Winding brush for polishing surfaces of mechanical parts

Abstract

The invention solves the problem of high replacement cost of winding brushes, and relates to the field of winding brushes, in particular to a winding brush for surface polishing of mechanical parts, which comprises a plurality of single-circle brush groups and a connecting ring, the upper single-circle brush group is connected with the head end of the lower single-circle brush group step by step through the tail end of the upper single-circle brush group to form a continuous spiral arrangement structure, and the connecting ring is connected with the upper single-circle brush group. The connecting ring is arranged on the outer side of the spiral arrangement structure formed by the single-circle brush sets, the limiting mechanism is installed on the connecting ring and combined with the single-circle brush sets in an inserted mode, and the rotating structure is installed on the limiting mechanism and used for enabling the limiting mechanism to synchronously adjust the combination state between the limiting mechanism and the single-circle brush sets. According to the basic structure of the winding brush, the multiple single-circle brush sets are detachably combined to form a continuous spiral arrangement structure, the length of the winding brush can be changed from a fixed mode to a freely-adjusted mode according to actual needs, and therefore the adaptability of the winding brush to parts with different lengths is improved, and meanwhile the different single-circle brush sets can be conveniently and independently used and replaced.

Description

Technical Field

[0001] The present invention relates to the technical field of rotary brushes, and specifically to a rotary brush for polishing the surface of mechanical parts. Background Art

[0002] During the production and processing of metals, minute flaws, oxide layers, or dirt may form on the surface. By rotating a rotary brush on the metal surface, due to the softness and elasticity of the bristles, it can evenly cover the metal surface, avoiding the local excessive wear or uneven polishing that may occur with traditional polishing methods. Through the rotation of the rotary brush, the metal surface can be evenly polished, ultimately forming a smooth and highly glossy surface.

[0003] Under normal circumstances, when polishing the surface of mechanical parts, the edges, sharp corners, or steps on the surface of the mechanical parts will cause concentrated friction on the bristles, resulting in the bristles in these areas being more easily damaged. Severe damage will affect the subsequent polishing effect, so it needs to be replaced in a timely manner. At this time, the remaining part of the rotary brush is wasted because it cannot be adjusted, increasing the consumable cost. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a rotary brush for polishing the surface of mechanical parts, so as to solve the problem of high consumable cost caused by the need to replace the whole rotary brush due to severe local damage of the rotary brush as mentioned in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A rotary brush for polishing the surface of mechanical parts, comprising:

[0006] A single - loop brush group, the number of which is several, and the upper single - loop brush group is connected step by step through its tail end to the head end of the lower single - loop brush group to form a continuous spiral arrangement structure;

[0007] An adapter ring, arranged on the outside of the spiral arrangement structure formed by several single - loop brush groups;

[0008] A limiting mechanism, installed on the adapter ring and inserted and combined with several single - loop brush groups;

[0009] A rotating structure, installed on the limiting mechanism and used to synchronously adjust the combined state between the limiting mechanism and several single - loop brush groups;

[0010] Among them, the single - loop brush group includes a brush tube arranged in a spiral shape and a bristle cluster embedded in the brush tube. An integral spiral strip is connected to the outer surface of the brush tube. A groove is opened at the tail end of the spiral strip, and one end at the top of the spiral strip is connected with an embedded structure for mutually fitting with the groove in the upper spiral strip.

[0011] Preferably, the groove includes a propulsion cavity that is narrow at the top and wide at the bottom, a thin strip cavity that communicates with both sides of the middle of the propulsion cavity, and a reserved cavity that communicates with the bottom of one end of the propulsion cavity;

[0012] The lengths of the propulsion cavity and the thin strip cavity are 1 / 4 of the length of a single-turn brush set.

[0013] Preferably, the embedded structure includes an arc-shaped strip that is consistent with the shape of the propulsion cavity. When the arc-shaped strip is squeezed into the groove, the gap between it and the groove is between 1 mm and 2 mm. Memory metal strips that fit the thin strip cavity are glued to both sides of the middle of the arc-shaped strip;

[0014] The material of the arc-shaped strip is any one of rubber and silica gel.

[0015] Preferably, a positioning cylinder is installed at the top of one end of the arc-shaped strip. A limiting piece that is consistent with the shape of the reserved cavity is arranged below one end of the arc-shaped strip. A notch that is consistent with the shape and size of the limiting piece is opened at the bottom of the arc-shaped strip. A spring structure that passes through the arc-shaped strip is connected between the top of the limiting piece and the top wall of the positioning cylinder. A dial plate is arranged at the top of the positioning cylinder. A pull rod that sequentially passes through the positioning cylinder, the arc-shaped strip and is connected to the top of the limiting piece is installed at the bottom of the dial plate.

[0016] Preferably, the limiting mechanism includes a rod body assembly fixedly inserted on the connecting ring. Solid columns are installed at the bottoms of several spiral strips, and their diameters are the same as the outer diameter of the positioning cylinder. Limiting rings are movably sleeved on the outer surface of the positioning cylinder;

[0017] Several bidirectional lead screws arranged up and down are rotatably installed on the rod body assembly. Slide rings that control the adjustment of the distance between two limiting rings are sleeved on the outer surface of the bidirectional lead screw through threads.

[0018] Preferably, the rod body assembly includes several guiding structures arranged on the side of the bidirectional lead screw away from the single-turn brush set. A shaft rod that is rotatably connected to the bidirectional lead screw is installed on the guiding structure. Two guiding rings integrally connected to the slide ring are slidably sleeved on the guiding structure.

[0019] Preferably, the rotating structure includes two extension rods installed on the surface of the rod body assembly and arranged up and down. A vertical rod body is rotatably connected between the two extension rods. Gear rings one are fixedly sleeved on the middle parts of several bidirectional lead screws. Several gear rings two that are meshed with the gear rings one through tooth grooves are fixedly sleeved on the outer surface of the vertical rod body.

[0020] Preferably, the height difference between the bottom of the solid column and the connection of the bidirectional lead screw and the shaft rod is greater than the height of the solid column. The height of the solid column is equal to the sum of the heights of the positioning cylinder and the dial plate. The materials of the solid column, the positioning cylinder and the dial plate are any one of hard plastic and metal.

[0021] With the above technical solution, the present invention provides a rotary brush for surface polishing of mechanical parts, which has at least the following beneficial effects:

[0022] 1. The basic structure of this rotary brush is composed of several single-loop brush groups that can be detachably combined to form a continuous spiral arrangement structure. It can change the length of the rotary brush from fixed to freely adjustable according to actual needs, thereby improving its adaptability to parts of different lengths. At the same time, different single-loop brush groups can be used and replaced separately, reducing maintenance costs.

[0023] 2. When the upper and lower single-loop brush groups of this rotary brush are combined, through the arc-shaped strip made of glue material and the memory metal strip, the friction surface during the insertion of the embedded structure into the groove becomes smoother, effectively reducing the friction force and promoting smooth insertion. At the same time, the deformability of the embedded structure is ensured, making it more adaptable to the shape of the groove.

[0024] 3. By the combined action of the dial plate, the pull rod and the spring structure of this rotary brush, the relative height position of the limit piece can be adjusted. When the embedded structure is inserted into the groove in another single-loop brush group, the limit piece is embedded inside the space of the reserved cavity. At the same time, a height difference gradually forms between the reserved cavity and the propulsion cavity, effectively ensuring the stability of the embedded structure inserted and fitted in the groove.

[0025] 4. By rotating the bidirectional lead screw of this rotary brush, the relative movement of the two slider rings on its surface is controlled. Finally, the two limit rings are respectively sleeved on the corresponding solid column and the positioning cylinder. While further increasing the stability when the upper and lower single-loop brush groups are combined, the overall structural strength and torsional resistance of the basic structure of the finally formed spiral arrangement type rotary brush are improved.

[0026] 5. This rotary brush can effectively ensure the unity when several limit rings are combined with several solid columns and positioning cylinders, and improve the efficiency at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings:

[0028] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 is a schematic diagram of the structure of a single-loop brush group of the present invention;

[0030] Figure 3 is a schematic diagram of the planar structure of the present invention;

[0031] Figure 4 is a schematic diagram of the structure of the embedded structure of the present invention;

[0032] Figure 5 This is a schematic diagram of the installation structure of the spiral strip and the limiting mechanism of the present invention;

[0033] Figure 6 This is a schematic diagram of the split structure of the limiting mechanism of the present invention;

[0034] Figure 7 This is a schematic diagram of the rotating structure of the present invention.

[0035] In the figure:

[0036] 100, single - loop brush group; 101, brush tube; 102, brush hair cluster; 103, spiral strip; 104, groove; 1041, propulsion cavity; 1042, thin - strip cavity; 1043, reserved cavity; 105, embedded structure; 1051, arc - shaped strip; 1052, shape - memory metal strip; 1053, positioning cylinder; 1054, limiting piece; 1055, spring structure; 1056, dial; 1057, pull rod;

[0037] 200, connection ring;

[0038] 300, limiting mechanism; 301, rod body assembly; 3011, guiding structure; 3012, shaft rod; 3013, guiding ring; 302, solid column; 303, limiting ring; 304, bidirectional lead screw; 305, slider ring;

[0039] 400, rotating structure; 401, vertical rod body; 402, gear ring one; 403, gear ring two. Specific embodiments

[0040] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. [[ID=3②]]

[0041] Embodiment 1

[0042] [[ID=3⑦]]Please refer to Figures 1 - 7, this embodiment proposes a rotary brush for surface polishing of mechanical parts, which can achieve the purpose of correspondingly increasing or decreasing the length of the rotary brush according to the change of the length of the part to be polished. The rotary brush has a number of single-loop brush groups 100, and the upper single-loop brush group 100 is connected step by step through its tail end to the head end of the lower single-loop brush group 100 to form a continuous spiral arrangement structure. An adapter ring 200 is arranged outside the spiral arrangement structure formed by the number of single-loop brush groups 100. A limiting mechanism 300 inserted and combined with the number of single-loop brush groups 100 is installed on the adapter ring 200, and a rotating structure 400 for synchronously adjusting the combined state between the limiting mechanism 300 and the number of single-loop brush groups 100 is installed on the limiting mechanism 300. After combining the required number of single-loop brush groups 100 up and down to form a spiral arrangement structure, the adapter ring 200 is sleeved outside the middle of this spiral arrangement structure, and then the rotating structure 400 is used to drive the limiting mechanism 300 to tighten the connection between the two single-loop brush groups 100 connected up and down, so as to prevent the adjacent two single-loop brush groups 100 from separating during the subsequent surface polishing operation of mechanical parts. Among them, by setting the integral rotary brush into a mode of combining a number of single-loop brush groups 100, the fixity of the rotary brush in length change is eliminated, and the length of the single-loop brush group 100 can be freely adjusted according to actual needs. At the same time, different single-loop brush groups 100 can be used and replaced separately, reducing the maintenance cost and prolonging the service life of the tool.

[0043] Specifically, the single-loop brush group 100 includes a brush tube 101 arranged in a spiral shape and a brush hair cluster 102 embedded in the brush tube 101. A spiral strip 103 is integrally connected to the outer surface of the brush tube 101. A groove 104 is opened at the tail end of the spiral strip 103. One end at the top of the spiral strip 103 is connected with an embedded structure 105 for fitting with the groove 104 in the upper spiral strip 103. The embedded structure 105 has deformability. As can be seen from the above, when the upper and lower single-loop brush groups 100 are combined, by aligning the embedded structure 105 at the head end of the lower single-loop brush group 100 with the groove 104 at the tail end of the upper single-loop brush group 100 and squeezing it inward along the path of the groove 104 until the head end of the lower single-loop brush group 100 is tightly attached to the tail end of the upper single-loop brush group 100, the connection and assembly of the upper and lower single-loop brush groups 100 can be realized at this time.

[0044] Under normal circumstances, the embedded structure 105 embedded inside the groove 104 is itself made of a rubber-like material. Therefore, when it is inserted into the groove 104 from the end opening and completely immersed in it, due to the relatively high friction coefficient between rubber and metal, the efficiency of the combination between the upper and lower single-loop brush groups 100 is affected. In order to effectively improve the smoothness of the embedded structure 105 inserted into the groove 104. Such as Figures 2 - 4As shown, the groove 104 includes a propulsion cavity 1041 that is narrower at the top and wider at the bottom, a thin strip cavity 1042 that communicates with both sides of the middle of the propulsion cavity 1041, and a reserved cavity 1043 that communicates with the bottom of one end of the propulsion cavity 1041. The lengths of the propulsion cavity 1041 and the thin strip cavity 1042 are 1 / 4 of the length of the single-loop brush group 100. Such a long enough connection space can fully ensure the stability of the combination of the upper and lower single-loop brush groups 100. Additionally, the embedded structure 105 includes an arc-shaped strip 1051 that is consistent with the shape of the propulsion cavity 1041. When the arc-shaped strip 1051 is squeezed into the groove 104, the gap between it and the groove 104 is between 1 mm and 2 mm. Memory metal strips 1052 that fit the thin strip cavity 1042 are adhesively bonded to both sides of the middle of the arc-shaped strip 1051. By means of the arc-shaped strip 1051 that is slightly smaller than the propulsion cavity 1041 and the memory metal strips 1052 that fit the thin strip cavity 1042 exactly, it can effectively prevent the separation between the embedded structure 105 and the groove 104 when the embedded structure 105 is subjected to an upward pulling force. The material of the arc-shaped strip 1051 is any one of rubber and silica gel. The memory metal strip 1052 itself has plasticity in shape. By combining it with the arc-shaped strip 1051 made of rubber / silica gel, it can ensure that the overall structure formed by the two retains the deformability of the structure and shape, and helps this overall structure effectively adapt to the spiral shape of the groove 104. Additionally, the surface of the memory metal strip 1052 is relatively smooth and has high wear resistance, which can further improve the contact quality between the arc-shaped strip 1051 and the inner wall of the spiral groove 104, thereby making the friction surface of the embedded structure 105 smoother during the process of inserting it into the groove 104, effectively reducing its frictional force and facilitating smooth insertion.

[0045] Continuing from the above, since the embedded structure 105 and the groove 104 are in a plugged-in combination state, and during the subsequent stage of using the rotary brush, when the rotary brush is installed on the surface of the part to be processed and the equipment is used to control the part to rotate and polish relative to the rotary brush, the single-loop brush group 100 is subjected to an external force in a set direction, which may cause the two combined single-loop brush groups 100 to become separated. In order to effectively avoid this problem, as Figure 2 and Figure 4As shown in the figure, a positioning cylinder 1053 is installed at the top of one end of the arc-shaped strip 1051, and a limiting piece 1054 with the same shape as the reserved cavity 1043 is arranged below one end of the arc-shaped strip 1051. A notch with the same shape and size as the limiting piece 1054 is formed at the bottom of the arc-shaped strip 1051. A spring structure 1055 passing through the arc-shaped strip 1051 is connected between the top of the limiting piece 1054 and the top wall of the positioning cylinder 1053. When the spring structure 1055 is not under external force, the limiting piece 1054 connected to it is located below the arc-shaped strip 1051 instead of being embedded in the notch. A dial plate 1056 is arranged at the top of the positioning cylinder 1053, and a pull rod 1057 is installed at the bottom of the dial plate 1056, which sequentially passes through the positioning cylinder 1053, the arc-shaped strip 1051 and is connected to the top of the limiting piece 1054. In actual application, by pulling up the dial plate 1056, an upward pulling force is generated on the limiting piece 1054 by the pull rod 1057, so as to control the limiting piece 1054 to be embedded within the range of the notch. At the same time, the spring structure 1055 contracts its own length. At this time, the end shape of the embedded structure 105 is adapted to the opening shape of the end of the groove 104, so as to facilitate the insertion of the embedded structure 105 into the groove 104. Then, by applying a pulling force to the positioning cylinder 1053, the entire embedded structure 105 is urged to slide along the path of the groove 104 until it is completely embedded. And as the limiting piece 1054 enters the range of the reserved cavity 1043, the extrusion force received by the spring structure 1055 is cancelled, and at the same time, the pull rod 1057 and the dial plate 1056 move downward under the action of their own gravity. Finally, the limiting piece 1054 is embedded inside the space of the reserved cavity 1043, and its contact with the groove wall of the reserved cavity 1043 is closer, improving the tensile strength. The pulling force applied along the opening direction of the head end of the groove 104 will encounter greater resistance due to the depth and area of the contact surface, thereby effectively increasing the stability of the embedded structure 105 inserted and fitted in the groove 104.

[0046] Embodiment 2

[0047] In order to further increase the stability of the finally assembled spiral arrangement structural type winding brush base structure on the basis of the above Embodiment 1, such as Figure 1 、 Figure 3 and Figure 6As shown, the limiting mechanism 300 includes a rod assembly 301 fixedly plugged into the connecting ring 200. A solid column 302 having a diameter consistent with the outer diameter of the positioning cylinder 1053 is mounted at the bottom of each of the spiral strips 103. The height difference between the bottom of the solid column 302 and the connection between the bidirectional screw 304 and the shaft 3012 is greater than the height of the solid column 302. The height of the solid column 302 is equal to the sum of the heights of the positioning cylinder 1053 and the shift plate 1056. The solid column 302, the positioning cylinder 1053, and the shift plate 1056 are made of either hard plastic or metal to ensure structural strength. A limiting ring 303 is movably mounted on the outer surface of the positioning cylinder 1053. Several bidirectional screws 304 arranged vertically are rotatably mounted on the rod assembly 301. The outer surface of the bidirectional screws 304 is threadedly mounted with a slider ring 305 that controls the spacing between the two limiting rings 303. In actual application, by rotating and toggling the bidirectional screw rod 304, the two upper and lower slider rings 305 on its surface are driven to adjust in relative or opposite directions, so that the entire limiting mechanism 300 is aligned with the set position of the assembled spiral arrangement structure, so that the two limiting rings 303 and the solid column 302 and the positioning cylinder 1053 are on the same vertical axis, which is convenient for the subsequent control of the two slider rings 305 on the bidirectional screw rod 304 to move relative to each other, so that the two limiting rings 303 are respectively mounted on the solid column 302 and the positioning cylinder 1053, thereby further increasing the stability of the combination of the upper and lower single-loop brush groups 100, and improving the overall structural strength and torsional resistance of the spiral arrangement structure brush winding base structure formed.

[0048] Specifically, following the above, in order to ensure that when the bidirectional screw rod 304 is rotated, the two slider rings 305 on its surface only move up and down, such as Figure 1 and Figure 6 As shown, the rod body assembly 301 includes a plurality of guide structures 3011 arranged on the side of the bidirectional screw 304 away from the single-loop brush group 100, and a shaft 3012 rotatably connected to the bidirectional screw 304 is installed on the guide structure 3011. Two guide rings 3013 integrally connected to the slider ring 305 are slidingly sleeved on the guide structure 3011. The guide structure 3011 is used to limit the overall structure formed by the guide ring 3013, the slider ring 305 and the limit ring 303, which can effectively prevent the overall structure from rotating when the bidirectional screw 304 is rotated.

[0049] Example 3

[0050] Following the above-mentioned embodiment 2, since a large number of single-circle brush groups 100 are required to form the brush-wrapped basic structure, when the limiting mechanism 300 is used to improve the overall strength of the brush-wrapped basic structure, it is necessary to apply rotational force to the multiple bidirectional screw rods 304 in sequence, which makes the overall assembly time-consuming. In order to effectively solve this problem, Figure 1 andFigure 7 As shown, on the basis of the limiting mechanism 300, a rotating structure 400 is additionally provided. Among them, the rotating structure 400 includes two extension rods arranged vertically on the surface of the rod body assembly 301. A vertical rod body 401 is rotatably connected between the two extension rods. A first gear ring 402 is fixedly sleeved on the middle of several bidirectional lead screws 304. A plurality of second gear rings 403 meshed with the first gear ring 402 through tooth grooves are fixedly sleeved on the outer surface of the vertical rod body 401. By rotating the vertical rod body 401, it can drive a plurality of second gear rings 403 to rotate synchronously, and cooperate with the first gear ring 402 to drive several bidirectional lead screws 304 to rotate synchronously, so as to adjust the distance between two slider rings 305 on several bidirectional lead screws 304 synchronously, effectively ensuring the unity when several limiting rings 303 are combined with several solid columns 302 and the positioning cylinder 1053, and improving the efficiency at the same time.

[0051] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A rotary brush for surface polishing of mechanical parts, characterized in that, Comprising: A single - loop brush group (100), the number of which is several, and the upper single - loop brush group (100) is connected step by step through its tail end to the head end of the lower single - loop brush group (100) to form a continuous spiral arrangement structure; A connecting ring (200), arranged outside the spiral arrangement structure formed by several single - loop brush groups (100); A limiting mechanism (300), installed on the connecting ring (200) and inserted and combined with several single - loop brush groups (100); A rotating structure (400), installed on the limiting mechanism (300) and used to synchronously adjust the combined state between the limiting mechanism (300) and several single - loop brush groups (100); Among them, the single - loop brush group (100) includes a brush tube (101) arranged in a spiral shape and a brush hair cluster (102) embedded in the brush tube (101). A spiral strip (103) is integrally connected to the outer surface of the brush tube (101). A groove (104) is opened at the tail end of the spiral strip (103). One end at the top of the spiral strip (103) is connected with an embedded structure (105) for mutually engaging with the groove (104) in the upper - side spiral strip (103).

2. A rotary brush for surface polishing of mechanical parts according to claim 1, characterized in that: The groove (104) includes a propulsion cavity (1041) that is narrow at the top and wide at the bottom, a thin - strip cavity (1042) that communicates with both sides in the middle of the propulsion cavity (1041), and a reserved cavity (1043) that communicates with the bottom at one end of the propulsion cavity (1041); The lengths of the propulsion cavity (1041) and the thin - strip cavity (1042) are 1 / 4 of the length of the single - loop brush group (100).

3. The rotary brush for surface polishing of mechanical parts according to claim 2, characterized in that: The embedded structure (105) includes an arc - shaped strip (1051) with the same shape as the propulsion cavity (1041). When the arc - shaped strip (1051) is squeezed into the groove (104), the gap between it and the groove (104) is between 1 mm and 2 mm. Memory metal strips (1052) that fit the thin - strip cavity (1042) are adhesively bonded to both sides in the middle of the arc - shaped strip (1051); The material of the arc - shaped strip (1051) is any one of rubber and silica gel.

4. A rotary brush for surface polishing of mechanical parts according to claim 3, characterized in that: A positioning cylinder (1053) is installed at the top of one end of the arc - shaped strip (1051). A limiting piece (1054) with the same shape as the reserved cavity (1043) is arranged below one end of the arc - shaped strip (1051). A notch with the same shape and size as the limiting piece (1054) is opened at the bottom of the arc - shaped strip (1051). A spring structure (1055) passing through the arc - shaped strip (1051) is connected between the top of the limiting piece (1054) and the top wall of the positioning cylinder (1053). A dial plate (1056) is arranged at the top of the positioning cylinder (1053). A pull rod (1057) that passes through the positioning cylinder (1053), the arc - shaped strip (1051) in sequence and is connected to the top of the limiting piece (1054) is installed at the bottom of the dial plate (1056).

5. A rotary brush for surface polishing of mechanical parts according to claim 1, characterized in that: The limiting mechanism (300) includes a rod body assembly (301) fixedly inserted on the connecting ring (200). Solid columns (302) are installed at the bottoms of a plurality of spiral strips (103), and the diameter thereof is consistent with the outer diameter of the positioning cylinder (1053). Limiting rings (303) are movably sleeved on the outer surfaces of the positioning cylinders (1053). A plurality of bidirectional lead screws (304) arranged vertically are rotatably installed on the rod body assembly (301). Slide rings (305) for controlling the distance between two limiting rings (303) are sleeved on the outer surfaces of the bidirectional lead screws (304) through threads.

6. The rotary brush for surface polishing of mechanical parts according to claim 5, characterized in that: The rod body assembly (301) includes a plurality of guiding structures (3011) arranged on the side of the bidirectional lead screw (304) away from the single-turn brush group (100). A shaft rod (3012) rotatably connected to the bidirectional lead screw (304) is installed on the guiding structure (3011). Two guiding rings (3013) integrally connected with the slide ring (305) are slidably sleeved on the guiding structure (3011).

7. A rotary brush for surface polishing of mechanical parts according to claim 1, characterized in that: The rotating structure (400) includes two extension rods installed on the surface of the rod body assembly (301) and arranged vertically. A vertical rod body (401) is rotatably connected between the two extension rods. Gear rings one (402) are fixedly sleeved in the middles of a plurality of bidirectional lead screws (304). A plurality of gear rings two (403) meshed with the gear rings one (402) through tooth grooves are fixedly sleeved on the outer surface of the vertical rod body (401).

8. A rotary brush for surface polishing of mechanical parts according to claim 7, characterized in that: The height difference between the bottom of the solid column (302) and the connection points of the bidirectional lead screw (304) and the shaft rod (3012) is greater than the height of the solid column (302). The height of the solid column (302) is equal to the sum of the heights of the positioning cylinder (1053) and the dial plate (1056). The materials of the solid column (302), the positioning cylinder (1053), and the dial plate (1056) are any one of hard plastics and metals.

Images