Multi-acupoint CNC (computer numerical control) precise clamping jig for machining U-shaped accessories

Abstract

The utility model discloses a multi-hole CNC (computer numerical control) precise clamping jig for machining U-shaped accessories. The multi-hole CNC precise clamping jig comprises a jig platform, a plurality of clamping holes formed in the jig platform, and a mounting bracket used for being connected with CNC equipment, each clamping hole comprises a positioning groove formed in the jig platform, and at least one jacking and pressing mechanism and a side pressing mechanism which are arranged around the periphery of the positioning groove at intervals; the jacking and pressing mechanism comprises a jacking and pressing clamping jaw and a rotary downward pressing air cylinder used for driving the jacking and pressing clamping jaw; the rotary downward pressing air cylinder is used for driving the jacking clamping jaw to press the U-shaped accessory into the positioning groove from the top. And the side pressing mechanism is used for pressing the U-shaped accessory into the positioning groove from the side surface. According to the utility model, a plurality of clamping holes are arranged, so that a plurality of U-shaped fittings can be processed at the same time each time, the waiting time of a machine table is saved, high-efficiency large-batch processing production is realized, and the processing efficiency of the U-shaped fittings is improved.

Description

Technical Field

[0001] This utility model relates to the field of CNC machining technology, and in particular to a multi-cavity CNC precision jig for machining U-shaped parts. Background Technology

[0002] Currently, most mobile phone USB accessories are manufactured directly by CNC machines. However, this process only allows for the machining of one USB accessory at a time, and only one product surface can be processed, resulting in low efficiency. Furthermore, it requires repeated clamping and disassembly, necessitating the re-establishment of reference points each time. Improper clamping and disassembly operations often lead to product positioning deviations, resulting in low machining accuracy, long production cycles, and high labor costs. Utility Model Content

[0003] The purpose of this invention is to provide a multi-cavity CNC precision jig for machining U-shaped parts. By setting multiple clamping cavities, multiple U-shaped parts can be machined simultaneously, saving machine waiting time and enabling efficient mass production, thus improving the machining efficiency of U-shaped parts. Furthermore, by setting a mounting bracket, the entire jig can be mounted onto the CNC machine. Driven by the CNC machine, the entire jig can rotate to adjust its angle, thereby achieving the effect of machining multiple product surfaces in a single clamping operation. This reduces the number of times U-shaped parts need to be clamped and disassembled, lowers labor costs, and improves the machining accuracy of U-shaped parts.

[0004] To achieve the above objectives, the following technical solution is adopted:

[0005] A multi-cavity CNC precision jig for machining U-shaped parts includes a jig platform, multiple clamping cavities on the jig platform, and a mounting bracket for connecting to a CNC machine. Each clamping cavity includes a positioning groove on the jig platform, and at least one top-pressing mechanism and one side-pressing mechanism arranged at intervals around the outer periphery of the positioning groove. The top-pressing mechanism includes a top-pressing jaw and a rotary downward-pressing cylinder for driving the top-pressing jaw. The rotary downward-pressing cylinder is used to drive the top-pressing jaw to press the U-shaped part into the positioning groove from the top. The side-pressing mechanism is used to press the U-shaped part into the positioning groove from the side.

[0006] Preferably, the mounting bracket includes a flange and two connecting plates disposed on the same side of the flange; the connecting plates are disposed perpendicular to the flange, and a fixture platform is disposed between the tops of the two connecting plates; the tops of the two connecting plates are located on the same horizontal plane, and the horizontal plane is perpendicular to the flange.

[0007] Preferably, the height of the connecting plate gradually decreases at the end furthest from the flange.

[0008] Preferably, the fixture platform is provided with at least one positioning post for each top-pressing jaw; the top-pressing jaw is provided with a positioning hole that matches the positioning post; when the rotating pressing cylinder drives the top-pressing jaw to rotate and press down, the positioning post is inserted into the corresponding positioning hole.

[0009] Preferably, the free end of the top-pressing claw extends downward to form a first protrusion.

[0010] Preferably, the side-pressing mechanism includes a side-pressing gripper and a side-pressing drive for driving the side-pressing gripper to press or release the U-fitting.

[0011] Preferably, the free end of the side-pressure gripper extends toward the positioning groove to form a second protrusion.

[0012] By adopting the above solution, the beneficial effects of this utility model are:

[0013] This invention, by setting multiple clamping points, allows for the simultaneous processing of multiple U-shaped parts at once, saving machine waiting time and enabling efficient mass production, thus improving the processing efficiency of U-shaped parts. Simultaneously, by setting a mounting bracket, the entire fixture can be mounted onto a CNC machine. The CNC machine allows the fixture to rotate and adjust its angle, achieving the effect of processing multiple product surfaces in a single clamping operation. This reduces the number of clamping and unclamping operations for U-shaped parts, lowers labor costs, and improves the processing accuracy of U-shaped parts. Furthermore, by incorporating top-pressure and side-pressure mechanisms, the clamping and unclamping of U-shaped parts can be automatically positioned with high accuracy. Attached Figure Description

[0014] Figure 1 This is a perspective view of the present utility model;

[0015] Figure 2 This is a perspective view of the present invention without the installation bracket;

[0016] Figure 3 This is a perspective view of the top-pressing mechanism of this utility model;

[0017] Figure 4 This is a perspective view of the side-pressure mechanism of this utility model;

[0018] The following are explanations of the labels in the attached diagram:

[0019] 1—Jig platform, 2—Mounting bracket,

[0020] 3—Positioning groove, 4—Top pressing mechanism,

[0021] 5—Side pressure mechanism, 6—U-shaped fitting,

[0022] 21—Flange, 22—Connecting plate,

[0023] 41—Top pressure gripper, 42—Rotary downward pressure cylinder,

[0024] 43—Locking pin, 44—First boss,

[0025] 51—Side pressure gripper, 52—Side pressure drive component,

[0026] 53—Second protrusion. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0030] Reference Figures 1 to 4As shown, this utility model provides a multi-cavity CNC precision jig for machining U-shaped parts, including a jig platform 1, multiple clamping cavities provided on the jig platform 1, and a mounting bracket 2 for connecting to a CNC machine. In one specific embodiment, there are 4 clamping cavities, and 4 U-shaped parts can be machined simultaneously at a time. Each clamping cavity includes a positioning groove 3 formed on the jig platform 1, and at least one top pressing mechanism 4 and a side pressing mechanism 5 arranged at intervals around the outer periphery of the positioning groove 3. The top pressing mechanism 4 includes a top pressing jaw 41 and a rotary pressing cylinder 42 for driving the top pressing jaw 41. The rotary pressing cylinder 42 is used to drive the top pressing jaw 41 to press the U-shaped part 6 into the positioning groove 3 from the top. The rotary pressing cylinder 42 has both rotational lifting and rotational pressing functions.

[0031] Specifically, before the U-part 6 is placed into the positioning groove 3, all the rotating pressing cylinders 42 of the pressing mechanism 4 operate simultaneously, driving the corresponding pressing jaws 41 to rotate and rise (at this time, the pressing jaws 41 rotate to the outside of the positioning groove 3 to avoid interfering with the placement of the U-part 6); after the U-part 6 is placed into the positioning groove 3, all the rotating pressing cylinders 42 of the pressing mechanism 4 operate simultaneously, driving the corresponding pressing jaws 41 to rotate and press down (at this time, the pressing jaws 41 rotate to the top of the positioning groove 3), pressing the U-part 6 into the positioning groove 3 from the top, and the side pressing mechanism 5 presses the U-part 6 into the positioning groove 3 from the side, realizing automatic clamping of the U-part 6.

[0032] In one specific embodiment, the positioning groove 3 is a U-shaped groove with its opening facing the outside of the fixture platform 1, and the bottom of the U-shaped groove has a stepped structure. When the top-pressing claw 41 presses down, it presses the U-shaped part 6 firmly onto the stepped structure to prevent the U-shaped part 6 from falling off. Three top-pressing mechanisms 4 are provided, corresponding to the horizontal end and two vertical ends of the U-shape of the U-shaped part 6, respectively. The side-pressing mechanism 5 is located at the opening of the U-shaped groove, pressing the horizontal end of the U-shape of the U-shaped part 6 from the side.

[0033] The mounting bracket 2 includes a flange 21 and two connecting plates 22 disposed on the same side of the flange 21; the connecting plates 22 are disposed perpendicular to the flange 21, and the fixture platform 1 is disposed between the tops of the two connecting plates 22; the tops of the two connecting plates 22 are located on the same horizontal plane, and the horizontal plane is perpendicular to the flange 21.

[0034] By setting up a structure with flange 21 and connecting plate 22, flange 21 connects to the CNC equipment, and connecting plate 22 serves as a support for the fixture. The tops of the two connecting plates 22 are located on the same horizontal plane, and this horizontal plane is perpendicular to flange 21, ensuring the flatness and perpendicularity of the U-shaped part 6 positioned by the fixture. This results in more accurate positioning of the U-shaped part 6, smaller machining errors, and higher stability. The fixture can be installed on the CNC equipment, and after the machine setup is completed on the CNC equipment, it can be used repeatedly for a long time with high positioning accuracy.

[0035] Furthermore, considering weight and aesthetics, the compatibility of the fixture with various CNC equipment models, and the issue of fixture misalignment, the height of the connecting plate 22 at the end furthest from the flange 21 was designed to gradually decrease.

[0036] To prevent the top-pressing jaw 41 from shifting and to ensure that the top-pressing jaw 41 can effectively press down on the U-part 6, the fixture platform 1 is provided with at least one positioning post 43 for each top-pressing jaw 41; the top-pressing jaw 41 is provided with a positioning hole that matches the positioning post 43; when the rotating pressing cylinder 42 drives the top-pressing jaw 41 to rotate and press down, the positioning post 43 is inserted into the corresponding positioning hole, which plays a role in positioning and guiding.

[0037] The free end of the top-pressing claw 41 extends downward to form a first protrusion 44. By setting the first protrusion 44, the downward pressing clamping force of the top-pressing claw 41 is guaranteed.

[0038] The side-pressing mechanism 5 includes a side-pressing gripper 51 and a side-pressing drive component 52 for driving the side-pressing gripper 51 to press or release the U-shaped accessory 6. Specifically, the side-pressing drive component 52 is a cylinder. The free end of the side-pressing gripper 51 extends towards the positioning groove 3 to form a second protrusion 53. By setting the second protrusion 53, the side-pressing clamping force of the side-pressing gripper 51 is ensured.

[0039] This utility model provides a multi-cavity CNC precision jig for U-shaped parts processing: 1) It can process multiple U-shaped parts 6 at one time, reducing the waiting time of the machine and realizing batch processing production; 2) It can reduce the number of times the U-shaped parts 6 are assembled and disassembled, making the operation simple, efficient and quality guaranteed; 3) The positioning accuracy of the U-shaped parts 6 is high, and the processed products have good consistency; 4) It is installed on the CNC equipment through the flange 21, and the CNC equipment can drive the entire jig to rotate and adjust to the product surface to be processed, realizing the processing of complex and irregular U-shaped parts 6.

[0040] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the utility model and are not intended to limit the implementation of this utility model. For those skilled in the art, various obvious changes, readjustments, and substitutions can be made without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A multi-cavity CNC precision jig for machining U-shaped fittings, characterized in that, The device includes a fixture platform, multiple clamping slots on the fixture platform, and a mounting bracket for connection to a CNC machine. Each clamping slot includes a positioning groove on the fixture platform, and at least one top-pressing mechanism and one side-pressing mechanism arranged at intervals around the outer periphery of the positioning groove. The top-pressing mechanism includes a top-pressing jaw and a rotary downward-pressing cylinder for driving the top-pressing jaw. The rotary downward-pressing cylinder is used to drive the top-pressing jaw to press the U-shaped part into the positioning groove from the top. The side-pressing mechanism is used to press the U-shaped part into the positioning groove from the side.

2. The multi-cavity CNC precision jig for machining U-shaped parts according to claim 1, characterized in that, The mounting bracket includes a flange and two connecting plates located on the same side of the flange; the connecting plates are arranged perpendicular to the flange, and a fixture platform is located between the tops of the two connecting plates; the tops of the two connecting plates are located on the same horizontal plane, and this horizontal plane is perpendicular to the flange.

3. The multi-cavity CNC precision jig for machining U-shaped parts according to claim 2, characterized in that, The height of the connecting plate gradually decreases at the end furthest from the flange.

4. The multi-cavity CNC precision jig for machining U-shaped parts according to claim 1, characterized in that, The fixture platform is provided with at least one positioning post for each top-pressing jaw; the top-pressing jaw is provided with a positioning hole that matches the positioning post; when the rotating pressing cylinder drives the top-pressing jaw to rotate and press down, the positioning post is inserted into the corresponding positioning hole.

5. The multi-cavity CNC precision jig for machining U-shaped parts according to claim 1, characterized in that, The free end of the top-pressing gripper extends downward to form a first protrusion.

6. The multi-cavity CNC precision jig for machining U-shaped parts according to claim 1, characterized in that, The side-pressing mechanism includes a side-pressing gripper and a side-pressing drive for driving the side-pressing gripper to press or release the U-fitting accessory.

7. The multi-cavity CNC precision jig for machining U-shaped parts according to claim 6, characterized in that, The free end of the side-pressure gripper extends toward the positioning groove to form a second protrusion.

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