Anti-vibration machine tool bed structure

Abstract

The utility model relates to machine tool anti -seismic technical field especially is a kind of anti -seismic machine tool bed structure, including bed frame, the bottom end of bed frame is fixed with support plate, and the bottom end of support plate is installed with support foot buffer mechanism;Support foot buffer mechanism includes main support column, and the top of main support column outside is fixed with rubber sleeve, and the top of main support column outside is installed with first buffer sleeve, and the middle part of main support column outside is installed with rubber disc subassembly, and the bottom of main support column outside is installed with second buffer sleeve;First buffer sleeve includes central box body, and the outside of central box body is fixed with four arc-shaped box body of circular array, and the inboard of arc-shaped box body is fixed with hinged seat, and the front end of hinged seat is hinged with inclined damping arm, and inclined damping arm and the outside of main support column are hinged and cooperate, in the utility model, it is realized to the all -round absorption of transverse, longitudinal and inclined direction vibration, effectively weakens the multidirectional vibration when machine tool runs, guarantee processing accuracy, satisfy actual shock attenuation demand.

Description

Technical Field

[0001] This utility model relates to the field of machine tool anti-vibration technology, specifically to an anti-vibration machine tool bed structure. Background Technology

[0002] In machine tool equipment, there is a type of machine tool whose bed adopts a rectangular frame structure. During the use of this type of machine tool, when a pulling operation is performed, the bed will rub against the ground, which will generate vibration. In order to alleviate this lateral and longitudinal pulling vibration, the conventional practice is to install X-axis vibration dampers and Y-axis vibration dampers at the bottom of the machine tool bed respectively. These two types of vibration dampers are used to specifically absorb the vibration energy in the lateral and longitudinal directions. However, in actual use, it has been found that the machine tool bed itself will also cause vibration when the equipment is in operation. Moreover, this kind of vibration is not limited to the horizontal and vertical directions. Due to factors such as the coordinated operation of various components during machine tool operation, vibration from the tilt direction will be generated. The existing X-axis and Y-axis vibration dampers are mainly designed for the horizontal vibration in the horizontal and vertical directions. They are difficult to effectively absorb vibration in the tilt direction and cannot meet the vibration damping needs of machine tools in actual operation. Therefore, a shock-resistant machine tool bed structure is proposed to address the above problems. Utility Model Content

[0003] The purpose of this utility model is to provide a shock-resistant machine tool bed structure to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A shock-resistant machine tool bed structure includes a bed frame, a support plate fixed to the bottom end of the bed frame, and a foot buffer mechanism installed at the bottom end of the support plate. The foot buffer mechanism includes a main support column, a rubber sleeve fixed to the upper outer side of the main support column, a first buffer sleeve installed at the top of the outer side of the main support column, a rubber disc assembly installed in the middle of the outer side of the main support column, and a second buffer sleeve installed at the bottom of the outer side of the main support column. The first buffer sleeve includes a central box, four arc-shaped boxes arranged in a circular array fixed to the outer side of the central box, a hinge seat fixed to the inner side of the arc-shaped box, an inclined shock-absorbing arm hinged to the front end of the hinge seat, the inclined shock-absorbing arm being hinged to the outer side of the main support column, and a connecting plate fixed to the bottom end of the central box. The rubber disc assembly includes an outer fixing box, a rubber disc fixed to the inner side of the outer fixing box, a circular groove formed on the upper surface of the rubber disc, and a rotatable engagement between the top end of the inner side of the outer fixing box and the connecting plate.

[0005] As a further optimization of this utility model, the main support column includes an inner core column, an outer bushing is fitted on the outer side of the inner core column, the top and bottom of the outer bushing are fixed with connecting ears arranged in a circular array, the bottom of the inner side of the outer bushing is fixed with a telescopic shock absorber, and the inner side of the outer bushing is provided with a buffer groove arranged in a circular array.

[0006] As a further optimization of this utility model, the lower surface of the connecting disc is in contact with the upper surface of the rubber disc, the center of the connecting disc and the center of the rubber disc are located on the same central axis, and an angle fixing hole is provided on the upper surface of the connecting disc.

[0007] As a further optimization of this utility model, the second buffer sleeve has the same structure as the first buffer sleeve, the first buffer sleeve is located above the second buffer sleeve, the center of the first buffer sleeve and the center of the second buffer sleeve are located on the same central axis, the included angle between the first buffer sleeve and the second buffer sleeve is between 30° and 45°, and the top end of the second buffer sleeve is fixedly connected to the bottom end of the outer fixing box.

[0008] As a further optimization of this utility model, the number of connecting ears is the same as the number of tilting shock absorbers, and the telescopic end of the tilting shock absorber is hinged to the inside of the connecting ear.

[0009] As a further optimization of this utility model, the center of the telescopic damping component and the center of the inner core column are located on the same central axis, the telescopic end of the telescopic damping component is fixedly connected to the bottom end of the inner core column, and the buffer groove is parallel to the inner core column.

[0010] As a further optimization of this utility model, the outer walls of the first buffer sleeve and the second buffer sleeve are both fixed with linearly arranged reinforcing ribs, and the cross-sectional shape of the reinforcing ribs is circular.

[0011] Compared with the prior art, the beneficial effects of this utility model are: In this invention, by setting up a double-layer structure of the main support column, a first buffer sleeve and a second buffer sleeve, as well as their inclined shock-absorbing arms and rubber disc assemblies, the all-round absorption of vibrations in the lateral, longitudinal and inclined directions is achieved, which effectively weakens the multi-directional vibrations during machine tool operation, ensures machining accuracy, and meets actual vibration reduction requirements. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the support leg buffer mechanism of this utility model; Figure 3 This is an exploded view of the first buffer sleeve of this utility model; Figure 4 This is an exploded structural diagram of the rubber disc assembly of this utility model; Figure 5 This is a schematic diagram of the main support column of this utility model; Figure 6 This is a cross-sectional structural diagram of the main support column of this utility model.

[0013] In the picture: 1. Bed frame; 2. Support panel; 3. Support leg buffer mechanism; 31. Main support column; 311. Inner core column; 312. Outer bushing; 313. Connecting lug; 314. Telescopic shock absorber; 315. Buffer groove; 32. Rubber sleeve; 33. First buffer sleeve; 331. Central box; 332. Arc-shaped box; 333. Hinge seat; 334. Inclined shock absorber arm; 335. Connecting plate; 336. Angle fixing hole; 34. Rubber disc assembly; 341. External fixing box; 342. Rubber disc; 343. Circular groove; 35. Second buffer sleeve; 36. Reinforcing rib. Detailed Implementation

[0014] 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.

[0015] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0016] Please see Figures 1-6 This utility model provides a technical solution: A shock-resistant machine tool bed structure includes a bed frame 1, a support plate 2 fixed to the bottom end of the bed frame 1, and a foot buffer mechanism 3 installed at the bottom end of the support plate 2. The foot buffer mechanism 3 includes a main support column 31, a rubber sleeve 32 fixed to the upper outer side of the main support column 31, a first buffer sleeve 33 installed at the top outer side of the main support column 31, a rubber disc assembly 34 installed in the middle of the outer side of the main support column 31, and a second buffer sleeve 35 installed at the bottom outer side of the main support column 31. The first buffer sleeve 33 includes a central box 331, and the outer side of the central box 331 is fixed with... There are four arc-shaped boxes 332 arranged in a circular array. A hinge seat 333 is fixed to the inner side of the arc-shaped box 332. An inclined shock-absorbing arm 334 is hinged to the front end of the hinge seat 333. The inclined shock-absorbing arm 334 is hinged to the outer side of the main support column 31. A connecting plate 335 is fixed to the bottom end of the central box 331. The rubber plate assembly 34 includes an outer fixing box 341. A rubber plate 342 is fixed to the inner side of the outer fixing box 341. A circular groove 343 is opened on the upper surface of the rubber plate 342. The top end of the inner side of the outer fixing box 341 is rotatably engaged with the connecting plate 335. Specifically, the main support column 31 includes an inner core column 311, an outer bushing 312 is fitted on the outer side of the inner core column 311, and connecting ears 313 arranged in a circular array are fixed at the top and bottom of the outer wall of the outer bushing 312. A telescopic shock absorber 314 is fixed at the bottom of the inner side of the outer bushing 312, and a buffer groove 315 arranged in a circular array is opened inside the outer bushing 312. To further explain, the inner core column 311 and the outer bushing 312 of the main support column 31 form a double-layer support structure, which enhances the overall rigidity; the connecting ear 313 precisely aligns with the inclined damping arm 334 to ensure efficient transmission of vibration energy; the telescopic damping component 314 specifically absorbs longitudinal vibration, and the buffer groove 315 enhances the buffering capacity of the outer bushing 312 through uniform deformation. The multiple components work together to improve the comprehensive seismic performance of the main support column 31. As a further implementation of this solution, the number of connecting ears 313 is the same as the number of tilting damping arms 334. The telescopic end of the tilting damping arm 334 is hinged to the inside of the connecting ear 313. The center of the telescopic damping member 314 and the center of the inner core column 311 are located on the same central axis. The telescopic end of the telescopic damping member 314 is fixedly connected to the bottom end of the inner core column 311. The buffer groove 315 is parallel to the inner core column 311. To further explain, the number of connecting ears 313 and inclined damping arms 334 are matched to ensure uniform and complete vibration transmission. The inclined damping arms 334 and connecting ears 313 are hinged to ensure flexible telescopic deformation. The telescopic damping component 314 is coaxially connected to the inner core column 311 to ensure accurate longitudinal damping. The buffer groove 315 is set parallel to the inner core column 311 to improve vibration absorption efficiency. As a further implementation of this solution, the lower surface of the connecting plate 335 is in contact with the upper surface of the rubber plate 342, the center of the connecting plate 335 and the center of the rubber plate 342 are located on the same central axis, and the upper surface of the connecting plate 335 is provided with an angle fixing hole 336. To further explain, the connecting plate 335 and the rubber plate 342 are fitted together and coaxial, ensuring smooth rotation without jamming during angle adjustment. The angle fixing hole 336 and the circular groove 343 cooperate to achieve rigid angle fixation through bolts, preventing angle deviation when the first buffer sleeve 33 is working. The elastic properties of the rubber plate 342 can also help absorb the small vibrations transmitted by the connecting plate 335, improving the stability of the adjustment structure. As a further implementation of this solution, the second buffer sleeve 35 has the same structure as the first buffer sleeve 33. The first buffer sleeve 33 is located above the second buffer sleeve 35. The center of the first buffer sleeve 33 and the center of the second buffer sleeve 35 are located on the same central axis. The included angle between the first buffer sleeve 33 and the second buffer sleeve 35 is between 30° and 45°. The top end of the second buffer sleeve 35 is fixedly connected to the bottom end of the outer fixing box 341. To further explain, the second buffer sleeve 35 has the same structure as the first buffer sleeve 33, ensuring consistent shock absorption performance in the horizontal, longitudinal, and inclined directions. The 30°-45° angle design precisely covers the horizontal vibration dimension, forming an all-round shock absorption network. As a further implementation of this solution, the outer walls of the first buffer sleeve 33 and the second buffer sleeve 35 are both fixed with linearly arranged reinforcing ribs 36. The cross-sectional shape of the reinforcing ribs 36 is circular, which enhances the deformation resistance of the first buffer sleeve 33 and the second buffer sleeve 35. Work process: The bed frame 1 is fixed to the support plate 2 and the support foot buffer mechanism 3. The outer bushing 312 of the main support column 31 is sleeved on the outside of the inner core column 311. The telescopic shock absorber 314 connects the bottom of the two to form a basic support. Since the first buffer sleeve 33 needs to specifically deal with the vibration in the tilt direction, its angle needs to be adjusted according to the main direction of the tilt vibration when the machine tool is working, such as the tilt and sway of the bed caused by the tilt force of the tool during processing. Rotate the central box 331 so that the connecting plate 335 at the bottom rotates along the upper surface of the rubber plate 342. The outer fixing box 341 fixes the position of the rubber plate 342 to ensure that the rotation process is stable and without deviation. After the central box 331 drives the arc-shaped box 332 and the inclined shock-absorbing arm 334 to rotate to an angle that matches the inclined vibration direction, insert the bolt into the angle fixing hole 336 of the connecting plate 335 and screw it into the round groove 343 of the rubber plate 342 to complete the angle fixing of the first buffer sleeve 33, ensuring that its inclined shock-absorbing arm 334 can accurately bear the vibration transmission in the inclined direction. When the machine tool vibrates in the tilt direction, such as when the eccentric force of the components working together causes the bed to tilt and shake, the vibration energy is transmitted through the bed frame 1 and the support plate 2 to the outer bushing 312 of the main support column 31. Then, through the connecting ears 313 arranged in a circular array at the top of the outer bushing 312, it is precisely transmitted to the tilt damping arm 334 of the first buffer sleeve 33. If the vibration direction is "outward tilting and pulling", the tilt damping arm 334 is stretched along the axis by the tension of the connecting ears 313. The damping spring inside the tilt damping arm 334 deforms accordingly, converting the vibration energy in the tilt direction into elastic potential energy, thus achieving preliminary damping. If the vibration direction is "inward tilting and squeezing", the tilt damping arm 334 is contracted along the axis by the thrust of the connecting ears 313. The internal damping spring is compressed and deformed, thus absorbing the tilt vibration energy. During this process, the arc-shaped box 332, being fixed to the central box 331, will undergo slight elastic deformation as the tilting shock-absorbing arm 334 extends and retracts, thus assisting in buffering vibrations. The buffer groove 315 inside the outer bushing 312 enhances the overall buffering performance of the outer bushing 312 through its own deformation, reducing the transmission of vibrations to the core structure of the main support column 31. Meanwhile, the rubber sleeve 32 on the outside of the main support column 31 simultaneously absorbs high-frequency, small-amplitude tilting vibrations, further weakening the impact of vibrations on the bed. The second buffer sleeve 35 has the same structure as the first buffer sleeve 33. Because it forms an angle of 30°-45° with the first buffer sleeve 33, the orientation of its inclined shock-absorbing arm 334 is adapted to the lateral and longitudinal vibration directions. The working process is the same as that of the first buffer sleeve 33. When the machine tool generates lateral or longitudinal vibration, the vibration energy is transmitted through the connecting lug 313 at the bottom of the outer bushing 312 to the inclined damping arm 334 of the second buffer sleeve 35. Through the extension and contraction deformation of the inclined damping arm 334 and the auxiliary buffering of the arc-shaped box 332, the lateral and longitudinal vibration energy is absorbed. The reinforcing ribs 36 on the outer wall improve the damping effect by increasing the contact area. The circular groove 343 of the rubber disc 342 is pre-stored with lubricant. When the angle of the first buffer sleeve 33 is adjusted, the relative rotation of the connecting disc 335 and the rubber disc 342 causes the lubricant to be evenly attached to the contact surface. At the same time, it penetrates to the hinge of the inclined damping arm 334 and the connecting ear 313, reducing wear. After the vibration disappears, the inclined damping arm 334 returns to its original position with its own elasticity, the rubber sleeve 32 and the rubber disc 342 restore their deformation, and the support foot buffer mechanism 3 returns to its initial state, continuously coping with multi-directional vibration and ensuring the machining accuracy of the machine tool.

[0017] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A shock-resistant machine tool bed structure, comprising a bed frame (1), characterized in that: The bottom end of the bed frame (1) is fixed with a support plate (2), and the bottom end of the support plate (2) is equipped with a foot buffer mechanism (3). The foot buffer mechanism (3) includes a main support column (31), a rubber sleeve (32) is fixed on the upper part of the outer side of the main support column (31), a first buffer sleeve (33) is installed on the top of the outer side of the main support column (31), a rubber disc assembly (34) is installed in the middle of the outer side of the main support column (31), and a second buffer sleeve (35) is installed at the bottom of the outer side of the main support column (31). The first buffer sleeve (33) includes a central box (331), four arc-shaped boxes (332) arranged in a circular array are fixed on the outside of the central box (331), a hinge seat (333) is fixed on the inside of the arc-shaped box (332), an inclined shock-absorbing arm (334) is hinged to the front end of the hinge seat (333), the inclined shock-absorbing arm (334) is hinged to the outside of the main support column (31), and a connecting plate (335) is fixed at the bottom end of the central box (331). The rubber disc assembly (34) includes an outer fixing box (341), a rubber disc (342) is fixed inside the outer fixing box (341), a circular groove (343) is provided on the upper surface of the rubber disc (342), and the top of the inner side of the outer fixing box (341) is rotatably engaged with the connecting disc (335).

2. The earthquake-resistant machine tool bed structure according to claim 1, characterized in that: The main support column (31) includes an inner core column (311), an outer bushing (312) is fitted on the outer side of the inner core column (311), and connecting ears (313) arranged in a circular array are fixed on the top and bottom of the outer wall of the outer bushing (312). A telescopic shock absorber (314) is fixed on the bottom of the inner side of the outer bushing (312), and a buffer groove (315) arranged in a circular array is opened inside the outer bushing (312).

3. The earthquake-resistant machine tool bed structure according to claim 1, characterized in that: The lower surface of the connecting disc (335) is in contact with the upper surface of the rubber disc (342). The center of the connecting disc (335) and the center of the rubber disc (342) are located on the same central axis. An angle fixing hole (336) is provided on the upper surface of the connecting disc (335).

4. The earthquake-resistant machine tool bed structure according to claim 1, characterized in that: The second buffer sleeve (35) has the same structure as the first buffer sleeve (33). The first buffer sleeve (33) is located above the second buffer sleeve (35). The center of the first buffer sleeve (33) and the center of the second buffer sleeve (35) are on the same central axis. The angle between the first buffer sleeve (33) and the second buffer sleeve (35) is between 30° and 45°. The top end of the second buffer sleeve (35) is fixedly connected to the bottom end of the outer fixing box (341).

5. The earthquake-resistant machine tool bed structure according to claim 2, characterized in that: The number of connecting ears (313) is the same as the number of tilting shock absorbers (334), and the telescopic end of the tilting shock absorber (334) is hinged to the inside of the connecting ears (313).

6. The earthquake-resistant machine tool bed structure according to claim 2, characterized in that: The center of the telescopic damper (314) and the center of the inner core column (311) are located on the same central axis. The telescopic end of the telescopic damper (314) is fixedly connected to the bottom end of the inner core column (311). The buffer groove (315) is parallel to the inner core column (311).

7. The earthquake-resistant machine tool bed structure according to claim 1, characterized in that: The outer walls of the first buffer sleeve (33) and the second buffer sleeve (35) are both fixed with reinforcing ribs (36) arranged in a linear pattern, and the cross-sectional shape of the reinforcing ribs (36) is circular.

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