Workpiece clamping mechanism of gantry numerical control machining center

What is AI technical title?
AI technical title is built by Patsnap AI team. It summarizes the technical point description of the patent document.
By introducing a clamping mechanism consisting of a machining table and an electric slide table into the gantry CNC machining center, the problems of complex operation and low precision have been solved, enabling precise workpiece clamping and adaptation to multiple specifications, thereby improving machining quality and efficiency.

CN224488414UActive Publication Date: 2026-07-14XIANGYANG XINTIANZE MACHINERY EQUIPMENT CO LTD

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: XIANGYANG XINTIANZE MACHINERY EQUIPMENT CO LTD
Filing Date: 2025-07-15
Publication Date: 2026-07-14

AI Technical Summary

Technical Problem

The existing workpiece clamping mechanism of the gantry CNC machining center is complicated to operate and has low clamping accuracy, which leads to workpiece position deviation and reduces machining quality.

Method used

The clamping mechanism includes components such as a processing table, a moving frame, an electric slide, a processing head, a base plate, a slide groove, a slider, a screw, a nut, a fixed block, a clamping block, a spring, and a moving block. The connecting block and the moving block are moved down by bolts, so that the clamping block and the fixed block cooperate to achieve precise clamping. The clamping distance can be adjusted to adapt to workpieces of different specifications.

Benefits of technology

It achieves precise workpiece clamping, improves processing quality, simplifies operation, and adapts to the clamping requirements of workpieces of different specifications.

✦ Generated by Eureka AI based on patent content.

Smart Images

Figure CN224488414U_ABST

Patent Text Reader

Abstract

The utility model relates to related technical field of numerical control processing especially, a workpiece clamping mechanism of gantry numerical control machining center, including base, the one side surface fixed mounting of processing platform has the bottom plate, the inside of bottom plate is provided with the sliding slot, the inside of sliding slot is provided with movable sliding block. The workpiece clamping mechanism of gantry numerical control machining center, through the setting of processing platform, bottom plate, sliding block, screw rod, nut, first fixed block, second fixed block and clamping block, when clamping work, put in the workpiece to be processed between first fixed block and clamping block, and also put in the workpiece to be processed between second fixed block and clamping block, then down screw and make it enter the thread groove, and the bolt will be with the connecting block and move down, at this moment, the moving block will extrude the spring and move down, and the moving down of connecting block and moving block will make two clamping blocks move to two ends simultaneously, so that the clamping block can be clamped and fixed simultaneously with first fixed block and second fixed block.

Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of CNC machining technology, and in particular to a workpiece clamping mechanism for a gantry CNC machining center. Background Technology

[0002] Numerical control (NC) machining is a technology that uses computer programs to control machine tools for automated machining. Gantry CNC machining centers are a type of automated precision machining equipment used in CNC machining. Gantry CNC machining centers have a wide machining range, high rigidity and high stability, and very high machining efficiency. When machining workpieces, in order to ensure the accuracy of the machining position, it is necessary to clamp the workpieces to be machined in order to improve the machining quality. Therefore, a workpiece clamping mechanism for gantry CNC machining centers is particularly needed.

[0003] However, most existing workpiece clamping mechanisms in gantry CNC machining centers are complex to operate or have low clamping accuracy, and there is still a possibility of workpiece position deviation, which reduces the quality of machining.

[0004] To address the aforementioned issues, a search revealed a patent (public account number 202311556567.2) disclosing a CNC gantry milling machine for CNC machining centers. The patent states that "existing CNC gantry milling machines for CNC machining centers, when processing different types of workpieces (such as irregularly shaped parts, gears, and shafts), cannot conveniently and stably clamp and fix different types of workpieces according to actual needs using different fixtures. Conventional machine tool fixtures have a small contact area with irregularly shaped parts and shafts, thus they cannot conveniently and stably clamp and fix irregularly shaped parts and shafts of different sizes. Furthermore, conventional machine tool fixtures, when clamping and fixing gears, will obstruct the gear teeth, requiring multiple rotations to complete the gear tooth processing." This application incorporates a transmission disc, utilizing a second servo motor to drive the turntable to rotate stably, in conjunction with a limiting... With the contact limit of the positioning plate and the action of the guide rod, the transmission plate on the connecting shaft can be driven by the guide plate on the guide groove to rotate conveniently and stably intermittently, with each rotation being 90 degrees. During the rotation of the transmission plate, driven by the transmission shaft and guided by the connecting groove, the first, second, third, and fourth support plates can be driven to move smoothly and stably in conjunction with the connecting rod. This allows the first, second, third, and fourth support plates to move to the top one by one, thus enabling convenient and stable switching of various fixtures on the first, second, third, and fourth support plates. This increases the practicality and applicability of the CNC gantry milling machine and improves its working efficiency. Although this application can adapt to workpieces of different sizes by changing fixtures, the positional accuracy cannot be guaranteed when clamping the workpiece, thus failing to guarantee the quality of processing.

[0005] In light of this, in-depth research into the aforementioned issues led to the creation of this case. Utility Model Content

[0006] The purpose of this utility model is to provide a workpiece clamping mechanism for a gantry CNC machining center, so as to solve the problem mentioned in the background art that most existing workpiece clamping mechanisms for gantry CNC machining centers are complicated to operate or have low clamping accuracy when clamping workpieces, and there is still a possibility of workpiece position deviation, which reduces the quality of machining.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a workpiece clamping mechanism for a gantry CNC machining center, comprising a base, movable frames at both ends of the machining table, a first electric slide fixedly mounted on one side surface of the movable frame, a second electric slide fixedly mounted on the slide base of the first electric slide, a machining head fixedly mounted on the slide base of the second electric slide, a base plate fixedly mounted on one side surface of the machining table, a connecting groove formed on one side surface of the base plate, a sliding groove formed inside the base plate, a movable slider disposed inside the sliding groove, and a welded surface on one side surface of the slider. The slide is equipped with a screw, one end of which is threaded with a nut. A first fixing block is fixedly connected to one side surface of the slide, and a second fixing block is fixedly connected to one side surface of the slide. A movable limiting block is provided inside the slide groove. A clamping block is fixedly connected to one side surface of the limiting block. A moving groove is formed on one side surface of the clamping block. A spring is fixedly installed on one side inner wall of the moving groove. A moving block is fixedly connected to the other end of the spring. A connecting block is fixedly connected to one side surface of the moving block. A bolt is threaded through one end of the connecting block. A threaded groove is formed on the upper surface of the base plate.

[0008] Preferably, the slider forms a sliding structure with the base plate through a sliding groove, and two sets of sliders are provided, which are respectively fixedly connected to the first fixed block and the second fixed block.

[0009] Preferably, the screw and the base plate form a sliding structure through the connecting groove, and one end of the screw passes through the connecting groove and is threadedly connected to the nut.

[0010] Preferably, the limiting block forms a sliding structure with the base plate through a sliding groove.

[0011] Preferably, the two ends of the spring are fixedly connected to the clamping block and the moving block respectively, and the moving block forms a telescopic structure with the clamping block through the spring.

[0012] Preferably, the moving block forms a sliding structure with the clamping block through a moving groove.

[0013] Preferably, one end of the bolt passes through the connecting block and is threadedly connected to the threaded groove.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: The workpiece clamping mechanism of this gantry CNC machining center, through the arrangement of a machining table, a movable frame, a first electric slide, a second electric slide, a machining head, a base plate, a connecting groove, a sliding groove, a slider, a screw, a nut, a first fixed block, a second fixed block, a limit block, a clamping block, a movable groove, a spring, a movable block, a connecting block, a bolt, and a threaded groove, allows the workpiece to be processed to be placed between the first fixed block and the clamping block during workpiece clamping. At the same time, the workpiece is also placed between the second fixed block and the clamping block. Then, the bolt is turned down to enter the threaded groove, and the bolt will move the connecting block down. At this time, the movable block will squeeze the spring and move down. The downward movement of the connecting block and the movable block will cause the two clamping blocks to move to both ends simultaneously. In this way, the clamping blocks can cooperate with the first fixed block and the second fixed block to clamp and fix the workpiece to be processed at the same time. The clamping position is very precise, which improves the processing quality and is very simple to operate. Attached Figure Description

[0015] Figure 1 This is a side view of the appearance structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the interaction between the slider and the first fixing block of this utility model;

[0017] Figure 3 This is a schematic diagram of the interaction between the limiting block and the clamping block of this utility model;

[0018] Figure 4 This is a schematic diagram of the interaction between the spring and the moving block in this utility model.

[0019] In the diagram: 1. Machining table; 2. Moving frame; 3. First electric slide; 4. Second electric slide; 5. Machining head; 6. Base plate; 7. Connecting groove; 8. Slide groove; 9. Slider; 10. Screw; 11. Nut; 12. First fixing block; 13. Second fixing block; 14. Limiting block; 15. Clamping block; 16. Moving groove; 17. Spring; 18. Moving block; 19. Connecting block; 20. Bolt; 21. Threaded groove. Detailed Implementation

[0020] 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.

[0021] Please see Figures 1-4This utility model provides a technical solution: a workpiece clamping mechanism for a gantry CNC machining center, including a machining table 1, with movable frames 2 at both ends of the machining table 1, a first electric slide 3 fixedly mounted on one side surface of the movable frame 2, a second electric slide 4 fixedly mounted on the slide seat of the first electric slide 3, a machining head 5 fixedly mounted on the slide seat of the second electric slide 4, a base plate 6 fixedly mounted on one side surface of the machining table 1, a connecting groove 7 formed on one side surface of the base plate 6, a sliding groove 8 formed inside the base plate 6, a movable slider 9 disposed inside the sliding groove 8, a screw 10 welded to one side surface of the slider 9, and one end of the screw 10 threadedly connected to... A nut 11 is provided. A first fixing block 12 is fixedly connected to one side surface of the slider 9, and a second fixing block 13 is fixedly connected to one side surface of the slider 9. A movable limiting block 14 is provided inside the slide groove 8. A clamping block 15 is fixedly connected to one side surface of the limiting block 14. A moving groove 16 is opened on one side surface of the clamping block 15. A spring 17 is fixedly installed on one side inner wall of the moving groove 16. A moving block 18 is fixedly connected to the other end of the spring 17. A connecting block 19 is fixedly connected to one side surface of the moving block 18. A bolt 20 is threaded through one end of the connecting block 19. A threaded groove 21 is opened on the upper surface of the base plate 6. The slide is connected to the processing table 1 and the moving frame. 2. The arrangement of the first electric slide, 3. the second electric slide, 4. the processing head, 5. the base plate, 6. the connecting groove, 7. the slide, 8. the slider, 9. the screw, 10. the nut, 11. the first fixing block, 12. the second fixing block, 13. the limiting block, 14. the clamping block, 15. the moving groove, 16. the spring, 17. the moving block, 18. the connecting block, 19. the bolt, 20, and the threaded groove, 21, is as follows: When clamping the workpiece, the workpiece to be processed is placed between the first fixing block 12 and the clamping block 15, and simultaneously between the second fixing block 13 and the clamping block 15. Then, the bolt 20 is turned downwards to enter the threaded groove 21, and the bolt 20 will move the connecting block 19 downwards. At this time, the moving block 18 will squeeze the spring 17 and move downward. The downward movement of the connecting block 19 and the moving block 18 will cause the two clamping blocks 15 to move to both ends at the same time. In this way, the clamping block 15 can cooperate with the first fixed block 12 and the second fixed block 13 to clamp and fix the workpiece to be processed. The clamping position is very precise, which improves the processing quality and the operation is very simple. Secondly, when clamping the workpiece, the nut 11 can be loosened and the first fixed block 12 and the second fixed block 13 can be moved horizontally. The distance between the first fixed block 12 and the second fixed block 13 and the clamping block 15 can be adjusted. In this way, workpieces of different specifications and sizes can be clamped at the same time.

[0022] Furthermore, the slider 9 forms a sliding structure with the base plate 6 through the slide groove 8. There are two sets of sliders 9, which are fixedly connected to the first fixed block 12 and the second fixed block 13 respectively. With the arrangement of the slide groove 8 and the slider 9, when the slider 9 slides in the slide groove 8, it can move the first fixed block 12 and the second fixed block 13 horizontally, thereby adjusting the distance between the first fixed block 12 and the second fixed block 13 and the clamping block 15.

[0023] Furthermore, the screw 10 forms a sliding structure with the base plate 6 through the connecting groove 7. One end of the screw 10 passes through the connecting groove 7 and is threadedly connected to the nut 11. Through the setting of the screw 10 and the nut 11, the position of the slider 9 can be fixed.

[0024] Furthermore, the limiting block 14 forms a sliding structure with the base plate 6 through the slide groove 8. With the setting of the limiting block 14, when the clamping block 15 moves, the limiting block 14 will slide in the slide groove 8, and the limiting block 14 can limit the movement of the clamping block 15.

[0025] Furthermore, the two ends of the spring 17 are fixedly connected to the clamping block 15 and the moving block 18 respectively. The moving block 18 forms a telescopic structure with the clamping block 15 through the spring 17. With the setting of the spring 17, when the bolt 20 leaves the threaded groove 21, the moving block 18 will move upward with the connecting block 19 under the elastic force of the spring 17, and the clamping block 15 will release the workpiece.

[0026] Furthermore, the movable block 18 forms a sliding structure with the clamping block 15 through the movable groove 16. By setting the movable block 18, the movable block 18 can assist the movement of the connecting block 19 when it slides in the movable groove 16.

[0027] Furthermore, one end of the bolt 20 passes through the connecting block 19 and is threadedly connected to the threaded groove 21. With the setting of the bolt 20, when the bolt 20 moves down, it will move the connecting block 19 down together, so that the two clamping blocks 15 can move to both ends at the same time.

[0028] Working principle: When clamping a workpiece, the workpiece to be processed is placed between the first fixing block 12 and the clamping block 15, and simultaneously between the second fixing block 13 and the clamping block 15. Then, the bolt 20 is turned down to enter the threaded groove 21. The bolt 20 will move the connecting block 19 down, and at this time, the moving block 18 will squeeze the spring 17 and move it down. The downward movement of the connecting block 19 and the moving block 18 will cause the two clamping blocks 15 to move to both ends at the same time. In this way, the clamping blocks 15 can cooperate with the first fixing block 12 and the second fixing block 13 to clamp and fix the workpiece to be processed. Secondly, when clamping the workpiece, the nut 11 can be loosened and the first fixing block 12 and the second fixing block 13 can be moved horizontally to adjust the distance between the first fixing block 12 and the second fixing block 13 and the clamping block 15.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A workpiece clamping mechanism for a gantry CNC machining center, comprising a machining table (1), characterized in that: The processing table (1) is provided with movable frames (2) at both ends. A first electric slide (3) is fixedly installed on one side surface of the movable frame (2). A second electric slide (4) is fixedly installed on the slide base of the first electric slide (3). A processing head (5) is fixedly installed on the slide base of the second electric slide (4). A base plate (6) is fixedly installed on one side surface of the processing table (1). A connecting groove (7) is opened on one side surface of the base plate (6). A sliding groove (8) is opened inside the base plate (6). A movable slider (9) is provided inside the sliding groove (8). A screw (10) is welded to one side surface of the slider (9). A nut (11) is threaded to one end of the screw (10). A nut (11) is threaded to one end of the slider (9). A first fixing block (12) is fixedly connected to the side surface of the slider (9), a second fixing block (13) is fixedly connected to one side surface of the slider (9), a movable limiting block (14) is provided inside the slide groove (8), a clamping block (15) is fixedly connected to one side surface of the limiting block (14), a moving groove (16) is opened on one side surface of the clamping block (15), a spring (17) is fixedly installed on one side inner wall of the moving groove (16), a moving block (18) is fixedly connected to the other end of the spring (17), a connecting block (19) is fixedly connected to one side surface of the moving block (18), a bolt (20) is threaded through one end of the connecting block (19), and a threaded groove (21) is opened on the upper side surface of the base plate (6).

2. The workpiece clamping mechanism of a gantry CNC machining center according to claim 1, characterized in that: The slider (9) forms a sliding structure with the base plate (6) through the sliding groove (8). The slider (9) is provided in two sets and is fixedly connected to the first fixed block (12) and the second fixed block (13) respectively.

3. The workpiece clamping mechanism of a gantry CNC machining center according to claim 1, characterized in that: The screw (10) forms a sliding structure with the base plate (6) through the connecting groove (7), and one end of the screw (10) passes through the connecting groove (7) and is threadedly connected to the nut (11).

4. The workpiece clamping mechanism of a gantry CNC machining center according to claim 1, characterized in that: The limiting block (14) forms a sliding structure with the base plate (6) through the sliding groove (8).

5. The workpiece clamping mechanism of a gantry CNC machining center according to claim 1, characterized in that: The two ends of the spring (17) are fixedly connected to the clamping block (15) and the moving block (18) respectively. The moving block (18) forms a telescopic structure with the clamping block (15) through the spring (17).

6. The workpiece clamping mechanism of a gantry CNC machining center according to claim 1, characterized in that: The moving block (18) forms a sliding structure with the clamping block (15) through the moving groove (16).

7. The workpiece clamping mechanism of a gantry CNC machining center according to claim 1, characterized in that: One end of the bolt (20) passes through the connecting block (19) and is threadedly connected to the threaded groove (21).