High-precision guide rail structure of gantry machining center
By combining the slot insert with the fixing structure of the column side column and the cooperation of the motor electromagnet, the problems of unstable guide rail connection and insufficient slider movement accuracy are solved, thus achieving high precision and stability of the gantry machining center guide rail.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-17
- Publication Date
- 2026-04-14
AI Technical Summary
The existing fixed beam gantry machining center guide rail structure has poor stability during splicing and is prone to detachment, making it difficult to guarantee the accuracy of the slider when moving on the guide rail.
It adopts a slot and plug-in structure, and is fixed by assembly components such as columns and side columns. Combined with motor drive and electromagnet adsorption in the sliding component, it realizes stable connection and high-precision movement of the guide rail.
This improves the connection stability between guide rails, ensures the precise movement and stable fixation of the slider on the guide rails, and enhances machining accuracy.
Smart Images

Figure CN224115619U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of gantry machining centers and their accessories, and in particular relates to a high-precision guide rail structure for gantry machining centers. Background Technology
[0002] A gantry machining center is a large CNC machine tool used for machining large workpieces. It mainly consists of three parts: a crossbeam, a column, and a worktable. The worktable is located below the crossbeam, while the column is installed at both ends of the crossbeam to support it. In the case of a fixed-beam gantry machining center, the worktable is also equipped with guide rails, and the worktable is driven to move on the guide rails under the power support of the drive mechanism.
[0003] Chinese patent application CN220006764U discloses a guide rail structure for a fixed-beam gantry machining center. The structure includes a guide rail body with evenly distributed mounting holes inside, each containing a fixing bolt. A connecting rod is mounted on one side of the guide rail body, and mounting plates are mounted on both sides. A slider is movably mounted on the outer wall of the guide rail body, with an adjustment structure at the top and a mounting block on one side of the adjustment structure. This invention, by incorporating connecting rods, mounting plates, and connecting holes, forms an interlocking structure. When using this guide rail structure, multiple guide rails can be spliced together to achieve the required length according to actual needs, making it simple and convenient. This significantly increases the ease of splicing and improves the overall performance.
[0004] The aforementioned fixed-beam gantry machining center guide rail structure has a connecting rod fixedly installed at one end of the guide rail body, and a mounting hole opened at the other end. Multiple guide rail bodies are connected by inserting the connecting rod and the mounting hole to increase or decrease the overall length of the guide rail body. Because the connecting rod and the mounting hole are assembled by inserting, the stability of the connection between the interconnected guide rail bodies is poor, and it is easy to detach. In addition, a slider is slidably installed on the guide rail body. The slider is used to mount the worktable of the gantry machining center. The slider is pushed on the slide rail by a common push structure (hydraulic rod) to adjust the position of the slider. After the slide rail moves to the fixed position, the slider can only be restrained by the stop action of the push structure to temporarily fix it on the slide rail. In this process, the pressure on the push structure is too large. Over time, this pressure can easily cause the push structure and the slider to loosen and disengage. In addition, using only the push structure to fix the slider on the slide rail can easily cause the slider to move, making the position adjustment between the slide rail and the slider inaccurate. To address these issues, we provide a high-precision guideway structure for gantry machining centers. Utility Model Content
[0005] The purpose of this utility model is to provide a high-precision guide rail structure for a gantry machining center. By using assembly components, the stability of the connection between the guide rail bodies can be improved when the guide rail bodies are connected end to end. By using sliding components, not only can the movement distance of the guide rail body be controlled with high precision, but it can also be stably fixed on the guide rail body when stopped, thus solving the problems of the aforementioned fixed beam type gantry machining center guide rail structure.
[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:
[0007] This utility model relates to a high-precision guide rail structure for a gantry machining center, comprising a guide rail body; one end of the guide rail body is provided with a slot, and the other end of the guide rail body is provided with a plug, the plug and the slot are interlocked, and the plug and the slot are also fixed by an assembly component, the assembly component includes a column vertically inserted between the plug and the slot, and a side column horizontally inserted between the plug and the slot, a sliding component is also slidably disposed on the guide rail body, the sliding component includes a sliding sleeve slidably sleeved on the guide rail body, a driving component is provided on the left side of the sliding sleeve, the driving component includes a motor fixed on the sliding sleeve, and a gear disposed on the end of the motor shaft, a battery is embedded in the right side wall of the sliding sleeve, and an electromagnet is embedded in the bottom inner wall of the sliding sleeve.
[0008] The present invention is further configured such that a vertical hole is provided on the upper end face of the slot and a side hole is provided on the side side of the slot, and a vertical hole is provided on the upper end face of the plug and a side hole is provided on the side side of the plug.
[0009] The present invention is further configured such that the column extends through the first vertical hole into the interior of the second vertical hole, and the side column extends through the first side hole into the interior of the second side hole. The side column is also threadedly connected to the side wall of the column, and the bottom of the column is connected to the bottom side wall of the second vertical hole by a spring.
[0010] The present invention is further configured such that a side groove is provided on the side wall of the guide rail body, and a toothed groove is provided on the inner wall of the side groove, and the gear meshes with the toothed groove on the side wall of the guide rail body.
[0011] The present invention is further configured such that an installation groove is provided at the upper end of the left side wall of the sliding sleeve, and a shaft hole is provided at the center of the installation groove. A frame is fixedly installed in the installation groove, and a bushing is embedded in the shaft hole.
[0012] The present invention is further configured such that the mounting groove is fixedly connected to the motor via a frame, and the shaft hole is rotatably engaged with the rotating rod via a bushing. The rotating rod is connected to the shaft of the motor via a coupling, and a gear is sleeved at the end of the rotating rod.
[0013] The present invention is further configured such that the sliding sleeve has a sliding groove inside, and the sliding sleeve is slidably sleeved with the guide rail body through the sliding groove. An electromagnet is provided on the bottom inner wall of the sliding groove, and the electromagnet is connected to the storage battery through a wire and a switch.
[0014] The present invention is further configured such that a storage groove is provided in the middle of the right side wall of the sliding sleeve, and the battery is installed in the storage groove, and a cover plate is provided on the upper end surface of the storage groove.
[0015] This utility model has the following beneficial effects:
[0016] 1. This utility model sets up a guide rail body and an assembly assembly. The guide rail bodies can be connected end to end through the interlocking of slots and plugs, thereby achieving the effect of extending the guide rail body. Furthermore, each adjacent guide rail body is fixed by the assembly assembly, which includes a column inserted between two guide rail bodies and a side column inserted beside the column. This achieves mutual resistance of forces in two vertical directions, preventing the guide rail bodies from separating.
[0017] 2. This utility model incorporates a sliding component, which includes a sliding sleeve that is slidably fitted onto the guide rail body. The sliding sleeve also has a driving component, comprising a motor and a gear. The motor drives the gear to rotate, and since the gear meshes with the toothed groove on the guide rail body, the sliding sleeve moves along the guide rail body. Due to the meshing connection between the gear and the toothed groove, high-precision control of the sliding sleeve's sliding distance is achieved. Since the sliding sleeve is used for mounting on the worktable of a gantry machining center, its movement along the guide rail body adjusts the worktable's movement progress. When the sliding sleeve stops, the motor rotation is stopped, and simultaneously, the battery powers the electromagnet, causing it to generate strong magnetism. This electromagnet then exerts a strong attraction force on the guide rail body, thus fixing the sliding sleeve to the guide rail body.
[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description
[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of a high-precision guide rail structure for a gantry machining center.
[0021] Figure 2 A structural cross-sectional view of the guide rail body and assembly components;
[0022] Figure 3 This is a schematic diagram of the sliding component.
[0023] Figure 4 This is a structural disassembly diagram of the sliding component.
[0024] The attached diagram lists the components represented by each number as follows:
[0025] 1-Guide rail body, 101-Slot, 101a-Vertical hole one, 101b-Side hole one, 102-Insertion block, 102a-Vertical hole two, 102b-Side hole two, 103-Side groove, 103a-Gear groove, 2-Assembly assembly, 201-Column, 202-Spring, 203-Side column, 3-Sliding assembly, 301-Sliding sleeve, 301a-Sliding groove, 301b-Bottom groove, 301c-Mounting groove, 301d-Shaft hole, 301e-Storage groove, 302-Drive component, 302a-Motor, 302b-Frame, 302c-Rotating rod, 302d-Rod sleeve, 302e-Gear, 303-Electromagnet, 304-Cover plate, 304a-Battery. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0027] Example 1
[0028] Please see Figure 1 and Figure 2 This utility model is a high-precision guide rail structure for a gantry machining center, including a guide rail body 1 and an assembly component 2. By using the assembly component 2, it can be ensured that the connected guide rail bodies 1 will not detach when multiple guide rail bodies 1 are connected end to end.
[0029] Specifically, one end of the guide rail body 1 is provided with a slot 101, and the other end is provided with a plug 102. Different guide rail bodies 1 are connected to each other by plugging the plug 102 into the slot 101. The upper side wall of the slot 101 is provided with a vertical hole 101a, and the middle side wall of the vertical hole 101a is provided with a side hole 101b. The upper side wall of the plug 102 is provided with a vertical hole 202a, and the middle side wall of the vertical hole 202a is provided with a side hole 202b. The assembly component 2 includes a column 201 inserted into the vertical hole 101a and the vertical hole 202a, and a side column 203 inserted into the side hole 101b and the side hole 202b.
[0030] Furthermore, a spring 202 is fixedly installed at the bottom of the column 201, and the bottom of the spring 202 abuts against the bottom inner wall of the first vertical hole 101a. The column 201 extends through the first vertical hole 101a on the slot 101 and into the second vertical hole 102a of the insert block 102. The side column 203 extends through the first side hole 101b and into the side hole 102b of the insert block 102. The side column 203 is threadedly connected to the first side hole 101b and the second side hole 102b, and the side column 203 is also inserted into the column 201.
[0031] The operation process of this embodiment is as follows: When in use, align the insert 102 on the end of one guide rail body 1 with the slot 101 on the other guide rail body 1, and insert the insert 102 into the slot 101. Then, take out the column 201, insert it into the vertical hole 101a, and press the column 201 to compress the spring 202. Then, screw the side column 203 into the side hole 101b. Adjust the position of the screw hole on the side wall of the column 201 by increasing or decreasing the pressure on the column 201 until the side column 203 can be locked into the screw hole on the side wall of the column 201. This completes the assembly between the two guide rail bodies 1.
[0032] Example 2
[0033] Please see Figure 3 and Figure 4 Based on embodiment 1, a sliding component 3 is also provided. By using the driving component 302, the sliding sleeve 301 can be powered to slide on the guide rail body 1. By using the cooperation of the storage battery 304a and the electromagnet 303, the sliding sleeve 301 can be stably fixed on the guide rail body 1 when it stops.
[0034] Specifically, the sliding assembly 3 includes a sliding sleeve 301 sleeved on the guide rail body 1. The sliding sleeve 301 has a sliding groove 301a inside, and a bottom groove 301b is formed on the bottom side wall of the sliding groove 301a. An installation groove 301c is formed in the upper side wall of the left end of the sliding sleeve 301, and a shaft hole 301d is formed at the center of the installation groove 301c. A storage groove 301e is formed in the middle of the right side wall of the sliding sleeve 301. The installation groove 301c is used for the installation of the drive component 302, the storage groove 301e is used for the installation of the battery 304a, and the bottom groove 301b is used for the installation of the electromagnet 303.
[0035] Furthermore, a side groove 103 is provided on the side wall of the guide rail body 1, and a toothed groove 103a is also provided on the inner wall of the side groove 103. The driving component 302 includes a frame 302b fixed in the mounting groove 301c, and a motor 302a fixed in the frame 302b. The shaft of the motor 302a is connected to the rotating rod 302c through a coupling, and a rod sleeve 302d is also sleeved on the outer wall of the rotating rod 302c. The rotating rod 302c is connected to the shaft hole 301d through the rod sleeve 302d. A gear 302e is also sleeved at the end of the rotating rod 302c, and the gear 302e meshes with the toothed groove 103a. A cover plate 304 is provided above the battery 304a and on the storage groove 301e, and the battery 304a is connected to the electromagnet 303 through a switch and wires.
[0036] The operation process of this embodiment is as follows: When in use, the motor 302a of the drive component 302 works, which drives the gear 302e to rotate through the rotating rod 302c. Since the gear 302e meshes with the tooth groove 103a, and the motor 302a is fixed on the sliding sleeve 301, the sliding sleeve 301 slides on the guide rail body 1. The upper end face of the sliding sleeve 301 is used for the installation of the worktable of the gantry machining center. Therefore, the final realization is that the worktable moves on the guide rail body 1. After the sliding sleeve 301 moves to the designated position, the motor 302a stops working. Then, the switch of the storage battery 304a is turned on to supply power to the electromagnet 303. When the electromagnet 303 is energized, it will generate strong magnetism. Then, the electromagnet 303 will generate a strong attraction force on the metal guide rail body 1, thereby achieving the effect of fixing the sliding sleeve 301 on the guide rail body 1.
[0037] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0038] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A high-precision guide rail structure for a gantry machining center, comprising a guide rail body (1); characterized in that: One end of the guide rail body (1) is provided with a slot (101), and the other end of the guide rail body (1) is provided with a plug (102). The plug (102) is inserted into the slot (101), and the plug (102) and the slot (101) are also fixed together by an assembly assembly (2). The assembly assembly (2) includes a vertical post (201) inserted between the plug (102) and the slot (101), and a horizontal side post (203) inserted between the plug (102) and the slot (101). A sliding assembly (3) is also slidably provided on the upper part. The sliding assembly (3) includes a sliding sleeve (301) that is slidably sleeved on the guide rail body (1). A driving component (302) is provided on the left side of the sliding sleeve (301). The driving component (302) includes a motor (302a) fixed on the sliding sleeve (301) and a gear (302e) provided on the shaft end of the motor (302a). A storage battery (304a) is embedded in the right side wall of the sliding sleeve (301), and an electromagnet (303) is embedded in the bottom inner wall of the sliding sleeve (301).
2. The high-precision guide rail structure for a gantry machining center according to claim 1, characterized in that, The upper end face of the slot (101) is provided with a vertical hole (101a) and the side face of the slot (101) is provided with a side hole (101b). The upper end face of the plug (102) is provided with a vertical hole (102a) and the side face of the plug (102) is provided with a side hole (102b).
3. The high-precision guide rail structure for a gantry machining center according to claim 1, characterized in that, The column (201) extends through the first vertical hole (101a) into the interior of the second vertical hole (102a), and the side column (203) extends through the first side hole (101b) into the interior of the second side hole (102b). The side column (203) is also threadedly connected to the side wall of the column (201), and the bottom of the column (201) is connected to the bottom side wall of the second vertical hole (102a) by a spring (202).
4. The high-precision guide rail structure for a gantry machining center according to claim 1, characterized in that, The guide rail body (1) has a side groove (103) on its side wall, and a toothed groove (103a) is provided on the inner wall of the side groove (103). The gear (302e) meshes with the toothed groove (103a) on the side wall of the guide rail body (1).
5. The high-precision guide rail structure for a gantry machining center according to claim 1, characterized in that, The upper end of the left side wall of the sliding sleeve (301) is provided with a mounting groove (301c), and a shaft hole (301d) is provided at the center of the mounting groove (301c). A frame (302b) is fixedly installed in the mounting groove (301c), and a bushing (302d) is embedded in the shaft hole (301d).
6. The high-precision guide rail structure for a gantry machining center according to claim 5, characterized in that, The mounting slot (301c) is fixedly connected to the motor (302a) via the frame (302b), and the shaft hole (301d) is rotatably engaged with the rotating rod (302c) via the bushing (302d). The rotating rod (302c) is connected to the shaft of the motor (302a) via a coupling, and the gear (302e) is sleeved on the end of the rotating rod (302c).
7. The high-precision guide rail structure for a gantry machining center according to claim 1, characterized in that, The sliding sleeve (301) has a sliding groove (301a) inside, and the sliding sleeve (301) is slidably connected to the guide rail body (1) through the sliding groove (301a). An electromagnet (303) is provided on the bottom inner wall of the sliding groove (301a), and the electromagnet (303) is connected to the storage battery (304a) through a wire and a switch.
8. The high-precision guide rail structure for a gantry machining center according to claim 1, characterized in that, The right side wall of the sliding sleeve (301) has a storage groove (301e) in the middle, and the battery (304a) is installed in the storage groove (301e). The upper end of the storage groove (301e) is covered with a cover plate (304).
Citation Information
Patent Citations
Guide rail structure of fixed beam type gantry machining center
CN220006764U