Gantry machine tool ram automatic supporting mechanism

Abstract

The utility model relates to an automatic supporting mechanism for a ram of a gantry machine tool, which belongs to the technical field of numerical control gantry machine tools and comprises a sliding saddle and a ram in sliding connection with the sliding saddle, two groups of supporting components are symmetrically mounted at the bottom end of the sliding saddle, and a sliding mechanism is mounted between the supporting components and the ram. The sliding mechanism can slide or be fixed on the ram according to actual needs, a positioning assembly is installed at the bottom end in the sliding saddle, and the positioning assembly can fix the position of the sliding mechanism relative to the sliding saddle; the sliding mechanism comprises a guide rail fixedly connected with the center of the ram, a sliding block and a clamping device are installed on the guide rail, the sliding block is in sliding connection with the guide rail, a connecting base is arranged on the sides, away from the guide rail, of the sliding block and the clamping device, and the sliding block and the clamping device are fixedly connected with the connecting base. According to the ram supporting device, the supporting assembly, the sliding mechanism and the positioning assembly are arranged in a matched mode, powerful supporting of the ram is achieved, and the ram supporting device is simple in overall structure, high in practicability and worthy of wide-range application and popularization.

Description

Technical Field

[0001] The utility model belongs to the technical field of numerically controlled gantry machine tools, and in particular relates to an automatic ram supporting mechanism for a gantry machine tool. Background Art

[0002] CNC gantry machine tools are a type of general-purpose processing equipment widely used in the market. The machine ram is a rectangular block structure, with the machine spindle mounted at the front end. The spindle is the direct carrier for clamping tools and performing machine processing functions. Therefore, the rigidity and deformation resistance of the spindle-ram mechanism directly affect the machine's processing accuracy. The ram serves as both the carrier for fixing the spindle and the component that implements the machine's Z-axis operation. The ram extends and retracts within the inner cavity of the saddle. As the ram extends farther from the saddle, the force and deformation of the ram increase significantly, inevitably leading to a reduction in rigidity due to the large overhang. Therefore, designing an automatic support mechanism for the ram of a gantry machine tool that can provide support according to the actual needs of the ram during processing is a technical problem that currently needs to be solved. Utility Model Content

[0003] In order to solve the technical problems existing in the above-mentioned background technology, the utility model provides an automatic support mechanism for a gantry machine tool ram.

[0004] The purpose of the utility model can be achieved through the following technical solutions:

[0005] A gantry machine tool ram automatic support mechanism includes a saddle and a ram slidably connected to the saddle, two groups of support components are symmetrically installed at the bottom end of the saddle, a sliding mechanism is installed between the support components and the ram, and the sliding mechanism can slide or be fixed on the ram according to actual needs. A positioning assembly is installed at the inner bottom end of the saddle, and the positioning assembly can fix the position of the sliding mechanism relative to the saddle.

[0006] Furthermore, the sliding mechanism includes a guide rail fixedly connected to the center of the ram, with a slider and a clamp mounted on the guide rail. The slider is slidably connected to the guide rail. Connecting seats are provided on the sides of the slider and clamp facing away from the guide rail, with the slider and clamp respectively fixedly connected to the connecting seats. It is important to emphasize that the guide rail is positioned at the center of the ram's width, ensuring that the support force applied to the ram is centered, preventing offset support forces from generating additional torque and weakening the support effect. The clamp is controlled by a hydraulic system to automatically tighten and loosen the guide rail.

[0007] Furthermore, the support assembly includes an oil cylinder, a hinge seat is hingedly installed on the mounting end of the oil cylinder, the hinge seat is fixedly connected to the saddle, and the output end of the oil cylinder is hinged to the connecting seat through a joint bearing end rod.

[0008] Furthermore, the positioning assembly includes a bracket fixedly connected to the saddle, a cylinder is fixedly mounted on the bracket, and an output end of the cylinder passes through the bracket and is fixedly mounted with a positioning shaft.

[0009] Furthermore, a positioning hole is provided on the connecting seat, and when the ram does not need support, the positioning shaft cooperates with the positioning hole.

[0010] Furthermore, an oil-free bushing is provided between the positioning shaft and the bracket. The positioning shaft is slidably connected to the oil-free bushing. The oil-free bushing and the bracket have an interference fit. The oil-free bushing can support and guide the positioning shaft, which can effectively prevent radial force from damaging the cylinder.

[0011] Beneficial effects of the utility model:

[0012] The utility model provides an automatic support mechanism for the ram of a gantry machine tool. Through the coordinated arrangement of a support assembly, a sliding mechanism and a positioning assembly installed at the bottom of the saddle, the position of the sliding mechanism relative to the ram can be automatically controlled by a hydraulic system and an electrical system according to the specific situation of the support required when the ram processes parts. When the ram does not need external support, the sliding mechanism can be fixed as an assembly, and the ram can run freely in the saddle without being affected. When the ram needs unilateral or bilateral support, the support assembly and the sliding mechanism cooperate with each other to fix the sliding mechanism at the position where the ram needs support, and a reliable unilateral or bilateral supporting force is provided to the ram through the oil cylinder, thereby achieving strong support for the ram, improving the rigidity of the ram and improving the processing progress of the machine tool, thereby solving the technical problems in the background art.

[0013] The utility model has a simple structure and is easy to control. Moreover, the single-side and double-side support, support position, support force, etc. can be adjusted according to actual conditions. It has strong practicality and is worthy of wide-scale promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 This is a three-dimensional diagram of an automatic support mechanism for a gantry machine tool ram according to the present invention;

[0016] Figure 2 This is a schematic diagram of the internal structure of the sliding saddle of the utility model;

[0017] Figure 3 for Figure 2 A partial enlarged view of point A in the middle;

[0018] Figure 4 This is a structural diagram of the support assembly and sliding mechanism of the utility model;

[0019] Figure 5 This is a schematic structural diagram of the positioning assembly of the utility model;

[0020] Figure 6 This is a schematic diagram of the structure of the utility model when the ram does not need support;

[0021] Figure 7 This is a schematic diagram of the structure of the utility model when the ram requires unilateral support;

[0022] Figure 8 This is a schematic diagram of the structure of the utility model when the ram requires double-sided support.

[0023] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0024] 1. Saddle; 2. Ram; 3. Support assembly; 301. Cylinder; 302. Hinge seat; 303. Spherical bearing end rod; 4. Sliding mechanism; 401. Guide rail; 402. Slider; 403. Clamp; 404. Connecting seat; 4041. Positioning hole; 5. Positioning assembly; 501. Bracket; 502. Cylinder; 503. Positioning shaft; 504. Oil-free bushing. DETAILED DESCRIPTION

[0025] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figures 1-8 As shown, an automatic ram support mechanism for a gantry machine tool includes a saddle 1 and a ram 2 slidably connected to the saddle 1. Two sets of support assemblies 3 are symmetrically mounted on the bottom end of the saddle 1. A sliding mechanism 4 is mounted between the support assemblies 3 and the ram 2. A positioning assembly 5 is mounted on the inner bottom end of the saddle 1. The positioning assembly 5 can fix the position of the sliding mechanism 4 relative to the saddle 1.

[0027] The sliding mechanism 4 includes a guide rail 401 fixedly connected to the center of the ram 2. A slider 402 and a clamp 403 are slidably connected to the guide rail 401. A connecting seat 404 is provided on the side of the slider 402 and the clamp 403 away from the guide rail 401. The slider 402 and the clamp 403 are respectively fixedly connected to the connecting seat 404. The connecting seat 404 has a positioning hole 4041.

[0028] The support assembly 3 includes a cylinder 301, a hinge seat 302 is hingedly mounted on the mounting end of the cylinder 301, and the hinge seat 302 is fixedly connected to the saddle 1. The output end of the cylinder 301 is fixedly mounted with a joint bearing end rod 303, and the output end of the cylinder 301 is hingedly connected to the connecting seat 404 through the joint bearing end rod 303;

[0029] The positioning assembly 5 includes a bracket 501 fixedly connected to the saddle 1, and a cylinder 502 is fixedly installed on the bracket 501. The output end of the cylinder 502 passes through the bracket 501 and is fixedly installed with a positioning shaft 503. An oil-free bushing 504 is arranged between the positioning shaft 503 and the bracket 501. The positioning shaft 503 is slidably connected to the oil-free bushing 504, and the oil-free bushing 504 is interference fit with the bracket 501; when the slide 2 does not need support, the positioning shaft 503 cooperates with the positioning hole 4041.

[0030] Working principle:

[0031] When the utility model is in use, the position of the sliding mechanism 4 and whether support is required can be adjusted according to the actual needs such as the extension length of the ram 2 and the magnitude of the force;

[0032] See also Figure 6 As shown, when the ram 2 does not need support, the clamp 403 is in a loose state and is slidably connected to the guide rail 401. At the same time, the output end of the cylinder 502 extends, driving the positioning shaft 503 to insert into the positioning hole 4041 of the connecting seat 404, thereby fixing the position of the slider 402 and the clamp 403; the movement of the ram 2 in the saddle 1 is not affected in any way.

[0033] See also Figure 7 As shown, when the ram 2 needs unilateral support, the position where the ram 2 needs support is first moved to the slider 402, and the clamp 403 on the side that needs support clamps the guide rail 401 under the drive of the hydraulic system. The output end of the cylinder 502 on the side that needs support contracts and drives the positioning shaft 503 to be retracted from the positioning hole 4041. The other side that does not need support remains in its original state. Then the ram 2 moves and extends out of the saddle 1, and the sliding mechanism 4 on one side follows and extends out under the drive of the ram 2. At the same time, the hydraulic system drives the output end of the cylinder 301 to follow and extend. When the ram 2 reaches the specified position, the hydraulic system applies pressure to the output end of the cylinder 301 to form a strong support for the ram 2.

[0034] See also Figure 8As shown, when the ram 2 needs support on both sides, the position where the ram 2 needs support is first moved to the slider 402, and the clamps 403 on both sides clamp the guide rail 401 under the drive of the hydraulic system. At the same time, the output ends of the cylinders 502 on both sides contract to drive the positioning shaft 503 to be retracted from the positioning hole 4041, and then the ram 2 runs out of the saddle 1, and the sliding mechanism 4 follows and extends under the drive of the ram 2. At the same time, the hydraulic system drives the output end of the cylinder 301 to follow and extend. When the ram 2 reaches the specified position, the hydraulic system applies pressure to the output end of the cylinder 301 to form a strong support for the ram 2.

[0035] Throughout the specification, references to terms such as "one embodiment," "example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these 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 any one or more embodiments or examples.

[0036] The above content is merely an example and explanation of the structure of the present utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims, they should fall within the scope of protection of the present utility model.

Claims

1. An automatic support mechanism for a gantry machine tool ram, comprising a saddle (1) and a ram (2) slidably connected to the saddle (1), characterized in that: Two groups of support assemblies (3) are symmetrically installed at the bottom end of the saddle (1), a sliding mechanism (4) is installed between the support assemblies (3) and the ram (2), and the sliding mechanism (4) can slide or be fixed on the ram (2). A positioning assembly (5) is installed at the inner bottom end of the saddle (1), and the positioning assembly (5) can fix the position of the sliding mechanism (4) relative to the saddle (1).

2. The automatic support mechanism for the ram of a gantry machine tool according to claim 1, characterized in that: The sliding mechanism (4) comprises a guide rail (401) fixedly connected to the center of the ram (2); a slider (402) and a clamp (403) are mounted on the guide rail (401); the slider (402) is slidably connected to the guide rail (401); a connecting seat (404) is fixed on a side of the slider (402) and the clamp (403) away from the guide rail (401).

3. The automatic ram support mechanism for a gantry machine tool according to claim 2, characterized in that: The support assembly (3) comprises an oil cylinder (301), a mounting end of the oil cylinder (301) being hingedly mounted with a hinge seat (302), the hinge seat (302) being fixedly connected to the saddle (1), and an output end of the oil cylinder (301) being hingedly connected to a connecting seat (404).

4. The automatic ram support mechanism for a gantry machine tool according to claim 2, characterized in that: The positioning assembly (5) comprises a bracket (501) fixedly connected to the slide saddle (1), a cylinder (502) fixedly mounted on the bracket (501), and an output end of the cylinder (502) passes through the bracket (501) and is fixedly mounted with a positioning shaft (503).

5. The automatic ram support mechanism for a gantry machine tool according to claim 4, characterized in that: A positioning hole (4041) is provided on the connecting seat (404), and when the ram (2) does not need support, the positioning shaft (503) cooperates with the positioning hole (4041).

6. The automatic ram support mechanism for a gantry machine tool according to claim 4, characterized in that: An oil-free bushing (504) is provided between the positioning shaft (503) and the bracket (501), the positioning shaft (503) and the oil-free bushing (504) are slidably connected, and the oil-free bushing (504) and the bracket (501) are interference fit.

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