A chuck with extended jaws

Abstract

This utility model discloses an extended jaw chuck, relating to the field of clamping technology. It includes a manual chuck with a first guide rod fixedly connected inside and a forward and reverse lead screw rotatably connected inside. Two first threaded sleeves are threadedly connected to the forward and reverse lead screws. A first movable block is fixedly connected to the top of each first threaded sleeve. A linkage rod is rotatably connected to the first movable block, and a second movable block is rotatably connected to the end of the linkage rod away from the first movable block. An adjusting sleeve is fixedly connected to the top of the second movable block. The device rotates the first turntable to drive the forward and reverse lead screws to rotate. The two first threaded sleeves on the forward and reverse lead screws move towards or away from each other along the first guide rod under the action of the threads. Through the transmission of the first movable block, the linkage rod, and the second movable block, the adjusting sleeves are driven upwards, thereby causing four second threaded sleeves to extend out of the sliding groove. This design can accommodate workpieces of various specifications, avoiding frequent clamping changes due to changes in workpiece specifications.

Description

Technical Field

[0001] This utility model relates to the field of clamping technology, specifically a chuck with extended jaws. Background Technology

[0002] In the machining industry, chucks, as key fixtures for fixing workpieces, act as a "bridge" between machine tools and workpieces, and are widely used in various metal cutting equipment such as lathes, milling machines, and grinding machines. From basic bar turning to complex box-shaped parts milling, from the machining of precision instrument parts to the manufacturing of heavy machinery components, chucks have always played an indispensable role.

[0003] Traditional chucks have several limitations: First, the fixed jaw length makes it difficult to accommodate the clamping requirements of long workpieces, and forced clamping can easily lead to insecure workpiece fixation, affecting machining accuracy; second, the clamping structure adjustment method is limited, mostly requiring manual adjustment of each jaw individually, which cannot achieve synchronous and precise adjustment, making it difficult to meet the needs of efficient and high-precision machining. Therefore, those skilled in the art have provided a chuck with extended jaws to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this invention is to provide a chuck with extended jaws to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An extended chuck with extended jaws includes a manual chuck, a clamping structure, and a press-fit structure. The manual chuck is characterized by having a first guide rod fixedly connected inside, a positive and negative lead screw rotatably connected inside, two first threaded sleeves threadedly connected to the positive and negative lead screws, a first movable block fixedly connected to the top of each first threaded sleeve, a linkage rod rotatably connected to the first movable block, a second movable block rotatably connected to the end of the linkage rod away from the first movable block, and an adjusting sleeve fixedly connected to the top of the second movable block. The adjusting sleeve has a clamping structure inside, and the top of the manual chuck has four sliding grooves, with second threaded sleeves slidably connected inside the grooves. The end of each second threaded sleeve is connected to a press-fit structure.

[0007] As a further embodiment of this utility model: the clamping structure includes a rotating cylinder, a first bevel gear, a second guide rod, a first threaded rod, and a second bevel gear. The bottom end of the adjusting sleeve is rotatably connected to the rotating cylinder, and the bottom end of the rotating cylinder is provided with an irregular groove. Four second guide rods arranged in a ring array are fixedly connected inside the adjusting sleeve, and four first threaded rods arranged in a ring array are rotatably connected inside the adjusting sleeve, and the first threaded rods are threadedly connected to the second threaded sleeve.

[0008] As a further embodiment of this utility model: the top end of the rotating cylinder is fixedly connected to the inside of the adjusting sleeve with a first bevel gear, and one end of each of the four first threaded rods is fixedly connected to a second bevel gear, and all four second bevel gears mesh with the first bevel gear.

[0009] As a further embodiment of this utility model: a round rod is rotatably connected to the bottom end of the manual chuck, and a second turntable is fixedly connected to the bottom end of the round rod. A shaped block is fixedly connected to the top end of the round rod through the inside of the manual chuck, and the shaped block is adapted to the shaped groove.

[0010] As a further embodiment of this utility model: the press-installation structure includes a third guide rod, a second threaded rod, a third threaded sleeve, a snap-fit ​​block, a connecting block, a snap-fit ​​groove, a pressure block, and a third turntable. The tops of the four second threaded sleeves are inclined, and the tops of the second threaded sleeves are attached to the connecting blocks. A snap-fit ​​groove is provided on one side wall of the connecting block, and the top of the connecting block is fixedly connected to the pressure block.

[0011] As a further embodiment of this utility model: each of the four second threaded sleeves is fixedly connected to a third guide rod at one end away from the other, and each of the four second threaded sleeves is rotatably connected to a second threaded rod at one end away from the other, with a third turntable fixedly connected to one end of the second threaded rod.

[0012] As a further embodiment of this utility model: a third threaded sleeve is threadedly connected to the second threaded rod, and a snap-fit ​​block adapted to the snap-fit ​​groove is fixedly connected to one end of the third threaded sleeve near the second threaded sleeve.

[0013] As a further improvement of this utility model: both ends of the positive and negative lead screws are fixedly connected to a first turntable via a manual chuck.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This device rotates the first turntable to drive the positive and negative lead screws to rotate. The two first threaded sleeves on the positive and negative lead screws move towards or away from each other along the first guide rod under the action of the threads. Through the transmission of the first movable block, the linkage rod and the second movable block, the adjusting sleeve is driven to move upward, thereby driving the four second threaded sleeves to extend out of the slide groove. It can be adapted to workpieces with large lengths and avoids frequent changes in fixtures due to changes in workpiece specifications.

[0016] This device uses a clamping structure to fix the workpiece. Rotating the second turntable drives the round rod to rotate, and the irregularly shaped block at the top of the rod rotates within an irregularly shaped groove at the bottom of the rotating cylinder. This drives the rotating cylinder and the first bevel gear to rotate. Through the meshing of the first bevel gear with several second bevel gears, the four first threaded rods rotate synchronously, causing several second threaded sleeves to move away from each other. The workpiece is then placed on a manual chuck. Rotating the second turntable again moves the second threaded sleeves closer together. Once the second threaded sleeves contact the workpiece, continuing to rotate the first turntable increases the clamping force, ensuring uniform force on the workpiece during processing. This effectively prevents workpiece deformation or displacement caused by uneven force, ensuring the stability of the processing. By flexibly adjusting the position of the second threaded sleeves, the effective clamping range of the jaws can be changed, allowing for the adaptation of workpieces of various specifications. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a chuck with extended jaws.

[0018] Figure 2 This is a top sectional view of a manual chuck in a type of chuck with extended jaws.

[0019] Figure 3 This is a top sectional view of the rotating cylinder in a chuck with extended jaws.

[0020] Figure 4 This is a top view of an irregularly shaped block in a chuck with extended jaws.

[0021] Figure 5 This is a top sectional view of a chuck with extended jaws.

[0022] Figure 6 This is a top sectional view of the adjusting sleeve in a chuck with extended jaws.

[0023] Figure 7 This is an enlarged view of A in a chuck with extended jaws.

[0024] In the diagram: 1. Manual chuck; 2. First guide rod; 3. Positive and negative lead screws; 4. First turntable; 5. First threaded sleeve; 6. First movable block; 7. Linkage rod; 8. Second movable block; 9. Adjusting sleeve; 10. Rotating cylinder; 11. Irregular groove; 12. Round rod; 13. Second turntable; 14. Irregular block; 15. First bevel gear; 16. Second guide rod; 17. First threaded rod; 18. Second bevel gear; 19. Second threaded sleeve; 20. Sliding groove; 21. Third guide rod; 22. Second threaded rod; 23. Third threaded sleeve; 24. Snap-fit ​​block; 25. Connecting block; 26. Snap-fit ​​groove; 27. Pressure block; 28. Third turntable. Detailed Implementation

[0025] 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.

[0026] Example 1: Refer to Figure 1-2 This embodiment provides a chuck with extended jaws, including a manual chuck 1, a clamping structure, and a press-mounting structure. The manual chuck 1 is characterized by having a first guide rod 2 fixedly connected inside, a positive and negative lead screw 3 rotatably connected inside, and a first turntable 4 fixedly connected to both ends of the positive and negative lead screw 3 passing through the manual chuck 1. Two first threaded sleeves 5 are threadedly connected to the positive and negative lead screw 3. A first movable block 6 is fixedly connected to the top of each first threaded sleeve 5. A linkage rod 7 is rotatably connected to the first movable block 6. A second movable block 8 is rotatably connected to the end of the linkage rod 7 away from the first movable block 6, and an adjusting sleeve 9 is fixedly connected to the top of the second movable block 8. A clamping structure is provided inside the adjusting sleeve 9. Four sliding grooves 20 are provided at the top of the manual chuck 1, and a second threaded sleeve 19 is slidably connected inside each sliding groove 20. A press-mounting structure is connected to the end of each second threaded sleeve 19.

[0027] In this embodiment, the second threaded sleeve 19 acts as a chuck. When the length of the chuck needs to be adjusted to accommodate workpieces of different sizes, the first turntable 4 is rotated to drive the positive and negative lead screws 3 to rotate. The two first threaded sleeves 5 on the positive and negative lead screws 3 move towards or away from each other along the first guide rod 2 under the action of the thread. Through the transmission of the first movable block 6, the linkage rod 7 and the second movable block 8, the adjusting sleeve 9 is driven to move upward, thereby driving the four second threaded sleeves 19 to extend out at the slide groove 20. This can accommodate workpieces of large length and avoid frequent changes in fixtures due to changes in workpiece specifications.

[0028] Example 2: Refer to Figure 1-6 This embodiment is based on the previous embodiment, but differs from the previous embodiment in that the clamping structure includes a rotating cylinder 10, a first bevel gear 15, a second guide rod 16, a first threaded rod 17, and a second bevel gear 18. The bottom end of the adjusting sleeve 9 is rotatably connected to the rotating cylinder 10, and the bottom end of the rotating cylinder 10 is provided with a special groove 11. Four second guide rods 16 arranged in a ring array are fixedly connected inside the adjusting sleeve 9, and four first threaded rods 17 arranged in a ring array are rotatably connected inside the adjusting sleeve 9, and the first threaded rods 17 are threadedly connected to the second threaded sleeve 19.

[0029] The top of the rotating cylinder 10 is fixedly connected to the inside of the adjusting sleeve 9 with a first bevel gear 15. One end of each of the four first threaded rods 17 is fixedly connected to a second bevel gear 18, and the four second bevel gears 18 mesh with the first bevel gear 15. The bottom of the manual chuck 1 is rotatably connected to a round rod 12, and the bottom of the round rod 12 is fixedly connected to a second turntable 13. The top of the round rod 12 is fixedly connected to the inside of the manual chuck 1 with a shaped block 14, and the shaped block 14 is adapted to the shaped groove 11.

[0030] In this embodiment, after the positions of several second threaded sleeves 19 are adjusted, the second turntable 13 is rotated first, driving the round rod 12 to rotate. The irregular block 14 at the top of the round rod 12 rotates in the irregular groove 11 at the bottom of the rotating cylinder 10, thereby driving the rotating cylinder 10 to rotate in the adjusting sleeve 9. The first bevel gear 15 at the top of the rotating cylinder 10 rotates accordingly. Through meshing with the second bevel gears 18 at the ends of the four first threaded rods 17, the four first threaded rods 17 rotate synchronously. Because the first threaded rods 17 are threadedly connected to the second threaded sleeves 19, and the second threaded sleeves 19 are restricted by the sliding groove 20 to slide only in a straight line, the rotational motion of the first threaded rods 17 is converted into the rotation of the second threaded sleeves 19. The linear motion of the 9 causes several second threaded sleeves 19 to move away from each other. Then, the workpiece to be processed is placed on the manual chuck 1, and the second turntable 13 is rotated to cause several second threaded sleeves 19 to move closer to each other. When the second threaded sleeves 19 contact the workpiece, the first turntable 4 is rotated to increase the clamping force, so that the workpiece is subjected to uniform force during processing, effectively avoiding workpiece deformation or displacement caused by uneven force, and ensuring the stability of the processing process. By flexibly adjusting the position of the second threaded sleeves 19, the effective clamping range of the jaws can be changed, which can adapt to workpieces of various specifications, expand the application scenarios of the chuck, reduce the frequency of chuck replacement due to differences in workpiece size, and reduce equipment costs.

[0031] Example 3: Reference Figure 1-7 This embodiment is based on the previous embodiment, but differs from the previous embodiment in that the press-installation structure includes a third guide rod 21, a second threaded rod 22, a third threaded sleeve 23, a snap-fit ​​block 24, a connecting block 25, a snap-fit ​​groove 26, a pressure block 27, and a third turntable 28. The tops of the four second threaded sleeves 19 are inclined, and the tops of the second threaded sleeves 19 are attached to the connecting blocks 25. The snap-fit ​​groove 26 is provided on one side wall of the connecting block 25, and the pressure block 27 is fixedly connected to the top of the connecting block 25.

[0032] Each of the four second threaded sleeves 19 is fixedly connected to a third guide rod 21 at one end away from each other, and each of the four second threaded sleeves 19 is rotatably connected to a second threaded rod 22 at one end. A third turntable 28 is fixedly connected to one end of the second threaded rod 22, and a third threaded sleeve 23 is threadedly connected to the second threaded rod 22. A snap-fit ​​block 24 that matches the snap-fit ​​groove 26 is fixedly connected to one end of the third threaded sleeve 23 near the second threaded sleeve 19.

[0033] In this embodiment, the connecting block 25 is first pressed against the second threaded sleeve 19. Then, the second threaded rod 22 is rotated by rotating the third turntable 28. Since the third threaded sleeve 23 is threadedly connected to the second threaded rod 22, the third threaded sleeve 23 will move along the axial direction of the second threaded rod 22, pushing the snap-fit ​​block 24 into the snap-fit ​​groove 26 of the connecting block 25. As the third threaded sleeve 23 continues to move, the snap-fit ​​block 24 is tightly engaged, so that the connecting block 25 and the second threaded sleeve 19 are connected and fixed together. Then, the pressure block 27 is installed on the top of the second threaded sleeve 19. When disassembling, the third turntable 28 is rotated in the opposite direction, and the third threaded sleeve 23 drives the snap-fit ​​block 24 to exit from the snap-fit ​​groove 26, so that the pressure block 27 can be quickly removed without complicated bolt disassembly operations, which greatly shortens the installation and disassembly time. The pressure block 27 is used to complete the clamping operation of the workpiece to be clamped, so as to effectively prevent the workpiece from loosening due to vibration during processing.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A jaw lengthened chuck comprising a manual chuck (1), a clamping structure, and a press-fitting structure, characterized in that, The manual chuck (1) is fixedly connected to a first guide rod (2), and the manual chuck (1) is rotatably connected to a positive and negative screw rod (3). The positive and negative screw rod (3) is threaded with two first threaded sleeves (5). The top of the first threaded sleeve (5) is fixedly connected to a first movable block (6). The first movable block (6) is rotatably connected to a linkage rod (7). The end of the linkage rod (7) away from the first movable block (6) is rotatably connected to a second movable block (8). The top of the second movable block (8) is fixedly connected to an adjusting sleeve (9). The adjusting sleeve (9) is provided with a clamping structure. The top of the manual chuck (1) is provided with four sliding grooves (20). The sliding grooves (20) are slidably connected to a second threaded sleeve (19). The end of the second threaded sleeve (19) is connected to a pressing installation structure.

2. The clamping chuck according to claim 1, wherein The clamping structure includes a rotating cylinder (10), a first bevel gear (15), a second guide rod (16), a first threaded rod (17), and a second bevel gear (18). The bottom end of the adjusting sleeve (9) is rotatably connected to the rotating cylinder (10), and the bottom end of the rotating cylinder (10) is provided with a shaped groove (11). Four second guide rods (16) arranged in a ring array are fixedly connected inside the adjusting sleeve (9), and four first threaded rods (17) arranged in a ring array are rotatably connected inside the adjusting sleeve (9). The first threaded rods (17) are threadedly connected to the second threaded sleeve (19).

3. The lengthened jaw chuck according to claim 2, wherein The top of the rotating cylinder (10) extends through the inside of the adjusting sleeve (9) and is fixedly connected to a first bevel gear (15). One end of each of the four first threaded rods (17) is fixedly connected to a second bevel gear (18), and each of the four second bevel gears (18) meshes with the first bevel gear (15).

4. A chuck with extended jaws according to claim 1, characterized in that, The bottom end of the manual chuck (1) is rotatably connected to a round rod (12), and the bottom end of the round rod (12) is fixedly connected to a second turntable (13). The top end of the round rod (12) extends through the inside of the manual chuck (1) and is fixedly connected to a shaped block (14). The shaped block (14) is adapted to the shaped groove (11).

5. A chuck with extended jaws according to claim 1, characterized in that, The press-fit installation structure includes a third guide rod (21), a second threaded rod (22), a third threaded sleeve (23), a snap-fit ​​block (24), a connecting block (25), a snap-fit ​​groove (26), a pressure block (27), and a third turntable (28). The tops of the four second threaded sleeves (19) are inclined, and the tops of the second threaded sleeves (19) are attached to the connecting block (25). A snap-fit ​​groove (26) is provided on one side wall of the connecting block (25), and the top of the connecting block (25) is fixedly connected to the pressure block (27).

6. A chuck with extended jaws according to claim 1, characterized in that, Each of the four second threaded sleeves (19) is fixedly connected to a third guide rod (21) at one end away from each other, and each of the four second threaded sleeves (19) is rotatably connected to a second threaded rod (22) at one end of the second threaded rod (22), and a third turntable (28) is fixedly connected to one end of the second threaded rod (22).

7. A chuck with extended jaws according to claim 6, characterized in that, The second threaded rod (22) is threaded with a third threaded sleeve (23), and the third threaded sleeve (23) is fixedly connected to a snap-fit ​​block (24) that is compatible with the snap-fit ​​groove (26) at one end near the second threaded sleeve (19).

8. A chuck with extended jaws according to claim 1, characterized in that, Both ends of the positive and negative lead screws (3) are fixedly connected to the first turntable (4) through the manual chuck (1).

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