility Model Content

[0007] The purpose of the utility model is to provide a high-strength CNC machine tool spindle pull rod, which can solve the problem that the existing spindle pull rod lacks a structure for quick connection between the pull rod and the cylinder body, resulting in cumbersome connection and disassembly of the pull rod and the cylinder body during actual use, thereby reducing the user's efficiency in replacing the pull rod and the cylinder body.

[0008] To achieve the above object, the utility model provides the following technical solution: a high-strength CNC machine tool spindle tie rod, comprising a tie rod body, the bottom of the tie rod body is fixedly connected to a limiting mechanism, the bottom of the limiting mechanism is clamped with a clamping mechanism, and the bottom of the clamping mechanism is fixedly connected to a cylinder body;

[0009] The limiting mechanism includes a fixed ring, a connecting ring, a fixed block, an oil inlet hole and a threaded hole. The fixed ring is fixedly connected to the bottom of the pull rod body. The connecting ring is fixedly connected to the bottom of the fixed ring. The fixed block is fixedly connected to the inner side of the connecting ring. The oil inlet holes are respectively opened on the inner sides of the fixed ring and the connecting ring. The threaded hole is opened on the inner side of the fixed ring.

[0010] Preferably, the clamping mechanism includes a clamping ring, a fixed shell, a block inlet hole, an oil delivery hole, a connecting plate and a limiting hole. The clamping ring is fixedly connected to the top of the oil cylinder body.

[0011] Preferably, the fixed shell is fixedly connected to the inner side of the clamping ring. The block inlet hole is opened on the right side of the fixed shell. The oil delivery hole is opened on the inner side of the clamping ring.

[0012] Preferably, the connecting plate is welded to the surface of the clamping ring. The limiting hole is opened on the inner side of the top of the connecting plate.

[0013] Preferably, a protective pad is bolted to the inner side of the fixed shell. Anti-slip grooves are engraved on the surface of the protective pad.

[0014] Preferably, a bolt is movably connected to the inner side of the limiting hole. The bolt passes through the limiting hole and is threadedly connected to the inner side of the threaded hole.

[0015] Preferably, a rubber pad is sleeved on the surface of the connecting plate. Anti-slip grooves are engraved on the surface of the rubber pad.

[0016] Preferably, a protective pad is bolted to the inner wall of the clamping ring. Anti-slip grooves are engraved on the surface of the protective pad.

[0017] Preferably, a sealing ring is bolted to the bottom of the pull rod body. One side of the sealing ring away from the pull rod body is bolted to the inner side of the clamping ring.

[0018] Preferably, an airtight pad is bolted to the bottom of the fixed ring. The bottom of the airtight pad contacts the top of the clamping ring.

[0019] Compared with the prior art, the beneficial effects of the present utility model are:

[0020] 1. The pull rod body of the present application is the core component of the entire spindle pull rod. It mainly functions to transmit tensile force and clamp the tool, and can support and limit the limiting mechanism. The oil cylinder body provides a power source for the pull rod. Through the pressure action of hydraulic oil, it drives the pull rod to clamp and release the tool. The fixing ring is fixedly connected to the bottom of the pull rod body, providing a stable installation foundation for the connecting ring and other components. The connecting ring plays a role in connecting the fixing ring and the clamping mechanism, enabling an effective connection between the pull rod body and the oil cylinder body. Its reasonable design and structure can ensure the stability and tightness of the connection, prevent hydraulic oil leakage, and ensure the normal operation of the pull rod. The fixing block is located inside the connecting ring. On the one hand, it significantly enhances the structural strength of the connecting ring and improves its anti-deformation ability. On the other hand, when cooperating with the clamping mechanism, it can accurately play a positioning and fixing role, ensuring the accuracy and stability of the clamping. When fixation is required, the fixing block can enter the inside of the fixing shell through the inlet hole of the clamping mechanism, realizing the firm fixation between the clamping ring and the fixing ring. The oil inlet holes are respectively opened inside the fixing ring and the connecting ring, providing a channel for the circulation of hydraulic oil. Through the oil inlet holes, hydraulic oil can smoothly enter the connection part between the pull rod and the oil cylinder, realizing the drive and control of the pull rod. The threaded hole can be connected to the limiting hole, increasing the connection stability between the clamping mechanism and the limiting mechanism. The clamping ring is fixedly connected to the top of the oil cylinder body and cooperates with the connecting ring of the limiting mechanism to achieve the quick clamping of the pull rod and the oil cylinder. The design of the clamping ring makes the connection more convenient and fast, reducing the installation and disassembly time and improving production efficiency. The fixing shell is fixedly connected inside the clamping ring, which can limit and support the fixing block. The inlet hole is opened on the right side of the fixing shell, providing a channel for the fixing block to enter the inside of the fixing shell, enabling the quick fixation between the clamping ring and the fixing ring. The oil delivery hole is opened inside the clamping ring and cooperates with the oil inlet hole of the limiting mechanism to ensure that hydraulic oil can smoothly flow to the connection part between the pull rod and the oil cylinder. The connecting plate increases the structural strength and stability of the clamping ring. The limiting hole can be used to install other fixing devices, enabling threaded fixation between the connecting plate and the clamping ring, effectively preventing excessive displacement or loosening of the pull rod during operation, thereby improving machining accuracy and safety and ensuring the firm clamping of the tool;

[0021] 2. Compared with the existing high-strength CNC machine tool spindle pull rod, the present application achieves the effect of quickly connecting the pull rod and the oil cylinder body through the cooperation of the limiting mechanism and the clamping mechanism, improving the connection and disassembly efficiency between the pull rod and the oil cylinder body during actual use, thereby improving the replacement efficiency of the pull rod and the oil cylinder body for the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is the overall structure diagram of the high-strength CNC machine tool spindle pull rod of the present utility model;

[0023] Figure 2 This is the overall structure diagram of the limit mechanism of the present utility model;

[0024] Figure 3 This is the overall structure diagram of the clamping mechanism of the present utility model;

[0025] Figure 4 This is the structural schematic diagram of the protective pad of the present utility model;

[0026] Figure 5 This is the structural schematic diagram of the bolt of the present utility model;

[0027] Figure 6 This is the structural schematic diagram of the airtight pad of the present utility model.

[0028] In the figure, 1 is the pull rod body; 2 is the limit mechanism; 201 is the fixed ring; 202 is the connecting ring; 203 is the fixed block; 204 is the oil inlet hole; 205 is the threaded hole; 3 is the clamping mechanism; 301 is the clamping ring; 302 is the fixed shell; 303 is the inlet block hole; 304 is the oil delivery hole; 305 is the connecting plate; 306 is the limit hole; 4 is the oil cylinder body; 5 is the protective pad; 6 is the bolt; 7 is the rubber pad; 8 is the protective pad; 9 is the sealing ring; 10 is the airtight pad. Specific embodiments

[0029] 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.

[0030] Please refer to Figures 1-6 , the present utility model provides the following technical solutions:

[0031] A high-strength spindle pull rod for a numerically controlled machine tool includes a pull rod body 1. The bottom of the pull rod body 1 is fixedly connected with a limit mechanism 2. The bottom of the limit mechanism 2 is clamped with a clamping mechanism 3. The bottom of the clamping mechanism 3 is fixedly connected with an oil cylinder body 4;

[0032] The limit mechanism 2 includes a fixed ring 201, a connecting ring 202, a fixed block 203, an oil inlet hole 204 and a threaded hole 205. The fixed ring 201 is fixedly connected to the bottom of the pull rod body 1. The connecting ring 202 is fixedly connected to the bottom of the fixed ring 201. The fixed block 203 is fixedly connected to the inner side of the connecting ring 202. The oil inlet holes 204 are respectively opened on the inner sides of the fixed ring 201 and the connecting ring 202. The threaded hole 205 is opened on the surface of the fixed ring 201.

[0033] In this embodiment: By setting the pull rod body 1, the pull rod body 1 serves as the core component of the entire spindle pull rod, mainly playing the role of transmitting tensile force and clamping the tool, and can support and limit the limiting mechanism 2. The oil cylinder body 4 provides a power source for the pull rod. Through the pressure action of hydraulic oil, it drives the pull rod to clamp and loosen the tool. The fixing ring 201 is fixedly connected to the bottom of the pull rod body 1, providing a stable installation foundation for the connecting ring 202 and other components. The connecting ring 202 plays the role of connecting the fixing ring 201 and the clamping mechanism 3, enabling an effective connection between the pull rod body 1 and the oil cylinder body 4. Its reasonable design and structure can ensure the stability and tightness of the connection, prevent hydraulic oil leakage, and ensure the normal operation of the pull rod. The fixing block 203 is located inside the connecting ring 202. On the one hand, it significantly enhances the structural strength of the connecting ring 202 and improves its anti-deformation ability. On the other hand, when cooperating with the clamping mechanism 3, it can accurately play a positioning and fixing role, ensuring the accuracy and stability of the clamping. When fixing is required, the fixing block 203 can enter the inside of the fixing shell 302 through the block inlet hole 303 of the clamping mechanism 3 to achieve a firm fixation between the clamping ring 301 and the fixing ring 201. The oil inlet holes 204 are respectively opened on the inner sides of the fixing ring 201 and the connecting ring 202, providing a channel for the flow of hydraulic oil. Through the oil inlet holes 204, hydraulic oil can smoothly enter the connection part between the pull rod and the oil cylinder to achieve the drive and control of the pull rod. The threaded hole 205 can be connected to the limiting hole 306 to increase the connection stability between the clamping mechanism 3 and the limiting mechanism 2.

[0034] Specifically, as Figure 3 、 Figure 4 、 Figure 5 shown, the clamping mechanism 3 includes a clamping ring 301, a fixing shell 302, a block inlet hole 303, an oil delivery hole 304, a connecting plate 305, and a limiting hole 306. The clamping ring 301 is fixedly connected to the top of the oil cylinder body 4.

[0035] Specifically, as Figure 3 、 Figure 4 、 Figure 5 shown, the fixing shell 302 is fixedly connected to the inside of the clamping ring 301. The block inlet hole 303 is opened on the right side of the fixing shell 302. The oil delivery hole 304 is opened on the inside of the clamping ring 301.

[0036] Specifically, as Figure 3 、 Figure 4 、 Figure 5 shown, the connecting plate 305 is welded to the surface of the clamping ring 301. The limiting hole 306 is opened on the inside of the top of the connecting plate 305.

[0037] In this embodiment: The clamping ring 301 is fixedly connected to the top of the oil cylinder body 4 and cooperates with the connecting ring 202 of the limiting mechanism 2 to achieve the quick clamping of the pull rod and the oil cylinder. The design of the clamping ring 301 makes the connection more convenient and fast, reduces the installation and disassembly time, improves the production efficiency. The fixed shell 302 is fixedly connected to the inside of the clamping ring 301, which can limit and support the fixed block 203. The block inlet hole 303 is opened on the right side of the fixed shell 302, providing a channel for the fixed block 203 to enter the inside of the fixed shell 302, enabling the quick fixation between the clamping ring 301 and the fixed ring 201. The oil delivery hole 304 is opened on the inside of the clamping ring 301 and cooperates with the oil inlet hole 204 of the limiting mechanism 2 to ensure that the hydraulic oil can smoothly flow to the connection part of the pull rod and the oil cylinder. The connecting plate 305 increases the structural strength and stability of the clamping ring 301. The limiting hole 306 can be used to install other fixing devices, and the connecting plate 305 and the clamping ring 301 are fixed by threads, effectively preventing the pull rod from excessive displacement or loosening during the working process, thereby improving the processing accuracy and safety and ensuring the firm clamping of the tool.

[0038] Specifically, as Figure 5 shown, a protective pad 5 is bolted to the inside of the fixed shell 302, and anti-slip grooves are engraved on the surface of the protective pad 5.

[0039] Specifically, as Figure 5 shown, a bolt 6 is movably connected to the inside of the limiting hole 306, and the bolt 6 passes through the limiting hole 306 and is threadedly connected to the inside of the threaded hole 205.

[0040] In this embodiment: By setting the protective pad 5, when the fixed block 203 enters the inside of the fixed shell 302 for clamping and fixing, the protective pad 5 can reduce the direct friction and collision between the fixed block 203 and the fixed shell 302, reduce wear, and extend the service life of the fixed shell 302 and the fixed block 203. By setting the anti-slip grooves, the friction force with the fixed block 203 is increased, making the fixation more stable and reliable, preventing the fixed block 203 from loosening due to vibration or other reasons during the working process, thereby ensuring the firm connection between the clamping ring 301 and the fixed ring 201. By setting the bolt 6, the bolt 6 passes through the limiting hole 306 and is threadedly connected to the inside of the threaded hole 205, further strengthening the connection stability between the limiting mechanism 2 and the clamping mechanism 3.

[0041] Specifically, as Figure 4 shown, a rubber pad 7 is sleeved on the surface of the connecting plate 305, and anti-slip grooves are engraved on the surface of the rubber pad 7.

[0042] Specifically, as Figure 4 shown, a protective pad 8 is bolted to the inner wall of the clamping ring 301, and anti-slip grooves are engraved on the surface of the protective pad 8.

[0043] In this embodiment: By providing the rubber pad 7, the rubber pad 7 can play a buffering role, reducing the impact force when the connecting plate 305 contacts other components, reducing noise and vibration. By providing anti-slip patterns, the friction with the contacting components is increased, improving the stability of the connecting plate 305 and preventing it from sliding or displacing during operation. By providing the protective pad 8, when the clamping ring 301 and the connecting ring 202 are clamped and connected, the protective pad 8 can avoid direct hard contact between the two, reducing wear and scratches. By providing anti-slip patterns, the friction with the connecting ring 202 is increased, making the connection more tight and reliable, and improving the overall stability of the spindle drawbar.

[0044] Specifically, as Figure 6 shown, a sealing ring 9 is bolted to the bottom of the drawbar body 1, and one side of the sealing ring 9 away from the drawbar body 1 is bolted to the inner side of the clamping ring 301.

[0045] Specifically, as Figure 6 shown, an airtight pad 10 is bolted to the bottom of the fixed ring 201, and the bottom of the airtight pad 10 contacts the top of the clamping ring 301.

[0046] In this embodiment: By providing the sealing ring 9, it can prevent hydraulic oil from leaking at the connection between the drawbar body 1 and the clamping ring 301, ensuring the sealing and stability of the hydraulic system. By providing the airtight pad 10, when the fixed ring 201 contacts the clamping ring 301, the airtight pad 10 can fill the tiny gap between the two, preventing gas leakage and ensuring the airtightness of the connection part.

[0047] Working principle: First, when it is necessary to connect the drawbar and the cylinder body 4. Then, the user inserts the connecting ring 202 into the inner side of the clamping ring 301 at the top of the cylinder body 4. At this time, the fixed block 203 is clamped on the right side of the inlet block hole 303. Then the user rotates the drawbar. When the drawbar rotates, it will drive the connecting ring 202 to rotate. After that, as the connecting ring 202 rotates, the fixed block 203 gradually enters the inner side of the fixed shell 302 through the inlet block hole 303. When the connecting ring 202 rotates, the fixed ring 201 also rotates accordingly, and the fixed ring 201 will drive the threaded hole 205 to rotate into the inner side of the limit hole 306. Then, the user inserts the bolt 6 into the limit hole 306 and threads it into the inner side of the threaded hole 205, making the clamping ring 301 and the connecting ring 202 tightly clamped. When the hydraulic system starts to work, the hydraulic oil flows into the inner side of the drawbar through the oil delivery hole 304. Finally, when it is necessary to maintain or disassemble the device, the user can first loosen the bolt 6, and then rotate the drawbar in the reverse direction, so that the fixed block 203 exits from the inner side of the fixed shell 302 through the inlet block hole 303, and thus the drawbar can be easily separated from the cylinder body 4 for maintenance, replacement of parts or other maintenance operations.

[0048] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A high-strength CNC machine tool spindle tie rod, comprising a tie rod body (1), characterized in that: The bottom of the pull rod body (1) is fixedly connected to a limiting mechanism (2), the bottom of the limiting mechanism (2) is clamped with a clamping mechanism (3), and the bottom of the clamping mechanism (3) is fixedly connected to a cylinder body (4); The limiting mechanism (2) comprises a fixing ring (201), a connecting ring (202), a fixing block (203), an oil inlet hole (204) and a threaded hole (205); the fixing ring (201) is fixedly connected to the bottom of the pull rod body (1); the connecting ring (202) is fixedly connected to the bottom of the fixing ring (201); the fixing block (203) is fixedly connected to the inner side of the connecting ring (202); the oil inlet hole (204) is respectively provided on the inner sides of the fixing ring (201) and the connecting ring (202); and the threaded hole (205) is provided on the inner side of the fixing ring (201).

2. The high-strength CNC machine tool spindle tie rod according to claim 1, characterized in that: The clamping mechanism (3) comprises a clamping ring (301), a fixing shell (302), a block inlet hole (303), an oil delivery hole (304), a connecting plate (305) and a limiting hole (306); the clamping ring (301) is fixedly connected to the top of the oil cylinder body (4).

3. The high-strength CNC machine tool spindle tie rod according to claim 2, characterized in that: The fixed shell (302) is fixedly connected to the inner side of the clamping ring (301), the block inlet hole (303) is opened on the right side of the fixed shell (302), and the oil delivery hole (304) is opened on the inner side of the clamping ring (301).

4. The high-strength CNC machine tool spindle tie rod according to claim 3, characterized in that: The connecting plate (305) is welded to the surface of the clamping ring (301), and the limiting hole (306) is opened on the inner side of the top of the connecting plate (305).

5. The high-strength CNC machine tool spindle tie rod according to claim 4, characterized in that: A protective pad (5) is bolted to the inner side of the fixed shell (302), and the surface of the protective pad (5) is engraved with anti-slip patterns.

6. The high-strength CNC machine tool spindle tie rod according to claim 5, characterized in that: A bolt (6) is movably connected to the inner side of the limiting hole (306), and the bolt (6) passes through the limiting hole (306) and is threadedly connected to the inner side of the threaded hole (205).

7. The high-strength CNC machine tool spindle tie rod according to claim 6, characterized in that: The surface of the connecting plate (305) is sleeved with a rubber pad (7), and the surface of the rubber pad (7) is engraved with anti-slip patterns.

8. The high-strength CNC machine tool spindle tie rod according to claim 7, characterized in that: A protective pad (8) is bolted to the inner wall of the clamping ring (301), and the surface of the protective pad (8) is engraved with anti-slip patterns.

9. The high-strength CNC machine tool spindle tie rod according to claim 8, characterized in that: A sealing ring (9) is bolted to the bottom of the pull rod body (1), and a side of the sealing ring (9) away from the pull rod body (1) is bolted to the inner side of the clamping ring (301).

10. The high-strength CNC machine tool spindle tie rod according to claim 9, characterized in that: An air-sealing pad (10) is bolted to the bottom of the fixing ring (201), and the bottom of the air-sealing pad (10) is in contact with the top of the clamping ring (301).

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