High-precision clamping tool of numerically controlled lathe

Abstract

The utility model relates to the technical field of numerically controlled lathes, and discloses a numerically controlled lathe high-precision clamping tool which comprises a shell, a cylinder is fixedly connected to the left side of the outer wall of the shell, a rotating rod is rotationally connected to the inner wall of the cylinder, first rotating teeth are fixedly connected to the rear end of the rotating rod, and a rotating valve is fixedly connected to the other end of the rotating rod. A gear is rotatably connected to the bottom of the inner wall of the shell, a threaded block is fixedly connected to the top of a second rotating tooth, a first connecting column is fixedly connected to the middle of the threaded block, a top plate is fixedly connected to the top of the first connecting column, and a plurality of clamping blocks are slidably connected to the outer wall of the top plate; the bottoms of the multiple clamping blocks are rotationally connected with the threaded block. According to the utility model, the shell is used as a main body structure, the cylinder is rotationally connected with the rotating rod, and the rotating valve is arranged, so that an operator accurately controls the rotating angle of the rotating valve to realize fine adjustment of the clamping degree of the clamping block.

Description

Technical Field

[0001] The utility model relates to the technical field of numerically controlled lathes, in particular to a high-precision clamping tool for numerically controlled lathes. Background Art

[0002] In modern manufacturing, the shapes and sizes of workpieces are becoming increasingly diverse, from simple round and square parts to complex special-shaped structures, from tiny precision components to large mechanical components. Workpieces of different shapes and sizes require clamping fixtures that can be flexibly adapted to ensure stable fixation during the processing process. A high-precision clamping fixture for CNC lathes is needed.

[0003] After searching, the Chinese patent announcement number is: CN219562281U, which discloses a high-precision processing device for a CNC lathe, including a CNC bed body, a fixed plate slidingly connected inside the CNC bed body, and a main gear rotatably connected inside the fixed plate. A fixed frame is fixedly installed on the top of the main gear, and two fixed rods are slidably connected to the inner side wall of the fixed frame. Two sliding rods are fixedly installed on one side of the bottom of the two fixed rods, wherein the outer sides of the two sliding rods are fixedly installed with racks, and the racks are meshed with connecting gears, and a sub-gear is fixedly installed on the bottom of the connecting gear. The beneficial effect of this utility model is that the fixed plate is set to slide inside and outside the CNC bed body, which can make it easier to fix the processed workpiece, and then the steering gear is set to act on the main gear, so that when the fixed frame rotates the workpiece at an angle, the steering gear can be rotated to enable the main gear to rotate slowly, thereby improving the accuracy of the angular rotation of the workpiece by the fixed frame. However, the existing high-precision clamping tooling for CNC lathes is made of cast iron and steel alloys. Workpieces of different shapes and sizes require different clamping methods, but the existing clamping tooling is only suitable for specific types, making it difficult to achieve effective clamping. Additional customization or replacement of the clamping tooling is required, increasing costs and time. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a high-precision clamping tool for CNC lathes, which aims to improve the existing technology. However, the existing clamping tool is only suitable for specific types, and it is difficult to achieve effective clamping. Additional customization or replacement of the clamping tool is required, which increases cost and time cost.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a high-precision clamping tool for a CNC lathe, comprising an outer shell, a cylinder fixedly connected to the left side of the outer wall of the outer shell, a rotating rod rotatably connected to the inner wall of the cylinder, a rear end of the rotating rod fixedly connected to a rotating tooth 1, the other end of the rotating rod fixedly connected to a rotating valve, the bottom of the inner wall of the outer shell rotatably connected to a gear, the top of the rotating tooth 2 is fixedly connected to a threaded block, the middle of the threaded block is fixedly connected to a connecting column 1, the top of the connecting column 1 is fixedly connected to a top plate, the outer wall of the top plate is slidably connected to a plurality of clamping blocks, the bottoms of the plurality of clamping blocks are all rotatably connected to the threaded block, and a fixing mechanism is provided on the top of the top plate.

[0006] Through the above technical solution: the outer shell is used as the main structure of the entire clamping tool, and a cylinder is fixedly connected to the left side of its outer wall. The cylinder and the rotating rod are rotatably connected, so that the rotating rod can rotate freely in the cylinder. In order to realize the adjustment function of the clamping tool, the rear end of the rotating rod is fixedly connected with a rotating tooth, and the other end of the rotating rod is fixedly connected with a rotating valve. By rotating the rotating valve, the rotating rod and the rotating tooth can be driven to rotate. When the rotating tooth rotates, it drives the gear connected to the bottom of the inner wall of the outer shell to rotate, so that the gear can rotate freely at the bottom of the outer shell. The threaded block is fixedly connected to the top of the gear, and the connecting column 1 is fixedly connected to the middle of the threaded block, which is used to support the top plate. The outer wall of the top plate is slidably connected with multiple clamping blocks, and the bottom of the clamping block is rotatably connected to the threaded block. When the threaded block rotates under the drive of the rotating gear 2, it drives the clamping block to perform corresponding opening and closing movements, thereby realizing the clamping or loosening function.

[0007] As a further description of the above technical solution:

[0008] The fixing mechanism includes two fixing blocks, the bottoms of the two fixing blocks are fixedly connected to the top of the top plate, the adjacent sides of the two fixing blocks are fixedly connected to a rotating column, the outer wall of the rotating column is rotatably connected to the connecting column 2, the left side of the outer wall of the connecting column 2 is fixedly connected to a fixing bracket, and the left and right sides of the top of the top plate are provided with a connecting groove 3, and the left and right sides of the outer walls of the two fixing brackets are engaged with the three connecting grooves.

[0009] Through the above technical solution: two fixed blocks are used as the basic support part of the entire fixing mechanism to ensure the stability of the fixed blocks, the connecting column two is connected to the rotating column through rotation, so that the rotating column can rotate, the fixing frame fixedly connected to the left side of the outer wall of the connecting column two is used to fix the gear after clamping, and the connecting grooves three are opened on the left and right sides of the top of the top plate. The left and right sides of the outer walls of the two fixing frames are engaged with the connecting grooves three, so that the entire fixing mechanism will not be easily displaced during operation.

[0010] As a further description of the above technical solution:

[0011] A groove 1 is provided in the middle of the top end of the top plate, and a connecting block is fixedly connected to the inner wall of the groove 1.

[0012] Through the above technical solution: a specific spatial structure is added to the clamping tooling by opening a groove 1 in the middle of the top of the top plate, and the connecting block is fixedly connected to the inner wall of the groove 1. When the clamping tooling is subjected to external forces during operation, such as the reaction force generated when clamping the workpiece, the connecting block can help disperse these forces and reduce the risk of deformation of the top plate near the groove 1 area, thereby ensuring the stability and precision of the entire clamping tooling.

[0013] As a further description of the above technical solution:

[0014] A plurality of grooves 2 are provided around the top of the connection block, and the inner walls of the plurality of grooves 2 are fixedly connected with support columns.

[0015] Through the above technical solution: multiple grooves 2 opened around the top of the connecting block provide a specific accommodation space for placing gears. When the gear is placed in groove 2, the support column should have an appropriate contact point with the bottom or side of the gear to ensure that the gear will not shake or move at will when it is stationary, so that the position of the gear in the clamping tool can be accurately fixed, further improving the accuracy and reliability of the clamping.

[0016] As a further description of the above technical solution:

[0017] A connecting groove 1 is formed on the outer wall of the shell, and a connecting ring is fixedly connected to the inner wall of the connecting groove 1.

[0018] Through the above technical solution: a connecting groove 1 opened through the outer wall of the shell provides a connection area for the clamping tooling, and the connecting ring is fixedly connected to the inner wall of the connecting groove 1. The connecting ring has a material with good strength and wear resistance. Since the connecting ring is fixed in the connecting groove 1, compared with directly connecting on the surface of the shell, this structure increases the stability of the connection. The inner wall of the connecting groove 1 provides support for the connecting ring in multiple directions, reducing the possibility of displacement or deformation of the connecting ring when subjected to force.

[0019] As a further description of the above technical solution:

[0020] A second connecting groove is provided on the top of the gear, and the second connecting groove is fixedly connected to the threaded block.

[0021] Through the above technical solution: the shape and size of the connecting groove 2 should match the threaded block to ensure that the two can be tightly combined. The fixed connection between the connecting groove 2 and the threaded block enables the gear to better withstand the reaction force from the clamping block and the workpiece, reducing vibration and deformation during operation, thereby improving the reliability and service life of the clamping tooling.

[0022] As a further description of the above technical solution:

[0023] A mounting groove is provided in the middle of the bottom end of the shell, and a plurality of mounting holes are provided around the bottom of the shell.

[0024] Through the above technical solution: the accurate installation and positioning of the clamping tooling is achieved through the joint action of the mounting groove and the mounting hole. The mounting groove serves as a preliminary positioning structure, and cooperates with the corresponding positioning protrusion or matching mounting component to determine the position of the tooling on the horizontal plane. The mounting hole further fixes the position of the tooling by cooperating with bolts and other connecting parts to prevent it from displacement during the working process, thereby ensuring the dimensional accuracy and surface quality of the processed workpiece.

[0025] As a further description of the above technical solution:

[0026] The outer walls of the plurality of clamping blocks are each provided with a square groove, and the inner walls of the plurality of square grooves are each fixedly connected with an anti-slip pattern.

[0027] Through the above technical solution: the anti-slip grooves in the square groove can significantly increase the friction between the clamping block and the workpiece, so that the contact between the clamping block and the workpiece is no longer a simple smooth surface contact, but forms a contact mode with a microscopic bite effect, thereby enhancing the stability of the clamping.

[0028] The utility model has the following beneficial effects:

[0029] 1. In the utility model, the outer shell serves as the main structure, the rotational connection between the cylinder and the rotating rod, and the setting of the rotary valve provide a convenient adjustment function for the clamping tool. The operator can fine-tune the clamping degree of the clamping block by precisely controlling the rotation angle of the rotary valve, so that the clamping tool can adapt to workpieces of different sizes and shapes, ensuring that the workpiece always maintains a stable position during the processing, thereby improving the processing accuracy.

[0030] 2. In the present invention, two fixing blocks are used as basic support parts to provide a solid foundation for the entire fixing mechanism. The fixing frame on the left side of the outer wall of the second connecting column is used to fix the gear after clamping, which can further enhance the clamping force of the gear, so that the gear is constrained in all directions, greatly improving the reliability of clamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a three-dimensional diagram of a high-precision clamping fixture for a CNC lathe proposed in the utility model;

[0032] Figure 2 This is a front view of a high-precision clamping fixture for a CNC lathe proposed by the utility model;

[0033] Figure 3 This is a disassembled diagram of the fixing mechanism of a high-precision clamping tool for a CNC lathe proposed in the utility model;

[0034] Figure 4 This is a partial structural diagram of a high-precision clamping fixture for a CNC lathe proposed by the utility model;

[0035] Figure 5 The utility model is a top view of a high-precision clamping tool for a CNC lathe.

[0036] Legend:

[0037] 1. Housing; 2. Fixing mechanism; 201. Fixing block; 202. Rotating column; 203. Connecting column 2; 204. Fixing frame; 205. Connecting groove 3; 3. Cylinder; 4. Rotating tooth 1; 5. Rotating tooth 2; 6. Threaded block; 7. Connecting column 1; 8. Clamping block; 9. Top plate; 10. Groove 1; 11. Connecting block; 12. Groove 2; 13. Support column; 14. Connecting groove 1; 15. Connecting ring; 16. Connecting groove 2; 17. Mounting groove; 18. Mounting hole; 19. Anti-slip groove; 20. Rotating rod; 21. Rotating valve; 22. Square groove. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0039] Reference Figure 1 、 Figure 3 and Figure 5 The utility model provides an embodiment of a high-precision clamping tool for a CNC lathe, comprising a shell 1, a cylinder 3 is fixedly connected to the left side of the outer wall of the shell 1, the inner wall of the cylinder 3 is rotatably connected to a rotating rod 20, the rear end of the rotating rod 20 is fixedly connected to a rotating tooth 1 4, the other end of the rotating rod 20 is fixedly connected to a rotating valve 21, the bottom of the inner wall of the shell 1 is rotatably connected to a rotating tooth 2 5, the top of the rotating tooth 2 5 is fixedly connected to a threaded block 6, the middle of the threaded block 6 is fixedly connected to a connecting column 1 7, the top of the connecting column 1 7 is fixedly connected to a top plate 9, the outer wall of the top plate 9 is slidably connected to a plurality of clamping blocks 8, the bottoms of the plurality of clamping blocks 8 are all rotatably connected to the threaded block 6, and a fixing mechanism 2 is provided on the top of the top plate 9;

[0040] Specifically, the operator turns the rotary valve 21 to make the rotary rod 20 start to rotate. The rotary rod 20 serves as the starting component for power input, and transmits the force and movement of the manual operation to the rotary gear 4. Since the rotary gear 4 at the rear end of the rotary rod 20 is engaged with the rotary gear 2 5 rotatably connected to the bottom of the inner wall of the shell 1, when the rotary rod 20 rotates, the rotary gear 1 4 drives the rotary gear 2 5 to rotate synchronously. The top of the rotary gear 2 5 is fixedly connected to the threaded block 6. When the rotating gear 2 5 rotates, the threaded block 6 will move accordingly. The connecting column 1 7 in the middle of the threaded block 6 is connected to the top plate 9. The outer wall of the top plate 9 is slidably connected with multiple clamping blocks 8, and the bottom of the clamping block 8 is rotatably connected to the threaded block 6. When the threaded block 6 moves upward, due to the sliding connection between the clamping block 8 and the top plate 9 and the rotational connection relationship with the threaded block 6, the clamping block 8 will slide toward the center on the top plate 9 to achieve the clamping action of the workpiece. When the threaded block 6 rotates in the opposite direction, the clamping block 8 will slide away from the center to release the workpiece.

[0041] Reference Figure 1 、 Figure 2 and Figure 3 The fixing mechanism 2 includes two fixing blocks 201. The bottoms of the two fixing blocks 201 are fixedly connected to the top of the top plate 9. The adjacent sides of the two fixing blocks 201 are fixedly connected with a rotating column 202. The outer wall of the rotating column 202 is rotatably connected to the second connecting column 203. The left side of the outer wall of the second connecting column 203 is fixedly connected to a fixing frame 204. The left and right sides of the top of the top plate 9 are respectively provided with a third connecting groove 205. The left and right sides of the outer walls of the two fixing frames 204 are both engaged with the third connecting groove 205.

[0042] Specifically, when the gear needs to be fixed, the connecting column 203 is used to rotate around the rotating column 202. The rotating column 202 is connected between the two fixing blocks 201. The two fixing blocks 201 are firmly fixed to the top of the top plate 9, providing stable support for the rotating column 202. During the rotation process, the connecting column 203 drives the fixing frame 204 to move together. As the connecting column 203 rotates, the fixing frame 204 gradually disengages from the connecting groove 3 205. When the fixing frame 204 is adjusted to a suitable position, it is moved back toward the connecting groove 3 205 so that the left and right sides of the outer wall of the fixing frame 204 engage with the connecting groove 3 205, thereby realizing flexible and stable fixing and disassembly functions.

[0043] Reference Figure 1 、 Figure 2 and Figure 5 A groove 10 is provided in the middle of the top of the top plate 9, and a connecting block 11 is fixedly connected to the inner wall of the groove 10; a plurality of grooves 12 are provided around the top of the connecting block 11, and the inner walls of the plurality of grooves 12 are fixedly connected to support columns 13; a connecting groove 14 is provided on the outer wall of the shell 1, and a connecting ring 15 is fixedly connected to the inner wall of the connecting groove 14;

[0044] Specifically, the top plate 9 is an important component of the clamping tooling, and the groove 10 opened in the middle of its top mainly serves to accommodate and position the connecting block 11. The shape and size of the groove 10 are carefully designed to ensure that the connecting block 11 can be stably installed therein. The groove 10 provides a certain protection for the connecting block 11 and reduces the impact of external factors on the connecting block 11 to ensure that the support columns 13 can be evenly distributed on the connecting block 11 to provide stable support for the workpiece. The depth and shape of the groove 12 must match the support columns 13 to ensure that the support columns 13 can be firmly installed therein and will not loosen or move during operation. The connecting groove 14 opened on the outer wall of the shell 1 provides an installation position for the connecting ring 15. The shape and size of the connecting groove 14 must match the connecting ring 15 to ensure that the connecting ring 15 can be firmly installed therein and will not loosen or move during operation.

[0045] Reference Figure 2 、 Figure 3 and Figure 4 , a second connecting groove 16 is opened on the top of the rotating tooth 5, and the second connecting groove 16 is fixedly connected to the threaded block 6; a mounting groove 17 is opened in the middle of the bottom end of the shell 1, and a plurality of mounting holes 18 are opened around the bottom of the shell 1; the outer walls of the plurality of clamping blocks 8 are each provided with a square groove 22, and the inner walls of the plurality of square grooves 22 are each fixedly connected with an anti-slip pattern 19;

[0046] Specifically, when external power acts on the transmission component engaged with rotating tooth 2 5, rotating tooth 2 5 begins to rotate. Since connecting groove 2 16 at the top of rotating tooth 2 5 is fixedly connected to threaded block 6, mounting groove 17 in the middle of the bottom end of housing 1 is used to cooperate with the specific positioning structure of the mounting platform or machine tool. Multiple mounting holes 18 around the bottom of housing 1 are used to further fix the clamping tool to avoid installation instability or deformation caused by excessive local force. The coordinated design of mounting groove 17 and mounting holes 18 can effectively resist these external forces. When clamping block 8 is driven by threaded block 6 to clamp the workpiece, anti-slip groove 19 in square groove 22 on the outer wall of clamping block 8 contacts the surface of the workpiece. The anti-slip groove 19 has an irregular surface shape, which can increase friction between the clamping block 8 and the workpiece.

[0047] Working principle: The operator rotates the rotary valve 21, and the rotation of the rotary valve 21 drives the rotary rod 20 fixedly connected thereto to start rotating. The rotary connection of the rotary rod 20 in the cylinder 3 ensures the flexibility and stability of the rotation. The rotary tooth 1 4 at the rear end of the rotary rod 20 meshes with the rotary tooth 2 5 at the bottom of the inner wall of the shell 1. When the rotary rod 20 rotates, the rotary tooth 1 4 transmits power to the rotary tooth 2 5, so that the rotary tooth 2 5 rotates synchronously. The top of the rotary tooth 2 5 is fixedly connected to the threaded block 6. When the rotary tooth 2 5 rotates, due to the fixed connection between the threaded block 6 and the rotary tooth 2 5, the rotary tooth 2 The threaded block 6 will then move accordingly. The connecting column 1 7 in the middle of the threaded block 6 is connected to the top plate 9. The outer wall of the top plate 9 is slidably connected to a plurality of clamping blocks 8, and the bottom of the clamping block 8 is rotatably connected to the threaded block 6. The clamping block 8 will slide on the top plate 9. When it is necessary to loosen the workpiece, the operator rotates the rotary valve 21 in the opposite direction, causing the rotating rod 20 to rotate in the opposite direction, thereby driving the rotating tooth 1 4 and the rotating tooth 2 5 to rotate in the opposite direction. The threaded block 6 will then rotate in the opposite direction, causing the position of the connection point between the bottom of the clamping block 8 and the threaded block 6 to change. The clamping block 8 will slide away from the center on the top plate 9 to loosen the workpiece.

[0048] In addition, the two fixing blocks 201 are used as the basic support part of the entire fixing mechanism 2 to ensure the stability of the fixing block 201. The connecting column 203 is connected to the rotating column 202 through rotation, so that the rotating column 202 can rotate. The fixing frame 204 fixedly connected to the left side of the outer wall of the connecting column 203 is used to fix the gear after clamping. The connecting grooves 3 205 are opened on the left and right sides of the top of the top plate 9. The left and right sides of the outer walls of the two fixing frames 204 are engaged with the connecting grooves 3 205, so that the entire fixing frame 204 will not be easily displaced during operation.

[0049] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-precision clamping fixture for a CNC lathe, comprising a housing (1), characterized in that: The left side of the outer wall of the shell (1) is fixedly connected to a cylinder (3), the inner wall of the cylinder (3) is rotatably connected to a rotating rod (20), the rear end of the rotating rod (20) is fixedly connected to a rotating tooth 1 (4), the other end of the rotating rod (20) is fixedly connected to a rotating valve (21), the bottom of the inner wall of the shell (1) is rotatably connected to a rotating tooth 2 (5), the top of the rotating tooth 2 (5) is fixedly connected to a threaded block (6), the middle of the threaded block (6) is fixedly connected to a connecting column 1 (7), the top of the connecting column 1 (7) is fixedly connected to a top plate (9), the outer wall of the top plate (9) is slidably connected to a plurality of clamping blocks (8), the bottoms of the plurality of clamping blocks (8) are all rotatably connected to the threaded block (6), and the top of the top plate (9) is provided with a fixing mechanism (2).

2. The high-precision clamping fixture for a CNC lathe according to claim 1, characterized in that: The fixing mechanism (2) comprises two fixing blocks (201), the bottoms of the two fixing blocks (201) are fixedly connected to the top of the top plate (9), the adjacent sides of the two fixing blocks (201) are fixedly connected to a rotating column (202), the outer wall of the rotating column (202) is rotatably connected to a second connecting column (203), the left side of the outer wall of the second connecting column (203) is fixedly connected to a fixing frame (204), the left side of the outer wall of the top plate (9) is provided with a third connecting groove (205), and the left and right sides of the outer walls of the two fixing frames (204) are engaged with the third connecting groove (205).

3. The high-precision clamping fixture for a CNC lathe according to claim 1, characterized in that: A groove 1 (10) is provided in the middle of the top end of the top plate (9), and a connecting block (11) is fixedly connected to the inner wall of the groove 1 (10).

4. The high-precision clamping fixture for a CNC lathe according to claim 3, characterized in that: A plurality of grooves 2 (12) are provided around the top of the connection block (11), and the inner walls of the plurality of grooves 2 (12) are fixedly connected to support columns (13).

5. The high-precision clamping fixture for a CNC lathe according to claim 1, characterized in that: The outer wall of the housing (1) is provided with a connecting groove (14), and the inner wall of the connecting groove (14) is fixedly connected with a connecting ring (15).

6. The high-precision clamping fixture for a CNC lathe according to claim 1, characterized in that: A second connecting groove (16) is provided on the top of the second rotating tooth (5), and the second connecting groove (16) is fixedly connected to the threaded block (6).

7. The high-precision clamping fixture for a CNC lathe according to claim 1, characterized in that: A mounting groove (17) is provided in the middle of the bottom end of the housing (1), and a plurality of mounting holes (18) are provided around the bottom of the housing (1).

8. The high-precision clamping fixture for a CNC lathe according to claim 1, characterized in that: The outer walls of the plurality of clamping blocks (8) are each provided with a square groove (22), and the inner walls of the plurality of square grooves (22) are each fixedly connected with an anti-slip pattern (19).

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