Five-axis gantry machining center for mechanical manufacturing
By designing a positioning mechanism with a motor-driven bidirectional screw and slider structure on a gantry machining center, the problem of workpiece offset during machining is solved, achieving stable clamping and simplified installation, thus improving the convenience and accuracy of machining.
Patent Information
- Application Number
- CN202511155459.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-18
- Publication Date
- 2025-11-28
AI Technical Summary
Existing gantry machining centers are prone to workpiece displacement during processing due to the lack of effective clamping devices, resulting in cumbersome installation and use and inconvenient storage.
A positioning mechanism including a motor-driven bidirectional screw and a slider structure was designed. The motor drives the bidirectional screw to rotate, and the slider moves under the action of the thread to realize the approach and clamping of the clamping plate, which works in conjunction with the limiting top plate to achieve stable clamping.
It achieves stable clamping of the workpiece, avoids displacement during processing, simplifies the installation process, and improves the convenience and accuracy of processing.
Smart Images
Figure CN121018191A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of gantry machining center technology, and in particular to a five-axis gantry machining center for mechanical manufacturing. Background Technology
[0002] A gantry machining center is a CNC machine tool with its spindle axis perpendicular to the worktable. It adopts a portal frame structure consisting of double columns and a top beam, and features high rigidity and a large stroke. However, existing gantry machining centers have at least the following drawbacks during use: they often lack clamping, and the workpiece on the machining table is prone to shifting during processing. Currently, most gantry machining centers rely on external auxiliary parts for clamping, which is cumbersome to install and use, and also inconvenient to store. Therefore, we introduce a five-axis gantry machining center for mechanical manufacturing. Summary of the Invention
[0003] The main objective of this invention is to provide a five-axis gantry machining center for mechanical manufacturing, which can effectively solve the problems in the background art.
[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A five-axis gantry machining center for mechanical manufacturing includes a base, a support frame fixedly connected to the upper rear of the base, a transverse drive mechanism mounted to the front of the support frame, a transverse movable frame movably connected to the transverse drive mechanism, a longitudinal drive mechanism mounted to the front of the transverse movable frame, a working end movably connected to the longitudinal drive mechanism, a translation drive mechanism mounted to the middle of the upper part of the base, a machining table movably connected to the translation drive mechanism, the machining table being located below the support frame, and a positioning mechanism fixedly connected to the right end of the machining table.
[0005] Preferably, the positioning mechanism includes a motor, the output end of which is fixedly connected to a bidirectional screw, and both the left and right sides of the outer surface of the bidirectional screw are threadedly connected to sliders. Both sliders are "T" shaped structures, and the upper rear ends of both sliders are movably connected to connecting shafts via bearings. Both connecting shafts are fixedly connected to clamping plates at their rear ends, and the ends of the two clamping plates that are far apart from each other are movably connected to limit plates.
[0006] Preferably, the lower ends of both clamping plates are curved surfaces.
[0007] Preferably, each of the two clamping plates has a slot at the ends that are far apart from each other, and each of the two limiting top plates has a connecting block fixedly connected at the ends that are close to each other.
[0008] Preferably, both limiting top plates are T-shaped structures.
[0009] Preferably, the upper end of the processing table has a groove in the middle.
[0010] Preferably, the motor is fixedly connected to the right end of the processing table, the bidirectional screw is movably connected to the processing table through a bearing, both sliders are located inside the processing table, the connecting shaft extends out of the processing table, and both clamping plates are located in the groove.
[0011] The present invention has the following beneficial effects: 1. In this invention, by opening a groove on the processing table, when the two clamping plates are not in use, the angle of the two clamping plates can be adjusted by moving them, so that the two clamping plates retract into the groove and the height of the two clamping plates is lower than the upper end of the processing table, thereby avoiding affecting the normal use of the processing table; 2. In this invention, by setting a positioning mechanism, when workpiece clamping is required, the motor is started to work, causing the motor to drive the bidirectional screw to rotate. The two sliders connected by threads on the bidirectional screw move closer to each other under the action of rotation, thereby driving the two clamping plates to move closer to each other. Then, the angle of the two clamping plates is adjusted so that they are in a vertical state to clamp the workpiece. Then, the two limiting top plates are interleaved and movably connected to the two clamping plates. After the two limiting top plates contact the processing table, they can limit the clamping plates and prevent the clamping plates from swinging during the clamping process. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the overall structure of a five-axis gantry machining center for mechanical manufacturing according to the present invention; Figure 2 This is a schematic diagram of the overall structure of the positioning mechanism of a five-axis gantry machining center for mechanical manufacturing according to the present invention; Figure 3 This is a schematic diagram of the overall structure of the limiting top plate of a five-axis gantry machining center for mechanical manufacturing according to the present invention; Figure 4 This is a schematic diagram of the cross-sectional structure of the machining table of a five-axis gantry machining center for mechanical manufacturing according to the present invention.
[0013] In the diagram: 1. Base; 2. Support frame; 3. Horizontal movable frame; 4. Longitudinal drive mechanism; 5. Lateral drive mechanism; 6. Working end; 7. Processing table; 8. Translation drive mechanism; 9. Positioning mechanism; 71. Groove; 91. Motor; 92. Limiting top plate; 93. Clamping plate; 94. Bidirectional screw; 95. Connecting shaft; 96. Slider; 921. Connecting block; 931. Slot. Detailed Implementation
[0014] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.
[0015] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0016] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0017] Please see Figure 1-4 The present invention provides a technical solution: A five-axis gantry machining center for mechanical manufacturing includes a base 1, a support frame 2 fixedly connected to the upper rear of the base 1, a transverse drive mechanism 5 mounted and connected to the front end of the support frame 2, a transverse movable frame 3 movably connected to the transverse drive mechanism 5, a longitudinal drive mechanism 4 mounted and connected to the front end of the transverse movable frame 3, a working end 6 movably connected to the longitudinal drive mechanism 4, a translation drive mechanism 8 mounted and connected to the upper middle of the base 1, a machining table 7 movably connected to the translation drive mechanism 8, the machining table 7 being located below the support frame 2, and a positioning mechanism 9 fixedly connected to the right end of the machining table 7.
[0018] In this embodiment, the positioning mechanism 9 includes a motor 91. A bidirectional screw 94 is fixedly connected to the output end of the motor 91. A slider 96 is threadedly connected to the left and right sides of the outer surface of the bidirectional screw 94. Both sliders 96 are "T" shaped. A connecting shaft 95 is movably connected to the upper rear end of each slider 96 via a bearing. A clamping plate 93 is fixedly connected to the rear end of each connecting shaft 95. A limiting top plate 92 is movably connected to the ends of the two clamping plates 93 that are far apart from each other. The lower ends of the two clamping plates 93 are arc-shaped. A slot 931 is opened at the ends of the two clamping plates 93 that are far apart from each other. A connecting block 921 is fixedly connected to the ends of the two limiting top plates 92 that are close to each other. Both limiting top plates 92 are "T" shaped.
[0019] In this embodiment, a groove 71 is provided in the middle of the upper end of the processing table 7; the motor 91 is fixedly connected to the right end of the processing table 7; the bidirectional screw 94 is movably connected to the processing table 7 through a bearing; both sliders 96 are located inside the processing table 7; the connecting shaft 95 extends out of the processing table 7; and both clamping plates 93 are located inside the groove 71.
[0020] It should be noted that this invention describes a five-axis gantry machining center for mechanical manufacturing. In the context of precision machining operations, to diversify the functions of the machining table 7 and improve the convenience and stability of workpiece clamping, a groove 71 is carefully provided on the machining table 7. When the two clamping plates 93 are idle, the operator can easily manually move them. During the movement, the angle of the two clamping plates 93 can be smoothly adjusted. As the angle changes, the two clamping plates 93 gradually retract into the groove 71. Moreover, the height of the two clamping plates 93 after retraction is strictly lower than that of the machining table 7. The height of the upper part, when the clamping plate 93 is retracted, will not interfere with the normal use of the processing table 7. Whether placing workpieces, performing simple measurement operations, or carrying out other routine processing procedures, it can be done as smoothly as when the clamping plate 93 is not set. When it is necessary to clamp the workpiece, the motor 91 is started first. The motor 91 is the power source of the entire clamping system. Its performance is stable and reliable, and it can provide precise power output. After the motor 91 starts working, it will drive the bidirectional screw 94 to rotate. The bidirectional screw 94 is a key component of the entire transmission system. Its surface is carefully machined with symmetrical... During the rotation of the double-ended screw 94, the two sliders 96 connected to it by the thread will move relative to each other under the action of the thread. Due to the thread characteristics of the double-ended screw 94, the two sliders 96 will move closer to each other. These two sliders 96 are respectively connected to two clamping plates 93. Therefore, as the sliders 96 move closer to each other, they will synchronously drive the two clamping plates 93 to move closer to each other as well. When the two clamping plates 93 move to the appropriate position, the angle of the two clamping plates 93 can be adjusted manually again. Through precise angle adjustment, the two clamping plates 93 are made to be in a vertical state. At this time, the two clamping plates 93 can fit tightly together. The workpiece is firmly clamped on both sides. To further enhance the stability of the clamping and prevent accidents during processing, two limiting top plates 92 and two clamping plates 93 are then interlocked and connected. The design of the limiting top plates 92 fully considers the cooperation relationship with the clamping plates 93 and the processing table 7. When the two limiting top plates 92 come into contact with the processing table 7, they will effectively limit the clamping plates 93. This limiting mechanism can ensure that the clamping plates 93 will not swing due to external forces or processing vibrations during the clamping process, thereby ensuring the firmness of the workpiece clamping and the accuracy of the processing.
[0021] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.
Claims
1. A five-axis gantry machining center for mechanical manufacturing, comprising a base (1), characterized in that: A support frame (2) is fixedly connected to the upper rear of the base (1). A transverse drive mechanism (5) is installed and connected to the front end of the support frame (2). A transverse movable frame (3) is movably connected to the transverse drive mechanism (5). A longitudinal drive mechanism (4) is installed and connected to the front end of the transverse movable frame (3). A working end (6) is movably connected to the longitudinal drive mechanism (4). A translation drive mechanism (8) is installed and connected to the middle of the upper end of the base (1). A processing table (7) is movably connected to the translation drive mechanism (8). The processing table (7) is located at the lower part of the support frame (2). A positioning mechanism (9) is fixedly connected to the right end of the processing table (7).
2. The five-axis gantry machining center for mechanical manufacturing according to claim 1, characterized in that: The positioning mechanism (9) includes a motor (91), and a bidirectional screw (94) is fixedly connected to the output end of the motor (91). The left and right sides of the outer surface of the bidirectional screw (94) are threaded with sliders (96). Both sliders (96) are "T" shaped structures. The upper rear ends of both sliders (96) are movably connected to connecting shafts (95) through bearings. The rear ends of both connecting shafts (95) are fixedly connected to clamps (93). The ends of the two clamps (93) that are far apart from each other are movably connected to limit plates (92).
3. A five-axis gantry machining center for mechanical manufacturing according to claim 2, characterized in that: Both of the clamps (93) have an arc-shaped structure at their lower ends.
4. A five-axis gantry machining center for mechanical manufacturing according to claim 2, characterized in that: The two clamping plates (93) are each provided with a slot (931) at the ends that are far apart from each other, and the two limiting top plates (92) are each fixedly connected with a connecting block (921) at the ends that are close to each other.
5. A five-axis gantry machining center for mechanical manufacturing according to claim 2, characterized in that: Both of the aforementioned limiting top plates (92) are "T" shaped structures.
6. A five-axis gantry machining center for mechanical manufacturing according to claim 1, characterized in that: The processing table (7) has a groove (71) in the middle of its upper end.
7. A five-axis gantry machining center for mechanical manufacturing according to claim 2, characterized in that: The motor (91) is fixedly connected to the right end of the processing table (7), the bidirectional screw (94) is movably connected to the processing table (7) through a bearing, the two sliders (96) are both located inside the processing table (7), the connecting shaft (95) extends out of the processing table (7), and the two clamping plates (93) are both located inside the groove (71).