Floating type clamp structure

Abstract

The utility model discloses a floating type clamp structure which comprises a base, a vertical plate vertically arranged on one side of the top of the base, a driving piece arranged on the top of the base, a two-way screw rod arranged at the output end of the driving piece and parallel to the vertical plate, and pushing blocks in threaded connection with the two ends of the two-way screw rod respectively and in sliding fit with the vertical plate. An upper clamp in sliding fit with the two-way screw is arranged at the bottom of the upper pushing block, a lower clamp in sliding fit with the two-way screw is arranged at the top of the lower pushing block, the upper clamp corresponds to the lower clamp, and auxiliary clamping assemblies are arranged on the opposite sides of the upper clamp and the lower clamp respectively. Through cooperation of the auxiliary clamping assembly, the upper clamp and the lower clamp, it can be ensured that the outer surfaces of workpieces are not damaged while the workpieces are clamped, the workpieces of different sizes and shapes can be clamped, and use is convenient and fast.

Description

Technical Field

[0001] This utility model relates to the field of clamping technology, specifically to a floating clamp structure. Background Technology

[0002] A fixture is a device used in mechanical manufacturing to fix a workpiece in the correct position for machining or inspection. It is also called a clamp, gripper, etc. In engineering systems such as machinery, vehicle manufacturing, and aerospace, any device used to quickly, conveniently, and safely install workpieces can be called a fixture. Examples include welding fixtures, inspection fixtures, assembly fixtures, and machine tool fixtures, with machine tool fixtures being the most common. When machining workpieces on a machine tool, to ensure that the workpiece surface meets the technical requirements specified in the drawings, such as dimensions, geometry, and positional accuracy relative to other surfaces, the workpiece must be properly mounted (positioned) and clamped (tightened) before machining.

[0003] Traditional clamps lack elasticity in the gripping process, resulting in rigid contact between the grippers and the workpiece, which can damage the workpiece. After damage, the workpiece needs to be replaced, increasing costs. At the same time, it also leads to a decrease in the machining accuracy of the workpiece and a decrease in production quality. Furthermore, the clamping process is cumbersome, and the stress release of the material causes great deformation. Utility Model Content

[0004] The purpose of this invention is to provide a floating clamp structure to solve the problems of existing clamps being cumbersome to install and easily damaging workpieces.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0006] A floating clamp structure includes: a base, a vertical plate vertically disposed on one side of the top of the base, a driving component disposed on the top of the base, a bidirectional screw disposed on the output end of the driving component and parallel to the vertical plate, and a push block threadedly connected to both ends of the bidirectional screw and slidingly engaged with the vertical plate.

[0007] The upper push block is equipped with an upper clamp that slides with the bidirectional screw at its bottom, and the lower push block is equipped with a lower clamp that slides with the bidirectional screw at its top. The upper and lower clamps correspond to each other, and auxiliary clamping components are provided on the opposite sides of the upper and lower clamps.

[0008] Furthermore, the auxiliary clamping components on the upper clamp and the lower clamp are distributed alternately.

[0009] Furthermore, the aforementioned auxiliary clamping assembly includes an auxiliary clamping block and a spring. The upper clamp and the lower clamp each have a groove on their opposite sides that matches the auxiliary clamping block, and the depth of the groove is greater than the thickness of the auxiliary clamping block. The spring is connected between the bottom wall of the groove and the auxiliary clamping block.

[0010] Furthermore, the aforementioned auxiliary clamping assembly also includes a fixing rod, which is disposed on the bottom wall of the groove, and the spring is located on the outside of the fixing rod;

[0011] When the auxiliary clamping block contacts the end of the fixing rod, the end face of the auxiliary clamping block is flush with the end face of the corresponding upper / lower clamp.

[0012] Furthermore, a groove is provided along the axial direction of the vertical plate, and a slider matching the groove is provided on the push block, with a ball bearing provided on the side of the slider facing the bottom wall of the groove.

[0013] Furthermore, the aforementioned upper clamp includes an upper connecting ring rotatably disposed at the bottom of the upper push block and slidingly engaged with a bidirectional screw, and an upper jaw disposed on the outer wall of the upper connecting ring. The bottom of the upper jaw has a groove, and the upper connecting ring is locked onto the corresponding push block by screws.

[0014] Furthermore, the aforementioned lower clamp includes a lower connecting ring rotatably disposed on the top of the lower push block and slidingly engaged with a bidirectional screw, and a lower clamping claw disposed on the outer wall of the lower connecting ring. The lower clamping claw corresponds to the upper clamping claw, and a groove is provided on the top of the lower clamping claw. The lower connecting ring is locked onto the corresponding push block by a screw.

[0015] Furthermore, the top of the upper jaw and the bottom of the lower jaw are respectively provided with a number of threaded holes that are connected to screws at an annular interval.

[0016] Furthermore, position detection elements are embedded on the opposite sides of the upper and lower grippers.

[0017] This utility model has the following beneficial effects:

[0018] 1. The floating clamp structure of this utility model drives a bidirectional screw to rotate via a drive component. The rotation of the bidirectional screw causes two pushing blocks to move closer or further apart, which in turn causes the upper and lower clamps to move closer or further apart. When the two clamps are close together, they can clamp the workpiece. By setting auxiliary clamping components on the upper and lower clamps, when both the upper and lower clamps are in contact with the workpiece, the drive component stops rotating, thus pausing the movement of the upper and lower clamps. At this time, the auxiliary clamping components assist in clamping the workpiece, thereby avoiding damage to the workpiece caused by excessive clamping force. The cooperation between the auxiliary clamping components and the upper and lower clamps ensures that the workpiece is clamped without damaging its outer surface, and can clamp workpieces of different sizes and shapes, making it convenient to use.

[0019] 2. The floating clamp structure of this utility model allows the drive component to stop rotating when both the upper and lower clamps are in contact with the workpiece, thus pausing the movement of the upper and lower clamps. Under the elastic force of the spring, the auxiliary clamping block can contact the workpiece and provide auxiliary clamping, greatly reducing damage to the workpiece and minimizing deformation, thereby improving production efficiency. The fixed rod limits the movement of the auxiliary clamping block, preventing it from entering the groove for irregularly shaped workpieces, thus ensuring that the auxiliary clamping block can always clamp the workpiece. Furthermore, the auxiliary clamping components on the upper and lower clamps are staggered, allowing clamping at different positions on both sides of the workpiece, thereby generating clamping force at different positions on both sides of the workpiece, resulting in more stable clamping.

[0020] 3. The floating clamp structure of this utility model has several threaded holes spaced in a ring on the upper and lower jaws, which can be used to adjust the position of the two jaws according to the use; when multiple floating clamp structures are used together, they can clamp workpieces of different shapes.

[0021] 4. The floating clamp structure of this utility model allows the slider on the push block to slide in conjunction with the groove on the vertical plate. The ball bearings on the slider can reduce the wear of the components. Attached Figure Description

[0022] Figure 1 This is a side view schematic diagram of the floating clamp structure;

[0023] Figure 2 This is a schematic diagram of the clamping surfaces of the upper and lower clamps;

[0024] Figure 3 This is a cross-sectional schematic diagram of the floating clamp structure.

[0025] Figure 4 for Figure 3 A magnified structural diagram at point A.

[0026] In the diagram: 1. Base; 2. Vertical plate; 21. Slide groove; 3. Drive component; 4. Bidirectional screw; 5. Push block; 51. Slider; 6. Upper clamp; 61. Upper connecting ring; 62. Upper jaw; 7. Lower clamp; 71. Lower connecting ring; 72. Lower jaw; 8. Auxiliary clamping assembly; 81. Auxiliary clamping block; 82. Spring; 83. Fixing rod; 9. Position detection component. Detailed Implementation

[0027] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0028] like Figures 1 to 4As shown, an embodiment of this utility model provides a floating clamp structure, including: a base 1, a vertical plate 2 vertically disposed on one side of the top of the base 1, a drive component 3 disposed on the top of the base 1, the drive component 3 being a servo motor, a bidirectional screw 4 disposed on the output end of the drive component 3 and parallel to the vertical plate 2, the bidirectional screw 4 being connected to the output shaft of the drive component 3 via a coupling, and push blocks 5 threadedly connected to both ends of the bidirectional screw 4 and slidingly engaged with the vertical plate 2; specifically, a groove 21 is provided on the vertical plate 2 along its axial direction, and a slider 51 matching the groove 21 is provided on the push block 5, and a ball is provided on the side of the slider 51 facing the bottom wall of the groove 21, the ball being provided to reduce the frictional loss between the slider 51 and the groove 21.

[0029] Furthermore, the bottom of the upper push block 5 is equipped with an upper clamp 6 that slides with the bidirectional screw 4, and the top of the lower push block 5 is equipped with a lower clamp 7 that slides with the bidirectional screw 4. The upper clamp 6 and the lower clamp 7 correspond to each other, and auxiliary clamping components 8 are respectively provided on the opposite sides of the upper clamp 6 and the lower clamp 7. The bidirectional screw 4 is driven to rotate by the drive member 3. The rotation of the bidirectional screw 4 will cause the two push blocks 5 to move closer or further apart, which in turn will cause the upper clamp 6 and the lower clamp 7 to move closer or further apart. When the two clamps are close together, they can clamp the workpiece. When both the upper clamp 6 and the lower clamp 7 are in contact with the workpiece, the drive member 3 stops rotating, which can stop the movement of the upper clamp 6 and the lower clamp 7. At this time, the auxiliary clamping components 8 can assist in clamping the workpiece, thereby avoiding damage to the workpiece due to excessive clamping force.

[0030] Specifically, in this embodiment, the auxiliary clamping components 8 on the upper clamp 6 and the lower clamp 7 are staggered; this arrangement allows the auxiliary clamping components 8 to generate clamping forces at different positions on both sides of the workpiece, resulting in multiple contact points and making the clamping more stable.

[0031] The auxiliary clamping assembly 8 includes an auxiliary clamping block 81 and a spring 82. The upper clamp 6 and the lower clamp 7 have grooves on opposite sides that match the auxiliary clamping block 81, and the depth of the grooves is greater than the thickness of the auxiliary clamping block 81. The spring 82 is connected between the bottom wall of the groove and the auxiliary clamping block 81. When the spring 82 is in its natural state, both auxiliary clamping blocks 81 extend to the outside of the groove. The auxiliary clamping assembly 8 also includes a fixing rod 83, which is disposed on the bottom wall of the groove, and the spring 82 is located on the outside of the fixing rod 83. When the auxiliary clamping block 81 contacts the end of the fixing rod 83, the end face of the auxiliary clamping block 81 is flush with the end face of the corresponding upper clamp 6 / lower clamp 7. When the end of the fixing rod 83 on the bottom wall of the groove of the upper clamp 6 contacts the corresponding auxiliary clamping block 81, the end face of the auxiliary clamping block 81 is flush with the end face of the corresponding upper clamp 6. When the fixing rod 83 on the bottom wall of the groove of the lower clamp 7 contacts the corresponding auxiliary clamping block 81, the end face of the auxiliary clamping block 81 is flush with the end face of the corresponding lower clamp 7. The fixing rod 83 is used to limit the position of the auxiliary clamping block 81 in the groove.

[0032] like Figure 3 As shown, the upper clamp 6 includes an upper connecting ring 61 rotatably disposed at the bottom of the upper push block 5 and slidingly engaged with the bidirectional screw 4, and an upper jaw 62 disposed on the outer wall of the upper connecting ring 61. In this embodiment, the bottom of the upper push block 5 is provided with a coaxial annular groove, and the top of the upper connecting ring 61 is provided with an annular shaft that matches the annular groove, thus enabling rotation. The upper connecting ring 61 is locked to the corresponding push block 5 by screws. The bottom of the upper jaw 62 is provided with a groove.

[0033] The lower clamp 7 includes a lower connecting ring 71 rotatably mounted on top of the lower push block 5 and slidingly engaged with the bidirectional screw 4, and a lower jaw 72 disposed on the outer wall of the lower connecting ring 71. In this embodiment, the top of the lower push block 5 has a coaxial annular groove, and the bottom of the lower connecting ring 71 has an annular shaft matching the annular groove, thus enabling rotation. Furthermore, the lower connecting ring 71 is locked to the corresponding push block 5 by screws. The lower jaw 72 corresponds to the upper jaw 62, and the top of the lower jaw 72 has a groove. The groove on the upper jaw 62 does not correspond to the groove on the lower jaw 72.

[0034] To facilitate adjustment of the positions of the upper clamp 6 and lower clamp 7 on the corresponding push blocks 5, the top of the upper clamp 62 and the bottom of the lower clamp 72 are respectively provided with several threaded holes (not shown in the figure) at an annular interval. The two push blocks 5 are provided with threaded through holes for screw thread engagement. The screw passes through the threaded through holes on the push blocks 5 and connects to the threaded holes on the corresponding upper clamp 62 / lower clamp 72. When multiple floating clamp structures are used in combination, workpieces of different shapes can be clamped.

[0035] In other embodiments of this utility model, position detection elements 9 are embedded on opposite sides of the upper jaw 62 and the lower jaw 72, with the detection end of the position detection element 9 flush with the clamping surface of the jaw. The position detection element 9 adopts an existing contact displacement sensor, model Panasonic HG-C2100, which is communicatively connected to an external controller. The drive unit 3 is also communicatively connected to the external controller. With this configuration, when both contact displacement sensors are in contact with the surface of the workpiece, they feed back the position information to the controller. The controller then controls the start and stop of the drive unit 3, thereby achieving intelligent control of the clamps.

[0036] In use, the floating clamp structure of this utility model drives the bidirectional screw 4 to rotate via the driving component 3. The rotation of the bidirectional screw 4 causes the two pushing blocks 5 to slide along the vertical plate 2, making the two pushing blocks 5 move closer or further apart, thereby causing the upper clamp 6 and the lower clamp 7 to move closer or further apart. When the two clamps move closer together, they are used to clamp the workpiece. The upper jaw 62 and the lower jaw 72 are located on the upper and lower sides of the workpiece. The auxiliary clamping block 81 on the auxiliary clamping assembly 8 will first contact the surface of the workpiece. As the two clamps move closer together, the spring 82 is compressed. When both position detection components 9 are in contact with the workpiece... When the workpiece comes into contact, it feeds back its position information to the controller. The controller then controls the drive unit 3 to pause. The spring force of the spring 82 acts on the auxiliary clamping block 81 to clamp the workpiece, thereby greatly reducing damage to the workpiece. Furthermore, the auxiliary clamping components 8 on the upper clamp 6 and the lower clamp 7 are staggered, allowing for clamping at different positions on both sides of the workpiece. This results in the auxiliary clamping components 8 generating clamping force at different positions on both sides of the workpiece, making the clamping more stable. At the same time, the positions of the two clamps on the corresponding push blocks 5 can be adjusted according to usage requirements to accommodate workpieces of different shapes.

[0037] 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, improvements, etc., 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 floating clamp structure, characterized in that, include: The base (1), the vertical plate (2) vertically arranged on the top side of the base (1), the driving member (3) arranged on the top of the base (1), the bidirectional screw (4) arranged on the output end of the driving member (3) and parallel to the vertical plate (2), and the push block (5) threadedly connected to both ends of the bidirectional screw (4) and slidingly engaged with the vertical plate (2); The bottom of the upper push block (5) is provided with an upper clamp (6) that slides with the bidirectional screw (4), and the top of the lower push block (5) is provided with a lower clamp (7) that slides with the bidirectional screw (4). The upper clamp (6) and the lower clamp (7) correspond to each other, and auxiliary clamping components (8) are respectively provided on the opposite side of the upper clamp (6) and the lower clamp (7). The auxiliary clamping assembly (8) includes an auxiliary clamping block (81) and a spring (82). The upper clamp (6) and the lower clamp (7) have grooves on opposite sides that match the auxiliary clamping block (81), and the depth of the grooves is greater than the thickness of the auxiliary clamping block (81). The spring (82) is connected between the bottom wall of the groove and the auxiliary clamping block (81). The upper clamp (6) includes an upper connecting ring (61) which is rotatably disposed at the bottom of the upper push block (5) and slides in cooperation with the bidirectional screw (4), and an upper jaw (62) disposed on the outer wall of the upper connecting ring (61). The upper jaw (62) has a groove at its bottom. The upper connecting ring (61) is locked to the corresponding push block (5) by screws. The lower clamp (7) includes a lower connecting ring (71) rotatably disposed on the top of the lower push block (5) and slidingly engaged with the bidirectional screw (4), and a lower jaw (72) disposed on the outer wall of the lower connecting ring (71). The lower jaw (72) corresponds to the upper jaw (62). The lower jaw (72) has a groove on its top. The lower connecting ring (71) is locked to the corresponding push block (5) by screws. The top of the upper jaw (62) and the bottom of the lower jaw (72) are respectively provided with a number of threaded holes that are connected to screws at an annular interval; a position detection element (9) is embedded on the opposite side of the upper jaw (62) and the lower jaw (72).

2. The floating clamp structure according to claim 1, characterized in that, The auxiliary clamping components (8) on the upper clamp (6) and the lower clamp (7) are staggered.

3. The floating clamp structure according to claim 1, characterized in that, The auxiliary clamping assembly (8) further includes a fixing rod (83), which is disposed on the bottom wall of the groove, and the spring (82) is located on the outside of the fixing rod (83); When the auxiliary clamp (81) contacts the end of the fixing rod (83), the end face of the auxiliary clamp (81) is flush with the end face of the corresponding upper clamp (6) / lower clamp (7).

4. The floating clamp structure according to claim 1, characterized in that, The vertical plate (2) has a groove (21) along its axial direction. The push block (5) is provided with a slider (51) that matches the groove (21), and the slider (51) has a ball on the side facing the bottom wall of the groove (21).

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