Flexible clamp applied to thin-wall part

Abstract

The utility model belongs to the field of clamps, and provides a flexible clamp applied to a thin-walled workpiece, which comprises a base plate, a placing table, and sliding table mechanisms, position adjusting mechanisms, telescopic mechanisms and locking mechanisms which are symmetrically distributed on two sides of the placing table, the placing table is arranged on the base plate, and a workpiece to be machined is fixed to the placing table in a vertical posture. The position adjusting mechanism is movably arranged on the sliding table mechanism, and a ball bowl and a profiling block are arranged on the position adjusting mechanism. Compared with the prior art, the clamp has the advantages that the flexibility of the clamp is improved through the ball bowl with the angle adjusted in a universal mode and matching with the profiling piece, and the requirement for stably clamping different positions of a thin-wall part is met; and meanwhile, under the one-time pressing action of the unlocking handle, locking of the position where the profiling block is located can be completed on one hand and tensioning of the fixing rod and the sliding table mechanism can be completed on the other hand under locking of the two dead point positions, and therefore guarantee is provided for the accuracy and stability when the profiling block clamps the workpiece.

Description

Technical Field

[0001] This utility model belongs to the field of clamps, specifically relating to a flexible clamp applied to thin-walled parts. Background Technology

[0002] Thin-walled parts are widely used in key components of mechanical equipment due to their lightweight and high strength characteristics. However, thin-walled parts have complex structures and low rigidity, and are prone to deformation and vibration during processing due to uneven clamping force or positioning deviation, resulting in loss of accuracy and increased scrap rate.

[0003] While existing fixture technology has made some progress, it still has many shortcomings in terms of versatility, efficiency, and intelligence. Due to the special structure of thin-walled parts, fixtures need to be clamped multiple times to achieve machining at different positions. If the clamping force is not evenly distributed, local stress concentration can easily lead to workpiece deformation, thus affecting machining accuracy. Most existing fixtures are modular fixtures, meaning that they achieve a certain degree of flexibility through modular components, but they require frequent manual adjustments to the position, which is inefficient and cannot effectively guarantee the fit to complex curved thin-walled parts. This makes it difficult to meet the requirements of high precision and multi-size adaptability, ultimately affecting the overall machining quality of thin-walled parts. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the existing technology, the technical problem to be solved by this utility model is to propose a flexible clamp for thin-walled parts with simple overall structure, convenient and quick operation and improved flexibility.

[0005] The technical solution adopted by this utility model to solve its technical problem is to propose a flexible clamp for thin-walled parts, which is used to clamp non-flat workpieces to be processed, including a base plate, a placement platform, and a sliding table mechanism, an adjustment mechanism, a telescopic mechanism and a locking mechanism symmetrically distributed on both sides of the placement platform.

[0006] The placement platform is disposed on the substrate, and the workpiece to be processed is fixed on the placement platform in a vertical position;

[0007] The adjustment mechanism is movably mounted on the slide mechanism. The adjustment mechanism is provided with a ball cup and a contour block. The contour block is connected to the ball cup and can be movably pressed against the side wall of the workpiece when the ball cup adjusts its relative position with the adjustment mechanism. The slide mechanism is movably mounted on the base plate and is used to drive the adjustment mechanism closer to or further away from the placement stage, so that the contour block can be movably pressed against the side wall of the workpiece at different height positions.

[0008] The telescopic mechanism is movably connected to the adjustment mechanism to adapt to the distance between the sliding table mechanism and the placement table;

[0009] The locking mechanism includes a drive arm and a pressing block. A first connecting plate is movably disposed between the drive arm and the locking mechanism, and a second connecting plate is movably disposed between the drive arm and the telescopic mechanism. The connection point of the second connecting plate and the telescopic mechanism is movably disposed together in the locking mechanism. When the drive arm drives the pressing block to move and press the slide mechanism, the first connecting plate forms a first dead point with the drive arm, and simultaneously the second connecting plate forms a second dead point with the drive arm.

[0010] When the drive arm drives the clamping block to press the adjustment mechanism, the first dead point is used to limit the displacement of the adjustment mechanism relative to the substrate, and in conjunction with the second dead point, locks the slide mechanism and the ball cup so that the contour block can clamp the workpiece.

[0011] In the aforementioned flexible clamp applied to thin-walled parts, the drive arm comprises a drive part, an extension part, and an unlocking handle, all of which are arranged at an angle to each other, and the common connection point of the drive part, the extension part, and the unlocking handle is movably hinged to the first connecting plate.

[0012] In the aforementioned flexible clamp applied to thin-walled parts, the telescopic mechanism includes:

[0013] A sliding seat is movably disposed within the slide mechanism, and the sliding seat is movably connected to the adjustment mechanism;

[0014] The rotating rod and the adjusting rod are provided. One end of the rotating rod is movably hinged to the sliding seat, and the other end has an adjusting hole. One end of the adjusting rod has a connecting post and a scale indicator block formed on each of its two side walls. The connecting post can pass through the adjusting hole and be connected by a fastener. The scale indicator block is used to display the overall length of the adjusting rod and the rotating rod. The other end of the adjusting rod moves together with the second connecting plate in the locking mechanism.

[0015] In the aforementioned flexible clamp applied to thin-walled parts, a guide rail is provided on the locking mechanism along the vertical direction, and a movable seat is movably engaged on the guide rail. One end of the second connecting plate is movably hinged to the extension, and the other end of the second connecting plate and the end of the adjusting rod away from the rotating rod are both hinged to the movable seat, so that the second dead point is formed when the second connecting plate and the extension are collinear.

[0016] In the aforementioned flexible clamp applied to thin-walled parts, the positioning mechanism further includes:

[0017] A support block, one end of which is movably disposed within the slide mechanism, and the other end of which forms a spherical groove, wherein the ball cup is movably connected within the spherical groove;

[0018] A fixing rod is disposed within the support block. One end of the fixing rod has a locking block that is movably pressed against the inner wall of the ball cup to restrict the ball cup from rotating within the spherical groove. The other end of the fixing rod is movably connected to the sliding seat.

[0019] In the aforementioned flexible fixture applied to thin-walled parts, the end of the support block near the placement platform can also be detachably connected to two semi-limiting rings. When the semi-limiting rings are pressed together, they can prevent the ball cup from dislodging from the spherical groove.

[0020] In the aforementioned flexible clamp applied to thin-walled parts, the locking mechanism further includes:

[0021] A support plate is provided on the placement platform. One end of the first connecting plate is movably hinged to the support plate, and the other end is hinged to the common connection point of the driving part, the extension part, and the unlocking handle, so that the first dead point is formed when the driving part and the first connecting plate are collinear.

[0022] A rotating block, one end of which is hinged to the support plate and the other end of which is hinged to the drive unit, and a U-shaped extension rod is vertically connected to the rotating block;

[0023] The upper cover plate is connected to the bottom of the pressing block. An extension post is formed on the pressing block. The extension post passes through the U-shaped extension rod and is locked and fixed by a connector. When the rotating block rotates, the pressing block can be driven to rotate synchronously through the U-shaped extension rod, so as to press the upper cover plate against the slide mechanism and restrict the support block from displacing relative to the base plate.

[0024] In the aforementioned flexible fixture applied to thin-walled parts, a guide post and an elastic element are also provided inside the upper cover plate. The elastic element is sleeved on the guide post, and a guide groove is provided inside the slide mechanism. The elastic element can be inserted into the guide groove synchronously with the guide post, so that the upper cover plate can be moved and pressed tightly against the slide mechanism.

[0025] In the aforementioned flexible clamp applied to thin-walled parts, the slide mechanism includes:

[0026] The slider is mounted on a base plate with slide rails distributed on both sides of the placement platform, and the slider is movably engaged with the slide rails.

[0027] A lower cover plate is disposed on the slider, and a contour groove is formed in the lower cover plate. A rotating shaft is formed at the end of the support block, and the rotating shaft is movably mounted in the contour groove.

[0028] In the aforementioned flexible fixture for thin-walled parts, a limiting groove is provided in the lower cover plate, the sliding seat includes a locking block and a connecting arm, the rotating rod is connected to the locking block, and the locking block is movably locked in the limiting groove; the connecting arm is disposed on one side of the locking block, the rotating shaft has an arc-shaped clearance groove along its radial direction, the connecting arm extends into the arc-shaped clearance groove, and is movably connected to the fixed rod.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] (1) The present invention provides a flexible clamp for thin-walled parts by using a ball cup with universal adjustable angle and a contouring plate to improve the flexibility of the clamp and meet the requirements of stable clamping of thin-walled parts at different positions; at the same time, under the one-press action of the unlocking handle, the two dead point positions can be locked, and the position of the contouring block can be locked on the one hand, and the fixed rod and the slide mechanism can be tightened on the other hand, thus ensuring the accuracy and stability of the contouring block when clamping the workpiece.

[0031] (2) The design of the scale indicator block allows the operator to accurately adjust the overall length of the rotating rod and the adjusting rod, thereby adapting to the contour block to complete the stable clamping of the workpiece at different positions, effectively avoiding positional interference between parts, and also completing the locking force of the ball cup under the formation of the second dead point, preventing deformation during clamping, and ensuring the processing accuracy of thin-walled parts.

[0032] (3) The guide post plays a certain guiding and limiting function when the upper cover plate is in contact with the lower cover plate. At the same time, under the buffering effect of the elastic element, it effectively prevents the collision damage between the parts, thereby extending the service life of the fixture.

[0033] (4) The locking function of the slider and the slide rail can be achieved by using the locking block to press against the inner wall of the limiting groove. The overall structure is simple, and the mechanical structure replaces the traditional electric drive structure, effectively avoiding the influence of external uncertainties on the clamping accuracy and stability of the fixture. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure when the workpiece to be processed is placed on the placement table;

[0035] Figure 2 This is a schematic diagram of the overall structure of this application;

[0036] Figure 3 This is a schematic diagram of the installation structure of the locking mechanism;

[0037] Figure 4 This is a schematic diagram of the installation structure between the locking mechanism, the sliding mechanism, the adjusting mechanism, and the telescopic mechanism;

[0038] Figure 5 yes Figure 4 Sectional view of EE;

[0039] Figure 6 This is a schematic diagram of the installation structure between the two semi-limiting rings, the ball cup, and the contour block;

[0040] Figure 7 It is an exploded view of the rotating rod, adjusting rod, support block, sliding seat, and lower cover plate.

[0041] In the diagram, 1 represents the workpiece;

[0042] 2. Substrate; 20. Placement stage; 21. Slide rail;

[0043] 3. Adjustment mechanism; 30. Ball cup; 31. Contouring block; 32. Support block; 320. Spherical groove; 321. Rotating shaft; 321a. Arc-shaped clearance groove; 33. Fixing rod; 330. Locking block; 34. Semi-limiting ring;

[0044] 4. Telescopic mechanism; 40. Sliding seat; 400. Locking block; 401. Connecting arm; 41. Rotating rod; 410. Adjusting hole; 42. Adjusting rod; 420. Connecting column; 421. Scale indicator block;

[0045] 5. Locking mechanism; 50. Drive arm; 500. Drive unit; 501. Extension unit; 502. Unlocking handle; 51. Pressing block; 510. Extension column; 52. First connecting plate; 520. First dead point; 53. Second connecting plate; 530. Second dead point; 54. Guide rail; 55. Moving seat; 56. Support plate; 560. Clearance groove; 561. Support rod; 57. Rotating block; 570. U-shaped extension rod; 58. Top cover plate; 580. Guide column; 581. Elastic element;

[0046] 6. Slide mechanism; 60. Slider; 61. Lower cover plate; 610. Contouring groove; 611. Limiting groove; 612. Guide groove. Detailed Implementation

[0047] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0048] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0049] like Figures 1 to 7 As shown, this utility model discloses a flexible clamp for thin-walled parts, used to clamp non-flat workpieces 1 to be processed, including a base plate 2, a placement stage 20, and a sliding table mechanism 6, an adjusting mechanism 3, a telescopic mechanism 4, and a locking mechanism 5 symmetrically distributed on both sides of the placement stage 20.

[0050] The placement stage 20 is mounted on the base plate 2, and the workpiece 1 to be processed is fixed in a vertical position on the placement stage 20. The adjustment mechanism 3 is movably mounted on the slide mechanism 6. The adjustment mechanism 3 is provided with a ball cup 30 and a contour block 31. The contour block 31 is connected to the ball cup 30 and can be moved to fit against the side wall of the workpiece 1 when the ball cup 30 adjusts its relative position with the adjustment mechanism 3. The slide mechanism 6 is movably mounted on the base plate 2 and is used to drive the adjustment mechanism 3 to move closer to or away from the placement stage 20 so that the contour block 31 can be moved to fit against the side wall of the workpiece 1 at different heights. The telescopic mechanism 4 is movably connected to the adjustment mechanism 3 to adapt to the distance between the slide mechanism 6 and the placement stage 20. The locking mechanism 5 includes a drive arm 50 and a clamping block 51. A first connecting plate 52 is movably disposed between the drive arm 50 and the locking mechanism 5, and a second connecting plate 53 is movably disposed between the drive arm 50 and the telescopic mechanism 4. The connection between the second connecting plate 53 and the telescopic mechanism 4 is movably disposed together in the locking mechanism 5. When the drive arm 50 drives the pressing block 51 to move and press the slide mechanism 6, the first connecting plate 52 forms a first dead point 520 with the drive arm 50, and at the same time, the second connecting plate 53 and the drive arm 50 form a second dead point 530. When the drive arm 50 drives the pressing block 51 to move and press the adjusting mechanism 3, the first dead point 520 is used to limit the displacement of the adjusting mechanism 3 relative to the base plate 2, and the second dead point 530 is linked to lock the slide mechanism 6 and the ball cup 30 so that the contour block 31 can clamp the workpiece 1.

[0051] Specifically, such as Figures 1 to 2 As shown, the flexible fixture consists of three sets of mechanisms for clamping the sidewalls of workpiece 1 on each of the left and right sides of the placement platform 20. First, it should be noted that the thin-walled portion of workpiece 1 in this embodiment is processed into three parts: upper, middle, and lower (i.e., corresponding to...). Figure 1 By performing multiple clamping operations (A / B / C), the upper, middle, and lower sections can be finished sequentially. In other words, when machining the upper thin-walled section (i.e.,...) Figure 1 During machining of area A in the workpiece 1, flexible fixtures are clamped on both sides of the middle section; the thin-walled middle section (i.e., Figure 1 During the machining of area B in the workpiece 1, the flexible fixtures clamp the lower two sides of the workpiece 1 respectively; the lower thin-walled section (i.e., Figure 1 During processing of area C in the middle, due to the proximity to the thick-walled part (i.e. Figure 1 The D-zone (in the image) has a certain rigidity, so it can be finished without clamping. For the placement of the entire thin-walled workpiece 1, this embodiment uses a coagulant to solidify the thick-walled portion (i.e.,...) Figure 1 The bottom wall of area D is adhered to the placement table 20 to ensure that the entire thin-walled workpiece 1 is placed in a vertical position. Preferably, the coagulant can be other chemicals such as acetone to assist in the removal of the processed thin-walled workpiece 1 from the placement table 20 without damage. In addition, it should be noted that the contour blocks 31 on both sides of the placement table 20 can be designed with convex or concave arc surfaces according to the shape of the thin-walled workpiece 1 to be clamped, so as to ensure the stable clamping operation of the contour blocks 31 on the thin-walled workpiece 1.

[0052] Furthermore, when the thin-walled workpiece 1 is placed on the placement stage 20, the sliding mechanism 6 can move along the length of the substrate 2 according to the size and shape of the workpiece 1, so that the adjusting mechanism 3 can move closer to or further away from the placement stage 20, thereby allowing the contour block 31 to fit against different height positions of the workpiece 1. During this process, the adjusting mechanism 3 can rotate relative to the sliding mechanism 6. With the rotation of the ball cup 30, the contour block 31 can finally fit against the A / B / C areas of the side wall of the thin-walled workpiece 1 in a horizontal posture. After the angle is adjusted, the driving arm 50 is pressed down to force it to move along the length of the substrate 2. Figure 3 Rotate clockwise to Figure 4 In the indicated state, the clamping block 51 gradually presses against the slide mechanism 6, while the first dead point 520 formed by the first connecting plate 52 and the drive arm 50 ensures the stability of the position of the adjusting mechanism 3. Simultaneously, the rotation of the drive arm 50 can trigger the second connecting plate 53 to form a second dead point 530. Finally, the extension mechanism 4 pulls the adjusting mechanism 3, allowing the ball cup 30 and the contour block 31 to clamp the sidewall of the thin-walled workpiece 1 in a stable posture. Therefore, in this embodiment, the fixture, through the cooperation of the ball cup 30 and the adjusting mechanism 3, ensures that the contour block 31 can be adjusted to the most suitable angle to complete the clamping of the thin-walled workpiece 1 at different positions (i.e., corresponding to...). Figure 1 The stable clamping of the A / B / C components greatly enhances the flexibility and application range of the fixture. At the same time, with one locking action of the locking mechanism 5, the position of the contour block 31 can be locked simultaneously using the two dead points, and the slide mechanism 6, in conjunction with the telescopic mechanism 4, can tighten the ball cup 30, thereby ensuring the accuracy and stability of the contour block 31 when clamping the workpiece 1.

[0053] The drive arm 50 comprises a drive part 500, an extension part 501 and an unlocking handle 502 arranged at an angle to each other, and the common connection point of the drive part 500, the extension part 501 and the unlocking handle 502 is movably hinged to the first connecting plate 52.

[0054] like Figure 3 and Figure 4As shown, when it is necessary to clamp the thin-walled workpiece 1 on the placement table 20, the unlocking handle 502 can be subjected to external force (which can be manual operation) to cause the drive unit 500 and the extension unit 501 to rotate synchronously. Since the drive unit 500, the extension unit 501 and the unlocking handle 502 are all set at a certain angle to each other, the connection between the three will inevitably change position with the rotation. After the drive unit 500 moves, the first connecting plate 52 and the second connecting plate 53 are driven at the same time until the unlocking handle 502 reaches the position of the workpiece 1. Figure 4 When the clamping position is shown, the clamping block 51 completely clamps and fixes the adjusting mechanism 3 within the slide mechanism 6. The first dead point 520 formed by the collinearity of the first connecting plate 52 and the drive arm 50 (being on the same straight line) effectively restricts any movement of the adjusting mechanism 3 relative to the base plate 2, ensuring that the contour block 31 can be stably in the optimal clamping position to complete the clamping of the thin-walled workpiece 1.

[0055] The telescopic mechanism 4 includes: a sliding seat 40, which is movably disposed within the slide mechanism 6 and is movably connected to the adjustment mechanism 3; a rotating rod 41 and an adjusting rod 42, one end of the rotating rod 41 being movably hinged to the sliding seat 40 and the other end forming an adjustment hole 410; one end of the adjusting rod 42 having a connecting post 420 and a scale indicator block 421 respectively formed on both side walls, the connecting post 420 passing through the adjustment hole 410 and being connected by fasteners, and the scale indicator block 421 being used to display the overall length of the adjusting rod 42 and the rotating rod 41; the other end of the adjusting rod 42 and the second connecting plate 53 are movably connected to the locking mechanism 5.

[0056] Preferably, such as Figures 3 to 5 As shown, before the unlocking handle 502 is pressed down, the adjusting mechanism 3 has already adjusted the contour block 31 to the required height and position through the displacement of the slide mechanism 6 on the base plate 2 and the rotation of the ball cup 30. In order to adapt to the slide mechanism 6 and the adjusting mechanism 3 at different positions on the base plate 2, this embodiment designs the rotating rod 41 and the adjusting rod 42 as a telescopic structure. Unlike conventional mechanical structures, the user can adjust the overall length of the rotating rod 41 and the adjusting rod 42 very precisely according to the position of the slide mechanism 6 and the adjusting mechanism 3. Figure 4 and Figure 7 As shown, connecting posts 420 are used to connect to different positions of the adjusting hole 410. As fasteners (bolts, screws, or other connecting components can be used) tighten the connecting posts 420, the relative positions of the rotating rod 41 and the adjusting rod 42 are ensured to be stable. This also allows the adjusting mechanism 3 and the sliding table mechanism 6 to have sufficient space, ensuring that the contour block 31 can flexibly move over the thin-walled workpiece 1 without moving the locking mechanism 5 relative to the base plate 2. Figure 1The clamping operation of the A / B / C zones shown effectively avoids jamming between the relative movements of the various components, which would affect the smoothness and accuracy of clamping the thin-walled workpiece 1.

[0057] In a further preferred embodiment, a scale is also provided on the rotating rod 41. The scale indicator block 421 indicates the scale, allowing the operator to precisely adjust the overall length of the telescopic mechanism 4. This ensures the accuracy of the subsequent clamping of the thin-walled workpiece 1 by the contour block 31. Thus, simple length adjustment reduces adjustment time and improves work efficiency. Furthermore, the combined design of the sliding seat 40, rotating rod 41, and adjusting rod 42 allows the telescopic mechanism 4 to flexibly adapt to workpieces 1 of different sizes and shapes, improving the versatility and applicability of the equipment.

[0058] The locking mechanism 5 is provided with a guide rail 54 along the vertical direction. A movable seat 55 is movably engaged on the guide rail 54. One end of the second connecting plate 53 is movably hinged to the extension 501. The other end of the second connecting plate 53 and the end of the adjusting rod 42 away from the rotating rod 41 are both hinged to the movable seat 55 so that a second dead point 530 is formed when the second connecting plate 53 and the extension 501 are collinear.

[0059] like Figure 3 and Figure 4 As shown, when the user applies downward pressure to the unlocking handle 502, the extension 501 rotates, pushing the second connecting plate 53 to rotate. Since the adjusting rod 42 and the second connecting plate 53 are hinged together within the moving base 55, the movement of the second connecting plate 53 causes the moving base 55 to move downward along the guide rail 54 until the second connecting plate 53 and the extension 501 are collinear, forming a second dead point 530 (i.e., Figure 4 As shown in the diagram, at the second dead point 530, the movable seat 55 is fixed, thereby locking the entire telescopic mechanism 4 and ensuring that the positions of the adjusting rod 42 and the rotating rod 41 do not change. When it is necessary to release the clamp, the operator can release the locking state of the first dead point 520 and the second dead point 530 by pulling the unlocking handle 502 (i.e., the unlocking handle 502 moves along the first dead point 520 and the second dead point 530). Figure 4 (Unlocking can be achieved by rotating counterclockwise). During the unlocking process, the movable seat 55 can move upward along the guide rail 54, thereby restoring the second connecting plate 53 to its initial position, facilitating the readjustment or unloading of the workpiece 1 by the contour block 31. Thus, the cooperation between the guide rail 54 and the movable seat 55 provides sufficient displacement space for the adjusting rod 42 and rotating rod 41 to adapt to the positions of the adjusting mechanism 3 and the slide mechanism 6, and also utilizes the formed second dead point 530 to provide an additional mechanical locking mechanism, ensuring that no accidental loosening or displacement occurs during processing, thereby improving the stability of the fixture.

[0060] The adjustment mechanism 3 also includes: a support block 32, one end of which is movably disposed within the slide mechanism 6, and the other end of which forms a spherical groove 320, with the ball cup 30 movably connected within the spherical groove 320; a fixing rod 33, which is disposed within the support block 32, one end of which forms a locking block 330, which is movably pressed against the inner wall of the ball cup 30 to restrict the ball cup 30 from rotating within the spherical groove 320; and the other end of the fixing rod 33 is movably connected to the sliding seat 40.

[0061] like Figures 2 to 5 As shown, when it is necessary to process areas A / B / C at different heights of the thin-walled workpiece 1, the clamping position of the contour block 31 on the thin-walled workpiece 1 needs to be adjusted accordingly. Specifically, this is achieved by adjusting the clamping position of the contour block 31 around the workpiece 1. Figure 5 The right end of the slide mechanism 6 rotates clockwise or counterclockwise, thereby driving the fixed rod 33 inside the support block 32 to rotate synchronously, ultimately... Figure 5 The ball cup 30 at the left end of the support block 32 is raised or lowered to the corresponding clamping area (any one of area A / B / C). At this time, the ball cup 30 can rotate freely in the spherical groove 320 so as to adjust the contour block 31 to a suitable position, thereby ensuring the stability of the contour block 31 when accurately clamping the thin-walled workpiece 1.

[0062] It should be noted that during the above operation, the locking block 330 is completely inside the ball cup 30 (i.e., it is not in contact with the inner wall of the ball cup 30). When the contour block 31 is accurately pressed against the designated clamping area of ​​the workpiece 1, the unlocking handle 502 is pressed down. Figure 4 The posture shown allows the sliding seat 40 to be tightened by utilizing the formed second dead point 530, as shown. Figure 5 As shown, during the tightening process within the sliding seat 40, it means that the sliding seat 40 can drive the locking block 330 to move inward toward the support block 32 via the fixed rod 33 (i.e., Figure 5 (Moving from left to right), thereby causing the locking block 330 (the curvature of the outer wall of the locking block 330 is consistent with the curvature of the inner wall of the ball bowl 30) to move and fit tightly against the annular inner wall of the ball bowl 30, ultimately achieving the purpose of restricting the relative rotational movement of the ball bowl 30 within the spherical groove 320. This also ensures the stability of the contour block 31 connected to the ball bowl 30 during the clamping process of the thin-walled workpiece 1. Therefore, this embodiment, through the design of the ball bowl 30 and the spherical groove 320, can achieve fine adjustments in multiple directions and angles, ensuring that the contour block 31 can closely conform to various irregular shapes on the surface of the workpiece 1, improving the adaptability and accuracy of the fixture. The design of the locking block 330 effectively restricts the rotation of the ball bowl 30 within the spherical groove 320, avoiding inaccurate positioning due to excessive rotation. This design ensures the stability of the ball bowl 30's position during processing, improving the reliability of the entire fixture.

[0063] Preferably, such as Figure 6 As shown, in this embodiment, two semi-limiting rings 34 are detachably connected to the end of the support block 32 near the placement table 20. As the ball cup 30 is pre-assembled into the spherical groove 320, the semi-limiting rings 34 can be detachably connected to the support block 32 by bolts or other fixing methods, ensuring that they can be easily disassembled and assembled when adjustment or maintenance is required, reducing adjustment time and improving work efficiency. When the two semi-limiting rings 34 are pressed together, they form a complete ring structure around the ball cup 30. It is worth noting that the diameter of the ring structure formed by the two semi-limiting rings 34 in this embodiment is slightly smaller than the maximum diameter of the ball cup 30. This way, while not affecting the angle adjustment of the ball cup 30 driving the contour block 31, it can effectively prevent the ball cup 30 from accidentally dislodging from the spherical groove 320 due to vibration or impact during processing, thus improving the safety and reliability of the fixture.

[0064] The locking mechanism 5 further includes: a support plate 56, which is disposed on the placement table 20. One end of the first connecting plate 52 is movably hinged to the support plate 56, and the other end is hinged to the common connection point of the drive part 500, the extension part 501, and the unlocking handle 502, so that a first dead point 520 is formed when the drive part 500 and the first connecting plate 52 are collinear; a rotating block 57, one end of which is hinged to the support plate 56, and the other end of which is hinged to the drive part 500. A U-shaped extension rod is vertically connected to the rotating block 57; and an upper cover plate 58, which is connected to the bottom of the pressing block 51. An extension post 510 is formed on the pressing block 51. The extension post 510 passes through the U-shaped extension rod and is locked and fixed by a connector, so that when the rotating block 57 rotates, it can drive the pressing block 51 to rotate synchronously through the U-shaped extension rod, so as to press the upper cover plate 58 against the slide mechanism 6 and restrict the support block 32 from displacing relative to the base plate 2.

[0065] Preferably, in addition to the above-described structure, the locking mechanism 5 in this embodiment also includes a support plate 56, a rotating block 57, and an upper cover plate 58. Specifically, as shown below... Figure 3 As shown, when the unlocking handle 502 is rotated clockwise to... Figure 3 The state shown (i.e., during the unlocking process, the unlock handle 502 along) Figure 3Rotating counterclockwise will move the upper cover plate 58 away from the slide mechanism 6, and the rotating block 57 will rotate around its connection with the support plate 56 toward the slide mechanism 6. Since the U-shaped extension rod is perpendicular to the rotating block 57, it can transmit the movement of the rotating block 57 to the clamping block 51, thereby causing the clamping block 51 to move the upper cover plate 58 to clamp the right end of the support block 32 and stably press it against the slide mechanism 6. That is, when it is necessary to clamp the workpiece 1, the drive arm 50 applies external force through the drive part 500, causing the first connecting plate 52 and the rotating block 57 to move simultaneously. The first connecting plate 52 drives the drive part 500 and the first dead point 520 to lock. The rotating block 57 drives the clamping block 51 to move downward through the U-shaped extension rod, pressing the upper cover plate 58 against the slide mechanism 6 to achieve full locking. When it is necessary to release the clamp, the operator pulls the unlocking handle 502 to release the locking state of the first dead point 520 and the second dead point 530 (i.e., the unlocking handle 502 moves along the first dead point 520 and the second dead point 530). Figure 3 (Rotate counterclockwise) After unlocking, the rotating block 57 and the U-shaped extension rod return to their initial positions, and the clamping block 51 is lifted, which facilitates readjustment or unloading of workpiece 1. It is precisely because of the dual locking mechanism of the first dead point 520 and the second dead point 530 that the entire fixture will not loosen or shift unexpectedly during the processing, which greatly improves the stability and reliability of workpiece 1 during clamping and processing.

[0066] Preferably, in this embodiment, the connection between the U-shaped extension rod and the clamping block 51 is achieved by having an extension post 510 formed on the clamping block 51 pass through the U-shaped extension rod and be locked in place by a connector (such as a bolt). This allows the rotating block 57 to rotate synchronously with the clamping block 51 via the U-shaped extension rod. During this process, this structure effectively prevents any slippage between the two, thus avoiding misalignment of the upper cover plate 58 when pressing against the slide mechanism 6, thereby ensuring the stability of the fixture during operation. It should be noted that the extension post 510 in this embodiment may be provided with external threads (not shown in the figure). After the extension post 510 passes through the U-shaped extension rod, it can be connected by a locking nut (not shown in the figure) to further ensure the stability of the connection between the U-shaped extension rod and the clamping block 51. Preferably, the connection between the rotating rod 41 and the adjusting rod 42 in the telescopic mechanism 4 can also be achieved using this method on the connecting post 420. The working principle is the same as described above and will not be elaborated further here.

[0067] The upper cover plate 58 is also provided with a guide post 580 and an elastic element 581. The elastic element 581 is sleeved on the guide post 580. The slide mechanism 6 is provided with a guide groove 612. The elastic element 581 can be inserted into the guide groove 612 synchronously with the guide post 580, so that the upper cover plate 58 can move and fit tightly against the slide mechanism 6.

[0068] More preferably, such as Figure 3 As shown, when the unlocking handle 502 is rotated to... Figure 3 During the process shown, the upper cover plate 58 gradually moves closer to the slide mechanism 6 by the rotation of the rotating block 57. During the downward movement, the guide post 580 enters the guide groove 612 of the slide mechanism 6, and at the same time, the elastic element 581 begins to compress. As the guide post 580 gradually penetrates deeper into the guide groove 612, the elastic element 581 is further compressed, providing a continuous reaction force, so that the upper cover plate 58 always remains tightly fitted to the slide mechanism 6. When the upper cover plate 58 is fully pressed against the slide mechanism 6, the guide post 580 is fully inserted into the guide groove 612. The design of the guide post 580 and the guide groove 612 ensures that the upper cover plate 58 can accurately fit against the slide mechanism 6, avoiding the problem of inaccurate pressing due to offset. At this time, the elastic element 581 is in the maximum compression state, generating sufficient reaction force to maintain a stable pressing force. The design of the elastic element 581 provides a buffer function, which can absorb impact and vibration during the pressing process and prevent damage to the workpiece 1 and the equipment. Furthermore, the elastic element 581 provides additional clamping force to ensure that the upper cover plate 58 always fits tightly against the slide mechanism 6. At this time, the first dead point 520 and the second dead point 530 have been formed, and the entire fixture is locked to ensure the stable clamping of the profile block 31 on the side wall of the thin-walled workpiece 1.

[0069] Further preferably, this embodiment also provides a clearance groove 560 at the top of the support plate 56. This clearance groove 560 provides sufficient space for the rotation of the drive part 500, the extension part 501, the unlocking handle 502, and the first connecting plate 52, effectively preventing positional interference between components during the switching between unlocking and locking states of the clamp, which could cause jamming or even collision damage. Additionally, this embodiment also provides a support rod 561 on the side of the support plate 56 facing the outside of the base plate 2, such as... Figure 2 As shown, while the user operates the unlocking handle 502 with one hand to rotate it to unlock or lock, the other hand can grip the support rod 561 to facilitate the user's overall operation. This provides great convenience for the operator during use under effective support force.

[0070] The slide mechanism 6 includes: a slider 60, on which slide rails 21 distributed on both sides of the placement stage 20 are mounted, and the slider 60 is movably engaged with the slide rails 21; a lower cover plate 61 is disposed on the slider 60, and a contour groove 610 is formed in the lower cover plate 61; a rotating shaft 321 is formed at the end of the support block 32, and the rotating shaft 321 is movably mounted in the contour groove 610.

[0071] like Figures 2 to 5As shown, when the angle of the support block 32 needs to be adjusted, the slider 60 moves horizontally along the slide rail 21, thereby adjusting the position of the support block 32 and the contour block 31 to adapt to different clamping areas. Figure 1 As shown in the diagram (areas A, B, and C), this allows the slide mechanism 6 to flexibly adapt to various non-flat and complex-shaped workpieces 1, enhancing the versatility and applicability of the fixture. The design of the contour groove 610 allows the support block 32 to rotate freely within a certain range, serving as a limit and guide, which helps improve the accuracy of the support block 32 in adjusting the position of the contour block 31. Furthermore, as the upper cover plate 58 (which also has the same contour groove 610 structure, not shown in the figure) moves to fit against the lower cover plate 61, the first dead point 520 can effectively limit the displacement or rotation of the support block 32.

[0072] The lower cover plate 61 is provided with a limiting groove 611. The sliding seat 40 includes a locking block 400 and a connecting arm 401. The rotating rod 41 is connected to the locking block 400, and the locking block 400 is movably locked in the limiting groove 611. The connecting arm 401 is provided on one side of the locking block 400. The rotating shaft 321 has an arc-shaped clearance groove 321a along its radial direction. The connecting arm 401 extends into the arc-shaped clearance groove 321a and is movably connected to the fixed rod 33.

[0073] Preferably, such as Figure 3 and Figure 7 As shown, the unlocking handle 502 reaches its destination after being rotated. Figure 3When the clamping state is shown, the extension 501 rotates, driving the second connecting plate 53 to move vertically along the guide rail 54 via the moving seat 55. Simultaneously, the locking block 400 is movably engaged with the side wall of the limiting groove 611 away from the placement table 20 by the rotating rod 41 and adjusting rod 42. With the formation of the second dead point 530 (the extension 501 and the second connecting plate 53 are collinear), the locking block 400 is locked within the limiting groove 611 while restricting the displacement of the moving seat 55. This method ultimately achieves tension on the lower cover plate 61, the slider 60, and the locking block 330 at the distal end of the fixing rod 33. Thus, a simple mechanical mechanism achieves complex adjustment, clamping, and locking functions, reducing operation steps, lowering operational difficulty, and improving work efficiency. Further preferably, the design of the connecting arm 401 within the arc-shaped clearance groove 321a in this embodiment not only provides flexible angle adjustment but also absorbs impact and vibration to a certain extent, preventing damage to the workpiece 1 and the clamping fixture. Similarly, since the guide groove 612 in this embodiment is located in the lower cover plate 61, when the pressing block 51 drives the upper cover plate 58 to move and press against the lower cover plate 61, the formation of the first dead point 520 can effectively restrict the support block 32 from flipping. This also ensures the stability of the position of the ball cup 30 and the contour block 31 at the end of the support block 32.

[0074] It should be noted that the movable connection and movable hinge referred to in this embodiment can be assembled between the two parts by connecting pins. In addition, the elastic element 581 in this embodiment can be replaced by other elastic devices such as compression springs and return springs.

[0075] It should be noted that in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly defined. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly defined. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0076] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0077] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A flexible fixture for thin-walled parts for clamping non-flat workpieces to be machined, characterized in that, The device comprises a base plate, a placing table, slide table mechanisms, position adjusting mechanisms, telescopic mechanisms and locking mechanisms symmetrically arranged on both sides of the placing table; The placing table is arranged on the base plate, and a workpiece to be processed is fixed on the placing table in a vertical posture; The position adjusting mechanism is movably arranged on the slide table mechanism, and a ball bowl and a profiling block are arranged on the position adjusting mechanism. The profiling block is connected to the ball bowl and can be movably attached to the sidewall of the workpiece when the ball bowl adjusts the relative position between the profiling block and the position adjusting mechanism. The slide table mechanism is movably arranged on the base plate and used to drive the position adjusting mechanism to approach or move away from the placing table, so that the profiling block is movably attached to the sidewall of the workpiece at different height positions. The telescopic mechanism is movably connected to the position adjusting mechanism to adapt to the distance between the slide table mechanism and the placing table. The locking mechanism comprises a driving arm and a pressing block. A first connecting plate is movably arranged between the driving arm and the locking mechanism. A second connecting plate is movably arranged between the driving arm and the telescopic mechanism. The connection between the second connecting plate and the telescopic mechanism is movably arranged in the locking mechanism. When the driving arm drives the pressing block to movably press the slide table mechanism, the first connecting plate forms a first dead point with the driving arm, and the second connecting plate and the driving arm form a second dead point. When the driving arm drives the pressing block to movably press the position adjusting mechanism, the first dead point is used to limit the displacement of the position adjusting mechanism relative to the base plate, and the second dead point is used to lock the slide table mechanism and the ball bowl, so that the profiling block clamps the workpiece.

2. The flexible fixture for thin-walled parts of claim 1, wherein, The driving arm comprises driving parts, extension parts and unlocking handles arranged at an angle between adjacent parts. The common connection of the driving parts, the extension parts and the unlocking handles is movably connected with the first connecting plate.

3. The flexible fixture for thin-walled parts of claim 2, wherein, The telescopic mechanism comprises: A sliding seat movably arranged in the slide table mechanism, the sliding seat is movably connected to the position adjusting mechanism; A rotating rod and an adjusting rod. One end of the rotating rod is movably connected to the sliding seat, and the other end forms an adjusting hole. One end of the adjusting rod forms a connecting column and a scale indicating block on the two side walls, respectively. The connecting column can penetrate the adjusting hole and be connected by a fastener. The scale indicating block is used to display the overall length of the adjusting rod and the rotating rod. The other end of the adjusting rod is movably arranged in the locking mechanism together with the second connecting plate.

4. The flexible fixture for thin-walled parts of claim 3, wherein, A guide rail is arranged on the locking mechanism in the vertical direction. A moving seat is movably connected to the guide rail. One end of the second connecting plate is movably connected to the extension part. The other end of the second connecting plate is movably connected to the moving seat together with the end of the adjusting rod away from the rotating rod, so that the second connecting plate and the extension part are collinear to form the second dead point.

5. The flexible fixture of claim 3, wherein The position adjusting mechanism further comprises: A support block. One end of the support block is movably arranged in the slide table mechanism, and the other end forms a spherical groove. The ball bowl is movably connected in the spherical groove. A fixed rod is arranged in the support block, one end of the fixed rod is formed with a locking block, the locking block is movably attached to the inner wall of the ball bowl to limit the rotation of the ball bowl in the spherical groove; the other end of the fixed rod is movably connected to the sliding seat.

6. The flexible fixture of claim 5, wherein, The end of the support block close to the placing table is also detachably connected with two half-limiting rings, the half-limiting rings can limit the ball bowl from separating out of the spherical groove when abutting against each other.

7. The flexible fixture of claim 5, wherein, The locking mechanism further comprises: A support plate is arranged on the placing table, one end of the first connecting plate is movably hinged to the support plate, and the other end is hinged to the common connection of the driving part, the extension part and the unlocking handle to form the first dead point when the driving part and the first connecting plate are collinear; A rotating block is hinged at one end to the support plate and at the other end to the driving part, a U-shaped extension rod is vertically connected to the rotating block; An upper cover plate is connected to the bottom of the pressing block, an extension column is formed on the pressing block, the extension column penetrates the U-shaped extension rod and is locked and fixed by a connecting piece, so that the rotating block can drive the pressing block to rotate synchronously through the U-shaped extension rod when the rotating block rotates, so as to press the upper cover plate on the sliding table mechanism and limit the displacement of the support block relative to the base plate.

8. The flexible fixture of claim 7, wherein, A guide column and an elastic member are further arranged in the upper cover plate, the elastic member is sleeved on the guide column, a guide groove is formed in the sliding table mechanism, and the elastic member can be inserted in the guide groove synchronously with the guide column, so that the upper cover plate is movably attached to the sliding table mechanism.

9. The flexible fixture of claim 5, wherein, The sliding table mechanism comprises: A sliding block is movably clamped on the slide rail installed on the base plate and distributed on both sides of the placing table; A lower cover plate is arranged on the sliding block, a profiled groove is formed in the lower cover plate, and an rotating shaft is formed at the end of the support block and movably installed in the profiled groove.

10. The flexible fixture of claim 9, wherein, A limiting groove is arranged in the lower cover plate, the sliding seat comprises a clamping block and a connecting arm, the rotating rod is connected to the clamping block, the clamping block is movably clamped in the limiting groove, the connecting arm is arranged on one side of the clamping block, the rotating shaft is formed with an arc-shaped avoiding groove in the radial direction, the connecting arm extends into the arc-shaped avoiding groove and is movably connected to the fixed rod.

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