Main shaft mounting structure with damping mechanism

Abstract

The utility model discloses a main shaft installation structure with a damping mechanism, which relates to the technical field of main shaft installation and comprises a main shaft body, an installation frame is movably sleeved on the outer side of the main shaft body, the installation frame is installed on the end face of an installation base plate in a sliding mode through an installation assembly, and the installation base plate is fixedly installed on a machine tool. Damping mechanisms are arranged on the two sides of the front end of the mounting base plate. According to the main shaft mounting structure provided with the damping mechanism, the mounting positions of the sliding blocks and the guide rails are exchanged by arranging the mounting assemblies, so that the overall structure of the main shaft body, the mounting frame and the sliding blocks is reduced and lightened, the main shaft body, the mounting frame and the sliding blocks are slidably mounted in cooperation with the mounting base plate and the guide rails, and the mounting stability of the main shaft body can be effectively improved; and meanwhile, the damping mechanism is arranged to provide a damping effect when the main shaft body operates and the sliding block and the guide rail slide relatively, so that the protection stability of the mounting structure is further improved.

Description

Technical Field

[0001] This utility model relates to the field of spindle mounting technology, specifically to a spindle mounting structure equipped with a shock absorption mechanism. Background Technology

[0002] The spindle is an important component of a lathe. During the machining process on a lathe, the spindle is usually driven by a motor. Tools are mounted on the spindle, and the rotation of the spindle drives the tool to rotate, thus performing cutting operations.

[0003] The traditional spindle installation method is as follows: first, the spindle and the guide rail are movably connected, and then the guide rail is slidably connected to the slider fixed on the machine tool to realize the installation of the spindle. However, since the overall structure of the spindle and the guide rail is relatively heavy and large, relying solely on the slider on the machine tool for connection can easily lead to insufficient machining rigidity, low stability, and low cutting accuracy when the spindle rotates.

[0004] To address the aforementioned issues, innovative design based on existing equipment is urgently needed. Therefore, we proposed a spindle mounting structure with a shock absorption mechanism that can effectively solve these problems. Utility Model Content

[0005] The purpose of this utility model is to provide a spindle mounting structure with a shock absorption mechanism to solve the problems mentioned in the background art, which are that the overall structure of the spindle and guide rail is heavy and large, and the connection is made solely by the slider on the instrument, which easily leads to insufficient machining rigidity, low stability and low cutting accuracy when the spindle rotates.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a spindle mounting structure with a shock absorption mechanism, comprising a spindle body, a mounting frame movably sleeved on the outer side of the spindle body, a mounting base plate provided at the rear end of the mounting frame, and the mounting base plate being fixedly mounted on a machine tool by fasteners;

[0007] The mounting frame is slidably mounted on the end face of the mounting base via a mounting assembly. The mounting assembly includes four sliders fixedly connected to the rear end of the mounting frame, and a connecting frame is fixedly connected to the four sliders. Two symmetrically distributed guide rails are fixedly connected to the front face of the mounting base. The four sliders slide in pairs on the outer sides of the two guide rails. A fixing frame is fixedly mounted on the top of the end face of the mounting base, and an electric push rod is installed inside the fixing frame. The bottom of the electric push rod is fixedly connected to the top of the connecting frame. By setting the mounting assembly, compared with the traditional mounting method, the mounting positions of the sliders and guide rails are reversed, making the overall structure of the spindle body, mounting frame, and sliders smaller and lighter. Combined with the mounting base and guide rails mounted on the machine tool for sliding mounting, the stability of the spindle body mounting can be effectively improved, thereby improving the machining rigidity, stability, and cutting accuracy. Furthermore, the extension and retraction of the electric push rod drives the connecting frame and the four sliders to move up and down along the corresponding two guide rails, thereby moving the mounting frame and the spindle body, thus improving the flexibility of the spindle body driving the tool for machining.

[0008] The mounting base plate is provided with shock absorption mechanisms on both sides of the front end to provide shock absorption when the spindle body is operating and the slider slides relative to the guide rail, thereby further improving the protective stability of the mounting structure.

[0009] Preferably, the inner walls of both sides of the slider are provided with multiple evenly distributed grooves, and the outer walls of both sides of the guide rail are formed with multiple evenly distributed protrusions. Through the corresponding sliding connection between the multiple protrusions and the grooves, the accuracy and stability of the slider moving vertically along the guide rail can be effectively guaranteed.

[0010] Preferably, the four sliders are arranged in a matrix, the connecting frame has an "I" shaped structure, and its two ends are fixedly connected to the four sliders respectively. The bottom of the electric push rod is fixedly connected to the top center of the connecting frame. This connection structure can effectively ensure the stability and balance of the electric push rod moving along the corresponding guide rails through the connecting frame.

[0011] Preferably, the shock-absorbing assembly includes two rows of support rods fixedly connected to both sides of the front wall of the mounting base. A fixed sliding sleeve is fixedly connected to the top of the same row of support rods. A notch is provided on the side of the two fixed sliding sleeves that are close to each other. A magnetic layer is fixedly provided on the inner wall of each fixed sliding sleeve. A connecting block is fixedly connected to the outer side of the slider. The connecting block passes through the notch to the inner side of the corresponding fixed sliding sleeve. A shock-absorbing slide rod is fixedly connected to the side walls of the two connecting blocks on the same side. The shock-absorbing slide rod is magnetic and slides inside the fixed sliding sleeve. When the electric push rod drives the slider to rise and fall along the guide rail, the connecting block and the shock-absorbing slide rod move synchronously along the fixed sliding sleeve. Because the magnetic fields of the magnetic layer and the shock-absorbing slide rod repel each other, the shock-absorbing slide rod will be in a suspended state. This effectively reduces the sliding friction between the fixed sliding sleeve and the shock-absorbing slide rod, thus avoiding affecting the lifting speed of the spindle body. Furthermore, the repulsive force also improves the stability of the shock-absorbing slide rod sliding inside the fixed sliding sleeve, thereby further enhancing the sliding stability between the slider and the guide rail, and improving the device's anti-vibration performance.

[0012] Preferably, springs are fixedly connected to the inner walls of the top and bottom ends of the fixed sliding sleeve, and buffer blocks are fixedly connected to the ends of the springs. The two buffer blocks slide on the inner side of the fixed sliding sleeve. Through the cooperation of the upper and lower sets of springs and buffer blocks, the shock-absorbing slide rod can be slowed down and buffered when it moves up and down along the fixed sliding sleeve to near the top and bottom ends, thereby providing buffer protection when the slider and guide rail slide relative to each other.

[0013] Preferably, the top and bottom inner walls of the fixed sliding sleeve are fixedly connected to a guide rod located inside the spring. The end of the guide rod has an arc surface structure, and the end wall of the buffer block is formed with an arc surface groove. The guide rod can provide a fulcrum when the spring is squeezed to the bottom and rebounds, so as to balance its rebound force, thereby preventing the spring from deforming and reducing its elasticity during long-term use. In addition, the combination of the arc surface and the arc groove can dissipate some of the impact force when the guide rod and the buffer block come into contact, avoiding serious scratching and wear.

[0014] Preferably, a soft pad is fixedly bonded to the end face of the buffer block near the shock-absorbing slide bar, which can provide protection against contact compression between the buffer block and the shock-absorbing slide bar.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This spindle mounting structure with a shock-absorbing mechanism, by setting mounting components and reversing the mounting positions of the slider and guide rail, makes the overall structure of the spindle body, mounting frame, and slider smaller and lighter. Combined with the mounting base plate and guide rail for sliding mounting, it can effectively improve the stability of the spindle body mounting, thereby improving machining rigidity, stability, and cutting accuracy. Simultaneously, by setting a shock-absorbing mechanism, it provides a shock-absorbing effect when the spindle body operates and when the slider and guide rail slide relative to each other, thereby further improving the protective stability of the mounting structure. The specific details are as follows:

[0016] (1) By setting up the mounting components, compared with the traditional mounting method, the mounting positions of the slider and guide rail are reversed, making the overall structure of the spindle body, mounting frame and slider smaller and lighter. Combined with the mounting base plate and guide rail installed on the machine tool, the stability of the spindle body installation can be effectively improved, thereby improving the machining rigidity, stability and cutting accuracy. Furthermore, by extending and retracting the electric push rod, the connecting frame and slider are moved up and down along the guide rail, thereby moving the mounting frame and spindle body, thus improving the flexibility of the spindle body to drive the tool for machining.

[0017] (2) By setting up a damping mechanism, when the electric push rod drives the slider to rise and fall along the guide rail, the connecting block and the damping slide rod move synchronously along the fixed slide sleeve. Since the magnetic field of the magnetic layer and the damping slide rod are repulsed, the damping slide rod will be in a suspended state. This can effectively reduce the sliding friction between the fixed slide sleeve and the damping slide rod to avoid affecting the lifting speed of the main shaft body. Moreover, the repulsive force can also improve the stability of the damping slide rod sliding inside the fixed slide sleeve, thereby helping to strengthen the sliding stability between the slider and the guide rail, so as to improve the anti-vibration performance of the device.

[0018] (3) By cooperating with the upper and lower sets of springs and buffer blocks in the fixed slide sleeve, the shock-absorbing slide rod can be slowed down and buffered when it moves up and down along the fixed slide sleeve to near the top and bottom ends, thereby providing buffer protection when the slider and guide rail slide relative to each other.

[0019] (4) By setting the guide rod on the inner side of the spring, a fulcrum can be provided when the spring is squeezed to the bottom and rebounds, so as to balance its rebound force, thereby preventing the spring from deforming and reducing the elastic force during long-term use. In addition, by setting the arc surface and the arc groove together, some impact force can be dissipated when the guide rod and the buffer block come into contact, avoiding serious scratching and wear. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2This is a schematic diagram of the connection structure between the mounting base plate and the guide rail of this utility model;

[0022] Figure 3 This is a schematic diagram of the connection structure between the mounting frame and the slider of this utility model;

[0023] Figure 4 This is a schematic diagram of the connection structure between the slider and the fixed sliding sleeve of this utility model;

[0024] Figure 5 For this utility model Figure 4 Enlarged schematic diagram of the connection structure at point A;

[0025] Figure 6 This is a schematic diagram of the internal cross-sectional structure of the fixed sliding sleeve of this utility model.

[0026] In the diagram: 1. Spindle body; 2. Mounting frame; 3. Slider; 4. Mounting base plate; 5. Guide rail; 6. Connecting frame; 7. Fixing frame; 8. Electric push rod; 9. Support rod; 10. Fixed sliding sleeve; 11. Magnetized layer; 12. Connecting block; 13. Shock-absorbing slide rod; 14. Guide rod; 15. Spring; 16. Buffer block; 17. Soft pad. Detailed Implementation

[0027] 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.

[0028] Example 1: Please refer to Figures 1-6 The present invention provides the following technical solution: a spindle mounting structure with a shock absorption mechanism, including a spindle body 1, a mounting frame 2 movably sleeved on the outer side of the spindle body 1, a mounting base plate 4 provided at the rear end of the mounting frame 2, and the mounting base plate 4 being fixedly mounted on the machine tool by fasteners.

[0029] The mounting frame 2 is slidably mounted on the end face of the mounting base 4 via a mounting assembly. The mounting assembly includes four sliders 3 fixedly connected to the rear end of the mounting frame 2, and a connecting frame 6 is fixedly connected to the four sliders 3. Two symmetrically distributed guide rails 5 are fixedly connected to the front end face of the mounting base 4. The four sliders 3 slide in pairs on the outer sides of the two guide rails 5. The inner walls of both sides of the sliders 3 have multiple evenly distributed grooves, and the outer walls of both sides of the guide rails 5 have multiple evenly distributed protrusions. Through the corresponding sliding connection between the protrusions and the grooves, the sliders 3 can be effectively kept vertical along the guide rails 5. To ensure the accuracy and stability of the movement, a fixed frame 7 is fixedly installed on the top of the end face of the mounting base 4. An electric push rod 8 is installed inside the fixed frame 7. The bottom of the electric push rod 8 is fixedly connected to the top of the connecting frame 6. The four sliders 3 are arranged in a matrix. The connecting frame 6 has an "I" shaped structure, and its two ends are fixedly connected to the four sliders 3 respectively. The bottom of the electric push rod 8 is fixedly connected to the top center of the connecting frame 6. This connection structure can effectively ensure the stability and balance of the electric push rod 8 moving along the corresponding guide rail 5 by extending and retracting through the connecting frame 6 to drive the four sliders 3.

[0030] By setting up mounting components, compared to the traditional mounting method, the mounting positions of slider 3 and guide rail 5 are reversed, making the overall structure of spindle body 1, mounting frame 2 and slider 3 smaller and lighter. Combined with the mounting base plate 4 and guide rail 5 mounted on the machine tool for sliding installation, the stability of spindle body 1 can be effectively improved, thereby improving machining rigidity, stability and cutting accuracy. Furthermore, the extension and retraction of the electric push rod 8 drives the connecting frame 6 and the four sliders 3 to move up and down along the corresponding two guide rails 5, thereby moving the mounting frame 2 and spindle body 1, thus improving the flexibility of spindle body 1 in driving the tool for machining.

[0031] Example 2:

[0032] Based on Embodiment 1, shock-absorbing mechanisms are provided on both sides of the front end of the mounting base 4 to provide shock absorption when the spindle body 1 operates and the slider 3 slides relative to the guide rail 5, thereby further improving the protective stability of the mounting structure. Specifically, the shock-absorbing components include two rows of support rods 9 fixedly connected to both sides of the front end wall of the mounting base 4. The top of the same row of support rods 9 is fixedly connected to a fixed sliding sleeve 10. A notch is opened on the side of the two fixed sliding sleeves 10 that are close to each other. A magnetic layer 11 is fixedly provided on the inner wall of the fixed sliding sleeve 10. A connecting block 12 is fixedly connected to the outer side of the slider 3. The connecting block 12 penetrates the notch to the inner side of the corresponding fixed sliding sleeve 10. The side walls of the two connecting blocks 12 on the same side are connected to the fixed sliding sleeve 10. A shock-absorbing slide rod 13 is fixedly connected to the main shaft body 10. The shock-absorbing slide rod 13 is magnetic and slides inside the fixed slide sleeve 10. When the electric push rod 8 drives the slider 3 to move up and down along the guide rail 5, the connecting block 12 and the shock-absorbing slide rod 13 move synchronously along the fixed slide sleeve 10. Since the magnetic field of the magnetic layer 11 and the shock-absorbing slide rod 13 are repelled, the shock-absorbing slide rod 13 will be in a suspended state. This can effectively reduce the sliding friction between the fixed slide sleeve 10 and the shock-absorbing slide rod 13, so as to avoid affecting the lifting speed of the main shaft body 1. Moreover, the repulsive force can also improve the stability of the shock-absorbing slide rod 13 sliding inside the fixed slide sleeve 10, thereby helping to strengthen the sliding stability between the slider 3 and the guide rail 5, so as to improve the anti-vibration performance of the device.

[0033] In addition, springs 15 are fixedly connected to the inner walls of the top and bottom ends of the fixed sliding sleeve 10. Buffer blocks 16 are fixedly connected to the ends of the springs 15. The two buffer blocks 16 slide inside the fixed sliding sleeve 10. Through the cooperation of the upper and lower sets of springs 15 and buffer blocks 16, the shock-absorbing slide rod 13 can be slowed down and buffered when it moves up and down along the fixed sliding sleeve 10 to near the top and bottom ends, thereby providing buffer protection when the slider 3 and the guide rail 5 slide relative to each other. In addition, a soft pad 17 is fixedly bonded to the end face of the buffer block 16 near the shock-absorbing slide rod 13. The soft pad 17 can provide protection against contact compression between the buffer block 16 and the shock-absorbing slide rod 13.

[0034] Meanwhile, the top and bottom inner walls of the fixed sliding sleeve 10 are fixedly connected to a guide rod 14 located inside the spring 15. The end of the guide rod 14 has an arc surface structure, and the end wall of the buffer block 16 is formed with an arc surface groove. The guide rod 14 can provide a fulcrum when the spring 15 is squeezed to the bottom and rebounds, so as to balance its rebound force, thereby preventing the spring 15 from deforming and reducing its elasticity during long-term use. In addition, through the cooperation of the arc surface and the arc groove, some of the impact force can be dissipated when the guide rod 14 and the buffer block 16 come into contact, avoiding serious scratching and wear.

[0035] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0036] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A spindle mounting structure with a shock absorption mechanism, comprising a spindle body (1), a mounting frame (2) movably sleeved on the outer side of the spindle body (1), a mounting base plate (4) provided at the rear end of the mounting frame (2), and the mounting base plate (4) being fixedly mounted on a machine tool by fasteners. Its features are: The mounting frame (2) is slidably mounted on the end face of the mounting base (4) via the mounting assembly. The mounting assembly includes four sliders (3) fixedly connected to the rear end of the mounting frame (2). A connecting frame (6) is fixedly connected between the four sliders (3). Two guide rails (5) are symmetrically distributed and fixedly connected to the front end face of the mounting base (4). The four sliders (3) slide on the outside of the two guide rails (5) in pairs. A fixing frame (7) is fixedly mounted on the top of the end face of the mounting base (4). An electric push rod (8) is installed inside the fixing frame (7). The bottom of the electric push rod (8) is fixedly connected to the top of the connecting frame (6). The mounting base plate (4) is provided with shock absorption mechanisms on both sides of its front end.

2. The spindle mounting structure with a damping mechanism according to claim 1, characterized in that: The inner walls of both sides of the slider (3) are provided with a number of evenly distributed grooves, and the outer walls of both sides of the guide rail (5) are formed with a number of evenly distributed convex edges.

3. A spindle mounting structure with a shock absorption mechanism according to claim 2, characterized in that: The four sliders (3) are arranged in a matrix, the connecting frame (6) has an "I" shaped structure, and the ends on both sides are fixedly connected to the four sliders (3) respectively. The bottom of the electric push rod (8) is fixedly connected to the top center of the connecting frame (6).

4. A spindle mounting structure with a shock absorption mechanism according to claim 1, characterized in that: The shock absorption mechanism includes two rows of support rods (9) fixedly connected to both sides of the front wall of the mounting base plate (4). The top of the same row of support rods (9) is fixedly connected to a fixed sleeve (10). A notch is opened on the side of the two fixed sleeves (10) that are close to each other. A magnetic layer (11) is fixedly provided on the inner wall of the fixed sleeve (10). A connecting block (12) is fixedly connected to the outer side of the slider (3). The connecting block (12) passes through the notch to the inner side of the corresponding fixed sleeve (10). The side walls of the two connecting blocks (12) located on the same side are fixedly connected to a shock absorption slide rod (13). The shock absorption slide rod (13) is magnetic and slides on the inner side of the fixed sleeve (10).

5. A spindle mounting structure with a damping mechanism according to claim 4, characterized in that: The top and bottom inner walls of the fixed sliding sleeve (10) are both fixedly connected with springs (15), and the ends of the springs (15) are fixedly connected with buffer blocks (16). The two buffer blocks (16) slide on the inner side of the fixed sliding sleeve (10).

6. A spindle mounting structure with a shock absorption mechanism according to claim 5, characterized in that: The top and bottom inner walls of the fixed sliding sleeve (10) are fixedly connected to a guide rod (14) located inside the spring (15). The end of the guide rod (14) is an arc surface structure, and the end wall of the buffer block (16) is formed with an arc surface groove.

7. A spindle mounting structure with a shock absorption mechanism according to claim 6, characterized in that: A soft pad (17) is fixedly bonded to the end face of the buffer block (16) near the shock-absorbing slide bar (13).

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