Damping structure for precision grinding machine

Abstract

The utility model relates to the technical field of machining, in particular to a damping structure for a precision grinding machine, and solves the problem that a grinding wheel is damaged due to the fact that vibration in the left-right direction cannot be buffered and damped in the prior art. A damping structure for a precision grinding machine comprises a rack, a buffering table is fixedly installed at the top of the rack, a containing table is movably installed at the top of the buffering table, and a damping assembly suitable for the containing table is arranged in the buffering table; the damping assembly comprises a damping cavity, a damper, a supporting plate, a connecting shaft, a supporting strip, a supporting sleeve rod, a supporting rod, a buffering cavity, a sealing gasket, a first spiral spring and a second spiral spring. The shock absorber, the supporting rod, the buffering cavity, the sealing gasket, the first spiral spring and the second spiral spring are installed, the vertical shaking of the containing table can be buffered and damped, meanwhile, the left-right shaking of the containing table can be buffered and damped, and the service life of the grinding wheel is greatly prolonged.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and in particular to a vibration damping structure for a precision grinding machine. Background Technology

[0002] A precision grinding machine is a machine tool used for high-precision grinding of various workpieces. By using high-precision grinding wheels and precisely controlled grinding parameters, it can achieve extremely high levels of surface accuracy, dimensional accuracy, and shape accuracy of workpieces.

[0003] Chinese Patent Publication No. CN213136198U discloses a precision forming grinder with vibration damping function, comprising: a frame, with a support frame fixedly mounted at one end of the frame; and a grinding structure located at the bottom of the support frame, the grinding structure including a hydraulic cylinder, a support base, a grinding wheel, and a rotating motor, wherein the hydraulic cylinder is slidably mounted on the bottom of the support frame via a sliding groove. This utility model features telescopic support columns fixedly at equal intervals within a placement table, with compression springs sleeved around the outer periphery of each column. A placement plate is fixedly mounted on top of the telescopic support columns. When a workpiece is placed on the placement plate for grinding, the elasticity of the springs buffers most of the vibration, preventing damage to the grinding wheel due to vibration. Furthermore, a negative pressure fan generates suction to draw dust or debris generated during grinding into the feed pipe, where it falls into the dust collection chamber. This dust and debris are then collected through the discharge port, making it convenient to use.

[0004] Although the existing device can provide shock absorption and cushioning for the placement plate through telescopic support columns and compression springs, it cannot effectively absorb and cushion the shock when the placement plate is subjected to lateral vibrations, which will damage the grinding wheel. Utility Model Content

[0005] The purpose of this invention is to provide a vibration damping structure for precision grinding machines, which solves the problem that existing technologies cannot buffer and dampen vibrations in the left and right directions, thus causing damage to the grinding wheel.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A vibration damping structure for a precision grinding machine includes a frame, a buffer platform fixedly mounted on the top of the frame, a placement platform movably mounted on the top of the buffer platform, and a vibration damping assembly suitable for the placement platform inside the buffer platform. The vibration damping assembly includes a damping cavity, dampers, a support plate, a connecting shaft, support bars, support sleeves, a support rod, a buffer cavity, a sealing gasket, a first helical spring, and a second helical spring. The damping cavity is located on the top of the buffer platform. The dampers are fixedly mounted inside the damping cavity in a rectangular array. The support plate is fixedly mounted on the top of the dampers. The connecting shaft is rotatably connected to the top of the support plate. The support bars are symmetrically distributed and fixedly connected inside the damping cavity, located outside the dampers. The support sleeves are symmetrically distributed and rotatably connected to opposite sides of the support plates. The support rod is movably sleeved inside the support sleeve. The buffer cavity is located inside the support sleeve. The sealing gasket is fixedly mounted on the side surface of the support rod, located inside the buffer cavity. The first helical spring is fixedly connected to one end of the sealing gasket, and the second helical spring is fixedly connected to the other end of the sealing gasket.

[0008] Preferably, an L-shaped support frame is fixedly installed on the top of the frame, and a grinding structure is provided on the lower surface of the L-shaped support frame. The grinding structure includes a movable slide, an electric slider, an electric push rod, a mounting bracket, a grinding wheel, and a rotary motor. The movable slide is opened on the lower surface of the L-shaped support frame.

[0009] Preferably, the electric slider is slidably connected to the outside of the movable slide, the electric push rod is fixedly installed at the lower end of the electric slider, the mounting bracket is fixedly installed at the lower end of the telescopic end of the electric push rod, the grinding wheel is rotatably connected inside the mounting bracket, the rotary motor is fixedly installed on the back of the mounting bracket, and the transmission end of the rotary motor is connected to the grinding wheel drive.

[0010] Preferably, clamps are symmetrically and movably installed on the top of the placement platform. The top of the placement platform is provided with a movable component suitable for the clamps. The movable component includes a limiting slide groove, a two-way lead screw, a support slide groove, and a handle. The limiting slide groove is symmetrically distributed on the top of the placement platform. The two-way lead screw is rotatably connected to the inside of the placement platform and extends through the inside of the limiting slide groove. The support slide groove is symmetrically distributed on the top of the placement platform. The handle is rotatably connected to the side of the placement platform and is driven by the two-way lead screw. Protective pads are fixedly installed on opposite sides of the clamps.

[0011] Preferably, a negative pressure fan is fixedly installed on the left side of the L-shaped support frame, and a ash discharge port is opened on the right side of the frame, which is connected to the negative pressure fan.

[0012] Preferably, a control panel is fixedly installed on the front of the rack, and support columns are fixedly connected to the bottom of the rack in a rectangular array, with anti-slip pads fixedly installed on the bottom of the support columns.

[0013] This utility model has the following beneficial effects:

[0014] This invention, through the installation of a shock absorber, support rod, buffer chamber, sealing gasket, and helical springs one and two, can not only buffer and reduce the vertical swaying of the placement platform, but also buffer and reduce the horizontal swaying of the placement platform, greatly extending the service life of the grinding wheel.

[0015] This invention utilizes the rotation of a bidirectional lead screw to drive the relative movement of clamping plates on both sides, thereby enabling the clamping plates to clamp and fix the workpiece with the protective pad, preventing the workpiece from shaking during the grinding process and effectively improving the safety and stability of workpiece grinding. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional front view schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a three-dimensional structural diagram of the buffer platform component and the placement platform component of this utility model;

[0019] Figure 3 This is a three-dimensional structural diagram of the shock-absorbing cavity component and other components of this utility model;

[0020] Figure 4 This is a three-dimensional cross-sectional structural diagram of the support sleeve component and the support rod component of this utility model;

[0021] Figure 5 This is a schematic diagram of the overall three-dimensional side view of the present invention.

[0022] In the diagram: 1. Frame; 2. Buffer platform; 3. Placement platform; 4. L-shaped support frame; 5. Clamping plate; 6. Protective pad; 7. Negative pressure fan; 8. Ash discharge port; 9. Control panel; 10. Support column; 11. Anti-slip pad; 301. Vibration damping chamber; 302. Vibration damper; 303. Support plate; 304. Connecting shaft; 305. Support bar; 306. Support sleeve; 307. Support rod; 308. Buffer chamber; 309. Sealing gasket; 310. Helical spring one; 311. Helical spring two; 401. Moving slide; 402. Electric slider; 403. Electric push rod; 404. Mounting bracket; 405. Grinding wheel; 406. Rotary motor; 501. Limiting slide; 502. Two-way lead screw; 503. Support slide; 504. Handle. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0024] Reference Figure 1-5 A vibration damping structure for a precision grinding machine includes a frame 1. A buffer platform 2 is fixedly mounted on the top of the frame 1, and a placement platform 3 is movably mounted on the top of the buffer platform 2. The buffer platform 2 is internally equipped with a vibration damping assembly suitable for the placement platform 3. The vibration damping assembly includes a damping cavity 301, vibration dampers 302, a support plate 303, a connecting shaft 304, a support bar 305, a support sleeve 306, a support rod 307, a buffer cavity 308, a sealing gasket 309, a first helical spring 310, and a second helical spring 311. The damping cavity 301 is located on the top of the buffer platform 2. The vibration dampers 302 are fixedly mounted inside the damping cavity 301 in a rectangular array. The support plate 303 is fixedly mounted on the vibration dampers. At the top of 302, the connecting shaft 304 is rotatably connected to the top of the support plate 303. The support bars 305 are symmetrically distributed and fixedly connected inside the damping cavity 301 and located outside the damper 302. The support sleeve rods 306 are symmetrically distributed and rotatably connected to opposite sides of the support plates 303. The support rod 307 is movably sleeved inside the support sleeve rod 306. The buffer cavity 308 is opened inside the support sleeve rod 306. The sealing gasket 309 is fixedly installed on the side surface of the support rod 307 and located inside the buffer cavity 308. The first helical spring 310 is fixedly connected to one end of the sealing gasket 309, and the second helical spring 311 is fixedly connected to the other end of the sealing gasket 309.

[0025] The connecting shaft 304 connects the placement platform 3 and the support plate 303, while also allowing the placement platform 3 to rotate at a small angle. The sealing gasket 309 keeps the buffer cavity 308 in a semi-sealed state. The installation of the shock absorber 302 buffers and dampens the vertical force on the placement platform 3. The installation of the support sleeve 306, support rod 307, buffer cavity 308, sealing gasket 309, coil spring 1 310, and coil spring 2 311 buffers and dampens the lateral vibrations on the placement platform 3. The shock-absorbing components are designed to buffer and dampen vibrations when the placement platform 3 vibrates up and down. When the placement platform 3 vibrates left and right, it applies pressure to the support rod 307 on one side, causing the support rod 307 to slide inside the buffer cavity 308 of the support sleeve rod 306. During the movement of the support rod 307, the elasticity of the first helical spring 310 and the second helical spring 311, along with the friction of the sealing gasket 309, buffer and dampen the left and right vibrations of the placement platform 3. This invention, through the installation of the shock absorber 302, support rod 307, buffer cavity 308, sealing gasket 309, and helical springs 310 and 311, not only buffers and dampens the up-and-down swaying of the placement platform 3, but also buffers and dampens the left and right swaying, greatly extending the service life of the grinding wheel 405.

[0026] Furthermore, an L-shaped support frame 4 is fixedly installed on the top of the frame 1. A grinding structure is provided on the lower surface of the L-shaped support frame 4. The grinding structure includes a movable slide 401, an electric slider 402, an electric push rod 403, a mounting bracket 404, a grinding wheel 405, and a rotary motor 406. The movable slide 401 is opened on the lower surface of the L-shaped support frame 4.

[0027] The electric slider 402 is slidably connected to the outside of the movable slide 401. The electric push rod 403 is fixedly installed at the lower end of the electric slider 402. The mounting bracket 404 is fixedly installed at the lower end of the telescopic end of the electric push rod 403. The grinding wheel 405 is rotatably connected inside the mounting bracket 404. The rotary motor 406 is fixedly installed on the back of the mounting bracket 404. The transmission end of the rotary motor 406 is connected to the grinding wheel 405.

[0028] The installation of the grinding structure involves activating the electric slider 402, which drives the electric push rod 403 and the grinding wheel 405 to move within the movable slide groove 401, moving the grinding wheel 405 to a suitable position. Then, the rotary motor 406 is activated, causing the transmission end of the rotary motor 406 to rotate the grinding wheel 405, thereby grinding the surface of the workpiece. Finally, the electric push rod 403 can be activated, causing its telescopic end to descend, thereby adjusting the position of the grinding wheel 405.

[0029] Furthermore, clamping plates 5 are symmetrically distributed and movably installed on the top of the placement platform 3. The top of the placement platform 3 is provided with a moving component suitable for the clamping plates 5. The moving component includes a limiting slide 501, a bidirectional lead screw 502, a support slide 503, and a handle 504. The limiting slide 501 is symmetrically distributed and opened on the top of the placement platform 3. The bidirectional lead screw 502 is rotatably connected to the inside of the placement platform 3 and passes through the inside of the limiting slide 501. The support slide 503 is symmetrically distributed and opened on the top of the placement platform 3. The handle 504 is rotatably connected to the side of the placement platform 3 and is drivenly connected to the bidirectional lead screw 502. A protective pad 6 is fixedly installed on the opposite side of the clamping plates 5.

[0030] The bottom of the clamping plate 5 is adapted to the limiting slide groove 501 and the supporting slide groove 503 respectively, and is also threadedly connected to the bidirectional lead screw 502. The moving component is designed so that rotating the handle 504 causes the bidirectional lead screw 502 to rotate, which in turn causes the clamping plates 5 on both sides to move relative to each other. This relative movement of the clamping plates 5 then causes the protective pad 6 to clamp and fix the workpiece. This invention, through the rotation of the bidirectional lead screw 502, causes the clamping plates 5 on both sides to move relative to each other, thereby causing the clamping plates 5 to move the protective pad 6 to clamp and fix the workpiece, preventing the workpiece from shaking during grinding and effectively improving the safety and stability of workpiece grinding.

[0031] Furthermore, a negative pressure fan 7 is fixedly installed on the left side of the L-shaped support frame 4, and a ash discharge port 8 is opened on the right side of the frame 1, which is connected to the negative pressure fan 7.

[0032] A control panel 9 is fixedly installed on the front of the rack 1. Support columns 10 are fixedly connected in a rectangular array at the bottom of the rack 1. Anti-slip pads 11 are fixedly installed at the bottom of the support columns 10.

[0033] The installation of the negative pressure fan 7 is used to suck up the dust generated by the grinding wheel 405 and then discharge it to the outside through the dust discharge port 8, thereby automatically cleaning the top of the placement platform 3; the installation of the anti-slip pad 11 can increase the friction with the placement surface and improve the safety and stability of the placement of this utility model.

[0034] In summary:

[0035] In this utility model, the workpiece is first placed on the top of the placement platform 3. Then, by rotating the handle 504, the handle 504 drives the bidirectional lead screw 502 to rotate. As the bidirectional lead screw 502 rotates, it can drive the clamping plates 5 on both sides to move relative to each other. Then, as the clamping plates 5 move relative to each other, the protective pad 6 can clamp and fix the workpiece.

[0036] After this, the electric slider 402 is activated, causing the electric push rod 403 and the grinding wheel 405 to move inside the moving slide 401, so that the grinding wheel 405 is moved to the appropriate position. Then, the rotary motor 406 is activated, causing the transmission end of the rotary motor 406 to drive the grinding wheel 405 to rotate, thereby polishing the surface of the workpiece. During the polishing process, the negative pressure fan 7 can also be activated, so that the negative pressure fan 7 can extract the dust generated by the grinding wheel 405 and then discharge it to the outside through the dust discharge port 8.

[0037] Finally, when the grinding wheel 405 causes the placement table 3 to vibrate while grinding the workpiece, the shock absorber 302 can buffer and dampen the vertical vibration of the placement table 3. When the placement table 3 is subjected to left and right vibration, the placement table 3 will apply pressure to the support rod 307 on one side, causing the support rod 307 to slide inside the buffer cavity 308 of the support sleeve rod 306. During the movement of the support rod 307, the elasticity of the first helical spring 310 and the second helical spring 311 and the friction of the sealing gasket 309 can buffer and dampen the left and right vibration of the placement table 3.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A damping structure for a precision grinding machine comprising a machine frame (1), characterized in that, A buffer platform (2) is fixedly installed on the top of the frame (1), and a placement platform (3) is movably installed on the top of the buffer platform (2). The buffer platform (2) is equipped with a shock-absorbing assembly suitable for the placement platform (3). The shock-absorbing assembly includes a shock-absorbing cavity (301), shock absorbers (302), a support plate (303), a connecting shaft (304), a support bar (305), a support sleeve (306), a support rod (307), a buffer cavity (308), a sealing gasket (309), a first helical spring (310), and a second helical spring (311). The shock-absorbing cavity (301) is located on the top of the buffer platform (2). The shock absorbers (302) are arranged in a rectangular array and fixedly installed inside the shock-absorbing cavity (301). The support plate (303) is fixedly installed on top of the shock absorbers (302). The connecting shaft (304) is rotatably connected to the top of the support plate (303). The support bars (305) are symmetrically distributed and fixedly connected inside the damping cavity (301) and located outside the damper (302). The support sleeve rods (306) are symmetrically distributed and rotatably connected to opposite sides of the support plates (303). The support rod (307) is movably sleeved inside the support sleeve rod (306). The buffer cavity (308) is opened inside the support sleeve rod (306). The sealing gasket (309) is fixedly installed on the side surface of the support rod (307) and located inside the buffer cavity (308). The first helical spring (310) is fixedly connected to one end of the sealing gasket (309), and the second helical spring (311) is fixedly connected to the other end of the sealing gasket (309).

2. The vibration damping structure for a precision grinding machine according to claim 1, characterized in that, An L-shaped support frame (4) is fixedly installed on the top of the frame (1). A grinding structure is provided on the lower surface of the L-shaped support frame (4). The grinding structure includes a movable slide (401), an electric slider (402), an electric push rod (403), a mounting bracket (404), a grinding wheel (405), and a rotary motor (406). The movable slide (401) is opened on the lower surface of the L-shaped support frame (4).

3. The damping structure for a precision grinder according to claim 2, wherein The electric slider (402) is slidably connected to the outside of the movable slide (401), the electric push rod (403) is fixedly installed at the lower end of the electric slider (402), the mounting bracket (404) is fixedly installed at the lower end of the telescopic end of the electric push rod (403), the grinding wheel (405) is rotatably connected to the inside of the mounting bracket (404), the rotary motor (406) is fixedly installed on the back of the mounting bracket (404), and the transmission end of the rotary motor (406) is connected to the grinding wheel (405) in a transmission connection.

4. The damping structure for a precision grinder according to claim 1, wherein The top of the placement platform (3) is symmetrically equipped with clamps (5). The top of the placement platform (3) is provided with a moving component suitable for the clamps (5). The moving component includes a limiting slide groove (501), a two-way screw rod (502), a support slide groove (503), and a handle (504). The limiting slide groove (501) is symmetrically distributed on the top of the placement platform (3). The two-way screw rod (502) is rotatably connected to the inside of the placement platform (3) and extends into the inside of the limiting slide groove (501). The support slide groove (503) is symmetrically distributed on the top of the placement platform (3). The handle (504) is rotatably connected to the side of the placement platform (3) and is drivenly connected to the two-way screw rod (502). A protective pad (6) is fixedly installed on the opposite side of the clamps (5).

5. The damping structure for a precision grinder according to claim 2, wherein A negative pressure fan (7) is fixedly installed on the left side of the L-shaped support frame (4), and a ash discharge port (8) is opened on the right side of the frame (1). The ash discharge port (8) is connected to the negative pressure fan (7).

6. The damping structure for a precision grinder according to claim 1, wherein A control panel (9) is fixedly installed on the front of the frame (1), and support columns (10) are fixedly connected in a rectangular array at the bottom of the frame (1). Anti-slip pads (11) are fixedly installed at the bottom of the support columns (10).

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