Workpiece multistage positioning device for numerical control milling machine

Abstract

The utility model discloses a workpiece multistage positioning device for a numerical control milling machine, which relates to the technical field of workpiece positioning devices and comprises a workbench, bases are fixedly connected to the bottom of the workbench at equal intervals, a stand column is fixedly connected to the top of the workbench, a placing plate is fixedly connected to the top of the stand column, and through grooves are formed in the top of the workbench at equal intervals. A mounting plate is slidably connected into the through groove, and a rotating rod is rotatably connected to one side of the mounting plate. According to the workpiece multi-stage positioning device for the numerical control milling machine, an operator can quickly replace the clamp through the adjusting assembly without disassembling the clamp, time is saved, and working efficiency is improved. Meanwhile, due to the design of the connecting block and the limiting block, operation is more visual, operation difficulty is lowered, and errors are reduced. And the abutting assembly is arranged, so that the rectangular clamping block can flexibly adapt to workpieces with different thicknesses, and the limitation of a traditional clamp is solved. And the displacement assembly can adjust the distance between the clamping blocks to adapt to workpieces of various sizes.

Description

Technical Field

[0001] This utility model relates to the technical field of workpiece positioning devices, and in particular to a multi-stage workpiece positioning device for CNC milling machines. Background Technology

[0002] A CNC milling machine is a machine tool that uses computer numerical control technology to perform milling operations. It can control the movement of the cutting tool and the position of the workpiece through a pre-programmed program, thereby achieving high-precision and high-efficiency machining. CNC milling machines are widely used in industries such as machinery manufacturing, aerospace, automotive, and mold making, and can process parts of various complex shapes.

[0003] When using a CNC milling machine, it is necessary to position and fix the workpiece. Existing workpiece positioning devices are mostly vises and chucks. Vises are used to fix square workpieces, and chucks are used to fix round workpieces except for spheres. It is necessary to disassemble and replace the two fixtures on the worktable, which is extremely inconvenient. In order to solve the above problems, we have introduced a multi-stage workpiece positioning device for CNC milling machines. Summary of the Invention

[0004] This utility model discloses a multi-level positioning device for workpieces on CNC milling machines. It studies and improves upon the existing structure and its shortcomings, and provides a multi-level positioning device for workpieces on CNC milling machines to achieve better practical value.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A multi-stage workpiece positioning device for a CNC milling machine includes a worktable. A base is fixedly connected to the bottom of the worktable at equal intervals. A column is fixedly connected to the top of the worktable, and a placement plate is fixedly connected to the top of the column. Through slots are equidistantly opened on the top of the worktable. A mounting plate is slidably connected inside the through slots. A rotating rod is rotatably connected to one side of the mounting plate. A mounting block is fixedly connected to the outer side of the rotating rod. A first mounting rod is fixedly connected to the top of the mounting block. An arc-shaped clamping block is fixedly connected to the top of the first mounting rod. A second mounting rod is fixedly connected to one side of the mounting block. A rectangular clamping block is fixedly connected to one end of the second mounting rod. An adjusting component is provided at one end of the rotating rod to drive the rotating rod to rotate. A clamping component is provided inside the rectangular clamping block. A displacement component is provided at the bottom of the worktable to move the mounting plate.

[0007] In a preferred embodiment, the adjusting assembly includes a nut threadedly connected to the outside of the rotating rod, one end of the nut abutting against one side of the mounting plate, one end of the rotating rod having a groove with a connecting block inside the groove, and two limiting blocks fixedly connected to one side of the mounting plate.

[0008] In a preferred embodiment, the angle between the two limiting blocks is 90°.

[0009] In a preferred embodiment, the clamping assembly includes a pull rod slidably connected inside a rectangular clamping block, with a clamping block fixedly connected to the bottom of the pull rod, and a spring provided on the outer side of the pull rod.

[0010] In a preferred embodiment, the displacement assembly includes two fixing blocks, which are fixedly connected to the bottom of the worktable. The bottom of the mounting plate extends to the bottom of the worktable and is fixedly connected to a fixing plate. A lead screw is rotatably connected to one side of each fixing block, and the outer side of the lead screw is threadedly connected to the inside of the fixing plate.

[0011] In a preferred embodiment, one end of the lead screw is fixedly connected to a turntable, and one end of the turntable is rotatably connected to a handle.

[0012] The multi-stage workpiece positioning device for CNC milling machines provided by this utility model has the following advantages:

[0013] Firstly, by utilizing adjustment components and a simplified replacement process, operators can quickly change the fixture without disassembling the entire fixture, saving time and improving work efficiency. The design of the contact method between the connecting block and the limiting block makes the operation process more intuitive, reduces the difficulty of operation, and reduces errors caused by improper operation. At the same time, the installation of arc-shaped and rectangular clamping blocks makes the device applicable to workpieces of different shapes, improving the versatility of the equipment and enabling it to solve various processing needs.

[0014] Secondly, by setting up a clamping component, the rectangular clamping block can flexibly adapt to rectangular workpieces of different thicknesses, solving the problem that traditional clamps can only fix materials of a specific thickness, thus improving the versatility of the clamps.

[0015] Thirdly, by setting displacement components, the distance between clamping blocks can be adjusted to accommodate workpieces of various sizes, making the fixture more versatile and suitable for more processing needs. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of a multi-stage workpiece positioning device for a CNC milling machine proposed in this utility model.

[0017] Figure 2 This is a first exploded view of a multi-stage workpiece positioning device for a CNC milling machine proposed in this utility model.

[0018] Figure 3 This is a second exploded view of a multi-stage workpiece positioning device for a CNC milling machine proposed in this utility model.

[0019] Figure 4 This is a third exploded view of a multi-stage workpiece positioning device for a CNC milling machine proposed in this utility model.

[0020] In the attached diagram: 1. Workbench; 2. Base; 3. Column; 4. Placement plate; 5. Through groove; 6. Mounting plate; 7. Rotating rod; 8. Mounting block; 9. First mounting rod; 10. Arc-shaped clamping block; 11. Second mounting rod; 12. Rectangular clamping block; 13. Nut; 14. Groove; 15. Connecting block; 16. Limiting block; 17. Pull rod; 18. Clamping block; 19. Spring; 20. Fixing plate; 21. Fixing block; 22. Lead screw; 23. Turntable; 24. Handle. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and marked in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0022] The multi-level workpiece positioning device for CNC milling machines disclosed in this utility model is mainly used in workpiece positioning device scenarios.

[0023] Reference Figures 1 to 4 A multi-stage workpiece positioning device for a CNC milling machine includes: a worktable 1, a base 2 fixedly connected at equal intervals to the bottom of the worktable 1, a column 3 fixedly connected to the top of the worktable 1, a placement plate 4 fixedly connected to the top of the column 3, through slots 5 equidistantly opened on the top of the worktable 1, a mounting plate 6 slidably connected inside the through slots 5, a rotating rod 7 rotatably connected to one side of the mounting plate 6, a mounting block 8 fixedly connected to the outside of the rotating rod 7, a first mounting rod 9 fixedly connected to the top of the mounting block 8, an arc-shaped clamping block 10 fixedly connected to the top of the first mounting rod 9, a second mounting rod 11 fixedly connected to one side of the mounting block 8, a rectangular clamping block 12 fixedly connected to one end of the second mounting rod 11, an adjustment component provided at one end of the rotating rod 7 for driving the rotating rod 7 to rotate, a clamping component provided inside the rectangular clamping block 12, and a displacement component provided at the bottom of the worktable 1 for driving the mounting plate 6 to move.

[0024] The adjusting assembly includes a nut 13, which is threaded to the outside of the rotating rod 7. One end of the nut 13 abuts against one side of the mounting plate 6. One end of the rotating rod 7 has a groove 14, and a connecting block 15 is provided inside the groove 14. Two limiting blocks 16 are fixedly connected to one side of the mounting plate 6.

[0025] The angle between the two limit blocks 16 is 90°.

[0026] In the above technical solution, considering that CNC milling machines need to position and fix workpieces during use, the existing workpiece positioning devices are mostly vises and chucks. Vises are used to fix square workpieces, and chucks are used to fix round workpieces other than spheres. It is extremely inconvenient to disassemble and replace the two types of fixtures on the worktable. In order to solve this problem, the specific operation is as follows: Arc-shaped clamping block 10 and rectangular clamping block 12 are installed on the mounting block 8 at the same time, and they are perpendicular to each other. When changing the clamp using the adjustment assembly, simply insert the connecting block 15 into the groove 14 and secure it with screws. At this point, the top of the connecting block 15 will contact the bottom of the limiting block 16. Next, loosen the nuts 13 on both sides of the rotating rod 7. Utilizing the 90° angle between the two limiting blocks 16, rotate the rotating rod 7 so that one side of the connecting block 15 contacts one side of the lower limiting block 16. This allows the rotating rod 7 to be rotated 90°, moving the rectangular clamping block 12 to the lower position and switching to the arc-shaped clamping block 10. Finally, tighten the nuts 13 to complete the fixation. By simply rotating the nuts 13 repeatedly, the arc-shaped clamping block 10 and the rectangular clamping block 12 can be easily switched back and forth. By utilizing adjustment components and a simplified replacement process, operators can quickly change the fixture without disassembling the entire fixture, saving time and improving work efficiency. The design of the contact method between the connecting block 15 and the limiting block 16 makes the operation process more intuitive, reduces the difficulty of operation, and reduces errors caused by improper operation. At the same time, the installation of the arc-shaped clamping block 10 and the rectangular clamping block 12 makes the device applicable to workpieces of different shapes, improving the versatility of the equipment and enabling it to solve a variety of processing needs.

[0027] Reference Figures 1 to 4 In a preferred embodiment, the clamping assembly includes a pull rod 17, which is slidably connected inside the rectangular clamping block 12. A clamping block 18 is fixedly connected to the bottom of the pull rod 17, and a spring 19 is provided on the outer side of the pull rod 17. When using the rectangular clamping block 12, the clamping block 18 is moved upward by pulling the pull rod 17, and the spring 19 is compressed. Then, the rectangular workpiece is placed into the rectangular clamping block 12. The elasticity of the spring 19 causes the clamping block 18 to clamp the workpiece from above, thereby achieving a stable clamping effect and reducing the offset or movement of the workpiece during processing. This allows the rectangular clamping block 12 to flexibly adapt to rectangular workpieces of different thicknesses, solving the problem that traditional fixtures can only fix materials of a specific thickness and improving the versatility of the fixture.

[0028] Reference Figures 1 to 4 In a preferred embodiment, the displacement assembly includes two fixed blocks 21, which are fixedly connected to the bottom of the worktable 1. The bottom of the mounting plate 6 extends to the bottom of the worktable 1 and is fixedly connected to a fixed plate 20. A lead screw 22 is rotatably connected to one side of the fixed block 21, and the outer side of the lead screw 22 is threadedly connected to the inside of the fixed plate 20. A turntable 23 is fixedly connected to one end of the lead screw 22, and a handle 24 is rotatably connected to one end of the turntable 23. By rotating the handle 24, the turntable 23 is driven to rotate, which in turn drives the lead screw 22 to rotate, causing the two fixed plates 20 to move closer to each other. Then, the two sets of mounting plates 6 move relative to each other inside the through groove 5, thereby adjusting the distance between the clamping blocks. This allows the fixture to adapt to workpieces of various sizes, making it more versatile and suitable for more processing needs.

[0029] Working principle: In use, place the workpiece on the placement plate 4, and rotate the handle 24 to drive the turntable 23, which in turn drives the lead screw 22 to rotate, bringing the two fixed plates 20 closer together. This causes the two sets of mounting plates 6 to move relative to each other within the through groove 5, thereby adjusting the distance between the clamping blocks and holding the workpiece for processing. When changing the fixture, simply insert the connecting block 15 into the groove 14 and fix it with screws. At this time, the top of the connecting block 15 will contact the bottom of the limit block 16. Next, loosen the nuts on both sides of the rotating rod 7. 13. Utilizing the 90° angular relationship between the two limiting blocks 16, rotate the rotating rod 7 so that one side of the connecting block 15 contacts one side of the lower limiting block 16. In this way, the rotating rod 7 can be rotated 90° to move the rectangular clamping block 12 to the lower position and switch to the arc-shaped clamping block 10. Finally, tighten the nut 13 to complete the fixation. By simply rotating the nut 13 repeatedly, the arc-shaped clamping block 10 and the rectangular clamping block 12 can be easily switched back and forth. All contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0030] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.

Claims

1. A multi-stage workpiece positioning device for a CNC milling machine, comprising a worktable (1), characterized in that, The bottom of the workbench (1) is fixedly connected to a base (2) at equal intervals, the top of the workbench (1) is fixedly connected to a column (3), the top of the column (3) is fixedly connected to a placement plate (4), the top of the workbench (1) is provided with through slots (5) at equal intervals, the inside of the through slots (5) is slidably connected to a mounting plate (6), one side of the mounting plate (6) is rotatably connected to a rotating rod (7), the outside of the rotating rod (7) is fixedly connected to a mounting block (8), the top of the mounting block (8) is fixedly connected to a first mounting rod ( ). 9) An arc-shaped clamping block (10) is fixedly connected to the top of the first mounting rod (9), a second mounting rod (11) is fixedly connected to one side of the mounting block (8), a rectangular clamping block (12) is fixedly connected to one end of the second mounting rod (11), an adjustment component is provided at one end of the rotating rod (7), the adjustment component is used to drive the rotating rod (7) to rotate, a clamping component is provided inside the rectangular clamping block (12), a displacement component is provided at the bottom of the workbench (1), the displacement component is used to drive the mounting plate (6) to move.

2. The multi-stage workpiece positioning device for a CNC milling machine according to claim 1, characterized in that, The adjusting assembly includes a nut (13), which is threaded to the outside of the rotating rod (7). One end of the nut (13) abuts against one side of the mounting plate (6). One end of the rotating rod (7) has a groove (14), and a connecting block (15) is provided inside the groove (14). Two limiting blocks (16) are fixedly connected to one side of the mounting plate (6).

3. The multi-stage workpiece positioning device for a CNC milling machine according to claim 2, characterized in that, The angle between the two limiting blocks (16) is 90°.

4. The multi-stage workpiece positioning device for a CNC milling machine according to claim 1, characterized in that, The clamping assembly includes a pull rod (17), which is slidably connected inside the rectangular clamp (12). A clamping block (18) is fixedly connected to the bottom of the pull rod (17), and a spring (19) is provided on the outside of the pull rod (17).

5. A multi-stage workpiece positioning device for a CNC milling machine according to claim 1, characterized in that, The displacement assembly includes two fixing blocks (21), which are fixedly connected to the bottom of the workbench (1). The bottom of the mounting plate (6) extends to the bottom of the workbench (1) and is fixedly connected to a fixing plate (20). A lead screw (22) is rotatably connected to one side of the fixing block (21), and the outer side of the lead screw (22) is threadedly connected to the inside of the fixing plate (20).

6. A multi-stage workpiece positioning device for a CNC milling machine according to claim 5, characterized in that, One end of the lead screw (22) is fixedly connected to a turntable (23), and one end of the turntable (23) is rotatably connected to a handle (24).

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