A vibration-proof and noise-reducing machining workbench structure

Abstract

The utility model discloses a kind of machining workbench structures of anti-vibration noise reduction, belong to machining equipment technical field, including table top, base, be between the shock-absorbing mechanism of the table top and the base, and be set in the fixed assembly of the table top top T-shaped groove, the shock-absorbing mechanism includes honeycomb plate and the damping block fixed in the honeycomb plate inside, the fixed assembly includes I-shaped block, is set in the expansion block and second screw of the I-shaped block inside, the groove bottom of the T-shaped groove is also provided with groove, and is equipped with including dead angle brush and the dust removal mechanism of the scraping block cooperation with the groove. The utility model solves the problem that workbench vibration in the prior art affects machining accuracy and T-shaped groove is difficult to clean, with the effect that vibration reduction and noise reduction effect is remarkable, machining stability is high, cleaning is convenient and thorough.

Description

Technical Field

[0001] This utility model relates to the field of machining equipment technology, and in particular to a vibration-damping and noise-reducing machining workbench structure. Background Technology

[0002] Machining worktables are an indispensable basic piece of equipment in the field of mechanical processing. They are mainly used to install and fix workpiece fixtures and workpieces to be processed, providing a stable load-bearing platform for the entire processing.

[0003] In modern machining processes such as high-speed cutting and heavy-duty milling, the rotation of the machine tool spindle, the impact between the tool and the workpiece, and the starting and stopping of the servo motor all generate continuous or intermittent mechanical vibrations.

[0004] These vibrations are transmitted directly from the machine tool bed to the machining table, and further cause slight displacement or high-frequency vibration of the fixture and workpiece mounted on the worktable, which disrupts the relative motion relationship between the tool and the workpiece, resulting in a decrease in the surface finish of the machined parts, failure to meet dimensional accuracy standards, and in severe cases, even damage to the tool or workpiece.

[0005] Existing machining worktables rely on their own structural rigidity and weight to resist vibration. However, for complex frequency vibrations generated during machining, especially high-frequency vibrations, this passive resistance method is difficult to effectively absorb and dissipate vibration energy. The vibration will still be transmitted along the rigid structural path, resulting in very limited vibration reduction and noise reduction effects.

[0006] Therefore, this utility model proposes a vibration-damping and noise-reducing machining workbench structure to address the shortcomings of the prior art. Utility Model Content

[0007] In view of the problem that existing anti-vibration and noise reduction machining worktable structures have difficulty in effectively absorbing and dissipating complex vibrations generated during machining due to rigid structural connections, thus affecting machining accuracy and stability, this utility model aims to provide an improved anti-vibration and noise reduction machining worktable structure that can effectively solve the above problems.

[0008] This utility model provides a vibration-damping and noise-reducing machining workbench structure, including a table surface, a base, a track, a damping mechanism disposed between the table surface and the base, and a fixing component slidably disposed in the T-shaped groove. The top of the table surface is provided with a T-shaped groove.

[0009] The damping mechanism includes a honeycomb panel and multiple damping blocks fixed inside the honeycomb panel. The platform is fixedly connected to the top of the honeycomb panel, and the honeycomb panel is fixedly connected to the top of the base. This combination of flexible energy-absorbing components and rigid support frame forms the basis for suppressing vibration transmission at the system level.

[0010] The fixing component includes an I-shaped block that can be slidably accommodated in the T-shaped groove. An expansion block is provided inside the I-shaped block, and a second screw is threaded onto the expansion block. An elastic block is fixedly connected to one end of the I-shaped block, and the elastic block is positioned toward the center line of the T-shaped groove. This method of locking by expansion and abutting with an elastic element achieves localized and precise stabilization of the vibration source, namely the machining fixture.

[0011] Preferably, the honeycomb panel is fixed to the base by a first screw, and a first washer is fitted onto the first screw and pressed between the honeycomb panel and the base. This method of increasing the fixed contact area by using a washer ensures the tightness and stability of the connection between the shock absorption mechanism and the base.

[0012] Preferably, the tabletop is fixed to the honeycomb panel by a third screw, and a second washer is fitted onto the third screw and pressed between the tabletop and the honeycomb panel. Similarly, the use of the second washer ensures a firm and reliable connection between the tabletop and the damping mechanism, avoiding secondary vibrations caused by loose connections.

[0013] Preferably, the bottom of the T-shaped groove is provided with a groove extending along the length direction. The groove provides a structural space for collecting and guiding waste during subsequent cleaning operations, which is the structural basis for achieving efficient dust removal.

[0014] Preferably, the vibration-damping and noise-reducing machining workbench structure further includes a dust removal mechanism. The dust removal mechanism includes a connecting block that slides with the T-slot. A dead corner brush is fixedly connected to the bottom of the connecting block, and a scraper that slides with the groove is also fixedly connected. A handle is fixedly connected to the top of the connecting block. By integrating cleaning, scraping, collection and guidance functions into one unit, a highly efficient manual tool specifically for cleaning T-slots is formed.

[0015] This utility model has the following beneficial effects: 1. This utility model solves the problem of machining accuracy being affected by structural vibration and fixture shaking during operation of the machining worktable in the prior art by setting a damping mechanism composed of honeycomb panels and internal damping blocks between the worktable and the base, and setting an expandable and lockable fixing component in the T-slot to support the fixture. It achieves the effect of combining systematic vibration reduction and local vibration suppression, and improves the stability and machining accuracy of the machining process.

[0016] 2. This utility model solves the problem in the prior art that the dead corners of the T-slot are difficult to clean and that residual waste affects the installation accuracy of subsequent fixtures by opening a groove at the bottom of the T-slot for collecting waste, and using a special dust removal mechanism that integrates a dead corner brush and a scraper. It can quickly and thoroughly clean the T-slot, ensure the cleanliness of the workbench, and improve the efficiency and accuracy of subsequent clamping. Attached Figure Description

[0017] Figure 1 This is a perspective view of a vibration-damping and noise-reducing machining workbench structure proposed in this utility model; Figure 2 This is a cross-sectional view of the table surface of a vibration-damping and noise-reducing machining workbench structure proposed in this utility model. Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the connecting block of a machine workbench structure for vibration reduction and noise reduction proposed in this utility model.

[0018] Legend: 1. Countertop; 2. Base; 3. Track; 4. Vibration damping mechanism; 401. Honeycomb panel; 402. Damping block; 403. First washer; 404. First screw; 405. Fixing component; 4051. I-shaped block; 4052. Expansion block; 4053. Second screw; 4054. Elastic block; 406. Third screw; 407. Second washer; 5. T-slot; 6. Dust removal mechanism; 601. Groove; 602. Handle; 603. Dead corner brush; 604. Connecting block; 605. Scraper. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0020] Example: Please refer to Figures 1 to 4 This utility model provides a vibration-damping and noise-reducing machining workbench structure, which aims to solve the technical problems in the prior art where structural vibration during machining affects machining accuracy, and the dead corners of the machining back surface 1 and T-slot 5 are difficult to clean, thus affecting the subsequent fixture installation accuracy.

[0021] Please refer to Figure 1 and Figure 2 A vibration-damping and noise-reducing machining workbench structure includes a track 3 at the bottom, a base 2 slidably connected along the length of the track 3, and a table surface 1 fixed above the base 2. The track 3 is made of high-strength steel, and its upper surface has a precision guide surface for guiding the base 2, providing a reference for the linear movement of the entire workbench. The base 2 serves as a load-bearing base and is made of cast iron or welded steel structure to ensure high rigidity and stability. The table surface 1 serves as a direct platform for machining operations, and its top surface is precision ground to ensure extremely high flatness, used to support and install various machining fixtures through T-slots 5.

[0022] Please refer to Figure 1 , Figure 2 and Figure 3 A damping mechanism 4 is provided between the bottom of the table 1 and the top of the base 2. The damping mechanism 4 is used to isolate and absorb high-frequency vibrations generated by cutting forces, spindle rotation, and other factors during machining, preventing vibrations from affecting machining accuracy. The damping mechanism 4 includes a honeycomb plate 401 and multiple damping blocks 402 filled inside the honeycomb plate 401. The honeycomb plate 401 is a composite material with a sandwich structure, with high-strength aluminum alloy or steel panels on the top and bottom, and a honeycomb core composed of a large number of tightly arranged hexagonal units in the middle. This structure gives the honeycomb plate 401 extremely high specific stiffness and specific strength, enabling the honeycomb plate 401 to withstand the table's high load. The damping block 402 is not easily deformed when the surface 1 and the workpiece weight are present, and it can effectively disperse stress. The damping block 402 is made of viscoelastic polymer materials such as high-damping butyl rubber or polyurethane. Each damping block 402 is precisely cut and tightly filled in a hexagonal honeycomb cell of the honeycomb plate 401. When the vibration wave is transmitted to the honeycomb plate 401 through the platform 1, the small deformation of the honeycomb plate 401 will cause the filled damping block 402 to undergo shear deformation. The molecular chains inside the viscoelastic material of the damping block 402 undergo intense friction and movement, thereby efficiently converting the mechanical vibration energy into low-level heat energy and dissipating it, thus achieving vibration attenuation.

[0023] Please refer to Figure 2 and Figure 3The honeycomb panel 401 is firmly fixed to the top of the base 2 after passing through the panel body with multiple first screws 404. To prevent stress concentration and increase the contact area, each first screw 404 is also fitted with a first washer 403. The first washer 403 is pressed between the bottom surface of the honeycomb panel 401 and the top surface of the base 2. Similarly, the tabletop 1 is firmly fixed to the top of the honeycomb panel 401 after passing through the panel body with multiple third screws 406. Each third screw 406 is also fitted with a second washer 407. The second washer 407 is pressed between the bottom surface of the tabletop 1 and the top surface of the honeycomb panel 401. This double bolt and washer fixing method ensures that the connection from the tabletop 1 to the honeycomb panel 401 and then to the base 2 becomes a high-rigidity whole with vibration damping characteristics.

[0024] Please refer to Figure 1 and Figure 2 Inside the T-slot 5 formed on the top surface of the table 1, a slidably mounted fixing component 405 is provided. The T-slot 5 has a standard inverted T-shaped cross-section for mounting universal fixtures. The function of the fixing component 405 is to pre-tighten and support the lateral side after the fixture is installed, so as to eliminate potential installation gaps and suppress vibrations during processing. The main body of the fixing component 405 is an I-shaped block 4051. Inside the I-shaped block 4051, there is an expansion block 4052 with a tapered inner hole. A second screw 4053 is threaded onto the expansion block 4052. The head of the second screw 4053 is exposed at one end of the I-shaped block 4051 for easy tool operation. When the second screw 4053 is tightened, the tapered end of the rod moves axially relative to the inclined surface of the expansion block 4052, producing a wedge effect. The expansion block 4052 is forced to expand radially or laterally, thereby pressing tightly against the inner wall of the T-slot 5 with a huge positive pressure, realizing the reliable self-locking of the I-shaped block 4051 in any position. At the end of the I-shaped block 4051 away from the second screw 4053, an elastic block 4054 made of high elastic polyurethane material is also fixedly connected. The elastic block 4054 is set towards the center line of the T-slot 5. In use, the I-shaped block 4051 is first slid to the side of the fixture to be fixed, so that the elastic block 4054 is slightly compressed and pressed against the fixture. Then the second screw 4053 is tightened to lock the I-shaped block 4051. In this way, the elastic block 4054 can apply a continuous preload to the fixture, effectively absorbing high-frequency micro vibrations and compensating for the existence of micro gaps, greatly improving the clamping rigidity of the fixture.

[0025] Please refer to Figure 2 and Figure 4The vibration-damping and noise-reducing machining workbench structure also includes a dust removal mechanism 6. To cooperate with the work of the dust removal mechanism 6, a groove 601 with a semi-circular cross-section is provided on the center surface of the bottom of the T-shaped groove 5 along the length direction. The groove 601 plays the role of a waste collection channel during the cleaning process, and collects the metal shavings, dust and other waste materials swept down from various parts of the inner wall of the T-shaped groove 5.

[0026] Please refer to Figure 4 The dust removal mechanism 6 also includes a connecting block 604. The top of the connecting block 604 is integrally formed or fixedly connected to an ergonomically designed handle 602, which allows the user to grip firmly and apply pushing and pulling force. The bottom of the connecting block 604 integrates two key functional components: a corner brush 603 and a scraper 605. The corner brush 603 is constructed from wear-resistant, rigid nylon or polypropylene bristles embedded in a base. Its overall outer contour is precisely designed to match the cross-sectional contour of the T-shaped groove 5. When the dust removal mechanism 6 moves within the T-shaped groove 5, the bristles on the corner brush 603 can closely adhere to and sweep across the inner surface of the T-shaped groove 5, especially in corners that are difficult to reach with traditional cleaning methods, effectively peeling off and agitating attached oil and metal debris. The scraper 605 is fixed to the other side of the bottom of the connecting block 604, and is made of a polymer or copper alloy with moderate hardness that does not easily damage the surface of the T-shaped groove 5. The cross-sectional shape and size of the scraper 605 match the T-shaped groove. The groove 601 at the bottom of the T-shaped groove 5 slides precisely, creating a tiny movement gap between them. When the dust removal mechanism 6 moves along the T-shaped groove 5, the scraper 605 acts like a piston or scraper, pushing all the debris that falls into the groove 601 forward without any omissions, and finally scraping the debris completely out of one end of the T-shaped groove 5. In actual cleaning operations, the user holds the handle 602 and inserts the connecting block 604 of the dust removal mechanism 6 into the open end of the T-shaped groove 5. At this time, the corner brush 603 and the T-shaped groove... 5. The inner wall contacts the scraper 605, which is then embedded in the groove 601. Subsequently, the user pushes the dust removal mechanism 6 from one end to the other along the length of the T-shaped groove 5. In this single linear motion, the corner brush 603 completes the cleaning of all the inner wall corners. The swept debris falls into the groove 601 below under the action of gravity, and then the scraper 605 immediately collects and pushes out all the debris in the groove 601, thus completing the entire cleaning process of sweeping, collecting, and removing in one go.

[0027] As a preferred embodiment, in order to enhance the cleaning effect of the dust removal mechanism 6, especially when dealing with a large amount of fine dust or oily cutting fluid mixture, an auxiliary fluid cleaning function can be added to the dust removal mechanism 6. Specifically, a hollow fluid channel can be designed inside the handle 602 or the connecting block 604, and an external interface can be provided for connecting a compressed air pipeline or a high-pressure cleaning fluid pipeline. The outlet nozzle of the fluid channel can be arranged near the dead corner brush 603. While sliding and cleaning, high-pressure gas or cleaning fluid is sprayed into the T-shaped groove 5, and the stubborn stains are peeled off by the action of fluid flushing, so as to achieve the synergistic cleaning of air blowing / rinsing and physical brushing.

[0028] As another preferred embodiment, there are also various options for the material and form of the damping block 402. In addition to solid viscoelastic polymer blocks, sealed micro hydraulic dampers or pneumatic damper units can also be used, and the damping blocks 402 can be arranged in an array within the honeycomb units of the honeycomb plate 401. This active or semi-active damper can provide an adjustable damping coefficient to adapt to the vibration frequency and amplitude under different processing techniques, thereby achieving a more optimized dynamic vibration reduction effect.

[0029] Working principle: During the dynamic process of machining, the cutting force from the contact point between the tool and the workpiece will cause vibration of the entire system. This solution suppresses this vibration through a two-stage synergistic anti-vibration design. The first stage is to suppress the source of the vibration at the fixture. After the fixture is installed, the fixing component 405 is slid along the T-slot 5 to the side of the fixture, so that the elastic block 4054 pre-presses the fixture. Then, the second screw 4053 is operated to drive the expansion block 4052 to expand and firmly lock the I-shaped block 4051 in the T-slot 5. This combination of rigid locking and elastic support greatly improves the clamping rigidity of the fixture and effectively prevents relative vibration caused by the fixture due to installation gap or insufficient rigidity. The second stage is a systematic vibration reduction for the entire table 1. The residual vibration energy transmitted from the fixture and table 1 will be further transmitted to the damping mechanism 4 below. When the vibration wave passes through the honeycomb panel 401, the damping block 402 filled in the honeycomb core will undergo forced shear deformation. The long chain structure inside the polymer material rubs and moves against each other, irreversibly converting the macroscopic mechanical vibration energy into microscopic heat energy, and finally dissipating it into the surrounding environment. Through the coordinated work of multiple damping units distributed under the entire table 1, the efficient absorption and dissipation of broadband vibration energy is achieved, thereby ensuring the high stability of the table 1 and providing a solid physical basis for achieving high-precision processing. After the processing task is completed, when the work surface 1 needs to be cleaned and maintained, the user holds the dust removal mechanism 6 and inserts the working end into one end of the T-shaped groove 5. The user pushes the T-shaped groove 5 at a constant speed to the other end. During this pushing action, the specially shaped bristles of the corner brush 603 will thoroughly clean the inner wall surface of the T-shaped groove 5, especially the corners at the top and bottom, and peel off the adhering metal shavings and dirt. These peeled-off wastes fall naturally into the special waste collection channel at the bottom of the T-shaped groove 5, namely the groove 601, under the action of gravity. Then, the scraper 605, whose cross-section is perfectly matched with the groove 601, acts like a cleaner during the forward movement, pushing all the wastes accumulated in the groove 601 forward in one go without any residue, and finally pushing them all out of the end of the T-shaped groove 5. The whole process is completed in one go, achieving fast, efficient and deep cleaning of the T-shaped groove 5.

Claims

1. A vibration-damping and noise-reducing machining worktable structure, comprising: The table (1), the base (2) and the track (3) are provided. The top surface of the table (1) is provided with a T-shaped groove (5), and the base (2) is slidably mounted on the track (3). The workbench is characterized by further comprising a damping mechanism (4) disposed between the bottom of the tabletop (1) and the top of the base (2) and a fixing component (405) slidably disposed in the T-groove (5). The damping mechanism (4) comprises a honeycomb plate (401) and a plurality of damping blocks (402) fixed inside the honeycomb plate (401). The tabletop (1) is fixedly connected to the top of the honeycomb plate (401), and the honeycomb plate (401) is fixedly connected to the top of the base (2). The fixing component (405) comprises an I-shaped block (4051) slidably accommodated in the T-groove (5). An expansion block (4052) is provided inside the I-shaped block (4051). A second screw (4053) is threadedly connected to the expansion block (4052). An elastic block (4054) is fixedly connected to one end of the I-shaped block (4051). The elastic block (4054) is disposed facing the center line of the T-groove (5).

2. The vibration-damping and noise-reducing machining workbench structure according to claim 1, characterized in that, The honeycomb panel (401) is fixed to the base (2) by a first screw (404), and a first washer (403) is fitted onto the first screw (404) and pressed between the honeycomb panel (401) and the base (2).

3. The vibration-damping and noise-reducing machining workbench structure according to claim 1 or 2, characterized in that, The tabletop (1) is fixed to the honeycomb panel (401) by a third screw (406), and a second washer (407) is fitted onto the third screw (406) and pressed between the tabletop (1) and the honeycomb panel (401).

4. The vibration-damping and noise-reducing machining workbench structure according to claim 1, characterized in that, The bottom of the T-shaped groove (5) is provided with a groove (601) extending along the length direction.

5. The vibration-damping and noise-reducing machining workbench structure according to claim 4, characterized in that, The workbench also includes a dust removal mechanism (6).

6. The vibration-damping and noise-reducing machining workbench structure according to claim 5, characterized in that, The dust removal mechanism (6) includes a connecting block (604) that slides with the T-groove (5).

7. The vibration-damping and noise-reducing machining workbench structure according to claim 6, characterized in that, The bottom of the connecting block (604) is fixedly connected to a dead angle brush (603), and is also fixedly connected to a scraper (605) that slides in cooperation with the groove (601).

8. The vibration-damping and noise-reducing machining workbench structure according to claim 7, characterized in that, A handle (602) is fixedly connected to the top of the connecting block (604).

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