Safety clamp for CNC (computer numerical control) machine tool

Abstract

The utility model provides a CNC (computer numerical control) machine tool safety clamp, which relates to the technical field of numerical control machine tools and comprises a mounting frame, moving plates are arranged on two sides in the mounting frame, a driving structure used for driving the two moving plates to move face to face or oppositely is arranged in the mounting frame, and fixing plates are fixed at the top ends of the two moving plates. The clamping columns are driven to move by pulling the pulling plates and driving the driving plates to move, so that the clamping columns move out of the clamping grooves formed in the outer walls of the clamping blocks, at the moment, the clamping columns do not limit the clamping blocks any more, a user can directly slide out of the clamping blocks, and the clamping blocks are replaced and installed according to the shape of a workpiece needing to be clamped actually; when the clamping blocks are installed, the clamping columns are shrunk into the inner cavities, at the moment, the corresponding clamping blocks are inserted into the connecting blocks through the inserting grooves, the pulling plates are loosened, the clamping columns are driven to move forwards through the pushing force of the springs, and therefore the clamping columns are driven to enter the clamping grooves formed in the outer walls of the clamping blocks, the clamping blocks are limited, and the effect of installing the clamping blocks is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical control machine tools, in particular to a safety clamp for CNC numerical control machine tools. Background Art

[0002] With the development of manufacturing industry, the production and processing process is developing towards high efficiency and automation. CNC machine tools have the characteristics of high precision and high efficiency, and can realize complex workpiece processing. In order to ensure the processing effect and operation safety, safety clamps came into being.

[0003] In the prior art, during use, an existing safety clamp for CNC machine tools cannot arbitrarily replace the clamping block according to actual processing requirements, resulting in greater limitations on the use of the clamp and poor practicality. Utility Model Content

[0004] The utility model mainly provides a CNC machine tool safety clamp which can arbitrarily and conveniently replace different clamping blocks so as to be able to be adjusted according to actual use conditions.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a CNC machine tool safety clamp, comprising a mounting frame, movable plates are arranged on both sides of the interior of the mounting frame, a driving structure for driving the two movable plates to move toward or oppositely is arranged in the mounting frame, the top ends of the two movable plates are fixed with fixed plates, the opposite ends of the two fixed plates are installed with second motors, the output ends of the two second motors are fixed with connecting plates, the opposite ends of the two connecting plates are fixed with connecting blocks, the opposite ends of the two connecting blocks are plugged with clamping blocks, the opposite ends of the two connecting blocks are provided with slots matching the clamping blocks, a snap structure for installing and disassembling the clamping blocks is arranged in the connecting block, a bottom plate is fixed on the inner wall of the mounting frame, a telescopic rod is installed on the top of the bottom plate, and the output end of the telescopic rod is fixed with a placement plate.

[0006] Preferably, the driving structure includes a first motor arranged at one end of the mounting frame, the output end of the first motor passes through one side of the mounting frame and fixes the bidirectional screw, the two movable plates are respectively threadedly connected to the two ends of the outer wall of the bidirectional screw, and the other ends of the two movable plates are slidably connected to the limit column together, and the operation of the first motor drives the bidirectional screw to rotate, so that the two movable plates move toward each other under the limit of the limit column, thereby driving the two clamping blocks to move toward each other, thereby clamping and fixing the workpiece.

[0007] Preferably, the buckle structure includes an inner cavity opened in the connecting block and located on the inner wall of the slot, a spring is fixed on the inner wall of the inner cavity, a clamping column is fixed at one end of the spring, an end of the clamping column away from the spring passes through the inner wall of the slot and is arranged in the clamping block, and a clamping groove matching the clamping column is opened on the outer wall of the clamping block, and the clamping column is driven to move forward by the thrust of the spring, thereby driving the clamping column to enter the clamping groove opened on the outer wall of the clamping block, thereby limiting the clamping block and achieving the effect of installing the clamping block.

[0008] Preferably, a support plate is fixed on the outer wall of the mounting frame, the first motor is installed on the top of the support plate, the end of the bidirectional screw away from the first motor is rotatably connected to the mounting frame, and both ends of the limit column are fixed to the mounting frame. Through the setting of the support plate, the first motor has a support point, making its operation more stable.

[0009] Preferably, driving plates are fixed at both ends of the clamping column, and one end of the two driving plates passes through the outer wall of the connecting block and fixes the pulling plate. Moving grooves matching the driving plates are provided on both sides of the inner wall of the inner cavity. By pulling the pulling plate, the driving plate is driven to move, thereby driving the clamping column to move out of the slot provided on the outer wall of the clamping block. At this time, the clamping column no longer limits the clamping block, and the user can directly slide out the clamping block to replace it.

[0010] Preferably, mounting plates are fixed at the four corners of the mounting frame, mounting holes are provided in the four mounting plates, guide blocks are fixed on the outer walls of the two clamping blocks, guide grooves matching the guide blocks are provided on the inner wall of the slot in the connecting block, stabilizing plates are fixed on both sides of the second motor at one end of the connecting plate facing the fixed plate, and stabilizing grooves matching the stabilizing plates are provided on the outer side of the second motor at one end of the fixed plate facing the connecting plate. The device as a whole can be installed on a CNC machine tool through the arrangement of the mounting holes and the mounting plates, and the connecting plate can be supported through the arrangement of the stabilizing plate and the stabilizing groove, thereby avoiding the second motor supporting the whole and becoming unstable.

[0011] Compared with the prior art, the advantages and positive effects of the utility model are:

[0012] The clamping block can be installed by pulling the two pull plates together and then moving the clamping column forward to move the clamping column out of the clamping groove on the outer wall of the clamping block. The clamping block can be limited to the position by the clamping column, and the clamping block can be installed by arbitrarily replacing the clamping block according to the shape of the workpiece to be clamped. During installation, the two pull plates are first pulled to shrink the clamping column into the inner cavity. At this time, the corresponding clamping block is inserted into the connecting block through the slot, and the pull plate is released. The clamping column is driven to move forward by the thrust of the spring, thereby driving the clamping column to enter the clamping groove on the outer wall of the clamping block, limiting the clamping block, and achieving the effect of installing the clamping block. This device can arbitrarily replace the clamping block corresponding to the workpiece shape to be clamped, and is more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A three-dimensional diagram of a safety fixture for a CNC machine tool is proposed for the utility model;

[0014] Figure 2 A schematic diagram of a driving structure of a safety fixture for a CNC machine tool is proposed for the utility model;

[0015] Figure 3 A cross-sectional view of a safety fixture for a CNC machine tool is proposed for the utility model;

[0016] Figure 4 The utility model provides a schematic diagram of a buckle structure of a safety clamp for a CNC machine tool.

[0017] Legend: 1. Mounting frame; 2. Mounting plate; 3. Mounting hole; 4. Moving plate; 5. Driving structure; 501. First motor; 502. Bidirectional screw; 503. Limiting column; 6. Support plate; 7. Fixed plate; 8. Second motor; 9. Connecting plate; 10. Stabilizing plate; 11. Stabilizing groove; 12. Connecting block; 13. Clamping block; 14. Buckle structure; 1401. Inner cavity; 1402. Spring; 1403. Clamping column; 1404. Clamping groove; 15. Driving plate; 16. Pull plate; 17. Moving groove; 18. Slot; 19. Guide groove; 20. Bottom plate; 21. Telescopic rod; 22. Placement plate; 23. Guide block. DETAILED DESCRIPTION

[0018] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0019] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0020] See also Figure 1-Figure 4 The utility model provides a technical solution: a CNC machine tool safety clamp, including a mounting frame 1, movable plates 4 are arranged on both sides of the interior of the mounting frame 1, a driving structure 5 for driving the two movable plates 4 to move toward or oppositely is arranged in the mounting frame 1, a fixed plate 7 is fixed to the top of the two movable plates 4, a second motor 8 is installed at the opposite ends of the two fixed plates 7, a connecting plate 9 is fixed to the output ends of the two second motors 8, a connecting block 12 is fixed to the opposite ends of the two connecting plates 9, a clamping block 13 is plugged into the opposite ends of the two connecting blocks 12, a slot 18 matching the clamping block 13 is provided at the opposite ends of the two connecting blocks 12, a buckle structure 14 for installing and disassembling the clamping block 13 is arranged in the connecting block 12, and the inner wall of the mounting frame 1 A base plate 20 is fixed on the top, a telescopic rod 21 is installed on the top of the base plate 20, and a placement plate 22 is fixed at the output end of the telescopic rod 21. First, the workpiece or other items that need to be clamped are placed on the placement plate 22, and the clamping height is adjusted by the operation of the telescopic rod 21. After adjustment, the two movable plates 4 can be driven to move toward each other through the operation of the driving structure 5, thereby driving the two clamping blocks 13 to move toward each other, and the workpiece is clamped and fixed. Through the operation of the two second motors 8, the two clamping blocks 13 installed in the two connecting blocks 12 can be driven to rotate synchronously, thereby achieving the effect of adjusting the clamping angle. Through the setting of the snap structure 14, the device can arbitrarily replace the corresponding clamping block 13 according to the actual shape of the workpiece to be clamped, which is more practical.

[0021] like Figure 1-Figure 4 As shown, the driving structure 5 includes a first motor 501 arranged at one end of the mounting frame 1, the output end of the first motor 501 passes through one side of the mounting frame 1 and fixes the bidirectional screw 502, the two movable plates 4 are respectively threadedly connected to the two ends of the outer wall of the bidirectional screw 502, and the other ends of the two movable plates 4 are slidably connected to the limiting column 503 together. Through the operation of the first motor 501, the bidirectional screw 502 is driven to rotate, so that the two movable plates 4 move toward each other under the limit of the limiting column 503, thereby driving the two clamping blocks 13 to move toward each other, so as to clamp and fix the workpiece.

[0022] like Figure 1-Figure 4As shown, the buckle structure 14 includes an inner cavity 1401 opened in the connecting block 12 and located on the inner wall of the slot 18, a spring 1402 is fixed on the inner wall of the inner cavity 1401, one end of the spring 1402 is fixed with a clamping column 1403, one end of the clamping column 1403 away from the spring 1402 passes through the inner wall of the slot 18 and is arranged in the clamping block 13, and a clamping groove 1404 matching the clamping column 1403 is opened on the outer wall of the clamping block 13. The thrust of the spring 1402 drives the clamping column 1403 to move forward, thereby driving the clamping column 1403 to enter the clamping groove 1404 opened on the outer wall of the clamping block 13, limiting the clamping block 13, thereby achieving the effect of installing the clamping block 13.

[0023] like Figure 1-Figure 4 As shown, a support plate 6 is fixed on the outer wall of the mounting frame 1, and a first motor 501 is installed on the top of the support plate 6. An end of the bidirectional screw 502 away from the first motor 501 is rotatably connected to the mounting frame 1, and both ends of the limit column 503 are fixed to the mounting frame 1. Through the setting of the support plate 6, the first motor 501 has a support point, making its operation more stable.

[0024] like Figure 1-Figure 4 As shown, both ends of the clamping column 1403 are fixed with driving plates 15, one end of the two driving plates 15 penetrates the outer wall of the connecting block 12 and fixes the pulling plate 16, and both sides of the inner wall of the inner cavity 1401 are provided with movable grooves 17 matching the driving plates 15. By pulling the pulling plate 16, the driving plate 15 is driven to move, thereby driving the clamping column 1403 to move, so that the clamping column 1403 moves out of the clamping groove 1404 provided on the outer wall of the clamping block 13. At this time, the clamping column 1403 no longer limits the clamping block 13, and the user can directly slide out the clamping block 13 to replace it.

[0025] like Figure 1-Figure 4 As shown, mounting plates 2 are fixed at the four corners of the mounting frame 1, mounting holes 3 are provided in the four mounting plates 2, guide blocks 23 are fixed on the outer walls of the two clamping blocks 13, guide grooves 19 matching the guide blocks 23 are provided on the inner wall of the slot 18 in the connecting block 12, stabilizing plates 10 are fixed on both sides of the second motor 8 at one end of the connecting plate 9 facing the fixed plate 7, and stabilizing grooves 11 matching the stabilizing plates 10 are provided on the outer side of the second motor 8 at one end of the fixed plate 7 facing the connecting plate 9. By setting the mounting holes 3 and the mounting plates 2, the device as a whole can be installed on a CNC machine tool, and by setting the stabilizing plate 10 and the stabilizing grooves 11, the connecting plate 9 can be supported to avoid the second motor 8 supporting the whole and becoming unstable.

[0026] The method of using and the working principle of the device are as follows: when the device is used, first place the workpiece or other items that need to be clamped on the placement plate 22, and adjust the clamping height by operating the telescopic rod 21. After the adjustment, the operation of the first motor 501 drives the bidirectional screw 502 to rotate, so that the two movable plates 4 move toward each other under the limit of the limit column 503, thereby driving the two clamping blocks 13 to move toward each other to clamp and fix the workpiece. After clamping, the telescopic rod 21 drives the placement plate 22 to move downward, and the operation of the two second motors 8 can drive the two clamping blocks 13 installed in the two connecting blocks 12 to rotate synchronously, so as to achieve the effect of adjusting the clamping angle. By using the pulling plate 16, the driving plate 15 is driven to move, thereby Drive the clamping column 1403 to move, so that the clamping column 1403 moves out of the clamping groove 1404 opened on the outer wall of the clamping block 13. At this time, the clamping column 1403 no longer limits the clamping block 13. The user can directly slide out the clamping block 13 and replace it according to the shape of the workpiece that needs to be clamped. During installation, first pull the two pull plates 16 to shrink the clamping column 1403 into the inner cavity 1401. At this time, insert the corresponding clamping block 13 into the connecting block 12 through the slot 18, release the pull plate 16, and drive the clamping column 1403 to move forward through the thrust of the spring 1402, thereby driving the clamping column 1403 to enter the clamping groove 1404 opened on the outer wall of the clamping block 13, limit the clamping block 13, and achieve the effect of installing the clamping block 13.

[0027] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A safety fixture for a CNC machine tool, comprising a mounting frame (1), characterized in that: Both sides of the interior of the mounting frame (1) are provided with movable plates (4), and a driving structure (5) for driving the two movable plates (4) to move toward or away from each other is provided in the mounting frame (1). The top ends of the two movable plates (4) are fixed with fixed plates (7), and the opposite ends of the two fixed plates (7) are installed with second motors (8). The output ends of the two second motors (8) are fixed with connecting plates (9), and the opposite ends of the two connecting plates (9) are fixed with connecting blocks (12). The opposite ends of the two connecting blocks (12) are plugged with clamping blocks (13), and the opposite ends of the two connecting blocks (12) are provided with slots (18) matching the clamping blocks (13). A buckle structure (14) for installing and removing the clamping blocks (13) is provided in the connecting blocks (12). A bottom plate (20) is fixed on the inner wall of the mounting frame (1), and a telescopic rod (21) is installed on the top end of the bottom plate (20). The output end of the telescopic rod (21) is fixed with a placement plate (22).

2. A CNC machine tool safety fixture according to claim 1, characterized in that: The driving structure (5) comprises a first motor (501) arranged at one end of the mounting frame (1); the output end of the first motor (501) passes through one side of the mounting frame (1) and fixes the bidirectional screw (502); the two movable plates (4) are respectively threadedly connected to the two ends of the outer wall of the bidirectional screw (502); and the other ends of the two movable plates (4) are slidably connected to the limit column (503) together.

3. A CNC machine tool safety fixture according to claim 1, characterized in that: The buckle structure (14) comprises an inner cavity (1401) opened in the connection block (12) and located on the inner wall of the slot (18); a spring (1402) is fixed on the inner wall of the inner cavity (1401); a clamping column (1403) is fixed at one end of the spring (1402); an end of the clamping column (1403) away from the spring (1402) passes through the inner wall of the slot (18) and is arranged in the clamping block (13); and a clamping groove (1404) matching the clamping column (1403) is opened on the outer wall of the clamping block (13).

4. A CNC machine tool safety fixture according to claim 2, characterized in that: A support plate (6) is fixed on the outer wall of the mounting frame (1), the first motor (501) is installed on the top of the support plate (6), one end of the bidirectional screw rod (502) away from the first motor (501) is rotatably connected to the mounting frame (1), and both ends of the limit column (503) are fixed to the mounting frame (1).

5. The CNC machine tool safety fixture according to claim 3, characterized in that: Both ends of the clamping column (1403) are fixed with a driving plate (15), one end of each of the two driving plates (15) passes through the outer wall of the connecting block (12) and fixes the pulling plate (16), and both sides of the inner wall of the inner cavity (1401) are provided with movable grooves (17) matching the driving plates (15).

6. A CNC machine tool safety fixture according to claim 1, characterized in that: The four corners of the mounting frame (1) are all fixed with mounting plates (2), and mounting holes (3) are provided in the four mounting plates (2). Guide blocks (23) are fixed on the outer walls of the two clamping blocks (13), and a guide groove (19) matching the guide block (23) is provided on the inner wall of the slot (18) in the connecting block (12). Stabilizing plates (10) are fixed on both sides of the second motor (8) at one end of the connecting plate (9) facing the fixing plate (7), and a stabilizing groove (11) matching the stabilizing plate (10) is provided on the outer side of the second motor (8).

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