A high-precision hollow alignment platform that meets the positioning requirements of various round-edge workpieces
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-07-14
- Publication Date
- 2026-08-14
AI Technical Summary
这种方式存在诸多局限性：首先，人工对位受操作者经验、视觉判断及疲劳程度影响显著，重复定位精度难以保证，易引入毫米乃至亚毫米级的对位偏差；其次，操作效率低下，难以适应现代化流水线对于节拍与产能的要求；再者，人工装夹过程中，夹具与工件表面直接接触，极易造成工件表面划伤、压痕或污染，影响工件外观质量甚至功能性，尤其在光学表面、镀膜部件或高光洁度工件上该问题尤为突出
本发明提供一种满足多种圆边工件定位的高精度中空式对位平台，通过设计产品吸附柱，产品吸附柱包括铜柱、吸附块夹具、产品吸附块和锁紧螺母，铜柱上部一体成型螺纹台以及位于螺纹台上方的定位柱，产品吸附块插入定位柱内部，吸附块夹具套设于定位柱外侧，并压紧产品吸附块，锁紧螺母套装在吸附块夹具外侧，依靠锁紧力将产品吸附块压紧固定；工作时，铜柱上的通孔接通负压气源，将工件放置在产品吸附块上端，通过负压气源吸附在产品吸附块上端，实现工件的吸附固定，产品吸附柱作为临时载体，可有效避让工件中心区域，为从底部或内部进行的操作提供了空间；
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Figure CN122559946A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of alignment platform technology, and in particular to a high-precision hollow alignment platform that meets the positioning requirements of various round-edge workpieces. Background Technology
[0002] Round-edged workpieces are widely used in various industrial fields such as precision manufacturing, automated assembly, microelectronic equipment assembly, and high-precision testing. They typically refer to various parts, bases, flanges, lens assemblies, and pipe cap housings that are circular in shape or have axisymmetric features. During the processing and assembly of these workpieces, strict centering, axial clamping, or precise cooperation with other components is often required to ensure the positioning accuracy, sealing performance, or optical alignment effect of subsequent processes.
[0003] Currently, the alignment and clamping of round-edge workpieces largely rely on manual operation or traditional mechanical fixtures. In manual operation, operators typically adjust the position visually or using simple alignment tools, followed by fixing with general-purpose fixtures or chucks. This method has several limitations: First, manual alignment is significantly affected by the operator's experience, visual judgment, and fatigue level, making it difficult to guarantee repeatability and easily introducing alignment deviations at the millimeter or even sub-millimeter level. Second, the operation efficiency is low, making it difficult to meet the cycle time and capacity requirements of modern production lines. Third, during manual clamping, the fixture is in direct contact with the workpiece surface, easily causing scratches, indentations, or contamination, affecting the workpiece's appearance quality and even functionality, especially on optical surfaces, coated parts, or high-gloss workpieces. Furthermore, traditional mechanical fixtures are usually designed for specific dimensions and lack adaptability. Once the workpiece size or shape changes, the fixture must be replaced or adjusted, resulting in long changeover times and insufficient flexibility on the production line, increasing equipment investment and production management costs.
[0004] With the advancement of intelligent manufacturing and automation, semi-automatic positioning devices such as pneumatic or electric chucks and self-centering vises are being adopted in some applications. While these devices improve efficiency to some extent, they still have some inherent drawbacks. For example, during the clamping process, two-jaw or three-jaw chucks can easily cause workpiece center shift or tilting if there are slight shape errors on the outer circle of the workpiece or uneven clamping force. Self-centering mechanisms are often complex in structure, requiring extremely high manufacturing and assembly precision, and are difficult to maintain high positioning accuracy under large dimensional variations. Especially in work scenarios where assembly, inspection, or light transmission is required from below or the center area of the workpiece, most clamping mechanisms cannot meet the design requirements of hollowness and clearance due to center obstruction or structural interference, thus limiting the feasibility of the process solution. Summary of the Invention
[0005] Therefore, the purpose of this invention is to provide a high-precision hollow alignment platform that meets the positioning needs of various round-edge workpieces. By using a hollow structure to avoid the central area of the workpiece and in conjunction with a three-jaw adaptive clamping mechanism, it can achieve high-precision automatic alignment and clamping of round-edge workpieces of various specifications, thereby solving the problems mentioned in the background art.
[0006] To achieve the above objectives, the following technical solution is adopted: A high-precision hollow alignment platform that meets the positioning needs of various round-edge workpieces includes a hollow base and a product adsorption column. A slide support plate is fixedly installed on the hollow base and on both sides of the product adsorption column. A slide base is fixedly installed on the slide support plate. A Z electric slide, an X electric slide, and a Y electric slide are installed sequentially from bottom to top on the upper part of the slide base. The upper part of the Y electric slide is fixedly installed with a gripper base, and a gripper fixture is installed on the upper part of the gripper base. The gripper fixture is used to fit and hold the product. The outer wall of the product adsorption column is mounted on the hollow base via a flange. The product adsorption column is used to adsorb products. The product adsorption column passes through the hollow base, the slide base, the Z electric slide, the X electric slide, the Y electric slide, and the hollow hole on the gripper fixture from bottom to top. The axis of the product adsorption column coincides with the clamping axis of the gripper fixture.
[0007] Preferably, the Z-electric slide table includes two L-shaped fixed plates symmetrically fixed on the slide table base and a Z-drive block. A cross ball bearing guide rail is fixedly installed on the L-shaped fixed plate. The Z-drive block is slidably installed on the L-shaped fixed plate through the cross ball bearing guide rail. The two Z-drive blocks are connected as one unit through a back plate. The upper surface of the Z-drive block is a sloping structure. One end of the Z-drive block in the sliding direction is connected to the output end of the Z-screw motor through a ball screw. A Z-moving plate is slidably connected to the upper part of the two Z-drive blocks. The lower two ends of the Z-moving plate are respectively provided with sloping grooves adapted to the upper surface of the Z-drive block. A cross ball bearing guide rail is fixedly installed on both sides of the bottom of the sloping groove. The Z-drive block is slidably connected to the sloping groove through the cross ball bearing guide rail. At the same time, a cross ball bearing guide rail is vertically installed on the inner side of the vertical end of the L-shaped fixed plate. One side of the Z-moving plate is vertically slidably connected to the L-shaped fixed plate through the cross ball bearing guide rail.
[0008] Preferably, the gripper includes a cylinder base plate, the lower part of which is fixedly connected to the gripper base via four hexagonal posts. A telescopic cylinder and a rotating fixed plate are fixedly installed on the cylinder base plate. A rotating moving plate is rotatably installed on the upper part of the rotating fixed plate. The rotating moving plate and the rotating fixed plate are annular structures. A long through hole is opened at the protruding end of the outer circumference of the rotating moving plate. A rotating fixed shaft is slidably arranged in the long through hole. The rotating fixed shaft is fixedly installed on the telescopic end of the telescopic cylinder. Three gripper pieces are evenly distributed around the circumference of the rotating moving plate. One end of the gripper piece is rotatably connected to the connecting fork shaft. The connecting fork shaft passes through the rotating moving plate and the rotating fixed plate and is fixedly connected to the cylinder base plate. The rotating moving plate has an arc-shaped through hole with the same center as the rotating moving plate. The connecting fork shaft passes through the arc-shaped through hole. A circular arc through hole is provided in the middle of the gripper plate, and a rotating fixed shaft is inserted through the circular arc through hole. The lower end of the rotating fixed shaft is fixedly connected to the rotating moving plate.
[0009] Preferably, the inner ring of the rotating moving plate is rotatably connected to the rotating fixed plate through a collar; a positioning groove is provided at the lower part of the end of the gripper piece away from the connecting fork shaft for holding and restricting the product; a tight-fit bearing is installed on the connecting fork shaft and is rotatably connected to the gripper piece through the tight-fit bearing.
[0010] Preferably, the X electric slide includes an X fixed plate and an X lead screw motor. The X fixed plate is fixedly installed on the upper part of the Z moving plate. A cross ball guide rail is installed on the X fixed plate, and the X fixed plate is slidably connected to the X moving plate through the cross ball guide rail. The X lead screw motor is fixed on one side of the X fixed plate, and the output end of the X lead screw motor is connected to the X moving plate.
[0011] Preferably, the Y electric slide includes a Y moving block and a Y lead screw motor, and a cross ball guide five is installed on the X moving plate. The X moving plate is slidably connected to the Y moving block through the cross ball guide five. The Y lead screw motor is fixedly installed on one side of the X moving plate, and the output end of the Y lead screw motor is connected to the Y moving block. The upper surface of the Y moving block is fixedly connected to the bottom of the gripper base. In addition, the sliding direction of the X-plate and the sliding direction of the Y-block are perpendicular to each other.
[0012] Preferably, the product adsorption column includes a copper column, an adsorption block clamp, a product adsorption block, and a locking nut. A through hole is formed in the middle of the outer wall of the copper column, and an air hole communicating with the through hole is formed along the axis at the upper end of the copper column. A threaded platform and a positioning post are integrally formed on the upper part of the copper column, with the positioning post located above the threaded platform and having a slot at its upper end. The product adsorption block has a columnar structure, with a locking block integrally formed in the middle of its outer wall. An air hole is formed through the product adsorption block along its axis. The lower end of the product adsorption block is inserted into the positioning post of the copper column, and the locking block is engaged in the slot. The adsorption block clamp passes through the outer wall of the positioning post, with its upper end passing through the product adsorption block and pressing against the locking block. A protrusion on the lower side wall of the adsorption block clamp engages with a protrusion on the upper surface of the threaded platform to prevent rotation of the adsorption block clamp. The locking nut passes through the outer wall of the adsorption block clamp and is threadedly connected to the threaded platform, achieving the positioning and installation of the product adsorption block.
[0013] The beneficial effects of this invention are: This invention provides a high-precision hollow alignment platform that meets the positioning needs of various round-edge workpieces. The platform features a product adsorption column, comprising a copper column, an adsorption block clamp, a product adsorption block, and a locking nut. The upper part of the copper column has an integrally formed threaded platform and a positioning column located above the threaded platform. The product adsorption block is inserted into the positioning column, and the adsorption block clamp is fitted onto the outside of the positioning column, pressing the product adsorption block firmly. The locking nut is fitted onto the outside of the adsorption block clamp, securing the product adsorption block with locking force. During operation, a negative pressure air source is connected to the through-hole on the copper column. The workpiece is placed on the upper end of the product adsorption block, and the negative pressure air source adsorbs and fixes the workpiece. The product adsorption column, acting as a temporary carrier, effectively avoids the central area of the workpiece, providing space for operations from the bottom or inside. By designing a gripper fixture for adaptive clamping, the three gripper plates perform high-precision automatic centering and clamping of multi-specification round-edge workpieces. The workpiece is clamped in a non-destructive or low-contact-stress manner to avoid damaging the workpiece surface, enabling rapid changeover and highly flexible production. It also ensures that the workpiece will not rotate or shift during processing and will always remain in the center position. It is suitable for the rapid and accurate positioning of round-edge workpieces in automated production lines. Attached Figure Description
[0014] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the Z-type electric slide table in this invention; Figure 3 This is a schematic diagram of the internal structure of the Z-type electric slide table in this invention; Figure 4 This is a schematic diagram of the Z-movement plate in this invention; Figure 5 This is a schematic diagram of the installation structure of the X electric slide and the Y electric slide in this invention; Figure 6 This is a schematic diagram of the structure of the X electric slide table in this invention; Figure 7 This is a schematic diagram of the gripper fixture in this invention; Figure 8 This is a schematic diagram of the installation structure of the collar and the tight-fit bearing in this invention; Figure 9 This is a schematic diagram of the product adsorption column in this invention; Figure 10 This is a schematic diagram of the copper pillar structure in this invention; Figure 11 This is a schematic diagram of the installation structure of the product adsorption block in this invention; Figure 12 This is a schematic diagram of the installation structure of the copper column, the adsorption block clamp, and the product adsorption block in this invention; Figure 13 This is a schematic diagram of the installation structure of the product adsorption block in this invention; Figure 14 This is a schematic diagram of the thrust exerted by the gripper on the workpiece in this invention.
[0015] In the diagram: 1. Hollow base; 2. Product adsorption column; 21. Copper column; 211. Through hole; 212. Air hole one; 213. Positioning column; 214. Slot; 215. Threaded platform; 22. Adsorption block clamp; 23. Product adsorption block; 231. Locking block; 232. Air hole two; 24. Locking nut; 3. Slide support plate; 4. Slide base; 5. Z electric slide; 51. L-shaped fixed plate; 52. Z drive block; 53. Z lead screw motor; 54. Z moving plate; 55. Back plate; 541. Slanted slide groove; 6. X electric slide; 61. X 62. Fixed plate; 63. X-screw motor; 7. Y-moving plate; 8. Y-electric slide; 9. Gripper base; 10. Gripper fixture; 11. Cylinder base plate; 12. Telescopic cylinder; 13. Rotating fixed plate; 14. Rotating moving plate; 15. Rotating fixed shaft one; 16. Gripper piece; 17. Connecting fork shaft; 18. Arc-shaped through hole one; 19. Arc-shaped through hole two; 10. Rotating fixed shaft two; 11. Shaft collar; 12. Positioning groove; 13. Tight-fit bearing; 14. Long through hole. Detailed Implementation
[0016] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0017] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.
[0018] Please refer to the attached document. Figure 1-14 A high-precision hollow alignment platform that meets the positioning of various round-edge workpieces includes a hollow base 1 and a product adsorption column 2. A slide support plate 3 is fixedly installed on the hollow base 1 and on both sides of the product adsorption column 2. A slide base 4 is fixedly installed on the slide support plate 3. A Z electric slide 5, an X electric slide 6 and a Y electric slide 7 are installed sequentially from bottom to top on the upper part of the slide base 4. The upper part of the Y electric slide table 7 is fixedly installed with a gripper base 8, and a gripper fixture 9 is installed on the upper part of the gripper base 8. The gripper fixture 9 is used to fit and hold the workpiece. The outer wall of the product adsorption column 2 is mounted on the hollow base 1 via a flange. The product adsorption column 2 is used to adsorb workpieces. The product adsorption column 2 passes through the hollow base 1, the slide base 4, the Z electric slide 5, the X electric slide 6, the Y electric slide 7 and the hollow hole on the gripper 9 from bottom to top. The axis of the product adsorption column 2 coincides with the clamping axis of the gripper 9. The Z-axis electric slide 5, X-axis electric slide 6, and Y-axis electric slide 7 drive the gripper 9 to achieve displacement operations in the Z, X, and Y directions, respectively.
[0019] For detailed instructions on the Z-type electric slide table 5, please refer to the attached document. Figure 1-4 : The Z-type electric slide table 5 includes two L-shaped fixed plates 51 symmetrically fixed on the slide table base 4 and a Z-drive block 52. A cross ball bearing guide rail is fixedly mounted on the L-shaped fixed plate 51. The Z-drive block 52 is slidably mounted on the L-shaped fixed plate 51 via the cross ball bearing guide rail. The two Z-drive blocks 52 are connected as one unit by a back plate 55. The upper surface of the Z-drive block 52 has a sloped structure. One or both Z-drive blocks 52 have one end in the sliding direction connected to the output end of a Z-screw motor 53 via a ball screw. The upper part of the Z-drive block 52 is slidably connected to the Z-moving plate 54. The lower ends of the Z-moving plate 54 are respectively provided with inclined grooves 541 that are adapted to the upper inclined surface of the Z-drive block 52. Cross ball guide rails II are fixedly installed on both sides of the bottom of the inclined grooves 541. The Z-drive block 52 is slidably connected to the inclined grooves 541 through the cross ball guide rails II. At the same time, the inner side of the vertical end of the L-shaped fixed plate 51 is vertically installed with cross ball guide rails III. One side of the Z-moving plate 54 is vertically slidably connected to the L-shaped fixed plate 51 through the cross ball guide rails III. The Z-screw motor 53 starts, and the Z-screw motor 53 drives the Z-drive block 52 to slide on the cross ball guide rail 1 through the ball screw. The upper inclined surface of the Z-drive block 52 is adapted to support the inclined slide grooves 541 at both ends of the lower part of the Z-moving plate 54. The movement of the Z-drive block 52 drives the Z-moving plate 54 to slide up and down in a small range in the vertical direction, providing vertical displacement operation for the gripper 9.
[0020] For detailed instructions on the X electric slide table 6 and the Y electric slide table 7, please refer to the appendix. Figure 1 , 5 6: The X-electric slide table 6 includes an X-fixed plate 61 and an X-screw motor 62. The X-fixed plate 61 is fixedly installed on the upper part of the Z-moving plate 54. A cross ball bearing guide four is installed on the X-fixed plate 61, and the X-fixed plate 61 is slidably connected to the X-moving plate 63 through the cross ball bearing guide four. The X-screw motor 62 is fixed on one side of the X-fixed plate 61, and the output end of the X-screw motor 62 is connected to the X-moving plate 63 through a ball screw. The Y-axis electric slide 7 includes a Y-axis moving block 71 and a Y-axis lead screw motor 72. A cross ball bearing guide five is installed on the X-axis moving plate 63, and the X-axis moving plate 63 is slidably connected to the Y-axis moving block 71 through the cross ball bearing guide five. The Y-axis lead screw motor 72 is fixedly installed on one side of the X-axis moving plate 63, and the output end of the Y-axis lead screw motor 72 is connected to the Y-axis moving block 71 through a ball bearing screw. The upper surface of the Y-axis moving block 71 is fixedly connected to the bottom of the gripper base 8. In addition, the sliding direction of the X-axis moving plate 63 and the sliding direction of the Y-axis moving block 71 are perpendicular to each other. During operation, the output end of the X-screw motor 62 drives the X-moving plate 63 to slide along the cross ball guide rail 4 on the X-fixed plate 61; the output end of the Y-screw motor 72 drives the Y-moving block 71 to slide along the cross ball guide rail 5 on the X-moving plate 63, providing displacement operation in the X and Y directions for the gripper fixture 9.
[0021] For detailed instructions on product adsorption column 2, please refer to the appendix. Figure 1 , 9 -13: The product adsorption column 2 includes a copper column 21, an adsorption block clamp 22, a product adsorption block 23, and a locking nut 24. A through hole 211 is formed in the middle of the outer wall of the copper column 21. An air hole 212 communicating with the through hole 211 is formed along the axis at the upper end of the copper column 21. A threaded platform 215 and a positioning post 213 are integrally formed on the upper part of the copper column 21. The positioning post 213 is located above the threaded platform 215, and a slot 214 is formed at the upper end of the positioning post 213. The product adsorption block 23 has a columnar structure, with a locking block 231 integrally formed in the middle of its outer wall. An air hole 23 is formed through the product adsorption block 23 along the axial direction. 2. The lower end of the product adsorption block 23 is inserted into the positioning post 213 of the copper post 21, and the locking block 231 of the product adsorption block 23 is locked in the slot 214; the adsorption block clamp 22 passes through the outer wall of the positioning post 213, the upper end of the adsorption block clamp 22 passes through the product adsorption block 23 and presses on the locking block 231, and the protrusion on the lower side wall of the adsorption block clamp 22 is locked with the protrusion on the upper surface of the threaded platform 215 to prevent the adsorption block clamp 22 from rotating; the locking nut 24 passes through the outer wall of the adsorption block clamp 22, and the locking nut 24 is threadedly connected to the threaded platform 215 to realize the positioning and installation of the product adsorption block 23; During operation, the through hole 211 is connected to the negative pressure air source. The workpiece is placed on the upper end of the product adsorption block 23 and adsorbed onto the upper end of the product adsorption block 23 by the negative pressure air source, thereby achieving adsorption and fixation of the workpiece. The workpiece may include optical communication TO46 series, etc.
[0022] For detailed instructions on gripper 9, please refer to the appendix. Figure 1 , 7 8: The gripper 9 includes a cylinder base plate 901. The lower part of the cylinder base plate 901 is fixedly connected to the gripper base 8 via four hexagonal posts. A telescopic cylinder 902 and a rotating fixed plate 903 are fixedly installed on the cylinder base plate 901. A rotating moving plate 904 is rotatably installed on the upper part of the rotating fixed plate 903. The rotating moving plate 904 and the rotating fixed plate 903 have an annular structure. A long through hole 914 is opened at the protruding end of the outer circumference of the rotating moving plate 904. A rotating fixed shaft 905 is slidably arranged in the long through hole 914. A rotating fixed shaft 905 is fixedly installed on the telescopic end of the telescopic cylinder 902. Three gripper pieces 906 are evenly distributed around the circumference of the rotating moving plate 904. One end of the gripper piece 906 is rotatably connected to the connecting fork shaft 907. The connecting fork shaft 907 passes through the rotating moving plate 904 and the rotating fixed plate 903 and is fixedly connected to the cylinder base plate 901. The rotating moving plate 904 has an arc-shaped through hole 908 with the same center as the rotating moving plate 904. The connecting fork shaft 907 passes through the arc-shaped through hole 908. A circular arc through hole 909 is provided in the middle of the gripper plate 906. A rotating fixed shaft 910 is inserted through the circular arc through hole 909, and the lower end of the rotating fixed shaft 910 is fixedly connected to the rotating moving plate 904. The inner ring of the rotating plate 904 is rotatably connected to the rotating fixed plate 903 via the collar 911; the lower part of the gripper piece 906 away from the connecting fork shaft 907 has a positioning groove 912 for holding and restricting the product; a tight-fitting bearing 913 is installed on the connecting fork shaft 907 and is rotatably connected to the gripper piece 906 via the tight-fitting bearing 913. To avoid the platform's center position and improve positioning repeatability, during operation, the cylinder base plate 901 is activated. The telescopic end of the cylinder base plate 901 reciprocates linearly. This telescopic end, via the rotating fixed shaft 905, drives the rotating moving plate 904 to rotate on the rotating fixed plate 903 via the collar 911. The rotation range of the rotating moving plate 904 is the arc angle of the arc-shaped through hole 908, thereby causing the three gripper plates 906 on the rotating moving plate 904, spaced 120° apart, to rotate relative to the central axis of the product adsorption column 2. The effective movement of the gripper plates 906... With a radius of R, the gripper 906 opens and closes. The positioning groove 912 at one end of the gripper 906 engages with the workpiece adsorbed on the upper end of the product adsorption block 23. Through the cooperation of the first arc through hole 908 and the second arc through hole 909, the three gripper 906 can hold different workpieces with different outer diameters, thus achieving the holding and fixing of the workpiece. Therefore, this structure is adaptable to different workpiece outer diameters. The center point of the thrust of the three gripper 906 on the workpiece is on the axis of the product adsorption column 2, ensuring that the workpiece will not rotate or shift during the processing and that the workpiece always remains in the center position.
[0023] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.
Claims
1. A high-precision hollow alignment platform for positioning various round-edge workpieces, comprising a hollow base (1) and a product adsorption column (2), wherein a sliding support plate (3) is fixedly installed on the hollow base (1) and located on both sides of the product adsorption column (2), characterized in that, A slide base (4) is fixedly installed on the slide support plate (3). From bottom to top, Z electric slide (5), X electric slide (6) and Y electric slide (7) are installed on the upper part of the slide base (4). The upper part of the Y electric slide table (7) is fixedly installed with a gripper base (8), and a gripper clamp (9) is installed on the upper part of the gripper base (8). The gripper clamp (9) is used to fit and hold the product. The outer wall of the product adsorption column (2) is mounted on the hollow base (1) via a flange. The product adsorption column (2) is used to adsorb products. The product adsorption column (2) passes through the hollow base (1), the slide base (4), the Z electric slide (5), the X electric slide (6), the Y electric slide (7) and the hollow hole on the gripper (9) from bottom to top. The axis of the product adsorption column (2) coincides with the clamping axis of the gripper (9).
2. The high-precision hollow alignment platform for positioning various round-edge workpieces according to claim 1, characterized in that, The gripper fixture (9) includes a cylinder base plate (901). The lower part of the cylinder base plate (901) is fixedly connected to the gripper base (8) through four hexagonal columns. A telescopic cylinder (902) and a rotating fixed plate (903) are fixedly installed on the cylinder base plate (901). A rotating moving plate (904) is rotatably installed on the upper part of the rotating fixed plate (903). The rotating moving plate (904) and the rotating fixed plate (903) are annular structures. A long through hole (914) is opened at the protruding end of the outer circumference of the rotating moving plate (904). A rotating fixed shaft (905) is slidably arranged in the long through hole (914). A rotating fixed shaft (905) is fixedly installed on the telescopic end of the telescopic cylinder (902). Three gripper pieces (906) are evenly distributed around the circumference of the rotating moving plate (904). One end of the gripper piece (906) is rotatably connected to the connecting fork shaft (907). The connecting fork shaft (907) passes through the rotating moving plate (904) and the rotating fixed plate (903) and is fixedly connected to the cylinder base plate (901). The rotating moving plate (904) has an arc-shaped through hole (908) with the same center as the rotating moving plate (904). The connecting fork shaft (907) passes through the arc-shaped through hole (908). A circular arc through hole (909) is provided in the middle of the gripper plate (906), and a rotating fixed shaft (910) is provided inside the circular arc through hole (909), and the lower end of the rotating fixed shaft (910) is fixedly connected to the rotating moving plate (904).
3. A high-precision hollow alignment platform for positioning various round-edge workpieces according to claim 2, characterized in that, The inner ring of the rotating moving plate (904) is rotatably connected to the rotating fixed plate (903) through the collar (911); the lower part of the gripper piece (906) away from the connecting fork shaft (907) is provided with a positioning groove (912) for holding and restricting the product; a tight-fit bearing (913) is installed on the connecting fork shaft (907) and is rotatably connected to the gripper piece (906) through the tight-fit bearing (913).
4. A high-precision hollow alignment platform for positioning various round-edge workpieces according to claim 2, characterized in that, The Z-electric slide table (5) includes two L-shaped fixed plates (51) symmetrically fixed on the slide table base (4) and a Z-drive block (52). A cross ball bearing guide is fixedly installed on the L-shaped fixed plate (51). The Z-drive block (52) is slidably installed on the L-shaped fixed plate (51) through the cross ball bearing guide. The two Z-drive blocks (52) are connected as one unit through the back plate (55). The upper surface of the Z-drive block (52) is a sloping structure. One end of the Z-drive block (52) in the sliding direction is connected to the output end of the Z-screw motor (53) through a ball screw. The upper part of the drive block (52) is slidably connected to the Z-moving plate (54). The lower ends of the Z-moving plate (54) are respectively provided with inclined slide grooves (541) adapted to the upper surface of the Z drive block (52). Cross ball guide rails are fixedly installed on both sides of the bottom of the inclined slide groove (541). The Z drive block (52) is slidably connected to the inclined slide groove (541) through the cross ball guide rails. At the same time, the inner side of the vertical end of the L-shaped fixed plate (51) is vertically installed with cross ball guide rails. One side of the Z drive plate (54) is vertically slidably connected to the L-shaped fixed plate (51) through the cross ball guide rails.
5. A high-precision hollow alignment platform for positioning various round-edge workpieces according to claim 4, characterized in that, The X electric slide (6) includes an X fixed plate (61) and an X lead screw motor (62). The X fixed plate (61) is fixedly installed on the upper part of the Z moving plate (54). A cross ball guide four is installed on the X fixed plate (61). The X fixed plate (61) is slidably connected to the X moving plate (63) through the cross ball guide four. The X lead screw motor (62) is fixed on one side of the X fixed plate (61). The output end of the X lead screw motor (62) is connected to the X moving plate (63).
6. A high-precision hollow alignment platform for positioning various round-edge workpieces according to claim 5, characterized in that, The Y-electric slide (7) includes a Y-moving block (71) and a Y-screw motor (72). A cross ball bearing guide five is installed on the X-moving plate (63). The X-moving plate (63) is slidably connected to the Y-moving block (71) through the cross ball bearing guide five. The Y-screw motor (72) is fixedly installed on one side of the X-moving plate (63). The output end of the Y-screw motor (72) is connected to the Y-moving block (71). The upper surface of the Y-moving block (71) is fixedly connected to the bottom of the gripper base (8). Furthermore, the sliding direction of the X-moving plate (63) and the sliding direction of the Y-moving block (71) are perpendicular to each other.
7. A high-precision hollow alignment platform for positioning various round-edge workpieces according to claim 1, characterized in that, The product adsorption column (2) includes a copper column (21), an adsorption block clamp (22), a product adsorption block (23), and a locking nut (24). A through hole (211) is provided in the middle of the outer wall of the copper column (21). An air hole (212) communicating with the through hole (211) is provided at the upper end of the copper column (21) along the axis. A threaded platform (215) and a positioning post (213) are integrally formed on the upper part of the copper column (21). The positioning post (213) is located on the upper part of the threaded platform (215), and a slot (214) is provided at the upper end of the positioning post (213). The product adsorption block (23) has a columnar structure, and a locking block (231) is integrally formed in the middle of its outer wall. An air hole (212) is provided through the product adsorption block (23) along the axial direction. 32) The lower end of the product adsorption block (23) is inserted into the positioning post (213) of the copper post (21), and the locking block (231) of the product adsorption block (23) is locked in the slot (214); the adsorption block clamp (22) is inserted through the outer wall of the positioning post (213), the upper end of the adsorption block clamp (22) passes through the product adsorption block (23) and presses on the locking block (231), the protrusion on the lower side wall of the adsorption block clamp (22) is locked with the protrusion on the upper surface of the threaded platform (215) to prevent the adsorption block clamp (22) from rotating; the locking nut (24) is inserted through the outer wall of the adsorption block clamp (22), and the locking nut (24) is threadedly connected to the threaded platform (215) to realize the positioning and installation of the product adsorption block (23).