Machine tool chuck positioning device

Abstract

The utility model discloses a machine tool chuck positioning device, which relates to the field of machine tool chucks, and comprises a chuck body, the side wall of one side of the chuck body is provided with a wrench adjusting square hole, three movable sliding blocks are movably installed on the chuck body along the circumference at equal intervals, and movable clamping jaws are movably installed on the surfaces of the movable sliding blocks. A limiting assembly used for rapidly disassembling and assembling the movable sliding block is arranged between one side of the movable clamping jaw and one side of the movable sliding block. Through the arrangement of the movable sliding block, the movable clamping jaw, the limiting assembly and the like, the clamping jaw on the machine tool chuck can be rapidly disassembled and assembled conveniently, compared with an existing clamping jaw which is fixed through two bolts, the clamping jaw tool replacement time is further shortened, the working efficiency is improved, and through the cooperation of the I-shaped block and the I-shaped groove, the clamping jaw tool replacement efficiency is improved. And when the movable clamping jaw is mounted on the surface of the movable sliding block, the mounting stability of the movable clamping jaw can be improved, the movable clamping jaw can be quickly positioned conveniently, and the problem that the movable clamping jaw is prone to slipping due to repeated mounting through bolts is solved.

Description

Technical Field

[0001] The utility model relates to the field of machine tool chucks, in particular to a positioning device for a machine tool chuck. Background Technique

[0002] A chuck is a mechanical device on a machine tool used to clamp workpieces. It is a machine tool accessory that clamps and positions workpieces by the radial movement of movable jaws evenly distributed on the chuck body.

[0003] The movable jaws on the existing machine tool chucks are generally fixedly installed on the chuck by two inner hexagon screws. When replacing the movable jaws that match the shape of the clamped workpiece, the two screws on the jaws are removed using an inner hexagon wrench, and then the movable jaws are replaced.

[0004] However, the existing movable jaws use inner hexagon screws for disassembly and assembly. During long-term repeated replacement of the jaws, the threaded holes are easily damaged, which affects the normal assembly of the jaws. Moreover, the installation of the movable jaws using inner hexagon screws consumes a lot of time in the tooling replacement process, greatly reducing the utilization rate and processing efficiency of the machine tool and lowering the work efficiency. Content of the Utility Model

[0005] Based on this, the purpose of the utility model is to provide a positioning device for a machine tool chuck to solve the technical problems mentioned in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: It includes a chuck body. One side wall of the chuck body has a wrench adjustment square hole. Three moving sliders are movably installed on the chuck body at equal intervals along the circumference, and a movable jaw is movably installed on the surface of the moving slider. A limiting component for quickly disassembling and assembling the moving slider is arranged between one side of the movable jaw and one side of the moving slider.

[0007] By adopting the above technical solution, through the setting of the limiting component, it is convenient for the quick disassembly and assembly of the jaws on the machine tool chuck. Compared with the existing jaws fixed by two bolts, the time for replacing the jaw tooling is further shortened, thereby improving the work efficiency. Moreover, through the cooperation of the I-shaped block and the I-shaped groove, when the movable jaw is installed on the surface of the moving slider, the installation stability of the movable jaw can be improved, which is convenient for the quick positioning of the movable jaw.

[0008] The utility model is further set as follows: An I-shaped groove is formed on the surface of the moving slider, an I-shaped block is fixedly installed on the surface of the movable jaw, and the surface of the movable jaw is slidably installed inside the I-shaped groove on the surface of the moving slider through the I-shaped block.

[0009] By adopting the above technical solution, through the cooperation of the I-shaped block and the I-shaped groove, when the movable claw is installed on the surface of the movable slider, the installation stability of the movable claw can be improved, facilitating the rapid positioning of the movable claw.

[0010] The utility model is further arranged such that the limiting component includes: a limiting groove and a connecting plate. The limiting groove is opened on one side of the movable claw. The connecting plate is fixedly installed on the outer wall of one side of the movable slider. A positioning block is fixedly connected to the surface of the connecting plate, and a limiting pin movably penetrates through the middle of the positioning block. One end of the limiting pin extends into the limiting groove. A fixing ring is fixedly connected to the middle of the limiting pin, and one side of the fixing ring is placed on the surface of the movable claw. A return spring is sleeved on the middle of the limiting pin, and one end of the return spring is fixedly connected to the other side of the fixing ring. The other end of the return spring is fixedly connected to the surface of the positioning block. A locking component for limiting the other end of the limiting pin is arranged on one side of the surface of the connecting plate.

[0011] By adopting the above technical solution, during the installation of the movable claw, the movable claw is pushed into the I-shaped groove on the surface of the movable slider through the I-shaped block on its surface. At this time, the inclined surface at one end of the movable claw presses the inclined surface at one end of the corresponding limiting pin, causing one end of the limiting pin to automatically move away from the movable claw. After the movable claw is installed in place, the limiting pin is elastically reset by the return spring, causing the return spring to push the fixing ring in the middle of the limiting pin to move, so that one end of the limiting pin is inserted into the limiting groove on one side of the movable claw, completing the limitation of the movable claw, thereby realizing the rapid installation of the movable claw.

[0012] The utility model is further arranged such that one end of the limiting pin is provided with an inclined surface, and one end of the movable claw is provided with a conical surface that matches the inclined surface at one end of the limiting pin.

[0013] By adopting the above technical solution, during the installation of the movable claw into the I-shaped groove on the surface of the movable slider through the I-shaped block on its surface, during the pushing process of the movable claw, the inclined surface at one end of the movable claw presses the inclined surface at one end of the corresponding limiting pin, causing one end of the limiting pin to automatically move away from the movable claw. After the movable claw is installed in place, the limiting pin is elastically reset by the return spring, causing the return spring to push the fixing ring in the middle of the limiting pin to move, so that one end of the limiting pin is inserted into the limiting groove on one side of the movable claw, completing the limitation of the movable claw, thereby realizing the rapid installation of the movable claw.

[0014] The utility model is further arranged such that the locking component includes: a U-shaped block. The U-shaped block is fixedly installed on one side of the surface of the connecting plate. A rotating pin is rotatably installed at one end of the U-shaped block, and a limiting block is fixedly connected to the surface of the rotating pin. A groove is opened inside the other end of the U-shaped block, and a telescopic spring is fixedly installed inside the groove. One end of the telescopic spring is fixedly connected to one end of the limiting block.

[0015] By adopting the above technical solution, after one end of the limit pin is inserted into the limit groove on one side, at this time, one end of the limit block releases the extrusion of the other end of the limit pin. Under the elastic reset of the telescopic spring, one end of the push limit block deflects around the rotation pin. After one end of the limit block flips in place, the blocking block on one side of the other end of the limit block presses against the surface of one end of the U-shaped block, thereby restricting the rotation of the limit block, enabling one end of the limit block to limit the movement of the limit pin. At this time, one end of the limit block is located at the end of the other end of the limit pin, playing a role in limiting the movement of the limit pin, restricting one end of the limit pin from falling off the limit groove on one side of the movable claw, and improving the installation stability of the limit pin.

[0016] The present utility model is further arranged such that a blocking block is fixedly connected to the surface of the other end of the limit block, and one side of the blocking block is placed on the surface of one end of the U-shaped block.

[0017] By adopting the above technical solution, after the telescopic spring elastically resets and pushes the limit block to flip in place around the rotation pin, the blocking block on one side of the other end of the limit block presses against the surface of one end of the U-shaped block, thereby restricting the rotation of the limit block, enabling the other end of the limit block to limit the movement of the limit pin, avoiding the situation that the movable claw is only limited by the limit pin, and in the operation of the machine tool chuck, there may be a situation where the limit pin falls off the limit groove on one side of the movable claw, thereby playing a role in limiting the other end of the limit pin.

[0018] The present utility model is further arranged such that one side of the limit block is an inclined surface, and the inclined surface on one side of the limit block is matched with the other end of the limit pin.

[0019] By adopting the above technical solution, through the setting of the inclined surface on one side of the limit block, when the limit pin moves closer to the I-shaped block, the limit pin presses against the inclined surface on one side of the limit block, enabling one end of the limit block to flip towards the inside of the U-shaped block, thereby reducing the interference of the limit block on the movement of the limit pin.

[0020] The present utility model is further arranged such that a plurality of anti-slip grooves are equidistantly formed at the other end of the movable claw.

[0021] By adopting the above technical solution, through the setting of the anti-slip grooves, the clamping stability of the movable claw is improved when the movable claw clamps the workpiece.

[0022] In summary, the present utility model mainly has the following beneficial effects:

[0023] 1. By setting components such as a moving slider, a movable jaw, and a limiting component, the present utility model facilitates the quick disassembly and assembly of the jaws on a machine tool chuck. Compared with the existing jaws fixed by two bolts, the time for replacing the jaw tooling is further shortened, the work efficiency is improved, and through the cooperation of the I-shaped block and the I-shaped groove, when the movable jaw is installed on the surface of the moving slider, the installation stability of the movable jaw can be improved, facilitating the quick positioning of the movable jaw and avoiding problems such as thread stripping that are likely to occur when the movable jaw is repeatedly installed by bolts.

[0024] 2. By setting components such as a movable jaw, a limit pin, and a locking component, when the limit pin is installed in place to limit the movable jaw, one end of the limit block can limit the movement of the limit pin, avoiding the situation where the movable jaw is only limited by the limit pin and the limit pin may fall off from the limit groove on one side of the movable jaw during the operation of the machine tool chuck, thereby improving the installation stability of the limit pin. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a top view schematic diagram of the present utility model;

[0026] Figure 2 is a top view sectional schematic diagram of local structures such as the moving slider, the movable jaw, and the limiting component of the present utility model;

[0027] Figure 3 is of the present utility model Figure 2 magnified schematic diagram of structure A;

[0028] Figure 4 is a three-dimensional schematic diagram of local structures of the limit pin and the fixing ring of the present utility model.

[0029] In the figure: 1. Chuck body; 101. Wrench adjustment square hole; 2. Moving slider; 201. I-shaped groove; 3. Movable jaw; 301. I-shaped block; 4. Limiting component; 401. Limit groove; 402. Connecting plate; 403. Positioning block; 404. Limit pin; 405. Fixing ring; 406. Return spring; 5. Locking component; 501. U-shaped block; 502. Rotating pin; 503. Limit block; 504. Groove; 505. Telescopic spring; 506. Stopper. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present utility model and should not be construed as limiting the present utility model.

[0031] Next, the embodiments of the present utility model will be described according to the overall structure of the present utility model.

[0032] A machine tool chuck positioning device, as shown in Figure 1 - Figure 4 shown, includes a chuck body 1. One side wall of the chuck body 1 has a wrench adjustment square hole 101. Three moving sliders 2 are movably installed on the chuck body 1 at equal intervals along the circumference. An active jaw 3 is movably installed on the surface of the moving slider 2. A limiting component 4 for quickly disassembling and assembling the moving slider 2 is arranged between one side of the active jaw 3 and one side of the moving slider 2. Through the setting of the limiting component 4, it is convenient for the quick disassembly and assembly of the jaws on the machine tool chuck. Compared with the existing jaws fixed by two bolts, the time for replacing the jaw tooling is further shortened, thereby improving work efficiency. And through the cooperation of the I-shaped block 301 and the I-shaped groove 201, when the active jaw 3 is installed on the surface of the moving slider 2, the installation stability of the active jaw 3 can be improved, which is convenient for the quick positioning of the active jaw 3 and avoids problems such as thread slipping that are likely to occur when the active jaw is repeatedly installed by bolts.

[0033] Please refer to Figure 2 , a working groove 201 is formed on the surface of the moving slider 2, and an I-shaped block 301 is fixedly installed on the surface of the active jaw 3. The surface of the active jaw 3 is slidably installed inside the I-shaped groove 201 on the surface of the moving slider 2 through the I-shaped block 301. Through the cooperation of the I-shaped block 301 and the I-shaped groove 201, when the active jaw 3 is installed on the surface of the moving slider 2, the installation stability of the active jaw 3 can be improved, which is convenient for the quick positioning of the active jaw 3.

[0034] Please refer to Figure 1 - Figure 3, the limiting component 4 includes: a limiting groove 401 and a connecting plate 402. The limiting groove 401 is opened on one side of the movable claw 3. The connecting plate 402 is fixedly installed on the outer wall of one side of the moving slider 2. A positioning block 403 is fixedly connected to the surface of the connecting plate 402, and a limiting pin 404 movably penetrates through the middle of the positioning block 403. One end of the limiting pin 404 extends into the limiting groove 401. A fixing ring 405 is fixedly connected to the middle of the limiting pin 404, and one side of the fixing ring 405 is placed on the surface of the movable claw 3. A return spring 406 is sleeved on the middle of the limiting pin 404, and one end of the return spring 406 is fixedly connected to the other side of the fixing ring 405. The other end of the return spring 406 is fixedly connected to the surface of the positioning block 403. A locking component 5 for limiting the other end of the limiting pin 404 is arranged on one side of the surface of the connecting plate 402. During the installation of the movable claw 3, the movable claw 3 is pushed into the I-shaped groove 201 on the surface of the moving slider 2 through the I-shaped block 301 on its surface. At this time, the inclined surface at one end of the movable claw 3 presses the inclined surface at one end of the corresponding limiting pin 404, causing one end of the limiting pin 404 to automatically move away from the movable claw 3. After the movable claw 3 is installed in place, the limiting pin 404 is elastically reset by the return spring 406, causing the return spring 406 to push the fixing ring 405 in the middle of the limiting pin 404 to move, so that one end of the limiting pin 404 is inserted into the limiting groove 401 on one side of the movable claw 3, completing the limitation of the movable claw 3, and thus realizing the rapid installation of the movable claw 3.

[0035] Please refer to Figure 1 - Figure 4 , one end of the limiting pin 404 is provided with an inclined surface, and one end of the movable claw 3 is provided with a conical surface that matches the inclined surface at one end of the limiting pin 404. During the installation of the movable claw 3 into the I-shaped groove 201 on the surface of the moving slider 2 through the I-shaped block 301 on its surface, during the pushing process of the movable claw 3, the inclined surface at one end of the movable claw 3 presses the inclined surface at one end of the corresponding limiting pin 404, causing one end of the limiting pin 404 to automatically move away from the movable claw 3. After the movable claw 3 is installed in place, the limiting pin 404 is elastically reset by the return spring 406, causing the return spring 406 to push the fixing ring 405 in the middle of the limiting pin 404 to move, so that one end of the limiting pin 404 is inserted into the limiting groove 401 on one side of the movable claw 3, completing the limitation of the movable claw 3, and thus realizing the rapid installation of the movable claw 3.

[0036] Please refer to Figure 1 - Figure 3, the locking component 5 includes: a U-shaped block 501, which is fixedly installed on one side of the surface of the connecting plate 402. A rotating pin 502 is rotatably installed at one end of the U-shaped block 501, and a limiting block 503 is fixedly connected to the surface of the rotating pin 502. A groove 504 is formed inside the other end of the U-shaped block 501, and a telescopic spring 505 is fixedly installed inside the groove 504. One end of the telescopic spring 505 is fixedly connected to one end of the limiting block 503. When one end of the limiting pin 404 is inserted into the limiting groove 401 on one side, at this time, one end of the limiting block 503 releases the extrusion of the other end of the limiting pin 404. Under the elastic reset of the telescopic spring 505, one end of the pushing limiting block 503 deflects around the rotating pin 502. After one end of the limiting block 503 flips in place, one side of the stop block 506 at the other end of the limiting block 503 presses against the surface of one end of the U-shaped block 501, thereby restricting the rotation of the limiting block 503, enabling one end of the limiting block 503 to limit the movement of the limiting pin 404. At this time, one end of the limiting block 503 is located at the end of the other end of the limiting pin 404, playing a role in limiting the movement of the limiting pin 404, restricting one end of the limiting pin 404 from falling off from the limiting groove 401 on one side of the movable claw 3, and improving the installation stability of the limiting pin 404.

[0037] Please refer to Figure 2 - Figure 3 , a stop block 506 is fixedly connected to the surface of the other end of the limiting block 503, and one side of the stop block 506 is placed on the surface of one end of the U-shaped block 501. After the telescopic spring 505 elastically resets and pushes the limiting block 503 to flip in place around the rotating pin 502, one side of the stop block 506 at the other end of the limiting block 503 presses against the surface of one end of the U-shaped block 501, thereby restricting the rotation of the limiting block 503, enabling one end of the limiting block 503 to limit the movement of the limiting pin 404, avoiding the movable claw 3 being limited only by the limiting pin 404. During the operation of the machine tool chuck, there may be a situation where the limiting pin 404 falls off from the limiting groove 401 on one side of the movable claw 3, thereby playing a role in limiting the other end of the limiting pin 404.

[0038] Please refer to Figure 2 - Figure 3 , one side of the limiting block 503 is set as an inclined surface, and the inclined surface on one side of the limiting block 503 cooperates with the other end of the limiting pin 404. Through the setting of the inclined surface on one side of the limiting block 503, when the limiting pin 404 moves closer to the I-shaped block 301, the limiting pin 404 presses against the inclined surface on one side of the limiting block 503, enabling one end of the limiting block 503 to flip towards the inside of the U-shaped block 501, thereby reducing the interference caused by the limiting block 503 to the movement of the limiting pin 404.

[0039] Please refer to Figure 1, a plurality of anti-slip grooves are equidistantly arranged at the other end of the movable jaw 3. Through the arrangement of the anti-slip grooves, the clamping stability of the movable jaw 3 is improved when the movable jaw 3 clamps the workpiece.

[0040] The working principle of the present utility model is as follows: During the installation of the movable jaw 3, the movable jaw 3 is pushed into the inside of the I-shaped groove 201 on the surface of the moving slider 2 through the I-shaped block 301 on its surface. At this time, the inclined surface at one end of the movable jaw 3 squeezes the inclined surface at one end of the corresponding limit pin 404, causing one end of the limit pin 404 to automatically move away from the movable jaw 3. After the movable jaw 3 is installed in place, the limit pin 404 is elastically reset by the return spring 406, so that the return spring 406 pushes the fixed ring 405 in the middle of the limit pin 404 to move, and one end of the limit pin 404 is inserted into the limit groove 401 on one side of the movable jaw 3 to complete the limitation of the movable jaw 3. And during the movement of the limit pin 404 into the limit groove 401, the other end of the limit pin 404 presses on the inclined surface on one side of the limit block 503, causing one end of the limit block 503 to deflect towards the inside of the U-shaped block 501. When one end of the limit pin 404 is inserted into the limit groove 401 on one side, at this time, one end of the limit block 503 releases the extrusion of the other end of the limit pin 404. Under the elastic reset of the telescopic spring 505, one end of the push limit block 503 deflects around the rotation pin 502. After one end of the limit block 503 flips in place, the stopper 506 on the other end of the limit block 503 presses on the surface of one end of the U-shaped block 501, thereby restricting the rotation of the limit block 503. At this time, one end of the limit block 503 is located at the end of the other end of the limit pin 404, playing a role in limiting the movement of the limit pin 404.

[0041] Although the embodiments of the present utility model have been shown and described, the specific embodiments are only explanations of the present utility model and are not limitations thereof. The specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art can make modifications, substitutions and variations without creative contributions to the embodiments according to needs, but as long as they are within the scope of the claims of the present utility model, they are protected by the patent law.

Claims

1. A machine tool chuck positioning device, comprising a chuck body (1), characterized in that: A side wall of one side of the chuck body (1) has a wrench adjustment square hole (101), three movable sliders (2) are movably mounted at equal intervals along the circumference of the chuck body (1), and a movable clamping claw (3) is movably mounted on the surface of the movable slider (2), and a limit assembly (4) for quickly disassembling and assembling the movable slider (2) is arranged between one side of the movable clamping claw (3) and one side of the movable slider (2).

2. A machine tool chuck positioning device according to claim 1, characterized in that: The surface of the movable slider (2) is provided with an I-shaped groove (201), the surface of the movable claw (3) is fixedly mounted with an I-shaped block (301), and the surface of the movable claw (3) is slidably mounted inside the I-shaped groove (201) on the surface of the movable slider (2) via the I-shaped block (301).

3. A machine tool chuck positioning device according to claim 1, characterized in that: The limiting assembly (4) comprises: a limiting groove (401) and a connecting plate (402), wherein the limiting groove (401) is provided on one side of the movable claw (3), and the connecting plate (402) is fixedly mounted on the outer wall of one side of the movable slider (2), and a positioning block (403) is fixedly connected to the surface of the connecting plate (402), and the middle part of the positioning block (403) movably penetrates a limiting pin (404), and one end of the limiting pin (404) extends to the inside of the limiting groove (401), and the middle part of the limiting pin (404) is fixedly connected to the movable claw (3). A fixing ring (405) is fixedly connected to the part, and one side of the fixing ring (405) is placed on the surface of the movable claw (3); a return spring (406) is sleeved on the middle part of the limit pin (404), and one end of the return spring (406) is fixedly connected to the other side of the fixing ring (405), and the other end of the return spring (406) is fixedly connected to the surface of the positioning block (403); and a locking component (5) for limiting the other end of the limit pin (404) is provided on one side of the surface of the connecting plate (402).

4. A machine tool chuck positioning device according to claim 3, characterized in that: One end of the limiting pin (404) is configured as an inclined surface, and one end of the movable claw (3) is configured as a conical surface that matches the inclined surface at one end of the limiting pin (404).

5. A machine tool chuck positioning device according to claim 3, characterized in that: The locking assembly (5) comprises: a U-shaped block (501), the U-shaped block (501) being fixedly mounted on one side of the surface of the connecting plate (402), a rotating pin (502) being rotatably mounted on one end of the U-shaped block (501), and a limit block (503) being fixedly connected to the surface of the rotating pin (502), a groove (504) being provided inside the other end of the U-shaped block (501), and a telescopic spring (505) being fixedly mounted inside the groove (504), and one end of the telescopic spring (505) being fixedly connected to one end of the limit block (503).

6. A machine tool chuck positioning device according to claim 5, characterized in that: A stopper (506) is fixedly connected to the surface of the other end of the limit block (503), and one side of the stopper (506) is mounted on the surface of one end of the U-shaped block (501).

7. A machine tool chuck positioning device according to claim 5, characterized in that: One side of the limit block (503) is configured as an inclined surface, and the inclined surface on one side of the limit block (503) matches the other end of the limit pin (404).

8. A machine tool chuck positioning device according to claim 1, characterized in that: The other end of the movable claw (3) is provided with a plurality of anti-slip grooves at equal distances.

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