A turret assembly for a CNC lathe

Abstract

This invention relates to the field of lathe tool post technology and discloses a CNC lathe tool post assembly. A locking bolt is screwed to the top of the side of the tool post base. A horizontal inner groove for mounting the tool is provided in the middle of the side of the tool post base. A vertical receiving groove is provided in the middle of the side of the tool post base, and a sliding fastening bracket is slidably connected in the vertical receiving groove. The top of the sliding fastening bracket has a contact inclined groove structure corresponding to the bottom of the locking bolt. The interior of the vertical auxiliary fastener also has a vertical sliding drive component and two sets of left and right rotating auxiliary fastening arms that mesh with the vertical sliding drive component. This invention uses a single power input from the locking bolt, combined with a multi-stage mechanical linkage structure, eliminating the need for additional power components, simplifying the equipment structure, and reducing costs and failure rates. The vertical latching seat, with its upper and lower latching protrusions, achieves rapid positioning. The gears and teeth mesh to drive the two sets of rotating auxiliary fastening arms to symmetrically grip the tool, eliminating unilateral gaps and preventing tool wobbling.

Description

Technical Field

[0001] This invention relates to the field of lathe tool post technology, specifically to a tool post assembly for a CNC lathe. Background Technology

[0002] Existing CNC lathe tool turret assemblies mostly use a single bolt-locking method, lacking dedicated snap-fit ​​positioning and auxiliary clamping structures. This results in poor tool fixation stability and susceptibility to radial wobble and clearance misalignment during machining, severely impacting machining accuracy. Traditional tool turrets lack multi-stage linkage locking structures, relying mostly on additional power components such as motors and cylinders. This leads to complex equipment structures, higher manufacturing costs, and a higher probability of failure, resulting in cumbersome tool assembly and disassembly processes and low operational efficiency. Therefore, we have introduced a new CNC lathe tool turret assembly. Summary of the Invention

[0003] The purpose of this invention is to provide a tool holder assembly for a CNC lathe to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a tool holder assembly for a CNC lathe, comprising a tool holder base and a vertical auxiliary fastener that is snapped together on the side of the tool holder base. A locking bolt is screwed onto the top of the side of the tool holder base. A horizontal inner groove for mounting a tool is provided in the middle of the side of the tool holder base. A vertical receiving groove is provided in the middle of the side of the tool holder base. A sliding fastening bracket is slidably connected in the vertical receiving groove. The top of the sliding fastener is provided with a contact groove structure corresponding to the bottom of the locking bolt; The vertical auxiliary fastener is also provided with a vertical sliding drive component and two sets of left and right rotating auxiliary fastening arms that mesh with the vertical sliding drive component. After the locking bolts abut against the through contact groove structure and lock the tool, the upper and lower latching protrusions on the outer side of the sliding fastener extend out of the vertical receiving groove simultaneously. Then, the vertical auxiliary fastener is snapped into place with the upper and lower latching protrusions, so that the vertical auxiliary fastener is in close contact with the outer wall of the tool. At the same time, the vertical sliding drive abuts against the upper end of the lower latching protrusion, so that the vertical sliding drive drives the left and right sets of rotating auxiliary fastening arms to rotate and open, forming contact against the outer wall of the tool.

[0005] Preferably, the tool holder includes a square base, a square boss located at the middle of the upper end of the square base, and a square top seat located at the upper end of the square boss; The vertical receiving groove includes a T-shaped groove on the side of the square base and an L-shaped groove on the side between the square boss and the square top seat. The sliding fastener includes a sliding seat that slides into the T-shaped groove and an L-shaped sliding bracket connected to the bottom of the sliding seat; The contact groove structure includes a first contact groove and a sliding seat symmetrically arranged on the inner side wall of the sliding seat, and a second contact groove is provided on the sliding seat; The inner wall of the T-shaped groove is provided with a reserved groove for the insertion of the sliding seat.

[0006] Preferably, the horizontal inner groove is formed by the lower end of the square base, the outer wall of the square boss, and the upper end of the square top seat; The square top seat is provided with an end cap.

[0007] Preferably, the upper buckle protrusion is located at the middle of the outer end of the sliding seat, and the lower buckle protrusion is located at the outer end of the bottom of the L-shaped sliding frame.

[0008] Preferably, the square base is equipped with a sealing plate on its side for sealing the T-shaped groove, and the sealing plate has a through groove in the middle for the upper buckle protrusion to extend out. The outer wall of the sliding seat is symmetrically provided with two sets of first spring holes on the left and right sides. A first reset spring is provided inside the first spring hole, and the other end of the first reset spring abuts against the inner wall of the sealing plate.

[0009] Preferably, the vertical auxiliary fastener is a vertical buckle seat, the inner wall of the vertical buckle seat is provided with a vertical buckle groove in the center, the vertical buckle groove extends to the bottom of the vertical buckle seat, and the upper buckle protrusion and the lower buckle protrusion are both buckled in the vertical buckle groove; The upper part of the vertical buckle groove is provided with a pre-installation enlargement groove for inserting the upper buckle protrusion.

[0010] Preferably, the lower part of the outer side wall of the vertical buckle seat is provided with an installation groove, and a connecting limiting groove is provided between the installation groove and the vertical buckle groove; The vertical sliding drive component includes a vertical sliding plate and an abutting protrusion provided at the bottom of the inner wall of the vertical sliding plate. The abutting protrusion extends into the vertical buckle groove via a connecting limiting groove.

[0011] Preferably, a cover is installed on the outside of the mounting groove.

[0012] Preferably, the vertical sliding plate has symmetrical second spring holes on both sides of its top, and a second return spring is provided inside the second spring hole. The top of the second return spring is connected to the top wall of the mounting groove.

[0013] Preferably, the inner wall of the vertical buckle seat is symmetrically provided with side grooves for installing the rotating auxiliary fastening arm. The bottom of the rotating auxiliary fastening arm is fixed with a rotating shaft. The rotating shaft extends through the side groove into the mounting groove and is fixed with a gear. The gear meshes with the teeth on the side of the vertical sliding plate.

[0014] Compared with existing technologies, the advantages of this invention are: This invention uses a single power input via a locking bolt, combined with a multi-stage mechanical linkage structure, eliminating the need for additional power components, thus simplifying the equipment structure and reducing costs and failure rates. During disassembly, components automatically reset, simplifying tool assembly and disassembly operations. The vertical latching seat, with its upper and lower latching protrusions, achieves rapid positioning. Combined with gears and tooth meshing, it drives two sets of rotating auxiliary fastening arms to symmetrically grip the tool, eliminating unilateral gaps and preventing tool wobbling. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the tool after it has been locked and fixed according to the present invention. Figure 2 This is an exploded structural diagram of the vertical auxiliary fastener installation of the present invention; Figure 3 This is an exploded structural diagram of the assembly of the sliding fastener, the sealing plate, and the tool holder of the present invention; Figure 4 This is a schematic diagram of the structure of the tool holder of the present invention; Figure 5 This is a three-dimensional structural diagram of the sliding fastener of the present invention; Figure 6 For the present invention Figure 5 A schematic diagram of the three-dimensional structure from another perspective; Figure 7 This is a three-dimensional structural diagram showing the upper and lower buckle protrusions extending after the locking bolt of the present invention is tightened; Figure 8 This is a three-dimensional structural diagram of the connection between the locking bolt and the cutting tool and the sliding fastener after the locking bolt of the present invention is tightened; Figure 9 This is an exploded structural diagram of the assembly of the cap and the vertical buckle seat of the present invention; Figure 10 For the present invention Figure 9 A schematic diagram of the three-dimensional structure from another perspective; Figure 11 This is a schematic diagram of the structure of the vertical buckle seat of the present invention, which is attached to the side of the tool holder. Figure 12 For the present invention Figure 11 The diagram shows the structure of the vertical buckle seat and the sliding fastening bracket. Figure 13 This is a three-dimensional structural diagram of the vertical buckle seat of the present invention when it is snapped into place downwards; Figure 14 For the present invention Figure 12 The diagram shows the structure of the vertical buckle seat and the sliding fastening bracket. Figure 15 For the present invention Figure 14 The diagram shows the structure of the vertical sliding drive, the rotating auxiliary fastening arm, and the sliding fastening bracket.

[0016] In the diagram: 1. Square base; 2. Square boss; 3. Square top seat; 4. End cap; 5. Locking bolt; 6. Sealing plate; 7. Vertical buckle seat; 8. Cover; 9. Rotation auxiliary fastening arm; 10. Cutting tool; 11. Upper buckle protrusion; 12. Lower buckle protrusion; 13. Through slot; 14. T-slot; 15. Reserved slot; 16. L-slot; 17. L-shaped sliding frame; 18. Sliding seat; 19. First return spring; 20. First spring hole; 21. First contact groove; 22. Second contact groove; 23. Sliding seat; 24. Mounting groove; 25. Vertical sliding plate; 26. Tooth; 27. Gear; 28. Second spring hole; 29. ​​Second return spring; 30. Side groove; 31. Vertical buckle groove; 32. Connecting limit groove; 33. Abutment protrusion; 34. Pre-installation enlargement groove; 35. Rotating shaft. Detailed Implementation

[0017] 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.

[0018] Example: Please see Figures 1-15 The present invention provides a technical solution: A tool holder assembly for a CNC lathe includes a tool holder base and vertical auxiliary fasteners that are snapped together on the side of the tool holder base. The tool holder base includes a square base 1, a square boss 2 located at the middle of the upper end of the square base 1, and a square top seat 3 located at the upper end of the square boss 2. The three are integrally formed fixed structures, which can accurately form a double-groove structure of horizontal inner groove and vertical receiving groove, respectively meeting the requirements of tool pre-installation and sliding component guiding installation.

[0019] A locking bolt 5 is screwed onto the top side of the tool holder. The bolt is threaded onto the top side of the square top seat 3 and is arranged vertically downwards. The bottom end of the locking bolt 5 can penetrate and press against the contact groove structure of the sliding fastening frame. It is the core power input component of the entire assembly.

[0020] Employing threaded drive, the locking force can be precisely adjusted to meet the locking requirements of different tool sizes. The mechanical force of the vertical downward pressing of the locking bolt 5 directly triggers all subsequent linkage structures, eliminating the need for additional power components such as motors and cylinders, thus simplifying the equipment structure and reducing manufacturing costs and the probability of failure.

[0021] The tool holder has a horizontal inner groove in the middle of its side for mounting the tool 10. The horizontal inner groove is formed by the lower end of the square base 1, the outer wall of the square boss 2, and the upper end of the square top seat 3. The tool holder has a vertical receiving groove in the middle of its side. The vertical receiving groove includes a T-shaped groove 14 on the side of the square base 1 and an L-shaped groove 16 on the side between the square boss 2 and the square top seat 3. The T-groove 14+L-groove 16 double-guide sliding structure limits the horizontal offset of the sliding fastener, ensuring smooth and precise telescopic movement without jamming or shaking. A sliding fastener is slidably connected in the vertical receiving groove; The sliding fastener includes a sliding seat 18 that slides into the T-slot 14 and an L-shaped sliding bracket 17 connected to the bottom of the sliding seat 18; The top of the sliding fastener is provided with a contact groove structure corresponding to the bottom of the locking bolt 5; The contact groove structure includes a first contact groove 21 and a sliding seat 23 symmetrically arranged on the inner side wall of the sliding seat 18, and a second contact groove 22 is provided on the sliding seat 23. The inclined groove and inclined surface force guiding design can convert the vertical downward pressure of the locking bolt 5 into the horizontal external sliding force of the component, making the force conversion efficient and stable. The inner wall of the T-shaped groove 14 is provided with a reserved groove 15 for the insertion of the sliding seat 23.

[0022] The square top seat 3 is equipped with an end cap 4.

[0023] The upper and lower double buckle protrusion structure (the upper buckle protrusion 11 is set at the middle of the outer end of the sliding seat 18, and the lower buckle protrusion 12 is set at the bottom outer end of the L-shaped sliding frame 17) can realize the upper and lower two-point positioning buckle with the vertical auxiliary fastener, with strong fixing symmetry and high limiting accuracy. A sealing plate 6 for sealing the T-shaped groove 14 is installed on the side of the square base 1. The sealing plate 6 has a through groove 13 in the middle for the upper buckle protrusion 11 to extend out. The sealing plate 6 can block the outside of the T-shaped groove 14, thereby limiting the sliding seat 18. At the same time, it provides guidance for the extension and retraction of the upper buckle protrusion 11 through the through groove 13, ensuring accurate sliding trajectory.

[0024] The outer wall of the sliding seat 18 is symmetrically provided with two sets of first spring holes 20 on the left and right sides. A first return spring 19 is provided inside the first spring hole 20, and the other end of the first return spring 19 abuts against the inner wall of the sealing plate 6.

[0025] The first reset spring 19 can realize the automatic retraction and reset of the component, and the disassembly and assembly of the tool does not require manual adjustment of the sliding component, making the operation convenient and efficient.

[0026] The vertical auxiliary fastener is also equipped with a vertical sliding drive and two sets of left and right rotating auxiliary fastening arms 9 that mesh with the vertical sliding drive; The vertical auxiliary fastener is a vertical snap-fit ​​seat 7. The inner wall of the vertical snap-fit ​​seat 7 is provided with a vertical snap-fit ​​groove 31 in the center. The vertical snap-fit ​​groove 31 extends to the bottom of the vertical snap-fit ​​seat 7. The upper snap-fit ​​protrusion 11 and the lower snap-fit ​​protrusion 12 are both snapped in the vertical snap-fit ​​groove 31. The upper part of the vertical buckle groove 31 is provided with a pre-installation enlargement groove 34 for inserting the upper buckle protrusion 11.

[0027] The design of the vertical snap-fit ​​groove (vertical snap-fit ​​groove 31) combined with the expansion groove (pre-installation expansion groove 34) greatly reduces the difficulty of assembly alignment, quickly achieves snap-fit ​​positioning, and has high assembly efficiency.

[0028] The lower part of the outer wall of the vertical buckle seat 7 is provided with an installation groove 24, and a connecting limiting groove 32 is provided between the installation groove 24 and the vertical buckle groove 31; The vertical sliding drive includes a vertical sliding plate 25 and an abutting protrusion 33 provided at the bottom of the inner wall of the vertical sliding plate 25. The abutting protrusion 33 extends into the vertical buckling groove 31 through the connecting limiting groove 32.

[0029] The connecting limiting groove 32 can limit the movement trajectory of the vertical sliding drive component, ensuring transmission accuracy.

[0030] The cover 8 can seal the internal transmission structure of the mounting groove 24, protect the precision components such as the gear 27 and the second return spring 29, avoid chip wear, and extend the service life of the components; the integrated snap-fit ​​seat structure is rigid and fits the outer wall of the tool to effectively suppress the overall vibration of the tool 10.

[0031] A cover 8 is installed on the outside of the mounting slot 24.

[0032] The top of the vertical sliding plate 25 is symmetrically provided with second spring holes 28 on both sides. The second spring holes 28 are provided with second return springs 29, and the top of the second return springs 29 are connected to the top wall of the mounting groove 24.

[0033] The inner walls of the vertical buckle seat 7 are symmetrically provided with side grooves 30 for installing the rotating auxiliary fastening arm 9. The bottom of the rotating auxiliary fastening arm 9 is fixed with a rotating shaft 35. The rotating shaft 35 extends through the side groove 30 into the mounting groove 24 and is fixed with a gear 27. The gear 27 meshes with the teeth 26 on the side of the vertical sliding plate 25.

[0034] The automatic sliding drive is achieved by relying on the mechanical squeezing force of the vertical buckle seat 7 and the upper buckle protrusion 11 and the lower buckle protrusion 12 buckle assembly, without the need for manual intervention, and the locking action is linked throughout the process. The second return spring 29 can ensure that the vertical slide plate 25 automatically returns to its original position, unlocks the transmission structure, and is suitable for tool disassembly and assembly. The design of the left and right symmetrical double fastening arms (rotation auxiliary fastening arm 9) can simultaneously clamp from both ends of the outer wall of the tool 10, with uniform force distribution, completely eliminating the gap on one side of the tool 10, and greatly improving the stability of the tool 10 during machining. The teeth 26 and gear 27 mesh precisely, with small transmission clearance and stable power transmission, allowing for precise control of the opening of the rotary auxiliary fastening arm 9. The meshing transmission between gear 27 and teeth 26 is highly accurate and has a fast response speed, enabling a synchronized clamping effect where the rotary auxiliary fastening arm 9 snaps into place on the cutter 10 after opening.

[0035] After the locking bolts 5 abut against the through contact groove structure and lock the tool 10, the upper buckle protrusion 11 and lower buckle protrusion 12 on the upper and lower ends of the sliding fastener extend out of the vertical receiving groove simultaneously. Then, the vertical auxiliary fastener is snapped into place with the upper buckle protrusion 11 and lower buckle protrusion 12, so that the vertical auxiliary fastener is in close contact with the outer wall of the tool 10. At the same time, the vertical sliding drive abuts against the upper end of the lower buckle protrusion 12, so that the vertical sliding drive drives the left and right sets of rotating auxiliary fastening arms 9 to rotate and open, forming contact against the outer wall of the tool 10.

[0036] It adopts a single power input and multi-stage mechanical linkage structure. The triple locking effect of sliding positioning, buckle fixing and double-sided clamping can be triggered in sequence by simply turning the locking bolt 5. The mechanical linkage is delayed and error-free throughout the process. Each structure is mutually limiting and driving, with high integration and compact size, suitable for the compact installation space of CNC lathes; the double spring reset structure (first reset spring 19, second reset spring 29) realizes automated disassembly and reset, making operation simple; the multi-point, all-round locking structure effectively solves the problems of easy tool shaking, low locking accuracy, and cumbersome disassembly and assembly of traditional tool holders, significantly improving the machining accuracy and operation efficiency of lathes, while the protective structure is perfect, resulting in a longer service life and a lower failure rate.

[0037] Specifically, when using it: The tool turret assembly of this CNC lathe achieves automatic, bidirectional, and multi-point locking and fixing of the tool 10 through a multi-stage linkage structure of locking bolt 5 pressing linkage, sliding buckle positioning, and sliding gear meshing drive. The entire locking, positioning, and auxiliary reinforcement actions are completed by mechanical structure linkage without the need for additional independent drive components, which effectively improves the stability of CNC lathe tool installation and the convenience of disassembly and assembly. The overall workflow is divided into four stages: tool pre-installation, main locking linkage, auxiliary buckle positioning, and secondary clamping reinforcement.

[0038] Phase 1: Tool pre-installation and positioning.

[0039] The tool holder is composed of a square base 1, a square boss 2, and a square top seat 3 to form a horizontal inner groove. The operator inserts the tool 10 horizontally into the horizontal inner groove to complete the initial positioning of the tool 10. The tool 10 is close to the outer wall of the square boss 2, providing a basic positioning reference for subsequent locking operations.

[0040] Second stage: The main locking and sliding fastening bracket extend in conjunction.

[0041] By turning the locking bolt 5 on the top side of the tool holder, the locking bolt 5 is moved downward, gradually pressing against the contact groove structure (first contact groove 21, second contact groove 22) on the top of the sliding fastener.

[0042] That is, when the first locking bolt 5 is gradually tightened, the bottom of the locking bolt 5 presses against the first contact groove 21 directly below it, driving the sliding fastener to move outward. At this time, the sliding seat 23 moves out of the reserved groove 15, so that the second contact groove 22 is located directly below the second locking bolt 5. Then the second locking bolt 5 is gradually tightened, and the bottom of the locking bolt 5 presses against the second contact groove 22 directly below it, driving the sliding fastener to move outward again until the bottom of the locking bolt 5 is against the top of the tool 10, completing the vertical main locking and fixing of the tool 10 in the horizontal inner groove. Under the sequential force guidance of the inclined surfaces of the first contact groove 21 and the second contact groove 22, the sliding fastening frame slides outward along the vertical receiving groove (T-shaped groove 14, L-shaped groove 16) of the tool holder, overcoming the elastic force of the first return spring 19, and driving the sliding seat 18 and the L-shaped sliding frame 17 to move outward synchronously, so that the upper buckle protrusion 11 on the outside of the sliding seat 18 and the lower buckle protrusion 12 at the bottom of the L-shaped sliding frame 17 extend outward synchronously from the vertical receiving groove.

[0043] Third stage: Vertical auxiliary fasteners are used for fixing.

[0044] The vertical buckle seat 7 is attached to the side of the tool holder, so that the upper buckle protrusion 11 extends into the vertical buckle groove 31 through the pre-installation expansion groove 34. At this time, the vertical buckle seat 7 is located above the lower buckle protrusion 12. Then press the vertical buckle seat 7 down into place, and the upper buckle protrusion 11 moves upward relative to the pre-installation expansion groove 34. The upper buckle protrusion 11 is engaged at the upper part of the vertical buckle groove 31, and the lower buckle protrusion 12 is engaged at the bottom of the vertical buckle groove 31, thus realizing the buckle connection between the vertical buckle seat 7 and the sliding fastening bracket.

[0045] Once the buckle is in place, the inner wall of the vertical buckle seat 7 completely fits the outer wall of the tool 10, forming the first auxiliary wrapping limit from the outside of the tool 10, restricting the radial movement of the tool.

[0046] Phase 4: Gear meshing and linkage for tightening and reinforcement.

[0047] As the vertical buckle seat 7 snaps into place along the outer side wall of the sealing plate 6, the cutter 10 and the square base 1, the abutment protrusion 33 of the vertical sliding drive component presses against the upper end face of the buckle protrusion 12 and is subjected to a reverse thrust. The abutment protrusion 33 moves upward along the connecting limiting groove 32, and the abutment protrusion 33 drives the vertical sliding plate 25 to slide vertically upward along the mounting groove 24, compressing the second reset spring 29 at the top. The teeth 26 on the side of the vertical sliding plate 25 move upward and mesh with the two sets of gears 27 on the left and right, driving the gears 27 and the coaxially fixed rotating shaft 35 to rotate synchronously. Finally, the two sets of rotating auxiliary fastening arms 9 rotate outward and open, so that the ends of the rotating auxiliary fastening arms 9 are tightly against the two sides of the outer wall of the tool 10, forming a double-sided symmetrical clamping structure, and completing the all-round multi-locking of the tool 10.

[0048] Equipment loosening and reset principle: When it is necessary to disassemble and replace the tool 10, lift the vertical buckle seat 7, and the vertical sliding plate 25 loses the squeezing force of the lower buckle protrusion 12. Under the elastic force of the second reset spring 29, it resets downward. Through the teeth 26, the gear 27 reverses, causing the two sets of rotating auxiliary fastening arms 9 to retract inward into the side groove 30, releasing the clamping limit on the tool 10. At this time, the upper buckle protrusion 11 is just moved into the pre-installation expansion groove 34, the lower buckle protrusion 12 moves out from the bottom of the vertical buckle groove 31, and then the vertical buckle seat 7 can be pulled out. Then, rotate the locking bolt 5 in the opposite direction to release its compression and limiting effect on the contact groove structure. Under the elastic reset action of the first reset spring 19, the sliding fastener retracts into the vertical receiving groove. The upper buckle protrusion 11 and the lower buckle protrusion 12 retract simultaneously, releasing the downward pressure and locking of the locking bolt 5 on the tool 10, and the tool 10 can be easily removed.

[0049] 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. A tool post assembly for a CNC lathe comprising a tool post base and vertical secondary fasteners for side clamping of the tool post base, characterised in that: The top side of the tool holder is screwed with a locking bolt (5), the middle side of the tool holder is provided with a horizontal inner groove for installing a tool (10), the middle side of the tool holder is provided with a vertical receiving groove, and a sliding fastening bracket is slidably connected in the vertical receiving groove. The top of the sliding fastening bracket is provided with a contact groove structure corresponding to the bottom of the locking bolt (5); The vertical auxiliary fastener is also provided with a vertical sliding drive and two sets of left and right rotating auxiliary fastening arms (9) that mesh with the vertical sliding drive. After the locking bolt (5) abuts against the through contact groove structure and locks the tool (10), the upper buckle protrusion (11) and lower buckle protrusion (12) on the upper and lower ends of the sliding fastener extend out of the vertical receiving groove simultaneously. Then, the vertical auxiliary fastener is snapped into place with the upper buckle protrusion (11) and lower buckle protrusion (12) downwards, so that the vertical auxiliary fastener is close to the outer wall of the tool (10). At the same time, the vertical sliding drive abuts against the upper end of the lower buckle protrusion (12), so that the vertical sliding drive drives the left and right sets of rotating auxiliary fastening arms (9) to rotate and open, forming a contact abutment against the outer wall of the tool (10).

2. The tool turret assembly of a CNC lathe according to claim 1, characterized in that: The tool holder includes a square base (1), a square boss (2) provided at the middle of the upper end of the square base (1), and a square top seat (3) provided at the upper end of the square boss (2). The vertical receiving groove includes a T-shaped groove (14) on the side of the square base (1) and an L-shaped groove (16) between the square boss (2) and the square top seat (3). The sliding fastener includes a sliding seat (18) that slides into the T-slot (14) and an L-shaped sliding bracket (17) connected to the bottom of the sliding seat (18). The contact groove structure includes a first contact groove (21) and a sliding seat (23) symmetrically arranged on the inner side wall of the sliding seat (18), and a second contact groove (22) is provided on the sliding seat (23). The inner wall of the T-shaped groove (14) is provided with a reserved groove (15) for the insertion of the sliding seat (23).

3. The tool turret assembly for a CNC lathe according to claim 2, characterized in that: The horizontal inner groove is formed by the lower end of the square base (1), the outer wall of the square boss (2), and the upper end of the square top seat (3); The square top seat (3) is provided with an end cap (4) on its top.

4. The tool turret assembly of a CNC lathe according to claim 2, characterized in that: The upper buckle protrusion (11) is located at the middle of the outer end of the sliding seat (18), and the lower buckle protrusion (12) is located at the bottom outer end of the L-shaped sliding frame (17).

5. The tool turret assembly of a CNC lathe according to claim 2, characterized in that: The square base (1) is equipped with a sealing plate (6) for sealing the T-shaped groove (14) on its side. The sealing plate (6) has a through groove (13) in the middle for the upper buckle protrusion (11) to extend out. The outer wall of the sliding seat (18) is symmetrically provided with two sets of first spring holes (20) on the left and right sides. A first reset spring (19) is provided inside the first spring hole (20), and the other end of the first reset spring (19) abuts against the inner wall of the sealing plate (6).

6. The tool turret assembly of a CNC lathe according to claim 1, characterized in that: The vertical auxiliary fastener is a vertical buckle seat (7). The vertical buckle seat (7) has a vertical buckle groove (31) in the center of its inner wall. The vertical buckle groove (31) extends to the bottom of the vertical buckle seat (7). The upper buckle protrusion (11) and the lower buckle protrusion (12) are both buckled in the vertical buckle groove (31). The upper part of the vertical buckle groove (31) is provided with a pre-installation enlargement groove (34) for inserting the upper buckle protrusion (11).

7. The tool turret assembly for a CNC lathe according to claim 6, characterized in that: The lower part of the outer wall of the vertical buckle seat (7) is provided with an installation groove (24), and a connecting limiting groove (32) is provided between the installation groove (24) and the vertical buckle groove (31). The vertical sliding drive includes a vertical sliding plate (25) and an abutting protrusion (33) provided at the bottom of the inner wall of the vertical sliding plate (25). The abutting protrusion (33) extends into the vertical buckling groove (31) via a connecting limiting groove (32).

8. The tool turret assembly for a CNC lathe according to claim 7, characterized in that: A cover (8) is installed on the outside of the mounting slot (24).

9. The tool turret assembly of a CNC lathe according to claim 7, characterized in that: The vertical sliding plate (25) has symmetrical second spring holes (28) on both sides of its top. The second spring hole (28) is equipped with a second reset spring (29), and the top of the second reset spring (29) is connected to the top wall of the mounting groove (24).

10. A tool turret assembly for a CNC lathe according to claim 7, characterized in that: The vertical buckle seat (7) has symmetrical side grooves (30) on both sides of its inner wall for installing the rotating auxiliary fastening arm (9). The bottom of the rotating auxiliary fastening arm (9) is fixed with a rotating shaft (35). The rotating shaft (35) extends through the side groove (30) into the mounting groove (24) and is fixed with a gear (27). The gear (27) meshes with the teeth (26) on the side of the vertical sliding plate (25).

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