A quick tool change component for a CNC lathe turret

Abstract

This utility model discloses a quick-change tool assembly for a CNC lathe turret, relating to the field of CNC lathe technology. Specifically, it includes a tool holder and a pad detachably connected to the CNC lathe turret. One end of the tool holder has a mounting groove adapted to the tool, and a linear motion structure is movably connected to one side of the mounting groove. The pad is detachably connected to the power output end of the linear motion structure. The other end of the tool holder has a power cavity containing a drive assembly. The power input end of the linear motion structure is driven by the drive assembly. This application achieves quick tool fixing and quick tool release by pushing the handle inward and moving the lifting rod upward. The operation process is simple and intuitive, requiring no complex steps, effectively shortening the tool change time and significantly improving tool change efficiency.

Description

Technical Field

[0001] This utility model relates to the field of CNC lathe technology, specifically to a quick tool change component for a CNC lathe turret. Background Technology

[0002] CNC lathes, as core equipment in metal cutting, are widely used in automotive parts, aerospace, and precision mold manufacturing. Their machining efficiency and precision directly affect product manufacturing cycles and costs. In the machining of complex parts, frequent switching between different types of tools is often required to complete multiple processes such as roughing, finishing, drilling, and grooving. The tool turret, as a core functional component of the CNC lathe, plays a crucial role in tool storage, switching, and positioning. The connection method between the tool and the turret, and the efficiency of tool replacement, are among the core bottlenecks affecting the overall machining efficiency of CNC lathes.

[0003] In existing technologies, the typical connection between the cutting tool and the turret is a bolt-and-shield clamping structure. Specifically, a rectangular or circular mounting slot is made on the tool holder of the turret. A shim is pre-tightened and fixed to the bottom of the mounting slot using bolts. During machining, the tool shank (or tool holder) is inserted into the mounting slot, and the shim is moved axially by tightening the bolts. The friction between the shim and the side of the tool shank is used to radially fix the tool. When the tool needs to be replaced after machining, the bolts must be tightened in the opposite direction to release the clamping force of the shim on the tool shank, allowing the old tool to be removed and the new tool installed. This connection method requires operators to tighten the bolts multiple times during tool replacement, reducing tool replacement efficiency.

[0004] Based on this, this application proposes a quick tool change assembly for a CNC lathe turret. Utility Model Content

[0005] This invention provides a quick tool change component for a CNC lathe turret, which solves the problem of low tool change efficiency mentioned in the background art.

[0006] This utility model provides the following technical solution: a quick tool change component for a CNC lathe turret, comprising a tool holder and a pad detachably connected to the CNC lathe turret. One end of the tool holder is provided with a mounting groove adapted to the tool. A linear motion structure is movably connected to one side of the mounting groove. The pad is detachably connected to the power output end of the linear motion structure. The other end of the tool holder is provided with a power cavity, and a drive component is provided inside the power cavity. The power input end of the linear motion structure is driven by the drive component.

[0007] The drive assembly includes a gear connected to the power input end of the linear motion structure, a positioning block connected to the end of the gear away from the linear motion structure, a movable plate movably connected to the power cavity, and a lifting rod movably connected to the top of the power cavity. The horizontal end of the movable plate is connected to a toothed plate that meshes with the gear. One side of the vertical end of the movable plate is connected to the tool holder via a first spring. The other side of the vertical end of the movable plate is connected to a push rod. The end of the push rod away from the movable plate extends to the outside of the power cavity and is fixed with a handle. The lifting rod is located directly above the positioning block. Its bottom end, near the handle, is connected to a positioning rod. The positioning rod is connected to the top of the power cavity via a second spring. A limit rod is provided on the bottom end of the lifting rod near the first spring. The limit rod is movably connected to the power cavity. The horizontal end of the limit rod is located above the positioning block. The vertical end of the limit rod is located on the side of the movable plate near the first spring. The limit rod is connected to the tool holder via a third spring.

[0008] Preferably, the positioning block and the lifting rod are in a state of magnetic attraction.

[0009] Preferably, the distance between the horizontal end of the limiting rod and the positioning block is not less than the rotation diameter of the positioning block.

[0010] Preferably, when the bottom of the lifting rod is at the same height as the top of the horizontal end of the limiting rod, the top of the positioning rod is in contact with the top of the power cavity, and when the bottom of the lifting rod is in contact with the top of the positioning block, one side of the bottom end of the positioning rod is in contact with the end of the moving plate away from the first spring, and the other side of the bottom end of the positioning rod is in contact with the inner wall of the power cavity.

[0011] Preferably, the linear motion structure includes a ball screw pair, a fixed tube, and a fixing bolt. The ball screw pair includes a ball screw movably connected to the tool holder and a ball nut adapted to the ball screw. The power input end of the ball screw is connected to a gear. One end of the fixed tube is connected to the ball nut, and the fixed tube is movably sleeved on the outer ring of the ball screw. The other end of the fixed tube is threadedly connected to the fixing bolt.

[0012] Preferably, the pad is provided with a through groove adapted to the fixing tube, one end of the through groove is provided with a threaded tube, and the fixing bolt is adapted to the threaded tube.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. This CNC lathe tool turret quick-change component can quickly fix and release the tool by pushing the handle inward and moving the lifting rod upward. The operation process is simple and intuitive, without complicated steps, effectively shortening the tool change time and greatly improving tool change efficiency.

[0015] 2. This CNC lathe tool turret quick-change assembly features multiple limit protections. The lifting rod and positioning rod form a limiting structure. The lifting rod axially limits the gears and ball screw to prevent unintended rotation; the positioning rod limits the moving plate to prevent abnormal movement. Furthermore, this limiting structure is synergistically compressed by the rebound forces of the first, second, and third springs, enhancing positional stability, ensuring the shim position is fixed, and thus guaranteeing stable and reliable tool clamping. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a quick-change tool turret assembly for a CNC lathe proposed in this utility model;

[0017] Figure 2 This is a schematic diagram showing the connection between the structure of this utility model and the tool turret of a CNC lathe, and how the tool is fixed.

[0018] Figure 3 This is a schematic cross-sectional view of the tool holder structure of this utility model;

[0019] Figure 4 This is a schematic diagram showing the connection between the structural drive component and the linear motion structure of this utility model;

[0020] Figure 5 This is a schematic cross-sectional view of the structural pad block of this utility model.

[0021] In the diagram: 1. Tool holder; 2. Ball nut; 3. Ball screw; 4. Mounting groove; 5. Pad block; 6. Lifting rod; 7. Handle; 8. Fixing bolt; 9. Push rod; 10. Gear; 11. Moving plate; 12. Second spring; 13. Positioning block; 14. Positioning rod; 15. Limiting rod; 16. Third spring; 17. First spring; 18. Threaded tube; 19. Fixing tube; 20. Through groove. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] This utility model provides an embodiment: Please refer to Figures 1-5A quick-change tool assembly for a CNC lathe turret includes a tool holder 1 and a pad 5 detachably connected to the CNC lathe turret. One end of the tool holder 1 is provided with a mounting groove 4 adapted to the tool. A linear motion structure is movably connected to one side of the mounting groove 4. The pad 5 is detachably connected to the power output end of the linear motion structure. The pad 5 is a wedge-shaped block. The side of the pad 5 that contacts the tool holder 1 is an inclined surface, and the side of the pad 5 that contacts the tool is a flat surface. Through the setting of the linear motion structure, the position of the pad 5 can be changed when the linear motion structure is working, so that the pad 5 moves along the direction of its inclined surface. After the tool is placed into the mounting groove 4, the linear motion structure drives the pad 5 to move. The pad 5 applies a squeezing force to the tool, thereby achieving stable clamping and fixing of the tool.

[0024] In Example 1, the linear movement structure includes a ball screw pair, a fixed tube 19, and a fixing bolt 8. The ball screw pair includes a ball screw 3 movably connected to the tool holder 1 and a ball nut 2 adapted to the ball screw 3. One end of the fixed tube 19 is connected to the ball nut 2, and the fixed tube 19 is movably sleeved on the outer ring of the ball screw 3. The other end of the fixed tube 19 is threadedly connected to the fixing bolt 8. The pad 5 is provided with a through groove 20 adapted to the fixed tube 19. The ball nut 2 is movably connected to the through groove 20. One end of the through groove 20 is provided with a threaded tube 18. The fixing bolt 8 is adapted to the threaded tube 18. When the fixing bolt 8 is threadedly connected to both the threaded tube 18 and the fixed tube 19, the fixed tube 19 is connected to the pad 5. When the ball screw 3 rotates, the ball nut adapted to it can move in the direction of the ball screw 3. When the ball nut moves, it can drive the pad 5 to move through the fixed tube 19. That is, the position of the pad 5 can be changed by using the linear movement structure.

[0025] The other end of the tool holder 1 is provided with a power cavity, and a drive assembly is provided inside the power cavity. The power input end of the linear movement structure is driven by the drive assembly. The drive assembly includes a gear 10 connected to the power input end of the ball screw 3, a gear 10 connected to the gear 10, a positioning block 13 connected to the end of the gear 10 away from the linear movement structure, a moving plate 11 movably connected to the power cavity, and a lifting rod 6 movably connected to the top of the power cavity. The horizontal end of the moving plate 11 is connected to a toothed plate that meshes with the gear 10. One side of the vertical end of the moving plate 11 is connected to the tool holder 1 through a first spring 17. The other side of the vertical end of the moving plate 11 is connected to a push rod 9. The end of the push rod 9 away from the moving plate 11 extends to the outside of the power cavity and is fixed with a handle 7. In use, the operator can move the push rod 9 through the handle 7. The push rod 9 can move the moving plate 11 connected to it in the power cavity. When the moving plate 11 moves, it drives the toothed plate to move. The toothed plate can drive the ball screw 3 to rotate through the gear 10 that meshes with it, thereby driving the ball screw 3.

[0026] The lifting rod 6 is located directly above the positioning block 13. Its bottom end is connected to the positioning rod 14 near the handle 7. The positioning rod 14 is connected to the top of the power chamber through the second spring 12. A limit rod 15 is provided on the bottom end of the lifting rod 6 near the first spring 17. The limit rod 15 is movably connected to the power chamber. The horizontal end of the limit rod 15 is located above the positioning block 13. The vertical end of the limit rod 15 is located on the side of the moving plate 11 near the first spring 17. When the moving plate 11 moves, the moving plate 11 can contact the bottom end of the vertical end of the limit rod 15 and drive the limit rod 15 away from the lifting rod 6 until the limit rod 15 is separated from the lifting rod 6. The limit rod 15 is connected to the tool holder 1 through the third spring 16. The distance between the horizontal end of the limiting rod 15 and the positioning block 13 is not less than the rotation diameter of the positioning block 13. This setting can prevent the horizontal end of the limiting rod 15 from restricting the positioning block 13 when it rotates with the gear 10. The distance between the horizontal end of the limiting rod 15 and the positioning block 13 can be set according to requirements and is not limited here.

[0027] When this application is in use, when the pad block 5 releases the clamping and fixing of the tool, the bottom of the lifting rod 6 is at the same height as the top of the horizontal end of the limiting rod 15, and the top of the positioning rod 14 is in contact with the top of the power chamber. At this time, the horizontal end of the limiting rod 15 can simultaneously limit the horizontal ends of the lifting rod 6 and the positioning rod 14, thereby locking the position of the lifting rod 6. At this time, the operator can move the moving plate 11 by using the handle 7 and the push rod 9.

[0028] When the tool is clamped and fixed using the pad 5, the bottom of the lifting rod 6 contacts the top of the positioning block 13, thereby limiting the positioning block 13. This, in turn, allows the lifting rod 6 to limit the ball screw 3 via the positioning block 13 and the gear 10 connected to the positioning block 13, preventing the ball screw 3 from rotating unexpectedly and thus improving the reliability of the pad 5's position. At the same time, one side of the bottom end of the positioning rod 14 contacts the end of the moving plate 11 away from the first spring 17, and the other side of the bottom end of the positioning rod 14 contacts the inner wall of the power cavity, thus limiting the moving plate 11. In this state, the limiting structure composed of the lifting rod 6 and the positioning rod 14 is simultaneously subjected to the synergistic compression of the rebound forces of the first spring 17, the second spring 12, and the third spring 16. Moreover, the limiting structure is subjected to compression forces in multiple directions, ensuring positional stability and thus maintaining the stable position of the pad 5, thereby improving the reliability of the tool clamping and fixing. Furthermore, the positioning block 13 and the lifting rod 6 are in a magnetically attracted state. The materials of both can be set according to requirements and are not limited here. The magnetic attraction between the positioning block 13 and the lifting rod 6 can further improve the positional stability of the limiting structure, thereby further improving the reliability of tool clamping and fixing.

[0029] As described above, when this application is in use, the operator moves the lifting rod 6 upwards, and when it contacts the limiting structure restricting the moving plate 11 and the positioning block 13, the moving plate 11 can be reset under the action of the rebound force of the first spring 17. During the reset process, the moving plate 11 drives the gear 10 to rotate through the gear plate, and the gear 10 drives the ball screw 3 connected to it to rotate. The rotation of the ball screw 3 allows the pad 5 to contact and fix the tool. That is, when the operator moves the lifting rod 6 upwards, the tool can contact and be fixed. When the operator pushes the handle 7 close to the positioning block 13, the handle 7 can drive the moving plate 11 to move through the push rod 9. The moving plate 11 drives the gear 10 to rotate in the opposite direction through the gear plate, and the gear 10 drives the ball screw 3 connected to it to rotate. The rotation of the ball screw 3 causes the pad 5 to move, and the pad 5 can gradually approach the tool until the tool is clamped and fixed. That is, the operator can fix the position of the tool by pushing the handle 7. The tool is easy to install and remove, so that the CNC lathe turret tool can be quickly fixed when this application is in use.

[0030] In addition, buffer sheets are provided on the outer surface of the drive component and the inner wall of the power cavity. The material of the buffer sheets can be set according to the requirements and is not limited here. The buffer sheets are used to reduce the impact force generated during the use of this application, reduce the impact damage to the key components of the device, and improve the overall stability and durability of the structure.

[0031] In summary: When using this CNC lathe turret tool quick-change assembly, the operator connects the tool holder 1 to the CNC lathe turret using conventional components such as bolts. After placing the tool into the mounting slot to the appropriate length, the operator presses the handle 7. The handle 7 moves the moving plate 11 via the push rod 9. The moving plate 11 drives the gear 10 to rotate via the gear plate. The gear 10 drives the connected ball screw 3 to rotate. When the ball screw 3 rotates, the matching ball nut can move in the direction of the ball screw 3. When the ball nut moves, it can drive the pad 5 to move via the fixing tube 19. The pad 5 can gradually move closer to the tool. This application uses the pad 5 to clamp the tool. When held in place, the movable plate 11 is tightly fitted to the inner wall of the power chamber, and the movable plate 11 cannot move further. Under the pushing action of the movable plate 11, the limiting rod 15 separates from the lifting rod 6, releasing the restriction on the lifting rod 6. Under the action of the rebound force of the second spring 12, the second spring 12 drives the positioning rod 14 to move, and the positioning rod 14 drives the lifting rod 6 to move until the bottom end of the positioning rod 14 restricts the movable plate 11. The lifting rod 6 is tightly fitted to the positioning block 13, thus restricting the positioning block 13. In turn, the positioning block 13 restricts the gear 10 and the ball screw 3, preventing the ball screw 3 from rotating unexpectedly, thereby improving the reliability of the fixed position of the pad 5.

[0032] When a tool needs to be replaced, the operator moves the lifting rod 6 upwards until it can no longer move, releasing the restriction of the positioning rod 14 on the moving plate 11 and the restriction of the lifting rod 6 on the positioning block 13. Under the action of the first spring 17's return force, the moving plate 11 can be reset. The moving plate 11 can drive the gear 10 to rotate in the opposite direction through the gear plate, and the gear 10 drives the ball screw 3 to rotate in the opposite direction until the pad 5 is reset. This application releases the clamping and fixing of the tool, and the old tool can be removed. When the lifting rod 6 can no longer move upwards, the bottom of the lifting rod 6 is at the same height as the top of the horizontal end of the limiting rod 15. Under the action of the third spring 16's return force, the horizontal end of the limiting rod 15 can move to below the lifting rod 6, realizing the limitation of the lifting rod 6. This allows the lifting rod 6 to remain in the same position when the operator releases the restriction, facilitating the installation of the tool.

[0033] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each structure adopt conventional technical means such as bolt connection in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology. The materials and specifications of each component can be selected according to the requirements and are not limited here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art. Although the embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A quick-change tool assembly for a CNC lathe turret, comprising a tool holder (1) and a pad (5) detachably connected to the CNC lathe turret, characterized in that: One end of the tool holder (1) is provided with a mounting groove (4) adapted to the tool. A linear moving structure is movably connected to one side of the mounting groove (4). The pad (5) is detachably connected to the power output end of the linear moving structure. The other end of the tool holder (1) is provided with a power cavity. A drive component is provided in the power cavity. The power input end of the linear moving structure is driven by the drive component. The drive assembly includes a gear (10) connected to the power input end of the linear motion structure, a positioning block (13) connected to one end of the gear (10), a moving plate (11) movably connected to the power cavity, and a lifting rod (6) movably connected to the top of the power cavity. The horizontal end of the moving plate (11) is connected to a toothed plate that meshes with the gear (10). One side of the vertical end of the moving plate (11) is connected to the tool holder (1) via a first spring (17). The other side of the vertical end of the moving plate (11) is connected to a push rod (9). The end of the push rod (9) away from the moving plate (11) extends to the outside of the power cavity and is fixed with a handle (7). The lifting rod (6) is located directly above the positioning block (13), and a positioning rod (14) is connected to the bottom end of the lifting rod (6) near the handle (7). The positioning rod (14) is connected to the top of the power chamber through the second spring (12). A limit rod (15) is provided on the bottom end of the lifting rod (6) near the first spring (17). The limit rod (15) is movably connected to the power chamber. The horizontal end of the limit rod (15) is located above the positioning block (13), and the vertical end of the limit rod (15) is located on the side of the moving plate (11) near the first spring (17). The limit rod (15) is connected to the tool holder (1) through the third spring (16).

2. The quick-change tool assembly for a CNC lathe turret according to claim 1, characterized in that: The positioning block (13) and the lifting rod (6) are in a state of magnetic attraction.

3. The quick-change tool assembly for a CNC lathe turret according to claim 1, characterized in that: The distance between the horizontal end of the limiting rod (15) and the positioning block (13) is not less than the rotation diameter of the positioning block (13).

4. The quick-change tool assembly for a CNC lathe turret according to claim 1, characterized in that: When the bottom of the lifting rod (6) is at the same height as the top of the horizontal end of the limiting rod (15), the top of the positioning rod (14) is in contact with the top of the power cavity. When the bottom of the lifting rod (6) is in contact with the top of the positioning block (13), one side of the bottom end of the positioning rod (14) is in contact with the end of the moving plate (11) away from the first spring (17), and the other side of the bottom end of the positioning rod (14) is in contact with the inner wall of the power cavity.

5. A quick-change tool assembly for a CNC lathe turret according to claim 1, characterized in that: The linear motion structure includes a ball screw pair, a fixed tube (19), and a fixed bolt (8). The ball screw pair includes a ball screw (3) movably connected to the tool holder (1) and a ball nut (2) adapted to the ball screw (3). The power input end of the ball screw (3) is connected to the gear (10). One end of the fixed tube (19) is connected to the ball nut (2), and the fixed tube (19) is movably sleeved on the outer ring of the ball screw (3). The other end of the fixed tube (19) is threadedly connected to the fixed bolt (8).

6. A quick-change tool assembly for a CNC lathe turret according to claim 5, characterized in that: The pad (5) is provided with a through groove (20) adapted to the fixing tube (19), and a threaded tube (18) is provided at one end of the through groove (20). The fixing bolt (8) is adapted to the threaded tube (18).

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