A clamp mechanism with pressure feedback function

Abstract

The utility model discloses a clamp mechanism with pressure feedback function, including the mainboard, the bottom of mainboard is equipped with two groups about the first slide groove of symmetry of mainboard, is installed in the mainboard and penetrates two groups first slide groove's lead screw, and lead screw is connected with the rotation of mainboard, and two groups are located in two groups first slide groove's screw thread on the lead screw, and the rotation of two groups screw thread is opposite, and the nut is screw -threadedly connected on two groups screw thread, and the bottom of two groups nut all installs the clamping block. The utility model has the beneficial effects that: through setting up the multiple pressure sensor of clamping block can carry out real -time monitoring to the clamping force of clamping workpiece, when pressure sensor monitors and clamps the force in the range of setting clamping force, controller can control servo motor to stop running, and alarm through the buzzer alarm, thereby can avoid the workpiece loosening or damage workpiece caused by the insufficient clamping force, can timely alarm, make the staff can discover the abnormality fast, avoid damaging one step expansion.

Description

Technical Field

[0001] This utility model relates to the field of clamping technology, and in particular to a clamping mechanism with pressure feedback function. Background Technology

[0002] A fixture is a process device used during machining to quickly secure a workpiece and maintain the correct relative position of the machine tool, cutting tool, and workpiece. It is an indispensable component in machining. Driven by the development of machine tool technology towards high speed, high efficiency, precision, composite, intelligent, and environmentally friendly directions, fixture technology is developing towards high precision, high efficiency, modularity, combination, versatility, and economy. Fixtures are also called clamps. Broadly speaking, any device used to quickly, conveniently, and safely install a workpiece in any step of the machining process can be called a fixture. Examples include welding fixtures, inspection fixtures, assembly fixtures, and machine tool fixtures. Among these, machine tool fixtures are the most common and are often simply referred to as fixtures. A fixture typically consists of positioning elements (determining the correct position of the workpiece in the fixture), clamping devices, tool setting and guiding elements (determining the relative position of the tool and workpiece or guiding the tool direction), indexing devices (allowing the workpiece to complete machining at several stations in one setup; there are rotary indexing devices and linear indexing devices), connecting elements, and the fixture body (fixture base).

[0003] Many existing clamping fixtures lack real-time pressure monitoring during workpiece clamping. Insufficient clamping force can lead to workpiece loosening, while excessive clamping force can damage the workpiece. Therefore, controlling the clamping force is crucial. However, most current fixtures are not equipped with pressure feedback and alarm mechanisms, making it difficult to effectively prevent operational malfunctions caused by improper clamping force. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing fixtures, which often lack real-time pressure monitoring during workpiece clamping. Insufficient clamping force may cause the workpiece to loosen, while excessive clamping force may damage the workpiece. Therefore, controlling the clamping force is particularly important. However, most fixtures currently lack pressure feedback and alarm mechanisms, making it difficult to effectively avoid operational failures caused by improper clamping force. This invention provides a fixture mechanism with pressure feedback function.

[0005] The purpose of this utility model is achieved through the following technical solution: a clamping mechanism with pressure feedback function, including a main board, two sets of first sliding grooves symmetrical about the main board are opened at the bottom of the main board, a lead screw passing through the two sets of first sliding grooves is installed in the main board, the lead screw is rotatably connected to the main board, a servo motor is installed on one side of the main board, the power output end of the servo motor is connected to one end of the lead screw, two sets of threads are respectively located in the two sets of first sliding grooves on the lead screw, the two sets of threads have opposite directions of rotation, nuts are threadedly connected to both sets of threads, and clamping blocks are installed at the bottom of both sets of nuts;

[0006] The mainboard is equipped with a controller connected to the servo motor. Multiple pressure sensors are installed at equal intervals on the sides of the two clamping blocks that are close to each other. All pressure sensors are connected to the controller. The controller is equipped with a display screen and a control panel. A buzzer alarm connected to the controller is installed on the mainboard.

[0007] By setting multiple pressure sensors on the clamping block, the clamping force of the workpiece can be monitored in real time. When the pressure sensor detects that the clamping force is outside the set clamping force range, the controller can control the servo motor to stop running and sound an alarm. This can prevent the workpiece from loosening due to insufficient clamping force or being damaged due to excessive clamping force. At the same time, it can also provide timely alarms so that the staff can quickly detect abnormalities and prevent the damage from escalating. Setting multiple pressure sensors at equal intervals can monitor the pressure at multiple points on the clamping block. The controller can determine whether the clamping position of the clamping block is accurate by using the pressure values ​​detected by multiple pressure sensors. When there is a significant difference in the pressure values ​​detected by multiple pressure sensors, the controller will control the servo motor to pause and sound an alarm to prevent the workpiece from falling off due to inaccurate clamping position and causing an accident.

[0008] The display screen on the controller allows operators to observe data monitored by multiple pressure sensors, and the control panel facilitates adjustment of the controller's set safe clamping force range. This allows for adjustment of the clamping force range according to different usage requirements, thereby improving the applicability of the equipment.

[0009] A further technical solution involves creating multiple sets of grooves on the clamping block, with multiple pressure sensors installed within each groove. The sensing surfaces of the pressure sensors are flush with the clamping surface of the clamping block, and the clamping surface is equipped with anti-slip pads. By positioning the pressure sensors within the grooves,

[0010] A further technical solution is that limit grooves are opened on the sides of both sets of first slide grooves, and limit blocks that are slidably connected to the limit grooves are installed on both sides of the nut. The sensing surface of the pressure sensor is flush with the clamping surface of the clamping block, which can ensure the detection accuracy of the pressure sensor. At the same time, the anti-slip pads on the clamping surface of the clamping block can protect the surface of the workpiece.

[0011] A further technical solution involves installing a displacement sensor on the nut that is connected to the controller. By setting the displacement sensor, the distance the nut moves can be monitored. The controller can determine the size of the workpiece based on the distance the two sets of nuts move, thereby determining whether the clamping position of the clamping block is accurate. When the distance the two sets of nuts move is outside the range of the equipment, the controller will sound an alarm via a buzzer to prevent safety accidents.

[0012] A further technical solution is that the bottom surface of the nut is detachably connected to the clamping block via the main connecting plate, and two sets of T-shaped connecting plates are installed on the bottom surface of the main plate, which are detachably connected to the clamping block respectively. The two sets of T-shaped connecting plates are located on both sides of the main connecting plate.

[0013] The upper part of the clamping block has three sets of slots. The lower parts of the main connecting plate and the T-shaped connecting plate are inserted into the slots. The main connecting plate, the slots and the T-shaped connecting plate are all provided with threaded holes. The clamping block is equipped with fixing bolts that are threadedly connected to the threaded holes.

[0014] By using threaded holes and fixing bolts, the main connecting plate, T-shaped connecting plate and clamping block can be detachably connected, which makes it easy to replace different clamping blocks according to different workpieces, improves the applicability of the equipment and meets different usage requirements.

[0015] A further technical solution is to have a second sliding groove at the bottom of the motherboard, and a T-shaped connecting plate slidably connected to the second sliding groove. By setting the T-shaped connecting plate to a T-shape, the connection strength between the clamp and the motherboard can be improved, thereby improving the load capacity of the motherboard.

[0016] This invention has the following advantages: By setting multiple sets of pressure sensors on the clamping block, the clamping force of the workpiece can be monitored in real time. When the pressure sensors detect that the clamping force is outside the set clamping force range, the controller can control the servo motor to stop running and sound an alarm via a buzzer. This can prevent the workpiece from loosening due to insufficient clamping force or being damaged due to excessive clamping force. At the same time, it can promptly sound an alarm, allowing workers to quickly detect abnormalities and prevent further damage. Setting multiple sets of pressure sensors at equal intervals can monitor the pressure at multiple points on the clamping block. The controller can determine whether the clamping position of the clamping block is accurate by using the pressure values ​​detected by multiple sets of pressure sensors. When there is a significant difference in the pressure values ​​detected by multiple sets of pressure sensors, the controller controls the servo motor to pause and sounds an alarm via a buzzer, preventing accidents caused by inaccurate clamping position when clamping the workpiece. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a three-dimensional structural diagram of the internal structure of the motherboard of this utility model;

[0019] Figure 3 This is a side view sectional diagram of the present invention;

[0020] Figure 4 This is a cross-sectional view of the clamping block in this utility model;

[0021] In the diagram, 1. Main board; 2. First slide rail; 3. Lead screw; 4. Servo motor; 5. Nut; 6. Clamping block; 7. Pressure sensor; 8. Limit groove; 9. Limit block; 10. Controller; 11. Display screen; 12. Control panel; 13. Buzzer alarm; 14. Mounting base; 15. Threaded hole; 16. Fixing bolt; 17. Displacement sensor; 18. Groove; 19. Main connecting plate; 20. Slot; 21. T-shaped connecting plate; 22. Second slide rail. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0024] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0025] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] Example 1: As Figures 1-4 As shown, a clamping mechanism with pressure feedback function includes a main board 1. The bottom of the main board 1 has two sets of first sliding grooves 2 that are symmetrical about the main board 1. A lead screw 3 is installed in the main board 1, passing through the two sets of first sliding grooves 2. The lead screw 3 is rotatably connected to the main board 1. A servo motor 4 is installed on one side of the main board 1. The power output end of the servo motor 4 is connected to one end of the lead screw 3. The lead screw 3 has two sets of threads located in the two sets of first sliding grooves 2 respectively. The two sets of threads have opposite directions of rotation. Nuts 5 are threaded onto both sets of threads. Clamping blocks 6 are installed at the bottom of both sets of nuts 5.

[0029] The main board 1 is equipped with a controller 10 connected to the servo motor 4. Multiple pressure sensors 7 are installed on the sides of the two clamping blocks 6 that are close to each other. The multiple pressure sensors 7 are all connected to the controller 10. The controller 10 is equipped with a display screen 11 and a control panel 12. The main board 1 is equipped with a buzzer alarm 13 connected to the controller 10.

[0030] By setting multiple sets of pressure sensors 7 on the clamping block 6, the clamping force of the workpiece can be monitored in real time. When the pressure sensor 7 detects that the clamping force is outside the set clamping force range, the controller 10 can control the servo motor 4 to stop running and sound an alarm through the buzzer alarm 13. This can prevent the workpiece from loosening due to insufficient clamping force or damaging the workpiece due to excessive clamping force. At the same time, it can also sound an alarm in time, so that the staff can quickly find the abnormality and prevent the damage from escalating. Setting multiple sets of pressure sensors 7 at equal distances can monitor the pressure at multiple points on the clamping block 6. The controller 10 can determine whether the clamping position of the clamping block 6 is accurate by using the pressure values ​​detected by multiple sets of pressure sensors 7. When there is a significant difference in the pressure values ​​detected by multiple sets of pressure sensors 7, the controller 10 controls the servo motor 4 to stop and sounds an alarm through the buzzer alarm 13 to prevent the workpiece from falling off due to inaccurate clamping position.

[0031] The display screen 11 on the controller 10 allows operators to observe data monitored by multiple pressure sensors 7, and the control panel 12 facilitates adjustment of the range of safe clamping force set by the controller 10, thereby adjusting the range of clamping force according to different usage requirements and improving the applicability of the equipment.

[0032] Multiple sets of grooves 18 are formed on the clamping block 6, and multiple sets of pressure sensors 7 are respectively installed in the multiple sets of grooves 18. The sensing surface of the multiple sets of pressure sensors 7 is flush with the clamping surface of the clamping block 6, and the clamping surface of the clamping block 6 is provided with anti-slip pads. By setting the pressure sensors 7 to be located in the grooves 18,

[0033] Both sets of first sliding grooves 2 have limit grooves 8 on their sides. Limit blocks 9 that are slidably connected to the limit grooves 8 are installed on both sides of the nut 5. The sensing surface of the pressure sensor 7 is flush with the clamping surface of the clamping block 6, which can ensure the detection accuracy of the pressure sensor 7. At the same time, the anti-slip pad on the clamping surface of the clamping block 6 can protect the surface of the workpiece.

[0034] A displacement sensor 17 connected to the controller 10 is installed on the nut 5. By setting the displacement sensor 17, the distance the nut 5 moves can be monitored. The controller 10 can determine the size of the workpiece based on the distance the two sets of nuts 5 move, thereby determining whether the clamping position of the clamping block 6 is accurate. When the distance the two sets of nuts 5 move is outside the range of the equipment, the controller 10 will sound an alarm through the buzzer alarm 13 to avoid safety accidents.

[0035] The bottom surface of nut 5 is detachably connected to clamping block 6 via main connecting plate 19. Two sets of T-shaped connecting plates 21, which are detachably connected to clamping block 6, are installed on the bottom surface of main plate 1. The two sets of T-shaped connecting plates 21 are located on both sides of main connecting plate 19.

[0036] The upper part of the clamping block 6 is provided with three sets of slots 20. The lower parts of the main connecting plate 19 and the T-shaped connecting plate 21 are inserted into the slots 20. The main connecting plate 19, the slots 20 and the T-shaped connecting plate 21 are all provided with threaded holes 15. The clamping block 6 is equipped with fixing bolts 16 that are threadedly connected to the threaded holes 15.

[0037] By using threaded holes 15 and fixing bolts 16, the main connecting plate 19, T-shaped connecting plate 21 and clamping block 6 can be detachably connected, which makes it easy to replace different clamping blocks 6 according to different workpieces, improves the applicability of the equipment and meets different usage requirements.

[0038] The bottom of the motherboard 1 is provided with a second sliding groove 22. The T-shaped connecting plate 21 is slidably connected to the second sliding groove 22. By setting the T-shaped connecting plate 21 to be T-shaped, the connection strength between the clamping block 6 and the motherboard 1 can be improved, thereby improving the load capacity of the motherboard 1.

[0039] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A clamping mechanism with pressure feedback function, comprising a main board (1), characterized in that: the bottom of the main board (1) is provided with two sets of first sliding grooves (2) symmetrical about the main board (1), a lead screw (3) passing through the two sets of first sliding grooves (2) is installed in the main board (1), the lead screw (3) is rotatably connected to the main board (1), a servo motor (4) is installed on one side of the main board (1), the power output end of the servo motor (4) is connected to one end of the lead screw (3), two sets of threads on the lead screw (3) are respectively located in the two sets of first sliding grooves (2), the two sets of threads have opposite directions of rotation, nuts (5) are threadedly connected to the two sets of threads, and clamping blocks (6) are installed at the bottom of the two sets of nuts (5); The motherboard (1) is equipped with a controller (10) connected to the servo motor (4). Multiple pressure sensors (7) are installed on the side of the two sets of clamps (6) that are close to each other. The multiple pressure sensors (7) are connected to the controller (10). The controller (10) is equipped with a display screen (11) and a control panel (12).

2. The clamping mechanism with pressure feedback function according to claim 1, characterized in that: The clamping block (6) has multiple sets of grooves (18), and multiple sets of pressure sensors (7) are respectively installed in the multiple sets of grooves (18). The sensing surface of the multiple sets of pressure sensors (7) is flush with the clamping surface of the clamping block (6), and the clamping surface of the clamping block (6) is provided with an anti-slip pad.

3. A clamping mechanism with pressure feedback function according to claim 1, characterized in that: A buzzer alarm (13) connected to the controller (10) is installed on the motherboard (1).

4. A clamping mechanism with pressure feedback function according to claim 1, characterized in that: Both sets of the first sliding grooves (2) have limit grooves (8) on their sides, and limit blocks (9) that are slidably connected to the limit grooves (8) are installed on both sides of the nut (5).

5. A clamping mechanism with pressure feedback function according to claim 4, characterized in that: A displacement sensor (17) connected to the controller (10) is installed on the nut (5).

6. A clamping mechanism with pressure feedback function according to claim 1, characterized in that: The bottom surface of the nut (5) is detachably connected to the clamping block (6) via the main connecting plate (19). Two sets of T-shaped connecting plates (21) are detachably connected to the clamping block (6) respectively on the bottom surface of the main plate (1). The two sets of T-shaped connecting plates (21) are located on both sides of the main connecting plate (19). The upper part of the clamping block (6) is provided with three sets of slots (20). The lower parts of the main connecting plate (19) and the T-shaped connecting plate (21) are inserted into the slots (20). The main connecting plate (19), the slots (20) and the T-shaped connecting plate (21) are all provided with threaded holes (15). The clamping block (6) is equipped with fixing bolts (16) that are threadedly connected to the threaded holes (15).

7. A clamping mechanism with pressure feedback function according to claim 6, characterized in that: The bottom of the main board (1) is provided with a second sliding groove (22), and the T-shaped connecting plate (21) is slidably connected to the second sliding groove (22).

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