Universal clamp of numerical control machine tool

Abstract

The utility model discloses a universal clamp of a numerical control machine tool, which comprises a clamp body, and further comprises a clamp assembly and a limiting loading pipe which are arranged on the clamp body in a sliding manner. According to the universal clamp of the numerical control machine tool, the limiting loading pipe and the carrier arranged on the limiting loading pipe are arranged to support the interior of the workpiece to be machined, workpiece deformation caused by too large force when the workpiece is clamped is avoided, the clamping stability is improved, and when the limiting loading pipe is not needed, the limiting loading pipe is not needed, and the workpiece is not needed to be clamped. And the first sliding block and the second threaded rod are matched to move to one side, so that the universality is high. And the clamp is installed and replaced by arranging an inserting groove and an inserting plate, meanwhile, the clamping height of the clamp can be controlled through a lifting sliding block, maintenance can be facilitated, and the applicability is high.

Description

Technical Field

[0001] This utility model relates to the field of CNC machining technology, and in particular to a general-purpose fixture for CNC machine tools. Background Technology

[0002] A CNC machine tool is a type of automated machine tool equipped with a program control system. This control system logically processes programs with control codes or other symbolic instructions, decodes them, represents them with coded numbers, and inputs them into the CNC device via an information carrier. After processing, the CNC device sends various control signals to control the machine tool's movements, automatically machining parts according to the shape and dimensions required by the drawings.

[0003] Traditional CNC machine tool fixtures are mostly designed specifically for a particular process on a workpiece. However, when the processing needs to be changed, the fixtures become unusable and need to be scrapped, requiring the replacement of the fixtures. This reduces the working efficiency of the CNC machine tool and makes subsequent maintenance difficult. When traditional CNC machine tools use fixtures to clamp some semi-finished tubular workpieces, the hollow structure of the tubular workpieces results in low clamping stability and workpiece deformation due to difficulty in controlling the force, affecting production quality. In addition, existing fixtures cannot clamp multiple parts simultaneously, impacting production efficiency. Utility Model Content

[0004] This utility model discloses a universal fixture for CNC machine tools. It studies and improves the existing structure and its shortcomings, and provides a universal fixture for CNC machine tools to achieve better practical value.

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

[0006] A universal fixture for CNC machine tools includes a fixture body, a fixture assembly and a limiting loading tube slidably disposed on the fixture body.

[0007] In some embodiments, the clamp body includes a base, a first slide rail and a slide groove are provided on the base, the clamp assembly is slidably connected to the first slide rail, the limiting loading tube is slidably connected to the slide groove, the limiting loading tube is hollow, the limiting loading tube has a load rack at both ends of its outer side, the top of the limiting loading tube is connected to a first electric telescopic rod, the first electric telescopic rod extends into the limiting loading tube and is connected to a connecting rod, the two ends of the connecting rod are respectively provided with support rods, one end of the support rod is connected to a limiting block, and the outer side of the support rod is provided with a compression spring.

[0008] In some embodiments, the clamp assembly includes a mounting plate slidably connected to the first slide rail, a lifting slider is provided in the mounting plate, one end of the lifting slider is connected to an adjusting block, the other end of the adjusting block is connected to a clamping plate, and a first threaded rod is provided at the end of the clamping plate near the limiting loading tube, and a clamp corresponding to the position of the load rack is connected to the end of the first threaded rod.

[0009] In some embodiments, the limiting block is arc-shaped, and the outer wall of the limiting block on one side of the arc shape has an anti-slip structure; the shelf is arc-shaped, and the outer wall of the shelf on one side of the arc shape has an anti-slip structure.

[0010] In some embodiments, the side of the adjusting block is provided with a plug-in groove, and the end of the clamp plate near the mounting plate is connected to a plug-in plate that mates with the plug-in groove.

[0011] In some embodiments, a second threaded rod is connected inside the chute, and a first slider is connected to the second threaded rod. The first slider is connected to the limiting loading tube.

[0012] In some embodiments, a third threaded rod is internally connected to the first slide rail, one end of which is driven to a drive motor disposed on the outer wall of the base, and a second threaded rod is connected to a second slider, which is connected to the mounting plate.

[0013] In some embodiments, one side of each of the two mounting plates has a side slot, and a limit screw is provided inside the side slot. One side of the adjusting block has a fixing screw hole, and the limit screw passes through the side slot and is threaded into the fixing screw hole.

[0014] In some embodiments, the clamping plate has a threaded groove inside, and the first threaded rod is connected to the threaded groove by a thread.

[0015] In some embodiments, a rubber layer is provided on one side of the clamp.

[0016] The universal fixture for CNC machine tools provided by this utility model has the following advantages:

[0017] 1. The universal fixture of this CNC machine tool supports the inside of the workpiece to be processed by setting a limit loading tube and a carrier set on the limit loading tube, so as to avoid excessive force when clamping the workpiece and causing deformation of the workpiece, thereby improving the stability of clamping. When the limit loading tube is not needed, it can be moved aside by the cooperation of the first slider and the second threaded rod, which makes it highly versatile.

[0018] 2. The universal fixture of this CNC machine tool is installed and replaced by setting up a plug-in slot and plug-in plate. At the same time, the clamping height of the fixture can be controlled by lifting slider, which facilitates maintenance and has strong applicability. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a universal fixture for CNC machine tools proposed in this utility model;

[0020] Figure 2 for Figure 1 A magnified view of a portion at point A shown;

[0021] Figure 3 for Figure 2 A magnified view of a portion at point B shown;

[0022] Figure 4 This is a cross-sectional view of a universal fixture for CNC machine tools proposed in this utility model;

[0023] Figure 5 This is a cross-sectional view of another embodiment of the limiting loading tube of a universal fixture for CNC machine tools proposed in this utility model;

[0024] Figure 6 for Figure 5 The diagram shows a cross-section of the limiting loading tube.

[0025] In the attached diagram: 1. Base; 11. First slide rail; 111. Third threaded rod; 112. Drive motor; 113. Second slider; 12. Slide groove; 121. Second threaded rod; 122. First slider; 14. Piston cylinder; 15. First piston; 16. Second support rod; 17. Limiting top block; 2. Mounting plate; 21. Lifting slider; 22. Adjusting block; 23. Side slot; 24. Limiting screw; 25. Insertion slot; 3. Clamping plate; 31. First threaded rod; 32. Threaded groove; 33. Insertion plate; 4. Clamp; 41. Rubber layer; 5. Limiting loading tube; 51. Carrier; 53. First electric telescopic rod; 54. Connecting rod; 55. Support rod; 56. Limiting block; 57. Compression spring; 6. Power pipe; 61. Oil tank; 62. Second piston; 63. Second electric telescopic rod. Detailed Implementation

[0026] 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.

[0027] Reference Figures 1 to 4 This is the first embodiment of a universal fixture for CNC machine tools according to the present invention. It includes a fixture body, a fixture assembly and a limiting loading tube 5 slidably disposed on the fixture body. The fixture body includes a base 1, a first slide rail 11 and a slide groove 12 disposed on the base 1, the fixture assembly being slidably connected on the first slide rail 11, and the limiting loading tube 5 being slidably connected on the slide groove 12.

[0028] Specifically, in some embodiments, the base 1 is rectangular, and the first slide rail 11 includes two slide rails, which are laterally symmetrically arranged on both sides of the top surface of the base 1, and the slide groove 12 is arranged in the middle of the two slide rails 11.

[0029] In some embodiments, the clamping assembly is slidably connected to the two first slide rails 11 respectively. The clamping assembly includes a mounting plate 2 slidably connected to the first slide rails 11. A slot is opened on one surface of the mounting plate 2, and a lifting slider 21 is arranged in the slot. The lifting slider 21 has an "I" shaped plate structure. The lifting slider 21 is used to control the clamping height of the clamp 4 and has strong applicability. One end of the lifting slider 21 is connected to an adjusting block 22, and the other end of the adjusting block 22 is connected to a clamping plate 3. A first threaded rod 31 is provided at the end of the clamping plate 3 near the limiting loading tube 5. The end of the first threaded rod 31 is connected to a clamp 4 corresponding to the position of the carrier 51.

[0030] Specifically, the mounting plate 2 and the clamping plate 3 are arranged longitudinally. Multiple first threaded rods 31 are spaced apart at the ends of the clamping plate 3 near the limiting loading tube 5. In some embodiments, the clamping plate 3 has internal threaded grooves 32, and the first threaded rods 31 are threadedly connected to the threaded grooves 32. Multiple first threaded grooves 32 are included. Meanwhile, the clamp 4 is arc-shaped and includes multiple clamps. Multiple first threaded rods 31 cooperate with multiple threaded grooves 32, making the clamp 4 easy to disassemble. This allows the clamp 4 to be suitable for workpieces of different sizes, eliminating the need for workers to customize new clamps and improving the working efficiency of the CNC machine tool. The mounting plate 3 provides a more stable clamping effect on the components, and multiple clamps 4 can simultaneously clamp multiple workpieces to be processed, improving processing efficiency. In other embodiments, the clamp 4 is square, rectangular, circular, irregular, or other shapes. The number of clamps 4, first threaded rods 31, and threaded grooves 32 is one or two.

[0031] In some embodiments, the limiting loading tube 5 is hollow and cylindrical. A carrier frame 51 is provided at both ends of the outer side of the limiting loading tube 5. The carrier frame 51 is arc-shaped, and the outer wall of the arc-shaped side of the carrier frame 51 has an anti-slip structure. The arc-shaped carrier frame 51 is respectively provided on both sides of the limiting loading tube 51 to facilitate the stable placement of semi-finished tubular workpieces on the limiting loading tube 5, providing internal support for the workpiece to be processed. A first electric telescopic rod 53 is connected to the top of the limiting loading tube 5. The first electric telescopic rod 53 extends into the limiting loading tube 5 and is connected to a connecting rod 54. The connecting rod extends longitudinally through the inside of the limiting loading tube 5. A first support rod 55 is provided at both ends of the connecting rod 54. A limiting block 56 is connected to one end of the first support rod 55, and a compression spring 57 is provided around the outer side of the first support rod 55. In some embodiments, limiting holes are respectively provided on both sides of the outer wall of the limiting loading tube 5, which intersect with a plurality of carriers 51. The shape and size of the limiting holes correspond to the shape and size of the limiting blocks 56. In use, the first electric telescopic rod 53 is activated to move downward, driving the connecting rod 54 to move downward, so that the first support rod 55 extends out of the limiting loading tube 5 along the limiting hole under the compression spring 57, thereby further clamping the workpiece to be processed loaded on the carrier 51. In some embodiments, the carrier 51, the first support rod 55, the limiting blocks 56, and the limiting holes include a plurality of components. When the limiting block 56 extends out of the limiting loading tube 5 through the limiting hole, the carrier 51 and the limiting block 56 are spaced apart, and the spacing and position correspond to the fixture 4.

[0032] In some embodiments, the limiting block 56 is arc-shaped, and the outer wall of the limiting block 56 on the arc-shaped side is an anti-slip structure. In other embodiments, the limiting block 56 and the carrier 51 are rectangular, square, circular, irregular, or other shapes, which can be adjusted according to the shape of the workpiece to be processed.

[0033] In some embodiments, the adjusting block 22 has a slot 25 on its side, and the end of the clamping plate 3 near the mounting plate 2 is connected to a slot 33 that mates with the slot 25. In some embodiments, the slot 25 is arc-shaped, and the slot 33 is also arc-shaped in some embodiments. In other embodiments, the slot 25 is U-shaped, T-shaped, or other shapes, and the slot 33 is designed to engage with the slot 25. The engagement of the slot 25 with the slot 33 allows the clamping plate 3 and the clamping fixture 4 to be detachably installed, facilitating maintenance and replacement. In some embodiments, the slide 12 is longitudinally arranged on two first slide rails 11. A second threaded rod 121 is connected inside the slide 12, and a first slider 122 is connected to the second threaded rod 121. The first slider 122 is connected to the limiting loading tube 5, and a fixing clip is provided at one end of the first slider 122. Several engaging parts that mate with the fixing clip are provided on the wall of one opposite end of the slide 12. Understandably, in some other embodiments, when large workpieces need to be processed, the fixture 4 can be directly removed, and it can be moved aside by the cooperation of the first slider 122 and the second threaded rod 121, and clamped and processed by the clamping plates 3 on both sides, thereby improving applicability.

[0034] like Figures 2 to 3 As shown, in some embodiments, a third threaded rod 111 is internally connected to the first slide rail 11. One end of the third threaded rod 111 is driven to a drive motor 112 disposed on the outer wall of the base 1. The third threaded rod 111 is connected to a second slider 113, which is connected to the mounting plate 2.

[0035] In some embodiments, the two mounting plates 2 have a side slot 23 on one side, and a limit screw 24 is provided inside the side slot 23. The adjusting block 22 has a fixing screw hole on one side, and the limit screw 24 passes through the side slot 23 and is threaded into the fixing screw hole.

[0036] In some embodiments, a rubber layer 41 is provided on one side of the clamp 4. Specifically, the rubber layer 41 has an anti-slip function, making the clamping of the component more stable.

[0037] Working principle: Before operation, the clamping plate 3 is installed on the mounting plate 2 by the cooperation of the connector 33 and the connector slot 25, so that it can be installed and replaced. The clamp 4 is loaded on the clamping plate 3 by the cooperation of the first threaded groove 32 and the first threaded rod 31. The limiting loading tube 5 is moved between the two first slide rails 11, and the workpiece to be processed is placed on the mounting rack 51.

[0038] During operation, the first electric telescopic rod 53 is controlled, and the connecting rod 54 is lowered through the output end of the first electric telescopic rod 53. The lowering of the connecting rod 54 causes the limiting block 56 on the first support rod 55 to extend out of the limiting loading tube 5 along the limiting hole, thereby supporting the inside of the workpiece to be processed and preventing workpiece deformation caused by excessive force when clamping the workpiece, thus improving the stability of clamping. At the same time, the two drive motors 112 drive the clamps 4 on both sides of the clamping plate 3 to move relative to each other, thereby further stabilizing the workpiece to be processed. Multiple clamps 4 are set on the clamping plate 3, which allows multiple sets of components to be clamped at the same time, improving production efficiency. The clamping height can also be controlled by adjusting the lifting slider 22, improving applicability. Moreover, when the workpiece to be processed is of other shapes and does not require the limiting loading tube 5, it can be moved aside by the first slider 122 and the second threaded rod 121, which has strong versatility.

[0039] After the work is completed, the output end of the first electric telescopic rod 53 is driven to move upward, the connecting rod 54 moves upward, and under the action of the compression spring 57, the limiting block 56 on the first support rod 55 extends into the limiting loading tube 5 along the limiting hole, and drives the two drive motors 112 to drive the clamps 4 on both sides of the clamping plate 3 to move away from the moving limiting loading tube 5, thereby releasing the workpiece after processing.

[0040] See also Figures 5 to 6This is another embodiment of the universal fixture for CNC machine tools. The difference from the first embodiment is that the limiting loading tube 5 is fixedly mounted on the base 1. The limiting loading tube 5 has a power tube 6 on one side perpendicular to the first slide rail 11, that is, a power tube 6 is vertically connected to the top of the limiting loading tube 5. The power tube 6 and the limiting loading tube 5 are connected to an oil tank 61. One side of the inner wall of the oil tank 61 is connected to the limiting loading tube 5. A piston cylinder 14 is fixedly mounted on the inner wall of the limiting loading tube 5. A first piston 15 is slidably connected to the inner wall of the piston cylinder 14. One end of the first piston 15 is connected to a second support rod 16. The second support rod 16 extends to the outside of the limiting loading tube 5 and is fixedly mounted with a limiting top block 17. The limiting top block 17 is spaced apart from the load rack 51 on the outside of the limiting loading tube 5. A second piston 62 is slidably connected to the inner wall of the upper end of the oil tank 61. A second electric telescopic rod 63 is connected to the upper end of the power tube 6 corresponding to the upper end of the second piston 62. The output end of the second electric telescopic rod 63 extends into the oil tank 61 and a second piston 62 is fixedly installed inside. The second piston 62 is located inside the power pipe 6, and can be driven to move by the output end of the second electric telescopic rod 63. The piston cylinder 14 is arranged in a cross shape on the inner wall of the limiting loading pipe 5, facilitating communication with the oil tank 61. The second support rod 16 is rectangular in shape, ensuring it moves in a fixed direction. The second support rod 16 is slidably connected to one end of the piston cylinder 14. The limiting top block 17 is arc-shaped, effectively contacting the inside of the workpiece. The outer wall of the limiting top block 17 on the arc-shaped side has an anti-slip structure. The oil tank 61 connects the limiting loading pipe 5 and the piston cylinder 14. The limiting loading pipe 5 is cylindrical in shape, with two clamps 4 positioned between one end. The limiting top block 17 and the carrier 51 are located between the two clamps 4, facilitating the clamps 4 to support the workpiece. Specifically, the piston cylinder 14, the first piston 15, the second support rod 16, and the limiting top block 17 each include multiple piston cylinders 14 spaced apart on the inner wall of the limiting loading tube 5, and their positions correspond to the positions of the clamp 4.

[0041] Working principle: Before operation, the clamping plate 3 is installed on the mounting plate 2 by the cooperation of the connector 33 and the connector slot 25, so that it can be installed and replaced. The clamp 4 is loaded on the clamping plate 3 by the cooperation of the first threaded groove 32 and the first threaded rod 31. The limiting loading tube 5 is moved between the two first slide rails 11, and the workpiece to be processed is placed on the mounting rack 51.

[0042] During operation, the second electric telescopic rod 63 is driven, and the output end of the second electric telescopic rod 63 pushes the second piston 62 to move closer to the limiting loading tube 5. The movement of the second piston 62 pushes the liquid inside the oil tank 61, thereby pushing the first piston 15 inside the piston cylinder 14 through the liquid flow inside the oil tank 61. The first piston 15 pushes the first support rod 16, and then the first support rod 16 pushes the limiting top block 17 to support the corresponding control workpiece. At this time, the carrier 51 can prevent the control workpiece from slipping. At the same time, the two drive motors 112 drive the clamps 4 on both sides of the clamping plate 3 to move relative to each other, thereby further stabilizing the workpiece to be processed. Multiple clamps 4 are provided on the clamping plate 3, so that multiple sets of components can be clamped at the same time.

[0043] After the work is completed, the output end of the second electric telescopic rod 63 is driven to move away from the limiting loading tube 5, causing the second piston 62 to move away from the limiting loading tube 5. This causes the liquid flow inside the oil tank 61 to push the first piston 15 inside the piston cylinder 14, causing the first piston 15 to push the first support rod 16 to move inward. Then, the first support rod 16 pushes the limiting top block 17 to reset and extend into the limiting loading tube 5. This drives the two drive motors 112 to drive the clamps 4 on both sides of the clamping plate 3 to move away from the moving limiting loading tube 5, thereby releasing the processed workpiece.

[0044] Any content not described in detail in this specification is prior art known to those skilled in the art.

[0045] 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 universal fixture for CNC machine tools, comprising a fixture body, characterized in that, It also includes a clamp assembly and a limiting loading tube (5) that are slidably disposed on the clamp body.

2. The universal fixture for CNC machine tools according to claim 1, characterized in that, The clamp body includes a base (1), on which a first slide rail (11) and a slide groove are provided. (12) The clamp assembly is slidably connected to the first slide rail (11), and the limiting loading tube (5) is slidably connected to the slide groove (12). The limiting loading tube (5) is hollow. The two outer ends of the limiting loading tube (5) are provided with a load rack (51). The top of the limiting loading tube (5) is connected with a first electric telescopic rod (53). The first electric telescopic rod (53) extends into the limiting loading tube (5) and is connected with a connecting rod (54). The two ends of the connecting rod (54) are respectively provided with support rods (55). One end of the support rod (55) is connected with a limiting block (56). The outer side of the support rod (55) is provided with a compression spring (57).

3. The universal fixture for CNC machine tools according to claim 2, characterized in that, The clamp assembly includes a mounting plate (2) slidably connected to the first slide rail (11), a lifting slider (21) is provided in the mounting plate (2), an adjusting block (22) is connected to one end of the lifting slider (21), a clamping plate (3) is connected to the other end of the adjusting block (22), a first threaded rod (31) is provided at the end of the clamping plate (3) near the end of the limiting loading tube (5), and a clamp (4) corresponding to the position of the load rack (51) is connected to the end of the first threaded rod (31).

4. The universal fixture for CNC machine tools according to claim 2, characterized in that, The limiting block (56) is arc-shaped, and the outer wall of the limiting block (56) on one side of the arc shape is an anti-slip knot. The structure of the rack (51) is arc-shaped, and the outer wall of the rack (51) on the arc-shaped side is an anti-slip structure.

5. The universal fixture for CNC machine tools according to claim 3, characterized in that, The adjustment block (22) has a plug-in groove (25) on its side, and the end of the clamp (3) near the mounting plate (2) is connected to a plug-in plate (33) that mates with the plug-in groove (25).

6. The universal fixture for CNC machine tools according to claim 3, characterized in that, The groove (12) is connected to a second threaded rod (121), and a first slider (122) is connected to the second threaded rod (121). The first slider (122) is connected to the limiting loading tube (5).

7. The universal fixture for CNC machine tools according to claim 6, characterized in that, The first slide rail (11) is internally connected to a third threaded rod (111), one end of which is driven to be connected to a drive motor (112) disposed on the outer wall of the base (1). The second threaded rod (121) is connected to a second slider (113), which is connected to the mounting plate (2).

8. The universal fixture for CNC machine tools according to claim 3, characterized in that, The two mounting plates (2) have a side slot (23) on one side, and a limit screw (24) is provided inside the side slot (23). The adjusting block (22) has a fixing screw hole on one side, and the limit screw (24) passes through the side slot (23) and is threaded into the fixing screw hole.

9. The universal fixture for CNC machine tools according to claim 3, characterized in that, The clamping plate (3) has a threaded groove (32) inside, and the first threaded rod (31) is connected to the threaded groove. (32) By threaded connection.

10. The universal fixture for CNC machine tools according to claim 3, characterized in that, The clamp (4) has a rubber layer (41) on one side.

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