chuck

Abstract

The utility model aims at providing a chuck, including base and clamping assembly, clamping assembly includes rotating ring, torsion block, a plurality of claw blocks and a plurality of adjusting parts, rotating ring coaxial rotation setting on the base, torsion block rotation setting on the base, and torsion block is engaged with rotating ring, each claw block is position adjustable and is slidably arranged on the base, each adjusting part is all worn on the base, each claw block and each adjusting part are all with the axle of base as the center along the radial equal angle distribution, and the outside wall of each adjusting part is respectively one to one and each claw block is screwed, and the end of each adjusting part is engaged with rotating ring, and torsion block is used to drive rotating ring to rotate relative to base, rotating ring drives each adjusting part to rotate synchronously to make each claw block common clamping work piece, when any one adjusting part is pulled by external force to separate from the engagement of rotating ring, can independently drive a claw block to slide. In this way, flexibility and high efficiency are taken into account, and the processing efficiency is significantly improved.

Description

Technical Field

[0001] This utility model relates to the technical field of metal processing, and in particular to a chuck. Background Technology

[0002] In the field of machining, stable workpiece clamping is a key prerequisite for ensuring machining accuracy and improving production efficiency. As a core machine tool accessory, the chuck plays a crucial role in providing reliable clamping for various workpieces. It is widely used in various cutting processes such as turning, milling, and grinding. With its unique structural advantages, the chuck has become an important tool for handling complex machining needs. The chuck is equipped with several jaws, evenly distributed along its circumference, and each jaw has independent forward and backward adjustment capabilities. This independent adjustment feature allows the chuck to flexibly adapt to workpieces of different diameters and shapes. Whether it is a standard round workpiece or a non-standard irregular workpiece, precise positioning and stable fixation of the workpiece can be achieved by individually adjusting the position and clamping pressure of each jaw.

[0003] However, existing chucks have the following shortcomings in practical use: While the independently adjustable jaws can adapt to various workpiece shapes when machining irregular workpieces, the increasing demands for diverse machining scenarios and higher machining efficiency in the machining industry mean that a single independent adjustment function is insufficient to meet the needs of complex working conditions. For example, when batch machining circular workpieces of the same specifications, relying on the independent adjustment of each jaw for clamping is not only cumbersome but also prone to inconsistent workpiece positioning accuracy due to human error, which also affects machining efficiency. Therefore, this proposed chuck is submitted. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a chuck with dual drive functions of independent adjustment and synchronous adjustment, and the two adjustment modes can be flexibly switched, taking into account both the flexibility of clamping irregular workpieces and the high efficiency of clamping regular workpieces, so as to improve processing efficiency.

[0005] The objective of this utility model is achieved through the following technical solution: A chuck, comprising: Base; and A clamping assembly includes a rotating ring, a torsion block, several claw blocks, and several adjusting components. The rotating ring is rotatably mounted on the base, and the torsion block is rotatably mounted on the base and engages with the rotating ring. Each claw block is slidably mounted on the base in an adjustable position. Each adjusting component passes through the base. Each claw block and each adjusting component is radially distributed at equal angles around the axis of the base. The outer side wall of each adjusting component is screwed to each claw block in a corresponding manner, and the end of each adjusting component engages with the rotating ring. The torsion block drives the rotating ring to rotate relative to the base. The rotating ring drives each adjusting component to rotate synchronously so that each claw block clamps the workpiece together. When any adjusting component is pulled by an external force to disengage from the rotating ring, it can independently drive one of the claw blocks to slide.

[0006] Optionally, the adjusting component includes a plug rod and a screw tube, the screw tube being rotatably mounted on the base, the plug rod passing through the screw tube, the outer wall of the screw tube being screwed to the claw block, and the end of the plug rod being provided with a toothed block, the toothed block engaging with the swivel ring.

[0007] Optionally, the base is provided with a plurality of sliding grooves and a plurality of through grooves. Each sliding groove and each through groove is distributed radially at equal angles with the axis of the base as the center. Each sliding groove and each through groove are connected in parallel. Each claw block is slidably disposed in the sliding groove in a corresponding manner. Each screw tube is rotatably disposed in the through groove in a corresponding manner.

[0008] Optionally, the adjusting component further includes locking pins, each of which is inserted through the base and one end of each locking pin extends into the through groove, and each locking pin is engaged with each of the screw tubes in a corresponding manner.

[0009] Optionally, a slot is provided inside the spiral tube, and a retaining strip is provided on the insert rod, the retaining strip engaging with the slot.

[0010] Optionally, the adjusting member further includes an end block and a return spring. The end block is disposed on the end of the insert rod away from the toothed block, and the return spring is disposed on the insert rod. The two ends of the return spring abut against the end block and the solenoid, respectively. The return spring is used to push the insert rod to slide, so that the toothed block and the rotating ring remain engaged.

[0011] Optionally, the clamping assembly further includes a plurality of side top members, each of which is disposed on the base and is distributed at equal angles along the circumference of the base, and each of the side top members is engaged with each of the adjusting members in a corresponding manner.

[0012] Optionally, the side top member includes a carrier plate, a top plate, and a push spring. The carrier plate is disposed on the base, and the top plate is slidably disposed on the carrier plate. The push spring pushes the top plate to engage with the insertion rod, thereby keeping the toothed block engaged with or disengaged from the rotating ring.

[0013] Optionally, the claw block has a stepped portion, which gradually rises towards the axis of the base.

[0014] Optionally, the claw block is provided with several anti-slip grooves.

[0015] Compared with the prior art, the present invention has at least the following advantages: This invention's chuck, during synchronous adjustment, uses a torsion block to drive a rotating ring, which in turn drives each insert rod and solenoid to rotate synchronously via a toothed block, causing each jaw block to clamp the workpiece synchronously along its respective slide groove. During independent adjustment, pulling the insert rod disengages the toothed block from the rotating ring, and the side support locks the insert rod's position, allowing for individual adjustment of the jaw blocks. Thus, by switching between synchronous and independent adjustment, it can meet the needs of batch processing of regular workpieces and processing of irregular workpieces, balancing flexibility and high efficiency, and significantly improving processing efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a chuck according to one embodiment of the present invention; Figure 2 This is a schematic cross-sectional view of a chuck according to one embodiment of the present invention; Figure 3 for Figure 2 A magnified schematic diagram of the structure of part A in the diagram; Figure 4 for Figure 2 A magnified schematic diagram of the partial structure of B in the diagram; Figure 5 This is a partial structural diagram of a chuck according to one embodiment of the present invention; Figure 6 for Figure 5 A magnified schematic diagram of the structure of C in the middle; Figure 7 for Figure 5 A magnified schematic diagram of the local structure of D; Figure 8 This is a schematic diagram of the base according to one embodiment of the present invention; Figure 9 This is a schematic diagram of the insertion rod according to one embodiment of the present invention; Figure 10 This is a schematic diagram of the structure of a solenoid according to one embodiment of the present invention; Figure 11 This is a structural schematic diagram showing the location of the annular groove in one embodiment of the present invention; Figure 12 This is a structural schematic diagram showing the location of the circular groove in one embodiment of the present invention; Figure 13 This is a schematic diagram of the structure of the card post according to one embodiment of the present invention; Figure 14 This is an exploded structural diagram of the side top component according to one embodiment of the present invention.

[0018] Explanation of reference numerals in the attached figures: 1. Chuck; 10. Base; 100. Slide groove; 101. Through groove; 102. Center hole; 103. Guide groove; 20. Rotary ring; 21. Torsion block; 22. Claw block; 220. Stepped part; 221. Anti-slip groove; 230. Insert rod; 2300. Tooth block; 2301. Locking strip; 231. Screw tube; 2310. Locking groove; 2311. Circular groove; 2312. Ring groove; 232. Locking post; 2320. Semicircular part; 2321. Guide rail; 233. End block; 234. Return spring; 24. Side top piece; 240. Carrier plate; 241. Top plate; 242. Push spring; 25. Crossbar. Detailed Implementation

[0019] To facilitate understanding of this utility model, a more comprehensive description will be provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model.

[0020] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0023] like Figures 1 to 14 As shown, in one embodiment, a chuck 1 includes a base 10 and a clamping assembly. The clamping assembly includes a rotating ring 20, a torsion block 21, several claw blocks 22, and several adjusting members. The rotating ring 20 is rotatably mounted on the base 10, and the torsion block 21 is rotatably mounted on the base 10 and engages with the rotating ring 20. Each claw block 22 is slidably mounted on the base 10 in an adjustable position. Each adjusting member passes through the base 10. Each claw block 22 and each adjusting member are distributed radially at equal angles around the axis of the base 10. The outer side wall of each adjusting member is screwed to each claw block 22 in a corresponding manner, and the end of each adjusting member engages with the rotating ring 20. The torsion block 21 is used to drive the rotating ring 20 to rotate relative to the base 10. The rotating ring 20 drives each adjusting member to rotate synchronously so that each claw block 22 clamps the workpiece together. When any adjusting member is pulled by an external force to disengage from the rotating ring 20, it can independently drive one claw block 22 to slide.

[0024] It should be noted that the rotating ring 20 is rotatably mounted on the base 10 in a manner coaxial with the base 10, ensuring that the rotating ring 20 remains stable around the central axis of the base 10 during rotation; the torsion block 21 is rotatably mounted on the outer wall of the base 10, and the axis of the torsion block 21 is perpendicular to the axis of the base 10, and the teeth of the torsion block 21 mesh with the teeth of the rotating ring 20 to form a transmission engagement; each claw block 22 adopts a position-adjustable sliding assembly structure, which can slide flexibly along the radial direction of the base 10, and each claw block 22 is in a position The adjustment components are distributed at equal angles; each adjustment component is inserted into the base 10, and each claw block 22 and each adjustment component are arranged in a ring at equal angles along the radial direction of the base 10 with the axis of the base 10 as the center. At the same time, the outer side wall of each adjustment component is machined with external threads, and each claw block 22 is provided with corresponding internal thread holes. The outer side wall of each adjustment component is screwed into the internal thread holes of each claw block 22, and the end of each adjustment component near the rotating ring 20 is engaged with the rotating ring 20 to realize the transmission connection between the adjustment component and the rotating ring 20. When synchronous clamping of the workpiece is required, the operator rotates the torsion block 21. The torsion block 21, through meshing with the rotating ring 20, drives the rotating ring 20 to rotate relative to the base 10. The rotating ring 20 further drives all the adjusting components to rotate synchronously through meshing with the ends of each adjusting component. Since the adjusting components are screwed to the claw blocks 22, the synchronous rotation of the adjusting components is converted into synchronous sliding of each claw block 22 along the radial direction of the base 10. This causes each claw block 22 to move together towards the workpiece, achieving centered and stable clamping of the workpiece, ensuring the machining of regular workpieces. The positioning accuracy and clamping efficiency are improved. When it is necessary to independently clamp irregular workpieces or adjust the position of a single jaw block 22, only an external force along its axial direction (such as pulling the adjusting component outward) needs to be applied to any adjusting component, so that the meshing teeth at the end of the adjusting component disengage from the rotating ring 20. At this time, the adjusting component is no longer subject to the synchronous constraint of the rotating ring 20, and the operator can rotate the adjusting component independently. Through the screw connection between the adjusting component and the jaw block 22, the corresponding single jaw block 22 is driven to slide radially along the base 10, thereby realizing the independent position adjustment of a single jaw block 22. In this way, the flexibility requirements for clamping irregular workpieces are met, and the cumbersome operation of adjusting all jaw blocks 22 in steps is avoided. This effectively improves the adaptability and working condition switching efficiency of the chuck 1. At the same time, the equiangular distribution design of each component further ensures the uniformity of the force applied by each jaw block 22 during synchronous clamping, reduces the risk of workpiece deformation during clamping, and improves the processing quality.

[0025] like Figures 1 to 13 As shown, in one embodiment, the adjusting member includes a rod 230 and a screw tube 231. The screw tube 231 is rotatably mounted on the base 10. The rod 230 passes through the screw tube 231. The outer wall of the screw tube 231 is screwed to the claw block 22. The end of the rod 230 is provided with a toothed block 2300, which meshes with the rotating ring 20.

[0026] It should be noted that the solenoid 231 is mounted on the base 10 by rotational assembly, and it can rotate flexibly relative to the base 10 around its own axis. The outer wall of the solenoid 231 is machined with external threads, and the claw block 22 of the chuck 1 is provided with an internal thread hole that matches the external thread. The outer wall of the solenoid 231 and the internal thread hole of the claw block 22 form a threaded connection, realizing the transmission connection between the solenoid 231 and the claw block 22. The insert rod 230 is inserted into the internal through hole of the solenoid 231 by sliding engagement. The insert rod 230 can slide back and forth along the axial direction of the solenoid 231. A toothed block 2300 is fixedly provided at the end of the insert rod 230 near the rotating ring 20. The tooth shape of the toothed block 2300 matches the tooth shape of the rotating ring 20, and the toothed block 2300 and the rotating ring 20 mesh with each other. When the rotating ring 20 rotates, it drives the insert rods 230 to rotate synchronously by meshing with the toothed blocks 2300 at the ends of each insert rod 230. Since the insert rods 230 are inserted into the screw tube 231, the rotation of the insert rods 230 will drive the screw tube 231 to rotate together. The screw tube 231 is screwed to the claw block 22, and the rotation of the screw tube 231 will be converted into the sliding of the claw block 22 along the radial direction of the base 10, thereby realizing the synchronous sliding of each claw block 22 to improve the working efficiency when batch processing round workpieces of the same specification. At the same time, when it is necessary to adjust a certain claw block 22 individually, simply pull the insert rod 230 axially to disengage the toothed blocks 2300 at the ends of the insert rod 230 from the rotating ring 20. At this time, the transmission relationship between the insert rod 230 and the rotating ring 20 is broken, and the operator can rotate the insert rod 230 individually. The insert rod 230 drives the screw tube 231 to rotate and drives the claw block 22 to slide, realizing the independent adjustment of a single claw block 22 to meet the needs of processing regular workpieces.

[0027] like Figure 4 , Figure 8 As shown, in one embodiment, the base 10 is provided with a plurality of sliding grooves 100 and a plurality of through grooves 101. Each sliding groove 100 and each through groove 101 is distributed radially at equal angles with the axis of the base 10 as the center. Each sliding groove 100 and each through groove 101 are connected in parallel. Each claw block 22 is slidably disposed in the sliding groove 100 in a corresponding manner. Each screw tube 231 is rotatably disposed in the through groove 101 in a corresponding manner.

[0028] It should be noted that each slide groove 100 and each through groove 101 extends radially from the axis of the base 10. A central hole 102 is provided on the base 10. The two ends of each slide groove 100 and each through groove 101 are respectively connected to the inner wall of the central hole 102 and the outer wall of the base 10. The slide grooves 100 are arranged in a ring at equal angular intervals, and each slide groove 100 and each through groove 101 are parallel and interconnected, forming an independent assembly space for the sliding of the claw block 22 and the rotation of the screw tube 231. Simultaneously, each claw block 22 of the chuck 1 forms a one-to-one mating relationship with these slide grooves 100. Sliding portions are provided on both sides of the 0-facing sides. Protrusions adapted to the sliding portions are provided on both sides of the claw block 22. Each claw block 22 is engaged with the sliding portion through the protrusions, so that it is embedded into each corresponding slide groove 100. Furthermore, each screw tube 231 is correspondingly provided in each through groove 101. The screw tube 231 can rotate stably around its own axis in the through groove 101. Since the through groove 101 is connected to the corresponding slide groove 100, the outer wall of the screw tube 231 can form a screw engagement with the threaded structure of the claw block 22 in the slide groove 100. In this way, the claw block 22 can slide flexibly along the extension direction of the slide groove 100, so that the position of the claw block 22 on the base 10 is adjustable.

[0029] like Figure 2 , Figure 5 , Figure 13 As shown, in one embodiment, the adjusting member further includes locking pins 232, each locking pin 232 is inserted through the base 10, and one end of each locking pin 232 extends into the through groove 101, and each locking pin 232 is engaged with each screw tube 231 in a corresponding manner.

[0030] It should be noted that the base 10 is also provided with several mounting holes, each of which is opened along the axial direction of the base 10, and each mounting hole extends from the bottom surface of the base 10 to the corresponding through groove 101. Furthermore, the axial direction of the locking post 232 is perpendicular to the opening direction of the through groove 101. Further, an annular groove 2312 is also provided on the outer wall of the screw tube 231, and a semi-circular portion 2320 is provided on the end face of the locking post 232 that extends into the through groove 101. Each locking post 232 drives the semi-circular portion 2320 to extend into the through groove 101 and fit into the annular groove 2312 to achieve axial and circumferential positioning of the screw tube 231 by the locking post 232, so that the screw tube 231 can only rotate relative to the through groove 101 and cannot slide along the axial direction.

[0031] It should be noted that a guide groove 103 is provided on the inner side wall of the mounting hole, and the guide groove 103 is provided along the axial direction of the mounting hole; a guide rail 2321 is provided on the outer side wall of the locking post 232, and the guide rail 2321 is provided along the axial direction of the locking post 232; the guide rail 2321 is slidably engaged with the guide groove 103, so that after the locking post 232 drives the semicircular part to pass through the mounting hole and extend into the through groove 101, the semicircular part and the through groove 101 are kept coaxially aligned.

[0032] like Figures 9 to 12 As shown, in one embodiment, a slot 2310 is provided inside the screw tube 231, and a retaining strip 2301 is provided on the insert rod 230, which engages with the slot 2310.

[0033] It should be noted that the screw tube 231 is a tubular structure, and its inner sidewall is provided with a number of slots 2310 along the axial direction of the screw tube 231. Each slot 2310 is distributed at an equal angle and passes through both ends of the screw tube 231. Furthermore, a number of retaining strips 2301 are provided on the outer sidewall of the insertion rod 230 along the axial direction. Each retaining strip 2301 is distributed at an equal angle and extends from one end of the insertion rod 230 to the other end. When the insert rod 230 is inserted into the screw tube 231, each retaining strip 2301 on the insert rod 230 corresponds to a retaining groove 2310 on the inner wall of the screw tube 231, allowing the retaining strip 2301 to slide freely along the axial direction of the retaining groove 2310. Simultaneously, the retaining groove 2310 restricts the circumferential rotation of the retaining strip 2301 around the axis of the insert rod 230, thus achieving a circumferentially fixed and axially sliding connection between the screw tube 231 and the insert rod 230. When the rotating ring 20 drives the insert rod 230 to rotate, the insert rod 230, through the circumferential constraint of the retaining strip 2301 and the retaining groove 2310, drives the screw tube 231 to rotate together, and the screw tube 231 is screwed to the claw block 22. This allows the screw tube 231 to rotate, causing the claw block 22 to slide radially along the base 10. When it is necessary to adjust one of the claw blocks 22 individually, the operator pulls the insert rod 230 axially. The locking strips 2301 on the insert rod 230 can slide axially along the locking grooves 2310 on the inner wall of the screw tube 231. When the toothed block 2300 at the end of the insert rod 230 disengages from the rotating ring 20, the insert rod 230 can still drive the screw tube 231 to rotate through the locking strips 2301, thereby realizing the sliding of the claw block 22 individually and ensuring the feasibility of independent adjustment.

[0034] like Figure 2 , Figure 4 , Figure 9As shown, in one embodiment, the adjusting member further includes an end block 233 and a return spring 234. The end block 233 is disposed on the end of the insert rod 230 away from the toothed block 2300. The return spring 234 is disposed on the insert rod 230. The two ends of the return spring 234 abut against the end block 233 and the screw tube 231 respectively. The return spring 234 is used to push the insert rod 230 to slide, so that the toothed block 2300 and the rotating ring 20 are engaged.

[0035] It should be noted that the end block 233 is coaxially fixed to the end of the insertion rod 230 away from the toothed block 2300 by screws, while the end of the screw tube 231 near the central hole 102 has a circular groove 2311. The diameter of the end block 233 matches the diameter of the circular groove 2311, and the diameter of the end block 233 is larger than the outer diameter of the insertion rod 230. The return spring 234 is sleeved on the outer wall of the insertion rod 230, and the two ends of the return spring 234 abut against the inner bottom wall of the end block 233 and the circular groove 2311, respectively. In the natural state, the return spring 234 exerts a pushing force on the end block 233 towards the central hole 102 through its own elastic force, causing the insertion rod 230 to slide axially towards the central hole 102, thereby causing the insertion rod 230 to drive the toothed block 2300 to maintain engagement with the rotating ring 20. When the operator pulls the insert rod 230 outward to achieve independent adjustment of each individual claw block 22, causing the toothed block 2300 to disengage from the rotating ring 20, simply releasing the insert rod 230 will cause the return spring 234 to automatically reset the end block 233 and the insert rod 230 under the action of elastic restoring force, allowing the toothed block 2300 to re-engage with the rotating ring 20. Since the chuck 1 needs to be installed on the machine tool and operate in the horizontal axis direction, if the insert rod 230 lacks a reset constraint during the high-speed rotation of the workpiece driven by the chuck 1, each insert rod 230 will slide outward along the axial direction away from the axis of the base 10 due to centrifugal force. Furthermore, since the insert rods 230 around the base 10 are subjected to different combined effects of gravity and centrifugal force when horizontally installed, the insert rods 230 in different positions will experience varying degrees of sliding offset, resulting in a deviation in the coaxiality of the axis of each insert rod 230 with the axis of the base 10 (i.e., eccentricity). This leads to a shift in the center of gravity and increased vibration when the chuck 1 rotates, seriously affecting the clamping stability and machining accuracy. During the rotation of the chuck 1, the continuous pushing force of the return spring 234 always overcomes the centrifugal force, pulling each insertion rod 230 towards the central hole 102, ensuring that each insertion rod 230 always maintains coaxiality with the axis of the base 10 during rotation, avoiding uneven force due to eccentricity; thus, the chuck 1 can still maintain the symmetrical distribution of each insertion rod 230 under high-speed rotation conditions, significantly reducing vibration and noise during rotation, improving the stability and service life of the chuck 1, and is especially suitable for high-precision, high-speed cutting machining scenarios.

[0036] like Figures 1 to 3 , Figures 5 to 7 , Figure 14As shown, in one embodiment, the clamping assembly further includes a plurality of side top members 24, each side top member 24 being disposed on the base 10, and each side top member 24 being distributed at equal angles along the circumference of the base 10, and each side top member 24 being engaged with each adjusting member in a corresponding manner.

[0037] It should be noted that each side top member 24 is fixedly installed on the base 10, and all side top members 24 are distributed at equal angular intervals along the circumference of the base 10 with the axis of the base 10 as the center. At the same time, each side top member 24 forms a one-to-one snap-fit ​​engagement with each adjusting member. The movable end of each side top member 24 extends axially and engages with the toothed block 2300 on the corresponding insertion rod 230 to achieve axial limiting of the insertion rod 230. Furthermore, the movable end of each side top member 24 extends axially relative to the rotating ring 20 to rest on the side of each toothed block 2300 away from the central hole 102, so that the insertion rod 230 cannot slide. With the joint cooperation of the movable end of the side top member 24 and the return spring 234, the sliding of each insertion rod 230 is further restricted to ensure that each insertion rod 230 always maintains coaxiality with the axis of the base 10 during rotation. When it is necessary to adjust the claw block 22 separately and pull the insertion rod 230 to disengage the toothed block 2300 from the rotating ring 20, the movable structure of the side top member 24 can be stopped on the side of the toothed block 2300 near the center hole 102, so that the insertion rod 230 is kept away from the center hole 102, and the toothed block 2300 is disengaged from the rotating ring 20. In this way, the operator does not need to continuously apply outward pulling force to overcome the elastic force of the return spring 234, and can keep the toothed block 2300 in a disengaged state, so as to free the operator's hands to focus on adjusting the claw block 22 and improve the convenience of independent adjustment.

[0038] like Figures 1 to 3 , Figures 5 to 7 , Figure 14 As shown, in one embodiment, the side top member 24 includes a carrier plate 240, a top plate 241, and a push spring 242. The carrier plate 240 is disposed on the base 10, and the top plate 241 is slidably disposed on the carrier plate 240. The push spring 242 pushes the top plate 241, so that the top plate 241 is engaged with the insert rod 230, thereby keeping the tooth block 2300 in an engaged state or in a disengaged state with the rotating ring 20.

[0039] It should be noted that the carrier plate 240 is fixed to the base 10 by bolts, and the carrier plate 240 has a top groove extending in a direction perpendicular to the axis of the insertion rod 230; the top plate 241 is a sheet structure, the top plate 241 is slidably disposed in the top groove, and the top plate 241 can slide back and forth in a direction close to or away from the insertion rod 230; the end of the top plate 241 away from the insertion rod 230 has a mounting hole for installing the push spring 242. When the push spring 242 is placed in the mounting hole, the push spring 242 can extend relative to the end face of the top plate 241 and abut against the inner bottom wall of the top groove. Thus, in the natural state, the push spring 242 is in the extended state, and pushes the top plate 241 towards the insertion rod 230 by its own elastic force, so that the top plate 241 abuts against any side of the toothed block 2300. Thus, when the chuck 1 is in synchronous clamping mode, the return spring 234 pushes the insert rod 230 to make the toothed block 2300 mesh with the rotating ring 20. At this time, the push spring 242 pushes the top plate 241 close to the insert rod 230 and stops on the side of the toothed block 2300 away from the center hole 102. Under the double limit of the top plate 241 and the return spring 234, the axial stability of each insert rod 230 and the reliability of the rotating ring 20 driving each adjusting component to rotate synchronously are ensured. When it is necessary to switch to independent adjustment mode, the operator first presses the top plate 241 down to... Retracting into the top groove, and then pulling the insert rod 230 outward away from the center hole 102, the insert rod 230 overcomes the elastic force of the return spring 234, causing the toothed block 2300 to disengage from the rotating ring 20. When the top plate 241 is released, the push spring 242 pushes the top plate 241 close to the insert rod 230 so that it stops on the side of the toothed block 2300 closest to the center hole 102, locking the insert rod 230 in the disengaged position. The toothed block 2300 and the rotating ring 20 can be kept separated without continuous force, making it convenient for the operator to rotate the insert rod 230 to adjust the claw block 22. In this way, the top plate 241 can flexibly switch the engagement position, allowing for quick switching between the engagement and disengagement states, further improving the durability and operational efficiency of the chuck 1 in high-frequency operating condition switching scenarios.

[0040] like Figures 1 to 2 , Figure 5 As shown, in one embodiment, the claw block 22 has a stepped portion 220, which gradually rises towards the axis of the base 10.

[0041] It should be noted that the stepped portion 220 is located at the end of the claw block 22 away from the upper slide groove 100 of the base 10, forming a multi-level stepped structure in the direction perpendicular to the plane of the base 10. The end face of each step is perpendicular to the direction of the claw block 22 pointing towards the axis of the base 10. At the same time, the entire stepped portion 220 gradually rises from the side away from the axis of the base 10 to the side closer to the axis of the base 10, that is, the height of the stepped surface closer to the axis of the base 10 is higher than that of the stepped surface away from the axis of the base 10. In this way, the multi-level stepped surfaces of the stepped portion 220 can provide differentiated clamping support points. For example, when clamping small-diameter workpieces, the outer wall of the workpiece is in contact with the higher stepped surface closer to the axis of the base 10, and when clamping large-diameter workpieces, the outer wall of the workpiece is in contact with the lower stepped surface away from the axis of the base 10. Stable clamping of workpieces of various specifications can be achieved without changing the claw block 22, which greatly expands the applicability of the chuck 1 and reduces the time cost of frequently changing fixtures.

[0042] like Figures 1 to 2 , Figures 5 to 6 As shown, in one embodiment, the claw block 22 is provided with a plurality of anti-slip grooves 221.

[0043] It should be noted that each anti-slip groove 221 is distributed at intervals along the height direction of the claw block 22, and each slide groove 100 is opened through the circumference of the base 10; the cross section of the anti-slip groove 221 is V-shaped, which further enhances the stability and reliability of workpiece clamping.

[0044] like Figure 1 , Figure 3 , Figures 5 to 7 , Figure 9 As shown, in one embodiment, both the insertion rod 230 and the twist block 21 are provided with horizontal bars 25.

[0045] It should be noted that the horizontal bar 25 is integrally formed on the end face of the insertion rod 230 / twist block 21 away from the base 10, and the two ends of the horizontal bar 25 extend radially relative to the insertion rod 230 / twist block 21 to form a structure that can be manually twisted; thus, the operator can operate quickly without the aid of tools, thereby improving work efficiency.

[0046] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A chuck, characterized in that, include: Base; and A clamping assembly includes a rotating ring, a torsion block, several claw blocks, and several adjusting components. The rotating ring is rotatably mounted on the base, and the torsion block is rotatably mounted on the base and engages with the rotating ring. Each claw block is slidably mounted on the base in an adjustable position. Each adjusting component passes through the base. Each claw block and each adjusting component is radially distributed at equal angles around the axis of the base. The outer side wall of each adjusting component is screwed to each claw block in a corresponding manner, and the end of each adjusting component engages with the rotating ring. The torsion block drives the rotating ring to rotate relative to the base. The rotating ring drives each adjusting component to rotate synchronously so that each claw block clamps the workpiece together. When any adjusting component is pulled by an external force to disengage from the rotating ring, it can independently drive one of the claw blocks to slide.

2. The chuck according to claim 1, characterized in that, The adjusting component includes a plug rod and a screw tube. The screw tube is rotatably mounted on the base. The plug rod passes through the screw tube. The outer wall of the screw tube is screwed to the claw block. The end of the plug rod is provided with a toothed block, which meshes with the swivel ring.

3. The chuck according to claim 2, characterized in that, The base is provided with a plurality of sliding grooves and a plurality of through grooves. Each sliding groove and each through groove is distributed radially at equal angles with the axis of the base as the center. Each sliding groove and each through groove are connected in parallel. Each claw block is slidably disposed in the sliding groove in a corresponding manner. Each screw tube is rotatably disposed in the through groove in a corresponding manner.

4. The chuck according to claim 3, characterized in that, The adjusting component also includes locking pins, each of which is inserted through the base and one end of each locking pin extends into the through groove, and each locking pin is engaged with each of the screw tubes in a corresponding manner.

5. The chuck according to claim 4, characterized in that, The spiral tube has a slot, and the insert rod has a locking strip that engages with the slot.

6. The chuck according to claim 5, characterized in that, The adjusting component also includes an end block and a return spring. The end block is disposed on the end of the insert rod away from the toothed block, and the return spring is disposed on the insert rod. The two ends of the return spring abut against the end block and the solenoid, respectively. The return spring is used to push the insert rod to slide, so that the toothed block and the rotating ring remain engaged.

7. The chuck according to claim 6, characterized in that, The clamping assembly further includes several side top members, each of which is disposed on the base and is distributed at equal angles along the circumference of the base. Each side top member is engaged with each of the adjusting members in a corresponding manner.

8. The chuck according to claim 7, characterized in that, The side top component includes a carrier plate, a top plate, and a push spring. The carrier plate is disposed on the base, and the top plate is slidably disposed on the carrier plate. The push spring pushes the top plate, causing the top plate to engage with the insertion rod, thereby keeping the toothed block engaged with or disengaged from the rotating ring.

9. The chuck according to claim 8, characterized in that, The claw block has a stepped portion, which gradually rises towards the axis of the base.

10. The chuck according to claim 9, characterized in that, The claw block has several anti-slip grooves.

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