End face reversal grinding device

Abstract

The utility model belongs to the technical field of polishing devices, and particularly relates to an end face reversal polishing device which comprises a workbench, a vertical plate arranged on the workbench, a lifting platform arranged on the vertical plate, a vertical rotating shaft arranged on the lifting platform, a polishing wheel arranged at the bottom end of the rotating shaft, and a first motor arranged on the lifting platform and used for driving the polishing wheel to rotate. A first telescopic mechanism for driving the lifting platform to ascend and descend is arranged on the vertical plate, a second motor is arranged in the lifting platform, and a workpiece chuck corresponding to the grinding wheel is arranged on an output shaft of the second motor. A protective ring surrounding the workpiece chuck is arranged on the workbench, a cover plate located above the grinding wheel is arranged on the rotating shaft, an air exhaust hole is formed in the cover plate, and a pipe joint is arranged on the air exhaust hole. Compared with the prior art, the grinding device has the advantages that the grinding efficiency of the end faces of the disc parts can be remarkably improved, meanwhile, dust pollution is effectively reduced, and the working environment is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of grinding devices, and specifically relates to an end-face reversal grinding device. Background Technology

[0002] In the automotive manufacturing industry, disc-shaped parts, such as connecting flanges, are indispensable components, widely used in transmission systems, connecting devices, and various mechanical equipment. These parts not only require high strength and precise dimensions, but the surface finish of their end faces is also crucial, directly affecting the part's fitting accuracy, sealing performance, and overall aesthetics. Therefore, grinding and polishing the end faces is an indispensable process in the production of disc-shaped parts.

[0003] Traditional end-face grinding methods primarily rely on handheld grinding wheels or stationary grinding machines, requiring operators to manually control the grinding tools to work on the end faces of parts. However, this method has several limitations: firstly, it is inefficient, limited by the speed and precision of manual operation, making it difficult to meet the needs of large-scale production; secondly, the grinding process easily generates a large amount of dust, which not only pollutes the working environment and harms the health of operators but also increases the burden of subsequent cleaning work. Furthermore, manual grinding can also lead to uneven wear on the surface of parts, affecting the consistency and stability of product quality. In conclusion, there is a certain market demand for designing a novel end-face reversing grinding device. Summary of the Invention

[0004] To address the shortcomings of the existing technology, this invention provides an end-face reversal grinding device to solve the aforementioned problems.

[0005] This utility model discloses an end-face reversing grinding device, comprising a worktable, a vertical plate on the worktable, a lifting platform on the vertical plate, a vertical rotating shaft on the lifting platform, a grinding wheel at the bottom end of the rotating shaft, a first motor for driving the grinding wheel to rotate on the lifting platform, a first telescopic mechanism for driving the lifting platform to rise and fall on the vertical plate, a second motor inside the lifting platform, and a workpiece chuck corresponding to the grinding wheel on the output shaft of the second motor; a protective ring surrounding the workpiece chuck on the worktable, a cover plate above the grinding wheel on the rotating shaft, an air extraction hole on the cover plate, and a pipe joint on the air extraction hole.

[0006] Furthermore, the workbench surface is provided with an annular groove adapted to the protective ring, the protective ring is slidably disposed in the annular groove, and the workbench is provided with a second telescopic mechanism for driving the protective ring to slide up and down; the bottom end of the protective ring is provided with a conical base plate, and the center of the base plate is provided with a central through hole through which the output shaft of the second motor passes.

[0007] Furthermore, the outer ring of the protective ring is provided with a limit slider, and the annular groove is provided with a limit rail corresponding to the limit slider.

[0008] Preferably, both the first telescopic mechanism and the second telescopic mechanism are piston cylinders.

[0009] Furthermore, the top of the protective ring is provided with an annular end face bearing.

[0010] Furthermore, the inner wall of the protective ring is provided with several ventilation holes, and the two ends of the ventilation holes are respectively connected to the upper half and the lower half of the protective ring.

[0011] Furthermore, the upright plate is provided with a linear slide rail, and the lifting platform is provided with a guide groove adapted to the linear slide rail.

[0012] Furthermore, the workbench is provided with several stabilizing feet around its perimeter.

[0013] Furthermore, the rotating shaft is provided with an external thread, and a nut is screwed onto the external thread. The bottom end of the rotating shaft is provided as a spline shaft, and the top of the grinding wheel is provided with a spline groove that slides with the spline shaft. A buffer spring is sleeved on the rotating shaft, and the two ends of the buffer spring abut against the nut and the grinding wheel, respectively.

[0014] Compared with existing technologies, this grinding device can significantly improve the efficiency of grinding the end faces of disc-shaped parts, while effectively reducing dust pollution, improving the working environment, and enhancing overall production efficiency and product quality, thus meeting the automotive industry's demand for high-quality and high-efficiency production. Attached Figure Description

[0015] Figure 1 This is a front view of the present invention;

[0016] Figure 2 This is a left sectional view of the present invention;

[0017] Figure 3 This is a top-view cross-sectional view of the protective ring.

[0018] In the diagram: 1. Workbench; 2. Vertical plate; 3. Lifting platform; 4. Rotary shaft; 5. Grinding wheel; 6. First motor; 7. First telescopic mechanism; 8. Second motor; 9. Workpiece chuck; 10. Protective ring; 11. Cover plate; 12. Pipe joint; 13. Second telescopic mechanism; 14. Base plate; 15. Central through hole; 16. Limiting slider; 17. End face bearing; 18. Ventilation hole; 19. Linear slide rail; 20. Stabilizing foot; 21. Nut; 22. Buffer spring; 23. Workpiece. Detailed Implementation

[0019] To better understand this utility model, the following is in conjunction with... Figures 1 to 3 The embodiments of this utility model will be explained in detail below.

[0020] It should be noted that the directions "front, back, left, right, up, down" mentioned in the text are all relative to the direction of the text. Figure 1 The directions are based on "front, back, left, right, up, down".

[0021] See Figure 1 and Figure 2 This utility model discloses an end-face reversing grinding device, comprising a stable worktable 1, on which a vertical plate 2 is provided for supporting and fixing a lifting platform 3 above. A horizontal top plate is provided on the top plate, and a first telescopic mechanism 7 for driving the lifting platform 3 to rise and fall is provided on the top plate. The first telescopic mechanism 7 is preferably a piston cylinder, which is fixed on the top plate, and its piston end is connected to the lifting platform 3.

[0022] A vertical rotating shaft 4 is installed at the top of the lifting platform 3, and a grinding wheel 5 is connected to the bottom of the rotating shaft 4 for grinding the workpiece. To drive the grinding wheel 5 to rotate, a first motor 6 is installed on the lifting platform 3, which drives the rotating shaft 4 to rotate via gear transmission or directly. Above the grinding wheel 5, a cover plate 11 is installed on the rotating shaft 4. The cover plate 11 has an air extraction hole in the center, which is connected to an external dust collection system (dust collection equipment) through a pipe connector 12 to effectively collect the dust generated during the grinding process.

[0023] Inside the lifting platform 3, there is a second motor 8, whose output shaft is equipped with a workpiece chuck 9 for clamping the workpiece 23 to be polished. The workpiece chuck 9 can be a mechanical chuck, a pneumatic chuck, or a fixed fixture specifically for processing the workpiece 23. Its design must ensure that it can simultaneously meet the requirements of fixing and rotating the workpiece 23 in order to achieve a comprehensive and uniform polishing effect.

[0024] To enhance safety and dust control during the grinding process, a protective ring 10 surrounding the workpiece chuck 9 is provided on the worktable 1. A limit slider 16 is provided on the outer ring of the protective ring 10, and an annular groove adapted to the protective ring 10 is provided on the surface of the worktable 1. The protective ring 10 slides vertically within the annular groove, which is equipped with a limit rail corresponding to the limit slider 16, allowing the protective ring 10 to slide vertically on the worktable 1. Simultaneously, a second telescopic mechanism 13 (preferably a piston cylinder) is provided within the worktable 1 to drive the protective ring 10 to slide vertically.

[0025] The bottom of the protective ring 10 is designed as a conical base plate 14, with a central through hole 15 for the output shaft of the second motor 8 to pass through, ensuring smooth contact between the workpiece and the grinding wheel 5. At the same time, a limit slider 16 is provided on the periphery of the protective ring 10, which matches the limit slide rail on the worktable 1, ensuring the stability and accuracy of the protective ring 10 during the lifting process.

[0026] To further improve dust collection efficiency, the inner wall of the protective ring 10 is provided with several ventilation holes 18. The two ends of these ventilation holes 18 are connected to the upper and lower halves of the protective ring 10 to form an annular air duct, which helps to guide the dust generated during the grinding process to the exhaust port more effectively.

[0027] To enhance the stability and guidance of the lifting platform 3, a linear slide rail 19 is provided on the upright plate 2, and a matching guide groove is provided on the lifting platform 3. This design ensures the smoothness and accuracy of the lifting platform 3 during the lifting process.

[0028] In addition, to enhance the stability of the entire device, several stabilizing feet 20 are provided around the workbench 1 to ensure the levelness and stability of the device during operation.

[0029] To ensure stable output from the first motor 6 and the second motor 8, bearings compatible with their output shafts are installed on the lifting platform 3 and the worktable 1, respectively.

[0030] Considering that friction will occur when the cover plate 11 rotates with the shaft 4 and comes into contact with the top of the protective ring 10, an annular end face bearing 17 is provided at the top of the protective ring 10. The end face bearing 17 replaces the direct contact between the protective ring 10 and the cover plate 11 to avoid the resistance generated by friction.

[0031] The design of the rotating shaft 4 employs an external thread and nut 21 connection, as well as a splined shaft and splined groove connection, enabling the grinding wheel 5 to be detachable and adjustable on the rotating shaft 4. Specifically, the rotating shaft 4 has an external thread, on which the nut 21 is screwed. The bottom end of the rotating shaft 4 is a splined shaft, and the top of the grinding wheel 5 has a splined groove that slides with the splined shaft. A buffer spring 22 is fitted onto the rotating shaft 4, with its two ends abutting against the nut 21 and the grinding wheel 5 respectively. This absorbs and mitigates the impact and vibration caused by uneven workpiece surfaces or uneven grinding force during the grinding process, thereby improving grinding quality and extending the equipment's service life.

[0032] The usage and principle of this utility model:

[0033] First, the workpiece to be ground is fixed by the workpiece chuck 9. Then, the height of the lifting platform 3 is adjusted by the first telescopic mechanism 7 to maintain appropriate contact pressure between the grinding wheel 5 and the end face of the workpiece 23. Next, the second telescopic mechanism 13 expands to raise the protective ring 10, so that the end face bearing 17 at the top of the protective ring 10 abuts against the cover plate 11, forming a relatively sealed space. Next, the first motor 6 is started in forward rotation and the second motor 8 in reverse rotation, causing the grinding wheel 5 and the workpiece 23 to rotate simultaneously, starting the grinding operation. During the grinding process, the dust collection system (dust extraction equipment) sucks in and processes the generated dust through the air extraction hole and pipe joint 12 on the cover plate 11. When it is necessary to adjust the contact pressure or position between the grinding wheel 5 and the workpiece, this can be achieved by adjusting the nut 21 to increase or decrease the elastic force applied to the grinding wheel 5 by the buffer spring 22. After grinding is completed, the motor and dust collection system are turned off, and the protective ring 10 is lowered by the retraction and reset of the second telescopic mechanism 13, so that the worker can remove the ground workpiece 23 and replace it with a new workpiece 23 to continue the operation.

[0034] In the description of this utility model, it should be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise specified and limited, it should be noted that the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two components, and can be direct connections or indirect connections through an intermediate medium. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0035] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An end-face reverse polishing apparatus characterized by comprising: The utility model provides a workbench, which comprises a workbench (1), a vertical plate (2) arranged on the workbench (1), a lifting platform (3) arranged on the vertical plate (2), a vertical rotating shaft (4) arranged on the lifting platform (3), a grinding wheel (5) arranged at the bottom end of the rotating shaft (4), a first motor (6) arranged on the lifting platform (3) and used to drive the grinding wheel (5) to rotate, a first telescopic mechanism (7) arranged on the vertical plate (2) and used to drive the lifting platform (3) to lift, a second motor (8) arranged in the lifting platform (3), and a workpiece chuck (9) corresponding to the grinding wheel (5) arranged on the output shaft of the second motor (8); a protective ring (10) surrounding the workpiece chuck (9) is arranged on the workbench (1), a cover plate (11) located above the grinding wheel (5) is arranged on the rotating shaft (4), the cover plate (11) is provided with an air extraction hole, and a pipe joint (12) is arranged on the air extraction hole.

2. A face reversal lapping device as defined in claim 1, wherein: An annular groove matched with the protective ring (10) is arranged on the tabletop of the workbench (1), the protective ring (10) is arranged in the annular groove in a sliding mode, and a second telescopic mechanism (13) is arranged in the workbench (1) and used to drive the protective ring (10) to slide up and down; a tapered bottom plate (14) is arranged at the bottom end of the protective ring (10), and a center through hole (15) through which the output shaft of the second motor (8) passes is arranged at the center of the bottom plate (14).

3. A face reversal lapping device as defined in claim 2 wherein: A limiting sliding block (16) is arranged on the outer ring of the protective ring (10), and a limiting sliding rail corresponding to the limiting sliding block (16) is arranged on the annular groove.

4. An end-face inverting lapping device as defined in claim 2, characterized in that: Both the first telescopic mechanism (7) and the second telescopic mechanism (13) are piston cylinders.

5. A device for end-face reversal lapping as defined in claim 1, characterized in that An annular end face bearing (17) is arranged at the top end of the protective ring (10).

6. A face reversal lapping device as defined in claim 1 wherein: A plurality of ventilation holes (18) are arranged on the inner wall of the protective ring (10), and the two ends of the ventilation holes (18) are connected with the upper half and the lower half of the protective ring (10) respectively.

7. A device for end-face reversal lapping as defined in claim 1, characterized in that A linear sliding rail (19) is arranged on the vertical plate (2), and a guide groove matched with the linear sliding rail (19) is arranged on the lifting platform (3).

8. A device for end-face reversal lapping as defined in claim 1, characterized in that A plurality of stabilizing feet (20) are arranged around the workbench (1).

9. A device for end-face reversal lapping as defined in claim 1, characterized in that An external thread is arranged on the rotating shaft (4), a nut (21) is screwed on the external thread, the bottom end of the rotating shaft (4) is arranged as a spline shaft, the top of the grinding wheel (5) is provided with a spline groove matched with the spline shaft, a buffer spring (22) is sleeved on the rotating shaft (4), and the two ends of the buffer spring (22) abut against the nut (21) and the grinding wheel (5) respectively.

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