A machine tool chuck jaw mounting chuck

Abstract

The utility model relates to installation chuck technical field especially relates to a machine tool clamping jaw installation chuck, including chuck body, the back surface coaxial fixed mounting of chuck body has drive key, the front of chuck body is equipped with the clamping mechanism for fixing work piece, and the counterweight adjusting mechanism is provided on the chuck body, and the clamping mechanism includes the clamping sliding slot of setting up in the front of chuck body, and the bottom wall of clamping sliding slot is equipped with the installation recess groove, and the inside movable mounting of installation recess groove has screw rod drive part. The utility model discloses through setting up counterweight adjusting mechanism, when the vibration of chuck is over limit when irregular work piece leads to the low -speed trial operation, operating personnel can place the magnetic counterweight piece conveniently on the different circumferential position of magnetic attraction ring groove according to the alarm prompt, can accurate compensation the centrifugal force produced by work piece asymmetry and clamping jaw asynchronous movement, effectively solved the dynamic balance problem that the quality distribution is uneven when clamping special-shaped work piece.

Description

Technical Field

[0001] This utility model relates to the field of chuck mounting technology, and in particular to a machine tool gripper mounting chuck. Background Technology

[0002] CNC machine tools are the core equipment of modern manufacturing. They use chucks to hold workpieces or cutting tools for high-speed, high-precision cutting. When holding symmetrical workpieces, these chucks have a uniform mass distribution and can maintain good dynamic balance under high-speed rotation, ensuring machining accuracy and equipment safety. However, when faced with irregularly shaped or asymmetrical workpieces, the overall mass center of the chuck system will deviate from the axis of rotation. During high-speed rotation, huge centrifugal forces will be generated, causing the machine tool to vibrate violently.

[0003] Existing technologies typically involve equipping machine tools with high-precision dynamic balancing instruments to compensate for vibrations by monitoring them online and adding balancing rings to the spindle. However, this system is costly, and the adjustment range and accuracy of the balancing rings are limited. In particular, it often responds slowly to severe imbalances caused by irregular workpieces, making it difficult to effectively suppress them. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a machine tool gripper mounting chuck, which solves the technical problem that existing chucks cause the center of gravity to deviate from the axis of rotation when clamping irregular workpieces, resulting in vibration of the machining distance. It has the advantage of being able to suppress severe vibration of the chuck at extremely low cost.

[0005] To solve the above technical problems, this utility model provides the following technical solution: a machine tool chuck, including a chuck body, a drive key coaxially fixedly mounted on the back of the chuck body, a clamping mechanism for fixing workpieces provided on the front of the chuck body, a counterweight adjustment mechanism provided on the chuck body, and the chuck body being connected to the machine tool spindle via the drive key, thereby enabling the chuck body to rotate at high speed. The clamping mechanism includes a clamping groove formed on the front of the chuck body, an installation groove formed on the bottom wall of the clamping groove, a screw drive component movably mounted inside the installation groove, a quick-connect assembly provided outside the screw drive component, and a clamping jaw detachably mounted on the quick-connect assembly. When the screw drive component rotates around its own axis, the quick-connect assembly and the clamping jaw move horizontally along the clamping groove.

[0006] Preferably, the counterweight adjustment mechanism includes a magnetic ring groove formed on the upper end of the chuck body, and a magnetic counterweight is provided inside the magnetic ring groove. When the magnetic counterweight is placed in different positions inside the magnetic ring groove, it can compensate for the weight imbalance caused by the installation of irregular workpieces.

[0007] Preferably, the chuck body is provided with a coaxial clearance groove, which can limit and clamp the cylindrical object.

[0008] Preferably, the quick-connect assembly includes a movable protrusion threadedly connected to the screw drive component, and a limit connector is fixedly installed on the movable protrusion. The clamping claw can be quickly connected to the limit connector, thereby facilitating replacement.

[0009] Preferably, the magnetic counterweight is provided with a fixed handle, which allows the operator to remove the magnetic counterweight from the inside of the magnetic ring groove.

[0010] Preferably, an electromagnet is provided inside the side wall of the magnetic ring groove. When the electromagnet is energized, the magnetic ring groove can magnetically attract and fix the magnetic counterweight.

[0011] By employing the above technical solution, this utility model provides a machine tool gripper mounting chuck, which has at least the following beneficial effects:

[0012] 1. By setting up a counterweight adjustment mechanism, when the chuck vibrates beyond the limit during low-speed test operation due to the clamping of irregular workpieces, the operator can conveniently place the magnetic counterweight at different circumferential positions of the magnetic suction ring groove according to the alarm prompt. This can accurately compensate for the centrifugal force generated by the asymmetry of the workpiece and the asynchronous movement of the gripper, effectively solving the dynamic balance problem caused by uneven mass distribution when clamping irregular workpieces.

[0013] 2. By setting up a clamping mechanism and utilizing the coordinated design of the quick-connect component and the screw drive component, the three clamping jaws can move independently or synchronously along the clamping groove. This not only accurately clamps regular workpieces but also flexibly adapts to the complex contours of irregular workpieces. It has strong versatility and perfectly balances the dual needs of reliable clamping of general workpieces and quick replacement of special jaws. Attached Figure Description

[0014] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0015] Figure 1 This is a perspective view of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the counterweight adjustment mechanism in this utility model;

[0017] Figure 3 This is a schematic diagram of the clamping mechanism in this utility model;

[0018] Figure 4 This is a schematic diagram of the screw drive component in this utility model.

[0019] In the diagram: 1. Chuck body; 2. Drive key; 3. Clamping mechanism; 301. Clamping groove; 302. Mounting groove; 303. Screw drive component; 304. Quick-connect assembly; 305. Clamping jaws; 306. Clearance groove; 4. Counterweight adjustment mechanism; 401. Magnetic ring groove; 402. Magnetic counterweight block; 403. Fixed grip. Detailed Implementation

[0020] 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.

[0021] Example 1

[0022] Existing technologies typically involve equipping machine tools with high-precision dynamic balancing instruments, monitoring vibrations online, and adding balancing rings to the spindle for compensation. However, this system is costly, and the adjustment range and accuracy of the balancing rings are limited. Especially for severe imbalances caused by irregular workpieces, the response is often delayed, making it difficult to effectively suppress the imbalance. To address this technical deficiency in existing technologies, such as... Figures 1-4 As shown, this embodiment proposes a machine tool chuck for mounting jaws, which can accurately compensate for the centrifugal force generated by workpiece asymmetry and asynchronous jaw movement. The chuck includes a chuck body 1, a drive key 2 coaxially fixedly mounted on the back of the chuck body 1, a clamping mechanism 3 for fixing the workpiece on the front of the chuck body 1, and a counterweight adjustment mechanism 4 on the chuck body 1. The chuck body 1 is connected to the machine tool spindle via the drive key 2, thereby enabling the chuck body 1 to rotate at high speed. The clamping mechanism 3 includes a clamping groove 301 formed on the front of the chuck body 1, and a mounting groove 302 formed on the bottom wall of the clamping groove 301. The interior of the mounting groove 302... The chuck body 1 is equipped with a screw drive 303, and a quick-connect assembly 304 is provided on the outside of the screw drive 303. The quick-connect assembly 304 includes a movable protrusion that is threadedly connected to the screw drive 303. A limit connector is fixedly installed on the movable protrusion. A clamping jaw 305 is detachably installed on the quick-connect assembly 304. The clamping jaw 305 can be quickly connected to the limit connector to facilitate replacement. When the screw drive 303 rotates around its own axis, the quick-connect assembly 304 and the clamping jaw 305 will move horizontally along the clamping groove 301. A clearance groove 306 is coaxially provided on the chuck body 1, which can limit and clamp cylindrical objects.

[0023] Specifically, the counterweight adjustment mechanism 4 includes a magnetic ring groove 401 located on the upper end of the chuck body 1. An electromagnet is installed inside the side wall of the magnetic ring groove 401. When the electromagnet is energized, the magnetic ring groove 401 can magnetically attract and fix the magnetic counterweight 402. The magnetic counterweight 402 is installed inside the magnetic ring groove 401. When the magnetic counterweight 402 is placed in different positions inside the magnetic ring groove 401, it can compensate for the weight imbalance caused by the installation of irregular workpieces. A fixed handle 403 is provided on the magnetic counterweight 402, and the operator can use the fixed handle 403 to remove the magnetic counterweight 402 from inside the magnetic ring groove 401.

[0024] As can be seen from the above, when a workpiece is processed by a machine tool, the chuck body 1 is connected to the machine tool spindle via the drive key 2.

[0025] When placing a workpiece, if it is a regular disc-shaped or cylindrical workpiece, the operator will place the workpiece between three clamping jaws 305. Then, the three sets of clamping jaws 305 will move closer to each other synchronously under the action of the screw drive 303, thereby clamping and fixing the workpiece. Subsequently, the chuck body 1 will rotate under the action of the machine tool spindle, thereby completing the processing of the workpiece. At this time, there is no need to place the magnetic counterweight 402.

[0026] If it is necessary to clamp irregularly shaped workpieces, after the operator places the workpiece between the three clamping jaws 305, one or two clamping jaws 305 will gradually move closer to the workpiece and make contact with it. Next, the remaining clamping jaws 305 will move closer to the workpiece and make contact with it. After the three clamping jaws 305 have made contact with the irregular surface of the workpiece, the clamping jaws 305 will make a final clamping. At this time, the moving distance of the three clamping jaws 305 may be different.

[0027] Next, the machine tool spindle will drive the chuck body 1 to rotate at a low speed. During the rotation, the vibration sensor installed inside the chuck body 1 will monitor the vibration in real time. When the vibration frequency or amplitude exceeds the threshold, the machine tool will automatically issue an alarm signal. Subsequently, the operator will place the magnetic counterweight 402 inside the magnetic ring groove 401 to adjust the overall counterweight of the chuck body 1 and ensure the stability of the chuck body 1 when rotating at high speed.

[0028] In this embodiment, by setting a counterweight adjustment mechanism 4, when the chuck vibrates beyond the limit during low-speed trial operation due to the clamping of irregular workpieces, the operator can conveniently place the magnetic counterweight 402 at different circumferential positions on the magnetic ring groove 401 according to the alarm prompt. This can accurately compensate for the centrifugal force generated by the asymmetry of the workpiece and the asynchronous movement of the grippers, effectively solving the dynamic balance problem caused by uneven mass distribution when clamping irregular workpieces. Moreover, by setting a clamping mechanism 3, this embodiment utilizes the coordinated design of the quick-connect component 304 and the screw drive component 303, allowing the three clamping jaws 305 to move independently or synchronously along the clamping slide 301. This can accurately clamp regular workpieces and flexibly adapt to the complex contours of irregular workpieces, making it highly versatile and perfectly balancing the dual needs of reliable clamping of general workpieces and quick replacement of special jaws.

[0029] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.

[0030] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A machine tool clamping jaw mounting chuck, comprising a chuck body (1), a driving key (2) is coaxially fixedly mounted on the back surface of the chuck body (1), characterized in that: The front of the chuck body (1) is provided with a clamping mechanism (3) for fixing the workpiece, and the chuck body (1) is provided with a counterweight adjustment mechanism (4). The clamping mechanism (3) includes a clamping groove (301) on the front of the chuck body (1), and an installation groove (302) is provided on the bottom wall of the clamping groove (301). A screw drive (303) is movably installed inside the installation groove (302), and a quick-connect assembly (304) is provided outside the screw drive (303). A clamping claw (305) is detachably installed on the quick-connect assembly (304).

2. The machine tool gripper mounting chuck according to claim 1, characterized in that: The counterweight adjustment mechanism (4) includes a magnetic ring groove (401) opened on the upper end of the chuck body (1), and a magnetic counterweight block (402) is provided inside the magnetic ring groove (401).

3. The machine tool gripper mounting chuck according to claim 1, characterized in that: The chuck body (1) is provided with a clearance groove (306) on the same axis.

4. A machine tool gripper mounting chuck according to claim 1, characterized in that: The quick-connect assembly (304) includes a movable protrusion threadedly connected to the screw drive (303), and a limit connector is fixedly installed on the movable protrusion.

5. A machine tool gripper mounting chuck according to claim 2, characterized in that: A fixed handle (403) is provided on the magnetic counterweight (402).

6. A machine tool gripper mounting chuck according to claim 2, characterized in that: An electromagnet is provided inside the side wall of the magnetic ring groove (401).

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