Dynamic balancing adjusting device of five-axis linkage machining center
Patent Information
- Application Number
- CN202611340060.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-09-01
- Publication Date
- 2026-10-09
AI Technical Summary
[0004]本发明的目的在于克服上述技术不足，提出一种五轴联动加工中心的动平衡调节装置，解决现有技术中五轴联动加工中心通常采用固定式通用夹具对工件进行定位装夹，导致支撑不稳、受力不均，装夹后易产生倾斜或振动，影响定位精度和加工质量的技术问题
[0015]与现有技术相比，本发明提供的五轴联动加工中心的动平衡调节装置通过驱动齿轮同时啮合第一压件和第二压件，在对工件的凹凸不平的顶部进行定位时，可以驱使驱动齿轮下降，驱动齿轮带动第一压件抵压工件顶部的一个面，此时，驱动齿轮可以继续下降，通过啮合作用带动第二压件继续下降，直至第二压件抵压工件的顶部的另一个面，从而能够适应不同高度及外形尺寸的工件；同时，由于第一压件和第二压件相互独立且可分别升降，二者能够针对工件顶部凹凸不平的不同区域进行多点独立支撑，提高了工件定位的稳定性和定位精度。
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Figure CN122876183A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of machine tool processing technology, and specifically to a dynamic balancing device for a five-axis linkage machining center. Background Technology
[0002] Five-axis machining centers, as high-end CNC machining equipment, are widely used in the efficient and precision milling of complex curved parts in aerospace, precision molds, and automotive parts industries due to their ability to coordinate movements simultaneously in five degrees of freedom. In five-axis machining, the workpiece's positioning accuracy and clamping stability directly determine the final machining quality. However, workpieces encountered in actual production often have varying sizes and complex shapes, especially some with irregular, uneven tops, which places higher demands on the adaptability of the positioning device.
[0003] In existing technologies, five-axis linkage machining centers typically use fixed universal fixtures to position and clamp workpieces. The positioning reference surface of the fixture is mostly a single planar structure. When facing a workpiece with an uneven top, the planar positioning surface of the fixture forms point contact or line contact with the top surface of the workpiece, resulting in unstable support and uneven force. After clamping, it is easy to tilt or vibrate, affecting the positioning accuracy and machining quality. Summary of the Invention
[0004] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a dynamic balance adjustment device for a five-axis linkage machining center. This device solves the technical problem that in the prior art, five-axis linkage machining centers typically use fixed universal fixtures to position and clamp the workpiece, resulting in unstable support, uneven force, and easy tilting or vibration after clamping, which affects positioning accuracy and machining quality.
[0005] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution: This invention provides a dynamic balancing device for a five-axis linkage machining center, comprising: Fixed bracket; The top positioning assembly includes a first pressing member and a second pressing member, both of which are slidably connected to the fixed bracket and slide in parallel directions. A driving space is formed between the first and second pressing members. The drive assembly includes a drive component, a movable frame, and a drive gear connected in sequence. The drive component is disposed on the fixed bracket. The drive gear is rotatably connected to the movable frame. The drive gear is located in the drive space and simultaneously engages with the first pressure component and the second pressure component. The drive component is used to drive the movable frame and the drive gear to rise and fall, so that the drive gear drives the first pressure component and the second pressure component to rise and fall.
[0006] In some embodiments, the first pressing member has a first toothed surface on the side facing the drive gear, and the second pressing member has a second toothed surface on the side facing the drive gear, the second toothed surface and the first toothed surface respectively meshing with the left and right sides of the drive gear.
[0007] In some embodiments, the first pressure member and the second pressure member have the same structure. The first pressure member includes a slider and a pressure block that are detachably connected. The slider is slidably connected to the fixed bracket, and the pressure block is located at the bottom of the slider.
[0008] In some embodiments, the pressure block is rotatably connected to the slider and can adjust the pressing surface angle of the pressure block during rotation.
[0009] In some embodiments, the slider has a plurality of positioning holes arranged at equal angles around the rotation axis of the pressure block, and the pressure block has a through screw hole. When the pressure block rotates around its rotation axis, it can drive the screw hole to align with the axis of any of the positioning holes.
[0010] In some embodiments, the first pressure member further includes an elastic cushioning pad, which is detachably connected to the pressure block.
[0011] In some embodiments, the driving component includes a first driving cylinder and a second driving cylinder, both of which are mounted on the fixed bracket and their telescopic rods are arranged in parallel and simultaneously connected to the movable frame.
[0012] In some embodiments, the dynamic balancing device of the five-axis linkage machining center further includes a positioning platform and a side-bottom positioning component. The side-bottom positioning component and the top positioning component are both disposed on the positioning platform. The side-bottom positioning component is used to position the bottom and sides of the workpiece.
[0013] In some embodiments, the side bottom positioning assembly includes a fixed box, a first clamping arm, a second clamping arm, and a supporting base. The supporting base is slidably connected to the fixed box. The first clamping arm and the second clamping arm are both rotatably connected to the fixed box via torsion springs. One end of the first clamping arm and the second clamping arm are movably abutted against the left and right sides of the supporting base. When the supporting base slides, it can drive the clamping ends of the first clamping arm and the second clamping arm to move closer or further apart.
[0014] In some embodiments, the left and right sides of the support base are respectively provided with a first inclined surface and a second inclined surface. The first inclined surface and the second inclined surface are formed in a dovetail shape. The first inclined surface slides against the end of the first clamping arm, and the second inclined surface slides against the end of the second clamping arm. The first inclined surface and the second inclined surface are both arc-shaped and their grooves are arranged opposite each other.
[0015] Compared with the prior art, the dynamic balancing device of the five-axis linkage machining center provided by the present invention uses a drive gear to simultaneously engage the first and second pressing components. When positioning the uneven top of the workpiece, the drive gear can be driven to descend, causing the first pressing component to press against one surface of the workpiece top. At this time, the drive gear can continue to descend, driving the second pressing component to continue descending through the meshing action until the second pressing component presses against the other surface of the workpiece top. This allows it to adapt to workpieces of different heights and dimensions. At the same time, since the first and second pressing components are independent and can be raised and lowered separately, they can provide multi-point independent support for different areas of the uneven top of the workpiece, improving the stability and positioning accuracy of the workpiece. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the dynamic balancing device for a five-axis linkage machining center provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the internal structure of the dynamic balancing device for a five-axis linkage machining center provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the top positioning component provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the driving component provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the side bottom positioning component provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of a workpiece provided in one embodiment of the present invention; Figure 7 This is a schematic diagram of the workpiece provided in another embodiment of the present invention. Detailed Implementation
[0017] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.
[0018] To address the technical problem that existing five-axis machining centers typically use fixed universal fixtures for workpiece positioning and clamping, where the fixture's positioning reference surface is often a single planar structure, and when facing a workpiece with an uneven top, the planar positioning surface of the fixture forms point or line contact with the top surface of the workpiece, leading to unstable support, uneven force distribution, and easy tilting or vibration after clamping, thus affecting positioning accuracy and machining quality, this invention provides a dynamic balancing adjustment device for a five-axis machining center. This device can achieve stable positioning of workpieces of different sizes and with uneven tops, enabling the first and second clamping components to provide multi-point independent support for different height areas of the workpiece's top surface, thereby improving clamping stability and positioning accuracy.
[0019] It should be noted that the dynamic balancing adjustment device of the five-axis linkage machining center described in this invention is used for positioning in milling of complex curved surface workpieces such as aerospace parts, precision molds, and automotive parts. For ease of explanation, this invention will only use the application of the dynamic balancing adjustment device of the five-axis linkage machining center to five-axis milling of complex curved surface workpieces as an example. The principle of the dynamic balancing adjustment device of the five-axis linkage machining center in other types of processing equipment is essentially the same as that in the five-axis linkage machining center, and will not be described in detail here.
[0020] Please see Figures 1 to 3 , Figure 1This is a schematic diagram of the dynamic balancing device of a five-axis linkage machining center according to an embodiment of the present invention. The dynamic balancing device of the five-axis linkage machining center includes a fixed bracket 1, a top positioning component 2, and a drive component 3. The top positioning component 2 includes a first pressing member 21 and a second pressing member 22. The first pressing member 21 and the second pressing member 22 are slidably connected to the fixed bracket 1 and their sliding directions are parallel to each other. The first pressing member 21 and the second pressing member 22 form a drive space 23 at an interval. The drive component 3 includes a drive member 31, a movable frame 32, and a drive gear 33 connected in sequence. The drive member 31 is located on the fixed bracket 1. The drive gear 33 is rotatably connected to the movable frame 32. The drive gear 33 is located in the drive space 23 and simultaneously meshes with the first pressing member 21 and the second pressing member 22. The drive member 31 is used to drive the movable frame 32 and the drive gear 33 to rise and fall, so that the drive gear 33 drives the first pressing member 21 and the second pressing member 22 to rise and fall. In this embodiment, the driving component 31 can drive the movable frame 32 and the driving gear 33 to descend during operation. As the driving gear 33 descends, it drives the first pressing component 21 and the second pressing component 22 to descend synchronously through gear meshing. When the first pressing component 21 presses against one surface of the workpiece top, it pauses its descent. As the driving gear 33 continues to descend, it rolls along the teeth of the first pressing component 21. Simultaneously, the driving gear 33 continues to drive the second pressing component 22 to descend through gear meshing until the second pressing component 22 presses against the other surface of the workpiece top, thus completing the complete positioning of the workpiece top. At this point, the meshing action of the driving gear 33 with the first and second pressing components 21 and 22 achieves locking of the two pressing components, ensuring stable positioning of the workpiece top. This embodiment, through this scheme, can adapt to the stable positioning of workpieces with uneven top surfaces, avoiding the problem of point or line contact between the traditional single-plane positioning surface and the uneven top surface, increasing the effective contact area, and stabilizing the force on the workpiece.
[0021] In one embodiment, please refer to Figure 3The first pressing member 21 has a first tooth surface 211 on the side facing the drive gear 33, and the second pressing member 22 has a second tooth surface 221 on the side facing the drive gear 33. The second tooth surface 221 and the first tooth surface 211 mesh with the left and right sides of the drive gear 33, respectively. In this embodiment, the first tooth surface 211 and the second tooth surface 221 can be a spur gear structure, and the drive gear 33 is a cylindrical spur gear with a module matching the rack. The drive gear 33 is rotatably mounted on the movable frame 32 by bolts 331, and its left and right tooth surfaces mesh with the first tooth surface 211 and the second tooth surface 221 with no backlash or very little backlash, respectively. The drive gear 33 is detachably mounted on the movable frame 32 by bolts 331, making it easy to disassemble and replace the drive gear 33. When the driving component 31 drives the movable frame 32 and the driving gear 33 to rise and fall, the driving gear 33 simultaneously meshes with the first tooth surface 211 and the second tooth surface 221, thereby synchronously driving the first pressing component 21 and the second pressing component 22 to rise and fall, realizing the adjustment of the two pressing components.
[0022] In one embodiment, please refer to Figure 3 The fixed bracket 1 includes a plate 11, a first transverse slide rail 12, a second transverse slide rail 13, a first carriage 14, and a second carriage 15. The first transverse slide rail 12 and the second transverse slide rail 13 are both horizontally fixed to the plate 11. The plate 11 has a hollow center. The first transverse slide rail 12 and the second transverse slide rail 13 are located on the left and right sides of the hollow center, and two of each are arranged vertically. The first carriage 14 slidably connects to the two first transverse slide rails 12 on the left side of the hollow center, and the second carriage 15 slidably connects to the two second transverse slide rails 13 on the right side of the hollow center. A first cylinder 16 and a second cylinder 17 are fixedly installed on both sides of the hollow center on the plate 11. The first cylinder 16 is connected to the first carriage 14, and the second cylinder 17 is connected to the second carriage 15. The first cylinder 16 and the second cylinder 17 can respectively drive the first carriage 14 and the second carriage 15 to slide back and forth in the horizontal direction. The first pressing member 21 is vertically slidably disposed on the first slide 15, and the second pressing member 22 is vertically slidably disposed on the second slide 15. In this embodiment, the positions of the first pressing member 21 and the second pressing member 22 in the horizontal direction can be adjusted by controlling the first slide 14 and the second slide 15 to slide closer to or further apart from each other in the horizontal direction. This allows the first pressing member 21 and the second pressing member 22 to press and position different concave and convex surfaces on the top of the workpiece, improving the compatibility of workpiece positioning. After the positions of the first pressing member 21 and the second pressing member 22 are adjusted, a drive gear 33 of the corresponding diameter can be replaced so that the drive gear 33 can maintain simultaneous engagement of the first pressing member 21 and the second pressing member 22.
[0023] In one embodiment, please refer to Figure 3The first pressing component 21 and the second pressing component 22 have the same structure. The first pressing component 21 includes a detachably connected slider 212 and a pressing block 213. The slider 212 is slidably connected to the first slide 15, and the pressing block 213 is located at the bottom of the slider 212. In this embodiment, the slider 212 is a long strip-shaped metal block, and the material can be Q345 steel. The first slide 14 is vertically mounted with a guide slide rod 141 and a vertical slide rail 142. The slider 212 is slidably sleeved on the guide slide rod 141, and at the same time, the slider 212 is slidably engaged with the vertical slide rail 142 to ensure the accuracy of the vertical movement of the slider 212 and prevent radial wobbling. The pressing block 213 is located at the bottom of the slider 212 and is used to press against the concave and convex surfaces of the top of the workpiece. An elastic buffer pad 216 is bonded to the bottom of the pressing block 213. The elastic buffer pad 216 can be made of polyurethane, rubber, or nylon. When the pressure block 213 presses down and contacts the top surface of the workpiece, the elastic buffer pad 216 first contacts the workpiece and generates elastic deformation. On the one hand, it can absorb the impact load during the pressing process and avoid rigid contact causing indentation or damage to the workpiece surface. On the other hand, the elastic buffer pad 216 can generate adaptive deformation according to the micro-unevenness of the top surface of the workpiece, further increasing the actual contact area and improving friction and positioning stability.
[0024] In one embodiment, please refer to Figure 3 The pressure block 213 is rotatably connected to the slider 212, and the angle of the pressing surface of the pressure block 213 can be adjusted during rotation. In this embodiment, the pressure block 213 is rotatably connected to the bottom of the slider 212 via its rotation axis 217. The rotation axis 217 is perpendicular to both the sliding direction of the first slide 14 and the sliding direction of the slider 212. The pressure block 213 can rotate within a 360° range around its rotation axis 217, thereby adjusting the angle between the bottom surface (pressing surface) of the pressure block 213 and the horizontal plane. When the top surface of the workpiece is an inclined plane or a partially inclined surface, the operator can pre-rotate the pressure block 213 to make its pressing surface fit against a local area of the top surface of the workpiece, forming surface contact rather than line contact, further improving the adaptability to workpieces with irregular top surfaces.
[0025] Furthermore, the slider 212 has multiple angularly arranged positioning holes (not shown in the figure) around the rotation axis 217 of the pressure block 213, and the pressure block 213 has through screw holes 215. When the pressure block 213 rotates around its rotation axis 217, it can drive the screw holes 215 to align with the axis of any positioning hole 214. In this embodiment, the positioning holes 214 are arranged at angular intervals of 15° or 30° around the rotation axis 217 of the pressure block 213, and the number can be 6 to 12. The positioning holes 214 are blind holes or through holes, and copper sleeves can be inserted into the holes to improve wear resistance. The screw holes 215 are M6 threaded holes. When the pressure block 213 rotates to the required angle, the screw holes 215 are coaxially aligned with the corresponding positioning holes 214. The pressure block 213 and the slider 212 can be locked by screwing in set screws or positioning pins to prevent the pressure block 213 from rotating due to cutting forces during processing, and to ensure that the angle of the extrusion surface remains unchanged during processing.
[0026] In one embodiment, please refer to Figure 3 and Figure 4 The driving component 31 includes a first driving cylinder 311 and a second driving cylinder 312. Both the first driving cylinder 311 and the second driving cylinder 312 are mounted on the fixed bracket 1, and their telescopic rods are arranged in parallel and simultaneously connected to the movable frame 32. In this embodiment, the first driving cylinder 311 and the second driving cylinder 312 can be standard double-acting cylinders. The cylinder bodies of the two cylinders are symmetrically mounted on the top crossbeam of the fixed bracket 1, and the piston rod ends of the two cylinders are simultaneously connected to the movable frame 32 through floating joints, forming a dual-cylinder synchronous drive structure. The dual-cylinder layout not only provides sufficient downward pressure to clamp the workpiece, but also ensures the parallelism and stability of the movable frame 32 during the lifting process, avoiding the tilting of the movable frame 32 due to uneven load when driven by a single cylinder, thereby ensuring the meshing accuracy of the driving gear 33 with the first tooth surface 211 and the second tooth surface 221.
[0027] In one embodiment, please refer to Figure 2 and Figure 5 The dynamic balancing device of the five-axis linkage machining center also includes a positioning platform 4 and a side-bottom positioning component 5. Both the side-bottom positioning component 5 and the top positioning component 2 are located on the positioning platform 4. The side-bottom positioning component 5 is used to position the bottom and sides of the workpiece. In this embodiment, the positioning platform 4 is a high-strength cast iron platform with T-slots or an array of threaded holes machined on its surface for mounting the fixing bracket 1 and the side-bottom positioning component 5. The side-bottom positioning component 5 is arranged directly in front of the first clamping member 21 and the second clamping member 22, and is used to initially position the workpiece in the horizontal and vertical directions, ensuring the workpiece has a definite position before being clamped at the top, thereby forming an upper and lower clamping engagement with the top positioning component 2 to achieve multi-degree-of-freedom constraint on the workpiece.
[0028] Further, please refer to Figure 5The side-bottom positioning assembly 5 includes a fixed box 51, a first clamping arm 52, a second clamping arm 53, and a supporting base 54. The supporting base 54 is slidably connected to the fixed box 51. The first clamping arm 52 and the second clamping arm 53 are both rotatably connected to the fixed box 51 via torsion springs. One end of the first clamping arm 52 and the second clamping arm 53 movably abuts against the left and right sides of the supporting base 54. When the supporting base 54 slides, it can drive the clamping ends of the first clamping arm 52 and the second clamping arm 53 to move closer or further apart. In this embodiment, the fixed box 51 is a cast aluminum box with an open top, and the bottom of the fixed box 51 is fixed inside the positioning platform 4. The supporting base 54 is a sliding structure. Two fixing blocks 511 are fixedly installed inside the fixed box 51, and a sliding space is formed between the two fixing blocks 511. The supporting base 54 is slidably disposed in the sliding space and can slide up and down along the sliding space. The top surface of the supporting base 54 is used to support the bottom of the workpiece, forming a reference support in the height direction. The middle parts of the first clamping arm 52 and the second clamping arm 53 are mounted on the inner walls of both sides of the fixed box 51 via pins and torsion springs. The torsion springs provide preload force so that the clamping ends of the two clamping arms are normally in an open state. A positioning cylinder 512 is provided at the bottom of the fixed box 51. The telescopic rod of the positioning cylinder 512 is connected to the bottom of the support base 54 and is used to drive the support base 54 to rise and fall. When the workpiece is placed on the support base 54, the positioning cylinder 512 pushes the support base 54 to slide upward. The left and right inclined surfaces of the support base 54 press against the lower ends of the first clamping arm 52 and the second clamping arm 53, causing the two clamping arms to rotate around their respective pins, thereby driving the clamping ends of the first clamping arm 52 and the second clamping arm 53 to move closer together, realizing automatic clamping of the side of the workpiece.
[0029] Further, please refer to Figure 5The support base 54 has a first inclined surface 541 and a second inclined surface 542 on its left and right sides, respectively. The first inclined surface 541 and the second inclined surface 542 are dovetail-shaped. The first inclined surface 541 slides against the end of the first clamping arm 52, and the second inclined surface 542 slides against the end of the second clamping arm 53. Both the first inclined surface 541 and the second inclined surface 542 are arc-shaped, and their grooves are arranged opposite to each other. In this embodiment, the first inclined surface 541 and the second inclined surface 542 have the same inclination angle (both are 60°) and opposite inclination directions to form a dovetail shape. The ends of the first clamping arm 52 and the second clamping arm 53 that abut against the inclined surfaces are equipped with first rollers 55 to reduce sliding friction, and the clamping ends of the first clamping arm 52 and the second clamping arm 53 are equipped with second rollers 56 to reduce friction with the workpiece. As the support base 54 slides downward, the lower ends of the first clamping arm 52 and the second clamping arm 53 gradually approach each other, and the clamping ends of the first clamping arm 52 and the second clamping arm 53 gradually open, making it convenient to place the workpiece between the support base 54, the first clamping arm 52, and the second clamping arm 53. After the workpiece is placed, the positioning cylinder 512 drives the support base 54 to slide upward, and the first inclined surface 541 and the second inclined surface 542 gradually press against the lower ends of the first clamping arm 52 and the second clamping arm 53, causing the lower ends of the two to gradually open, and the clamping ends of the first clamping arm 52 and the second clamping arm 53 to gradually approach each other to clamp the workpiece, thereby achieving reliable clamping of the side of the workpiece and adapting to workpieces of different widths.
[0030] Please see Figure 1 and Figure 2 Two side-bottom positioning components 5 and two top positioning components 2 are provided, each located at one end of the positioning platform 4. The two side-bottom positioning components 5 can support both ends of the workpiece, and the two top positioning components 2 press down on the tops of both ends of the workpiece, providing stable support and clamping positioning for the workpiece, resulting in stable workpiece positioning. In other embodiments, depending on the shape of the workpiece and the positioning requirements, three, four, or more top positioning components 2 and side-bottom positioning components 5 can be provided to fix different parts of the workpiece respectively.
[0031] Please see Figure 6 and Figure 7 This illustrates two types of workpieces commonly used in this invention. Figure 6 The workpiece 6 shown is in the shape of a cuboid, and both ends of the cuboid workpiece are provided with a first notch 61. Figure 7 The workpiece 6 shown is semi-cylindrical in shape, with a second notch 62 at both ends. Due to product requirements, a first notch 61 and a second notch 62 must be made on the workpiece, resulting in an uneven top surface. Therefore, the top positioning component 2 provided by this invention has a first pressing member 21 and a second pressing member 22 specifically used to position the uneven top of the workpiece, ensuring stable positioning and preventing workpiece displacement during processing, which helps improve processing accuracy.
[0032] In one embodiment, please refer to Figure 1 The dynamic balancing adjustment device of the five-axis linkage machining center also includes a work box 7 and a robot arm 8. The work box 7 is provided with a working cavity. The aforementioned fixed bracket 1, top positioning component 2, drive component 3, positioning platform 4, robot arm 8 and side bottom positioning component 5 are all installed in the working cavity. Three fixed slide rails 9 are also arranged in parallel at the bottom of the working cavity. The robot arm 8 is slidably mounted on one of the fixed slide rails 9, and the positioning platform 4 is slidably mounted on the other two fixed slide rails 9, so that the robot arm 8 and the positioning platform 4 can slide back and forth along the length direction of the fixed slide rails 9 to adjust the machining position, so that the robot arm 8 can perform milling machining on the workpiece that has been fixed on the positioning platform 4.
[0033] The bottom of the work box 7 is equipped with omnidirectional casters 71 for moving the device. An alarm 72 is installed on the top of the work box 7; when the device malfunctions, the alarm 72 will sound to alert the operator. A touchscreen display 73 is installed on the front of the work box 7; the operator can control the robot arm 8 and other working components to automate the work, thereby completing the positioning and processing of the workpiece.
[0034] To better understand this invention, the following is combined with... Figures 1 to 7 The technical solution of the present invention will be described in detail below: When the dynamic balancing device of the present invention is in operation, the workpiece is first placed on the side bottom positioning component 5 on the positioning platform 4. The support base 54 slides into the fixed box 51 under the weight of the workpiece or the action of external driving. Using the dovetail-shaped first inclined surface 541 and second inclined surface 542 arranged opposite to each other on its two sides, the lower ends of the first clamping arm 52 and the second clamping arm 53 are respectively squeezed, so that the lower ends of the two clamping arms open and the clamping ends move closer together, automatically adapting to and clamping the side and bottom of the workpiece. At the same time, the first driving cylinder 311 and the second driving cylinder 312 in the top positioning component 2 synchronously drive the movable frame 32 and the driving gear 33 to rise and fall. The driving gear 33 simultaneously... The first tooth surface 211 and the second tooth surface 221 of the first pressing component 21 and the second pressing component 22 engage with each other, driving the two pressing components to rise and fall. This causes the elastic buffer pad 216 on the bottom surface of the pressing block 213 to press the uneven areas of different heights on the top of the workpiece. The operator can also pre-rotate the pressing block 213 to adjust its pressing surface angle. The positioning hole on the slider and the screw hole on the pressing block are locked together to ensure that the pressing surface angle remains unchanged during processing. This allows the top positioning component and the side bottom positioning component to form an upper and lower clamping engagement, jointly achieving multi-point independent support and multi-degree-of-freedom constraint for workpieces of different sizes and irregular shapes, significantly improving clamping stability and positioning accuracy.
[0035] The specific embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made in accordance with the technical concept of the present invention should be included within the scope of protection of the claims of the present invention.
Claims
1. A dynamic balancing device for a five-axis linkage machining center, characterized in that, include: Fixed bracket; The top positioning component includes a first pressing member and a second pressing member. The first pressing member and the second pressing member are slidably connected to the fixed bracket and their sliding directions are parallel to each other. The first pressing member and the second pressing member are spaced apart to form a driving space. and The drive assembly includes a drive component, a movable frame, and a drive gear connected in sequence. The drive component is disposed on the fixed bracket. The drive gear is rotatably connected to the movable frame. The drive gear is located in the drive space and simultaneously engages with the first pressure component and the second pressure component. The drive component is used to drive the movable frame and the drive gear to rise and fall, so that the drive gear drives the first pressure component and the second pressure component to rise and fall.
2. The dynamic balancing device for a five-axis linkage machining center according to claim 1, characterized in that, The first pressing member has a first toothed surface on the side facing the drive gear, and the second pressing member has a second toothed surface on the side facing the drive gear. The second toothed surface and the first toothed surface respectively mesh with the left and right sides of the drive gear.
3. The dynamic balancing device for a five-axis linkage machining center according to claim 1, characterized in that, The first pressing component has the same structure as the second pressing component. The first pressing component includes a slider and a pressing block that are detachably connected. The slider is slidably connected to the fixed bracket, and the pressing block is located at the bottom of the slider.
4. The dynamic balancing device for a five-axis linkage machining center according to claim 3, characterized in that, The pressure block is rotatably connected to the slider, and the angle of the pressing surface of the pressure block can be adjusted when it rotates.
5. The dynamic balancing device for a five-axis linkage machining center according to claim 4, characterized in that, The slider has multiple positioning holes arranged at equal angles around the rotation axis of the pressure block, and the pressure block has a through screw hole. When the pressure block rotates around its rotation axis, it can drive the screw hole to align with the axis of any of the positioning holes.
6. The dynamic balancing device for a five-axis linkage machining center according to claim 3, characterized in that, The first pressure component further includes an elastic buffer pad, which is detachably connected to the pressure block.
7. The dynamic balancing device for a five-axis linkage machining center according to claim 1, characterized in that, The driving component includes a first driving cylinder and a second driving cylinder. Both the first driving cylinder and the second driving cylinder are located on the fixed bracket, and their telescopic rods are arranged in parallel and connected to the movable frame.
8. The dynamic balancing device for a five-axis linkage machining center according to claim 1, characterized in that, The dynamic balancing device of the five-axis linkage machining center also includes a positioning platform and a side-bottom positioning component. The side-bottom positioning component and the top positioning component are both located on the positioning platform. The side-bottom positioning component is used to position the bottom and sides of the workpiece.
9. The dynamic balancing device for a five-axis linkage machining center according to claim 8, characterized in that, The side bottom positioning assembly includes a fixed box, a first clamping arm, a second clamping arm, and a supporting base. The supporting base is slidably connected to the fixed box. The first clamping arm and the second clamping arm are both rotatably connected to the fixed box via torsion springs. One end of the first clamping arm and the second clamping arm are movably abutted against the left and right sides of the supporting base. When the supporting base slides, it can drive the clamping ends of the first clamping arm and the second clamping arm to move closer or further apart.
10. The dynamic balancing device for a five-axis linkage machining center according to claim 9, characterized in that, The support base has a first inclined surface and a second inclined surface on its left and right sides, respectively. The first and second inclined surfaces are dovetail-shaped. The first inclined surface slides against the end of the first clamping arm, and the second inclined surface slides against the end of the second clamping arm. Both the first and second inclined surfaces are arc-shaped and their grooves are arranged opposite each other.