Gantry cross beam
By using inclined and vertical ribs to reinforce the gantry beam structure, the problems of large mass and deformation of existing gantry beams are solved, realizing a lightweight and high-precision gantry beam suitable for high-speed machine tools.
Patent Information
- Application Number
- CN202520056440.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-09
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-01-09
AI Technical Summary
Existing gantry beams are heavy, costly, and prone to deformation, affecting machining accuracy and making them unsuitable for high-speed machine tools.
The gantry beam structure uses first, second, and third inclined ribs set at an angle, and is reinforced with vertical ribs to reduce internal stiffening plates, with reinforcement only applied to critical areas.
A lightweight gantry beam structure has been achieved, which is suitable for high-speed machine tools, ensures machining accuracy, reduces the requirements for drive motor specifications, and simplifies cleaning.
Smart Images
Figure CN223833939U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of machine tools, and in particular to gantry beams. Background Technology
[0002] The crossbeam of a machine tool is mostly made of casting, fixed to the slide on both sides, moves on the bed, and is suspended in the middle. To ensure the rigidity of the crossbeam, it is generally reinforced with a "rice" pattern inside, and several reinforcing ribs are added in both the transverse and longitudinal directions.
[0003] The existing crossbeams with "X"-shaped ribs are heavy and expensive, and require larger drive motors, making them unsuitable for high-speed gantry milling machines. Weight reduction is necessary. In addition, the numerous intersecting ribs inside the crossbeam make sand removal difficult and hard to clean thoroughly. Furthermore, the "X"-shaped ribs in the middle of the crossbeam are too far from the fixed supports on both sides, causing excessive sagging deformation in the middle section due to its own weight, ultimately affecting the machining accuracy of the workpiece. Utility Model Content
[0004] In order to overcome the shortcomings of the existing technology, one of the objectives of this utility model is to provide a gantry beam that is lightweight and not easily deformed.
[0005] One of the objectives of this utility model is achieved through the following technical solution:
[0006] A gantry beam includes a top wall, a bottom wall, and two side walls. Each side wall connects the top wall and the bottom wall. The gantry beam also includes a first diagonal rib, a second diagonal rib, and a third diagonal rib. The first diagonal rib, the second diagonal rib, and the third diagonal rib are all inclinedly arranged inside the gantry beam. The first diagonal rib is arranged along the length direction of the gantry beam and extends from the top wall to the slider mounting position of the bottom wall. The second diagonal rib is arranged along the width direction of the gantry beam. The third diagonal rib is arranged along the length direction of the gantry beam and extends from the middle of the side wall to the bottom wall.
[0007] Furthermore, the third oblique rib is U-shaped.
[0008] Furthermore, the number of the third diagonal ribs is at least two, and the at least two third diagonal ribs are arranged in a figure-eight shape.
[0009] Furthermore, the gantry beam also includes vertical ribs, which are perpendicular to the bottom wall, and at least one of the vertical ribs is located between the two third diagonal ribs.
[0010] Furthermore, the two third diagonal ribs extend from the middle of the vertical rib on both sides. The vertical rib is rectangular and its four sides extend from the top wall, the bottom wall, and the two side walls, respectively.
[0011] Furthermore, the first inclined rib includes a first body and a second body, both of which are inclined at different angles, and one end of each of the first body and the second body is located at the slider mounting position.
[0012] Furthermore, both the first main body and the second main body are rectangular.
[0013] Furthermore, the second diagonal rib passes through the second main body.
[0014] Furthermore, there are two first diagonal ribs, and the two first diagonal ribs are symmetrical about the centerline of the gantry beam.
[0015] Furthermore, the top wall is provided with a first weight-reducing hole, and the two side walls are a first side wall and a second side wall, respectively. The first side wall is a sliding saddle connecting surface, and the second side wall is provided with a second weight-reducing hole.
[0016] Compared with the prior art, the gantry beam of this utility model includes a first inclined rib, a second inclined rib, and a third inclined rib. The first, second, and third inclined ribs are all inclinedly arranged inside the gantry beam. The first inclined rib is arranged along the length direction of the gantry beam and extends from the top wall to the slider mounting position on the bottom wall. The second inclined rib is arranged along the width direction of the gantry beam. The third inclined rib is arranged along the length direction of the gantry beam and extends from the middle of the side wall to the bottom wall. Through the above design, fewer ribs are arranged inside the gantry beam, and reinforcement is only carried out in important parts. This makes the overall beam lighter in weight while ensuring accuracy as much as possible, and more suitable for high-speed machine tools. Attached Figure Description
[0017] Figure 1 This is a perspective view of the gantry beam of this utility model;
[0018] Figure 2 for Figure 1 A three-dimensional sectional view of the gantry beam from one perspective;
[0019] Figure 3 for Figure 1 A three-dimensional sectional view of the gantry beam from another perspective.
[0020] In the diagram: 10, top wall; 11, first weight-reducing hole; 20, bottom wall; 21, suspended part; 22, fixed end; 23, slider mounting position; 30, first side wall; 40, second side wall; 41, second weight-reducing hole; 50, first diagonal rib; 51, first main body; 52, second main body; 60, second diagonal rib; 70, third diagonal rib; 80, vertical rib. Detailed Implementation
[0021] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or it can be fixed through another intermediate component. When a component is said to be "connected to" another component, it can be directly connected to the other component or it may be fixed through another intermediate component. When a component is said to be "set on" another component, it can be set directly on the other component or it may be set through another intermediate component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.
[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0024] Please see Figures 1 to 3 The gantry beam in this application is used in a high-speed gantry machine tool.
[0025] The gantry beam is rectangular in shape and includes a top wall 10, a bottom wall 20, and two side walls. The top wall 10, bottom wall 20, and side walls form a hollow structure, and multiple reinforcing ribs are provided inside the gantry beam to enhance its structural strength.
[0026] The top wall 10 is provided with a plurality of first weight reduction holes 11, which are through holes used to reduce the weight of the gantry beam.
[0027] The bottom wall 20 includes a suspended portion 21 and two fixed ends 22, which are located at opposite ends of the suspended portion 21. The bottom of the suspended portion 21 is at the same height as the bottom of the fixed ends 22, thus suspending the suspended portion 21. Two slider mounting positions 23 are formed at the end of the suspended portion 21 closest to the fixed ends 22, and these two slider mounting positions 23 are symmetrically arranged about the centerline of the gantry beam.
[0028] The two side walls are a first side wall 30 and a second side wall 40, which are arranged opposite to each other and parallel to each other.
[0029] The first sidewall 30 is a sliding saddle connection surface, and the second sidewall 40 is provided with a second weight reduction hole 41, which is a through hole used to reduce the weight of the gantry beam.
[0030] The reinforcing ribs include first oblique ribs 50 , second oblique ribs 60 , third oblique ribs 70 and vertical ribs 80 .
[0031] The first inclined rib 50 is inclined along the length of the gantry beam. The first inclined rib 50 is generally rectangular, with its four sides located on the top wall 10, bottom wall 20, and two side walls, respectively. The first inclined rib 50 extends from the top wall 10 to the slider mounting position 23 on the bottom wall 20. There are multiple first inclined ribs 50, symmetrical about the centerline of the gantry beam. Each first inclined rib 50 includes a first body 51 and a second body 52, both inclined, but with different inclination angles. The bottom ends of both the first body 51 and the second body 52 are located at the slider mounting position 23. The top ends of both the first body 51 and the second body 52 are located on the top wall 10. The first body 51 and the second body 52 are arranged in a fan shape.
[0032] The second inclined rib 60 is inclined along the width direction of the gantry beam. The second inclined rib 60 extends from the top wall 10 to the bottom of the third inclined rib 70. The second inclined rib 60 passes through the second main body 52 and is straight.
[0033] The third diagonal reinforcement 70 is inclined along the length of the gantry beam. The third diagonal reinforcement 70 is U-shaped and extends from the middle of the side wall to the bottom wall 20. There are two third diagonal reinforcements 70, symmetrically arranged about the centerline of the gantry beam, forming a V-shape. Specifically, the two third diagonal reinforcements 70 extend from the middle of both sides of a vertical reinforcement 80, and are symmetrical about the plane containing the vertical reinforcement 80.
[0034] The vertical ribs 80 are perpendicular to the bottom wall 20. The vertical ribs 80 are rectangular, and their four sides extend from the top wall 10, the bottom wall 20, and the two side walls, respectively. There are multiple vertical ribs 80, which are spaced apart.
[0035] The reinforcing ribs of the gantry beam in this application include a first diagonal rib 50, a second diagonal rib 60, a third diagonal rib 70, and a vertical rib 80. Through the above design, fewer internal ribs are arranged, and reinforcement is only carried out in important parts, so that the overall beam is lighter in weight while ensuring accuracy as much as possible, making it more suitable for high-speed machine tools.
[0036] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model. These are all equivalent modifications and improvements made to the above embodiments based on the essential technology of this utility model, and all of these fall within the protection scope of this utility model.
Claims
1. A gantry beam, comprising a top wall, a bottom wall, and two side walls, each of the side walls connecting the top wall and the bottom wall, characterized in that: The gantry beam further includes a first inclined rib, a second inclined rib, and a third inclined rib. The first, second, and third inclined ribs are all inclinedly arranged inside the gantry beam. The first inclined rib is arranged along the length direction of the gantry beam and extends from the top wall to the slider mounting position of the bottom wall. The second inclined rib is arranged along the width direction of the gantry beam. The third inclined rib is arranged along the length direction of the gantry beam and extends from the middle of the side wall to the bottom wall.
2. The gantry beam according to claim 1, characterized in that: The third diagonal reinforcement is U-shaped.
3. The gantry beam according to claim 1, characterized in that: The number of the third diagonal ribs is at least two, and the at least two third diagonal ribs are arranged in a figure-eight shape.
4. The gantry beam according to claim 3, characterized in that: The gantry beam also includes vertical bars, which are perpendicular to the bottom wall, and at least one of the vertical bars is located between the two third diagonal bars.
5. The gantry beam according to claim 4, characterized in that: The two third diagonal ribs extend from the middle of the vertical rib on both sides. The vertical rib is rectangular and its four sides extend from the top wall, the bottom wall and the two side walls respectively.
6. The gantry beam according to claim 1, characterized in that: The first inclined rib includes a first body and a second body, both of which are inclined at different angles. One end of each of the first and second bodies is located at the slider mounting position.
7. The gantry beam according to claim 6, characterized in that: Both the first and second main bodies are rectangular.
8. The gantry beam according to claim 6, characterized in that: The second diagonal rib passes through the second main body.
9. The gantry beam according to claim 6, characterized in that: There are two first diagonal ribs, and the two first diagonal ribs are symmetrical about the centerline of the gantry beam.
10. The gantry beam according to claim 1, characterized in that: The top wall is provided with a first weight reduction hole, and the two side walls are a first side wall and a second side wall, respectively. The first side wall is a sliding saddle connecting surface, and the second side wall is provided with a second weight reduction hole.