Numerical control machine tool positioning tool

Abstract

The utility model relates to the technical field of numerical control cutting, in particular to a positioning tool of a numerical control machine tool. Comprising a vertical plate, supporting plates are fixed to the left side and the right side of the front end of the vertical plate, inserting plates are slidably arranged in the supporting plates, driving units for driving the inserting plates to move are arranged on the supporting plates, cushion blocks are fixed to the upper ends of the opposite ends of the two inserting plates, a transverse sliding groove is formed in the front side of the vertical plate, a sliding block is slidably arranged in the sliding groove, and a driving assembly is arranged on the vertical plate. A connecting plate is fixed to the sliding block, a supporting block is fixed to the connecting plate, a positive and negative lead screw is rotationally connected to the supporting block, clamping plates are in threaded connection with the left side and the right side of the positive and negative lead screw and slidably connected with the vertical plate, and clamping units are arranged at the opposite ends of the two clamping plates in the vertical direction. And by arranging the inserting plate and the cushion block, the positioning tool can be suitable for clamping workpieces of different sizes.

Description

Technical Field

[0001] This utility model relates to the field of CNC cutting technology, specifically to a CNC machine tool positioning fixture. Background Technology

[0002] With the continuous development and progress of industrial technology, the precision machining and processing of workpieces has become the future trend of workpiece development. Wire EDM machines are devices that use an electrode wire to generate an electric spark after being energized, thereby using the instantaneous high temperature of the electric spark to cut the workpiece. Fast wire EDM machines are wire EDM machines in which the electrode wire makes a high-speed reciprocating motion with a wire feed speed of 8m / s to 10m / s. Fast wire EDM machines are often used in the manufacture of large pumps, such as large pumps used in ships, oil fields and power plants.

[0003] During the installation and use of online cutting machines, cutting tests on metal test blocks are required. During these tests, auxiliary positioning components need to be clamped and positioned to maintain stability during the cutting process. Using a lifting mechanism to clamp the positioning components is a current technology that facilitates the cutting process. However, in existing technologies, auxiliary positioning fixtures are used to clamp and limit the positioning components, maintaining stability during the cutting process. Once the positioning components are installed, their cutting position cannot be adaptively adjusted, resulting in a fixed cutting point that cannot meet the user's needs for testing at different points.

[0004] To address the aforementioned technical problems, patent document CN216990241U discloses an auxiliary positioning fixture for a wire EDM CNC machine tool, comprising: a support with an adjustment cavity, a cutting hole, and a movable groove; a positioning component installed inside the support; a telescopic component with its bottom fixedly mounted to the inner wall of the adjustment cavity, and a linkage plate fixedly mounted at its output end, with a clamping frame fixedly mounted on one side of the linkage plate; a push handwheel with its surface mounted on the outer side of the support, and a moving lead screw mounted on its shaft end, with a linkage slider threaded onto its surface; and a linkage frame with one side fixedly mounted to the outer surface of the linkage slider, and a push plate fixedly mounted on one side of the linkage frame. During installation, the telescopic component is activated first, causing it to move the linkage plate upwards, which in turn causes the clamping frame to disengage from the adjustment cavity. Install the positioning component on the inner side of the push plate. After installation, activate the telescopic component again. The telescopic component moves the linkage plate downwards, which in turn moves the clamping frame downwards and presses it tightly against the surface of the positioning component. When it is necessary to adjust the cutting position of the positioning component, hold the push handwheel and manually rotate it. As the push handwheel rotates, it drives the moving lead screw to rotate synchronously. As the moving lead screw rotates, it drives the linkage slider to move horizontally. The linkage slider drives the push plate to move horizontally through the linkage frame. As the push plate moves horizontally, it pushes the positioning component to move horizontally and adjust accordingly, thus adapting to cutting and processing at different positions of the positioning component.

[0005] To facilitate the vertical clamping of the positioning component, this positioning fixture is equipped with a clamping frame, a linkage plate, and a telescopic component, resulting in a relatively long fixture. The wire EDM machine requires the use of cutting fluid, which tends to accumulate within the support frame. The fixture has a small cutting range, making it suitable for positioning components of varying sizes. Utility Model Content

[0006] The main purpose of this utility model is to provide a positioning fixture that is compact in structure, can avoid the accumulation of cutting fluid, has a large cutting range, and can be applied to workpieces of different sizes.

[0007] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0008] A positioning fixture for a CNC machine tool includes a vertical plate. Support plates are fixed to the left and right sides of the front end of the vertical plate. Insert plates are slidably disposed within each support plate. A drive unit is provided on the support plate to drive the insert plates. The opposite ends of the two insert plates are located outside the support plate. A pad is fixed to the upper end of each opposite end of the two insert plates, with the upper end of the pad flush with the upper end of the support plate. A support frame is fixed to the insert plate portion below the pad, and the support frame is slidably connected to the lower end of the pad. A transverse groove is opened on the front side of the vertical plate, and a slider is slidably disposed within the groove. A drive assembly is provided on the vertical plate, capable of driving the slider to move within the groove. A connecting plate is fixed to the slider, and a support block is fixed to the connecting plate. Positive and negative lead screws are rotatably connected to the support block. The positive and negative lead screws are arranged transversely, and clamping plates are threaded to the left and right sides of the positive and negative lead screws. The clamping plates are slidably connected to the vertical plate. A clamping unit is provided in the vertical direction at the opposite ends of the two clamping plates.

[0009] Specifically, a slot is provided in the transverse direction of the tray, and the insert plate is slidably inserted into the slot.

[0010] Specifically, the drive unit includes a lower screw that is rotatably disposed in a slot. The lower screw is arranged laterally and is threadedly connected to a plate on one side of it. A lower motor is fixed on the support plate, and the output shaft of the lower motor is concentrically fixedly connected to the lower screw.

[0011] Specifically, the support frame includes an inclined support rod, the upper end of which is fixedly connected to the lower end of the insert plate. A vertical connecting rod is fixed to the lower end of the support rod, and a guide block is fixed to the upper end of the connecting rod. A transverse guide groove is provided at the lower end of the support plate, and the guide block is slidably engaged in the guide groove.

[0012] Specifically, the drive assembly includes an upper screw that is rotatably mounted on the vertical plate. The upper screw is horizontally positioned and passes through the slider. The upper screw is threadedly connected to the slider, and a handwheel is concentrically fixed on the upper screw.

[0013] Specifically, the positive and negative lead screws are equipped with handles.

[0014] Specifically, the clamping unit includes a vertical groove formed on the clamping plate, a side screw rotatably connected in the vertical groove, the side screw being vertically arranged, an upper motor fixed at the upper end of the clamping plate, the output shaft of the upper motor being concentrically fixedly connected to the upper end of the side screw, and a pressure plate slidably arranged in the vertical groove, the pressure plate being threadedly connected to the side screw.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. By setting up insert plates and pads, when small workpieces need to be cut, the two insert plates move relative to each other, and the pads can support the small workpieces. When large workpieces need to be cut, the two insert plates move away from each other, and the pads and support plates can support the large workpieces together. Therefore, this positioning fixture is suitable for clamping workpieces of different sizes.

[0017] 2. The two inserts can move independently, making them suitable for supporting irregular workpieces.

[0018] 3. By rotating the upper screw, the two clamping plates can move simultaneously in the lateral direction, which can easily adjust the position of the clamped workpiece.

[0019] 4. By incorporating clamping units on the clamping plates, this positioning fixture achieves a compact structure. The pressure plates can compress the workpiece from top to bottom, resulting in good stability after clamping. The two pressure plates can move independently, facilitating the clamping of irregular workpieces. The pressure plates compress the workpiece edges, increasing the workpiece's cutable area.

[0020] 5. The two support plates of this positioning workpiece are fixed on the left and right sides of the front end of the vertical plate. The cutting fluid that flows onto the workpiece or support plate during the workpiece cutting process can flow downward in a timely manner, which can prevent the cutting fluid from accumulating on the workpiece or support plate.

[0021] 6. By setting up a support frame, the support frame moves along with the two insert plates during their relative movement, and the support frame can support the insert plates, which can further improve the stability of the insert plates. Attached Figure Description

[0022] Figure 1 Top view of this positioning fixture

[0023] Figure 2 This is the front view of the positioning fixture.

[0024] Figure 3 This is a side view of the positioning fixture.

[0025] Figure 4 This is a 3D view of the positioning fixture.

[0026] Figure 5 This is a cross-sectional view of the tray and insert plate.

[0027] The components in the attached diagram are named as follows: 1. Vertical plate, 2. Support plate, 3. Insert plate, 4. Pad block, 5. Lower motor, 6. Clamping plate, 7. Pressure plate, 8. Upper motor, 9. Positive and negative lead screws, 10. Support block, 11. Connecting plate, 12. Slider, 13. Upper screw, 14. Handwheel, 15. Support rod, 16. Connecting rod, 17. Handle, 18. Slide groove, 19. Guide block, 20. Guide groove, 21. Vertical groove, 22. Side screw, 23. Lower screw, 24. Slot. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0029] Example 1: Refer to Figures 1-5 As shown, a CNC machine tool positioning fixture includes a vertical plate 1, with support plates 2 fixed on both the left and right sides of the front end of the vertical plate 1, and insert plates 3 slidably disposed within each support plate 2. Specifically, slots 24 are formed in the transverse direction within the support plates 2, and the insert plates 3 are slidably inserted into the slots 24.

[0030] The tray 2 is equipped with a drive unit that drives the insert plate 3 to move.

[0031] The drive unit includes a lower screw 23 rotatably disposed within a slot 24. The lower screw 23 is horizontally positioned and threadedly connected to a plate 3 on one side of it. A lower motor 5 is fixed on the support plate 2, and the output shaft of the lower motor 5 is concentrically and fixedly connected to the lower screw 23. When the lower motor 5 is started, it drives the lower screw 23 to rotate, allowing the plate 3 to move within the slot 24 of the support plate 2.

[0032] The opposite ends of the two insert plates 3 are located on the outside of the support plate 2, and the upper ends of the opposite ends of the two insert plates 3 are fixed with pads 4, and the upper ends of the pads 4 are flush with the upper ends of the support plate 2.

[0033] A horizontal groove 18 is provided on the front side of the upright plate 1. A slider 12 is slidably disposed in the groove 18. A drive assembly is provided on the upright plate 1. The drive assembly can drive the slider 12 to move in the groove 18.

[0034] The driving assembly includes an upper screw 13 rotatably mounted on the vertical plate 1. The upper screw 13 is horizontally positioned and passes through the slider 12. The upper screw 13 is threadedly connected to the slider 12. A handwheel 14 is concentrically fixed on the upper screw 13. Rotating the handwheel 14 causes the upper screw 13 to rotate, allowing the slider 12 to move within the slide groove 18.

[0035] A connecting plate 11 is fixed on the slider 12, and a support block 10 is fixed on the connecting plate 11. A positive and negative screw 9 is rotatably connected to the support block 10. The positive and negative screw 9 is arranged horizontally, and a clamping plate 6 is threadedly connected to both the left and right sides of the positive and negative screw 9. The clamping plate 6 is slidably connected to the vertical plate 1.

[0036] As the slider 12 moves within the slide groove 18, the support block 10, connecting plate 11, positive and negative lead screws 9, and two clamping plates 6 move along with the slider 12.

[0037] The lead screw 9 is provided with a handle 17. The handle 17 facilitates the rotation of the lead screw 9.

[0038] Clamping units are provided in the vertical direction at the opposite ends of the two clamping plates 6.

[0039] The clamping unit includes a vertical groove 21 formed on the clamping plate 6, a side screw 22 rotatably connected in the vertical groove 21, the side screw 22 is vertically arranged, an upper motor 8 is fixed at the upper end of the clamping plate 6, the output shaft of the upper motor 8 is concentrically fixedly connected to the upper end of the side screw 22, a pressure plate 7 is slidably arranged in the vertical groove 21, and the pressure plate 7 is threadedly connected to the side screw 22.

[0040] When clamping the workpiece, if it is necessary to cut the small workpiece, the two insert plates 3 move relative to each other, and the distance between the two insert plates 3 is reduced. The pad block 4 can be used to support the small workpiece.

[0041] When large workpieces need to be cut, the two insert plates 3 are moved away from each other, and the pad block 4 and the support plate 2 can support the large workpiece together. Therefore, this positioning fixture can be used to clamp workpieces of different sizes.

[0042] The two insert plates 3 can move independently, making them suitable for supporting irregular workpieces.

[0043] After supporting the workpiece, the upper screw 13 is rotated via handwheel 14 to adjust the position of the two clamping plates 6, so that the workpiece is centered between the two clamping plates 6. Then, the forward and reverse screws 9 are rotated via handle 17 to bring the two clamping plates 6 closer together and clamp the workpiece. After clamping the workpiece, the upper screw 13 is rotated via handwheel 14 to adjust the position of the two clamping plates 6 and the workpiece in the lateral direction, so that the cutting point of the workpiece corresponds to the cutting wire.

[0044] Then start the upper motor 8, which drives the side screw 22 to rotate. During the rotation of the side screw 22, the pressure plate 7 moves downward to squeeze the workpiece, thereby stabilizing the workpiece.

[0045] By setting clamping units on clamping plate 6, this positioning fixture structure becomes compact. Pressure plate 7 can press the workpiece from top to bottom, resulting in good stability after clamping. The two pressure plates 7 can move independently, facilitating the clamping of irregular workpieces. Pressure plate 7 pressing the workpiece edges increases the workpiece's cutable area.

[0046] The two support plates 2 of this positioning workpiece are fixed on the left and right sides of the front end of the upright plate 1. The cutting fluid that flows onto the workpiece or support plate 2 during the workpiece cutting process can flow downward in time, which can prevent the cutting fluid from accumulating on the workpiece or support plate 2.

[0047] Example 2: Based on Example 1, referring to... Figures 2-5As shown, a support frame is fixed on the insert plate 3 below the pad 4. The support frame is slidably connected to the lower end of the pad 4. The support frame includes an inclined support rod 15. The upper end of the support rod 15 is fixedly connected to the lower end of the insert plate 3. A vertical connecting rod 16 is fixed to the lower end of the support rod 15. A guide block 19 is fixed to the upper end of the connecting rod 16. A horizontal guide groove 20 is opened at the lower end of the support plate 2. The guide block 19 is slidably engaged in the guide groove 20.

[0048] By setting up a support frame, the support frame moves along with the two insert plates 3 during their relative movement. The support frame can support the insert plates 3, and the stability of the insert plates 3 can be further improved when the two insert plates 3 come close to each other.

[0049] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A numerical control machine tool positioning tool, comprising a vertical plate (1), and a supporting plate (2) fixed on the left and right sides of the front end of the vertical plate (1), characterized in that, The plate (2) is slidably provided with the plug-in plate (3), the plate (2) is provided with a driving unit for driving the plug-in plate (3) to move, the opposite ends of the two plug-in plates (3) are located outside the plate (2), the upper ends of the opposite ends of the two plug-in plates (3) are fixedly provided with the cushion block (4), the upper end of the cushion block (4) is flush with the upper end of the plate (2), the part of the plug-in plate (3) below the cushion block (4) is fixedly provided with the support frame, the support frame is slidably connected with the lower end of the cushion block (4), the front side of the vertical plate (1) is provided with a horizontal sliding groove (18), the sliding groove (18) is slidably provided with the sliding block (12), the vertical plate (1) is provided with a driving assembly, the driving assembly can drive the sliding block (12) to move in the sliding groove (18), the sliding block (12) is fixedly provided with the connecting plate (11), the connecting plate (11) is fixedly provided with the support block (10), the support block (10) is rotatably connected with the reversible lead screw (9), the reversible lead screw (9) is horizontally arranged, the reversible lead screw (9) is threadedly connected with the clamping plate (6) on the left and right sides, the clamping plate (6) is slidably connected with the vertical plate (1), and the opposite ends of the two clamping plates (6) are provided with clamping units in the vertical direction.

2. The positioning tooling apparatus for a CNC machine according to claim 1, wherein, The plate (2) is slidably provided with the plug-in plate (3), the plate (2) is provided with a driving unit for driving the plug-in plate (3) to move, the opposite ends of the two plug-in plates (3) are located outside the plate (2), the upper ends of the opposite ends of the two plug-in plates (3) are fixedly provided with the cushion block (4), the upper end of the cushion block (4) is flush with the upper end of the plate (2), the part of the plug-in plate (3) below the cushion block (4) is fixedly provided with the support frame, the support frame is slidably connected with the lower end of the cushion block (4), the front side of the vertical plate (1) is provided with a horizontal sliding groove (18), the sliding groove (18) is slidably provided with the sliding block (12), the vertical plate (1) is provided with a driving assembly, the driving assembly can drive the sliding block (12) to move in the sliding groove (18), the sliding block (12) is fixedly provided with the connecting plate (11), the connecting plate (11) is fixedly provided with the support block (10), the support block (10) is rotatably connected with the reversible lead screw (9), the reversible lead screw (9) is horizontally arranged, the reversible lead screw (9) is threadedly connected with the clamping plate (6) on the left and right sides, the clamping plate (6) is slidably connected with the vertical plate (1), and the opposite ends of the two clamping plates (6) are provided with clamping units in the vertical direction.

3. The positioning tooling apparatus for a CNC machine according to claim 2, wherein, The plate (2) is slidably provided with the plug-in plate (3), the plate (2) is provided with a driving unit for driving the plug-in plate (3) to move, the opposite ends of the two plug-in plates (3) are located outside the plate (2), the upper ends of the opposite ends of the two plug-in plates (3) are fixedly provided with the cushion block (4), the upper end of the cushion block (4) is flush with the upper end of the plate (2), the part of the plug-in plate (3) below the cushion block (4) is fixedly provided with the support frame, the support frame is slidably connected with the lower end of the cushion block (4), the front side of the vertical plate (1) is provided with a horizontal sliding groove (18), the sliding groove (18) is slidably provided with the sliding block (12), the vertical plate (1) is provided with a driving assembly, the driving assembly can drive the sliding block (12) to move in the sliding groove (18), the sliding block (12) is fixedly provided with the connecting plate (11), the connecting plate (11) is fixedly provided with the support block (10), the support block (10) is rotatably connected with the reversible lead screw (9), the reversible lead screw (9) is horizontally arranged, the reversible lead screw (9) is threadedly connected with the clamping plate (6) on the left and right sides, the clamping plate (6) is slidably connected with the vertical plate (1), and the opposite ends of the two clamping plates (6) are provided with clamping units in the vertical direction.

4. The positioning tooling apparatus for a CNC machine as set forth in claim 1, wherein, The plate (2) is slidably provided with the plug-in plate (3), the plate (2) is provided with a driving unit for driving the plug-in plate (3) to move, the opposite ends of the two plug-in plates (3) are located outside the plate (2), the upper ends of the opposite ends of the two plug-in plates (3) are fixedly provided with the cushion block (4), the upper end of the cushion block (4) is flush with the upper end of the plate (2), the part of the plug-in plate (3) below the cushion block (4) is fixedly provided with the support frame, the support frame is slidably connected with the lower end of the cushion block (4), the front side of the vertical plate (1) is provided with a horizontal sliding groove (18), the sliding groove (18) is slidably provided with the sliding block (12), the vertical plate (1) is provided with a driving assembly, the driving assembly can drive the sliding block (12) to move in the sliding groove (18), the sliding block (12) is fixedly provided with the connecting plate (11), the connecting plate (11) is fixedly provided with the support block (10), the support block (10) is rotatably connected with the reversible lead screw (9), the reversible lead screw (9) is horizontally arranged, the reversible lead screw (9) is threadedly connected with the clamping plate (6) on the left and right sides, the clamping plate (6) is slidably connected with the vertical plate (1), and the opposite ends of the two clamping plates (6) are provided with clamping units in the vertical direction.

5. The positioning tooling apparatus for a CNC machine as set forth in claim 1, wherein, ​ 6. The positioning fixture for CNC machine according to claim 1, wherein, ​ 7. The positioning fixture for CNC machine according to claim 1, characterized in that, ​

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