A low noise nozzle ring vibration lapping device

Abstract

The utility model relates to mechanical parts surface treatment equipment technical field especially a kind of low-noise nozzle ring vibration lapping device, including frame, spring pedestal, exciter, vibrating groove, the lapping device further includes sound insulation component;The sound insulation component includes sound insulation cylinder, upper cover and locking assembly that locking upper cover are fixedly installed on spring pedestal and located vibrating groove outside side, closedly cover in sound insulation cylinder top;The upper cover includes coaxially arranged outer tube, top cover and inner tube, the outer tube top end and inner tube top end are all fixedly connected in top cover lower end;The sound insulation cylinder is located the inside of outer tube;Inner tube is located the inside of vibrating groove;The top cover lower end and sound insulation cylinder upper end resist, by the utility model, working noise can be reduced, production environment is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of surface treatment equipment for mechanical parts, specifically to a low-noise nozzle ring vibration grinding device. Background Technology

[0002] In the manufacturing of high-end equipment such as aero-engines and gas turbines, nozzle rings, as key adjustment components, typically consist of a mounting plate, a drive plate (actuator plate), an adjusting linkage (fork), a back cover, and dozens of precision blades. These parts have burrs, flash, and dimensional deviations on their surfaces after casting or machining, requiring grinding for finishing. Due to the complex structure, large surface curvature, and high requirements for mass production, vibratory grinding technology, with its high processing efficiency and adaptability, has become the mainstream process for rough grinding of nozzle rings.

[0003] However, traditional vibratory grinding machines suffer from drawbacks such as noise and dust dispersion during operation. For example, the vibrator drives the grinding tank to generate high-frequency vibrations, causing continuous and intense collisions and friction between the grinding media (ceramic grinding blocks, alumina particles, etc.) and the metal workpiece, as well as between the workpiece and the tank wall. The broadband noise generated in this process (mainly concentrated in the 500-4000Hz range) can reach 85-100dB(A), far exceeding the limits of the "Industrial Enterprise Noise Hygiene Standard". Long-term exposure can easily lead to hearing damage and psychological fatigue for operators. In addition, the open grinding tank easily causes grinding dust to rise during vibration, polluting the workshop environment and failing to meet the requirements of modern green manufacturing. Utility Model Content

[0004] To overcome the problem of severe noise pollution in existing technologies, this utility model provides a low-noise nozzle ring vibration grinding device, which significantly reduces working noise and improves the production environment.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a low-noise nozzle ring vibration grinding device, comprising a frame, a spring base, a vibrator, and a vibration groove, wherein the grinding device further comprises a sound insulation component; the sound insulation component comprises a sound insulation cylinder fixedly mounted on the spring base and located outside the vibration groove, an upper cover that is closedly fitted to the top of the sound insulation cylinder, and a locking component for locking the upper cover; the upper cover comprises an outer cylinder, a top cover, and an inner cylinder arranged coaxially, wherein the top ends of the outer cylinder and the inner cylinder are both fixedly connected to the lower end of the top cover; the sound insulation cylinder is located inside the outer cylinder; the inner cylinder is located inside the vibration groove; and the lower end of the top cover abuts against the upper end of the sound insulation cylinder.

[0006] Preferably, the length of the inner cylinder is greater than the length of the outer cylinder.

[0007] Preferably, the soundproof cylinder includes a tubular body and an annular support fixed to the upper outer periphery of the body, the bottom end of the tubular body is fixed to the spring base by bolts; the lower end of the outer cylinder abuts against the upper surface of the support.

[0008] Preferably, the cylindrical wall of the tubular body has a hollow sandwich structure.

[0009] Preferably, the top cover further includes a tempered glass plate, wherein a groove is formed at the axial center of the bottom wall of the inner cylinder, and a through hole is formed at the center of the groove; the glass plate is fixedly disposed in the groove to close the through hole.

[0010] Preferably, the glass plate and the inner cylinder are bonded together.

[0011] Preferably, the locking assembly is provided in multiple parts; the locking assembly includes a fixed seat, a C-shaped connecting plate and a locking bolt; the fixed seat is fixedly disposed on the outer periphery of the outer cylinder; the upper end of the C-shaped connecting plate is hinged to the fixed seat; the screw of the locking bolt passes vertically through the lower end of the C-shaped connecting plate and is pressed against the lower end of the support.

[0012] Preferably, the plurality of locking components are evenly distributed around the outer periphery of the outer cylinder.

[0013] Preferably, the sound insulation component further includes an annular rubber pad, which is disposed on the upper surface of the spring base and located outside the vibration groove, and the bottom end of the sound insulation cylinder is pressed against the upper surface of the rubber pad.

[0014] Preferably, the rubber pad is made of nitrile rubber or neoprene rubber.

[0015] Compared with the prior art, the beneficial effects of this utility model are: through the sound insulation component with a fully enclosed hollow sandwich sound insulation cylinder and composite cover structure, the high-intensity noise generated during the grinding process is effectively isolated, which is expected to reduce the noise of the working environment, greatly improve the production environment, and meet occupational health standards; the sunken design of the inner cylinder of the cover extends into the working area, effectively suppressing the rising and dispersal of grinding dust and keeping the environment clean. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the grinding device of this utility model;

[0017] Figure 2 This is a schematic diagram of the grinding device of this utility model after the sound insulation component has been removed;

[0018] Figure 3 This is a schematic diagram of the upper cover structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the upper longitudinal section of the grinding device of this utility model;

[0020] Figure 5 For the present utility model Figure 1 A schematic diagram of the structure at point A in the middle.

[0021] In the diagram: 1. Frame, 2. Spring base, 3. Vibrator, 4. Sound insulation cylinder, 5. Top cover, 6. Locking assembly, 7. Vibration groove, 8. Rubber pad, 41. Support platform, 51. Outer cylinder, 52. Top cover, 53. Inner cylinder, 54. Glass plate, 55. Fixing seat, 531. Groove, 532. Through hole, 61. Connecting shaft, 62. C-shaped connecting plate, 63. Locking bolt. Detailed Implementation

[0022] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings, so that those skilled in the art can more clearly understand how to practice this utility model. Although this utility model has been described in conjunction with its preferred embodiments, these embodiments are merely illustrative and not intended to limit the scope of this utility model.

[0023] See Figure 1-5 In one embodiment of the present invention, a low-noise nozzle ring vibration grinding device includes: a grinding machine, and a high-efficiency sound insulation component that wraps around the grinding end of the grinding machine.

[0024] The grinding machine includes a frame 1, a spring base 2, a vibrator 3, and a vibration groove 7. The frame 1 is the basic support structure of the device. The spring base 2 is fixedly installed on the frame 1. The spring base 2 is mainly used to provide the elastic restoring force required for vibration and to transmit the excitation force. The vibrator 3, as a vibration source generator, is fixedly installed at the lower end of the spring base 2. When the vibrator 3 is working, it generates a periodic excitation force, which drives the entire vibration system through the spring base 2. The vibration groove 7 is a tubular working container, which is rigidly fixed to the upper end of the spring base 2 by bolts. The spring base 2 also closes the lower end of the vibration groove 7, forming a cavity to accommodate the grinding media and the workpiece. Under the drive of the vibrator 3, the vibration groove 7 and its contents generate controlled vibration, causing the grinding media and the nozzle ring parts to move relative to each other, achieving friction, collision, and tumbling, thereby achieving the effects of deburring, polishing, and grinding.

[0025] The sound insulation component completely encloses the noise-generating vibration groove 7 and the internal grinding process, forming a sealed sound insulation cavity, which significantly reduces noise leakage.

[0026] The sound insulation assembly includes a sound insulation cylinder 4, a top cover 5, and a locking assembly 6. The sound insulation cylinder 4 includes a sound insulation cylinder body and a support 41 fixedly sleeved on the upper outer periphery of the sound insulation cylinder body. The sound insulation cylinder body is a tubular structure that forms the side wall of the sound insulation cavity. The sound insulation cylinder body is fixed to the spring base 2 by bolts to ensure a stable connection with the main structure.

[0027] The upper cover 5 is fitted onto the top of the soundproof cylinder body via the locking component 6, thereby sealing the top of the soundproof cavity and integrating an observation function. The upper cover 5 includes an outer cylinder 51, a top cover 52, an inner cylinder 53, and a fixing base 55. The outer cylinder 51 is a tubular structure. The top cover 52 is an annular structure located at the top. The inner cylinder 53 is a tubular structure with its lower end closed, located inside the outer cylinder 51, and its top end and the top end of the outer cylinder 51 are both fixed to the lower end of the top cover 52. Furthermore, the inner cylinder 53 is longer than the outer cylinder 51, forming a sunken structure. After assembly, the lower end of the outer cylinder 51 abuts against the upper end of the support platform 41, and the lower end of the top cover 52 abuts against the upper end of the sound insulation cylinder body to form a double seal. The sound insulation cylinder body is located between the outer cylinder 51 and the inner cylinder 53, and the inner cylinder 53 is located inside the vibration groove 7. The advantage of this arrangement is that the sunken inner cylinder 53 extends deep into the working area of ​​the vibration groove, effectively limiting the upward flight and dispersion of dust generated during the grinding process, and improving the cleanliness of the working environment. The annular space between the inner cylinder 53 and the outer cylinder 51, together with the sound insulation cylinder 4, constitutes the main sound insulation barrier.

[0028] Two fixing seats 55 are provided. The two fixing seats 55 are symmetrically welded or bolted to the outer peripheral wall of the outer cylinder 51, serving as the mounting base for the upper cover locking mechanism.

[0029] The locking assembly 6 is used to quickly and reliably press and fix the upper cover 5 onto the support 41 of the sound insulation cylinder 4, ensuring the airtightness of the sound insulation cavity. Two sets of locking assemblies 6 are provided, corresponding to the fixing seats 55 of the upper cover.

[0030] The locking assembly 6 includes a connecting shaft 61, a C-shaped connecting plate 62, and a locking bolt 63. The upper end of the C-shaped connecting plate 62 is hinged to the fixed seat 55 via the connecting shaft 61. The lower end of the C-shaped connecting plate 62 is designed to extend downward and bend so that its end can extend to the bottom of the support platform 41. The locking bolt 63 is threaded vertically through the lower end of the C-shaped connecting plate 62 (the part located below the support platform). Rotating the locking bolt 63 can cause its screw end to press upward against the lower end face of the support platform 41, thereby generating a strong downward pressure and pressing the outer cylinder 51 of the upper cover 5 tightly onto the support platform 41 to achieve locking and sealing. This design facilitates quick opening and closing of the upper cover for loading and unloading.

[0031] In one embodiment, the upper cover 5 further includes a tempered glass plate 54. A groove 531 is formed at the axial center of the bottom wall of the inner cylinder 53, and a through hole 532 is formed at the center of the groove. The tempered glass plate 54 is sealed and fixed in the groove 531 with weather-resistant silicone, completely sealing the through hole 532 and forming a sealed observation window. The operator can directly observe the grinding state of the workpiece inside the vibration groove 7 through this window without opening the soundproof cavity.

[0032] In one embodiment, the sound insulation assembly further includes an annular rubber pad 8, which is disposed on the spring base 2 and outside the vibration groove 7. After assembly, the bottom end of the sound insulation cylinder 4 presses against this rubber pad 8. The advantages of this arrangement are: the rubber pad can absorb some of the vibration transmitted from the main body to the sound insulation cylinder, preventing hard contact from generating additional noise or affecting the stability of the sound insulation cylinder; it fills the gap between the bottom of the sound insulation cylinder 4 and the spring base 2, enhancing the sound insulation effect; and it increases the frictional damping of the contact surface, making the sound insulation cylinder installation more stable. In implementation, the rubber pad 8 should preferably be made of oil-resistant and aging-resistant nitrile rubber or neoprene rubber.

[0033] In one embodiment, to further improve sound insulation, the inner wall of the sound insulation cylinder 4 is designed as a hollow sandwich structure, and the sandwich can be filled with high-density sound-absorbing materials (such as mineral wool, polyester fiber cotton, etc.). By increasing the damping and mass in the sound wave propagation path, its sound insulation performance (especially the isolation of mid- and low-frequency noise) can be greatly improved.

[0034] This technical solution utilizes a fully enclosed soundproof cylinder and a sunken top cover, combined with a structural design that fills the hollow interlayer of the soundproof cylinder with sound-absorbing material, to form multiple sound wave reflection and absorption barriers. This effectively isolates the mid-to-high frequency noise generated during the grinding process, solving the noise pollution problem. The sunken extension design of the inner cylinder of the top cover forms a physical barrier covering the working area of ​​the vibration groove, inhibiting the upward movement and dispersion of grinding dust, reducing the concentration of suspended particulate matter in the workshop, and improving the cleanliness and safety of the working environment.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A low-noise nozzle ring vibration grinding device, comprising a frame (1), a spring base (2), a vibrator (3), and a vibration groove (7), characterized in that: The grinding device also includes a sound insulation component; the sound insulation component includes a sound insulation cylinder (4) fixedly installed on the spring base (2) and located outside the vibration groove (7), an upper cover (5) that is closedly covered on the top of the sound insulation cylinder (4), and a locking component (6) for locking the upper cover (5); the upper cover (5) includes an outer cylinder (51), a top cover (52) and an inner cylinder (53) arranged coaxially, the top of the outer cylinder (51) and the top of the inner cylinder (53) are both fixed to the lower end of the top cover (52); the sound insulation cylinder (4) is located inside the outer cylinder (51); the inner cylinder (53) is located inside the vibration groove (7); the lower end of the top cover (52) abuts against the upper end of the sound insulation cylinder (4).

2. The low-noise nozzle ring vibration grinding device according to claim 1, characterized in that: The length of the inner cylinder (53) is greater than the length of the outer cylinder (51).

3. The low-noise nozzle ring vibration grinding device according to claim 1, characterized in that: The soundproof cylinder (4) includes a tubular body and an annular support (41) fixed to the upper outer periphery of the body. The bottom end of the tubular body is fixed to the spring base (2) by bolts. The lower end of the outer cylinder (51) abuts against the upper surface of the support (41).

4. The low-noise nozzle ring vibration grinding device according to claim 3, characterized in that: The tubular body has a hollow sandwich structure in its cylindrical wall.

5. The low-noise nozzle ring vibration grinding device according to claim 1, characterized in that: The top cover (5) also includes a tempered glass plate (54). A groove is opened at the bottom wall axis of the inner cylinder (53), and a through hole is opened in the center of the groove. The glass plate (54) is fixed in the groove to close the through hole.

6. The low-noise nozzle ring vibration grinding device according to claim 5, characterized in that: The glass plate (54) and the inner cylinder (53) are bonded together.

7. The low-noise nozzle ring vibration grinding device according to claim 3, characterized in that: The locking assembly (6) is provided in multiple parts; the locking assembly (6) includes a fixed seat (55), a C-shaped connecting plate (62) and a locking bolt (63); the fixed seat (55) is fixedly disposed on the outer periphery of the outer cylinder (51); the upper end of the C-shaped connecting plate (62) is hinged to the fixed seat (55); the screw of the locking bolt (63) passes vertically through the lower end of the C-shaped connecting plate (62) and is pressed against the lower end of the support (41).

8. The low-noise nozzle ring vibration grinding device according to claim 7, characterized in that: Multiple locking components (6) are evenly distributed around the outer periphery of the outer cylinder (51).

9. The low-noise nozzle ring vibration grinding device according to claim 1, characterized in that: The sound insulation component also includes an annular rubber pad (8), which is located on the upper surface of the spring base (2) and outside the vibration groove (7). The bottom end of the sound insulation cylinder (4) is pressed against the upper surface of the rubber pad (8).

10. A low-noise nozzle ring vibration grinding device according to claim 9, characterized in that: The rubber pad (8) is made of nitrile rubber or chloroprene rubber.

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