A turning device for machining a metal shaft part

Abstract

This invention relates to the field of turning apparatus technology, specifically disclosing a turning apparatus for machining metal shaft parts. The apparatus includes a machine bed, with guide plates rotatably mounted on both sides of the bed. A protective door is provided on the machine bed, and two movable frames are located inside the bed, moving along the length of the bed. A slider is fixedly connected to one side of each movable frame, and a pressing and resetting assembly is provided between the movable frame and the guide plate. This turning apparatus for machining metal shaft parts of the present invention triggers two cleaning cycles through the opening and closing of the protective door. Combined with a multi-mode switching design using a scraper, cleaning wipe, and magnetic suction device, the first cleaning removes a large amount of residual debris after machining, and the second cleaning removes any trace debris that may remain before machining, forming a closed-loop cleaning. The periodic oscillation of the guide plate breaks down adhesion, achieving all-around, dead-angle-free cleaning, thus solving the problem of chip blockage caused by chip accumulation in traditional guide plates.

Description

Technical Field

[0001] This invention relates to the field of turning apparatus technology, and more specifically to a turning apparatus for machining metal shaft parts. Background Technology

[0002] In the field of precision machinery manufacturing, metal shaft parts, as core transmission components, are widely used in industries such as automobiles, aerospace, and electronic equipment. Their machining accuracy and efficiency directly determine the performance and reliability of the end products. Turning, as a key process for forming metal shaft parts, has become the mainstream machining method in the industry due to its advantages such as strong machining stability and precise dimensional control. Swiss-type lathes, as an important sub-type of turning equipment, have become the core equipment for mass production of precision shaft parts due to their composite machining capabilities and high-efficiency production characteristics.

[0003] To achieve rapid chip removal, existing Swiss-type lathes generally have inclined guide plates inside, which guide the chips to slide down the plate surface to the collection device through the tilt angle. In actual processing, the fine chips generated by finishing, high-speed cutting and other machining methods are lightweight and have a large specific surface area, making it difficult to achieve rapid sliding down by gravity alone. Moreover, the cutting fluid used in the machining process will form a mixed system with the fine chips. The surface tension of the cutting fluid causes the fine chips to be adsorbed onto the surface of the guide plate. As the thickness of the chip accumulation increases, the guide plate's flow cross-section shrinks, leading to blockage of the chip removal channel, which in turn requires machine shutdown for cleaning, reducing machining efficiency.

[0004] Therefore, a turning device for machining metal shaft parts is needed to solve the above-mentioned technical problems. Summary of the Invention

[0005] This invention provides a turning apparatus for machining metal shaft parts, aiming to solve the technical problem that cutting fluid and fine chips mix and adhere to the guide plate, which easily leads to blockage of the chip removal channel.

[0006] The present invention provides a turning apparatus for machining metal shaft parts, comprising a bed, guide plates rotatably mounted on two sides inside the bed, a protective door on the bed, and further comprising: Two movable frames are set inside the bed. The movable frames move along the length of the bed. A slider is fixedly connected to one side of each movable frame. A pressing and resetting assembly is set between the movable frame and the guide plate. The pressing and resetting assembly is used to make the guide plate swing back and forth. The rotating shaft is rotatably connected to the movable frame. One end of the rotating shaft is connected to the turntable. There are three mounting plates, which are rotatably connected to the turntable. Each mounting plate is connected to the turntable with a return spring. A scraper, a cleaning wipe, and a magnetic suction device are respectively installed on one side of the three mounting plates. The connecting component is located between the protective door and the slider. The connecting component is used to control the connection relationship between the protective door and the movable seat structure. The connection relationship is divided into a connected state and a disconnected state. When the protective door and the movable seat structure are in the connected state, the connecting component is used to make the movable seat structure move synchronously with the movement of the protective door.

[0007] Preferably, the extrusion reset assembly includes rollers, a pressure plate, and two reset springs. The rollers are rotatably mounted on one side of the moving frame, and there are two rollers symmetrically distributed on one side of the moving frame. The pressure plate is connected to the guide plate, and multiple arc-shaped grooves are opened on one side of the pressure plate. Both ends of the pressure plate are provided with guide slopes. The rollers are positioned corresponding to the pressure plate. A transition arc surface is provided between two adjacent arc-shaped grooves. There are multiple reset springs. One end of the reset spring is connected to the guide plate, and the other end of the reset spring is installed inside the bed. The elastic force of the reset spring is greater than that of the reset spring.

[0008] Preferably, the connecting assembly includes a fixed insertion hole, a guide rod, a fixed spring, a fixed pressure plate, a fixed insertion rod, and a pull rope. The fixed insertion hole is opened on one side of the slider, and there are at least two fixed insertion holes. The guide rod is installed at the bottom of the protective door. The fixed spring is sleeved on the outer surface of the guide rod, and one end of the fixed spring is connected to the protective door, and the other end of the fixed spring is connected to the fixed pressure plate. The guide rod passes through the fixed pressure plate and is slidably connected to the fixed pressure plate. There are at least two fixed insertion rods, and the fixed insertion rods are connected to the fixed pressure plate. The size of the fixed insertion rods is adapted to the size of the fixed insertion hole. The pull rope is connected to the fixed pressure plate, and the end of the pull rope away from the fixed pressure plate is located outside the protective door. The end of the pull rope away from the fixed pressure plate is connected to a pull ring.

[0009] Preferably, a drive structure is provided between the movable frame and the slider. The drive structure is used to drive the rotating shaft to rotate. The drive structure includes a base, a drive component, a first transmission gear and a second transmission gear. The base is connected to the movable frame and the slider. The drive component is installed on one side of the base. The first transmission gear is connected to the output end of the drive component. The second transmission gear meshes with the first transmission gear, and the rotating shaft is connected to the second transmission gear.

[0010] Preferably, a connecting beam connects the two moving frames, the connecting beam is used to make the two moving frames move synchronously, and a guide block is provided on the top side of the connecting beam, and a guide slope is provided on the guide block.

[0011] Preferably, the protective door is equipped with multiple limit rollers inside, and the pull rope passes through the groove of the limit roller and is tactilely connected to the limit roller.

[0012] Preferably, guide rails are fixedly installed on both sides inside the bed, the length direction of the guide rails is parallel to the length direction of the bed, and the slider is slidably connected to the guide rail, with one slider corresponding to one guide rail.

[0013] Preferably, the machine bed is equipped with a spindle structure and a feed system.

[0014] The beneficial effects of this invention are: 1. The protective door opening and closing action triggers two cleaning cycles. Combined with the multi-mode switching design of scraper, cleaning wipe, and magnetic suction, the first cleaning removes a large amount of debris remaining after processing, and the second cleaning removes trace amounts of debris that may remain before processing, forming a closed-loop cleaning. In addition, the periodic oscillation of the guide plate breaks the adhesion, achieving all-round, dead-angle-free cleaning, which solves the problem of chip blockage caused by chip accumulation in traditional guide plates.

[0015] 2. Utilizing the linkage design of the protective door and the movable seat structure, the cleaning components can be moved without additional drive devices, simplifying the equipment structure and reducing energy consumption. The connecting components enable flexible connection and disconnection of the protective door and the movable seat through a mechanical structure, adapting to different processing requirements and making operation convenient. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention.

[0017] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0018] Figure 3 This is the present invention. Figure 2 A magnified structural diagram of point A in the middle.

[0019] Figure 4 This is a structural schematic diagram of the movable seat structure and its connecting components of the present invention.

[0020] Figure 5 This is a first-view structural schematic diagram of the mobile frame and its connecting components of the present invention.

[0021] Figure 6 This is a second-view schematic diagram of the mobile frame and its connecting components of the present invention.

[0022] Figure 7 This is a schematic diagram of the material guide plate of the present invention.

[0023] Figure 8 This is a schematic diagram of the structure of the protective door of the present invention.

[0024] Figure 9 This is the present invention. Figure 8 A magnified structural diagram at point B in the middle.

[0025] Figure label: 10. Bed; 11. Guide plate; 12. Protective door; 13. Pressure plate; 131. Arc groove; 132. Guide slope; 14. Second return spring; 15. Guide rod; 16. Fixed spring; 17. Fixed pressure plate; 18. Fixed insertion rod; 19. Pull rope; 110. Limiting roller; 20. Moving seat structure; 21. Moving frame; 22. Slider; 221. Fixed insertion hole; 23. Connecting crossbeam; 24. Roller; 25. Guide block; 30. Rotary shaft; 31. Turntable; 32. Mounting plate; 33. First return spring; 34. Scraper; 35. Cleaning wiper; 36. Magnetic suction component; 37. Machine base; 38. Drive component; 39. First transmission gear; 310. Second transmission gear; 40. Guide rail; 50. Spindle structure; 51. Feeding system; 52. Collection box. Detailed Implementation

[0026] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0027] like Figures 1 to 9 As shown, a turning apparatus for machining metal shaft parts according to the present invention includes a bed 10. Guide plates 11 are rotatably arranged on both sides inside the bed 10. The guide plates 11 are inclined. A movable seat structure 20 is arranged inside the bed 10. The movable seat structure 20 moves along the length direction of the bed 10. Two sets of cleaning components are arranged on the movable seat structure 20. The cleaning components correspond one-to-one with the guide plates 11. The cleaning components are used to clean the debris adhering to the guide plates 11. A protective door 12 is arranged on the bed 10. A connecting component is arranged between the protective door 12 and the movable seat structure 20. The connecting component is used to control the connection relationship between the protective door 12 and the movable seat structure 20. The connection relationship is divided into a connected state and a disconnected state. When the protective door 12 and the movable seat structure 20 are in the connected state, the connecting component is used to make the movable seat structure 20 move synchronously with the movement of the protective door 12.

[0028] After the machining operation of a metal shaft part is completed, the protective door 12 is opened, and the connecting component drives the moving seat structure 20 to move in the direction of the guide plate 11. At this time, the cleaning component moves synchronously. The synchronous movement of the cleaning component initially cleans the small debris adhering to the guide plate 11. When remapping another metal shaft part, after assembling the metal part, the protective door 12 is closed. At this time, the cleaning component cleans the small debris adhering to the guide plate 11 again, so as to clean the guide plate 11 more completely. The cleaning operation of the guide plate 11 can be performed during the opening and closing of the protective door 12. The opening and closing process of the protective door 12 before and after machining triggers two cleaning actions.

[0029] like Figures 3 to 6The cleaning assembly includes a rotating shaft 30 rotatably connected to the movable base structure 20. One end of the rotating shaft 30 is fixedly connected to a turntable 31. Three mounting plates 32 are rotatably connected to the outer surface of the turntable 31. Each mounting plate 32 is connected to a return spring 33 between itself and the turntable 31. A scraper 34, a cleaning wipe 35, and a magnetic chuck 36 are respectively connected to the side of the three mounting plates 32 away from the return spring 33. The blade width of the scraper 34, the length of the cleaning wipe 35, and the length of the magnetic chuck 36 are all adapted to the width of the guide plate 11. A drive structure is connected to the movable base structure 20. The drive structure is used to drive the rotating shaft 30 to rotate so that the scraper 34, the cleaning wipe 35, or the magnetic chuck 36 come into contact with the guide plate 11 and perform a cleaning operation.

[0030] The drive structure drives the rotating shaft 30 to rotate, which in turn causes the turntable 31 to rotate synchronously. By rotating the turntable 31, the positions of different mounting plates 32 are switched, so that one of the three components, namely scraper 34, cleaning wipe 35, and magnetic suction component 36, can rotate to the cleaning station and come into contact with the guide plate 11. The scraper 34 can scrape off stubborn debris, the cleaning wipe 35 can wipe away cutting fluid and debris mixed in the cutting fluid, and the magnetic suction component 36 can attract metal debris. Thus, the cleaning mode can be selected according to the type of metal shaft parts being processed, thereby ensuring a good cleaning effect on the guide plate 11.

[0031] The drive structure includes a base 37 connected to the movable base structure 20. A drive component 38 is fixedly installed on one side of the base 37. A transmission gear 39 is connected to the output end of the drive component 38. A transmission gear 310 connected to the rotating shaft 30 meshes with the outer surface of the transmission gear 39.

[0032] The drive unit 38 is used to drive the transmission gear 39 to rotate. By starting the drive unit 38, the power is transmitted to the rotating shaft 30 through the meshing of the transmission gear 39 and the transmission gear 310. The stability of the gear transmission ensures the precise rotation angle of the rotating shaft 30, thereby realizing the reliable switching of the cleaning components.

[0033] It should be noted that a protective box (not shown in the figure) is installed on the base 37. Both transmission gear 1 39 and transmission gear 2 310 are located inside the protective box, and a protective cover (not shown in the figure) is provided on the drive component 38. This can prevent debris and other objects from affecting the transmission of the drive component 38, transmission gear 1 39 and transmission gear 2 310, prevent impurities from entering the meshing surface of transmission gear 1 39 and transmission gear 2 310, causing jamming and wear, ensure the smoothness and accuracy of the transmission between transmission gear 1 39 and transmission gear 2 310, and extend the service life of the drive structure. The number of mounting plates 32 can be greater than three, and multiple cleaning wipes 35 can be installed on the remaining plates. When the cleaning ability of a certain cleaning wipe 35 decreases, other cleaning wipes 35 can be used.

[0034] like Figures 3 to 7The movable seat structure 20 includes two movable frames 21. Each movable frame 21 has a slider 22 fixedly connected to one side. The ends of the movable frames 21 are bent at an obtuse angle. A rotating shaft 30 passes through the ends of the movable frames 21 and is rotatably connected to the movable frames 21 through bearings to ensure the stability of the rotating shaft 30 during rotation. A connecting beam 23 is connected between the two movable frames 21 to enable the two movable frames 21 to move synchronously. A pressing and resetting assembly is provided between the movable frames 21 and the guide plate 11. The pressing and resetting assembly is used to make the guide plate 11 swing back and forth to shake off larger debris located on the guide plate 11 and generate shaking, thereby making the cleaning effect of the guide plate 11 better.

[0035] The extrusion reset assembly includes rollers 24 rotatably mounted on one side of the moving frame 21 and pressure plates 13 mounted on the guide plate 11. There are two rollers 24 symmetrically distributed on one side of the moving frame 21. Multiple arc-shaped grooves 131 are provided on one side of the pressure plate 13, and guide inclined surfaces 132 are provided at both ends of the pressure plate 13. The rollers 24 are positioned corresponding to the pressure plates 13. A transition arc surface is provided between two adjacent arc-shaped grooves 131. Multiple reset springs 24 are connected to one side of the guide plate 11. The end of each reset spring 24 away from the guide plate 11 is connected to the inner side of the bed 10. The elastic force of the reset spring 24 is greater than that of the reset spring 13.

[0036] Taking the cleaning wipe 35 to clean fine debris as an example, in the initial state, the upper surface of the guide plate 11 is not parallel to the lower surface of the cleaning wipe 35; from a side view, there is an angle between them. During the movement of the moving frame 21, the roller 24 first contacts and presses against the guide slope 132 of the pressure plate 13, causing the guide plate 11 to rotate downwards. When the roller 24 initially separates from the guide slope 132 and contacts the surface of the pressure plate 13, the lower surface of the cleaning wipe 35 is parallel to and on the same plane as the upper surface of the guide plate 11. At this time, the second return spring 14 is compressed. When the roller 24 moves to the position of the arc groove 131, the reaction force of the second return spring 14 causes the guide plate 11 to rotate upwards and press against the debris. The cleaning wipe 35 and roller 24 alternately roll between the arc groove 131 and the transition arc surface of the pressure plate 13, generating periodic pressure on the pressure plate 13. Since the elastic force of the second return spring 14 is greater than that of the first return spring 33, the mounting plate 32 rotates upward and squeezes the first return spring 33, putting the first return spring 33 in a compressed state. Under the reaction force of the first return spring 33, the cleaning wipe 35 will adhere tightly to the surface of the guide plate 11. As the moving frame 21 moves, the cleaning wipe 35 moves synchronously, so that the cleaning wipe 35 cleans the surface of the guide plate 11 during the periodic oscillation of the guide plate 11. The oscillation of the guide plate 11 can break the adhesion between the fine debris and the guide plate 11, and assist the cleaning component to improve the cleaning effect. Similarly, when processing generates stubborn debris such as filaments or blocks, the control element triggers the drive unit 38 to start, which meshes with the transmission gear 39 and the transmission gear 310 to drive the rotating shaft 30 to rotate, causing the turntable 31 to switch to the corresponding station of the scraper 34. The scraper 34 is used to clean the debris. For processing scenarios with a high proportion of magnetic metal debris, the control element controls the drive structure to switch to the magnetic suction unit 36 ​​station. When the moving seat structure 20 moves, the periodic oscillation of the guide plate 11 causes the debris to detach from the surface adsorption state. The magnetic suction unit 36 ​​uses strong magnetic attraction to attract the scattered metal debris. At the same time, the edge of the cleaning wipe 35 can help wipe away residual cutting fluid, preventing the debris from being affected by the cutting fluid and affecting the adsorption effect. After processing, the magnetic suction unit 36 ​​can be demagnetized to clean the debris attracted by the magnetic suction unit 36.

[0037] It should be noted that the magnetic component 36 is an electromagnet, and an ultra-fine fiber layer can be added to the surface of the cleaning wipe 35 to enhance the adsorption capacity of the cutting fluid. The outer layer of the magnetic component 36 can be wrapped with a wear-resistant stainless steel shell to prevent corrosion by the cutting fluid. The scraper 34 is made of tungsten steel, and the cutting edge is blunted to avoid scratching the surface of the guide plate 11 and to ensure the integrity of the guide plate 11.

[0038] like Figure 4 , Figure 8 and Figure 9The connecting assembly includes fixing holes 221 formed on the slider 22, with at least two fixing holes 221. The bottom end of the protective door 12 is located inside the bed 10. A guide rod 15 and a fixing spring 16 are fixedly connected to the bottom end of the protective door 12. The length direction of both the guide rod 15 and the fixing spring 16 is parallel to the height direction of the bed 10. There are at least two guide rods 15 and at least two fixing springs 16. A part of the guide rod 15 is located inside the fixing spring 16, and the other end of the fixing spring 16 is connected to a fixing spring 16. The pressure plate 17 has two fixed rods 18 fixedly connected to the side of the fixed pressure plate 17 away from the fixed spring 16. The fixed rods 18 are inserted into the fixed insertion hole 221 and the size of the fixed rods 18 and the fixed insertion hole 221 are matched. The guide rod 15 passes through the fixed pressure plate 17 and the fixed pressure plate 17 is slidably connected to the guide rod 15. A pull rope 19 is fixedly connected to one side of the fixed pressure plate 17. The end of the pull rope 19 away from the fixed pressure plate 17 is located outside the protective door 12, and a pull ring is connected to the end of the pull rope 19 away from the fixed pressure plate 17.

[0039] Under normal conditions, the elastic force of the fixed spring 16 pushes the fixed pressure plate 17, causing the fixed rod 18 to be inserted into the fixed insertion hole 221 of the slider 22, thus achieving a rigid connection between the protective door 12 and the movable seat structure 20. At this time, opening and closing the protective door 12 can drive the movable seat structure 20 to move synchronously. When the pull ring is pulled, the pull rope 19 pulls the fixed pressure plate 17 to compress the fixed spring 16, and the fixed rod 18 disengages from the fixed insertion hole 221 of the slider 22, thus disengaging the connection. The movable seat structure 20 can move independently or remain stationary, thus achieving flexible switching between connection and disconnection.

[0040] The protective door 12 has two through holes. The pull rope 19 passes through the inside of the through holes and extends to the outside of the protective door 12. Multiple limiting rollers 110 are installed inside the protective door 12. The pull rope 19 passes through the groove of the limiting roller 110 and rolls with the limiting roller 110 to limit the pull rope 19 and prevent the pull rope 19 from deviating from its position.

[0041] Guide rails 40 are fixedly installed on both sides inside the bed 10. The length direction of the guide rails 40 is parallel to the length direction of the bed 10. The slider 22 is slidably connected to the guide rails 40, and the slider 22 corresponds to the guide rail 40 one by one.

[0042] A control element is installed on the guide plate 11. The control element is electrically connected to the drive component 38. When the processing method for metal shaft parts is selected, the control element controls the drive component 38 to rotate, thereby driving the scraper 34, cleaning wipe 35 or magnetic suction component 36 to rotate to the cleaning station.

[0043] A guide block 25 is provided on the top side of the connecting beam 23, and a guide slope is provided on the guide block 25 to prevent debris from adhering to the connecting beam 23.

[0044] For example, when turning metal shaft parts, the generated chips are generally filamentous chips, or when milling, the generated chips are generally blocky chips. In this case, the scraper 34 can be used to clean the filamentous chips. If fine processes such as knurling are performed, the generated chips are fine chips. In this case, the cleaning wipe 35 is rotated to the cleaning station by the control element, and the fine chips are cleaned by the cleaning wipe 35.

[0045] The bed 10 is internally equipped with a spindle structure 50 and a feed system 51. The bed 10 is also internally equipped with a tool post assembly, an auxiliary system, a CNC system, a guide sleeve structure, etc. The feed system 51 drives the tool post assembly to move. The overall structure and working principle of the tool post assembly, auxiliary system, CNC system, guide sleeve structure, etc. are existing mature technologies, so their specific working principles are not described.

[0046] A collection box 52 is provided on the bed 10. The length of the collection box 52 is greater than the travel of the scraper 34, that is, greater than the travel of the protective door 12, so as to collect all the debris scraped by the scraper 34 from the guide plate 11.

[0047] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0048] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0049] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A turning apparatus for machining metal shaft parts, comprising a bed (10), characterized in that, The bed (10) has guide plates (11) rotatably mounted on both sides of its interior, and a protective door (12) is provided on the bed (10). It also includes: Two movable frames (21) are disposed inside the bed (10). The movable frames (21) move along the length of the bed (10). A slider (22) is fixedly connected to one side of each movable frame (21). A pressing reset assembly is disposed between the movable frame (21) and the guide plate (11). The pressing reset assembly is used to make the guide plate (11) swing back and forth. A rotating shaft (30) is rotatably connected to the movable frame (21), and one end of the rotating shaft (30) is connected to the turntable (31); There are three mounting plates (32), all three mounting plates (32) are rotatably connected to the turntable (31), and each mounting plate (32) is connected to the turntable (31) with a return spring (33). A scraper (34), a cleaning wipe (35) and a magnetic suction piece (36) are respectively installed on one side of the three mounting plates (32). A connecting component is disposed between the protective door (12) and the slider (22). The connecting component is used to control the connection relationship between the protective door (12) and the movable seat structure (20). The connection relationship is divided into a connected state and a disconnected state. When the protective door (12) and the movable seat structure (20) are in the connected state, the connecting component is used to make the movable seat structure (20) move synchronously with the movement of the protective door (12).

2. The turning apparatus for machining metal shaft parts according to claim 1, characterized in that, The extrusion reset assembly includes rollers (24), pressure plates (13), and reset springs (24). The rollers (24) are rotatably mounted on one side of the moving frame (21). There are two rollers (24) symmetrically distributed on one side of the moving frame (21). The pressure plate (13) is connected to the guide plate (11). Multiple arc grooves (131) are provided on one side of the pressure plate (13), and guide inclined surfaces (132) are provided at both ends of the pressure plate (13). The rollers (24) are positioned corresponding to the pressure plate (13). A transition arc surface is provided between two adjacent arc grooves (131). There are multiple reset springs (24). One end of the reset spring (24) is connected to the guide plate (11), and the other end of the reset spring (24) is installed inside the bed (10). The elastic force of the reset spring (24) is greater than that of the reset spring (33).

3. The turning apparatus for machining metal shaft parts according to claim 1, characterized in that, The connecting assembly includes a fixing hole (221), a guide rod (15), a fixing spring (16), a fixing plate (17), a fixing rod (18), and a pull rope (19). The fixing hole (221) is located on one side of the slider (22), and there are at least two fixing holes (221). The guide rod (15) is installed at the bottom of the protective door (12). The fixing spring (16) is sleeved on the outer surface of the guide rod (15), and one end of the fixing spring (16) is connected to the protective door (12), while the other end of the fixing spring (16) is connected to the fixed plate (19). The fixed pressure plate (17) is connected, the guide rod (15) passes through the fixed pressure plate (17) and is slidably connected to the fixed pressure plate (17), there are at least two fixed insertion rods (18), the fixed insertion rods (18) are connected to the fixed pressure plate (17), the size of the fixed insertion rods (18) is adapted to the size of the fixed insertion hole (221), the pull rope (19) is connected to the fixed pressure plate (17), the end of the pull rope (19) away from the fixed pressure plate (17) is located outside the protective door (12), and the end of the pull rope (19) away from the fixed pressure plate (17) is connected to a pull ring.

4. The turning apparatus for machining metal shaft parts according to claim 1, characterized in that, A drive structure is provided between the movable frame (21) and the slider (22). The drive structure is used to drive the rotating shaft (30) to rotate. The drive structure includes a base (37), a drive component (38), a first transmission gear (39), and a second transmission gear (310). The base (37) is connected to the movable frame (21) and the slider (22). The drive component (38) is installed on one side of the base (37). The first transmission gear (39) is connected to the output end of the drive component (38). The second transmission gear (310) meshes with the first transmission gear (39), and the rotating shaft (30) is connected to the second transmission gear (310).

5. A turning apparatus for machining metal shaft parts according to claim 1, characterized in that, A connecting beam (23) is connected between the two movable frames (21). The connecting beam (23) is used to make the two movable frames (21) move synchronously. A guide block (25) is provided on the top side of the connecting beam (23), and a guide slope is provided on the guide block (25).

6. A turning apparatus for machining metal shaft parts according to claim 1, characterized in that, The protective door (12) is equipped with multiple limiting rollers (110) inside. The pull rope (19) passes through the groove of the limiting roller (110) and is tumbled to the limiting roller (110).

7. A turning apparatus for machining metal shaft parts according to claim 1, characterized in that, Guide rails (40) are fixedly installed on both sides inside the bed (10). The length direction of the guide rails (40) is parallel to the length direction of the bed (10). The slider (22) is slidably connected to the guide rails (40), and the slider (22) corresponds to the guide rails (40) one by one.

8. A turning apparatus for machining metal shaft parts according to claim 1, characterized in that, The bed (10) is equipped with a spindle structure (50) and a feed system (51).

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