Quick-release clamp structure of five-axis linkage processing machine tool

Abstract

The invention relates to the related technical field of machine tool machining centers, in particular to a quick-release clamp structure of a five-axis linkage machining tool, which comprises a quick-release clamp body, an adjusting mechanism and a locking assembly. The quick-release clamp body is provided with a sliding seat, a fixed clamping seat and a movable clamping seat, the sliding seat can horizontally move on the mounting base plate and is locked through a locking assembly, and quick switching of workpiece hole sites is achieved; the adjusting assembly drives the movable clamping seat to move to adapt to workpieces of different sizes; the clamping surfaces of the fixed clamping seat and the movable clamping seat are micro conical surfaces and are provided with elastic buffer pads, so that automatic centering and surface protection are realized; the adjusting mechanism comprises a radial rotating mechanism and an axial rotating mechanism, and multi-angle adjustment of the workpiece is achieved. Through the design of rapid station switching of the sliding seat, automatic centering of a micro conical surface, multi-dimensional angle adjustment and the like, the problems that a traditional clamp is time-consuming in clamping, low in positioning precision and inconvenient in angle adjustment are effectively solved, and the machining efficiency and precision of a five-axis linkage machining machine tool are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of CNC machining equipment technology, and in particular to a quick-release fixture structure for a five-axis linkage machining center. Background Technology

[0002] When machining complex workpieces with multiple holes on a five-axis machining center, traditional clamping methods typically use a single fixture to fix the workpiece. When machining holes in different positions, the workpiece clamping position needs to be repeatedly adjusted or the tool needs to be re-set, which presents the following problems: 1) Multiple clampings lead to inconsistent positioning references, affecting the relative position accuracy of the holes; 2) Clamping and adjustment are time-consuming, reducing machining efficiency; 3) A single fixture is difficult to adapt to the clamping requirements of workpieces of different specifications; 4) The workpiece angle cannot be quickly adjusted during machining, which requires reliance on the machine tool's five-axis linkage system, increasing the burden on the machine tool spindle and the complexity of programming. Summary of the Invention

[0003] This invention solves the problems in related technologies and proposes a quick-release fixture structure for a five-axis linkage machining center. The clamping component facilitates the fixing of the end of the forming tube or bar, the drive component drives the forming wheel to rotate, and the feeding unit feeds the forming tube or bar body, effectively ensuring the efficiency of bending the tube or bar body. In addition, the feeding unit achieves the purpose of automatically feeding the bending tube or bar body through a compact mechanical structure, avoiding the use of electrical equipment and saving resources.

[0004] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: a quick-release clamping structure for a five-axis linkage machining tool, comprising a frame, a machining head disposed on the upper end face of the frame, a first feed mechanism for feeding the machining head, a quick-release clamping body disposed relative to the machining head, a mounting plate fixedly connected to the quick-release clamping body, a base connected to the mounting plate, a second feed mechanism for feeding the quick-release clamping body, and an adjustment mechanism for adjusting the angle of the quick-release clamping body; The quick-release clip is rotatably connected to the base via an adjustment mechanism; The quick-release clamp is specifically used to clamp and fix the workpiece body, which has two holes to be processed. The quick-release clip specifically includes a mounting base fixedly connected to the mounting plate, a sliding seat slidably disposed on the upper surface of the mounting base, a locking component for locking the sliding seat, a fixed bracket fixedly disposed at one end of the upper surface of the sliding seat, a movable bracket slidably disposed on the upper surface of the sliding seat, and an adjustment component for adjusting the movable bracket. The locking component includes a guide component for guiding the sliding seat during movement and a limiting component for limiting the sliding seat after movement. The guide assembly includes a fixed guide seat fixedly disposed on the mounting base and slidably connected to the sliding seat, a movable guide seat disposed on the other side of the sliding seat, a limiting seat fixedly disposed on the mounting base and slidably connected to the movable guide seat, and a locking member for locking the movable guide seat.

[0005] By adopting the above technical solution, in this invention, the fixed and movable card holders facilitate the fixation of the workpiece body, and the locking component facilitates the locking and releasing of the movable guide seat, thereby facilitating the horizontal movement of the sliding seat. This ensures that the holes to be processed, hole one and hole two, always correspond to the central axis of the mounting base, thus guaranteeing that the machining head does not need to frequently adjust the overall position of the workpiece body when machining different holes, effectively reducing clamping and positioning time and improving machining efficiency. The limiting component can limit the sliding seat after it moves to the target position, further enhancing the stability of the sliding seat, preventing displacement of the sliding seat due to vibration during machining, and ensuring machining accuracy.

[0006] As a preferred embodiment, the adjustment assembly includes a screw rod rotatably mounted on a sliding seat, a limiting retaining ring fixedly mounted on the outer periphery of the screw rod, and a limiting slot mounted on the movable card seat that is adapted to the limiting retaining ring. The limiting retaining ring is circumferentially mounted on the outer surface of the screw rod, and the outer diameter of the limiting retaining ring is larger than the outer diameter of the screw rod.

[0007] By adopting the above technical solution, when the second screw rotates, the limiting retaining ring engages in the limiting groove, thereby driving the movable clamp to move along the length direction of the sliding seat, realizing the adjustment of the distance between the fixed clamp and the movable clamp to meet the clamping requirements of the workpiece body. Preferably, one end of the second screw is also provided with an adjusting handwheel that is easy to rotate manually, which is convenient to operate and can realize fine adjustment of the position of the movable clamp, ensuring that the workpiece body is firmly clamped.

[0008] As a preferred embodiment, the clamping surfaces of the fixed card holder and the movable card holder are respectively set as micro-conical surfaces, and elastic buffer pads are provided on the clamping surfaces, the buffer pads being made of rubber.

[0009] By adopting the above technical solution, sufficient friction can be provided to prevent the workpiece from sliding during processing, and the workpiece surface can be protected during clamping to avoid scratches or indentations caused by rigid contact. Simultaneously, the micro-conical surface design allows the fixed and movable clamping seats to automatically center the workpiece through the guiding action of the conical surface, further improving the coaxiality of the clamping. This ensures that when the machining head is processing hole one and hole two, the central axis of the tool remains consistent with the designed axis of the hole, effectively improving the positional accuracy and cylindricity of the hole processing.

[0010] As a preferred embodiment, it also includes a guide block fixedly disposed on the upper end face of the sliding seat, and the length direction of the guide block is parallel to the axial direction of the screw.

[0011] By adopting the above technical solution, when the movable chuck moves along the sliding seat under the drive of the adjustment component, the guide block can limit the two sides of the movable chuck to prevent it from shifting laterally or shaking during the movement, ensuring that the movable chuck always moves smoothly along the preset trajectory, and further ensuring the clamping accuracy of the fixed chuck and the movable chuck on the workpiece body.

[0012] As a preferred embodiment, the locking member includes a screw rod that passes through the movable guide seat and connects to the mounting base plate, a guide protrusion fixedly disposed at one end of the movable guide seat relative to the limiting seat, and a guide groove disposed on the inner side of the limiting seat and adapted to the guide protrusion. The screw rod is connected to the mounting base plate through a threaded structure.

[0013] By adopting the above technical solution, when it is necessary to adjust the position of the sliding seat, loosen screw one, thereby unlocking the locking force of the moving guide seat on the sliding seat, allowing the moving guide seat to slide along the limiting seat under the cooperation of the guide protrusion and the guide groove, thus facilitating the movement of the sliding seat by pushing it. When the sliding seat moves to the target position, tighten screw one, and use the locking force of the thread to fix the moving guide seat on the limiting seat, thereby achieving reliable locking of the sliding seat.

[0014] As a preferred embodiment, the limiting component includes a first limiting pin disposed at one end of the upper surface of the mounting substrate and a second limiting pin disposed at the other end of the mounting substrate, wherein the first limiting pin and the second limiting pin are respectively configured as optical axis rods.

[0015] By adopting the above technical solution, when the sliding seat moves to abut against the first or second limiting pin, the movement stroke of the sliding seat can be mechanically limited, preventing the sliding seat from detaching from the mounting base or colliding with other components due to excessive movement. Specifically, when the sliding seat moves towards the first limiting pin, one end of the sliding seat will contact the outer peripheral surface of the first limiting pin, at which point the first limiting pin acts as a block, restricting the sliding seat from moving further in that direction. Similarly, when the sliding seat moves towards the second limiting pin, the other end of the sliding seat will abut against the second limiting pin, thereby limiting the reverse movement of the sliding seat. The design of the optical axis rod ensures surface contact between the limiting pin and the sliding seat, with a large contact area, which can disperse contact stress and prevent the sliding seat from deforming or being damaged due to excessive local stress during limiting.

[0016] As a preferred embodiment, the first limiting pin and the second limiting pin are respectively connected to the mounting base plate by fixing nuts, and the mounting base plate is provided with a square-round hole through which the first limiting pin and the second limiting pin pass, and the diameter of the square-round hole is slightly larger than the outer diameter of the first limiting pin and the second limiting pin.

[0017] By adopting the above technical solution, when the limit position needs to be adjusted, the fixing nut can be loosened, and the first or second limit pin can be moved to the target position along the length of the square or round hole before tightening the fixing nut. This allows for flexible adjustment of the limit stroke to adapt to the processing requirements of hole spacing on workpieces of different specifications. This adjustable limit design further enhances the versatility and adaptability of the quick-release clamp, meeting the processing and clamping requirements of various workpieces.

[0018] As a preferred embodiment, the adjustment mechanism includes a radial rotation mechanism and an axial rotation mechanism; The radial rotation mechanism includes a first drive motor fixedly connected to the base, a first transmission pulley connected to the output shaft a of the first drive motor, a transmission belt connected to the first transmission pulley, and a second transmission pulley connected to the other end of the first transmission belt. The second transmission pulley is connected to the mounting plate via a rotating pin. Both ends of the mounting plate are connected to the base via rotating pins, and a sealed bearing is provided at the connection between the rotating pin and the base.

[0019] By adopting the above technical solution, the smooth rotation of the rotating pin shaft in the base is guaranteed. When the first drive motor starts, the output shaft a drives the first transmission pulley to rotate. The power is transmitted to the second transmission pulley through the transmission belt, which in turn drives the rotating pin shaft and the mounting plate fixedly connected to it to rotate radially around the axis of the rotating pin shaft. This realizes the angle adjustment of the quick-release clamp in the horizontal plane, so that the hole to be processed on the workpiece body can be adjusted to the angle position corresponding to the processing head according to the processing requirements.

[0020] As a preferred embodiment, the axial rotation mechanism includes a mounting plate fixedly connected to the rotating pin on one side, a second drive motor fixedly mounted on the mounting plate, a first transmission pulley connected to the output shaft b of the second drive motor, a transmission belt connected to the first transmission pulley, and a second transmission pulley connected to the transmission belt. The second transmission pulley passes through the base and is connected to the second transmission pulley. The second transmission pulley is also connected to a flange on the mounting plate via a rotating shaft. The flange is rotatably and fixedly connected to the mounting plate, and the flange is fixedly connected to the mounting base plate.

[0021] By adopting the above technical solution, when the second drive motor starts, the output shaft b drives the first transmission pulley two to rotate, and the power is transmitted to the second transmission pulley two through the transmission belt two, which in turn drives the rotating shaft and the flange fixedly connected to it to rotate. Since the flange is fixedly connected to the mounting base plate, it can drive the quick-release clamp to rotate axially around the axis of the rotating shaft, realizing the angle adjustment of the workpiece body in the vertical plane. Through the coordinated cooperation of the radial rotation mechanism and the axial rotation mechanism, the quick-release clamp can drive the workpiece body to achieve multi-dimensional angle adjustment, meeting the needs of machining different angle surfaces of the workpiece in five-axis linkage machining, and completing the machining of complex holes without multiple clamping, further improving machining efficiency and machining accuracy.

[0022] As a preferred embodiment, the base is provided with a track groove adapted to the two phases of the transmission belt. The track groove is configured as an arc-shaped structure, and its center coincides with the axis of the rotating pin.

[0023] By adopting the above technical solution, when the axial rotation mechanism drives the quick-release clamp to rotate, the second transmission belt can move synchronously along the arc-shaped path of the track groove, avoiding interference between the second transmission belt and the base or generating additional tension during movement, thus ensuring the smoothness and reliability of power transmission. The inner wall of the track groove is also provided with a wear-resistant coating made of polytetrafluoroethylene (PTFE), which has an extremely low coefficient of friction and good wear resistance, effectively reducing frictional loss between the second transmission belt and the track groove, and extending the service life of the transmission components. Simultaneously, the depth and width of the track groove are adapted to the second transmission belt, ensuring that the second transmission belt will not fall off within the groove while still moving flexibly, further improving the operational stability of the axial rotation mechanism.

[0024] Compared with the prior art, the beneficial effects of the present invention are: the present invention; 1. The sliding seat drives the fixed and movable chucks to move horizontally on the mounting base, allowing hole positions one and two on the workpiece to be sequentially aligned with the center of the machining head and the axis of the mounting base. When it is necessary to switch machining positions, simply unlock the locking mechanism, push the sliding seat to the target position, and then lock it again to complete the position switch. There is no need to re-clamp the workpiece or adjust the overall position of the workpiece, which significantly shortens auxiliary time and improves machining efficiency.

[0025] 2. The locking mechanism adopts a dual locking structure of "screw locking + guide engagement". When the screw is tightened, the moving guide seat is fixed on the limit seat by the threaded locking force; the precise fit between the guide protrusion and the guide groove prevents the moving guide seat from deflecting during the locking process, ensuring the positioning accuracy of the sliding seat. The first limit pin and the second limit pin provide mechanical limits to prevent excessive movement of the sliding seat, further ensuring the accuracy and safety of positioning.

[0026] 3. The clamping surfaces of the fixed and movable clamping seats adopt a micro-conical surface design, which automatically centers the workpiece during clamping by guiding the conical surface, improving clamping coaxiality. The elastic buffer pad provides sufficient friction to prevent workpiece slippage and protects the workpiece surface during clamping, avoiding scratches or indentations, making it particularly suitable for precision workpieces with high surface quality requirements.

[0027] 4. The adjustment mechanism includes a radial rotation mechanism and an axial rotation mechanism, each driven by an independent servo motor, enabling multi-dimensional angle adjustment of the quick-release clamp in both horizontal and vertical planes. Combined with the movement of the five-axis CNC machining center, it can cover the machining surface of the workpiece at any angle, completing complex hole machining without multiple clamping operations, further expanding machining capabilities.

[0028] 5. The movable clamping seat is driven by screw two and limit retaining ring, allowing for quick adjustment of the clamping distance according to different workpiece sizes. The first and second limit pins can be adjusted in position via square and round holes to accommodate workpieces with different hole spacings, enhancing the versatility and adaptability of the fixture and reducing tooling costs. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of a quick-release fixture structure for a five-axis linkage machining center according to the present invention; Figure 2 This is a schematic diagram of the rotating component for rotating the quick-release clamping body in the quick-release clamping structure of a five-axis linkage machining tool according to the present invention. Figure 3 This is a schematic diagram of the quick-release fixture in the quick-release fixture structure of a five-axis linkage machining center according to the present invention. Figure 4 This invention relates to a quick-release fixture structure for a five-axis linkage machining center. Figure 3 A top view structural diagram; Figure 5 This is a structural schematic diagram of the movable clamping seat and adjustment component assembly in the quick-release fixture structure of a five-axis linkage machining center according to the present invention; Figure 6 This invention relates to a quick-release fixture structure for a five-axis linkage machining center. Figure 5 A structural schematic diagram of the enlarged view at point A; Figure 7 This is a schematic diagram of the movable chuck in the quick-release fixture structure of a five-axis linkage machining tool of the present invention when it is moving; Figure 8 This is a structural schematic diagram of the assembly of the movable guide seat and the limiting seat in the quick-release fixture structure of a five-axis linkage machining tool according to the present invention.

[0030] In the picture: Frame; 200, Machining cutter head; 201, Feed mechanism one; 300, Quick-release clamping body; 301, Base; 3011, Mounting plate; 302, Feed mechanism two; 41, First drive motor; 411, First transmission pulley one; 412, Second transmission pulley one; 413, Transmission belt one; 42, Second drive motor; 420, Mounting support plate; 421, First transmission pulley two; 422, Second transmission pulley two; 423, Transmission belt two; 4231, Track groove; 11. Workpiece body; 101. Hole position one; 102. Hole position two; 51. Mounting base plate; 52. Sliding seat; 521. First limiting pin; 522. Second limiting pin; 531. Fixed card seat; 532. Moving card seat; 5320. Limiting slot; 5321. Guide block; 541. Fixed guide seat; 542. Moving guide seat; 55. Limiting seat; 56. Screw one; 57. Guide protrusion; 571. Guide groove; 61. Screw two; 611. Limiting retaining ring. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0033] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0034] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0035] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0036] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0037] like Figures 1 to 8As shown, a quick-release clamping structure for a five-axis linkage machining center includes a frame 100, a machining head 200 disposed on the upper end face of the frame 100, a feed mechanism 201 for feeding the machining head 200, a quick-release clamping body 300 disposed relative to the machining head 200, a mounting plate 3011 fixedly connected to the quick-release clamping body 300, a base 301 connected to the mounting plate 3011, a feed mechanism 302 for feeding the quick-release clamping body 300, and an adjustment mechanism for adjusting the angle of the quick-release clamping body. Please refer to details. Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 The quick-release clamp 300 is rotatably connected to the base 301 via an adjustment mechanism; The quick-release clamp 300 is used to clamp and fix the workpiece body 11, which has a hole position 101 and a hole position 102 to be processed. Please refer to the details. Figure 3 and Figure 4 The quick-release clamp 300 includes a mounting base 51 fixedly connected to the mounting plate 3011, a sliding seat 52 slidably disposed on the upper end surface of the mounting base 51, a locking component for locking the sliding seat 52, a fixed card seat 531 fixedly disposed on one end of the upper end surface of the sliding seat 52, a movable card seat 532 slidably disposed on the upper end surface of the sliding seat 52, and an adjustment component for adjusting the movable card seat 532. The feed mechanism 201 and feed mechanism 302 in this embodiment can be referenced in CN201310616924.X five-axis machining center.

[0038] Please refer to the details. Figure 3 , Figure 7 and Figure 8 The locking component includes a guide component for guiding the slide block 52 during movement and a limiting component for limiting the slide block 52 after movement. Please refer to the details. Figure 3 , Figure 7 and Figure 8The guiding assembly includes a fixed guide seat 541 fixedly mounted on the mounting base 51 and slidably connected to the sliding seat 52, a movable guide seat 542 disposed on the other side of the sliding seat 52, a limiting seat 55 fixedly mounted on the mounting base 51 and slidably connected to the movable guide seat 542, and a locking member for locking the movable guide seat 542. In this invention, the fixed seat 531 and the movable seat 532 facilitate the fixing of the workpiece body 11, and the locking member facilitates locking and releasing the movable guide seat 542, thereby facilitating the horizontal movement of the sliding seat 52. This ensures that the hole positions 101 and 102 to be processed always correspond to the central axis of the mounting base 51, thereby ensuring that the processing head 200 does not need to frequently adjust the overall position of the workpiece body 11 when processing different hole positions, effectively reducing the clamping and positioning time and improving processing efficiency. The limiting component can limit the sliding seat 52 after it moves to the target position, further enhancing the stability of the sliding seat 52, preventing the sliding seat 52 from shifting due to vibration during processing, and ensuring processing accuracy.

[0039] Please refer to the details. Figure 5 and Figure 6 The adjustment assembly includes a second screw 61 rotatably mounted on the sliding seat 52, a limiting retaining ring 611 fixedly mounted on the outer periphery of the second screw 61, and a limiting groove 5320 mounted on the movable retaining seat 532 that matches the limiting retaining ring 611. The limiting retaining ring 611 is circumferentially positioned on the outer surface of the second screw 61, and its outer diameter is larger than that of the second screw 61. When the second screw 61 rotates, the limiting retaining ring 611 engages in the limiting groove 5320, thereby driving the movable retaining seat 532 to move along the length of the sliding seat 52, thus adjusting the distance between the fixed retaining seat 531 and the movable retaining seat 532 to meet the clamping requirements of the workpiece body 11. Preferably, one end of the second screw 61 is also provided with an adjustment handwheel for easy manual rotation, which is convenient to operate and allows for fine adjustment of the position of the movable retaining seat 532, ensuring that the workpiece body 11 is firmly clamped.

[0040] Please refer to the details. Figure 4To ensure the stability of the fixed clamping seat 531 and the movable clamping seat 532 in clamping the workpiece body 11, the clamping surfaces of the fixed clamping seat 531 and the movable clamping seat 532 are respectively set as micro-conical surfaces, and elastic buffer pads are provided on the clamping surfaces. The buffer pads are made of rubber material, which can provide sufficient friction to prevent the workpiece body 11 from sliding during processing, and can also protect the workpiece surface during clamping, avoiding scratches or indentations on the workpiece surface due to rigid contact. At the same time, the micro-conical surface design allows the fixed clamping seat 531 and the movable clamping seat 532 to automatically center the workpiece when clamping the workpiece body 11 through the guiding effect of the conical surface, further improving the coaxiality of clamping. This ensures that when the machining head 200 is machining hole position one 101 and hole position two 102, the central axis of the tool is consistent with the design axis of the hole position, effectively improving the positional accuracy and cylindricity of hole machining.

[0041] Please refer to the details. Figure 3 To guide the movable clamp 532 during movement, a guide block 5321 is fixedly mounted on the upper surface of the sliding seat 52. The length direction of the guide block 5321 is parallel to the axis of the screw 61. When the movable clamp 532 moves along the sliding seat 52 under the drive of the adjusting component, the guide block 5321 can limit the two sides of the movable clamp 532 to prevent lateral deviation or shaking during movement, ensuring that the movable clamp 532 always moves smoothly along the preset trajectory, further ensuring the clamping accuracy of the fixed clamp 531 and the movable clamp 532 on the workpiece body 11. In addition, the guide block 5321 and the movable clamp 532 adopt a clearance fit, with the clearance controlled within the range of 0.02-0.05mm. This not only meets the smooth sliding requirements of the movable clamp 532 but also provides sufficient guiding accuracy, avoiding radial oscillation of the movable clamp 532 due to excessive clearance.

[0042] Please refer to the details. Figure 7 and Figure 8The locking component includes a screw 56 that passes through the movable guide seat 542 and connects it to the mounting base 51, a guide protrusion 57 fixedly disposed at one end of the movable guide seat 542 relative to the limiting seat 55, and a guide groove 571 disposed inside the limiting seat 55 and adapted to the guide protrusion 57. The screw 56 is connected to the mounting base 51 through a threaded structure. When it is necessary to adjust the position of the sliding seat 52, the screw 56 is loosened, thereby unlocking the locking force of the movable guide seat 542 on the sliding seat 52. The movable guide seat 542 can slide along the limiting seat 55 under the cooperation of the guide protrusion 57 and the guide groove 571, which facilitates the movement of the sliding seat 52 by pushing it. When the sliding seat 52 moves to the target position, the screw 56 is tightened, and the locking force of the thread is used to fix the movable guide seat 542 on the limiting seat 55, thereby achieving reliable locking of the sliding seat 52. This locking method is simple to operate, securely locks, and the cooperation between the guide protrusion 57 and the guide groove 571 can effectively prevent the moving guide seat 542 from deviating during the locking process, ensuring the positioning accuracy of the sliding seat 52.

[0043] Please refer to the details. Figure 3 and Figure 4 The limiting component includes a first limiting pin 521 disposed at one end of the upper surface of the mounting base 51 and a second limiting pin 522 disposed at the other end of the mounting base 51. The first limiting pin 521 and the second limiting pin 522 are respectively configured as optical shafts. Thus, when the sliding seat 52 moves to abut against the first limiting pin 521 or the second limiting pin 522, the movement stroke of the sliding seat 52 can be mechanically limited to prevent the sliding seat 52 from detaching from the mounting base 51 or colliding with other components due to excessive movement. Specifically, when the sliding seat 52 moves towards the first limiting pin 521, one end of the sliding seat 52 contacts the outer circumferential surface of the first limiting pin 521. At this time, the first limiting pin 521 acts as a block, restricting the sliding seat 52 from moving further in that direction. Similarly, when the sliding seat 52 moves towards the second limiting pin 522, the other end of the sliding seat 52 abuts against the second limiting pin 522, thereby limiting the reverse movement of the sliding seat 52. The design of the optical axis rod ensures that there is a surface contact between the limiting pin and the sliding seat 52, with a large contact area, which can disperse the contact stress and prevent the sliding seat 52 from deforming or being damaged due to excessive local stress during the limiting process.

[0044] Please refer to the details. Figure 3Meanwhile, the positions of the first limiting pin 521 and the second limiting pin 522 can be preset according to the spacing between hole 101 and hole 102 on the workpiece body 11 to be processed. This ensures that when the sliding seat 52 moves between the two limiting pins, the first limiting pin 521 and the second limiting pin 522 are connected to the mounting base plate 51 through fixing nuts. The mounting base plate 51 is provided with a square-round hole through which the first limiting pin 521 and the second limiting pin 522 pass. The diameter of the square-round hole is slightly larger than the outer diameter of the first limiting pin 521 and the second limiting pin 522. This allows the fixing nuts to be loosened when the limiting position needs to be adjusted, and the first limiting pin 521 or the second limiting pin 522 to the target position can be moved along the length direction of the square-round hole before the fixing nuts are tightened. This enables flexible adjustment of the limiting stroke to meet the processing requirements of hole spacing on workpiece bodies 11 of different specifications. This adjustable limit design further enhances the versatility and adaptability of the quick-release clamp 300, enabling it to meet the processing and clamping requirements of various workpieces.

[0045] Please refer to the details. Figure 1 and Figure 2 The adjustment mechanism includes a radial rotation mechanism and an axial rotation mechanism; Please refer to the details. Figure 2 The radial rotation mechanism includes a first drive motor 41 fixedly connected to the base 301, a first transmission pulley 411 connected to the output shaft a of the first drive motor 41, a transmission belt 413 connected to the first transmission pulley, and a second transmission pulley 412 connected to the other end of the first transmission belt 413. The second transmission pulley 412 is connected to the mounting plate 3011 via a rotating pin. Both ends of the mounting plate 3011 are connected to the base 301 via rotating pins, and a seal is provided at the connection between the rotating pin and the base 301. Bearings are provided to ensure the smooth rotation of the rotating pin within the base 301. When the first drive motor 41 starts, the output shaft a drives the first transmission pulley 411 to rotate, and transmits the power to the second transmission pulley 412 through the transmission belt 413. This, in turn, drives the rotating pin and the mounting plate 3011 fixedly connected to it to rotate radially around the axis of the rotating pin, thereby realizing the angle adjustment of the quick-release clamping body 300 in the horizontal plane. This allows the workpiece body 11 to be adjusted to the angle position corresponding to the processing head 200 according to the processing requirements.

[0046] Please refer to the details. Figure 2The axial rotation mechanism includes a mounting plate 420 fixedly connected to a rotating pin on one side, a second drive motor 42 fixedly mounted on the mounting plate 420, a first transmission pulley 421 connected to the output shaft b of the second drive motor 42, a transmission belt 423 connected to the first transmission pulley 421, and a second transmission pulley 422 connected to the transmission belt 423. The second transmission pulley passes through the base 301 and is connected to the second transmission pulley 422. The second transmission pulley 422 is connected to the mounting plate 3011 via a rotating shaft. The flange is connected to the mounting plate 3011, which rotates and is fixedly connected to it. The flange is also fixedly connected to the mounting base plate 51. When the second drive motor 42 starts, the output shaft b drives the first transmission pulley 421 to rotate. Power is transmitted to the second transmission pulley 422 via the transmission belt 423, which in turn drives the rotating shaft and the flange fixedly connected to it to rotate. Because the flange is fixedly connected to the mounting base plate 51, the quick-release clamping device 300 can rotate axially around the axis of the rotating shaft, achieving angle adjustment of the workpiece body 11 in the vertical plane. Through the coordinated operation of the radial and axial rotation mechanisms, the quick-release clamping device 300 can achieve multi-dimensional angle adjustment of the workpiece body 11, meeting the requirements for machining different angle surfaces of the workpiece in five-axis linkage machining. Complex hole machining can be completed without multiple clamping operations, further improving machining efficiency and accuracy.

[0047] Please refer to the details. Figure 2 The base 301 is provided with a track groove 4231 adapted to the transmission belt 423. The track groove 4231 is designed with an arc shape, and its center coincides with the axis of the rotating pin. When the axial rotation mechanism drives the quick-release clamp 300 to rotate, the transmission belt 423 can move synchronously along the arc path of the track groove 4231, avoiding interference between the transmission belt 423 and the base 301 or generating additional tension during the movement, ensuring the smoothness and reliability of power transmission. The inner wall of the track groove 4231 is also provided with a wear-resistant coating. This coating is made of polytetrafluoroethylene (PTFE), which has an extremely low coefficient of friction and good wear resistance, effectively reducing frictional loss between the transmission belt 423 and the track groove 4231, and extending the service life of the transmission components. At the same time, the depth and width of the track groove 4231 are adapted to the transmission belt 423, ensuring that the transmission belt 423 will not fall off in the groove and can move flexibly, further improving the operational stability of the axial rotation mechanism.

[0048] The system also includes a control system electrically connected to the first drive motor 41 and the second drive motor 42. This control system controls the start / stop, speed, and rotation angle of the radial and axial rotation mechanisms. Based on a preset machining program or operator instructions, the control system precisely controls the rotation angle and speed of the quick-release clamp 300, achieving automated machining. The control system also features position feedback. By installing an encoder or angle sensor on the rotating pin or flange, it monitors the actual rotation angle of the quick-release clamp 300 in real time and feeds the signal back to the control system, forming a closed-loop control to ensure the accuracy of angle adjustment. Furthermore, the control system can integrate a fault diagnosis module. When abnormalities occur in the drive motor, transmission belt, or sensor components, it can promptly issue an alarm and stop operation, preventing equipment damage and machining accidents, thus improving the safety and reliability of equipment operation.

[0049] Working principle: Workpiece clamping: Rotate the adjusting handwheel, the screw 61 rotates, the limit retaining ring 611 engages in the limit slot 5320, driving the movable clamping seat 532 to move along the guide block 5321. Adjust the distance between the fixed clamping seat 531 and the movable clamping seat 532 to be slightly larger than the width of the workpiece body 11. Place the workpiece body 11 between the clamping surfaces, rotate the adjusting handwheel in the opposite direction to move the movable clamping seat 532 towards the fixed clamping seat 531. The micro-conical clamping surface, in conjunction with the elastic buffer pad, firmly clamps the workpiece body 11 and automatically centers it.

[0050] Hole Position Switching: Loosen screw 56 to release the locking between the movable guide seat 542 and the limiting seat 55. Push the sliding seat 52 along the fixed guide seat 541 and the movable guide seat 542, so that the hole 101 on the workpiece body 11 is aligned with the axis of the mounting base plate 51. The sliding seat 52 is in position when it contacts the first limiting pin 521 or the second limiting pin 522. Tighten screw 56, and the guide protrusion 57 and the guide groove 571 cooperate to ensure accurate locking direction, completing the position locking.

[0051] Angle Adjustment: During radial rotation, the first drive motor 41 drives the rotating pin to rotate via belt drive, causing the mounting plate 3011 and the quick-release clamp 300 to rotate around the axis of the rotating pin in a horizontal plane, thus adjusting the radial angle of the workpiece. During axial rotation, the second drive motor 42 drives the rotating shaft and flange to rotate via belt drive, causing the quick-release clamp 300 to rotate around the axis of the rotating shaft in a vertical plane, thus adjusting the axial angle of the workpiece. The second drive belt 423 moves within the track groove 4231 to avoid interference.

[0052] Machining process: The feed mechanism 201 drives the machining head 200 to machine hole 101. After machining, hole 102 is moved to the machining position according to the hole position switching steps described above, and machining continues. After all holes are machined, the adjusting handwheel is rotated to release the moving chuck 532, and the workpiece is removed.

[0053] The above are preferred embodiments of the present invention. Those skilled in the art can make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments described above. Any obvious improvements, substitutions or modifications made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims

1. A quick-release clamping structure for a five-axis linkage machining center, comprising a frame (100), a machining head (200) disposed on the upper end face of the frame (100), a feed mechanism one (201) for driving the machining head (200) to feed, a quick-release clamping body (300) disposed relative to the machining head (200), a mounting plate (3011) fixedly connected to the quick-release clamping body (300), a base (301) connected to the mounting plate (3011), a feed mechanism two (302) for driving the quick-release clamping body (300) to feed, and an adjustment mechanism for driving the angle adjustment of the quick-release clamping body (300), characterized in that: The quick-release clamp (300) is rotatably connected to the base (301) through an adjustment mechanism; The quick-release clamp (300) includes a mounting base plate (51) fixedly connected to the mounting plate (3011), a sliding seat (52) slidably disposed on the upper surface of the mounting base plate (51), a locking component for locking the sliding seat (52), a fixed card seat (531) fixedly disposed on one end of the upper surface of the sliding seat (52), a movable card seat (532) slidably disposed on the upper surface of the sliding seat (52), and an adjustment component for driving the movable card seat (532) to move. The locking assembly includes a guide assembly for guiding the movement of the slide (52) and a limiting assembly for limiting the movement of the slide (52).

2. The quick-release fixture structure for a five-axis linkage machining center according to claim 1, characterized in that: The guide assembly includes a fixed guide seat (541) fixedly disposed on the mounting base (51) and slidably connected to the sliding seat (52), a movable guide seat (542) disposed on the other side of the sliding seat (52), a limiting seat (55) fixedly disposed on the mounting base (51) and slidably connected to the movable guide seat (542), and a locking member for locking the movable guide seat (542).

3. The quick-release fixture structure for a five-axis linkage machining center according to claim 2, characterized in that: The adjustment assembly includes a second screw (61) rotatably mounted on a sliding seat (52), a limiting retaining ring (611) fixedly mounted on the outer periphery of the second screw (61), and a limiting slot (5320) mounted on the movable card seat (532) that is adapted to the limiting retaining ring (611).

4. The quick-release fixture structure for a five-axis linkage machining center according to claim 3, characterized in that: The clamping surfaces of the fixed card holder (531) and the movable card holder (532) are respectively set as micro-conical surfaces, and elastic buffer pads are provided on the clamping surfaces.

5. The quick-release fixture structure for a five-axis linkage machining center according to claim 4, characterized in that: The locking component includes a screw (56) that passes through the movable guide seat (542) and connects to the mounting base plate (51), a guide protrusion (57) fixedly disposed at one end of the movable guide seat (542) relative to the limiting seat (55), and a guide groove (571) disposed on the inner side of the limiting seat (55) and adapted to the guide protrusion (57).

6. The quick-release fixture structure for a five-axis linkage machining center according to claim 5, characterized in that: The limiting component includes a first limiting pin (521) disposed at one end of the upper surface of the mounting base plate (51) and a second limiting pin (522) disposed at the other end of the mounting base plate (51).

7. The quick-release fixture structure for a five-axis linkage machining center according to claim 6, characterized in that: The first limiting pin (521) and the second limiting pin (522) are respectively connected to the mounting base plate (51) by fixing nuts, and the mounting base plate (51) is provided with a square and round hole for the first limiting pin (521) and the second limiting pin (522) to pass through.

8. The quick-release fixture structure for a five-axis linkage machining center according to claim 7, characterized in that: The adjustment mechanism includes a radial rotation mechanism and an axial rotation mechanism; The radial rotation mechanism includes a first drive motor (41) fixedly connected to the base (301), a first transmission pulley (411) connected to the output shaft a of the first drive motor (41), a transmission belt (413) connected to the first transmission pulley (411), and a second transmission pulley (412) connected to the other end of the transmission belt (413). The second transmission pulley (412) is connected to the mounting plate (3011) via a rotating pin. The axial rotation mechanism includes a mounting plate (420) fixedly connected to the rotating pin on one side, a second drive motor (42) fixedly mounted on the mounting plate (420), a first transmission pulley (421) connected to the output shaft b of the second drive motor (42), a transmission belt (423) connected to the first transmission pulley (421), and a second transmission pulley (422) connected to the transmission belt (423). The second transmission pulley (422) is connected to a flange via a rotating shaft. The flange is rotatably connected to the mounting plate (3011) and fixedly connected to the mounting base plate (51).

9. The quick-release fixture structure for a five-axis linkage machining center according to claim 7, characterized in that: The base (301) is provided with a track groove (4231) adapted to the transmission belt (423). The track groove (4231) is set as an arc-shaped structure, and its center coincides with the axis of the rotating pin.

10. The quick-release fixture structure for a five-axis linkage machining center according to claim 9, characterized in that: A guide block (5321) is also fixedly provided on the upper end face of the sliding seat (52). The length direction of the guide block (5321) is parallel to the axial direction of the screw (61) and is used to guide the movement of the movable card seat (532).

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