Precise grinding device for upper cover of power amplifier

Abstract

The utility model relates to the technical field of polishing, in particular to a power amplifier upper cover precise polishing device which comprises a workbench, four supporting columns are fixedly connected to the lower surface of the workbench, a machine base is fixedly connected to one side of the workbench, a polishing machine is slidably connected to one side of the machine base, and a fixing device is arranged on the upper surface of the workbench. The fixing device comprises a sliding groove, baffles are fixedly connected to the two ends of the sliding groove, first screws are rotationally connected to the ends, close to each other, of the two baffles, and nuts are fixedly connected to one ends of the first screws. The machine cover polishing device solves the problems that in the existing polishing process, an operator carries out handheld polishing on a workpiece or uses some clamping and fixing devices with fixed sizes, adjustment cannot be carried out according to different length and width sizes of a machine cover, the clamping and fixing devices need to be continuously replaced, and therefore the labor cost of work is increased, and the working efficiency is improved. And the efficiency of grinding work is reduced.

Description

Technical Field

[0001] This utility model relates to the field of power amplifier cover polishing technology, and in particular to a precision polishing device for power amplifier covers. Background Technology

[0002] Grinding equipment is a type of mechanical equipment used to grind, polish, or deburr the surface of workpieces. It is widely used in manufacturing, automotive, furniture processing, aerospace and other fields. Its core objective is to improve the surface quality and precision of workpieces through mechanical or automated means. Its main components include: power system, grinding unit, clamping device, etc.

[0003] Existing technologies, such as the utility model with publication number CN220463409U, disclose a grinding device for processing machine tool protective covers. This utility model relates to the field of CNC machine tool technology, specifically to a grinding device for processing machine tool protective covers. It includes a base plate, with side plates on both the left and right sides of the top of the base plate. A hydraulic telescopic rod is detachably mounted on the inner wall of each side plate. The inner drive end of the hydraulic telescopic rod is fixedly connected to a support plate via a baffle. Rollers are located at the four corners of the bottom of the support plate. A motor is mounted on the top of the left side of the support plate, and a gear is locked to the output end of the motor via a coupling. A vertical plate is mounted on the top of the support plate, and a rotating rod is rotatably connected to the inner wall of the vertical plate via a bearing. A circular rotating plate is mounted on the inner end of the rotating rod, and a gear ring is interference-fitted to the outer circumference of the circular rotating plate. This utility model uses mechanical workpiece flipping to replace manual operation, saving manpower and resources, reducing human intervention, improving the automation capability of the grinding machine, and better meeting actual production and processing needs.

[0004] The following defects were found in response to the above: In the polishing of the power amplifier cover, the existing technology usually uses a polishing device to polish the surface of the cover. However, in the existing polishing process, the operator polishes the workpiece by hand or uses some fixed-size clamping and fixing devices, which cannot be adjusted according to the different length and width dimensions of the cover. The clamping and fixing devices need to be constantly replaced, which increases the labor cost and reduces the efficiency of the polishing work. Utility Model Content

[0005] The purpose of this utility model is to solve the shortcomings of the existing technology, which is that in the existing grinding process, the operator grinds the workpiece by hand or uses some fixed-size clamping and fixing devices, which cannot be adjusted according to the different length and width dimensions of the machine cover, and the clamping and fixing devices need to be constantly replaced, thus increasing the labor cost and reducing the efficiency of grinding work. Therefore, a precision grinding device for the power amplifier cover is proposed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a precision grinding device for an amplifier cover, comprising a worktable, four support columns fixedly connected to the lower surface of the worktable, a base fixedly connected to one side of the worktable, a grinding machine slidably connected to one side of the base, a fixing device provided on the upper surface of the worktable, the fixing device comprising a slide groove, baffles fixedly connected to both ends of the slide groove, a first screw rotatably connected to the end of the two baffles that are close to each other, a nut fixedly connected to one end of the first screw, two sliders slidably connected to the inner wall of the slide groove, both sliders being threadedly connected to the first screw, a placement platform fixedly connected to the inner wall of the slide groove, the placement platform being rotatably connected to the first screw, a clamping plate fixedly connected to the upper surface of the sliders, two fixing grooves formed on the upper surface of the clamping plate, sliding plates slidably connected to the inner walls of the two fixing grooves, the same second screw rotatably connected to the inner walls of the two fixing grooves, a knob fixedly connected to one end of the second screw, and both sliding plates being threadedly connected to the second screw.

[0007] The aforementioned components achieve the following effects: they can clamp and fix the machine cover from both the left and right sides, and can also fix the machine cover from both the front and rear sides simultaneously, thereby preventing the machine cover from moving around during grinding and causing a decrease in grinding accuracy.

[0008] Preferably, three handles are fixedly connected to the side of the nut, and the ends of the three handles away from the nut are all semi-circular.

[0009] The effect achieved by the above-mentioned components is that the first screw can be rotated using three levers, making the operation of rotating the first screw simpler and more convenient.

[0010] Preferably, the knob has four arc grooves on its arc surface, and the four arc grooves are evenly distributed on the arc surface of the knob.

[0011] The effect achieved by the above-mentioned components is that when the operator uses the knob to turn the second screw, he can put his finger into the arc groove, making it easier to apply force.

[0012] Preferably, a plurality of rubber strips are fixedly connected to the sides of the two clamping plates that are close to each other, and the plurality of rubber strips are evenly distributed on the surface of the clamping plates.

[0013] The effect achieved by the above components is that when the clamping plate is used to clamp and fix the machine cover, the rubber strip can increase the friction between the clamping plate and the machine cover, thus making the fixing effect better.

[0014] Preferably, the upper surface of the workbench is provided with a protective device, which includes a rectangular groove on one side of the workbench. Limiting blocks are fixedly connected to both ends of the rectangular groove. A sliding rod is fixedly connected to the side of the two limiting blocks that are close to each other. Two connecting blocks are slidably connected to the inner wall of the rectangular groove, and both connecting blocks are slidably connected to the sliding rod. An acrylic plate is fixedly connected to the upper surface of the connecting blocks. The acrylic plate is L-shaped, and elliptical holes are provided at both the long and short arms of the acrylic plate. Round rods are slidably connected to the inner walls of the elliptical holes. One end of the two round rods is fixedly connected to the same first L-shaped plate, and the other end of the two round rods is fixedly connected to the same second L-shaped plate. A scraper is fixedly connected to the side of the first L-shaped plate near the acrylic plate, and the scraper is slidably connected to the acrylic plate.

[0015] The above-mentioned components achieve the following effects: they prevent operators from being injured by metal shavings during the polishing process by using two acrylic plates, allow the polishing progress to be observed through the acrylic plates, and enable the scraper to clean the inside of the acrylic plates.

[0016] Preferably, a handle is fixedly connected to the side of the second L-shaped plate away from the acrylic plate, and the cross-section of the handle is U-shaped.

[0017] The effect achieved by the above components is that the second L-shaped plate and scraper can be pulled by the handle, making the operation simpler and more convenient for the operator.

[0018] Preferably, an extension plate is fixedly connected to the upper surface of the acrylic sheet, a magnetic strip is fixedly connected to the lower surface of the extension plate, and the second L-shaped plate is an iron plate.

[0019] The aforementioned components achieve the following effect: they utilize magnetic strips to attract the second L-shaped plate, temporarily storing and fixing the scraper and the first L-shaped plate.

[0020] In summary, the beneficial effects of this utility model are as follows:

[0021] In this invention, a fixing device is installed to clamp and secure the amplifier cover during grinding, preventing accidental injury to the operator who might be holding the cover while grinding. The specific operating steps of the fixing device are as follows: Before grinding, the cover is placed on the platform in the center of the worktable. After placement, the first screw can be rotated using the three levers located on the side of the nut. This simplifies the operation. Simultaneously, the two sliders connected to the first screw slide towards each other in the groove. As the sliders move towards each other, they also move the two clamping plates in the same direction until they contact and slightly press against the left and right sides of the cover, at which point the rotation of the first screw can be stopped. After clamping the left and right sides of the machine cover using two clamping plates, the two sliding plates can be slid closer together by rotating the second screw located in the fixing groove at the upper end of the clamping plates. The second screw is rotated using a knob located at one end. The arc groove on the knob's curved surface makes it easier for the operator to rotate the second screw. When the second screw is rotated, it causes the two sliding plates to move closer together in the fixing groove, clamping and fixing the machine cover from both the front and back sides. This fixation device simultaneously secures the machine cover from all sides, preventing it from slipping during grinding and reducing grinding accuracy. The rubber strips on the clamping plates increase the friction between the clamping plates and the machine cover, further enhancing the clamping and fixing effect.

[0022] In this invention, by incorporating a protective device, during the polishing of the machine cover, metal shavings are generated everywhere due to the polishing discs polishing the surface of the cover. These shavings are at high temperatures and often cause injuries such as splashes to operators. The protective device uses two acrylic plates to enclose the machine cover and fixing device, allowing the polishing process to take place in the center. The metal shavings generated during polishing are blocked by the two acrylic plates, preventing operators from being injured by splashes. Furthermore, the operator can observe the polishing process through the acrylic plates to confirm the degree of completion. The scraper can clean the surface of the acrylic sheet in a timely manner, ensuring the cleanliness of the inner side of the acrylic sheet. The specific operating steps of the protective device are as follows: After the operator uses the fixing device to fix the machine cover on the placement table, the two acrylic sheets can be pushed towards each other along the sliding rod in the rectangular groove. When the two acrylic sheets surround the machine cover and the fixing device, the pushing of the acrylic sheets can be stopped, and the grinding work can then begin. During the grinding process, the operator can observe the grinding process through the acrylic sheets to confirm the progress of the grinding work. During the polishing process, the flying metal shavings become molten due to the polishing process. They will splash onto the inside of the acrylic sheet and adhere to the surface of the acrylic sheet, affecting the clarity of the acrylic sheet. At this time, the second L-shaped plate can be removed from the magnetic strip using the handle. Then, the second L-shaped plate is slid up and down along the oval hole in the acrylic sheet. In this process, the second L-shaped plate will drive the first L-shaped plate and the scraper to slide up and down along the surface of the acrylic sheet, thereby achieving the effect of cleaning the inside of the acrylic sheet with the scraper. Using the handle to pull the second L-shaped plate makes the operation simpler and less strenuous, while the magnetic strip located under the extension plate temporarily stores and fixes the second L-shaped plate. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a three-dimensional structural diagram of the fixing device of this utility model;

[0025] Figure 3 This utility model Figure 2 Enlarged view of point A;

[0026] Figure 4 This is a three-dimensional structural diagram of the protective device of this utility model;

[0027] Figure 5 This utility model Figure 4 Enlarged view of point B.

[0028] Legend: 1. Support column; 2. Workbench; 3. Machine base; 4. Grinding machine; 5. Fixing device; 501. Slide groove; 502. Baffle; 503. First screw; 504. Nut; 505. Handle; 506. Placement platform; 507. Slider; 508. Clamping plate; 509. Fixing groove; 510. Slide plate; 511. Second screw; 512. Knob; 513. Arc groove; 514. Rubber strip; 6. Protective device; 601. Rectangular groove; 602. Limiting block; 603. Slide rod; 604. Connecting block; 605. Acrylic plate; 606. Elliptical hole; 607. Round rod; 608. First L-shaped plate; 609. Scraper; 610. Second L-shaped plate; 611. Handle; 612. Extension plate; 613. Magnetic strip. Detailed Implementation

[0029] Reference Figure 1 As shown, this utility model provides a technical solution: a precision polishing device for an amplifier cover, including a worktable 2, four support columns 1 fixedly connected to the lower surface of the worktable 2, a base 3 fixedly connected to one side of the worktable 2, a polishing machine 4 slidably connected to one side of the base 3, a fixing device 5 provided on the upper surface of the worktable 2, and a protective device 6 provided on the upper surface of the worktable 2.

[0030] The following section will describe in detail the specific setup and function of its fixing device 5 and protective device 6.

[0031] Reference Figure 2 and Figure 3As shown in this embodiment: the fixing device 5 includes a slide 501, with baffles 502 fixedly connected to both ends of the slide 501. A first screw 503 is rotatably connected to one end of the two baffles 502 that is close to each other. A nut 504 is fixedly connected to one end of the first screw 503. Two sliders 507 are slidably connected to the inner wall of the slide 501. Both sliders 507 are threadedly connected to the first screw 503. A placement platform 506 is fixedly connected to the inner wall of the slide 501. The placement platform 506 is rotatably connected to the first screw 503. A clamping plate 508 is fixedly connected to the upper surface of the slider 507. Two fixing grooves 509 are formed on the upper surface of the clamping plate 508. A sliding plate 510 is slidably connected to the inner wall of both fixing grooves 509. The same second screw 511 is rotatably connected to the inner wall of both fixing grooves 509. A knob 512 is fixedly connected to one end of the second screw 511. Both sliding plates 510 are threadedly connected to the second screw 511. This design achieves the effect of clamping and fixing the machine cover from both sides, as well as simultaneously fixing it from both the front and rear sides, thus preventing the machine cover from moving around and causing a decrease in grinding precision during grinding. Three levers 505 are fixedly connected to the side of the nut 504, with each lever 505 having a semi-circular end away from the nut 504. This allows for easier and more convenient operation of rotating the first screw 503 using the three levers 505. Four arc-shaped grooves 513 are evenly distributed on the arc surface of the knob 512. This allows the operator to place their fingers in the arc-shaped grooves 513 when rotating the second screw 511 using the knob 512, making it easier to apply force. Several rubber strips 514 are fixedly connected to the sides of the two clamping plates 508 that are close to each other, and these rubber strips 514 are evenly distributed on the surface of the clamping plates 508. When the clamping plate 508 is used to clamp and fix the machine cover, the rubber strip 514 can increase the friction between the clamping plate 508 and the machine cover, thus achieving a better fixing effect.

[0032] Reference Figure 4 and Figure 5As shown in this embodiment: the protective device 6 includes a rectangular groove 601, which is formed on one side of the workbench 2. Limiting blocks 602 are fixedly connected to both ends of the rectangular groove 601. A sliding rod 603 is fixedly connected to the side of the two limiting blocks 602 that is close to each other. Two connecting blocks 604 are slidably connected to the inner wall of the rectangular groove 601. Both connecting blocks 604 are slidably connected to the sliding rod 603. An acrylic plate 605 is fixedly connected to the upper surface of the connecting blocks 604. Acrylic plate 605 is L-shaped. Both the long and short ends of the acrylic plate 605 have elliptical holes 606. Round rods 607 are slidably connected to the inner walls of the elliptical holes 606. One end of each round rod 607 is fixedly connected to the same first L-shaped plate 608, and the other end is fixedly connected to the same second L-shaped plate 610. A scraper 609 is fixedly connected to the side of the first L-shaped plate 608 closest to the acrylic plate 605, and the scraper 609 is slidably connected to the acrylic plate 605. This design achieves the effect of using two acrylic plates 605 to prevent operators from being injured by metal shavings during polishing, allowing observation of the polishing progress through the acrylic plates 605, and enabling cleaning of the inner side of the acrylic plate 605 using the scraper 609. A handle 611 is fixedly connected to the side of the second L-shaped plate 610 furthest from the acrylic plate 605. The handle 611 has a U-shaped cross-section. This design achieves the effect of making the operation of pulling the second L-shaped plate 610 and the scraper 609 simpler and more convenient for the operator. An extension plate 612 is fixedly connected to the upper surface of the acrylic plate 605, and a magnetic strip 613 is fixedly connected to the lower surface of the extension plate 612. The second L-shaped plate 610 is made of iron. The magnetic strip 613 is used to attract the second L-shaped plate 610, temporarily storing and fixing the scraper 609 and the first L-shaped plate 608.

[0033] Working principle: In this utility model, by setting a fixing device 5, the amplifier cover can be clamped and fixed during grinding, thus preventing the operator from being accidentally injured by the grinder 4 while holding the cover. The specific operation steps of the fixing device 5 are as follows: Before grinding the cover, the cover needs to be placed on the placement platform 506 located in the middle of the worktable 2. After placement, the first screw 503 can be rotated using the handles 505. Rotating the first screw 503 using the three handles 505 located on the side of the nut 504 makes the operation simpler and more convenient for the operator. While rotating the first screw 503, the two sliders 507 connected to the first screw 503 will slide towards each other in the groove 501 as the first screw 503 rotates. As the two sliders 507 move towards each other, they cause the two clamping plates 508 to move in the same direction along with the sliders 507. This continues until the two clamping plates 508 contact the left and right sides of the machine cover and are slightly pressed and secured. At this point, the rotation of the first screw 503 can be stopped. After clamping the left and right sides of the machine cover using the two clamping plates 508, the two sliding plates 510 can be slid towards each other by rotating the second screw 511 located in the fixing groove 509 at the upper end of the clamping plate 508. The second screw 511 is rotated using a knob 512 located at one end of the second screw 511. The arc groove 513 on the arc surface of the knob 512 makes it easier for the operator to rotate the second screw 511. When the second screw 511 is rotated, it drives the two slide plates 510 to move closer to each other in the fixing groove 509, clamping and fixing the machine cover from the front and rear sides. Thus, the fixing device 5 fixes the machine cover from the front, rear, left and right sides simultaneously, preventing the machine cover from sliding during grinding and thus reducing the grinding accuracy. The rubber strip 514 on the clamping plate 508 increases the friction between the clamping plate 508 and the machine cover, making the clamping and fixing effect better.

[0034] In this invention, by setting up the protective device 6, during the polishing of the machine cover, metal shavings are generated everywhere due to the polishing disc polishing the surface of the machine cover. These shavings are also very hot and often cause injuries such as splashes to the operator. However, by setting up the protective device 6, two acrylic plates 605 can be used to surround the machine cover and the fixing device 5, allowing the polishing process to take place in the middle. The metal shavings generated during polishing are blocked by the two acrylic plates 605, preventing the operator from being injured by splashes. The operator can also observe the polishing process through the acrylic plates 605 to confirm the degree of polishing completion. The scraper 609 can polish the acrylic... The surface of the acrylic sheet 605 is cleaned in a timely manner to ensure the cleanliness of the inside of the acrylic sheet 605. The specific operating steps of the protective device 6 are as follows: After the operator uses the fixing device 5 to fix the machine cover on the placement table 506, the two acrylic sheets 605 can be pushed towards each other along the sliding rod 603 in the rectangular groove 601. When the two acrylic sheets 605 surround the machine cover and the fixing device 5, the pushing of the acrylic sheets 605 can be stopped, and the polishing work can then begin. During the polishing process, the operator can observe the polishing process through the acrylic sheets 605 to confirm the progress of the polishing work. During the polishing process, the flying metal shavings become molten due to the polishing process. They will splash onto the inside of the acrylic plate 605 and adhere to its surface, affecting the clarity of the acrylic plate 605. At this time, the second L-shaped plate 610 can be removed from the magnetic strip 613 using the handle 611. Then, the second L-shaped plate 610 is slid up and down along the elliptical hole 606 on the acrylic plate 605. During this process, the second L-shaped plate 610 will also drive the first L-shaped plate 608 and the scraper 609 to slide up and down along the surface of the acrylic plate 605, thereby achieving the effect of cleaning the inside of the acrylic plate 605 using the scraper 609. Using the handle 611 to pull the second L-shaped plate 610 makes the operation simpler and less strenuous, while the magnetic strip 613 located under the extension plate 612 temporarily stores and fixes the second L-shaped plate 610.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection within a component, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A precision polishing device for power amplifier cover, characterized in that: The system includes a workbench (2), with four support columns (1) fixedly connected to the lower surface of the workbench (2). A base (3) is fixedly connected to one side of the workbench (2), and a grinder (4) is slidably connected to one side of the base (3). A fixing device (5) is provided on the upper surface of the workbench (2). The fixing device (5) includes a slide groove (501), with baffles (502) fixedly connected to both ends of the slide groove (501). A first screw (503) is rotatably connected to one end of the two baffles (502) that are close to each other. A nut (504) is fixedly connected to one end of the first screw (503). Two sliders (507) are slidably connected to the inner wall of the slide groove (501). 07) All are threadedly connected to the first screw (503). The inner wall of the slide groove (501) is fixedly connected to the placement platform (506). The placement platform (506) is rotatably connected to the first screw (503). The upper surface of the slider (507) is fixedly connected to the clamping plate (508). The upper surface of the clamping plate (508) has two fixing grooves (509). The inner walls of the two fixing grooves (509) are slidably connected to the sliding plate (510). The inner walls of the two fixing grooves (509) are rotatably connected to the same second screw (511). One end of the second screw (511) is fixedly connected to the knob (512). The two sliding plates (510) are threadedly connected to the second screw (511).

2. The precision polishing device for the power amplifier cover according to claim 1, characterized in that: Three handles (505) are fixedly connected to the side of the nut (504), and the ends of the three handles (505) away from the nut (504) are all semi-circular.

3. The precision polishing device for the power amplifier cover according to claim 1, characterized in that: The knob (512) has four arc grooves (513) on its arc surface, and the four arc grooves (513) are evenly distributed on the arc surface of the knob (512).

4. The precision polishing device for the power amplifier cover according to claim 1, characterized in that: Several rubber strips (514) are fixedly connected to the side of the two clamping plates (508) that are close to each other, and the several rubber strips (514) are evenly distributed on the surface of the clamping plates (508).

5. The precision polishing device for the power amplifier cover according to claim 1, characterized in that: The upper surface of the workbench (2) is provided with a protective device (6). The protective device (6) includes a rectangular groove (601). The rectangular groove (601) is opened on one side of the workbench (2). Limiting blocks (602) are fixedly connected to both ends of the rectangular groove (601). A sliding rod (603) is fixedly connected to the side of the two limiting blocks (602) that are close to each other. Two connecting blocks (604) are slidably connected to the inner wall of the rectangular groove (601). Both connecting blocks (604) are slidably connected to the sliding rod (603). An acrylic plate (605) is fixedly connected to the upper surface of the connecting block (604). The acrylic plate (605) is L-shaped. Both the long and short arms of the acrylic plate (605) are provided with elliptical holes (606). The inner wall of the elliptical holes (606) is slidably connected to round rods (607). One end of the two round rods (607) is fixedly connected to the same first L-shaped plate (608). The other end of the two round rods (607) is fixedly connected to the same second L-shaped plate (610). A scraper (609) is fixedly connected to the side of the first L-shaped plate (608) near the acrylic plate (605). The scraper (609) is slidably connected to the acrylic plate (605).

6. The precision polishing device for the power amplifier cover according to claim 5, characterized in that: A handle (611) is fixedly connected to the side of the second L-shaped plate (610) away from the acrylic plate (605), and the cross-section of the handle (611) is "U".

7. The precision polishing device for the power amplifier cover according to claim 5, characterized in that: An extension plate (612) is fixedly connected to the upper surface of the acrylic plate (605), and a magnetic strip (613) is fixedly connected to the lower surface of the extension plate (612). The second L-shaped plate (610) is an iron plate.

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