Surface polishing equipment and method for mechanical part machining
By introducing a waterproof dual-axis output motor and a swing unit into the surface polishing equipment for mechanical parts processing, the problem of uneven polishing of the inner and outer sides of the cylinder mechanical parts is solved, and the uniform flow of the polishing liquid and the removal of reaction products are achieved to ensure polishing uniformity and efficiency.
Patent Information
- Application Number
- CN202510889673.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-30
- Publication Date
- 2025-08-19
AI Technical Summary
The inner space of the cylinder mechanical parts is small, the flow rate of chemical polishing liquid is slow, and the reaction products generated by polishing accumulate on the inner wall and are difficult to discharge, resulting in inconsistent polishing rates on the inner and outer sides and uneven polishing.
The surface polishing equipment for processing mechanical parts including polishing units, uniform flow units and swing units is adopted. The waterproof dual-axis output motor drives the rotary rod and uniform flow leaves to accelerate the flow of chemical polishing liquid, and combines the rocker arm and the fan gear to drive the swing action to ensure that the polishing liquid is uniformly exchanged on the inside and outside of the cylinder mechanical parts and removes the reaction products.
It effectively solves the problem of inconsistent polishing rates on the inner and outer sides of the cylinder mechanical parts, ensures polishing uniformity and shortens polishing time.
Smart Images
Figure CN120503117A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of mechanical parts polishing, and in particular to a surface polishing device and method for machining mechanical parts. Background Art
[0002] Mechanical parts are the most basic structural units that constitute mechanical systems. They have certain shapes, sizes, materials and processing precision. Various mechanical products are formed through processing and assembly. Cylindrical mechanical parts with open side walls are a subcategory of mechanical parts. They are widely used in mechanical systems, such as filter cylinders, mufflers and screening drums. These cylindrical mechanical parts with uniform holes on the side walls need to be polished with corresponding surface polishing equipment during the processing and polishing process.
[0003] Chemical polishing is a process that uses chemical solutions to selectively dissolve microscopic protrusions on the surface of a material to obtain a smooth surface. It does not require mechanical force and is suitable for complex shapes or precision parts. In fact, when using chemical polishing to polish cylindrical mechanical parts with multiple uniform holes on the side walls, this type of cylindrical mechanical parts is divided into two spaces inside and outside due to its unique structure. The inner space is narrow, the flow rate and exchange rate of the chemical polishing liquid are slow, and the reaction products produced by polishing accumulate on its inner wall and are difficult to discharge, resulting in inconsistent polishing rates on the inside and outside, and uneven polishing on both sides. Summary of the Invention
[0004] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of this application to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions should not be used to limit the scope of the present invention.
[0005] In view of the above problems existing in the existing surface polishing equipment and method for machining mechanical parts, the present invention is proposed.
[0006] Therefore, the purpose of the present invention is to provide a surface polishing device and method for machining mechanical parts, which is suitable for solving the problem that the inner space of cylindrical mechanical parts is narrow, the flow rate and exchange rate of chemical polishing liquid are slow, and the reaction products produced by polishing accumulate on the inner wall and are difficult to discharge, resulting in inconsistent polishing rates on the inside and outside, and uneven polishing on both sides.
[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a surface polishing device for machining mechanical parts, comprising: A polishing unit comprising a polishing pool and a cylindrical mechanical component disposed in the polishing pool; The flow uniforming unit includes a rocker arm and a waterproof dual-shaft output motor fixedly installed at the lower end of one side of the rocker arm. One end of the waterproof dual-shaft output motor passes through the rocker arm and is fixedly connected to a rotating rod arranged along the axis of the cylindrical mechanical component. Both ends of the rotating rod are fixedly connected to multiple groups of symmetrically positioned flow uniforming blades. The flow uniforming unit also includes a positioning and tightening assembly for supporting the cylindrical mechanical component.
[0008] As a preferred solution of the surface polishing equipment for machining mechanical parts described in the present invention, the polishing equipment also includes a swing unit, which includes a frame rod mounted on the upper end of the polishing pool, the upper end of the rocker arm is rotatably mounted on the frame rod, the upper part of one side of the rocker arm is rotatably connected to a rotating column, a fan-shaped gear is fixedly mounted on the rotating column, a circular gear meshing with the fan-shaped gear is rotatably mounted on the frame rod, and the circular gear is fixedly connected to the upper end of the rocker arm. The swing unit also includes a transmission component for transmitting power.
[0009] As a preferred solution of the surface polishing equipment for mechanical parts processing described in the present invention, the transmission assembly includes two transmission sprockets fixedly mounted on the other end of the waterproof dual-shaft output motor and another transmission sprocket fixedly mounted on the rotating column, and the two transmission sprockets are connected by a transmission chain.
[0010] As a preferred solution of the surface polishing equipment for processing mechanical parts described in the present invention, the positioning and tightening assembly includes a rotating sleeve rotatably mounted at the center of the rotating rod and a plurality of waterproof electric telescopic rods fixedly arranged on the outer wall of the rotating sleeve, and each of the waterproof electric telescopic rods is fixedly connected to a tightening plate that is against the inner wall of the cylindrical mechanical part at one end away from the shaft sleeve, and an anti-slip sleeve is fixedly connected to the rocker arm through a connecting column, and one end of the cylindrical mechanical part is clamped on the anti-slip sleeve.
[0011] As a preferred solution of the surface polishing equipment for machining mechanical parts described in the present invention, the outer side wall of each tightening plate is laterally provided with a plurality of groups of evenly distributed first tightening ribs, and the cross-section of each first tightening rib is set to be semicircular.
[0012] .A surface polishing device for machining mechanical parts according to claim, characterized in that: each outer side wall of the tightening plate is laterally provided with a plurality of groups of evenly distributed second tightening ribs, and each of the second tightening ribs is arranged into an isosceles trapezoid.
[0013] As a preferred solution of the surface polishing equipment for machining mechanical parts described in the present invention, the swing unit also includes a support assembly, and the support assembly includes two clamping sleeves symmetrically clamped at both ends of the polishing pool, and the upper end of each clamping sleeve is fixedly connected to a movable sleeve sliding with the two ends of the frame rod through the top of a manual telescopic rod, and the movable sleeve is threadedly connected to a positioning bolt that is against the frame rod.
[0014] As a preferred solution of the surface polishing equipment for machining mechanical parts described in the present invention, the frame rod is provided with a locking groove matching the positioning bolt, and each of the positioning bolts passes through the movable sleeve and abuts against the inner wall of the locking groove.
[0015] As a preferred solution of the surface polishing equipment for machining mechanical parts described in the present invention, the rocker arm is provided with symmetrically positioned strip openings, and the rocker arm is made of austenitic stainless steel.
[0016] A surface polishing method for machining mechanical parts, based on any of the polishing equipment described above, comprising the following steps: S1: A cylindrical mechanical component that needs to be polished and has a hole in the side wall is placed on a rotating rod to position the cylindrical mechanical component; S2: Start the waterproof dual-axis output motor to drive the rotating rod to rotate, and the uniform flow blades mounted on it accelerate the flow rate of the polishing liquid in the cylindrical mechanical parts; S3: The transmission chain drives the rotating column to rotate through the transmission sprocket. The sector gear drives the rocker arm to swing during the process of meshing with the circular gear, accelerating the exchange rate of the polishing liquid inside and outside the cylindrical mechanical parts and shaking off the reaction products attached to the inner and outer walls of the cylindrical mechanical parts.
[0017] The beneficial effects of the present invention are as follows: when polishing a cylindrical mechanical part with multiple through holes on its side wall, the waterproof dual-axis output motor is started, which drives the uniform flow blade fixed on the rotating rod to rotate relative to the cylindrical mechanical part, thereby accelerating the flow rate of the chemical polishing liquid in the cylindrical mechanical part. At the same time, the flowing chemical polishing liquid also carries the reaction products adhering to the inner wall out of the cylindrical mechanical part, thereby ensuring that the inner wall of the cylindrical mechanical part can be continuously polished. This effectively solves the problem of inconsistent polishing rates on the inner and outer sides of the cylindrical mechanical part due to the narrow internal space of the cylindrical mechanical part and the slow flow rate of the chemical polishing liquid, which leads to uneven polishing on the inner and outer sides. The other output shaft of the waterproof dual-axis output motor indirectly drives the rotating column to rotate. The fan gear fixed on the rotating column will first drive the rocker arm and the cylindrical mechanical parts to swing toward one side around the frame rod in the process of following the rotation of the rotating column. When the fan gear is no longer engaged with the circular gear, the rocker arm and the cylindrical mechanical parts will be reset downward due to their own gravity, thereby realizing the up and down swinging of the cylindrical mechanical parts in the polishing liquid. While ensuring that the polishing liquid flows axially along the cylindrical mechanical parts, the polishing liquid on the outside can be poured into the inside of the cylindrical mechanical parts through the through holes opened on the side walls, further accelerating the exchange rate of the polishing liquid inside and outside. At the same time, this swinging method further accelerates the accumulation and shedding of reaction products attached to the inner and outer walls, thereby shortening the time required for polishing the cylindrical mechanical parts. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort. Among them: Figure 1 This is a schematic diagram of the overall structure of a surface polishing device for machining mechanical parts proposed by the present invention; Figure 2 This is a schematic diagram of the coordination structure of a frame rod, a cylindrical mechanical part and a rotating rod of a surface polishing device for machining mechanical parts proposed by the present invention; Figure 3 This is a schematic diagram of the structure of a uniform flow unit of a surface polishing device for machining mechanical parts proposed by the present invention; Figure 4 This is a schematic diagram of the coordination structure of a waterproof motor, rocker arm and transmission sprocket of a surface polishing device for machining mechanical parts proposed by the present invention; Figure 5 This is a schematic structural diagram of a positioning and tightening assembly of a surface polishing device for machining mechanical parts proposed by the present invention; Figure 6 This is a schematic diagram of the structure of the anti-slip sleeve and the cylindrical mechanical parts of a surface polishing device for machining mechanical parts proposed by the present invention; Figure 7 This is a schematic diagram of the cross-sectional structure of a cylindrical mechanical part of a surface polishing device for machining mechanical parts proposed by the present invention; Figure 8 This is a schematic diagram of the cooperation structure between the second tightening rib and the tightening plate of a surface polishing device for machining mechanical parts proposed by the present invention.
[0019] Description of the drawings: 100 polishing unit, 101 polishing pool, 102 cylindrical mechanical parts, 200 uniform flow unit, 201 rocker arm, 202 waterproof dual-axis output motor, 203 rotating rod, 204 uniform flow blade, 205 positioning and tightening assembly, 205a rotating sleeve, 205b waterproof electric telescopic rod, 205c tightening plate, 205d first tightening rib, 205e second tightening rib, 205f connecting column, 205g anti-slip sleeve, 300 rocking unit, 301 rotating column, 302 fan gear, 303 frame rod, 304 circular gear, 305 transmission assembly, 305a transmission sprocket, 305b transmission chain, 306 support assembly, 306a clamping sleeve, 306b manual adjustment rod, 306c movable sleeve, 306d positioning bolt, 306e locking groove. DETAILED DESCRIPTION
[0020] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.
[0021] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0022] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments.
[0023] Furthermore, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, when describing the embodiments of the present invention, cross-sectional views illustrating device structures may be partially enlarged and not to scale. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, the three-dimensional dimensions of length, width, and depth should be included. Example
[0024] Reference Figures 1-8 , which is an embodiment of the present invention, provides a surface polishing device for machining mechanical parts, including: a polishing unit 100 and a flow uniforming unit 200.
[0025] The polishing unit 100 includes a polishing pool 101 and a cylindrical mechanical component 102 disposed in the polishing pool 101; The flow uniforming unit 200 includes a rocker arm 201 and a waterproof dual-axis output motor 202 fixedly installed at the lower end of one side of the rocker arm 201. The rocker arm 201 is provided with a symmetrical strip-shaped opening, and the rocker arm 201 is made of austenitic stainless steel. The setting of the strip-shaped opening ensures the strength of the rocker arm 201 while saving the production cost of the rocker arm 201. The austenitic stainless steel increases the service life of the rocker arm 201. One end of the waterproof dual-axis output motor 202 passes through the rocker arm 201 and is fixedly connected to a rotating rod 203 arranged along the axis of the cylindrical mechanical component 102. Multiple groups of symmetrical flow uniforming blades 204 are fixedly connected at both ends of the rotating rod 203. The flow uniforming unit 200 also includes a positioning and tightening assembly 205 for supporting the cylindrical mechanical component 102.
[0026] When it is necessary to polish a cylindrical mechanical component 102 with multiple through holes on its side wall, the cylindrical mechanical component 102 is sleeved on the rotating rod 203, and the positioning and tightening assembly 205 is used to support the cylindrical mechanical component 102. The waterproof dual-axis output motor 202 is started, which will drive the uniform flow blade 204 fixed on the rotating rod 203 to rotate relative to the cylindrical mechanical component 102, thereby accelerating the flow rate of the chemical polishing liquid in the cylindrical mechanical component 102. At the same time, the flowing chemical polishing liquid will also carry the reaction product accumulation attached to its inner wall out of the cylindrical mechanical component 102, ensuring that the inner wall of the cylindrical mechanical component 102 is subsequently polished continuously, effectively solving the problem of inconsistent polishing rates on the inside and outside of the cylindrical mechanical component 102 due to the small internal space of the cylindrical mechanical component 102 and the slow flow rate of the chemical polishing liquid, which in turn leads to uneven polishing on the inside and outside. Example
[0027] Reference Figure 1 、 3 and 4, which differs from Example 1 in that: the polishing equipment also includes a swing unit 300, which includes a frame rod 303 mounted on the upper end of the polishing pool 101, the upper end of the rocker arm 201 is rotatably mounted on the frame rod 303, and the upper part of one side of the rocker arm 201 is rotatably connected to a rotating column 301, a sector gear 302 is fixedly mounted on the rotating column 301, a circular gear 304 meshing with the sector gear 302 is rotatably mounted on the frame rod 303, and the circular gear 304 is fixedly connected to the upper end of the rocker arm 201. The swing unit 300 also includes a transmission component 305 for transmitting power.
[0028] The transmission assembly 305 includes two transmission sprockets 305a fixedly mounted on the other end of the waterproof dual-axis output motor 202 and another transmission sprocket 305a fixedly mounted on the rotating column 301. The two transmission sprockets 305a are connected by a transmission chain 305b.
[0029] When the other output shaft of the waterproof dual-axis output motor 202 drives the transmission sprocket 305a to rotate, the transmission sprocket 305a drives the rotating column 301 to rotate through the transmission chain 305b. The fan gear 302 fixedly mounted on the rotating column 301 will first drive the rocker arm 201 and the cylindrical mechanical component 102 to swing toward one side around the frame rod 303 as it rotates with the rotating column 301. When the fan gear 302 is no longer engaged with the circular gear 304, the rocker arm 201 and the cylindrical mechanical component 102 will return to their original position due to their own gravity, thereby causing the cylindrical mechanical component 102 to swing up and down in the polishing liquid. While ensuring that the polishing liquid flows axially along the cylindrical mechanical component 102, the polishing liquid on the outside of the cylindrical mechanical component 102 can be poured into the inside of the cylindrical mechanical component 102 through the through holes provided on the side wall of the cylindrical mechanical component 102, further accelerating the exchange rate of the polishing liquid between the inside and outside. At the same time, this swinging mode further accelerates the accumulation and shedding of reaction products attached to the inner and outer walls, thereby shortening the time required for polishing the cylindrical mechanical component.
[0030] The swing unit 300 also includes a support assembly 306, which includes two symmetrical clamping sleeves 306a symmetrically clamped at both ends of the polishing pool 101. The upper end of each clamping sleeve 306a is fixedly connected to a movable sleeve 306c sliding on both ends of the frame rod 303 through the top of a manual telescopic rod. The movable sleeve 306c is threadedly connected to a positioning bolt 306d that abuts against the frame rod 303. The frame rod 303 is provided with a locking groove 306e that matches the positioning bolt 306d. Each positioning bolt 306d passes through the movable sleeve 306c and abuts against the inner wall of the locking groove 306e. By configuring the movable sleeve 306c, the positioning bolt 306d and the clamping sleeve 306a, the swing unit 300 can be flexibly mounted on the polishing pool 101 and can also be flexibly disassembled from it. The manual telescopic rod 306b can flexibly adjust the depth of the tubular mechanical component 102 entering the liquid. Example
[0031] Reference Figure 5-7, which is different from the previous embodiment in that: the positioning and tightening assembly 205 includes a rotating sleeve 205a rotatably sleeved at the center of the rotating rod 203 and a plurality of waterproof electric telescopic rods 205b fixedly arranged on the outer wall of the rotating sleeve 205a. The waterproof electric telescopic rod 205b is a linear motion device driven by a motor and capable of automatic extension and contraction. It has waterproof and dustproof functions and is suitable for harsh environments such as humidity, outdoor or underwater. The waterproof electric telescopic rod 205b used in the present invention is model TEC-1000-IP68, with a waterproof grade of IP68 and a thrust of 600N. Because it is very mature in actual life and belongs to a very mature existing technology, its working principle will not be described in detail here. Each waterproof electric telescopic rod 2 The end of 05b away from the shaft sleeve is fixedly connected to a tightening plate 205c that is against the inner wall of the cylindrical mechanical component 102, and an anti-slip sleeve 205g is fixedly connected to the rocker arm 201 through a connecting column 205f. One end of the cylindrical mechanical component 203 is clamped on the anti-slip sleeve 205g. The waterproof electric telescopic rod 205b, the rotating sleeve 205a and the tightening plate 205c are used in conjunction with each other to support the cylindrical mechanical component 102 while ensuring that the rotating rod 203 rotates relative to the cylindrical mechanical component 102. The setting of the anti-slip sleeve 205g further ensures that the rotating rod 203 can drive the uniform flow blade 204 to rotate relative to the cylindrical mechanical component 102, so as to drive the chemical polishing liquid to flow along the axial direction of the cylindrical mechanical component 102.
[0032] The outer side wall of each tightening plate 205c is laterally provided with a plurality of groups of evenly distributed first tightening ribs 205d, and the cross-section of each first tightening rib 205d is arranged to be semicircular; through the arrangement of the first tightening ribs 205d, it is ensured that "strip-type flow channels" are reserved inside the tightening plate 205c and the cylindrical mechanical component 102 along the flow direction of the polishing liquid, thereby solving the defect that the cylindrical mechanical component 102 cannot be fully polished at the contact point with the tightening plate 205c. Example
[0033] Reference Figure 8 The difference from the previous embodiment is that: a plurality of groups of evenly distributed second tightening ribs 205e are laterally arranged on the outer side wall of each tightening plate 205c, and each second tightening rib 205e is arranged to be an isosceles trapezoid. The second tightening rib 205e with an isosceles trapezoidal cross-section has a large contact area with the cylindrical mechanical component 102 at one end away from the tightening plate 205c, and the tightening and positioning is stable. At the same time, the reserved multiple "strip-type flow channels" can meet the need for polishing of the cylindrical mechanical component 102 and the tightening plate 205c.
[0034] A surface polishing method for machining mechanical parts, comprising the following steps: S1: The cylindrical mechanical component 102 that needs to be polished and has a hole in the side wall is placed on the rotating rod 203 to position the cylindrical mechanical component 102; S2: The waterproof dual-axis output motor 202 is started to drive the rotating rod 203 to rotate, and the uniform flow blade 204 mounted thereon accelerates the flow rate of the polishing liquid in the cylindrical mechanical component 102; S3: The transmission chain 305b drives the rotating column 301 to rotate through the transmission sprocket 305a. The sector gear 302 drives the rocker arm 201 to swing during the process of meshing with the circular gear 304, thereby accelerating the exchange rate of the polishing liquid inside and outside the cylindrical mechanical component 102 and shaking off the reaction products attached to the inner and outer walls of the cylindrical mechanical component 102.
[0035] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.
Claims
1. A surface polishing device for machining mechanical parts, characterized in that: include: A polishing unit (100) comprising a polishing pool (101) and a cylindrical mechanical component (102) disposed in the polishing pool (101); A flow-uniform unit (200) comprises a rocker arm (201) and a waterproof dual-shaft output motor (202) fixedly mounted at the lower end of one side of the rocker arm (201), wherein one end of the waterproof dual-shaft output motor (202) passes through the rocker arm (201) and is fixedly connected to a rotating rod (203) arranged along the axis of the cylindrical mechanical component (102), wherein both ends of the rotating rod (203) are fixedly connected to a plurality of groups of symmetrically positioned flow-uniform blades (204), and the flow-uniform unit (200) further comprises a positioning and tightening assembly (205) for supporting the cylindrical mechanical component (102).
2. The surface polishing equipment for machining mechanical parts according to claim 1, characterized in that: The polishing device also includes a swing unit (300), which includes a frame rod (303) mounted on the upper end of the polishing pool (101), the upper end of the swing arm (201) is rotatably mounted on the frame rod (303), the upper part of one side of the swing arm (201) is rotatably connected to a rotating column (301), a fan-shaped gear (302) is fixedly mounted on the rotating column (301), a circular gear (304) meshing with the fan-shaped gear (302) is rotatably mounted on the frame rod (303), and the circular gear (304) is fixedly connected to the upper end of the swing arm (201). The swing unit (300) also includes a transmission component (305) for transmitting power.
3. The surface polishing equipment for machining mechanical parts according to claim 2, characterized in that: The transmission assembly (305) comprises two transmission sprockets (305a) fixedly mounted on the other end of the waterproof dual-shaft output motor (202) and another transmission sprocket (305a) fixedly mounted on the rotating column (301). The two transmission sprockets (305a) are connected in transmission via a transmission chain (305b).
4. The surface polishing equipment for machining mechanical parts according to claim 2, characterized in that: The positioning and tightening assembly (205) comprises a rotating sleeve (205a) rotatably sleeved at the center of the rotating rod (203) and a plurality of waterproof electric telescopic rods (205b) fixedly arranged on the outer wall of the rotating sleeve (205a), wherein one end of each waterproof electric telescopic rod (205b) away from the shaft sleeve is fixedly connected to a tightening plate (205c) that abuts against the inner wall of the cylindrical mechanical component (102), and an anti-slip sleeve (205g) is fixedly connected to the rocker arm (201) via a connecting column (205f), and one end of the cylindrical mechanical component (203) is clamped on the anti-slip sleeve (205g).
5. The surface polishing equipment for machining mechanical parts according to claim 4, characterized in that: The outer side wall of each tightening plate (205c) is laterally provided with a plurality of groups of evenly distributed first tightening ribs (205d), and the cross section of each first tightening rib (205d) is arranged to be semicircular.
6. The surface polishing equipment for machining mechanical parts according to claim 4, characterized in that: The outer side wall of each of the tightening plates (205c) is laterally provided with a plurality of groups of evenly distributed second tightening ribs (205e), and each of the second tightening ribs (205e) is arranged in an isosceles trapezoid.
7. The surface polishing equipment for machining mechanical parts according to claim 2, characterized in that: The swing unit (300) further includes a support assembly (306), the support assembly (306) including two clamping sleeves (306a) symmetrically mounted at both ends of the polishing pool (101), the upper end of each clamping sleeve (306a) being fixedly connected to a movable sleeve (306c) sliding with both ends of the frame rod (303) via the top end of a manual telescopic rod, and the movable sleeve (306c) being threadedly connected to a positioning bolt (306d) that abuts against the frame rod (303).
8. The surface polishing equipment for machining mechanical parts according to claim 7, characterized in that: The rack rod (303) is provided with a locking groove (306e) that matches the positioning bolt (306d), and each positioning bolt (306d) passes through the movable sleeve (306c) and abuts against the inner wall of the locking groove (306e).
9. The surface polishing equipment for machining mechanical parts according to claim 1, characterized in that: The rocker arm (201) is provided with symmetrically positioned strip-shaped openings, and the rocker arm (201) is made of austenitic stainless steel.
10. A surface polishing method for machining mechanical parts, based on the polishing equipment according to any one of claims 1 to 9, characterized in that: The polishing method comprises the following steps: S1: a cylindrical mechanical component (102) that needs to be polished and has a hole in the side wall is placed on a rotating rod (203) to position the cylindrical mechanical component (102); S2: starting the waterproof dual-axis output motor (202) to drive the rotating rod (203) to rotate, and the uniform flow blade (204) mounted thereon accelerates the flow rate of the polishing liquid in the cylindrical mechanical component (102); S3: The transmission chain (305b) drives the rotating column (301) to rotate through the transmission sprocket (305a), and the fan-shaped gear (302) drives the rocker arm (201) to swing during the process of meshing with the circular gear (304), thereby accelerating the exchange rate of the polishing liquid inside and outside the cylindrical mechanical component (102) and shaking off the reaction products attached to the inner and outer walls of the cylindrical mechanical component (102).