An abrasive flow polishing apparatus for polishing a screw

Abstract

A kind of abrasive flow polishing device for screw polishing, including base, inner rotary polishing device, be arranged on base, with base sliding connection, for abrasive flow polishing to the screw to be processed, transmission, be arranged on the side of base, with inner rotary polishing device is connected, for driving inner rotary polishing device moves along the length direction of base, positioning clamping device, be arranged on base, located in the both ends of inner rotary polishing device, for fixed screw to be processed;Compared with prior art, by positioning clamping device to fixed screw to be processed, transmission drives inner rotary polishing device reciprocating motion along the axis direction of screw to be processed, inner rotary polishing device is polished to the surface of the screw to be processed passing therein, avoid screw polishing part and contact with external environment, reduce the dust overflow generated in polishing process.

Description

Technical Field

[0001] This invention relates to the field of screw polishing technology, and more specifically to an abrasive flow polishing device for screw polishing. Background Technology

[0002] As a core component of some mechanical equipment, research has found that when viscoelastic materials are extruded through a helical surface, the surface roughness of the helical surface affects the slip characteristics of the material. When the surface roughness is less than 0.8 μm after hardening treatment, it not only improves extrusion efficiency but also helps to extend the service life of the screw. Therefore, improving the surface roughness and surface quality of the screw has become an important research topic in engineering machinery. Polishing is a commonly used processing method to improve the surface precision and smoothness of the screw. By polishing the screw surface, the precision and smoothness of the screw surface can be improved, thereby enhancing the screw's performance and lifespan.

[0003] The existing screw polishing methods mainly involve direct external polishing with a grinding belt, which generates a large amount of dust during the polishing process and can easily cause environmental pollution.

[0004] Therefore, it is necessary to improve upon the above-mentioned issues. Summary of the Invention

[0005] To address the above shortcomings, the technical problem to be solved by the present invention is to provide an abrasive flow polishing device for screw polishing, so as to avoid the dust generated during the screw polishing process from entering the external environment and causing environmental pollution.

[0006] To solve the above technical problems, the technical solution adopted by the present invention is: an abrasive flow polishing device for screw polishing, comprising a base; an internal rotation polishing device disposed on the base and slidably connected to the base, used for abrasive flow polishing of the screw to be processed; a transmission device disposed on one side of the base and connected to the internal rotation polishing device, used to drive the internal rotation polishing device to move along the length direction of the base; and a positioning and clamping device disposed on the base and located at both ends of the internal rotation polishing device, used to fix the screw to be processed.

[0007] As a preferred embodiment of the present invention, it also includes an abrasive recovery device, which is arranged below the internal rotary polishing device and is used to collect the abrasive after polishing.

[0008] As a preferred embodiment of the present invention, two slide rails are provided on the base, and the two slide rails are symmetrically arranged along the length of the base, and the internal rotation polishing device is slidably assembled on the slide rails.

[0009] As a preferred embodiment of the present invention, the transmission device includes a transmission screw, a transmission motor, a coupling, and two support fixing blocks; the two support fixing blocks are respectively arranged at both ends of the transmission screw and fixedly connected to the base; the coupling is arranged on the transmission motor, and the end of the transmission screw adjacent to the transmission motor passes through the support fixing block and is connected to the coupling, and the transmission motor drives the transmission screw to rotate through the coupling.

[0010] As a preferred embodiment of the present invention, the transmission device further includes a transmission support rod; the transmission support rod is arranged parallel to the transmission screw, and both ends of the transmission support rod are respectively connected to two support fixing blocks.

[0011] As a preferred embodiment of the present invention, the internal rotary polishing device includes a feeding mechanism, an internal rotary polishing mechanism, a driving mechanism, and a base plate; both the feeding mechanism and the internal rotary polishing mechanism are fixed on the base plate, and the driving mechanism is disposed on the internal rotary polishing mechanism; the driving mechanism includes a driving motor and a transmission pulley set, one end of the transmission pulley set is connected to the driving motor, and the other end is connected to the internal rotary polishing mechanism; a discharge port is formed on one side of the feeding mechanism, and a feed port is formed on one side of the internal rotary polishing mechanism, and the discharge port is connected to the feed port.

[0012] As a preferred embodiment of the present invention, the internal rotation polishing mechanism includes a sleeve fixing member, a first polishing sleeve, and a second polishing sleeve; the second polishing sleeve is fitted inside the first polishing sleeve, and the first polishing sleeve is fitted inside the sleeve fixing member; one end of the first polishing sleeve extends outward and engages with the transmission pulley assembly; a plurality of first fixing connection holes are formed on the first polishing sleeve, and a plurality of second fixing connection holes are formed on the second polishing sleeve, with the first fixing connection holes and the second fixing connection holes being correspondingly arranged.

[0013] As a preferred embodiment of the present invention, a plurality of first feed ports are formed on the first polishing sleeve, and the plurality of first feed ports are evenly distributed along the circumferential direction of the first polishing sleeve; a plurality of second feed ports are formed on the second polishing sleeve, and a plurality of abrasive receiving grooves are formed on the inner wall of the second polishing sleeve, and the plurality of second feed ports and the plurality of abrasive receiving grooves are evenly distributed along the circumferential direction of the second polishing sleeve.

[0014] As a preferred embodiment of the present invention, a transmission connecting plate is formed on the base plate, and the transmission connecting plate has a transmission threaded hole that cooperates with the transmission screw and a transmission support hole that cooperates with the transmission support rod.

[0015] As a preferred embodiment of the present invention, the positioning and clamping device includes a first hand-cranked positioning slide, a second hand-cranked positioning slide, and two clamping sleeves; the first hand-cranked positioning slide and the second hand-cranked positioning slide are respectively arranged at both ends of the base, and the two clamping sleeves are respectively arranged on the first hand-cranked positioning slide and the second hand-cranked positioning slide.

[0016] Compared with the prior art, the beneficial effects of the present invention are: the positioning and clamping device fixes the screw to be processed, the transmission device drives the internal rotating polishing device to reciprocate along the axis of the screw to be processed, and the internal rotating polishing device polishes the surface of the screw to be processed that passes through it, thereby avoiding contact between the polished part of the screw and the external environment and reducing the dust overflow generated during the polishing process. Attached Figure Description

[0017] Figure 1 This application provides a schematic diagram of the structure of an abrasive flow polishing device for screw polishing. Figure 2 This is a schematic diagram of the internal rotary polishing device provided in the embodiments of this application; Figure 3 This is a schematic diagram of the feeding mechanism provided in the embodiments of this application; Figure 4 This is a schematic diagram of the internal rotation polishing mechanism provided in the embodiments of this application; Figure 5 A cross-sectional view of the internal rotary polishing mechanism provided in an embodiment of this application; Figure 6 This is a schematic diagram of the structure of the first polishing sleeve provided in an embodiment of this application; Figure 7 This is a schematic diagram of the structure of the second polishing sleeve provided in an embodiment of this application; Figure 8 A schematic diagram of the drive mechanism provided in the embodiments of this application; Figure 9 This is a schematic diagram of the transmission device provided in the embodiments of this application; Figure 10 This is a schematic diagram of the installation of the positioning and clamping device provided in the embodiments of this application; Reference numerals: Base 1, Slide rail 1-1, Internal rotary polishing device 2, Feeding mechanism 2-1, Discharge port 2-11, Internal rotary polishing mechanism 2-2, Inlet port 2-21, Sleeve fixing component 2-22, First polishing sleeve 2-23, First fixed connection hole 2-231, First inlet port 2-232, Second polishing sleeve 2-24, Second fixed connection hole 2-241, Second inlet port 2-242, Abrasive receiving groove 2-243, Drive mechanism 2 -3, drive motor 2-31, transmission pulley set 2-32, base plate 2-4, transmission connecting plate 2-41, transmission threaded hole 2-411, transmission support hole 2-412, transmission device 3, transmission screw 3-1, transmission motor 3-2, coupling 3-3, support fixing block 3-4, transmission support rod 3-5, positioning and clamping device 4, first hand-cranked positioning slide 4-1, second hand-cranked positioning slide 4-2, clamping sleeve 4-3, abrasive recovery device 5. Detailed Implementation

[0018] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0019] The following description provides examples and does not limit the scope, applicability, or examples set forth in the claims. Changes may be made to the function and arrangement of the described elements without departing from the scope of this application. Various processes or components may be appropriately omitted, substituted, or added to the examples. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Furthermore, features described with respect to some examples may be combined into other examples.

[0020] Please see Figure 1 , Figure 1 This illustration shows a schematic diagram of an abrasive flow polishing apparatus for screw polishing according to an embodiment of this application. Figure 1 As shown, an abrasive flow polishing device for screw polishing includes a base 1, an internal rotary polishing device 2 disposed on the base 1 and slidably connected to the base 1, used for abrasive flow polishing of the screw to be processed; a transmission device 3 disposed on one side of the base 1 and connected to the internal rotary polishing device 2, used to drive the internal rotary polishing device 2 to move along the length direction of the base 1; and a positioning and clamping device 4 disposed on the base 1 and located at both ends of the internal rotary polishing device 2, used to fix the screw to be processed.

[0021] Specifically, the operator adjusts the transmission device 3 to the initial working position, then passes the screw to be processed through the internal rotary polishing device 2, adjusts the positioning clamping device 4, and fixes the screw to be processed on the positioning clamping device 4; after clamping, the operator adds a certain amount of abrasive to the internal rotary polishing device 2, and starts the internal rotary polishing device 2 and the transmission device 3. The internal rotary polishing device 2 polishes the surface of the screw to be processed passing through it, and the transmission device 3 drives the internal rotary polishing device 2 to reciprocate along the length direction of the base 1 to polish the remaining surface of the screw to be processed.

[0022] As an optional embodiment of this application, it also includes an abrasive recovery device 5, which is arranged below the internal rotary polishing device 2 and is used to collect the polished abrasive.

[0023] like Figure 1 As shown, specifically, the abrasive recovery device 5 covers the entire working stroke area of ​​the screw to be processed, and recovers the abrasive that has been processed in the internal rotary polishing device 2, preventing the abrasive from falling into the non-processing area and causing the processing site environment to be unclean; at the same time, it reduces the pollution of the recovered abrasive and facilitates the recycling of the abrasive.

[0024] As an optional embodiment of this application, two slide rails 1-1 are arranged on the base 1, and the two slide rails 1-1 are symmetrically arranged along the length direction of the base 1. The internal rotation polishing device 2 is slidably assembled on the slide rails 1-1.

[0025] like Figure 1 As shown, specifically, the frictional resistance between the internal rotary polishing device 2 and the base 1 is reduced by the slide rail 1-1, which facilitates the transmission device 3 to drive the internal rotary polishing device 2 to move along the length direction of the base 1, thereby polishing the surface of the screw to be processed along the axis of the screw to be processed.

[0026] As an optional embodiment of this application, the transmission device 3 includes a transmission screw 3-1, a transmission motor 3-2, a coupling 3-3, and two support fixing blocks 3-4; the two support fixing blocks 3-4 are respectively arranged at both ends of the transmission screw 3-1 and fixedly connected to the base 1; the coupling 3-3 is disposed on the transmission motor 3-2, and the end of the transmission screw 3-1 adjacent to the transmission motor 3-2 passes through the support fixing block 3-4 and is connected to the coupling 3-3, and the transmission motor 3-2 drives the transmission screw 3-1 to rotate through the coupling 3-3.

[0027] like Figure 9 As shown, specifically, the two support fixing blocks 3-4 provide radial support and axial limit for the transmission screw 3-1 connected to them. Bearings are provided at the connection between the transmission screw 3-1 and the two support fixing blocks 3-4 to reduce the frictional resistance between the transmission screw 3-1 and the two support fixing blocks 3-4.

[0028] As an optional embodiment of this application, the transmission device 3 further includes a transmission support rod 3-5; the transmission support rod 3-5 is arranged parallel to the transmission screw 3-1, and both ends of the transmission support rod 3-5 are respectively connected to two support fixing blocks 3-4.

[0029] like Figure 9 As shown, specifically, bearings are provided at the connection between the transmission support rod 3-5 and the two support fixing blocks 3-4; the transmission support rod 3-5 enhances the working strength of the transmission screw 3-1 located between the two support fixing blocks 3-4, reduces the vibration generated when the transmission screw 3-1 rotates, and makes the process of driving the internal rotary polishing device 2 through the transmission device 3 more stable, thereby ensuring the stability of the polishing operation.

[0030] As an optional embodiment of this application, the internal rotary polishing device 2 includes a feeding mechanism 2-1, an internal rotary polishing mechanism 2-2, a driving mechanism 2-3, and a base plate 2-4; the feeding mechanism 2-1 and the internal rotary polishing mechanism 2-2 are both fixed on the base plate 2-4, and the driving mechanism 2-3 is disposed on the internal rotary polishing mechanism 2-2; the driving mechanism 2-3 includes a driving motor 2-31 and a transmission pulley set 2-32, one end of the transmission pulley set 2-32 is connected to the driving motor 2-31, and the other end is connected to the internal rotary polishing mechanism 2-2; a discharge port 2-11 is formed on one side of the feeding mechanism 2-1, and a feed port 2-21 is formed on one side of the internal rotary polishing mechanism 2-2, and the discharge port 2-11 is connected to the feed port 2-21.

[0031] like Figure 2 , Figure 3 and Figure 4 As shown, specifically, the feeding mechanism 2-1 can be a forced feeder. The feeding mechanism 2-1 is used to provide the abrasive required for polishing the screw to be processed by the internal rotary polishing mechanism 2-2. The operator adds a certain amount of abrasive to the feeding mechanism 2-1 in advance. The feeding mechanism 2-1 controls the abrasive to enter the inlet 2-21 of the internal rotary polishing mechanism 2-2 from the outlet of the feeding mechanism 2-1, eliminating the manual feeding step and ensuring uniform feeding during the polishing process. The drive motor 2-31 provides power input to the internal rotary polishing mechanism 2-2 through the transmission pulley set 2-32, so that the internal rotary polishing mechanism 2-2 can generate relative movement with the screw to be processed passing through it, so as to polish the screw to be processed.

[0032] As an optional embodiment of this application, the internal rotation polishing mechanism 2-2 includes a sleeve fixing member 2-22, a first polishing sleeve 2-23, and a second polishing sleeve 2-24; the second polishing sleeve 2-24 is fitted inside the first polishing sleeve 2-23, and the first polishing sleeve 2-23 is fitted inside the sleeve fixing member 2-22; one end of the first polishing sleeve 2-23 extends outward and engages with the transmission pulley group 2-32; a plurality of first fixing connection holes 2-231 are formed on the first polishing sleeve 2-23, and a plurality of second fixing connection holes 2-241 are formed on the second polishing sleeve 2-24, with the first fixing connection holes 2-231 and the second fixing connection holes 2-241 correspondingly arranged.

[0033] like Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, specifically, the second fixed connection hole 2-241 on the second polishing sleeve 2-24 is aligned with the first fixed connection hole 2-231 on the first polishing sleeve 2-23. The first polishing sleeve 2-23 and the second polishing sleeve 2-24 are fixedly assembled by screws. When the drive motor 2-31 drives the first polishing sleeve 2-23 connected to the transmission pulley group 2-32 to rotate through the transmission pulley group 2-32, the first polishing sleeve 2-23 synchronously drives the second polishing sleeve 2-24 to rotate. At this time, the screw to be processed is fixed, and relative movement occurs between the second polishing sleeve 2-24 and the screw to be processed, so that the abrasive in the second polishing sleeve 2-24 can polish the surface of the screw to be processed.

[0034] Furthermore, when the first polishing sleeve 2-23 or the second polishing sleeve 2-24 wears out, the first polishing sleeve 2-23 or the second polishing sleeve 2-24 can be replaced separately to reduce maintenance costs.

[0035] As an optional embodiment of this application, a plurality of first feed ports 2-232 are formed on the first polishing sleeve 2-23, and the plurality of first feed ports 2-232 are evenly distributed along the circumferential direction of the first polishing sleeve 2-23; a plurality of second feed ports 2-242 are formed on the second polishing sleeve 2-24, and a plurality of abrasive receiving grooves 2-243 are formed on the inner wall of the second polishing sleeve 2-24, and the plurality of second feed ports 2-242 and the plurality of abrasive receiving grooves 2-243 are all evenly distributed along the circumferential direction of the second polishing sleeve 2-24.

[0036] like Figure 6 and Figure 7 As shown, specifically, the first feed port 2-232, the second feed port 2-242, and the feed port 2-21 provided on the sleeve fixing member 2-22 are interconnected. The abrasive provided by the feeding mechanism 2-1 passes through the first feed port 2-232 from the feed port 2-21 into the second feed port 2-242 and is distributed in multiple abrasive receiving grooves 2-243 on the inner wall of the second polishing sleeve 2-24. When the first polishing sleeve 2-23 and the second polishing sleeve 2-24 rotate around the axis under the drive of the driving mechanism 2-3, the abrasive in the abrasive receiving grooves 2-243 polishes the surface of the screw to be processed under the action of rotation.

[0037] As an optional embodiment of this application, a transmission connecting plate 2-41 is formed on the base plate 2-4, and the transmission connecting plate 2-41 has a transmission threaded hole 2-411 that cooperates with the transmission screw 3-1 and a transmission support hole 2-412 that cooperates with the transmission support rod 3-5.

[0038] like Figure 2As shown, specifically, the transmission screw 3-1 passes through the transmission threaded hole 2-411 and is threadedly connected to it. When the transmission motor 3-2 drives the transmission screw 3-1 to rotate in the circumferential direction, the transmission screw 3-1 converts its circumferential rotational motion into linear motion of the internal rotation polishing device 2 along the length of the base 1 through the transmission threaded hole 2-411. This allows the internal rotation polishing mechanism 2-2 to move along the axial direction of the screw to be processed, thereby polishing the entire surface of the screw. The transmission support rod 3-5 passes through the transmission support hole 2-412 and is parallel to the transmission screw 3-1. Both ends of the transmission support rod 3-5 are connected to two support fixing blocks 3-4, increasing the stability of the entire transmission process of the transmission device 3.

[0039] As an optional embodiment of this application, the positioning and clamping device 4 includes a first hand-cranked positioning slide 4-1, a second hand-cranked positioning slide 4-2, and two clamping sleeves 4-3; the first hand-cranked positioning slide 4-1 and the second hand-cranked positioning slide 4-2 are respectively arranged at both ends of the base 1, and the two clamping sleeves 4-3 are respectively arranged on the first hand-cranked positioning slide 4-1 and the second hand-cranked positioning slide 4-2.

[0040] like Figure 10 As shown, specifically, when fixing the screw to be processed, one end of the screw to be processed is fixed to the clamping sleeve 4-3 on the second hand-cranked positioning slide 4-2; then, the first hand-cranked positioning slide 4-1 is moved along the length direction of the base, and the distance between the first hand-cranked positioning slide 4-1 and the second hand-cranked positioning slide 4-2 is adjusted so that the length of the screw to be processed is equal to the distance between the first hand-cranked positioning slide 4-1 and the second hand-cranked positioning slide 4-2; then, the first hand-cranked positioning slide 4-1 is moved along the width direction of the base so that the clamping sleeve 4-3 on the first hand-cranked positioning slide 4-1 is opposite to the clamping sleeve 4-3 on the second hand-cranked positioning slide 4-2, and the other end of the screw to be processed is fixed to the clamping sleeve 4-3 on the first hand-cranked positioning slide 4-1.

[0041] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention; therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0042] Although this paper makes extensive use of the reference numerals in the figures: base 1, slide rail 1-1, internal rotary polishing device 2, feeding mechanism 2-1, discharge port 2-11, internal rotary polishing mechanism 2-2, inlet port 2-21, sleeve fixing component 2-22, first polishing sleeve 2-23, first fixed connection hole 2-231, first inlet port 2-232, second polishing sleeve 2-24, second fixed connection hole 2-241, second inlet port 2-242, abrasive receiving groove 2-243, drive mechanism 2-3. The terms used include drive motor 2-31, transmission pulley set 2-32, base plate 2-4, transmission connecting plate 2-41, transmission threaded hole 2-411, transmission support hole 2-412, transmission device 3, transmission screw 3-1, transmission motor 3-2, coupling 3-3, support fixing block 3-4, transmission support rod 3-5, positioning clamping device 4, first hand-cranked positioning slide 4-1, second hand-cranked positioning slide 4-2, clamping sleeve 4-3, abrasive recovery device 5, etc., but the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of the invention; interpreting them as any additional limitation would contradict the spirit of the invention.

Claims

1. An abrasive flow polishing device for screw polishing, characterized in that, include abutment(1); An internal rotary polishing device (2) is arranged on a base (1) and is slidably connected to the base (1) for abrasive flow polishing of the screw to be processed; The transmission device (3) is arranged on one side of the base (1) and connected to the internal rotary polishing device (2) to drive the internal rotary polishing device (2) to move along the length of the base (1); The positioning and clamping device (4) is arranged on the base (1) and located at both ends of the internal rotary polishing device (2) to fix the screw to be processed; The internal rotary polishing device (2) includes a feeding mechanism (2-1), an internal rotary polishing mechanism (2-2), a driving mechanism (2-3), and a base plate (2-4). The feeding mechanism (2-1) and the internal rotary polishing mechanism (2-2) are both fixed on the base plate (2-4), and the drive mechanism (2-3) is set on the internal rotary polishing mechanism (2-2). The drive mechanism (2-3) includes a drive motor (2-31) and a transmission pulley set (2-32). One end of the transmission pulley set (2-32) is connected to the drive motor (2-31) and the other end is connected to the internal rotary polishing mechanism (2-2). The feeding mechanism (2-1) has a discharge port (2-11) on one side, and the internal rotary polishing mechanism (2-2) has a feed port (2-21) on one side. The discharge port (2-11) and the feed port (2-21) are connected. The internal rotation polishing mechanism (2-2) includes a sleeve fixing member (2-22), a first polishing sleeve (2-23), and a second polishing sleeve (2-24); The second polishing sleeve (2-24) is fitted inside the first polishing sleeve (2-23), and the first polishing sleeve (2-23) is fitted inside the sleeve fixing member (2-22); one end of the first polishing sleeve (2-23) extends outward and engages with the transmission pulley group (2-32); The first polishing sleeve (2-23) has a plurality of first fixing connection holes (2-231), and the second polishing sleeve (2-24) has a plurality of second fixing connection holes (2-241). The first fixing connection holes (2-231) and the second fixing connection holes (2-241) are provided correspondingly. The first polishing sleeve (2-23) has a plurality of first feed ports (2-232) formed thereon, and the plurality of first feed ports (2-232) are evenly distributed along the circumferential direction of the first polishing sleeve (2-23); Multiple second feed ports (2-242) are formed on the second polishing sleeve (2-24), and multiple abrasive receiving grooves (2-243) are formed on the inner wall of the second polishing sleeve (2-24). The multiple second feed ports (2-242) and multiple abrasive receiving grooves (2-243) are evenly distributed along the circumferential direction of the second polishing sleeve (2-24).

2. The abrasive flow polishing device for screw polishing according to claim 1, characterized in that, It also includes an abrasive recovery device (5), which is located below the internal rotary polishing device (2) and is used to collect the abrasive after polishing.

3. An abrasive flow polishing device for screw polishing according to claim 1 or 2, characterized in that, Two slide rails (1-1) are arranged on the base (1). The two slide rails (1-1) are symmetrically arranged along the length of the base (1). The internal rotating polishing device (2) is slidably assembled on the slide rails (1-1).

4. An abrasive flow polishing device for screw polishing according to claim 1 or 2, characterized in that, The transmission device (3) includes a transmission screw (3-1), a transmission motor (3-2), a coupling (3-3), and two support fixing blocks (3-4); the two support fixing blocks (3-4) are respectively arranged at both ends of the transmission screw (3-1) and fixedly connected to the base (1); The coupling (3-3) is mounted on the drive motor (3-2). The end of the drive screw (3-1) adjacent to the drive motor (3-2) passes through the support fixing block (3-4) and is connected to the coupling (3-3). The drive motor (3-2) drives the drive screw (3-1) to rotate through the coupling (3-3).

5. The abrasive flow polishing device for screw polishing according to claim 4, characterized in that, The transmission device (3) also includes a transmission support rod (3-5); the transmission support rod (3-5) is arranged parallel to the transmission screw (3-1), and both ends of the transmission support rod (3-5) are connected to two support fixing blocks (3-4) respectively.

6. The abrasive flow polishing device for screw polishing according to claim 1, characterized in that, A transmission connecting plate (2-41) is formed on the base plate (2-4). The transmission connecting plate (2-41) has a transmission threaded hole (2-411) that cooperates with the transmission screw (3-1) and a transmission support hole (2-412) that cooperates with the transmission support rod (3-5).

7. An abrasive flow polishing apparatus for screw polishing according to claim 1 or 2, characterized in that, The positioning and clamping device (4) includes a first hand-cranked positioning slide (4-1), a second hand-cranked positioning slide (4-2), and two clamping sleeves (4-3); the first hand-cranked positioning slide (4-1) and the second hand-cranked positioning slide (4-2) are respectively arranged at both ends of the base (1), and the two clamping sleeves (4-3) are respectively arranged on the first hand-cranked positioning slide (4-1) and the second hand-cranked positioning slide (4-2).

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