A shaft step end face polishing device

Abstract

A kind of shaft step end face polishing device, including speed reducer, the speed reducer includes output hollow shaft, fixed carousel is equipped on the output hollow shaft, fixed carousel includes pressing block in upper end face, central axis hole in the center, connecting shaft in the center of the bottom of fixed carousel and for connecting output hollow shaft, pressing block is fixed on fixed carousel by locking bolt, connecting shaft is hollow in the middle, its inner diameter is consistent with the diameter of central axis hole, hollow shaft is installed in connecting shaft, hollow shaft passes through central axis hole and the upper end surface of hollow shaft is flush with the upper end surface of fixed carousel, the upper end surface of fixed carousel is equipped with sandpaper, sandpaper is equipped with with the concentric circle hole of central axis hole, the inner diameter of circle hole is consistent with hollow shaft, the distance of pressing block to the center of central axis hole is greater than the inner diameter of hollow shaft.The device can effectively remove burr and polish, compared with manual sandpaper polishing, not only improves work efficiency, and polishing effect is better, reduces the waste of sandpaper, saves cost.

Description

Technical Field

[0001] This invention relates to the field of polishing equipment technology, and in particular to a polishing device for the end face of a shaft step. Background Technology

[0002] After machining shaft-type workpieces, burrs often remain, including burrs on the end faces of steps. Common deburring methods include: manual sanding, sanding with a hand-grinding wheel and polishing wheel mounted on a lathe, and sanding with a polishing machine or grinding machine. The cost of these three methods increases progressively. To save costs, many factories use manual sanding to remove burrs.

[0003] As for manual sanding, pressing the sandpaper manually to sand the burrs on the end face of the shaft step requires many back and forth sandings to remove the burrs, and there is a possibility that the sanding is not clean enough. In addition, it consumes a lot of sandpaper, which is not only inefficient, but also increases the cost due to the excessive use of sandpaper.

[0004] It is evident that the current low-cost method is manual sanding, but this results in sandpaper waste and low efficiency. Therefore, reducing sandpaper waste and improving efficiency are urgent issues that need to be addressed. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a polishing device for the end face of a shaft step, which improves the low efficiency of manual sanding and can reduce sandpaper waste and save costs.

[0006] To achieve the above-mentioned objectives, the present invention adopts the following solution: a shaft step end face polishing device, comprising a reducer, the reducer comprising an output hollow shaft, a fixed turntable mounted on the output hollow shaft, the fixed turntable comprising a central shaft hole, a pressure block detachably disposed on the upper end face of the fixed turntable, a connecting shaft for connecting the output hollow shaft disposed at the center of the bottom of the fixed turntable, the pressure block being fixed to the fixed turntable by locking bolts, the connecting shaft being hollow in the middle, its inner diameter being the same as the diameter of the central shaft hole, a hollow shaft being installed in the connecting shaft, the hollow shaft passing through the central shaft hole and the upper end face of the hollow shaft being flush with the upper end face of the fixed turntable, sandpaper being disposed on the upper end face of the fixed turntable, the sandpaper having a circular hole concentric with the central shaft hole in the center, the circular hole being the same as the inner diameter of the hollow shaft, the pressure block being used to press the sandpaper tightly onto the upper end face of the fixed turntable, the distance from the pressure block to the center of the central shaft hole being greater than the inner diameter of the hollow shaft.

[0007] Preferably, the number of pressure blocks is at least two.

[0008] More preferably, each pressure block is evenly spaced on the upper surface of the fixed turntable.

[0009] More preferably, the sandpaper is metallographic sandpaper.

[0010] More preferably, the connecting shaft is fixed to the output hollow shaft by a set screw B, and the hollow shaft is fixed to the connecting shaft by a set screw A.

[0011] The beneficial effects of this invention are as follows: First, the shaft is inserted into the hollow shaft, and the burred stepped end face is pressed onto the sandpaper on the fixed turntable. Then, the sandpaper is rotated by the reducer to polish the stepped end face, which can effectively remove burrs. Compared with manual sandpaper polishing, it not only improves work efficiency, but also has a better polishing effect, reduces sandpaper waste, and saves costs. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure in an embodiment of the present invention;

[0013] Figure 2 This is a partial sectional view of the inserted gear shaft in the embodiment;

[0014] Figure 3 This is a top view of the fixed turntable in the embodiment.

[0015] In the picture:

[0016] 1 - Reducer; 2 - Hollow output shaft; 3 - Connecting shaft

[0017] 4 - Fixed turntable 5 - Locking bolt 6 - Pressure block

[0018] 7 – Set screw A 8 – Set screw B 9 – Sandpaper

[0019] 10 - Hollow shaft; 11 - Gear shaft; 12 - Round hole. Detailed Implementation

[0020] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.

[0021] It should be noted in advance that, in this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0022] Furthermore, in this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Moreover, "above," "over," and "on top" of the second feature include the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature include the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature. The terms "above," "below," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the invention 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 the invention.

[0023] like Figure 1-3 As shown, a shaft step end face polishing device includes a reducer 1, the reducer 1 includes an output hollow shaft 2, a fixed turntable 4 is mounted on the output hollow shaft 2, the fixed turntable 4 includes a pressure block 6 located on the upper end face, a central shaft hole located in the center, and a connecting shaft 3 located at the bottom center of the fixed turntable 4 for connecting the output hollow shaft 2. The pressure block 6 is fixed on the fixed turntable 4 by locking bolts 5. The connecting shaft 3 is hollow in the middle, and its inner diameter is the same as the diameter of the central shaft hole. A hollow shaft 10 is installed in the connecting shaft 3. The hollow shaft 10 passes through the central shaft hole and its upper end face is flush with the upper end face of the fixed turntable 4. A sandpaper 9 is provided on the upper end face of the fixed turntable 4. A circular hole 12 concentric with the central shaft hole is provided in the center of the sandpaper 9. The circular hole 12 is the same as the inner diameter of the hollow shaft 10. The distance from the pressure block 6 to the center of the central shaft hole is greater than the inner diameter of the hollow shaft 10.

[0024] When the shaft step end face polishing device provided in the above embodiment is working, firstly, the reducer 1 is fixedly installed on the workbench, then the fixed turntable 4 is fixed on the output hollow shaft 2, then the hollow shaft 10 is inserted into the connecting shaft 3 through the central shaft hole, the upper end face of the hollow shaft 10 is flush with the upper end face of the fixed turntable 4, then sandpaper 9 is laid on the upper end face of the fixed turntable 4, the round hole 12 is aligned with the inner hole of the hollow shaft 10, then the pressure block 6 is used to press the sandpaper 9, and then the locking bolt 5 is tightened; at this time, the operator holds one end of the gear shaft 11 and inserts the other end of the gear shaft 11 into the hollow shaft 10, the step end face of the gear shaft 11 presses on the sandpaper 9 and contacts the sandpaper 9, there is a gap between the part of the gear shaft 11 inserted into the hollow shaft 10 and the hollow shaft 10, then the reducer 1 is started to perform deburring and polishing work. This device drives the sandpaper 9 to rotate via the reducer 1 to polish the end face of the step, effectively removing burrs. Compared with manual sandpaper polishing, it not only improves work efficiency but also achieves better polishing results, reduces sandpaper waste, and saves costs.

[0025] It should be noted that the size of the hollow shaft 10 in this embodiment can be configured according to the size of different shafts, which can achieve the function of quick mold change, so that one machine can be used for deburring and polishing the stepped end face of shafts of different sizes, further saving costs. Among them, the fixed turntable 4 and the connecting shaft 3 can be integrally formed, or they can be two parts fixedly connected. The length of the connecting shaft 3 can be configured according to the length of different shafts.

[0026] In this embodiment, as a preferred method, the number of pressure blocks 6 is at least two, for example four, which can exert a strong clamping force on the sandpaper 9.

[0027] More preferably, each pressure block 6 is evenly spaced on the upper surface of the fixed turntable 4, which allows the sandpaper 9 to be pressed evenly with a uniform pressure, resulting in better firmness.

[0028] In addition, in this embodiment, as a more preferred embodiment, the sandpaper 9 is metallographic sandpaper; the connecting shaft 3 is fixed to the output hollow shaft 2 by the set screw B8, and the hollow shaft 10 is fixed to the connecting shaft 3 by the set screw A7.

[0029] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the product form and style of the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. As long as the content does not depart from the scope of the present invention, it still falls within the patent scope of the present invention.

Claims

1. A shaft step end face polishing apparatus characterized by comprising: The device includes a speed reducer (1), which includes an output hollow shaft (2). A fixed turntable (4) is mounted on the output hollow shaft (2). The fixed turntable (4) includes a central shaft hole. A pressure block (6) is detachably provided on the upper end face of the fixed turntable (4). A connecting shaft (3) for connecting the output hollow shaft (2) is provided at the center of the bottom of the fixed turntable (4). The pressure block (6) is fixed on the fixed turntable (4) by locking bolts (5). The connecting shaft (3) is hollow in the middle, and its inner diameter is the same as the diameter of the central shaft hole. (3) A hollow shaft (10) is installed in the center. The hollow shaft (10) passes through the central shaft hole and the upper end face of the hollow shaft (10) is flush with the upper end face of the fixed turntable (4). The upper end face of the fixed turntable (4) is provided with sandpaper (9). The sandpaper (9) has a circular hole (12) in the center that is concentric with the central shaft hole. The circular hole (12) is the same size as the inner diameter of the hollow shaft (10). The pressure block (6) is used to press the sandpaper (9) onto the upper end face of the fixed turntable (4). The distance from the pressure block (6) to the center of the central shaft hole is greater than the inner diameter of the hollow shaft (10).

2. The shaft step end face polishing apparatus according to claim 1, characterized by: The number of the pressing blocks (6) is at least two.

3. The shaft step end face polishing device according to claim 2, characterized in that: Each pressure block (6) is evenly spaced on the upper surface of the fixed turntable (4).

4. The shaft step end face polishing device according to claim 3, characterized in that: The sandpaper (9) is metallographic sandpaper.

5. The shaft step end face polishing device according to claim 4, characterized in that: The connecting shaft (3) is fixed to the output hollow shaft (2) by the set screw B (8), and the hollow shaft (10) is fixed to the connecting shaft (3) by the set screw A (7).

Images