High-precision CNC single-column vertical turning center

Abstract

This invention discloses a high-precision CNC single-column vertical turning center, relating to the field of single-column vertical turning equipment. It solves the problems of existing single-column vertical turning centers, such as difficulty in efficiently clamping and mounting curved workpieces, and the difficulty in adjusting and switching the fixed tool structure. The invention includes a base, a rotating disk, a turning mechanism, and a fixing mechanism. The turning mechanism includes a cutting tool, and the fixing mechanism includes an inner slider, an outer slider, and an adjusting component. This invention controls the position of the cutting tool and switches the working states of multiple cutting tools through the turning mechanism, improving turning efficiency. The fixing mechanism adjusts the positions of the inner and outer sliders, thereby clamping and fixing workpieces of different sizes, allowing the workpiece to rotate coaxially with the rotating disk to complete the turning operation. The clamping position can be flexibly adjusted according to the shape and position of the workpiece, making the workpiece more stable during rotation and improving the installation efficiency of curved workpieces.

Description

Technical Field

[0001] This invention relates to the field of single-column vertical turning equipment technology, specifically a high-precision CNC single-column vertical turning center. Background Technology

[0002] A CNC single-column vertical turning center is an important piece of equipment used for turning workpieces. It uses a single column as the main supporting component, vertically mounted on a base, providing support and guidance for other components. The pre-programmed machining program is input into the CNC system, driving the worktable, tool post, and other components of the turning center to move according to predetermined trajectories and parameters, thereby achieving automated cutting of the workpiece. During machining, the tool is fixed on the tool post, the worktable rotates the workpiece, and there is relative movement between the tool and the workpiece, completing various cutting operations on the workpiece.

[0003] Existing CNC single-column vertical turning centers typically use about three sets of clamps to hold the outer wall of the material. However, this method is only suitable for fixing cylindrical or annular workpieces. CNC single-column vertical turning centers often need to process curved workpieces. In this case, the operator needs to align the center of the workpiece with the axis of the turntable below, and then fix it with a special fixing structure. At the same time, it is also necessary to ensure that the arc of the workpiece is the same as the arc of the turntable rotation. Only then can the tool complete the turning operation on the workpiece surface by controlling the rotation of the workpiece. This operation method is relatively cumbersome and affects the efficiency of turning curved workpieces. Summary of the Invention

[0004] The purpose of this invention is to provide a high-precision CNC single-column vertical turning center that facilitates efficient clamping and fixing of workpieces of various shapes and improves turning stability, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a high-precision CNC single-column vertical turning center, comprising a base, a turning mechanism, and a fixing mechanism. A rotating disk is rotatably connected to the base. The turning mechanism includes multiple sets of turning tools mounted above the base. The turning mechanism can control the position of the turning tools and switch the working states of the multiple sets of turning tools to improve turning efficiency. The fixing mechanism includes multiple sets of inner and outer sliders mounted above the rotating disk. The rotating disk is provided with adjusting components for adjusting the positions of the inner and outer sliders. The fixing mechanism can clamp and fix workpieces of different sizes by adjusting the positions of the inner and outer sliders, so that the workpiece rotates coaxially with the rotating disk to complete the turning operation. This facilitates efficient clamping and fixing of workpieces of various shapes and improves turning stability.

[0006] Preferably, the adjusting component includes multiple sets of telescopic frames installed between the inner slider and the outer slider. The two ends of the telescopic frames are fixedly connected to the inner slider and the outer slider, respectively. The bottom surfaces of the telescopic frames, the inner slider, and the outer slider are all in contact with and slide against the top surface of the rotating disk. The inner slider and the outer slider are respectively provided with clamping components for clamping the workpiece. The rotating disk is provided with a control component for controlling the position of the inner slider and the outer slider, so as to facilitate the adjustment of the position of the inner slider and the outer slider.

[0007] Preferably, the control component includes a rotating platform rotatably connected to the top surface of the rotating disk. Multiple sets of rotating plates are rotatably connected to the rotating platform, and the multiple sets of rotating plates are stacked. Each set of rotating plates is fixedly connected to a first bracket. A first threaded rod is rotatably connected to the first bracket. The first threaded rod passes through the inner slider and the outer slider. The first threaded rod is threadedly connected to the outer slider. A limiting member is provided at the end of the first threaded rod away from the first bracket to limit the deflection angle of the first threaded rod, so as to facilitate the control of the position state of the outer slider.

[0008] Preferably, the control component further includes a second threaded rod rotatably connected to the first bracket. The second threaded rod passes through the inner slider and the outer slider. The second threaded rod is threadedly connected to the inner slider. The first threaded rod is movably sleeved with the inner wall of the inner slider. The second threaded rod is movably sleeved with the inner wall of the outer slider. The fixing mechanism can control the rotation state of the first threaded rod and the second threaded rod, which facilitates the control of the position state of the inner slider.

[0009] Preferably, the clamping member includes an inner clamping block that is slidably connected to the top surface of the inner slider in a vertical direction. A first spring is fixedly connected to the bottom surface of the inner clamping block, and the bottom end of the first spring is fixedly connected to the inner slider. The top surface of the inner clamping block is flush with the top surfaces of the inner slider and the telescopic frame. An arc-shaped groove is provided on the outer slider, and an outer clamping block is slidably connected in the arc-shaped groove. A second spring that is fixedly connected to the outer slider is fixedly connected to both sides of the outer clamping block, which facilitates clamping the side wall of the workpiece.

[0010] Preferably, the limiting member includes a second bracket that is rotatably connected to the first threaded rod on the same axis. The rotating disk has an annular groove, and multiple sets of insertion slots are evenly provided in the annular groove. A sliding frame is fixedly connected to the bottom surface of the second bracket. The sliding frame is slidably connected to the inner wall of the annular groove. The sliding frame is provided with a fixing member for inserting and fixing the insertion slot, which facilitates limiting the deflection angle of the first threaded rod.

[0011] Preferably, the fixing component includes a tension spring fixedly installed on the side of the sliding frame, a sliding rod slidably connected in the horizontal direction inside the sliding frame, one end of the tension spring being fixedly connected to the sliding rod, and a plug block that can be plugged into the plug slot being fixedly connected to the sliding rod, so as to facilitate plugging and fixing the plug slot.

[0012] Preferably, the fixing mechanism further includes a first motor fixedly installed inside the rotating disk. The output end of the first motor is coaxially fixedly connected to a first bevel gear, and a second bevel gear is coaxially fixedly connected to the second threaded rod. The second bevel gear meshes with the first bevel gear. The rotating disk is provided with a driving component for driving the first threaded rod to rotate, which facilitates control of the rotation state of the first threaded rod and the second threaded rod.

[0013] Preferably, the driving component includes a second motor fixedly installed inside the rotating disk, a drive gear coaxially fixedly connected to the output end of the second motor, a bevel gear ring rotatably connected to the outer wall of the rotating disk, an internal gear ring coaxially fixedly connected to the bevel gear ring, the internal gear ring meshing with the drive gear, and a third bevel gear coaxially fixedly connected to the first threaded rod, the third bevel gear meshing with the bevel gear ring, facilitating the rotation of the first threaded rod.

[0014] Preferably, the turning mechanism further includes a drive frame mounted on the base, the drive frame having a switching disk capable of rotation and switching, the switching disk having multiple sets of guide grooves, guide rods slidably connected in the guide grooves, the turning tool being mounted on both ends of the guide rods, an electric telescopic rod being fixedly connected in the switching disk, the telescopic end of the electric telescopic rod being fixedly connected to the guide rods, facilitating control of the position of the turning tool and switching the working states of multiple sets of turning tools, thereby improving turning efficiency.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] This invention provides a high-precision CNC single-column vertical turning center, which solves the problems of existing single-column vertical turning centers, such as difficulty in efficiently installing and clamping curved workpieces and the difficulty in adjusting and switching the fixed tool structure. By controlling the position of the tool and switching the working state of multiple sets of tools through the turning mechanism, the turning efficiency is improved. By adjusting the position of the inner and outer sliders through the fixing mechanism, workpieces of different sizes can be clamped and fixed, so that the workpiece and the turntable rotate coaxially to complete the turning operation. The clamping position can be flexibly adjusted according to the shape and position of the workpiece, making the workpiece more stable during rotation and improving the installation efficiency of curved workpieces. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a partial structural diagram of the fixing mechanism of the present invention;

[0019] Figure 3 This is a partial structural diagram of the clamping component of the present invention;

[0020] Figure 4 for Figure 3 Enlarged view of region A in the middle;

[0021] Figure 5 This is a partial structural diagram of the driving component of the present invention;

[0022] Figure 6 for Figure 5 Enlarged view of region B in the middle;

[0023] Figure 7 This is a partial structural diagram of the adjusting component of the present invention;

[0024] Figure 8 for Figure 7 Enlarged view of region C;

[0025] Figure 9 This is a partial structural cross-sectional view of the fixing mechanism of the present invention;

[0026] Figure 10 for Figure 9 Enlarged view of region D in the middle;

[0027] Figure 11 This is a partial structural exploded view of the turning mechanism of the present invention.

[0028] In the diagram: 1-Base; 2-Rotating disk; 3-Lathe tool; 4-Inner slider; 5-Outer slider; 6-Adjusting component; 7-Telescopic frame; 8-Clamping component; 9-Rotating table; 10-Rotating plate; 11-First support; 12-First threaded rod; 13-Limiting component; 14-Second threaded rod; 15-Inner clamping block; 16-First spring; 17-Arc groove; 18-Outer clamping block; 19-Second spring; 20-Second support; 21-Annular groove; 2 2-Intercepting slot; 23-Sliding frame; 24-Tension spring; 25-Sliding rod; 26-Intercepting block; 27-First motor; 28-First bevel gear; 29-Second bevel gear; 30-Drive component; 31-Second motor; 32-Drive gear; 33-Bevel gear ring; 34-Internal gear ring; 35-Third bevel gear; 36-Drive frame; 37-Switching disc; 38-Guide groove; 39-Guide rod; 40-Electric telescopic rod; 41-Workpiece. Detailed Implementation

[0029] 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.

[0030] Please see Figures 1-11 This invention provides a technical solution: a high-precision CNC single-column vertical turning center, including a base 1, a turning mechanism, and a fixing mechanism. A rotating disk 2 is rotatably connected to the base 1. The turning mechanism includes multiple sets of turning tools 3 installed above the base 1. The turning mechanism can control the position of the turning tools 3 and switch the working state of the multiple sets of turning tools 3 to improve turning efficiency. The fixing mechanism includes multiple sets of inner sliders 4 and outer sliders 5 installed above the rotating disk 2. The rotating disk 2 is provided with adjusting parts 6 for adjusting the position of the inner sliders 4 and outer sliders 5. The fixing mechanism can clamp and fix workpieces 41 of different sizes by adjusting the position of the inner sliders 4 and outer sliders 5, so that the workpieces 41 and the rotating disk 2 rotate coaxially to complete the turning operation.

[0031] The adjusting component 6 includes multiple sets of telescopic frames 7 installed between the inner slider 4 and the outer slider 5. The two ends of the telescopic frame 7 are fixedly connected to the inner slider 4 and the outer slider 5 respectively. The bottom surfaces of the telescopic frame 7, the inner slider 4 and the outer slider 5 are all in contact with and slide against the top surface of the rotating disk 2. The inner slider 4 and the outer slider 5 are respectively provided with clamping components 8 for clamping the workpiece 41. The rotating disk 2 is provided with control components for controlling the position state of the inner slider 4 and the outer slider 5.

[0032] The control component includes a rotating platform 9 rotatably connected to the top surface of the rotating disk 2. Multiple sets of rotating plates 10 are rotatably connected to the rotating platform 9. The multiple sets of rotating plates 10 are stacked. Each set of rotating plates 10 is fixedly connected to a first bracket 11. A first threaded rod 12 is rotatably connected to the first bracket 11. The first threaded rod 12 passes through the inner slider 4 and the outer slider 5. The first threaded rod 12 is threadedly connected to the outer slider 5. A limiting member 13 is provided at the end of the first threaded rod 12 away from the first bracket 11 to limit the deflection angle of the first threaded rod 12.

[0033] The control component also includes a second threaded rod 14 rotatably connected to the first bracket 11. The second threaded rod 14 passes through the inner slider 4 and the outer slider 5. The second threaded rod 14 is threadedly connected to the inner slider 4. The first threaded rod 12 is movably sleeved with the inner wall of the inner slider 4. The second threaded rod 14 is movably sleeved with the inner wall of the outer slider 5. The fixing mechanism can control the rotation state of the first threaded rod 12 and the second threaded rod 14.

[0034] The clamping member 8 includes an inner clamping block 15 that is slidably connected to the top surface of the inner slider 4 in a vertical direction. A first spring 16 is fixedly connected to the bottom surface of the inner clamping block 15. The bottom end of the first spring 16 is fixedly connected to the inner slider 4. The top surface of the inner clamping block 15 is flush with the top surfaces of the inner slider 4 and the telescopic frame 7. An arc-shaped groove 17 is provided on the outer slider 5. An outer clamping block 18 is slidably connected in the arc-shaped groove 17. A second spring 19 that is fixedly connected to the outer slider 5 is fixedly connected to both sides of the outer clamping block 18.

[0035] The limiting member 13 includes a second bracket 20 that is rotatably connected to the first threaded rod 12 on the same axis. An annular groove 21 is provided on the rotating disk 2. Multiple sets of insertion slots 22 are evenly provided in the annular groove 21. A sliding frame 23 is fixedly connected to the bottom surface of the second bracket 20. The sliding frame 23 is slidably connected to the inner wall of the annular groove 21. A fixing member for inserting and fixing the insertion slots 22 is provided in the sliding frame 23. The fixing member includes a tension spring 24 fixedly installed on the side of the sliding frame 23. A sliding rod 25 is slidably connected in the horizontal direction in the sliding frame 23. One end of the tension spring 24 is fixedly connected to the sliding rod 25. An insertion block 26 that can be inserted into the insertion slot 22 is fixedly connected to the sliding rod 25.

[0036] The fixing mechanism also includes a first motor 27 fixedly installed in the rotating disk 2. The output end of the first motor 27 is coaxially fixedly connected to a first bevel gear 28. A second bevel gear 29 is coaxially fixedly connected to the second threaded rod 14. The second bevel gear 29 meshes with the first bevel gear 28. The rotating disk 2 is provided with a driving component 30 for driving the first threaded rod 12 to rotate.

[0037] The driving component 30 includes a second motor 31 fixedly installed inside the rotating disk 2. The output end of the second motor 31 is coaxially fixedly connected to a driving gear 32. A bevel gear ring 33 is rotatably connected to the outer wall of the rotating disk 2. An internal gear ring 34 is coaxially fixedly connected to the bevel gear ring 33 and meshes with the driving gear 32. A third bevel gear 35 is coaxially fixedly connected to the first threaded rod 12 and meshes with the bevel gear ring 33.

[0038] The turning mechanism also includes a drive frame 36 mounted on the base 1. The drive frame 36 is provided with a switching disk 37 that can be rotated and switched. Multiple sets of guide grooves 38 are provided on the switching disk 37. Guide rods 39 are slidably connected in the guide grooves 38. The cutting tool 3 is installed at both ends of the guide rods 39. An electric telescopic rod 40 is fixedly connected in the switching disk 37. The telescopic end of the electric telescopic rod 40 is fixedly connected to the guide rod 39.

[0039] Working principle: By pulling the sliding rod 25, the insertion block 26 and the insertion slot 22 are released, allowing the second bracket 20 to rotate. This causes the entire assembly of the second bracket 20, the first threaded rod 12, the first bracket 11, and the rotating plate 10 to rotate around the rotating platform 9, thereby adjusting the angle between adjacent sets of first threaded rods 12. The first threaded rod 12 drives the inner slider 4 and the outer slider 5 to slide synchronously. The positions of multiple sets of inner sliders 4 and outer sliders 5 can be adjusted according to the shape and position of the object to be clamped. When a cylindrical structure needs to be clamped, multiple sets of first threaded rods 12 are distributed and fixed by insertion block 26 and insertion slot 22, thus preventing the cylindrical structure from rotating. Above the rotating table 9, the top surface of the rotating table 9 supports the workpiece 41. At this time, the top surface of the workpiece 41 will press against the top surface of the inner clamping block 15, causing the inner clamping block 15 to slide down into the inner slider 4. The top surfaces of the inner slider 4 and the telescopic frame 7 can simultaneously support the bottom surface of the workpiece 41. Then, the second motor 31 is started, which drives the drive gear 32 to rotate the inner gear ring 34 and the bevel gear ring 33. The bevel gear ring 33 synchronously drives multiple sets of third bevel gears 35 to rotate the first threaded rod 12, thereby driving the outer sliders 5 around to slide and clamp to one side of the rotating table 9. When multiple sets of outer clamping blocks 18 are in contact with the outer wall of the workpiece 41, it indicates that the clamping is completed. At this time, the workpiece 41 and the rotating disk 2 can rotate coaxially.

[0040] When it is necessary to clamp the annular workpiece 41, the workpiece 41 is placed on the telescopic frame 7 between the inner slider 4 and the outer slider 5. Then, the outer slider 5 is controlled to clamp the outer wall of the workpiece 41. The first motor 27 is started to drive the first bevel gear 28 to rotate. The first bevel gear 28 drives the second bevel gear 29 to rotate the second threaded rod 14, thereby causing the inner slider 4 to slide synchronously in all directions. The inner clamping block 15 clamps the inner wall of the workpiece 41. Finally, by ensuring that multiple sets of inner clamping blocks 15 and outer clamping blocks 18 are simultaneously in contact with the inner and outer walls of the workpiece 41, the positioning and installation of the workpiece 41 can be completed.

[0041] When it is necessary to clamp the arc-shaped workpiece 41, multiple sets of first threaded rods 12 need to be rotated to one side and fixed so that the included angle between the two outermost sets of first threaded rods 12 is slightly smaller than the included angle of the arc length of the arc-shaped workpiece 41. The workpiece 41 is placed between the inner slider 4 and the outer slider 5. The above clamping steps of the annular workpiece 41 are repeated. The inner and outer sides of the arc-shaped workpiece 41 can be clamped simultaneously by the inner clamping block 15 and the outer clamping block 18, while ensuring that the center of the arc-shaped workpiece 41 is the same as the center of the rotating disk 2.

[0042] The rotating disk 2 drives the inner clamping block 15 and the outer clamping block 18 to rotate the workpiece 41. During the clamping and rotation process, the outer clamping block 18 may deflect relatively during the driving process and slide in the arc groove 17. During the sliding process, since the positions of both sides of the arc groove 17 are closer to the axis of the rotating disk 2, the clamping force of the outer clamping block 18 on the outer wall of the workpiece 41 gradually increases, making the driving of the workpiece 41 more stable and avoiding the workpiece 41 from slipping.

[0043] The switching plate 37 is raised, lowered, and slid horizontally by the drive frame 36, thereby changing the position of the switching plate 37. By controlling the rotation of the switching plate 37, the required cutting tool 3 is switched and rotated to the required position to machine the workpiece 41 below. At the same time, the extension length of the guide rod 39 can be adjusted by the electric telescopic rod 40 to adjust the extension degree of the cutting tool 3, thereby improving the machining efficiency. After machining is completed, the switching plate 37 is raised, the rotating plate 2 is stopped, and the first motor 27 and the second motor 31 drive in opposite directions, so that the inner slider 4 slides to the side of the rotating table 9 and the outer slider 5 slides to the side of the second support 20, releasing the clamping of the workpiece 41. Then the workpiece 41 can be removed from the top of the rotating plate 2.

[0044] During the sliding process of the inner slider 4 and the outer slider 5, the telescopic frame 7 will be driven to extend and retract, and will always be able to provide stable support for the workpiece 41 above. The bottom surfaces of the inner slider 4, the outer slider 5 and the telescopic frame 7 can all maintain contact with the top surface of the rotating disk 2 during the adjustment of the first threaded rod 12, making the support for the workpiece 41 more stable. When the workpiece 41 is heavy, after adjusting the angle of the first threaded rod 12, a support block can be placed on the top surface of the rotating disk 2 between adjacent first threaded rods 12. The top surface of the support block is flush with the top surface of the telescopic frame 7, and then the workpiece 41 is placed on the telescopic frame 7 and the support block for joint support.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0046] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. High-precision CNC single-column vertical turning center, characterized by, The utility model relates to a multi-group turning mechanism of lathe, including: Base (1), rotatory connection has rotary disc (2) on base (1), Still include: Turning mechanism, the turning mechanism includes the multiple sets of turning tool (3) installed above base (1), the turning mechanism can control the position of turning tool (3) and switch the working condition of multiple sets of turning tool (3), The fixing mechanism comprises a plurality of inner sliding blocks (4) and outer sliding blocks (5) installed above the rotating disc (2), the rotating disc (2) is provided with an adjusting part (6) for adjusting the positions of the inner sliding blocks (4) and the outer sliding blocks (5), the fixing mechanism can clamp and fix workpieces of different sizes by adjusting the positions of the inner sliding blocks (4) and the outer sliding blocks (5), so that the workpieces rotate coaxially with the rotating disc (2) to complete turning operation, the adjusting part (6) comprises a plurality of telescopic supports (7) installed between the inner sliding blocks (4) and the outer sliding blocks (5), the two ends of the telescopic supports (7) are fixedly connected with the inner sliding blocks (4) and the outer sliding blocks (5) respectively, the bottom surfaces of the telescopic supports (7), the inner sliding blocks (4) and the outer sliding blocks (5) are in close sliding contact with the top surface of the rotating disc (2), the inner sliding blocks (4) and the outer sliding blocks (5) are respectively provided with clamping parts (8) for clamping workpieces, the rotating disc (2) is provided with a control part for controlling the position states of the inner sliding blocks (4) and the outer sliding blocks (5), the control part comprises a rotating table (9) rotatably connected with the top surface of the rotating disc (2), a plurality of rotating plates (10) are rotatably connected with the rotating table (9), the plurality of rotating plates (10) are stacked, a first support (11) is fixedly connected with each of the plurality of rotating plates (10), a first threaded rod (12) is rotatably connected with the first support (11), the first threaded rod (12) penetrates through the inner sliding blocks (4) and the outer sliding blocks (5), the first threaded rod (12) is threadedly connected with the outer sliding blocks (5), one end of the first threaded rod (12) away from the first support (11) is provided with a limiting part (13) for limiting the deflection angle of the first threaded rod (12), the control part further comprises a second threaded rod (14) rotatably connected with the first support (11), the second threaded rod (14) penetrates through the inner sliding blocks (4) and the outer sliding blocks (5), the second threaded rod (14) is threadedly connected with the inner sliding blocks (4), the first threaded rod (12) is movably sleeved with the inner wall of the inner sliding blocks (4), the second threaded rod (14) is movably sleeved with the inner wall of the outer sliding blocks (5), the fixing mechanism can control the rotating states of the first threaded rod (12) and the second threaded rod (14), the fixing mechanism further comprises a first motor (27) fixedly installed in the rotating disc (2), a first bevel gear (28) is coaxially fixedly connected with the output end of the first motor (27), a second bevel gear (29) is coaxially fixedly connected with the second threaded rod (14), the second bevel gear (29) is engaged with the first bevel gear (28), the rotating disc (2) is provided with a driving part (30) for driving the first threaded rod (12) to rotate, the driving part (30) comprises a second motor (31) fixedly installed in the rotating disc (2),The output end of the second motor (31) is coaxially fixedly connected with a driving gear (32), the outer wall of the rotating disc (2) is rotationally connected with a bevel gear ring (33), the bevel gear ring (33) is coaxially fixedly connected with an inner gear ring (34), the inner gear ring (34) is engaged with the driving gear (32), the first threaded rod (12) is coaxially fixedly connected with a third bevel gear (35), and the third bevel gear (35) is engaged with the bevel gear ring (33).

2. The high-precision CNC single column vertical turning center according to claim 1, characterized in that: The clamping piece (8) includes the inner clamping block (15) of vertical direction sliding connection with the top surface of inner sliding block (4), the bottom surface of inner clamping block (15) is fixedly connected with first spring (16), the bottom end of first spring (16) is fixedly connected with inner sliding block (4), the top surface of inner clamping block (15) can be flush with the top surface of inner sliding block (4) and telescopic stand (7), the arc slot (17) is set up in outer sliding block (5), the outer clamping block (18) is slidably connected in arc slot (17), the both sides of outer clamping block (18) are fixedly connected with second spring (19) fixedly connected with outer sliding block (5).

3. The high-precision CNC single column vertical turning center according to claim 2, characterized in that: The limiting piece (13) includes the second support (20) of coaxial rotation connection with first threaded rod (12), the annular groove (21) is set up on rotary disc (2), the multiple sets of insertion slot (22) are evenly set up in annular groove (21), the bottom surface of second support (20) is fixedly connected with sliding frame (23), sliding frame (23) is slidably connected with the inner wall of annular groove (21), the fixing piece for inserting and fixing insertion slot (22) is arranged in sliding frame (23).

4. The high-precision CNC single column vertical turning center according to claim 3, characterized in that: The fixing piece includes the tension spring (24) fixedly installed in the side surface of sliding frame (23), the sliding rod (25) is slidably connected in sliding frame (23) along the horizontal direction, one end of tension spring (24) is fixedly connected with sliding rod (25), the insertion block (26) that can be inserted with insertion slot (22) is fixedly connected on sliding rod (25).

5. The high-precision CNC single column vertical turning center of claim 1, wherein: The turning mechanism further includes the driving frame (36) installed on base (1), the switching disc (37) capable of rotating switching is arranged on driving frame (36), a plurality of guide grooves (38) are formed in switching disc (37), a guide rod (39) is slidably connected in guide groove (38), the turning tool (3) is installed at both ends of guide rod (39), the electric telescopic rod (40) is fixedly connected in switching disc (37), and the telescopic end of electric telescopic rod (40) is fixedly connected with guide rod (39).

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