Internal rotation extrusion abrasive flow polishing device

Abstract

The internal rotation extrusion abrasive flow polishing device is used for polishing a screw and comprises a polishing machine shell, a motor and a transmission belt, and the screw penetrates in from one end of the polishing machine shell and penetrates out from the other end of the polishing machine shell; a runner device for polishing the screw rod, a driving sleeve and a sealing structure are arranged in the polishing machine shell; the motor is assembled outside the polishing machine shell and connected with the driving sleeve through a transmission belt. The driving sleeve is assembled on the outer wall of the runner device and used for driving the runner device to rotate; the sealing structure is assembled at the joint of the polishing machine shell and the driving sleeve; the transmission belt is driven by the motor, then the driving sleeve and the runner device are driven to rotate, the movement speed of abrasive particle flow is increased, and the polishing efficiency is improved; the runner device can polish one section of the screw rod, so that the polishing device can adapt to the screw rods with different lengths, and the application range and the practicability of the polishing device are improved; and the runner device can be used for uniformly and finely polishing the screw rod, so that the consistency and the stability of the polishing quality are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of screw polishing, in particular to an internal rotation extrusion abrasive flow polishing device. Background Art

[0002] Polishing is a processing method commonly used to improve the surface accuracy and finish of the screw. When the surface accuracy and finish of the screw are insufficient, it will affect the performance and life of the screw. Therefore, the surface of the screw is often polished to improve its accuracy and finish. At present, turning, rolling and milling are mostly used at home and abroad to process the spiral surface of the screw, but the surface quality after processing is often difficult to meet the use requirements. Therefore, it is necessary to study and adopt more advanced and efficient polishing methods and technologies to improve the accuracy and finish of the screw surface.

[0003] Traditional long screw polishing technology has problems such as manual factors having a significant impact on polishing quality and consistency, and low polishing efficiency. Traditional long screw abrasive flow polishing technology is limited by the length and shape of the screw, and conventional methods are difficult to achieve efficient and uniform polishing effects. In addition, problems such as uneven distribution of abrasive media, pressure drop, and different roughness requirements are difficult to solve, resulting in low polishing efficiency and difficulty in ensuring the surface quality after polishing. Using special CNC belt polishers or multi-axis CNC machine tools and other equipment for screw finishing can significantly improve efficiency and quality, but the equipment is expensive and has limited adaptability.

[0004] In traditional long screw polishing technology, the spiral surface of the manually polished screw is greatly affected by human factors, which will lead to poor polishing quality and product consistency, low production efficiency and other problems; in long screw abrasive flow polishing technology, due to the length and shape limitations of the screw, it is difficult to achieve efficient and uniform polishing effects using conventional polishing methods. The abrasive flow pressure and processing effect will deteriorate with increasing distance. Conventional methods are difficult to solve the problems of uneven distribution of abrasive media, pressure drop in the processing path, and inability to meet the different roughness requirements of different parts, resulting in low polishing efficiency and difficulty in ensuring the surface quality after polishing. Summary of the invention

[0005] In order to overcome the above-mentioned defects in the prior art, an internal rotation extrusion abrasive flow polishing device is provided.

[0006] The technical solution of the present invention is as follows: an internal rotating extrusion abrasive flow polishing device for polishing a screw, comprising a polishing machine housing, a motor and a transmission belt, the screw enters from one end of the polishing machine housing and exits from the other end; a flow channel device, a driving sleeve and a sealing structure for screw polishing are provided in the polishing machine housing; the motor is assembled outside the polishing machine housing and connected to the driving sleeve through a transmission belt; the driving sleeve is assembled on the outer wall of the flow channel device for driving the flow channel device to rotate; the sealing structure is assembled at the connection between the polishing machine housing and the driving sleeve; the transmission belt is driven by the motor, and then the driving sleeve and the flow channel device are driven to rotate, thereby accelerating the movement speed of the abrasive flow and improving the polishing efficiency; by adjusting the relative position of the flow channel device and the screw, the screw can be polished in sections, so that the polishing device can adapt to screws of different lengths, thereby improving the scope of application and practicality of the polishing device; the flow channel device can polish the screw evenly and carefully, thereby ensuring the consistency and stability of the polishing quality.

[0007] Preferably, the side wall of the flow channel device is provided with a grid for the abrasive medium to enter, a polishing channel for accommodating the abrasive medium is provided inside the flow channel device, and a spiral pattern is provided on the inner wall of the polishing channel. The spiral pattern can guide the abrasive flow to move along the spiral path, increase the vortex amount of the flow field, significantly enhance the force of the abrasive on the screw, shorten the time required for polishing, and significantly improve the polishing efficiency; the grid is provided on the side wall of the flow channel device, dividing the spiral pattern into two parts, making the flow path of the abrasive medium in the flow channel device more reasonable and smooth; avoiding congestion and retention of the abrasive medium during the flow process, ensuring that the abrasive medium can act on the screw wall evenly and stably; it can balance the pressure distribution of the abrasive medium in the flow channel device, avoiding the difference in polishing quality caused by uneven pressure.

[0008] Preferably, a mounting cavity is provided in the drive sleeve; a fixed end is provided at one end of the mounting cavity, and a driving end is provided at the other end that passes through the polishing machine housing and is connected to the transmission belt. The mounting cavity makes the structure of the entire polishing device more compact, reduces the footprint of the device, and improves the overall stability of the device; the driving end passes through the polishing machine housing and is connected to the transmission belt, ensuring that the power output by the motor can be efficiently transmitted to the driving sleeve, reducing the loss of energy during the transmission process, and improving the working efficiency of the polishing device.

[0009] Preferably, the flow channel device is provided with a boss connected to the fixed end, thereby improving the connection stability between the flow channel device and the driving sleeve.

[0010] Preferably, the outer surface of the mounting cavity and the side wall of the polishing machine housing are both provided with an abrasive inlet corresponding to the grid, for guiding the abrasive medium through the flow channel device. The abrasive inlet can accurately guide the abrasive medium from the grid into the flow channel device, ensuring that the abrasive medium can be evenly and stably distributed in the flow channel.

[0011] Preferably, the sealing structure is annular in shape, and a step structure for assembling the sealing structure is provided between the mounting cavity and the fixed end, and between the mounting cavity and the driving end. The sealing structure is used to prevent the abrasive medium from flowing out of the gap between the mounting cavity and the polishing machine housing, thereby improving the sealing performance.

[0012] Preferably, a cylindrical groove for accommodating the flow channel device and the drive sleeve is opened in the polishing machine housing. By integrating the flow channel device and the drive sleeve in the cylindrical groove, a modular design of the equipment is achieved, which is convenient for assembly, disassembly and maintenance.

[0013] Preferably, an end cap fixed by bolts is installed on one side of the cylindrical groove, and an outlet for the screw to pass through is opened on the end cap. The end cap is fixed to the polishing machine housing by bolts, forming a good sealing structure. It can not only prevent the abrasive medium from leaking to the outside of the polishing machine housing during the polishing process, maintain the cleanliness and safety of the equipment, but also protect the components inside the cylindrical groove and the through hole from pollution and damage from the external environment.

[0014] Preferably, a mounting plate for fixing the motor is provided on the top of the polishing machine housing. By fixing the motor and adjusting the motor position, the motor mounting plate can ensure that the polishing machine can maintain a stable and uniform polishing speed and pressure during the polishing process, thereby improving the polishing efficiency and quality.

[0015] Preferably, the mounting plate is provided with an avoidance hole for the transmission belt to pass through. The avoidance hole makes the arrangement of the transmission belt more flexible and ensures that the transmission belt can transmit power correctly and stably.

[0016] Compared with the prior art, the present invention has the following beneficial effects: An internal rotation extrusion abrasive flow polishing device can adapt to the polishing of screws of different lengths. For shorter screws, polishing can be completed at one time; for longer screws, by adjusting the relative position of the flow channel device and the screw, the long screw is polished in sections, which improves the polishing quality of the long screw, ensures the accuracy and finish of each section, and thus extends the service life of the screw, making the polishing device more applicable and more practical; and, the segmented polishing can flexibly adjust the polishing process and parameters according to actual conditions, thereby optimizing the entire polishing process; according to the polishing difficulty and requirements of different sections, the appropriate abrasive flow formula, polishing time and pressure and other parameters can be selected to achieve the best polishing effect. Although segmented polishing may require multiple operations, each operation is performed on a shorter section, so it is easier to achieve efficient polishing. At the same time, segmented polishing can reduce error accumulation and unnecessary repeated operations, thereby improving polishing efficiency and quality.

[0017] Furthermore, a grid is provided on the side wall of the flow channel device to divide the spiral polishing channel into two parts, so that the pressure distribution of the abrasive medium inside the flow channel device is uniform, thereby avoiding blockage and retention of the abrasive medium during the flow process, ensuring that the abrasive medium can effectively act on the screw, improving the polishing quality, making the surface flatness and smoothness of the screw consistent after polishing, and improving the consistency of the product.

[0018] Furthermore, the transmission belt is driven by a motor, which in turn drives the drive sleeve and the flow channel device to rotate. This rotation can accelerate the movement speed of the abrasive flow in the polishing channel. The spiral pattern on the inner wall of the polishing channel can further guide the abrasive flow to move along the spiral path, increasing the vortex amount of the flow field, so that the force of the abrasive particles on the screw wall is significantly enhanced, the time required for polishing is shortened, and the polishing efficiency is improved. Through the polishing channel and the spiral pattern, the movement trajectory of the abrasive flow formed by the rotation of the abrasive medium is more stable during the polishing process, reducing the difference in polishing quality caused by uneven distribution of the abrasive flow or unstable movement trajectory.

[0019] Other features and advantages of the present invention will be disclosed in detail in the following specific embodiments and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings: Figure 1 It is a schematic diagram of the installation of an internal rotation extrusion abrasive flow polishing device of the present invention; Figure 2 It is a cross-sectional schematic diagram of an internal rotation extrusion abrasive flow polishing device of the present invention; Figure 3 It is a schematic structural diagram of the flow channel device of the present invention; Figure 4 is a cross-sectional schematic diagram of the flow channel device of the present invention; Figure 5 It is a structural schematic diagram of the driving sleeve of the present invention; Figure 6 It is a structural schematic diagram of the polishing machine housing of the present invention; The following are the descriptions of the reference numerals: Polishing machine housing 1, cylindrical groove 11, end cover 12, outlet 121, motor 2, mounting plate 21, avoidance hole 211, screw 3, transmission belt 4, flow channel device 5, polishing channel 51, grille 52, abrasive flow inlet 521, spiral pattern 511, boss 53, drive sleeve 6, mounting cavity 61, fixed end 62, drive end 63, step structure 64, sealing structure 7. DETAILED DESCRIPTION

[0021] The technical solutions of the embodiments of the present invention are explained and described below in conjunction with the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0022] In the following description, terms such as "inside", "outside", "up", "down", "left", "right", etc. that indicate directions or positional relationships are only used to facilitate the description of the embodiments and simplify the description, and do not indicate or imply that the referred device or element must have a specific direction, be constructed and operate in a specific direction. Therefore, it should not be understood as a limitation of the present invention.

[0023] like Figures 1 to 6 As shown, an internal rotation extrusion abrasive flow polishing device is used to polish a screw 3, including a polishing machine housing 1, a motor 2 and a transmission belt 4. The polishing machine housing 1 is the main body of the entire polishing device, and the polishing machine housing 1 provides necessary protection and support, while ensuring the stability of the polishing process. A flow channel device 5, a drive sleeve 6 and a sealing structure 7 for polishing the screw 3 are provided in the polishing machine housing 1; the motor 2 is assembled outside the polishing machine housing 1 and connected to the drive sleeve 6 through the transmission belt 4; in this embodiment, the motor 2 is the power source of the polishing device, and is connected to the drive sleeve 6 through the transmission belt 4, realizing the transmission and conversion of energy, so that the power of the motor 2 can be efficiently transmitted to the drive sleeve 6, and then drive the flow channel device 5 to rotate; the drive sleeve 6 is assembled on the outer wall of the flow channel device 5, and is used to drive the flow channel device 5 to rotate; this polishing device has a simple structure and high polishing efficiency.

[0024] The screw 3, as the workpiece to be polished, passes through one end of the polishing machine housing 1, and passes out from the other end after polishing, thereby ensuring the continuity and efficiency of the polishing process; by adjusting the relative position between the device and the screw 2, the screw 2 can be polished in sections, and the screw 2 of different sections can be polished with an appropriate amount of abrasive media as needed, thereby avoiding the waste of abrasives in traditional polishing methods. This can not only reduce the polishing cost, but also reduce the impact on the environment.

[0025] The side wall of the flow channel device 5 is provided with a grille 52 for the abrasive medium to enter, and a polishing channel 51 for accommodating the abrasive medium is provided inside the flow channel device 5. The inner wall of the polishing channel 51 is provided with a spiral pattern 511. The grille 52 serves as the entrance of the abrasive medium. The size and position of the opening are optimized by numerical simulation results of computational fluid dynamics to ensure that the abrasive medium can be evenly distributed in the polishing channel 51 when entering the flow channel device 5, forming an ideal flow path. The flow characteristics of the abrasive medium are significantly optimized, effectively avoiding problems such as uneven flow and abrasive medium accumulation, and ensuring the stability of the flow field. During the polishing process, the abrasive medium first enters the polishing channel 51 through the grille 52. Under the guidance of the rotating spiral pattern 511, the abrasive medium rotates at high speed along the spiral path.

[0026] An installation cavity 61 is provided in the drive sleeve 6; the installation cavity 61 makes the structure of the entire polishing device more compact. This compact design not only reduces the footprint of the device, but also improves the overall stability of the device. A fixed end 62 is provided at one end of the installation cavity 61, and a drive end 63 is provided at the other end that passes through the polishing machine housing 1 and is connected to the transmission belt 4. The drive end 63 passes through the polishing machine housing 1 and is connected to the transmission belt 4, ensuring that the power output by the motor 2 can be efficiently transmitted to the drive sleeve 6. This design reduces the loss of energy during the transmission process and improves the working efficiency of the polishing device.

[0027] The flow channel device 5 is provided with a boss 53 connected to the fixed end 62 by bolts. The boss 53 is connected to the fixed end 62 and can limit the swing of the flow channel device 5 in the installation cavity 61, thereby improving the stability of the entire device. The boss 53 provides an installation fixing point for the bolt.

[0028] The outer surface of the mounting cavity 61 and the side wall of the polishing machine housing 1 are both provided with an abrasive flow inlet 521 corresponding to the grille 52, which is used to guide the abrasive medium through the flow channel device 5. The size of the abrasive flow inlet 521 is equal to the size of the grille 52, ensuring that the abrasive medium can smoothly pass through the driving sleeve 6 into the interior of the flow channel device 5; and the setting of the abrasive flow inlet 521 makes maintenance and cleaning work easier, and the abrasive medium and impurities accumulated at the inlet can be easily cleaned.

[0029] The sealing structure 7 is assembled at the connection between the polishing machine housing 1 and the driving sleeve 6. The sealing is ensured during the polishing process, the leakage of abrasive flow and lubricant is prevented, and the polishing quality and the safety of the equipment are guaranteed. In this embodiment, the sealing structure 7 is annular in shape, and a step structure 64 for assembling the sealing structure 7 is provided between the installation cavity 61 and the fixed end 62, and between the installation cavity 61 and the driving end 63. The step structure 64 provides a clear positioning point for the installation of the sealing structure 7, making the installation process simpler and faster.

[0030] The polishing machine housing 1 is a square structure, and a cylindrical groove 11 is provided in the polishing machine housing 1 for accommodating the flow channel device 5 and the driving sleeve 6. The size of the cylindrical groove 11 matches the size of the driving sleeve 6. An end cover 12 fixed by bolts is assembled on one side of the cylindrical groove 11, and an outlet 121 for the screw rod 3 to pass through is provided on the end cover 12. The driving end 63 passes through the opening on the other side of the cylindrical groove 11, A mounting plate 21 for fixing the motor 2 is provided on the top of the polishing machine housing 1. The main function of the mounting plate 21 is to fix the motor 2 to ensure that the motor 2 can run stably during the polishing process. The mounting plate 21 can provide sufficient support and stability to prevent the motor 2 from being displaced or damaged when it runs at high speed or is impacted by external forces. In this embodiment, the mounting plate 21 is adjustable and detachable so that the position and angle of the motor can be adjusted according to the needs of the polishing work. This allows the polishing device to be applicable to workpieces of different shapes and sizes, improving the flexibility and efficiency of polishing.

[0031] The mounting plate 21 is provided with an avoidance hole 211 for the transmission belt 4 to pass through. The avoidance hole 211 provides a channel for the transmission belt 4 to pass through the mounting plate 21, ensuring that the transmission belt 4 can pass through smoothly without interfering with other components, so that the transmission belt 4 can be connected to the driving end 63, ensuring that the transmission belt 4 can correctly and stably transmit power, so that the driving sleeve 6 can rotate, driving the abrasive medium in the flow channel device 5 to polish the screw.

[0032] When the abrasive flow completes processing the workpiece surface, the abrasive medium is discharged through the opening of the flow channel device 5 close to the boss 53 and the outlet 121 provided on the end cover 12 to prevent abrasive accumulation and blockage and prevent uneven pressure in the processing part.

[0033] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification that does not deviate from the functional and structural principles of the present invention will be included in the scope of the claims.

Claims

1. An internal rotation extrusion abrasive flow polishing device for polishing a screw (3), characterized in that: The polishing machine comprises a polishing machine housing (1), a motor (2) and a transmission belt (4); the screw (3) is inserted into the polishing machine housing (1) from one end and exits from the other end; a flow channel device (5), a driving sleeve (6) and a sealing structure (7) for polishing the screw (3) are provided inside the polishing machine housing (1); the motor (2) is mounted outside the polishing machine housing (1) and connected to the driving sleeve (6) via the transmission belt (4); the driving sleeve (6) is mounted on the outer wall of the flow channel device (5) and is used to drive the flow channel device (5) to rotate; and the sealing structure (7) is mounted at the connection between the polishing machine housing (1) and the driving sleeve (6).

2. The internal rotation extrusion abrasive flow polishing device according to claim 1, characterized in that: The side wall of the flow channel device (5) is provided with a grid (52) for the abrasive medium to enter, and a polishing channel (51) for accommodating the abrasive medium is provided inside the flow channel device (5), and a spiral pattern (511) is provided on the inner side wall of the polishing channel (51).

3. The internal rotation extrusion abrasive flow polishing device according to claim 1, characterized in that: The drive sleeve (6) is provided with a mounting cavity (61); one end of the mounting cavity (61) is provided with a fixed end (62), and the other end is provided with a driving end (63) that passes through the polishing machine housing (1) and is connected to the transmission belt (4).

4. The internal rotation extrusion abrasive flow polishing device according to claim 3, characterized in that: The flow channel device (5) is provided with a boss (53) connected to the fixed end (62).

5. The internal rotation extrusion abrasive flow polishing device according to claim 3, characterized in that: The outer surface of the installation cavity (61) and the side wall of the polishing machine housing (1) are both provided with an abrasive inlet (521) corresponding to the grille (52) for guiding the abrasive medium to pass through the flow channel device (5).

6. The internal rotation extrusion abrasive flow polishing device according to claim 3, characterized in that: The sealing structure (7) is annular in shape, and a stepped structure (64) for assembling the sealing structure (7) is provided between the installation cavity (61) and the fixed end (62), and between the installation cavity (61) and the driving end (63).

7. The internal rotation extrusion abrasive flow polishing device according to claim 1, characterized in that: A cylindrical groove (11) for accommodating a flow channel device (5) and a drive sleeve (6) is provided in the polishing machine housing (1).

8. The internal rotation extrusion abrasive flow polishing device according to claim 7, characterized in that: An end cover (12) fixed by bolts is mounted on one side of the cylindrical groove (11), and an outlet (121) for the screw rod (3) to pass through is provided on the end cover (12).

9. The internal rotation extrusion abrasive flow polishing device according to claim 1, characterized in that: A mounting plate (21) for fixing the motor (2) is provided on the top of the polishing machine housing (1).

10. The internal rotation extrusion abrasive flow polishing device according to claim 9, characterized in that: The mounting plate (21) is provided with an avoidance hole (211) for the transmission belt (4) to pass through.

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