Three-jaw chuck applied to laser welding of optical fiber sensitive ring module

Abstract

The utility model provides a three-jaw chuck applied to laser welding of an optical fiber sensitive ring module, which comprises a chuck main body, and at least three electric jaws are arranged on the upper surface of the chuck main body in a sliding manner; all the electric claws are annularly arranged at equal intervals one by one; each electric claw is provided with a limiting groove; each electric claw is provided with a clamping mechanism main body which is inserted into the corresponding limiting groove in a matched mode, a mounting groove is formed in the upper surface of each clamping mechanism main body, an annular cover is fixedly mounted at a groove opening of each mounting groove, an adjusting screw rod is arranged in each mounting groove, the threaded end of each adjusting screw rod partially penetrates through the corresponding annular cover, and a spring is arranged on each adjusting screw rod in a surrounding mode; one end of the spring is connected to the nut end of the adjusting screw, the other end of the spring is connected to the ring cover, and the threaded end of the adjusting screw is in threaded connection with a fixing block. The method has the effect of improving the welding stability so as to improve the welding qualification rate.

Description

Technical Field

[0001] The utility model relates to the field of laser welding technology, in particular to a three-jaw chuck used for laser welding of optical fiber sensitive ring modules. Background Art

[0002] The fiber optic sensitive ring is the most important angular velocity sensor in a fiber optic gyroscope. Its basic structure typically consists of a loop-shaped fiber coil and a high-thermal conductivity frame. As gyroscope precision requirements increase, the fiber optic sensitive ring's environmental requirements for temperature, electromagnetic field, humidity, and other factors become increasingly stringent. Therefore, the packaging and protection measures for the fiber optic sensitive ring must meet even higher standards. The fiber optic sensitive ring is encapsulated and protected by a removable, interlocking ring support and cover assembly. The main body of the ring support is secured to the bottom of the ring support with adhesive, while the pigtail is positioned outside the ring support through a slotted design. Finally, the ring support cover is attached and laser welded to complete the package. The quality of laser welding not only affects the package's robustness but also significantly impacts the magnetic shielding performance and thermal conductivity of the entire package housing. Therefore, a chuck and fixing mechanism are required during laser welding to secure the weldment and minimize the effects of other variables during the welding process.

[0003] In the related art, the chuck and the fixing mechanism are designed independently. The former clamps the weldment horizontally through electric claws, and the latter clamps it vertically through an elastic mechanism. The two cooperate with each other to complete the fixation of the weldment.

[0004] With respect to the above technical solution, there is a defect that the chuck and the fixing mechanism do not fit tightly together, thereby reducing the welding qualification rate. Utility Model Content

[0005] The purpose of the utility model is to provide a three-jaw chuck used for laser welding of optical fiber sensitive ring modules, so as to solve the problem that the chuck and the fixing mechanism are not tightly matched, thereby reducing the welding qualification rate.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a three-jaw chuck for laser welding of optical fiber sensitive ring modules, which adopts the following technical solutions:

[0007] A three-jaw chuck used for laser welding of optical fiber sensitive ring modules, comprising a chuck body; at least three electric claws are slidingly arranged on the upper surface of the chuck body; all the electric claws are arranged in a ring array with equal intervals; each of the electric claws is provided with a limiting groove; each of the electric claws is provided with a clamping mechanism body that is inserted into the limiting groove; a mounting groove is provided on the upper surface of the clamping mechanism body; a ring cover is fixedly installed on the notch of the mounting groove; an adjusting screw is provided inside the mounting groove; the threaded end of the adjusting screw partially passes through the ring cover; a spring is arranged around the adjusting screw; the spring is provided inside the mounting groove; one end of the spring is connected to the nut end of the adjusting screw, and the other end is connected to the ring cover; the threaded end of the adjusting screw is threadedly connected to a fixing block.

[0008] Preferably, there are at least two limiting grooves, and the limiting grooves are arranged at equal intervals.

[0009] Preferably, the limiting groove is provided with a first special-shaped track; and a clamping block matching the first special-shaped track is provided on the outer peripheral side of the clamping mechanism body.

[0010] Preferably, the side wall of the first special-shaped track is provided with a first through hole; the clamping mechanism body is also provided with a first screw, and the clamping block is provided with a threaded hole, the first screw passes through the first through hole, and the end of the first screw is threadedly engaged with the threaded hole.

[0011] Preferably, each of the electric claws is detachably mounted with an accessory module on the side away from the center point of the chuck; the upper surface of the accessory module is provided with a connecting groove for use with the clamping mechanism body; the inner side surface of the connecting groove is provided with a second special-shaped track for use with the clamping block; the side wall of the second special-shaped track is provided with a second through hole for use with the first screw.

[0012] Preferably, the nut end of the adjusting screw is polygonal; the clamping mechanism body is provided with a circular hole; the clamping mechanism body is provided with a plug-in for use with the circular hole; the end of the plug-in is used to tighten the outer peripheral side of the nut end of the adjusting screw.

[0013] Preferably, the fixed block is detachably connected to at least one extension block, and the plurality of extension blocks are detachably connected one by one.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. The staff inserts and fixes the clamping mechanism body with the fixed block into the limit groove, then places the object to be welded on top of the chuck body, slides the three electric claws so that the outer peripheral side of the clamping mechanism body above the electric claws is pressed against the object to be welded, providing a horizontal clamping force for the object to be welded, reducing the possibility of the object to be welded shifting in the horizontal direction during the welding process, thereby improving the welding quality. At the same time, the staff pulls the fixed block, and the fixed block drives the adjusting screw to move upward, thereby adjusting the nut end of the screw and the ring cover to cooperate with the compression spring, and finally clamps the fixed block to the upper surface of the object to be welded, providing a vertical clamping force for the object to be welded, thereby further reducing the possibility of the object to be welded shifting in the vertical direction, improving the welding accuracy and thus improving the welding qualification rate.

[0015] 2. The accessory module is provided with a connection groove for use with the clamping mechanism body, which can effectively expand the clamping range of the clamping mechanism body and is suitable for large-sized objects to be welded. At the same time, the engagement of the second special-shaped rail with the clamping block can improve the stability of the clamping mechanism installation and the firmness of the clamping. The first screw is passed through the second through hole until the first screw is screwed into the threaded hole of the clamping block, which can further improve the firmness of the clamping.

[0016] 3. The setting of the extension block can effectively increase the clamping range of the fixed block, which is suitable for objects to be welded with a large horizontal cross-sectional area, thereby effectively improving the clamping stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0018] Figure 1 This is a schematic diagram of the overall structure of the three-jaw chuck in Example 1 of the present application;

[0019] Figure 2 This is an exploded schematic diagram of the clamping mechanism body of Example 1 of the present application;

[0020] Figure 3 This is an exploded schematic diagram of the accessory module of Example 1 of the present application.

[0021] Figure 4 This is a schematic diagram of the overall structure of the three-jaw chuck of Example 2 of the present application.

[0022] Explanation of reference signs: 1, chuck main body; 2, electric claw; 21, limiting groove; 211, first special-shaped track; 212, first through hole; 22, clamping mechanism main body; 221, mounting groove; 222, ring cover; 223, adjusting screw; 224, spring; 225, fixed block; 2251, extension block; 226, clamping block; 2261, threaded hole; 227, first screw; 228, round hole; 229, plug-in part; 23, accessory module; 231, connecting groove; 232, second special-shaped track; 233, second through hole. DETAILED DESCRIPTION

[0023] In order to make the technical scheme and advantages of the utility model clearer, the utility model and its beneficial effects will be further described in detail below in combination with specific embodiments and the drawings of the specification, but the embodiments of the utility model are not limited to this.

[0024] In the description of the utility model, unless explicitly defined and limited, the terms "mounting", "connecting", "connecting", "fixing" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0025] The standard parts used in the utility model can be purchased from the market, and the special-shaped parts can be ordered according to the description and the drawings, and the specific connection mode of each part adopts the conventional means such as bolt, rivet and welding in the prior art, and the mechanical parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection mode in the prior art, which will not be described in detail here.

[0026] The following will be described in detail with reference to the drawings Figure 1-4 The application will be further described in detail.

[0027] The embodiment of the application discloses a three-jaw chuck applied to laser welding of a fiber sensitive ring module.

[0028] Embodiment 1

[0029] Reference Figure 1The three-jaw chuck applied to the fiber sensitive ring module laser welding comprises a chuck body 1, the upper surface of the chuck body 1 is provided with three electric claws 2, the three electric claws 2 are arranged in a ring, the spacing between adjacent two electric claws 2 is the same, and the electric claws 2 are arranged in the diameter direction of the chuck body 1; the upper surface of each electric claw 2 is provided with a limiting groove 21 and a clamping mechanism body 22 matched with the limiting groove 21; in the embodiment of the application, three limiting grooves 21 are arranged on each electric claw 2, the limiting grooves 21 on each electric claw 2 are arranged at equal intervals, so that the staff can select a suitable limiting groove 21 to install the clamping mechanism body 22, so that the clamping mechanism body 22 can stably clamp the welding object of different sizes in the horizontal direction, improve the stability of clamping, and the clamping mechanism body 22 is adjustably connected with a fixing block 225, the fixing block 225 can be adjusted in height upward, the clamping mechanism body 22 and the fixing block 225 are used in cooperation to provide clamping force in the horizontal and vertical directions for the welding object, effectively improve the stability of clamping, and improve the qualified rate of welding.

[0030] Referring to Figure 1 , the fixing block 225 is detachably connected with at least one extension block 2251, and the plurality of extension blocks 2251 can be detachably connected in any pair. When at least two extension blocks 2251 need to be connected, the plurality of extension blocks 2251 are connected two by two and arranged in the length extension direction of the fixing block 225, so as to expand the force application area of the fixing block 225 relative to the surface of the welding piece. In the embodiment of the application, each fixing block 225 is connected with one extension block 2251, which can effectively improve the force application area of the fixing block 225, so as to be suitable for the welding object with a larger horizontal cross-sectional area.

[0031] Referring to Figure 1 and Figure 2 , the upper surface of the clamping mechanism body 22 is provided with a mounting groove 221, the mounting groove 221 is fixedly installed with a ring cover 222, and the inside of the mounting groove 221 is provided with an adjusting screw 223, the threaded end of the adjusting screw 223 locally penetrates through the ring cover 222, then the adjusting screw 223 is arranged in a ring, the spring 224 is arranged in the inside of the mounting groove 221, one end of the spring 224 is connected to the nut end of the adjusting screw 223, and the other end is connected to the ring cover 222, and the threaded end of the adjusting screw 223 is threadedly connected to the fixing block 225, that is, when the height of the fixing block 225 is adjusted, the staff moves the fixing block 225 upward, the fixing block 225 drives the adjusting screw 223 to move upward, so that the nut end of the adjusting screw 223 cooperates with the ring cover 222 to compress the spring 224, and the elastic force provided by the spring 224 can force the fixing block 225 to abut against the upper surface of the welding object, thereby improving the stability of clamping.

[0032] In the embodiment of the application, referring to Figure 2The nut end of the adjusting screw 223 is hexagonal, and the clamping mechanism body 22 is provided with a circular hole 228 and an insert 229 used in conjunction with the circular hole 228. When the fixing block 225 needs to be installed, the end of the insert 229 is inserted into the circular hole 228, and the end of the insert 229 is pressed against the nut end of the adjusting screw 223, temporarily limiting the adjusting screw 223 from rotating. At the same time, the end of the adjusting screw 223 is screwed into the fixing block 225 and tightened. The screwing depth is adjusted as needed to complete the installation of the clamping mechanism body 22 and the fixing block 225. Finally, the insert 229 is withdrawn to allow the adjusting screw 223 to resume rotation, so that the fixing block 225 can rotate in the clamping mechanism body 22. This not only facilitates the staff to quickly replace the fixing block 225 and improves work efficiency, but also allows the staff to adjust the clamping angle and clamping position height of the fixing block to the weldment as needed, thereby improving the stability of the clamping.

[0033] Reference Figure 1 and Figure 2 In the embodiment of the present application, a first special-shaped track 211, i.e., a Z-shaped track, is provided inside the limiting groove 21, and a clamping block 226 matching the Z-shaped track is provided on the outer peripheral side of the clamping mechanism main body 22. The mutual engagement of the clamping block 226 and the Z-shaped track can effectively improve the stability of the installation of the clamping mechanism main body 22; at the same time, a first through hole 212 is provided on the bottom side wall of the first special-shaped track 211, and the clamping mechanism main body 22 is provided with a first screw 227 matching the first through hole 212. The middle part of the first screw 227 is the optical axis, and the end of the first screw 227 is integrally formed with an external thread. A threaded hole 2261 is provided on the clamping block 226, and the first screw 227 passes through the first through hole 212. The end of the first screw 227 is threadedly connected to the threaded hole 2261, which can further improve the stability of the installation of the clamping mechanism main body 22, thereby improving the qualified rate of welding.

[0034] Reference Figure 3 , each electric claw 2 is detachably installed with an accessory module 23 on the side away from the center point of the chuck, and a connecting groove 231 is provided on the upper surface of the accessory module 23 for use with the clamping mechanism main body 22. The setting of the connecting groove 231 can effectively increase the clamping range, and the inner side of the connecting groove 231 is provided with a second special-shaped track 232, namely a Z-shaped track, for use with the clamping block 226. The threaded side wall at the bottom of the second special-shaped track 232 is provided with a second through hole 233 for use with the first screw 227. Through the engagement of the clamping block 226 with the second special-shaped track 232 and the end of the first screw 227 passing through the second through hole 233 and being threadedly connected with the clamping block 226, the stability of the clamping mechanism main body 22 installed in the connecting groove 231 can be effectively improved, thereby improving the qualified rate of welding.

[0035] The implementation principle of a three-jaw chuck used for laser welding of optical fiber sensitive ring modules in an embodiment of the present application is as follows: the staff places the object to be welded at the target position, and then controls the moving electric claw 2 and pulls the fixed blocks 225 on all the clamping mechanism bodies 22 to clamp the object to be welded, and at the same time adjusts the angle of the extension block 2251 to clamp the object to be welded, that is, clamps the object to be welded in the horizontal and vertical directions, effectively enhancing the stability of the clamping, thereby improving the stability and pass rate of welding.

[0036] Example 2

[0037] Based on Example 1, the main difference between the embodiment of the present application and Example 1 is that the shape of the fixing block 225 is different, as follows:

[0038] The fixing block 225 is a length-limiting fixing block 225 , and the upper end of the fixing block 225 is a rectangular parallelepiped, which can be suitable for smaller objects to be welded, providing a more stable holding force, saving time and effort, and improving work efficiency.

[0039] The implementation principle of a three-jaw chuck used for laser welding of optical fiber sensitive ring modules in an embodiment of the present application is as follows: the staff places the object to be welded at the target position, and then controls the moving electric claw 2 and pulls the fixed blocks 225 on all the clamping mechanism bodies 22 to clamp the object to be welded, and at the same time adjusts the angle of the fixed block 225 to clamp the object to be welded, that is, clamps the object to be welded in the horizontal and vertical directions, effectively enhancing the stability of the clamping, thereby improving the stability and pass rate of the welding.

[0040] Based on the disclosure and teachings of the above description, those skilled in the art will be able to make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments described above. Any obvious improvements, substitutions, or modifications made by those skilled in the art based on the present invention fall within the scope of protection of the present invention. In addition, although certain specific terms are used in this description, these terms are for convenience only and do not constitute any limitation on the present invention.

Claims

1. A three-jaw chuck for laser welding of optical fiber sensitive ring modules, characterized by: The invention comprises a chuck body (1); at least three electric claws (2) are slidingly arranged on the upper surface of the chuck body (1); all the electric claws (2) are arranged in a ring array at equal intervals; each electric claw (2) is provided with a limiting groove (21); each electric claw (2) is provided with a clamping mechanism body (22) that is plugged into and matched with the limiting groove (21); the upper surface of the clamping mechanism body (22) is provided with a mounting groove (221); a ring cover (222) is fixedly installed on the notch of the mounting groove (221); the mounting groove ( An adjusting screw (223) is provided inside the mounting groove (221); a threaded end of the adjusting screw (223) partially passes through the ring cover (222); a spring (224) is provided around the adjusting screw (223); the spring (224) is provided inside the mounting groove (221); one end of the spring (224) is connected to the nut end of the adjusting screw (223), and the other end is connected to the ring cover (222); the threaded end of the adjusting screw (223) is threadedly connected to a fixing block (225).

2. The three-jaw chuck for laser welding of optical fiber sensitive ring modules according to claim 1, characterized in that: At least two of the limiting grooves (21) are provided; the limiting grooves (21) are arranged at equal intervals.

3. The three-jaw chuck for laser welding of optical fiber sensitive ring modules according to claim 2, characterized in that: The limiting groove (21) is provided with a first special-shaped track (211); and a clamping block (226) matching the first special-shaped track (211) is provided on the outer peripheral side of the clamping mechanism body (22).

4. The three-jaw chuck for laser welding of optical fiber sensitive ring modules according to claim 3, characterized in that: The bottom side wall of the first special-shaped track (211) is provided with a first through hole (212); the clamping mechanism body (22) is also provided with a first screw rod (227), and the clamping block (226) is provided with a threaded hole (2261), the first screw rod (227) passes through the first through hole (212), and the end of the first screw rod (227) is threadedly engaged with the threaded hole (2261).

5. The three-jaw chuck for laser welding of optical fiber sensitive ring modules according to claim 4, characterized in that: Each electric claw (2) is detachably mounted with an accessory module (23) on a side away from the center point of the chuck; a connection groove (231) for use with the clamping mechanism body (22) is provided on the upper surface of the accessory module (23); a second special-shaped track (232) for use with the clamping block (226) is provided on the inner side surface of the connection groove (231); and a second through hole (233) for use with the first screw rod (227) is provided on the bottom side wall of the second special-shaped track (232).

6. The three-jaw chuck for laser welding of optical fiber sensitive ring modules according to claim 1, characterized in that: The nut end of the adjusting screw (223) is arranged in a polygonal shape; the clamping mechanism body (22) is provided with a circular hole (228); the clamping mechanism body (22) is provided with an insert (229) used in conjunction with the circular hole (228); the end of the insert (229) is used to press against the outer peripheral side of the nut end of the adjusting screw (223).

7. The three-jaw chuck for laser welding of optical fiber sensitive ring modules according to claim 1, characterized in that: The fixed block (225) is detachably connected to at least one extension block (2251), and a plurality of the extension blocks (2251) are detachably connected one by one.

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