Triangular beam working surface high-precision grinding machine tool
By designing a high-precision grinding machine tool, utilizing low-friction transmission with air-bearing guides and ball screws, combined with negative pressure adsorption and mechanical clamping, the problem of inconsistent machining accuracy of the triangular beam working surface was solved, achieving efficient automated machining and meeting the needs of large-scale production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGDAO QIANSHAO PRECISION INSTR
- Filing Date
- 2025-08-12
- Publication Date
- 2026-07-24
AI Technical Summary
In existing technologies, the machining accuracy of the working surface of triangular beams is inconsistent, the efficiency of manual machining is low, it is difficult to meet the needs of large-scale production, and the large error of manual operation cannot guarantee high precision requirements.
This high-precision grinding machine tool is composed of components such as a granite base, clamping assembly, transverse and longitudinal transmission mechanisms, air-bearing guide rails, air-bearing blocks, and ball screws. It achieves automated grinding by combining the low-friction transmission of air-bearing guide rails and ball screws. The workpiece is fixed by negative pressure adsorption and mechanical clamping, and the levelness of the base is adjusted by adjustable jacks and spherical pads to ensure machining accuracy.
It improves the machining accuracy and efficiency of the triangular beam working surface, reduces manual intervention, ensures the consistency of machining quality and the stability of the equipment, meets the needs of large-scale production, and extends the service life of the equipment.
Smart Images
Figure CN224544097U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of grinding machine tool technology, specifically to a high-precision grinding machine tool for a triangular beam working surface. Background Technology
[0002] With the continuous development of industrial technology, the demand for triangular beams in various fields is increasing, and the requirements for their precision are also constantly improving. As a key component, the precision of the working surface of the triangular beam directly affects the overall performance and operational stability of related equipment. Therefore, achieving high-precision machining of the working surface of the triangular beam has become an important requirement for industry development.
[0003] Currently, in the field of triangular beam machining, the grinding and precision inspection of its working surface mostly rely on manual methods. However, manual processing requires a large investment of manpower and has low processing efficiency, making it difficult to meet the needs of large-scale production. Furthermore, the precision of manual grinding is greatly affected by the operator, making it difficult to guarantee the consistency of product quality and to consistently meet the machining requirements of high-precision triangular beams.
[0004] Therefore, this utility model proposes a high-precision grinding machine tool for the working surface of a triangular beam to solve the above-mentioned problems. Summary of the Invention
[0005] The purpose of this invention is to provide a high-precision grinding machine tool for the working surface of triangular beams, which solves the problem in the prior art that the consistency of high-precision triangular beam processing cannot be guaranteed.
[0006] The technical solution adopted by this utility model to solve its technical problem is: A high-precision grinding machine tool for triangular beam working surfaces includes a granite base, on which a clamping assembly is mounted. Multiple negative pressure adsorption holes are arranged on the periphery of the granite base corresponding to the clamping assembly. A transverse transmission mechanism is connected to the granite base, and a longitudinal transmission mechanism is connected to the transverse transmission mechanism via a gantry frame. A grinding tool is connected to the longitudinal transmission mechanism. The transverse transmission mechanism includes a first ball screw, a first air-bearing guide rail, and a first air-bearing block. The first air-bearing block is slidably connected to the first air-bearing guide rail, and the first ball screw passes through and is threadedly connected to the first air-bearing block. The first ball screw is coaxially connected to a first drive motor. The first drive motor is fixedly connected to the granite base, and the gantry frame is connected to the first air-bearing block; the longitudinal transmission mechanism includes a second ball screw, a second air-bearing guide rail, and a second air-bearing block, the second air-bearing block being slidably connected to the second air-bearing guide rail, the second ball screw passing through the second air-bearing block and threadedly connected to it, the second ball screw being coaxially connected to the second drive motor, the second drive motor being fixedly connected to the gantry frame, the grinding tool being connected to the second air-bearing block via a connecting frame, and a third drive motor coaxially connected to the grinding tool being provided on the connecting frame; an adjustable support assembly is provided at the bottom of the granite base.
[0007] Furthermore, the first air flotation block is provided with multiple sets and evenly distributed around the first air flotation guide rail, and the first air flotation block has a strip-shaped air groove on the side facing the first air flotation guide rail, and the strip-shaped air groove extends along the sliding direction of the first air flotation block.
[0008] Furthermore, the adjustable support assembly includes multiple adjustable jacks, which are evenly connected to the bottom of the granite base, and spherical pads are connected between each adjustable jack and the granite base; a level is connected to the granite base.
[0009] Furthermore, the clamping assembly includes a fourth drive motor, a rotating plate, a connecting rod, and a movable clamping plate. The fourth drive motor is disposed inside the granite base. The rotating plate is coaxially connected to the drive shaft of the fourth drive motor. The rotating plate is connected to the movable clamping plate through the connecting rod. The two ends of the connecting rod are respectively hinged to the rotating plate and the movable clamping plate. The movable clamping plate is slidably connected to the granite base.
[0010] Furthermore, a tool holder is connected to the connecting frame, and a quick-change slot is provided on the tool holder. The grinding tool is detachably connected to the quick-change slot by bolts.
[0011] Furthermore, the granite base is provided with a chip groove at its edge, the bottom of the chip groove is inclined, and a chip discharge pipe is connected to the lowest point of the chip groove.
[0012] Furthermore, a telescopic dust cover is fitted on the outer side of the first ball screw. One end of the dust cover is connected to the gantry frame, and the other end is connected to the granite base. The dust cover is a metal corrugated pipe structure. A cable chain is connected to one side of the gantry frame.
[0013] In summary, compared with the prior art, the beneficial effects of this utility model are as follows: The granite base of this invention reduces machine tool vibration and thermal deformation during operation, providing a stable foundation platform for grinding and ensuring consistent machining accuracy. Both the transverse and longitudinal transmission mechanisms utilize air-bearing guides, forming a uniform air film support through strip-shaped air grooves. This avoids frictional resistance and improves positional accuracy during grinding. A third drive motor drives the grinding tool, enabling automated grinding of the triangular beam working surface, reducing manual intervention, significantly improving processing efficiency, meeting the needs of large-scale production, avoiding errors from manual operation, and ensuring consistent quality.
[0014] The adjustable jack at the bottom of this invention, in conjunction with a spherical pad, can precisely adjust the levelness of the base according to the actual installation environment, compensate for the impact of uneven ground on machining accuracy, and further improve the machining accuracy of the machine tool.
[0015] The quick-change slot of the tool holder of this utility model enables grinding tools to be replaced and tightened in a short time, reducing downtime and improving equipment utilization.
[0016] The clamping assembly of this utility model achieves synchronous clamping of the movable clamping plate through the linkage mechanism driven by the fourth drive motor. Combined with the adsorption force of the negative pressure adsorption hole, it achieves rapid fixation of the workpiece and shortens the clamping time.
[0017] The telescopic dust cover with metal corrugated pipe structure of this utility model can effectively prevent grinding chips from entering the first ball screw and extend the service life of the transverse transmission mechanism; the inclined chip groove and chip discharge pipe design ensure that chips are discharged in time, avoiding accumulation that affects the processing accuracy and equipment operation stability. Attached Figure Description
[0018] Figure 1 This is a three-dimensional illustration of the present invention. Figure 1 ; Figure 2 This is a three-dimensional illustration of the present invention. Figure 2 ; Figure 3 This is a top view of the present invention; Figure 4 This is a partial cross-sectional schematic diagram of the top view of this utility model; Figure 5 This is the front view of the present invention; Figure 6This is a partial cross-sectional view of the main view of this utility model; In the diagram: 1. Granite base; 2. Negative pressure adsorption hole; 3. Fourth drive motor; 4. Rotating plate; 5. Connecting rod; 6. Movable clamping plate; 7. Gantry frame; 8. Grinding tool; 9. Tool holder; 10. First ball screw; 11. First air-bearing guide rail; 12. First air-bearing block; 13. First drive motor; 14. Telescopic dust cover; 15. Cable chain; 16. Second ball screw; 17. Second air-bearing guide rail; 18. Second air-bearing block; 19. Second drive motor; 20. Connecting frame; 21. Third drive motor; 22. Adjustable jack; 23. Spherical pad; 24. Level; 25. Chip trough; 26. Chip discharge pipe. Detailed Implementation
[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0020] In this application, the terms "upper," "inner," "outer," "middle," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.
[0021] like Figure 1-6 As shown, a high-precision grinding machine tool for a triangular beam working surface includes a granite base 1, on which a clamping assembly is provided. Multiple negative pressure adsorption holes 2 are provided on the granite base 1 corresponding to the periphery of the clamping assembly. The clamping assembly includes a fourth drive motor 3, a rotating plate 4, a connecting rod 5, and a movable clamping plate 6. The fourth drive motor 3 is located inside the granite base 1. The rotating plate 4 is coaxially connected to the drive shaft of the fourth drive motor 3. The rotating plate 4 is connected to the movable clamping plate 6 via the connecting rod 5. The two ends of the connecting rod 5 are hinged to the rotating plate 4 and the movable clamping plate 6 respectively. The movable clamping plate 6 is slidably connected to the granite base 1.
[0022] Furthermore, a transverse transmission mechanism is connected to the granite base 1, and a longitudinal transmission mechanism is connected to the transverse transmission mechanism via a gantry frame 7. A grinding tool 8 is connected to the longitudinal transmission mechanism. A tool holder 9 is connected to the connecting frame 20, and a quick-change slot is provided on the tool holder 9. The grinding tool 8 is detachably connected to the quick-change slot by bolts.
[0023] Furthermore, the transverse transmission mechanism includes a first ball screw 10, a first air bearing guide rail 11, and a first air bearing block 12. The first air bearing block 12 is slidably connected to the first air bearing guide rail 11. The first ball screw 10 passes through the first air bearing block 12 and is threadedly connected to it. The first ball screw 10 is coaxially connected to a first drive motor 13, which is fixedly connected to the granite base 1. A gantry frame 7 is connected to the first air bearing block 12. The first air bearing block 12 has multiple sets evenly distributed around the first air bearing guide rail 11. A strip-shaped air groove is opened on the side of the first air bearing block 12 facing the first air bearing guide rail 11, and the strip-shaped air groove extends along the sliding direction of the first air bearing block 12. A telescopic dust cover 14 is fitted on the outer side of the first ball screw 10. One end of the dust cover is connected to the gantry frame 7, and the other end is connected to the granite base 1. The dust cover is a metal corrugated pipe structure. A drag chain 15 is connected to one side of the gantry frame 7.
[0024] Furthermore, the longitudinal transmission mechanism includes a second ball screw 16, a second air-bearing guide rail 17, and a second air-bearing block 18. The second air-bearing block 18 is slidably connected to the second air-bearing guide rail 17. The second ball screw 16 passes through the second air-bearing block 18 and is threadedly connected to it. The second ball screw 16 is coaxially connected to the second drive motor 19. The second drive motor 19 is fixedly connected to the gantry frame 7. The grinding tool 8 is connected to the second air-bearing block 18 through a connecting frame 20. A third drive motor 21 coaxially connected to the grinding tool 8 is provided on the connecting frame 20. Furthermore, the granite base 1 has an adjustable support assembly at its bottom; the adjustable support assembly includes multiple adjustable jacks 22, which are evenly connected to the bottom of the granite base 1, and each adjustable jack 22 is connected to the granite base 1 with a spherical pad 23; a level 24 is connected to the granite base 1. The edge of the granite base 1 has a chip groove 25, the bottom of which is inclined, and a chip discharge pipe 26 is connected to the lowest point of the chip groove 25.
[0025] The working process of this utility model is as follows: First, the basic accuracy of the machine tool is calibrated. The operator observes the level 24 on the base and adjusts the height of the evenly distributed adjustable jacks 22. The spherical pads 23 between the adjustable jacks 22 and the granite base 1 are used to accommodate small angular deviations, ensuring that the granite base 1 is in a horizontal state, providing a stable foundation for subsequent high-precision grinding. Then, the triangular beam to be processed is placed in the corresponding position of the clamping assembly on the granite base 1. The fourth drive motor 3 is then started. The drive shaft of the fourth drive motor 3 drives the rotating plate 4 to rotate. The two ends of the connecting rod 5 are respectively hinged to the rotating plate 4 and the movable clamping plate 6. When the rotating plate 4 rotates, it pushes the movable clamping plate 6 to slide along the granite base 1 through the connecting rod 5. The movable clamping plate 6 works together to clamp the triangular beam. At the same time, the negative pressure adsorption holes 2 on the periphery of the corresponding clamping assembly on the granite base 1 are opened. The triangular beam is further adsorbed and fixed by negative pressure. Combined with mechanical clamping, double fixation is achieved to prevent the workpiece from loosening during grinding and to ensure processing stability. The negative pressure adsorption hole 2 is equipped with a filtration system and a reverse blowing device to prevent the negative pressure adsorption hole 2 from becoming clogged.
[0026] The grinding tool 8 can be changed according to the grinding requirements of the triangular beam working surface. First, the grinding tool 8 is placed in the quick-change slot of the tool holder 9 and quickly fixed with bolts. Then, the third drive motor 21 is coaxially connected to the grinding tool 8 to provide power for the tool rotation. Then, the third drive motor 21 starts, driving the grinding tool 8 to rotate at high speed, enabling grinding. Then, it moves laterally. The first drive motor 13 starts, driving the first ball screw 10 to rotate. The first air float 12 is threadedly connected to the first ball screw 10. The first air float 12 forms an air film with the first air float guide rail 11 through the strip air groove. The first air float 12 slides along the first air float guide rail 11, thereby driving the gantry 7 to move laterally and adjusting the lateral processing position of the grinding tool 8. At the same time, the telescopic dust cover 14 on the outside of the first ball screw 10 moves and extends with the movement of the gantry 7 to prevent debris from entering. The drag chain 15 on one side of the gantry 7 moves synchronously to protect the cable from being pulled. Then, it moves longitudinally. The second drive motor 19 starts, driving the second ball screw 16 to rotate. The second air float 18 is threadedly connected to the second ball screw 16 and slides along the second air float guide rail 17. It can reduce friction through the air film, and then drive the grinding tool 8 to move longitudinally through the connecting frame 20, adjusting the longitudinal machining position of the grinding tool 8. Then, through the precise control of the transverse and longitudinal transmission mechanism, combined with the low friction characteristics of the air float guide rail and the high precision transmission of the ball screw, the grinding tool 8 can perform high-precision grinding on the working surface of the triangular beam according to the preset trajectory. The chips generated during the grinding process fall into the chip groove 25 on the edge of the granite base 1. The bottom of the chip groove 25 is designed with an inclination. The chips slide to the lowest point under the action of gravity and are finally discharged through the chip discharge pipe 26 connected at the lowest point, keeping the working area clean. The entire working process realizes high-precision grinding of the working surface of the triangular beam.
Claims
1. A high-precision grinding machine tool for the working surface of a triangular beam, comprising a granite base (1), characterized in that, A clamping assembly is provided on the granite base (1), and a plurality of negative pressure adsorption holes (2) are provided on the granite base (1) corresponding to the periphery of the clamping assembly; a transverse transmission mechanism is connected to the granite base (1), and a longitudinal transmission mechanism is connected to the transverse transmission mechanism through a gantry frame (7), and a grinding tool (8) is connected to the longitudinal transmission mechanism. The transverse transmission mechanism includes a first ball screw (10), a first air-bearing guide rail (11), and a first air-bearing block (12). The first air-bearing block (12) is slidably connected to the first air-bearing guide rail (11). The first ball screw (10) passes through the first air-bearing block (12) and is threadedly connected to it. The first ball screw (10) is coaxially connected to the first drive motor (13). The first drive motor (13) is fixedly connected to the granite base (1). The gantry frame (7) is connected to the first air-bearing block (12). The longitudinal transmission mechanism includes a second ball screw (16), a second air-bearing guide rail (17), and a second air-bearing block (18). The second air-bearing block (18) is slidably connected to the second air-bearing guide rail (17). The second ball screw (16) passes through the second air-bearing block (18) and is threadedly connected to it. The second ball screw (16) is coaxially connected to the second drive motor (19). The second drive motor (19) is fixedly connected to the gantry frame (7). The grinding tool (8) is connected to the second air-bearing block (18) through a connecting frame (20). A third drive motor (21) coaxially connected to the grinding tool (8) is provided on the connecting frame (20). An adjustable support assembly is provided at the bottom of the granite base (1).
2. The high-precision grinding machine tool for the working surface of a triangular beam according to claim 1, characterized in that, The first air flotation block (12) is provided with multiple sets and evenly distributed around the first air flotation guide rail (11). The first air flotation block (12) has a strip-shaped air groove on the side facing the first air flotation guide rail (11), and the strip-shaped air groove extends along the sliding direction of the first air flotation block (12).
3. The high-precision grinding machine tool for the working surface of a triangular beam according to claim 1, characterized in that, The adjustable support assembly includes multiple adjustable jacks (22), which are evenly connected to the bottom of the granite base (1). A spherical pad (23) is connected between each of the adjustable jacks (22) and the granite base (1). A level (24) is connected to the granite base (1).
4. A high-precision grinding machine tool for the working surface of a triangular beam according to claim 1, characterized in that, The clamping assembly includes a fourth drive motor (3), a rotating plate (4), a connecting rod (5), and a movable clamping plate (6). The fourth drive motor (3) is disposed inside the granite base (1). The rotating plate (4) is coaxially connected to the drive shaft of the fourth drive motor (3). The rotating plate (4) is connected to the movable clamping plate (6) through the connecting rod (5). The two ends of the connecting rod (5) are respectively hinged to the rotating plate (4) and the movable clamping plate (6). The movable clamping plate (6) is slidably connected to the granite base (1).
5. A high-precision grinding machine tool for the working surface of a triangular beam according to claim 1, characterized in that, The connecting frame (20) is connected to a tool holder (9), and the tool holder (9) is provided with a quick-change slot. The grinding tool (8) is detachably connected to the quick-change slot by bolts.
6. A high-precision grinding machine tool for the working surface of a triangular beam according to claim 1, characterized in that, The granite base (1) has a chip groove (25) on its edge. The bottom of the chip groove (25) is inclined. A chip discharge pipe (26) is connected to the lowest point of the chip groove (25).
7. A high-precision grinding machine tool for the working surface of a triangular beam according to claim 1, characterized in that, The first ball screw (10) is fitted with a telescopic dust cover (14) on its outer side. One end of the dust cover is connected to the gantry frame (7) and the other end is connected to the granite base (1). The dust cover is a metal corrugated pipe structure. A drag chain (15) is connected to one side of the gantry frame (7).