A lathe suitable for machining long workpieces

Abstract

This invention belongs to the field of lathe technology, specifically a lathe suitable for machining long workpieces. It includes a lathe body with two receiving platforms for receiving machining waste. The lathe body also has two material collection ports. Through the structural design of the brush assembly, the brush cylinder rotates, driving the bristles to rotate. Since the bristles are arranged horizontally, they can thoroughly clean the surface of the receiving platforms. A sponge block is placed between the two sets of bristles to clean the gaps between them, ensuring no dead corners are left during cleaning. This achieves the function of thoroughly cleaning the receiving platform, solving the problem that current lathes typically use vertically oriented cleaning brushes, which leave cleaning dead corners and result in insufficient cleaning of the receiving platform, leaving small amounts of waste residue after the brush passes through.

Description

Technical Field

[0001] This invention relates to the field of lathe technology, specifically a lathe suitable for machining long workpieces. Background Technology

[0002] Currently, in the casting process of robotic arms, after casting is completed, the robotic arm needs to be demolded. During demolding, excess material is generated due to the draft angle. This excess material needs to be removed using a specialized lathe. Traditional planers and lathes cannot process this part. Wire EDM can be used, but the processing efficiency is low, and prolonged contact between the wire EDM fluid and the part can cause corrosion. A possible solution is to modify the traditional lathe by fixing the tool holder to the spindle and tailstock of a conventional lathe, fixing the part to the lathe saddle, and allowing it to move along the Z-axis for cutting. The X-axis motor of the lathe can be changed from an asynchronous motor to a stepper motor for tool retraction and feed movement, thus enabling the machining of this part.

[0003] The modified lathe has a receiving platform, a material collection port, and a material collection tray. The receiving platform is usually equipped with a cleaning structure, which consists of a brush and a drive motor. When the receiving platform needs to be cleaned, the drive motor is started to drive the brush, which can clean the machining waste into the material collection port and make the waste fall into the material collection tray.

[0004] However, the cleaning brushes on current lathes are usually set vertically, leaving cleaning dead corners between the vertical brushes. This results in the vertical brushes not cleaning the receiving platform thoroughly enough, and a small amount of waste residue is easily left behind after the brush passes through. Moreover, it is currently impossible to clean the waste residue attached to the brush. The waste residue attached to the brush affects the cleaning process and causes incomplete cleaning. Therefore, to address the above problems, a lathe suitable for machining long workpieces is proposed. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies, the cleaning brushes of current lathes are usually set vertically. The vertical brushes leave cleaning dead corners, which makes it difficult for the vertical brushes to clean the receiving platform thoroughly. Small amounts of waste are easily left behind after the brushes pass through, and it is currently impossible to clean the waste attached to the brushes. This invention proposes a lathe suitable for machining long workpieces.

[0006] The technical solution adopted by this invention to solve its technical problem is as follows: A lathe suitable for machining long workpieces, comprising a lathe body, two receiving platforms for receiving machining waste, two material collection ports located in the middle of the receiving platforms, a motor fixedly connected to the lathe body, a bidirectional threaded rod fixedly connected to the output shaft of the motor, one end of the bidirectional threaded rod being rotatably connected to the lathe body via a bearing, U-shaped moving blocks threaded to both ends of the bidirectional threaded rod, a rotating shaft rotatably connected to the U-shaped moving blocks via bearings, a fixed cylinder fixedly connected to the surface of the rotating shaft, a brush assembly on the fixed cylinder for cleaning the receiving platforms, a gear fixedly connected to the rotating shaft, and a rack fixedly connected to the lathe body, the rack meshing with the gear and positioned above the gear.

[0007] Preferably, the brush assembly includes a brush cylinder fixed to the surface of a fixed cylinder. The length of the brush cylinder is adapted to the width of the receiving platform, and the length of the brush cylinder is greater than the width of the material collection port. A plurality of first elastic posts are fixed to the surface of the brush cylinder, and a plurality of bristles are fixed between two corresponding first elastic posts. The bristles are in contact with the receiving platform. A plurality of second elastic posts are fixed to the surface of the brush cylinder. The second elastic posts are fixed to the middle of the corresponding bristles. The second elastic posts are used to keep the bristles bent outward. A gap is provided between two adjacent first elastic posts. A plurality of third elastic posts are fixed to the surface of the brush cylinder. The third elastic posts are located in the gaps. A sponge block is fixed to one end of each third elastic post. The outermost edge of the sponge block is flush with the outermost edge of the bristles. The shape of the sponge block is adapted to the area between two adjacent bristles.

[0008] Preferably, elastic auger blades are fixed to both ends of the brush cylinder, the two elastic auger blades have opposite spiral directions, and the elastic auger blades are in contact with the receiving platform.

[0009] Preferably, five scrapers are fixedly connected inside the collection port, and gaps are provided between adjacent scrapers. The top surface of the scrapers is flush with the receiving platform.

[0010] Preferably, the scraper is an electromagnet rod, a cross plate is fixedly connected to the lathe body, two first springs are fixedly connected to the cross plate, a moving plate is fixedly connected to one end of the first spring, an arc-shaped plate is provided in the middle of the moving plate, the arc-shaped plate is directly opposite the five scrapers, and the length of the parallel part of the arc-shaped plate and the moving plate is greater than the distance between the two outermost scrapers, a top block is fixedly connected to the U-shaped moving block, the top block is in close contact with the moving plate, a first L-shaped plate is fixedly connected to the cross plate, a first contact piece is fixedly connected to the first L-shaped plate, a second L-shaped plate is fixedly connected to the moving plate, a second contact piece is fixedly connected to the second L-shaped plate, and the second contact piece is directly opposite the first contact piece.

[0011] Preferably, the lathe body has a rectangular groove, a second spring is fixedly connected to the bottom of the rectangular groove, a connecting rod is fixedly connected to the top of the second spring, the connecting rod is slidably connected to the lathe body, a first semicircular block is fixedly connected to one end of the connecting rod, the height of the first semicircular block is lower than the rotating shaft, an impact block is fixedly connected between the other ends of the two connecting rods, the bottom end of the impact block is in contact with the bottom surface of the scraper, an L-shaped block is fixedly connected to the U-shaped moving block, a second semicircular block is fixedly connected to one end of the L-shaped block, and the second semicircular block is directly opposite the first semicircular block.

[0012] Preferably, the threads at both ends of the bidirectional threaded rod are in opposite directions, and the two U-shaped moving blocks are provided with threaded holes, which are adapted to the corresponding thread directions. The U-shaped moving blocks are threadedly connected to the surface of the bidirectional threaded rod through the threaded holes.

[0013] Preferably, a limit strip is fixedly connected to the lathe body, and a limit port is provided on the U-shaped moving block. The U-shaped moving block is slidably connected to the limit strip through the limit port.

[0014] Preferably, two telescopic sleeves are fixedly connected between the horizontal plate and the movable plate, and the first spring is sleeved on the outside of the telescopic sleeve.

[0015] Preferably, the lathe body has a rectangular opening, and the connecting rod is slidably connected within the rectangular opening.

[0016] The advantages of this invention are:

[0017] 1. This invention, through the structural design of the brush assembly, allows the brush barrel to rotate during the brush barrel's rotation, driving the brush bristles to rotate as well. Since the brush bristles are arranged horizontally, they can thoroughly clean the surface of the receiving platform. Furthermore, a sponge block is provided between the two sets of brush bristles to clean the gaps between them, ensuring that no cleaning dead corners are left during the cleaning process. This achieves the function of thoroughly cleaning the receiving platform, solving the problem that the cleaning brushes of current lathes are usually set vertically, leaving cleaning dead corners between the vertical brushes, resulting in insufficient cleaning of the receiving platform by the vertical brushes and the easy residue of small amounts of waste after the brush passes through.

[0018] 2. This invention, through the structural design of the scraper, allows the brush cylinder to move above the collection port when the U-shaped moving block drives it. The brush bristles and sponge block then contact the scraper, which initially removes the debris adhering to the bristles and sponge block. Simultaneously, the top block on the U-shaped moving block slides on the moving plate. Before the brush bristles and scraper contact, the top block enters the arc-shaped plate area. Under the action of the first spring, the moving plate moves towards the U-shaped moving block, and the first contact piece contacts the second contact piece, energizing the scraper. The scraper can then adsorb the debris from the passing brush bristles and sponge block, thus achieving the function of cleaning the debris adhering to the brush bristles and sponge block, solving the current problem of not being able to clean the debris adhering to the brush. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of Example 1;

[0021] Figure 2 This is one of the partial three-dimensional structural schematic diagrams of Embodiment 1;

[0022] Figure 3 This is a cross-sectional schematic diagram of the lathe body in Embodiment 1;

[0023] Figure 4 This is the second partial three-dimensional structural schematic diagram of Embodiment 1;

[0024] Figure 5 This is a schematic diagram of the brush assembly structure in Embodiment 1;

[0025] Figure 6 Example 1 Figure 5 Enlarged view of point A in the middle;

[0026] Figure 7 Example 1 Figure 3 Enlarged view of point B in the middle;

[0027] Figure 8 This is a top view of the movable plate in Embodiment 1;

[0028] Figure 9 This is a schematic diagram of the U-shaped moving block structure in Embodiment 1.

[0029] In the diagram: 1. Lathe body; 2. Material inlet; 3. Motor; 4. Bidirectional threaded rod; 5. U-shaped moving block; 6. Shaft; 7. Fixed cylinder; 8. Gear; 9. Rack; 10. Brush cylinder; 11. First elastic column; 12. Brush bristles; 13. Second elastic column; 14. Gap; 15. Third elastic column; 16. Sponge block; 17. Elastic auger blade; 18. Scraper; 19. Cross plate; 20. First spring; 2 1. Moving plate; 22. Arc plate; 23. Top block; 24. First L-shaped plate; 25. First contact piece; 26. Second L-shaped plate; 27. Second contact piece; 28. Rectangular groove; 29. ​​Second spring; 30. Connecting rod; 31. First semicircular block; 32. Impact block; 33. L-shaped block; 34. Second semicircular block; 35. Threaded hole; 36. Limiting strip; 37. Limiting opening; 38. Telescopic sleeve; 39. Rectangular opening. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Example 1

[0032] Please see Figures 1-9As shown, a lathe suitable for machining long workpieces includes a lathe body 1, on which two receiving platforms are provided for receiving machining waste. Two material collection ports 2 are opened on the lathe body 1, located in the middle of the receiving platforms. A motor 3 is fixedly connected to the lathe body 1, and a bidirectional threaded rod 4 is fixedly connected to the output shaft of the motor 3. One end of the bidirectional threaded rod 4 is rotatably connected to the lathe body 1 via a bearing. U-shaped moving blocks 5 are threaded to both ends of the bidirectional threaded rod 4. A rotating shaft 6 is rotatably connected to the U-shaped moving blocks 5 via bearings. A fixed cylinder 7 is fixedly connected to the surface of the rotating shaft 6. A brush assembly is provided on the fixed cylinder 7 for cleaning the receiving platforms. A gear 8 is fixedly connected to the rotating shaft 6, and a rack 9 is fixedly connected to the lathe body 1. The rack 9 meshes with the gear 8, and the rack 9 is located above the gear 8.

[0033] During operation, the lathe body 1 processes excess material caused by the draft angle of the robotic arm. Waste generated during processing falls into the receiving platform or the collection port 2. After processing, the receiving platform needs to be cleaned. The motor 3 is started, and the motor 3 drives the bidirectional threaded rod 4 to rotate. The bidirectional threaded rod 4 drives the U-shaped moving blocks 5 on both sides to move towards the middle. The U-shaped moving blocks 5 drive the rotating shaft 6 to move. The gear 8 on the rotating shaft 6 travels on the rack 9 and the gear 8 will rotate. The gear 8 drives the rotating shaft 6 and the fixed cylinder 7 to rotate. The fixed cylinder 7 drives the brush assembly to rotate. The brush bristles 12 and the sponge block 16 can clean the receiving platform and continuously clean the waste forward until the waste falls into the collection port 2.

[0034] The brush assembly includes a brush cylinder 10 fixed to the surface of the fixed cylinder 7. The length of the brush cylinder 10 is adapted to the width of the receiving platform, and the length of the brush cylinder 10 is greater than the width of the collection port 2. A plurality of first elastic pillars 11 are fixed to the surface of the brush cylinder 10, and a plurality of bristles 12 are fixed between two corresponding first elastic pillars 11. The bristles 12 are in contact with the receiving platform. A plurality of second elastic pillars 13 are fixed to the surface of the brush cylinder 10. The second elastic pillars 13 are fixed to the middle of the corresponding bristles 12. The second elastic pillars 13 are used to keep the bristles 12 bent outward. A gap 14 is provided between two adjacent first elastic pillars 11. A plurality of third elastic pillars 15 are fixed to the surface of the brush cylinder 10. The third elastic pillars 15 are located in the gap 14. A sponge block 16 is fixed to one end of the third elastic pillar 15. The outermost edge of the sponge block 16 is flush with the outermost edge of the bristles 12. The shape of the sponge block 16 is adapted to the area between two adjacent bristles 12.

[0035] During operation, because the bristles 12 are arranged horizontally and curved outwards, the bristles 12 can fully contact the surface of the receiving platform. Compared with the vertically arranged bristles 12, the horizontally arranged bristles 12 have a better cleaning effect. In addition, a sponge block 16 is provided in the dead corner area between the two sets of bristles 12. The sponge block 16 can clean the dead corner area between the two sets of bristles 12, ensuring that no dead corners are left during the cleaning process, and the receiving platform can be thoroughly cleaned. The first elastic column 11, the second elastic column 13 and the third elastic column 15 do not affect the cleaning process. The second elastic column 13 can keep the bristles 12 in a state of curving outwards.

[0036] Both ends of the brush cylinder 10 are fixed with elastic auger blades 17, the two elastic auger blades 17 have opposite spiral directions, and the elastic auger blades 17 are in contact with the receiving platform.

[0037] During operation, there is a distance between the collection port 2 and the receiving platform, and waste may accumulate in this area. During the movement of the U-shaped moving block 5, the rotation of the rotating shaft 6 can drive the elastic auger blades 17 on both sides to rotate. The elastic auger blades 17 can push the waste on both sides into the collection port 2.

[0038] Five scraper rods 18 are fixedly connected inside the material collection port 2, and there is a gap between adjacent scraper rods 18. The top surface of the scraper rod 18 is flush with the receiving platform.

[0039] During operation, when the brush bristles 12 and sponge block 16 pass by the scraper 18, the scraper 18 can scrape off the debris on the brush bristles 12 and sponge block 16, thus performing preliminary cleaning of the brush bristles 12 and sponge block 16.

[0040] The scraper 18 is an electromagnet rod. A horizontal plate 19 is fixedly connected to the lathe body 1. Two first springs 20 are fixedly connected to the horizontal plate 19. A moving plate 21 is fixedly connected to one end of each first spring 20. An arc-shaped plate 22 is provided in the middle of the moving plate 21. The arc-shaped plate 22 is directly opposite the five scrapers 18. The length of the parallel part of the arc-shaped plate 22 and the moving plate 21 is greater than the distance between the two outermost scrapers 18. A top block 23 is fixedly connected to the U-shaped moving block 5. The top block 23 is in close contact with the moving plate 21. A first L-shaped plate 24 is fixedly connected to the horizontal plate 19. A first contact piece 25 is fixedly connected to the first L-shaped plate 24. A second L-shaped plate 26 is fixedly connected to the moving plate 21. A second contact piece 27 is fixedly connected to the second L-shaped plate 26. The second contact piece 27 is directly opposite the first contact piece 25.

[0041] During operation, as the U-shaped moving block 5 moves, the first spring 20 keeps the moving plate 21 in constant contact with the top block 23. The U-shaped moving block 5 drives the top block 23 to move, and the top block 23 slides against the side wall of the moving plate 21. When the top block 23 reaches the arc-shaped plate 22, the first spring 20 causes the moving plate 21 and the arc-shaped plate 22 to move towards the U-shaped moving block 5. The moving plate 21 then reaches the second L-shaped plate 26 and the second contact piece 27, which then contacts the first contact piece 25, activating the circuit of the scraper rod 18. The scraper rod 18, which has an electromagnet, becomes magnetic. At this point, the bristles 12 and the sponge block 16 have not yet reached the scraper. At rod 18, when top block 23 slides parallel to moving plate 21 on arc plate 22, first contact piece 25 and second contact piece 27 are always in contact, and scraper rod 18 is always in a magnetic state. When brush bristles 12 and sponge block 16 pass by scraper rod 18, on the one hand, scraper rod 18 can scrape off the waste on brush bristles 12 and sponge block 16, and on the other hand, the magnetism of scraper rod 18 can attract the waste that is difficult to scrape off on brush bristles 12 and sponge block 16, and the cleaning effect on waste on brush bristles 12 and sponge block 16 is good. When top block 23 leaves arc plate 22, first contact piece 25 and second contact piece 27 separate, scraper rod 18 loses magnetism, and the attracted waste will fall into collection port 2.

[0042] A rectangular slot 28 is provided on the lathe body 1. A second spring 29 is fixedly connected to the bottom of the rectangular slot 28. A connecting rod 30 is fixedly connected to the top of the second spring 29. The connecting rod 30 is slidably connected to the lathe body 1. A first semicircular block 31 is fixedly connected to one end of the connecting rod 30. The height of the first semicircular block 31 is lower than that of the rotating shaft 6. An impact block 32 is fixedly connected between the other ends of the two connecting rods 30. The bottom end of the impact block 32 is in contact with the bottom surface of the scraper 18. An L-shaped block 33 is fixedly connected to the U-shaped moving block 5. A second semicircular block 34 is fixedly connected to one end of the L-shaped block 33. The second semicircular block 34 is directly opposite the first semicircular block 31.

[0043] During operation, as the U-shaped moving block 5 moves, it can drive the second semicircular block 34 to move. The second semicircular block 34 will come into contact with the first semicircular block 31 during its movement. The second semicircular block 34 will press the first semicircular block 31 to move downward. The first semicircular block 31 will drive the connecting rod 30 and the impact block 32 to move downward. The second spring 29 is compressed. When the second semicircular block 34 is not in contact with the first semicircular block 31, under the action of the second spring 29, the impact block 32 suddenly hits the scraper 18. The impact generates vibration, which can shake off a small amount of waste debris accumulated at the top of the scraper 18.

[0044] The threads at both ends of the bidirectional threaded rod 4 are opposite in direction. The two U-shaped moving blocks 5 are provided with threaded holes 35, which are adapted to the corresponding thread directions. The U-shaped moving blocks 5 are threadedly connected to the surface of the bidirectional threaded rod 4 through the threaded holes 35.

[0045] During operation, as the bidirectional threaded rod 4 rotates, it can drive the U-shaped moving blocks 5 on both sides to move in opposite directions, while simultaneously cleaning the receiving platforms on both sides.

[0046] A limit bar 36 is fixedly connected to the lathe body 1, and a limit port 37 is opened on the U-shaped moving block 5. The U-shaped moving block 5 is slidably connected to the limit bar 36 through the limit port 37.

[0047] During operation, as the U-shaped moving block 5 moves, it slides on the limiting strip 36 through the limiting port 37, thus limiting the U-shaped moving block 5 in the horizontal direction.

[0048] Two telescopic sleeves 38 are fixedly connected between the horizontal plate 19 and the movable plate 21, and the first spring 20 is sleeved on the outside of the telescopic sleeve 38.

[0049] During operation, as the movable plate 21 and the arc plate 22 move, the movable plate 21 drives the extension end of the telescopic sleeve 38 to extend, limiting the movable plate 21 in the horizontal direction.

[0050] The lathe body 1 has a rectangular opening 39, and the connecting rod 30 is slidably connected inside the rectangular opening 39;

[0051] During operation, as the connecting rod 30 and the impact block 32 move, the connecting rod 30 slides within the rectangular opening 39, limiting the connecting rod 30 and the impact block 32 in the vertical direction.

[0052] Working principle: During use, the lathe body 1 processes excess material caused by the draft angle of the robotic arm. Waste chips generated during processing fall into the receiving platform or collection port 2. After processing, the receiving platform needs to be cleaned. The motor 3 is started, driving the bidirectional threaded rod 4 to rotate. The bidirectional threaded rod 4 drives the U-shaped moving blocks 5 on both sides to move towards the center. The U-shaped moving blocks 5 drive the rotating shaft 6 to move. The gear 8 on the rotating shaft 6 travels on the rack 9, causing the gear 8 to rotate. The gear 8 drives the rotating shaft 6 and the fixed cylinder 7 to rotate. The fixed cylinder 7 drives the brush assembly to rotate. The brush bristles 12 and sponge block 16 clean the receiving platform, continuously pushing the waste chips forward until they fall into the collection port 2. Because the brush bristles 12 are horizontally positioned and curved outwards... The bristles 12 can fully contact the surface of the receiving platform. Compared with vertically arranged bristles 12, horizontally arranged bristles 12 have a better cleaning effect. Furthermore, a sponge block 16 is provided in the dead corner area between the two sets of bristles 12. The sponge block 16 can clean the dead corner area between the two sets of bristles 12, ensuring that no dead corners are left during the cleaning process, and thoroughly cleaning the receiving platform. During the movement of the U-shaped moving block 5, due to the action of the first spring 20, the moving plate 21 is always in contact with the top block 23. The U-shaped moving block 5 drives the top block 23 to move, and the top block 23 slides on the side wall of the moving plate 21. When the top block 23 moves to the arc plate 22, due to the action of the first spring 20, the moving plate 21 and the arc plate 22 move towards the U-shaped moving block 5. As the moving plate 21 moves, the second L-shaped plate 26 and the second contact piece 27 move, and the second contact piece 27 contacts the first contact piece 25, causing the circuit of the scraper rod 18 to be connected. The scraper rod 18, which has an electromagnet, generates magnetism. At this time, the brush bristles 12 and the sponge block 16 have not yet reached the scraper rod 18. When the top block 23 slides at the position of the arc plate 22 parallel to the moving plate 21, the first contact piece 25 and the second contact piece 27 are always in contact, and the scraper rod 18 is always in a magnetic state. When the brush bristles 12 and the sponge block 16 pass the scraper rod 18, on the one hand, the scraper rod 18 can scrape off the waste on the brush bristles 12 and the sponge block 16. On the other hand, the magnetism of the scraper rod 18 can attract the waste that is difficult to scrape off from the brush bristles 12 and the sponge block 16. The cleaning effect is good. When the top block 23 leaves the arc plate 22, the first contact piece 25 and the second contact piece 27 separate, the scraper 18 loses its magnetism, and the adsorbed waste will fall into the collection port 2. During the movement of the U-shaped moving block 5, the U-shaped moving block 5 can drive the second semicircular block 34 to move. The second semicircular block 34 will contact the first semicircular block 31 during the movement. The second semicircular block 34 will press the first semicircular block 31 to move downward. The first semicircular block 31 will drive the connecting rod 30 and the impact block 32 to move downward. The second spring 29 is compressed. When the second semicircular block 34 is not in contact with the first semicircular block 31, under the action of the second spring 29, the impact block 32 suddenly hits the scraper 18. The impact generates vibration, which can shake off a small amount of waste accumulated at the top of the scraper 18.

[0053] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A lathe suitable for machining long workpieces, comprising a lathe body (1), wherein the lathe body (1) is provided with two receiving platforms for receiving machining waste, the lathe body (1) has two material collection ports (2) located in the middle of the receiving platforms, a motor (3) is fixedly connected to the lathe body (1), and a bidirectional threaded rod (4) is fixedly connected to the output shaft of the motor (3), one end of the bidirectional threaded rod (4) being rotatably connected to the lathe body (1) via a bearing, characterized in that: Both ends of the bidirectional threaded rod (4) are threaded with U-shaped moving blocks (5). A rotating shaft (6) is rotatably connected to the U-shaped moving block (5) via a bearing. A fixed cylinder (7) is fixed to the surface of the rotating shaft (6). A brush assembly is provided on the fixed cylinder (7). The brush assembly is used to clean the receiving platform. A gear (8) is fixed to the rotating shaft (6). A rack (9) is fixed to the lathe body (1). The rack (9) meshes with the gear (8), and the rack (9) is located above the gear (8). The brush assembly includes a brush cylinder (10) fixed to the surface of the fixed cylinder (7). The length of the brush cylinder (10) is adapted to the width of the receiving platform, and the length of the brush cylinder (10) is greater than the width of the collection port (2). A plurality of first elastic posts (11) are fixed to the surface of the brush cylinder (10), and a plurality of bristles (12) are fixed between two corresponding first elastic posts (11). The bristles (12) are in contact with the receiving platform. A plurality of second elastic posts (13) are fixed to the surface of the brush cylinder (10), and the second elastic posts (13) are fixed to the corresponding bristles. In the middle of (12), the second elastic post (13) is used to keep the bristles (12) bent outward. There is a gap (14) between two adjacent first elastic posts (11). Multiple third elastic posts (15) are fixed to the surface of the brush cylinder (10). The third elastic posts (15) are located in the gap (14). A sponge block (16) is fixed to one end of the third elastic post (15). The outermost edge of the sponge block (16) is flush with the outermost edge of the bristles (12). The shape of the sponge block (16) is adapted to the area between two adjacent bristles (12). Both ends of the brush cylinder (10) are fixed with elastic auger blades (17), the two elastic auger blades (17) have opposite spiral directions, and the elastic auger blades (17) are in contact with the receiving platform.

2. The lathe suitable for machining long workpieces according to claim 1, characterized in that: Five scrapers (18) are fixedly connected inside the collection port (2), and there is a gap between adjacent scrapers (18). The top surface of the scraper (18) is flush with the receiving platform.

3. A lathe suitable for machining long workpieces according to claim 2, characterized in that: The scraper (18) is an electromagnet rod. A cross plate (19) is fixedly connected to the lathe body (1). Two first springs (20) are fixedly connected to the cross plate (19). A moving plate (21) is fixedly connected to one end of each first spring (20). An arc plate (22) is provided in the middle of the moving plate (21). The arc plate (22) is directly opposite the five scrapers (18), and the length of the parallel part of the arc plate (22) and the moving plate (21) is greater than the length of the two outermost scrapers (18). The distance between them is such that a top block (23) is fixedly connected to the U-shaped moving block (5), the top block (23) is in close contact with the moving plate (21), a first L-shaped plate (24) is fixedly connected to the horizontal plate (19), a first contact piece (25) is fixedly connected to the first L-shaped plate (24), a second L-shaped plate (26) is fixedly connected to the moving plate (21), a second contact piece (27) is fixedly connected to the second L-shaped plate (26), and the second contact piece (27) is directly opposite the first contact piece (25).

4. A lathe suitable for machining long workpieces according to claim 3, characterized in that: A rectangular slot (28) is provided on the lathe body (1). A second spring (29) is fixed to the bottom of the rectangular slot (28). A connecting rod (30) is fixed to the top of the second spring (29). The connecting rod (30) is slidably connected to the lathe body (1). A first semicircular block (31) is fixed to one end of the connecting rod (30). The height of the first semicircular block (31) is lower than that of the rotating shaft (6). An impact block (32) is fixed between the other ends of the two connecting rods (30). The bottom end of the impact block (32) is in contact with the bottom surface of the scraper (18). An L-shaped block (33) is fixed to the U-shaped moving block (5). A second semicircular block (34) is fixed to one end of the L-shaped block (33). The second semicircular block (34) is directly opposite the first semicircular block (31).

5. A lathe suitable for machining long workpieces according to claim 4, characterized in that: The threads at both ends of the bidirectional threaded rod (4) are opposite in direction. The two U-shaped moving blocks (5) are provided with threaded holes (35). The threaded holes (35) are adapted to the corresponding threaded directions. The U-shaped moving blocks (5) are threadedly connected to the surface of the bidirectional threaded rod (4) through the threaded holes (35).

6. A lathe suitable for machining long workpieces according to claim 5, characterized in that: A limit strip (36) is fixedly connected to the lathe body (1), and a limit port (37) is opened on the U-shaped moving block (5). The U-shaped moving block (5) is slidably connected to the limit strip (36) through the limit port (37).

7. A lathe suitable for machining long workpieces according to claim 6, characterized in that: Two telescopic sleeves (38) are fixedly connected between the horizontal plate (19) and the movable plate (21), and the first spring (20) is sleeved on the outside of the telescopic sleeve (38).

8. A lathe suitable for machining long workpieces according to claim 7, characterized in that: The lathe body (1) has a rectangular opening (39), and the connecting rod (30) is slidably connected in the rectangular opening (39).

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