Locking structure for quick clamping and positioning jig of CNC machining

Abstract

This invention relates to the field of CNC machining rapid clamping and positioning fixture technology, and discloses a locking structure for a CNC machining rapid clamping and positioning fixture, including a base plate, with circular holes on both sides of the top of the base plate, main holes on both sides of the top of the base plate near the circular holes, and secondary holes on both sides of the top of the base plate near the main holes. An actuating cylinder drives a connecting rod to reciprocate, which in turn drives a connecting block to reciprocate, which in turn drives a push rod to reciprocate. One end of the push rod is supported by a secondary structural block to prevent it from falling off during movement. An arc-shaped groove on the top of the main structural block allows the push rod to move in a circular reciprocating motion along the arc trajectory of the groove. A cover plate prevents the push rod from moving up and down. The cooperation between the secondary structural block and the cover plate makes the movement of the push rod more stable. Furthermore, the operation of these parts can accommodate workpieces of different shapes and sizes.

Description

Technical Field

[0001] This invention relates to the field of CNC machining quick clamping and positioning fixture equipment technology, specifically a locking structure for CNC machining quick clamping and positioning fixture. Background Technology

[0002] CNC (Computer Numerical Control) machining is a high-precision machining method used to manufacture various parts and components. During this process, fixtures are required to maintain the stability and accuracy of the workpiece. CNC machining quick-clamping and positioning fixtures use locking structures to achieve rapid workpiece positioning and locking in CNC machining. A common CNC machining quick-clamping and positioning fixture locking structure includes a base, a clamp, and a positioning pin. Using this structure, the workpiece can be quickly placed in the desired position and fixed in place by the clamp.

[0003] However, this device may apply significant pressure to the workpiece during clamping, leading to localized deformation or warping. This is especially true for flexible workpieces or thin sheet materials, where the pressure applied during clamping can cause deformation or inaccurate machining results, thus affecting workpiece quality and manufacturing efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a locking structure for a CNC machining quick clamping and positioning fixture, so as to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0006] This invention relates to a locking structure for a CNC machining quick clamping and positioning fixture, comprising a base plate, with circular holes on both sides of the top of the base plate, main holes on both sides of the top of the base plate near the circular holes, first holes on both sides of the top of the base plate near the main holes, and a plurality of first locking holes on both sides of the top of the base plate near the first holes, with four first locking holes in total. The invention also includes a clamping and positioning locking mechanism, comprising a secondary structural block fixedly connected to the top of the base plate, with second holes at both ends of the top of the secondary structural block, the bottom of the second holes communicating with the top of the first holes. A reciprocating assembly is provided on one side of the top of the base plate.

[0007] Furthermore, the reciprocating assembly includes an L-shaped plate fixedly connected to one side of the top of the base plate. The inner wall of the L-shaped plate has second locking holes at both ends. During installation, the main hole in the base plate aligns with the second main groove in the main structural block, the first hole in the base plate aligns with the second hole in the secondary structural block, the second locking hole in the L-shaped plate aligns with the first locking hole in the base plate, and the first precision hole in the main structural block aligns with the second precision hole in the cover plate. The opening of these holes greatly improves installation efficiency and accuracy, saving significant installation time. The bottom of the second locking hole is connected to the top of the first locking hole.

[0008] Furthermore, a cylinder is fixedly connected through and to one side of the inner wall of the L-shaped plate. Activating the cylinder causes the connecting rod to reciprocate, which in turn causes the connecting block to reciprocate, which in turn causes the push rod to reciprocate. One end of the push rod is supported by a secondary structural block, preventing it from falling off during movement. An arc-shaped groove on the top of the main structural block allows the push rod to move in a circular motion along its arc-shaped trajectory. A cover plate prevents the push rod from moving up and down. The cooperation between the secondary structural block and the cover plate makes the movement of the push rod more stable. Through the coordinated operation of these parts, it can adapt to workpieces of different shapes and sizes. Therefore, the flexibility and reliability of the CNC machining quick-clamping positioning fixture are improved. Operators can activate the cylinder to adjust the position as needed to adapt to different workpiece sizes and shapes, and maintain stability during processing. A hexagonal nut is fixedly connected to one side of the outer wall of the L-shaped plate, with the inner wall of the hexagonal nut located on the outer wall of the cylinder.

[0009] Furthermore, a connecting rod is fixedly connected to the output end of the cylinder, and a locking component is provided at one end of the connecting rod. The locking component includes a connecting block that passes through and is fixedly connected to the outer wall of one end of the connecting rod.

[0010] Furthermore, one end of the connecting rod passes through the connecting block and extends into the interior of the connecting block, and one end of the side wall of the connecting block is provided with an arc-shaped hole, which is arranged in two corresponding arc-shaped grooves.

[0011] Furthermore, a push rod is fitted and movably connected to the inner wall of the arc-shaped hole. This device uses the push rod for clamping, which reduces the pressure on the workpiece during operation and reduces the probability of local deformation or deformation. Especially for flexible workpieces or thin sheet materials, the reduced pressure during clamping can reduce the probability of deformation and improve the accuracy of workpiece processing. The device can also perform automated processing, eliminating the need for manual operation when the fixture is clamped on the left and right, thus improving production efficiency and avoiding clamping injuries caused by improper operation by workers. One end of the push rod is movably connected to the top middle of the secondary structural block, and auxiliary components are provided on the top of the base plate.

[0012] Furthermore, the auxiliary component includes a main structural block fixedly connected to the center of the top of the base plate, with an arc-shaped groove on one side of the top of the main structural block and a first main groove on each of the two ends of the top of the main structural block.

[0013] Furthermore, the bottom of the inner wall of the first main groove is connected to a second main groove, one end of which penetrates the main structural block and extends to the outside of the main structural block, and the bottom of the second main groove is connected to the top of the main hole.

[0014] Furthermore, the main structural block has first precision holes at both ends near the top of the first main groove. A cover plate is fixedly connected to the top of the main structural block. The cover plate has second precision holes at both ends of its top. The bottom of the second precision hole is connected to the top of the first precision hole.

[0015] The present invention has the following beneficial effects:

[0016] (1) In this invention, the cylinder is activated, which drives the connecting rod to reciprocate. The connecting rod drives the connecting block to reciprocate, and the connecting block drives the push rod to reciprocate. One end of the push rod is supported by the secondary structural block, which prevents the push rod from falling off during the movement. Through the arc groove set on the top of the main structural block, the push rod forms a circular reciprocating motion along the arc trajectory of the arc groove. The cover plate prevents the push rod from moving up and down. Through the cooperation of the secondary structural block and the cover plate, the movement of the push rod is more stable. Moreover, through the cooperation of the above parts, it can adapt to workpieces of different shapes and sizes. Therefore, the flexibility and reliability of the CNC machining quick clamping and positioning fixture are also improved. The operator can activate the cylinder to adjust the position as needed to adapt to the size and shape of different workpieces and maintain stability during the machining process.

[0017] (2) In the installation process, the main hole in the base plate is aligned with the second main groove in the main structural block, the first hole in the base plate is aligned with the second hole in the secondary structural block, the second locking hole in the L-shaped plate is aligned with the first locking hole in the base plate, and the first precision hole in the main structural block is aligned with the second precision hole in the cover plate. By opening the above holes, the installation efficiency is greatly improved, the installation accuracy is enhanced, and a lot of installation time is saved.

[0018] (3) In this invention, the device uses a push rod for clamping, which reduces the pressure on the workpiece during operation and reduces the probability of local deformation or deformation of the workpiece. Especially for flexible workpieces or thin plate materials, the reduced pressure during clamping can reduce the probability of workpiece deformation and improve the accuracy of workpiece processing. In addition, the device can perform automated processing operations, so that the jig does not need manual operation when locking the left and right sides, which improves production efficiency and avoids clamping injuries caused by improper operation by the staff.

[0019] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a top view of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the overall exploded structure of the present invention;

[0023] Figure 3 This is a top view of the base plate structure of the present invention;

[0024] Figure 4 This is a cross-sectional top view of the reciprocating component of the present invention;

[0025] Figure 5 This is a cross-sectional view of the locking component of the present invention;

[0026] Figure 6 This is a cross-sectional view of the locking component of the present invention;

[0027] Figure 7 This is a cross-sectional view of the auxiliary component of the present invention;

[0028] Figure 8 For the present invention Figure 4 A magnified view of A in the middle.

[0029] The attached diagram lists the components represented by each number as follows:

[0030] In the diagram: 1. Base plate; 2. Circular hole; 3. Main hole; 4. First hole; 5. First locking hole; 6. Clamping and positioning locking mechanism; 61. Secondary structural block; 62. Second hole; 63. Reciprocating assembly; 64. Locking assembly; 65. Auxiliary assembly; 631. L-shaped plate; 632. Second locking hole; 633. Cylinder; 634. Hexagonal nut; 635. Connecting rod; 656. Cover plate; 641. Connecting block; 642. Arc-shaped hole; 643. Push rod; 651. Main structural block; 652. Arc-shaped groove; 653. First precision hole; 654. First main groove; 655. Second main groove; 657. Second precision hole. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Please see Figures 1-8 As shown, the present invention is a locking structure for a CNC machining quick clamping and positioning fixture, including a base plate 1, with round holes 2 on both sides of the top of the base plate 1, main holes 3 on both sides of the top of the base plate 1 near the round holes 2, first holes 4 on both sides of the top of the base plate 1 near the main holes 3, and several first locking holes 5 on both sides of the top of the base plate 1 near the first holes 4. The purpose of this arrangement is to facilitate the alignment and installation of the L-shaped plate 631. There are four first locking holes 5, and it also includes;

[0033] The clamping and positioning locking mechanism 6 includes a secondary structural block 61 fixedly connected to the top of the base plate 1. The top two ends of the secondary structural block 61 are respectively provided with a second hole 62. The bottom of the second hole 62 is connected to the top of the first hole 4. The purpose of this arrangement is to facilitate installation. A reciprocating component 63 is provided on one side of the top of the base plate 1.

[0034] The reciprocating assembly 63 includes an L-shaped plate 631 fixedly connected to one side of the top of the base plate 1. The bottom ends of the inner wall of the L-shaped plate 631 are respectively provided with second locking holes 632, and the bottom of the second locking holes 632 is connected to the top of the first locking hole 5.

[0035] A cylinder 633 is connected through and fixedly to one side of the inner wall of the L-shaped plate 631. The purpose of this arrangement is to drive the device to perform automated work. A hexagonal nut 634 is fixedly connected to one side of the outer wall of the L-shaped plate 631. The purpose of this arrangement is to enhance the stability of the cylinder 633. The inner wall of the hexagonal nut 634 is located on the outer wall of the cylinder 633.

[0036] A connecting rod 635 is fixedly connected to the output end of the cylinder 633. A locking component 64 is provided at one end of the connecting rod 635. The locking component 64 includes a connecting block 641 that passes through and is fixedly connected to the outer wall of one end of the connecting rod 635. The purpose of this arrangement is to enhance the stability with the connecting block 641.

[0037] One end of the connecting rod 635 passes through the connecting block 641 and extends into the interior of the connecting block 641. An arc-shaped hole 642 is provided at one end of the side wall of the connecting block 641. The arc-shaped hole 642 is arranged in two corresponding arc-shaped grooves.

[0038] A push rod 643 is fitted and movably connected to the inner wall of the arc-shaped hole 642. One end of the push rod 643 is movably connected to the top middle of the secondary structural block 61. An auxiliary component 65 is provided on the top of the base plate 1.

[0039] The auxiliary component 65 includes a main structural block 651 fixedly connected to the top center of the base plate 1. An arc-shaped groove 652 is provided on one side of the top of the main structural block 651. The purpose of this design is to enable circular reciprocating movement. First main grooves 654 are provided at both ends of the top of the main structural block 651.

[0040] The bottom of the inner wall of the first main groove 654 is connected to the second main groove 655. One end of the second main groove 655 passes through the main structural block 651 and extends to the outside of the main structural block 651. The bottom of the second main groove 655 is connected to the top of the main hole 3.

[0041] The main structural block 651 has first precision holes 653 at both ends near the top of the first main groove 654. The top of the main structural block 651 is fixedly connected to a cover plate 656. The purpose of this arrangement is to prevent the push rod 643 from moving up and down. The top of the cover plate 656 has second precision holes 657 at both ends. The bottom of the second precision hole 657 is connected to the top of the first precision hole 653.

[0042] In use, cylinder 633 is activated, which drives connecting rod 635 to reciprocate. Connecting rod 635 drives connecting block 641 to reciprocate, and connecting block 641 drives push rod 643 to reciprocate. One end of push rod 643 is supported by secondary structural block 61, preventing push rod 643 from falling off during movement. Through the arc groove 652 set on the top of main structural block 651, push rod 643 forms a circular reciprocating motion along the arc trajectory of arc groove 652. The cover plate 656 prevents push rod 643 from moving up and down. Through the cooperation of secondary structural block 61 and cover plate 656, the movement of push rod 643 is more stable. Moreover, through the cooperation of the above parts, it can adapt to workpieces of different shapes and sizes. Therefore, the flexibility and reliability of CNC machining quick clamping and positioning fixture are improved. The operator can activate cylinder 633 to adjust the position as needed to adapt to different workpiece sizes and shapes, and maintain stability during the machining process.

[0043] During installation, the main hole 3 in the base plate 1 is aligned with the second main groove 655 in the main structural block 651, the first hole 4 in the base plate 1 is aligned with the second hole 62 in the secondary structural block 61, the second locking hole 632 in the L-shaped plate 631 is aligned with the first locking hole 5 in the base plate 1, and the first precision hole 653 in the main structural block 651 is aligned with the second precision hole 657 in the cover plate 656. By opening the above holes, the installation efficiency is greatly improved, the installation accuracy is enhanced, and a lot of installation time is saved.

[0044] The device uses push rod 643 for clamping, which reduces the pressure on the workpiece during operation and decreases the probability of local deformation or deformation. This is especially beneficial for flexible workpieces or thin sheet materials, as the reduced pressure during clamping reduces the probability of deformation and improves the accuracy of workpiece processing. Furthermore, the device can automate the processing, eliminating the need for manual operation when the fixture is clamping left and right, thus improving production efficiency and preventing clamping injuries to workers due to improper operation.

[0045] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A locking structure for a CNC machining quick clamping and positioning fixture, comprising a base plate (1), characterized in that: The bottom plate (1) has round holes (2) on both sides of its top. The bottom plate (1) has main holes (3) on both sides of its top near the round holes (2). The bottom plate (1) has first holes (4) on both sides of its top near the main holes (3). The bottom plate (1) has several first locking holes (5) on both sides of its top near the first holes (4). There are four first locking holes (5). The clamping and positioning locking mechanism (6) includes a secondary structural block (61) fixedly connected to the top of the base plate (1). The top two ends of the secondary structural block (61) are respectively provided with a second hole (62). The bottom of the second hole (62) is connected to the top of the first hole (4). A reciprocating component (63) is provided on one side of the top of the base plate (1). The reciprocating assembly (63) includes an L-shaped plate (631) fixedly connected to one side of the top of the base plate (1). A cylinder (633) is fixedly connected through one side of the inner wall of the L-shaped plate (631). A connecting rod (635) is fixedly connected to the output end of the cylinder (633). A locking assembly (64) is provided at one end of the connecting rod (635). The locking assembly (64) includes a connecting block (641) that is fixedly connected through one end of the connecting rod (635). One end of the connecting rod (635) passes through the connecting block (641) and extends into the interior of the connecting block (641). An arc-shaped hole (642) is provided at one end of the side wall of the connecting block (641). The arc-shaped hole (642) is generally arranged in two corresponding arc-shaped grooves. The inner wall of the arc-shaped hole (642) is fitted with and movably connected to a push rod (643). One end of the push rod (643) is movably connected to the top middle of the secondary structural block (61). An auxiliary component (65) is provided on the top of the base plate (1). The auxiliary component (65) includes a main structural block (651) fixedly connected to the top center of the base plate (1), and an arc groove (652) is provided on one side of the top of the main structural block (651). The top two ends of the main structural block (651) are respectively provided with a first main groove (654); The bottom of the inner wall of the first main groove (654) is connected to the second main groove (655); One end of the second main groove (655) passes through the main structural block (651) and extends to the outside of the main structural block (651). The bottom of the second main groove (655) is connected to the top of the main hole (3). The main structural block (651) has first precision holes (653) at both ends near the top of the first main groove (654), and a cover plate (656) is fixedly connected to the top of the main structural block (651). The top two ends of the cover plate (656) are respectively provided with second precision holes (657), and the bottom of the second precision hole (657) is connected to the top of the first precision hole (653).

2. The locking structure for quick clamping and positioning jig for CNC machining according to claim 1, characterized in that: The inner wall of the L-shaped plate (631) has two second card holes (632) at its bottom ends, and the bottom of the second card hole (632) is connected to the top of the first card hole (5).

3. The locking structure for a CNC machining quick clamping and positioning fixture according to claim 2, characterized in that: A hexagonal nut (634) is fixedly connected to one side of the outer wall of the L-shaped plate (631), and the inner wall of the hexagonal nut (634) is located on the outer wall of the cylinder (633).

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