Floating clamp mechanism and clamp

Abstract

The present application relates to the technical field of workpiece clamping tooling, and provides a floating clamping mechanism and a clamp, the floating clamping mechanism comprising: a driving piece with an output part, a moving block connected with the output part through a floating connection structure, two oppositely arranged clamping blocks, and a bevel transmission structure arranged between the moving block and the clamping blocks. The floating connection structure can transmit power and make the moving block swing slightly, and drive the clamping blocks to open and close in cooperation with the bevel transmission. The mechanism can adapt to the deformation and position deviation of the thin wall and inner hole of the die-casting workpiece, dynamically balance the clamping thrust, effectively improve the uneven stress problem, and is stable and reliable in clamping, and is suitable for batch clamping operation of the die-casting workpiece.

Description

Technical Field

[0001] This invention belongs to the field of workpiece clamping fixture technology, specifically relating to a floating clamping mechanism and fixture. Background Technology

[0002] In the field of precision machining of die-cast parts, die-cast parts generally exhibit characteristics such as thinner wall thickness and poorer structural rigidity in local clamping areas after forming. During die casting, demolding and cooling, material transfer, and preliminary machining, the thin-walled clamping areas are prone to irregular micro-deformation due to residual stress, temperature deformation, and cumulative machining errors. In actual clamping operations, the workpiece usually relies on its own rigid reference surface for overall positioning and fixation. However, the clamping areas with thin-walled deformation may experience inconsistencies in the spatial positions of clamping points for batches of workpieces and misalignment of clamping points on both sides of a single workpiece. This results in objective spatial positional deviations in the thin-walled areas to be clamped, making it impossible to maintain a standard coaxial and aligned state.

[0003] Currently, most conventional clamping mechanisms employ rigid, fixed clamping structures. Their clamping force application positions and contact surface shapes are fixed and non-adjustable, lacking adaptive adjustment capabilities. For die-cast workpieces exhibiting thin-wall deformation and spatial offset of clamping points, the clamping stroke and force application angle of fixed clamping mechanisms cannot be adapted to the actual deformation state of the workpiece. Once the fixture is fixed via the workpiece reference position, the spatial deviation of the thin-walled clamping positions on both sides of the workpiece cannot be compensated. This results in inconsistent contact between the rigid clamping structure and the clamping parts on both sides of the workpiece, ultimately leading to a typical problem of uneven force distribution on one side: one side of the workpiece clamping part is tightly fitted to the fixture and bears a large clamping force, while the other side clamping part has assembly gaps and experiences little or no force.

[0004] The aforementioned defects in fixed rigid clamping prevent the clamping mechanism from achieving a uniform and stable bidirectional clamping and fixing effect on deformed die-cast workpieces. During workpiece processing, the imbalance of forces on both sides of the clamping easily leads to problems such as offset, wobbling, and micro-jumping, directly reducing the machining accuracy of the workpiece and significantly increasing the product defect rate. At the same time, the thin-walled workpiece on the overloaded side will be further squeezed, causing secondary deformation damage and exacerbating the problem of workpiece dimensional deviations; moreover, the clamping mechanism will suffer from localized wear and structural fatigue on the clamping working surface due to long-term unilateral load operation, significantly reducing the service life of the fixture and increasing equipment maintenance and manufacturing costs. It is completely unsuitable for the high-precision, high-stability batch clamping and processing requirements of thin-walled deformed die-cast workpieces.

[0005] In summary, existing conventional rigid clamping mechanisms have fixed structures and lack adaptive adjustment capabilities. For die-cast workpieces with thin-walled deformation and inconsistent clamping point positions, they generally suffer from uneven clamping force, poor workpiece fixation reliability, susceptibility to secondary workpiece deformation, and severe fixture wear. Therefore, there is an urgent need to design a floating clamping mechanism with adaptive force adjustment capabilities and the ability to dynamically balance the clamping pressure on both sides, in order to overcome the many shortcomings of existing technologies. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a floating clamping mechanism and fixture in light of the current state of the prior art.

[0007] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: a floating clamping mechanism is proposed, comprising: a driving member having an output part; A movable block is connected to the output of the drive unit via a floating connection structure; the floating connection structure transmits motion from the output unit in the driving direction of the drive unit and provides a pivoting degree of freedom to allow the movable block to swing relative to the output unit about an axis traversing the driving direction. Two opposing clamping blocks, both of which are movably mounted on the drive member; and An inclined plane transmission structure, formed between the moving block and the two clamping blocks, is used to drive the two clamping blocks to move closer or further apart when the moving block moves along the driving direction; wherein... The moving block can swing due to the reaction force generated by its interaction with the clamping blocks, causing the pressure distribution at the contact surface between the moving block and the two clamping blocks to change dynamically, so as to adaptively adjust the thrust applied to the two clamping blocks.

[0008] In the aforementioned floating clamping mechanism, the floating connection structure includes a pin disposed on the output section and an oblong hole disposed on the moving block, wherein the pin is inserted into the oblong hole; wherein the ratio of the length L of the oblong hole to the diameter D of the pin is configured to limit the swing angle of the moving block within a preset range α.

[0009] In the aforementioned floating clamping mechanism, a groove is provided at one end of the moving block facing the clamping block, and two first inclined surfaces are provided on the groove. Second inclined surfaces are provided on the side walls of the two clamping blocks that are opposite to each other. The first inclined surfaces and the second inclined surfaces correspond one-to-one and move against each other to form the inclined surface transmission structure.

[0010] In the aforementioned floating clamping mechanism, an elastic element is disposed between the two clamping blocks, and positioning blind holes for accommodating the two ends of the elastic element are respectively formed on the two clamping blocks; wherein... The elastic element always applies an elastic force to the two clamping blocks to push them away from each other, so as to push the two clamping blocks away from each other when the driving element drives the moving block to move in the opposite direction.

[0011] In the aforementioned floating clamping mechanism, a protrusion is provided on the side of the moving block facing the clamping block, and two first inclined surfaces are provided on the protrusion. A second inclined surface is provided on the sidewalls of the two clamping blocks that are close to each other. The first inclined surface and the second inclined surface correspond one-to-one and move against each other to form the inclined surface transmission structure.

[0012] In the aforementioned floating clamping mechanism, an elastic element is provided between the ends of the two clamping blocks that are far apart from each other and the driving member. The elastic element always applies an elastic force to the two clamping blocks to make them move closer to each other, so as to push the two clamping blocks closer to each other when the driving member drives the moving block to move in the opposite direction.

[0013] The floating clamping mechanism described above further includes a fixing block fixedly disposed on the driving member, the fixing block having an axially penetrating inner cavity; The movable block is disposed in the inner cavity, and a fitting gap is formed between its outer wall and the inner wall of the inner cavity; in, The clearance is used to allow the moving block to deflect at an angle in the inner cavity when it swings about the axis of the pin, while the inner wall of the inner cavity blocks its planar displacement perpendicular to the driving direction.

[0014] In the aforementioned floating clamping mechanism, a locking block is provided at the end of the fixed block away from the driving member, a guide groove is formed between the fixed block and the locking block, and both clamping blocks are disposed in the guide groove to provide guidance for the movement of the clamping blocks.

[0015] In the aforementioned floating clamping mechanism, the moving direction of the moving block is coplanar with and perpendicular to the moving directions of the two clamping blocks.

[0016] In order to solve the above-mentioned technical problems, the present invention also proposes a clamp, including the above-mentioned floating clamping mechanism.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] (1) By setting up a drive unit with an output section, a moving block connected by a floating connection structure, two sets of clamping blocks arranged opposite to each other, and an inclined plane transmission structure between the moving block and the clamping block, the driving force is transmitted by the floating connection structure and the moving block is given the ability to pivot and swing. The clamping block opening and closing action is realized in conjunction with the inclined plane transmission. This solves the technical problem that the clamping point is not consistent due to deformation and size deviation in the thin-walled area and inner hole position of the die-cast workpiece, and the conventional clamping mechanism is not subjected to uneven force on both sides and the workpiece cannot be reliably fixed. It realizes dynamic adaptive adjustment of clamping pressure, so that the workpiece is subjected to uniform force on both sides, greatly improves clamping stability and clamping reliability, and avoids secondary deformation of the workpiece.

[0019] (2) By setting a pin in the output part of the drive component and opening a waist-shaped hole in the moving block to form a floating connection structure, and limiting the ratio of the length L of the waist-shaped hole to the diameter D of the pin to constrain the swing angle of the moving block, the technical problems of uncontrollable swing of the floating structure, excessive swing angle causing clamping offset and unstable operation of the mechanism are solved. While ensuring the adaptive adjustment capability, the swing range is precisely controlled, taking into account the adjustment flexibility of the mechanism and the overall operation stability.

[0020] (3) By configuring different types of inclined plane transmission structures between the moving block and the clamping block, and matching them with different types of elastic components, and adding a fixed block with an inner cavity and a guide groove structure, the technical problems of a single structure being unable to simultaneously adapt to the two working conditions of external clamping and internal hole support of the workpiece, the easy deviation of the clamping block movement, and the untimely reset of the mechanism are solved. It can meet the diverse clamping needs of external clamping and internal support of die-casting workpieces, ensure accurate movement guidance of the clamping block and rapid action reset, expand the scope of application of the mechanism and improve the overall work efficiency. Attached Figure Description

[0021] Figure 1 This is a perspective view of a fixture in operation according to the present invention.

[0022] Figure 2 This is a perspective view of an embodiment of a floating clamping mechanism according to the present invention.

[0023] Figure 3 yes Figure 2 A partial sectional view.

[0024] Figure 4 This is a perspective view of one embodiment of the movable block.

[0025] Figure 5 This is a perspective view of one embodiment of the clamping block.

[0026] In the figure, 100 is the floating clamping mechanism; 110 is the driving component; 111 is the output part; 112 is the pin; 120 is the moving block; 121 is the waist-shaped hole; 122 is the first inclined surface; 130 is the clamping block; 131 is the second inclined surface; 132 is the positioning blind hole; 140 is the fixing block; 141 is the inner cavity; 150 is the locking block; and 200 is the workpiece. Detailed Implementation

[0027] 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.

[0028] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention 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 indication will also change accordingly.

[0029] This embodiment discloses a floating clamping mechanism 100, which is applied to the precision clamping and processing of die-cast workpieces 200. It is particularly suitable for clamping operations of die-cast workpieces 200 that are thin-walled, easily deformable, and have deviations in the spatial position of the clamping points. It can effectively solve the technical problems of uneven clamping force, poor workpiece 200 fixation stability, and easy secondary deformation of traditional rigid clamping mechanisms. It can adaptively adjust the clamping thrust and dynamically balance the clamping pressure on both sides to ensure the clamping accuracy and processing consistency of the die-cast workpiece 200. It has a compact structure, strong adaptability, and is suitable for the batch processing and production needs of high-precision die-cast workpieces 200. Example 1

[0030] This embodiment is an internal clamping structure of a floating clamping mechanism 100, used to clamp the workpiece 200 clamping part located between two clamping blocks 130, and is suitable for clamping die-cast workpieces 200 that are thin-walled, easily deformable, and have spatial deviations in their clamping points. The floating clamping mechanism 100 includes a driving member 110, a moving block 120, two oppositely arranged clamping blocks 130, and an inclined plane transmission structure. Both clamping blocks 130 are movably mounted on the driving member 110, and the moving block 120 is connected to the output part 111 of the driving member 110 through a floating connection structure.

[0031] Specifically, refer to Figures 1 to 5 The drive component 110 is the power output base of this mechanism. In this invention, the drive component 110 specifically adopts a hydraulic cylinder as the power source, which has the advantages of large output thrust, stable operation and good self-locking, and is suitable for high-precision clamping of die-cast workpieces.

[0032] The shape of the hydraulic cylinder can be the same as that of a traditional hydraulic cylinder, or it can be referenced. Figure 2In this design, to accommodate the irregularly shaped structure of the fixture, the hydraulic cylinder is equipped with a retractable output section 111 for outputting linear driving force, providing stable power support for the axial movement of the moving block 120. In other embodiments in the art, the driving component 110 is not limited to a hydraulic cylinder, but can also be a combination of a pneumatic cylinder, an electric actuator, a servo motor and a lead screw, or a cam mechanism.

[0033] The movable block 120 is assembled and connected to the output part 111 of the drive member 110 through a floating connection structure. The floating connection structure can stably transmit the linear motion of the output part 111 in the driving direction of the drive member 110, while providing the movable block 120 with a lateral pivoting degree of freedom, allowing the movable block 120 to swing slightly relative to the output part 111 about an axis that runs through the driving direction.

[0034] In this embodiment, the floating connection structure includes a pin 112 fixedly mounted on the output section 111 and an oblong hole 121 formed on the movable block 120. The pin 112 is movably inserted into the oblong hole 121 to achieve floating assembly. The ratio of the length L of the oblong hole 121 to the diameter D of the pin 112 is precisely configured to strictly limit the swing angle of the movable block 120 within a preset range α.

[0035] In this specific embodiment, the preferred diameter D of the pin 112 is 4mm, the effective mating length L of the oblong hole 121 is 6mm, and the ratio of L to D is 1.5. This corresponds to the maximum swing angle α of the moving block 120 being controlled within 3°. This parameter configuration ensures that the moving block 120 has sufficient adaptive swing adjustment margin to accommodate positional deviations of the workpiece 200's clamping points, while avoiding problems such as clamping failure and unstable mechanism operation due to excessive swing angles, thus guaranteeing the accuracy and stability of adaptive adjustment.

[0036] Furthermore, the mechanism also includes a fixing block 140 fixedly mounted on the drive member 110. The fixing block 140 has an inner cavity 141 that extends through the moving block 120 in the moving direction. The moving block 120 is slidably mounted inside the inner cavity 141, and a small fitting gap is reserved between the outer wall of the moving block 120 and the inner wall of the inner cavity 141 of the fixing block 140.

[0037] This clearance provides clearance for the angular deflection of the moving block 120 when it swings around the axis of the pin 112, ensuring the smooth completion of the adaptive swing action. At the same time, the inner wall of the cavity 141 of the fixed block 140 can form a lateral limit on the moving block 120, preventing the moving block 120 from displacing along a plane perpendicular to the driving direction, thus ensuring the structural stability of the overall operation of the mechanism.

[0038] A locking block 150 is fixedly mounted on one end of the fixing block 140 away from the driving component 110. The fixed assembly is not limited to the bolt connection shown in the figure, but can also be achieved by welding, riveting, or integral molding, depending on the production process and cost requirements. The fixing block 140 and the locking block 150 cooperate to form a transversely through guide groove. Both clamping blocks 130 are slidably mounted inside the guide groove. The guide groove can accurately guide the transverse movement of the two clamping blocks 130, restricting the clamping blocks 130 from deviating or wobbling, and ensuring that the two clamping blocks 130 can only move in opposite or opposite straight lines in a direction perpendicular to the driving component 110, greatly improving the accuracy of the clamping action.

[0039] In this embodiment, the inclined plane transmission structure is composed of the grooved inclined plane at the end of the moving block 120 and the mating inclined plane of the clamping block 130.

[0040] Specifically, the moving block 120 has a concave groove at one end facing the clamping block 130, and two first inclined surfaces 122 are symmetrically arranged inside the groove. The two first inclined surfaces 122 are arranged symmetrically and inclinedly. The outer walls of the two opposing clamping blocks 130 are each machined with a second inclined surface 131. The two second inclined surfaces 131 correspond one-to-one with the two first inclined surfaces 122 and fit against each other to form a stable inclined surface transmission structure.

[0041] The moving directions of the two clamping blocks 130 are perpendicular to and coplanar with the linear driving direction of the moving block 120, ensuring the smoothness of power transmission.

[0042] When the drive unit 110 drives the output unit 111 to move forward, causing the moving block 120 to move towards the clamping block 130 in the driving direction, the first inclined surface 122 of the moving block 120 continuously presses the second inclined surface 131 of the clamping block 130. Through the force transmission action of the inclined surface, the two clamping blocks 130 are driven to move closer to each other synchronously along the guide groove, thereby achieving the clamping and fixing of the thin-walled clamping part of the workpiece 200 between the two clamping blocks 130.

[0043] To achieve automatic reset of the clamping blocks 130, an elastic element is assembled between the two clamping blocks 130. In this embodiment, the elastic element is specifically a cylindrical compression spring, which has a stable structure, uniform elastic force, and strong fatigue resistance, making it suitable for high-frequency clamping and reset operations. The elastic element is not limited to cylindrical compression springs; depending on the installation space and elastic force requirements, disc springs, leaf springs, or rubber elastomers such as polyurethane can also be used.

[0044] Positioning blind holes 132 are respectively provided on the opposite end faces of the two clamping blocks 130. The two ends of the compression spring are respectively embedded in the two positioning blind holes 132. The positioning blind holes 132 are used to achieve precise positioning and installation of the elastic element, so as to avoid the elastic element from shifting, falling off and radially moving.

[0045] The compression spring is always in a pre-compressed state, and can continuously apply an elastic pushing force to the two clamping blocks 130 to keep them moving away from each other. When the driving member 110 drives the moving block 120 to move backward in the opposite direction and release the inclined plane squeezing effect, the elastic force of the compression spring can quickly push the two clamping blocks 130 away from each other, automatically release the workpiece 200, and complete the unloading and reset action.

[0046] In actual clamping operations, for die-cast workpieces 200 with thin-walled deformation and inconsistent spatial positions of clamping points on both sides, the moving block 120 can adaptively swing slightly according to the reverse force after the two clamping blocks 130 come into contact with the workpiece 200, dynamically adjusting the degree of compression and contact of the first inclined surfaces 122 on both sides of the moving block 120. This allows for real-time fine-tuning of the pressure distribution on the contact surfaces of the moving block 120 and the two clamping blocks 130, automatically balancing the clamping thrust of the two clamping blocks 130. This completely solves the problem of heavy or light force on one side in traditional rigid clamping mechanisms, achieving uniform and stable clamping and fixing of the workpiece 200 on both sides, and effectively avoiding secondary deformation and processing offset of the workpiece 200.

[0047] This embodiment also discloses a fixture, which integrates the floating clamping mechanism 100 described in this embodiment. It can be adapted to the inner clamping conditions of various thin-walled and easily deformable die-cast workpieces 200. It has high clamping accuracy and strong self-adaptability, and can significantly improve the processing qualification rate and production stability of workpieces 200. Example 2

[0048] This embodiment is an external support structure for a floating clamping mechanism 100, used to clamp the inner hole clamping part of the workpiece 200 located outside the two clamping blocks 130. It is suitable for clamping conditions where the inner hole of the die-cast workpiece 200 has dimensional deviation, coaxiality deviation, and thin-wall deformation after forming. The overall basic structure, floating connection structure, and guide structure of the fixed block 140 in this embodiment are consistent with those in Embodiment 1. The difference lies in the assembly method of the inclined plane transmission structure and the elastic element, as shown in the figure below.

[0049] In this embodiment, the floating clamping mechanism 100 also includes a driving component 110, a moving block 120, two opposing clamping blocks 130, and an inclined plane transmission structure. The moving block 120 is connected to the output part 111 of the driving component 110 through a floating connection structure that engages with the oblong hole 121 via a pin 112, possessing adaptive pivoting and swinging capabilities. The moving block 120 is assembled in the inner cavity 141 of the fixed block 140. The two clamping blocks 130 are slidably assembled inside the guide groove formed by the fixed block 140 and the locking block 150. The moving direction of the moving block 120 is perpendicular and coplanar to the moving direction of the clamping blocks 130. The basic limiting and guiding structures are consistent with those in Embodiment 1, and will not be repeated here. The floating connection structure also adopts the parameter configuration of D=4mm, L=6mm, and maximum swing angle α=3° to ensure uniform and stable adaptive adjustment performance of the mechanism.

[0050] The inclined plane transmission structure of this embodiment adopts a convex inclined plane mating structure. Specifically, the moving block 120 has an integrally formed convex ...

[0051] The elastic element is assembled between the clamping block 130 and the driving element 110. In this embodiment, the elastic element is specifically a cylindrical compression spring, which is adapted to the reset requirements of the outer-spreading clamping structure. The elastic force output is stable and the service life is long.

[0052] Specifically, cylindrical compression springs are fitted between the outer ends of the two clamping blocks 130 and the fixing block 140, or between the outer ends of the fixing block 140 and the extension of the fixing block 140. One end of the cylindrical compression spring is fixedly abutted against the end of the clamping block 130, and the other end is fixedly abutted against the side wall of the driving member 110. In this embodiment, the elastic element is specifically a cylindrical compression spring, which is suitable for the reset requirements of the outer-spreading clamping structure, and has stable elastic force output and long service life. Of course, the elastic element is not limited to a cylindrical compression spring. Depending on the installation space and elastic force requirements, disc springs, leaf springs, or rubber elastomers such as polyurethane can also be used.

[0053] This embodiment is used for external clamping of workpiece 200 holes, etc. During operation, the drive unit 110 drives the output unit 111 to move forward, which drives the moving block 120 to move towards the clamping block 130. The first inclined surface on both sides of the protrusion continuously presses the second inclined surface on the inner side of the two clamping blocks 130, overcoming the elastic force of the elastic element, and drives the two clamping blocks 130 to move away from each other and outward along the guide groove, so that the outer ends of the two clamping blocks 130 abut against the inner wall of the workpiece 200 hole, thereby achieving the clamping and fixing of the outer clamping part of the workpiece 200.

[0054] During the die-casting process and cooling shrinkage, the internal hole structure of the die-cast workpiece 200 is easily affected by factors such as uneven flow of molten metal, temperature difference during cooling, and slight deformation of the mold, resulting in forming defects such as deviation of the inner hole diameter, uneven circumferential wall thickness, and misalignment of the inner hole coaxiality. This leads to inconsistent clamping datum for the inner holes of batch workpieces 200 and deviations in the spatial position of the support points on both sides of the inner hole of a single workpiece 200.

[0055] The reverse support force of the inner hole of workpiece 200 on the two clamping blocks 130 may be uneven. This reverse force can drive the moving block 120 to self-adaptively pivot and swing slightly through the floating connection structure, dynamically adjusting the extrusion stroke and extrusion force of the first inclined surface 122 on both sides of the protrusion, and adjusting the external support thrust of the two clamping blocks 130 in real time, so that the two clamping blocks 130 are completely in contact with the deformed inner hole wall of workpiece 200 and are evenly stressed, eliminating the problems of overload on one side and excessive gap on one side, ensuring the stability of the positioning reference of the inner hole of workpiece 200, and effectively avoiding the problems of workpiece 200 displacement, excessive deviation of hole coaxiality, and secondary extrusion deformation of hole wall during processing.

[0056] After processing is completed, the drive component 110 drives the moving block 120 to reverse and reset. The first inclined surface of the protrusion of the moving block 120 and the second inclined surface of the clamping block 130 gradually release the squeezing fit. At this time, the elastic element between the clamping block 130 and the fixed block 140 releases the elastic force, pushing the two clamping blocks 130 to quickly approach each other and retract and reset, releasing the tight fixation on the hole of the workpiece 200, so that the workpiece 200 can be quickly unloaded and removed.

[0057] This embodiment also discloses a fixture equipped with the external support floating clamping mechanism 100 of this embodiment, which can be adapted to the inner wall support and positioning conditions of various cylindrical and hole-type die-cast workpieces 200. It can adapt to the positional deviation caused by the thin wall deformation of the hole wall of the workpiece 200, and the clamping force is uniform and the positioning stability is good, which can effectively improve the finishing accuracy and product consistency of the hole-type workpieces 200.

[0058] It should be noted that in this invention, 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 that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. 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 specified. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0059] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If 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 the present invention.

[0060] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention 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 the invention or exceeding the scope defined by the appended claims.

Claims

1. A floating clamping mechanism, characterized in that, include: A driving component, which has an output section; A movable block is connected to the output of the drive unit via a floating connection structure; the floating connection structure transmits motion from the output unit in the driving direction of the drive unit and provides a pivoting degree of freedom to allow the movable block to swing relative to the output unit about an axis traversing the driving direction. Two opposing clamping blocks, both of which are movably mounted on the drive member; and An inclined plane transmission structure, formed between the moving block and the two clamping blocks, is used to drive the two clamping blocks to move closer or further apart when the moving block moves along the driving direction; wherein... The moving block can swing due to the reaction force generated by its interaction with the clamping blocks, causing the pressure distribution at the contact surface between the moving block and the two clamping blocks to change dynamically, so as to adaptively adjust the thrust applied to the two clamping blocks.

2. The floating clamping mechanism as described in claim 1, characterized in that, The floating connection structure includes a pin disposed on the output section and an oblong hole disposed on the movable block, wherein the pin is inserted into the oblong hole; wherein the ratio of the length L of the oblong hole to the diameter D of the pin is configured to limit the swing angle of the movable block within a preset range α.

3. The floating clamping mechanism as described in claim 1, characterized in that, The moving block has a groove at one end facing the clamping block. The groove has two first inclined surfaces. The two clamping blocks have second inclined surfaces on their opposite sidewalls. The first inclined surfaces and the second inclined surfaces correspond to each other and move against each other to form the inclined surface transmission structure.

4. The floating clamping mechanism as described in claim 3, characterized in that, An elastic element is disposed between the two clamping blocks, and each of the two clamping blocks has positioning blind holes for accommodating the two ends of the elastic element; wherein, The elastic element always applies an elastic force to the two clamping blocks to push them away from each other, so as to push the two clamping blocks away from each other when the driving element drives the moving block to move in the opposite direction.

5. The floating clamping mechanism as described in claim 1, characterized in that, The moving block has a protrusion on one side facing the clamping block. The protrusion has two first inclined surfaces. The two clamping blocks have second inclined surfaces on their sidewalls that are close to each other. The first inclined surfaces and the second inclined surfaces correspond to each other and move against each other to form the inclined surface transmission structure.

6. The floating clamping mechanism as described in claim 5, characterized in that, An elastic element is provided between the ends of the two clamping blocks that are far apart from each other and the driving member. The elastic element always applies an elastic force to the two clamping blocks to make them move closer to each other, so as to push the two clamping blocks closer to each other when the driving member drives the moving block to move in the opposite direction.

7. The floating clamping mechanism as described in claim 2, characterized in that, It also includes a fixing block fixedly disposed on the driving member, the fixing block having an axially penetrating inner cavity; The movable block is disposed in the inner cavity, and a fitting gap is formed between its outer wall and the inner wall of the inner cavity; in, The clearance is used to allow the moving block to deflect at an angle in the inner cavity when it swings about the axis of the pin, while the inner wall of the inner cavity blocks its planar displacement perpendicular to the driving direction.

8. The floating clamping mechanism as described in claim 7, characterized in that, A locking block is provided at the end of the fixed block opposite to the driving member. A guide groove is formed between the fixed block and the locking block. Both clamping blocks are disposed in the guide groove to provide guidance for the movement of the clamping blocks.

9. The floating clamping mechanism as described in claim 1, characterized in that, The moving direction of the moving block is coplanar with the moving directions of the two clamping blocks and perpendicular to each other.

10. A clamp, characterized in that, Includes the floating clamping mechanism as described in any one of claims 1 to 9.

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