A welding positioning tool for a welding machining center for CT bed machining

Abstract

The utility model relates to CT bed processing welding positioning frock technical field discloses a kind of CT bed processing welding machining center welding positioning frock, the upper surface of workbench is fixedly connected with first locating seat on one side, the upper surface of workbench is fixedly connected with second locating seat on the other side, third locating seat is opened in the upper surface of second locating seat, the upper surface of workbench is fixedly connected with limit board, one end of telescopic link is fixedly connected with clamping plate, the middle part of the outer surface of clamping plate is fixedly connected with threaded tube, the inner side wall of threaded tube is drivingly connected with two-way screw rod, first connecting rod and second connecting rod are welded in the inner side wall of cross arm arm rod, baffle is welded in the outer side of second connecting rod, pivot hole is opened in the outer surface of the both ends of cross arm arm rod, the device can realize accurate positioning of each component of cross arm to reduce welding error, can also adapt to cross arm component of different width size, effectively improve the precision and efficiency of CT bed cross arm welding processing.

Description

Technical Field

[0001] This utility model relates to the technical field of welding positioning fixtures for CT bed processing, and more specifically, it relates to welding positioning fixtures for welding machining centers used in CT bed processing. Background Technology

[0002] CT bed manufacturing is a core component of medical imaging equipment manufacturing. It primarily involves the processing and assembly of key structural components such as the CT bed frame, lifting support, and scanning positioning crossarm. Processes including welding, cutting, and precision assembly are required to ensure the CT bed possesses stable support performance, precise movement accuracy, and good structural strength. Among these, the CT bed support crossarm, as the core component supporting the bed surface and connecting the lifting mechanism, directly determines the operational stability and scanning positioning accuracy of the CT bed through its welding quality. Strict control over welding position accuracy and weld quality is essential to meet the stringent safety and reliability requirements of medical equipment, making it one of the most technically challenging and critical processes in CT bed manufacturing.

[0003] However, the traditional welding process for the crossarms of CT bed supports suffers from significant positioning defects, severely restricting welding quality and production efficiency. Existing processing methods largely rely on manual measurement and positioning: operators must repeatedly measure the relative position, angle, and spacing between the crossarms and the support using tools such as tape measures and squares, and then adjust the workpiece posture based on experience before welding. This method is susceptible to human error (such as measurement reading deviations and positioning offsets caused by hand tremors), leading to deviations in the welding position of the crossarms. This not only causes uneven stress on the weld and reduced structural stability but may also require rework for correction, increasing production costs. Furthermore, the manual measurement and positioning process is cumbersome and time-consuming, failing to meet the demands of high-efficiency welding in large-scale CT bed production, severely slowing down the overall processing progress. Therefore, a dedicated welding positioning fixture is urgently needed to solve these problems. Utility Model Content

[0004] (a) Technical problems to be solved In view of the above situation and to overcome the defects of the prior art, this utility model provides a welding positioning fixture for a welding machining center for CT bed processing, which aims to solve the problems in the background art.

[0005] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: A welding positioning fixture for a welding machining center used in CT bed processing, comprising a worktable and a cross arm, characterized in that: a first positioning seat is fixedly connected to one side of the upper surface of the worktable, a second positioning seat is fixedly connected to the other side of the upper surface of the worktable, a third positioning seat is provided on the upper surface of the second positioning seat, a limit plate is fixedly connected to the upper surface of the worktable, a telescopic rod is slidably connected to the lower surface of the worktable through a limit tube, a clamping plate is fixedly connected to one end of the telescopic rod, a threaded tube is fixedly connected to the middle of the outer surface of the clamping plate, a bidirectional screw is drivenly connected to the inner wall of the threaded tube, the cross arm is disposed on the upper surface of a support column, a first connecting rod and a second connecting rod are welded to the inner wall of the cross arm, a stop is welded to the outer side of the second connecting rod, and pivot holes are provided on the outer surfaces of both ends of the cross arm.

[0006] The present invention is further configured such that four limiting plates are provided and symmetrically distributed, and limiting posts are fixedly connected to the outer surface of the limiting plates.

[0007] The present invention is further configured such that support columns are fixedly connected to both sides of the outer surface of the clamping plate, and a positioning pin is fixedly connected to the middle of the outer surface of the clamping plate.

[0008] The present invention is further configured such that there are two clamping plates arranged symmetrically front and back, and the outer surfaces of the two clamping plates respectively abut against the outer surface of the cross arm.

[0009] The present invention is further configured such that a limiting block is fixedly connected to the outer surface of the middle part of the bidirectional screw, a limiting groove is formed on the outer surface of the limiting block, a plurality of limiting grooves are provided and evenly distributed in a ring array, a rotating housing is rotatably connected to the outer side of the outer surface of the bidirectional screw, and an assist rod is inserted into the inner side wall of the rotating housing.

[0010] The present invention is further configured such that a limiting block is fixedly connected to the lower end of the assist rod, the outer surface of the limiting block is engaged with the inner side wall of the limiting groove, and a handle is fixedly connected to the upper end of the assist rod.

[0011] The present invention is further configured such that the first positioning seat and the first connecting rod are correspondingly arranged, the second positioning seat and the second connecting rod are correspondingly arranged, and the stop block and the third positioning seat are correspondingly arranged. (III) Beneficial Effects Compared with the prior art, this utility model provides a welding positioning fixture for a welding machining center for CT bed processing, which has the following beneficial effects: 1. This welding positioning fixture for a CT bed processing welding machining center, through the arrangement of a first positioning seat, a second positioning seat, a third positioning seat, a limiting post, a clamping plate, and a positioning pin, enables the welding positioning fixture for the CT bed processing welding machining center to facilitate the positioning of various components of the cross arm. Through the coordinated arrangement of the first positioning seat, the second positioning seat, the third positioning seat, the limiting post, the clamping plate, and the positioning pin, the cross arm, the first connecting rod, the second connecting rod, and the stop block can be positioned and fixed during use, thereby ensuring dimensional deviations during welding and achieving the purpose of facilitating rapid positioning for CT bed welding processing.

[0012] 2. This welding positioning fixture for a CT bed processing welding machining center, through the arrangement of a bidirectional screw, a limiting block, a limiting slot, a rotating housing, an assisting rod, and a limiting block, enables the welding positioning fixture for CT bed processing welding machining center to easily adapt to the positioning of cross arm components of different widths. Through the coordinated arrangement of the bidirectional screw, limiting block, limiting slot, rotating housing, assisting rod, and limiting block, the two clamping plates can be quickly and synchronously adjusted towards the center during use, thereby driving the two cross arm arms to move towards the center, so that the components of the cross arm can quickly complete the positioning connection and the width can be adjusted. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention in its open state; Figure 2 This is a three-dimensional structural diagram of the present invention in the clamping state; Figure 3 This is a three-dimensional structural diagram of the clamping plate of this utility model; Figure 4 This is a three-dimensional structural diagram of the interior of the rotating outer shell of this utility model; Figure 5 This is a three-dimensional structural diagram of the cross arm of this utility model.

[0014] In the diagram: 1. Workbench; 2. First positioning seat; 3. Second positioning seat; 4. Third positioning seat; 5. Limiting plate; 6. Limiting post; 7. Telescopic rod; 8. Clamping plate; 9. Support column; 10. Positioning pin; 11. Threaded tube; 12. Double-acting screw; 13. Limiting block; 14. Limiting slot; 15. Rotating housing; 16. Assist rod; 17. Limiting block; 18. Handle; 19. Cross arm; 20. First connecting rod; 21. Second connecting rod; 22. Stop; 23. Rotary shaft hole. Detailed Implementation

[0015] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0016] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0017] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0018] Please see Figures 1-5 A welding positioning fixture for a welding machining center used in CT bed processing has a worktable 1 as the basic load-bearing structure. The upper surface is fitted with a first positioning seat 2, a second positioning seat 3 and a limiting plate 5 respectively through a fixed connection. The lower surface is slidably connected to a telescopic rod 7 through a limiting tube. The end of the telescopic rod 7 is fixedly connected to a clamping plate 8. At the same time, the cross arm 19 is placed in the overall structure of the fixture through a support column 9. The connection and layout of each component provides a basic framework for the welding positioning of the cross arm.

[0019] Specifically, the first positioning seat 2, fixedly connected to one side of the upper surface of the workbench 1, corresponds to the first connecting rod 20 welded to the inner wall of the cross arm 19. The second positioning seat 3, fixedly connected to the other side of the upper surface of the workbench 1, corresponds to the second connecting rod 21 welded to the inner wall of the cross arm 19. The third positioning seat 4, opened on the upper surface of the second positioning seat 3, corresponds to the stop block 22 welded to the outer side of the second connecting rod 21. The pre-positioning of the first connecting rod 20, the second connecting rod 21, and the stop block 22 can be achieved through the correspondence of the three. Four symmetrically distributed... The limiting plate 5 has a limiting post 6 fixedly connected to its outer surface, which can limit the cross arm 19 from the side to prevent the cross arm 19 from shifting laterally; the lower surface of the worktable 1 is slidably connected to the telescopic rod 7 through the limiting tube, one end of the telescopic rod 7 is fixedly connected to the clamping plate 8, and the two sides of the outer surface of the clamping plate 8 are fixedly connected to the support post 9. The cross arm 19 is set on the upper surface of the support post 9. At the same time, the positioning pin 10 fixedly connected to the middle of the outer surface of the clamping plate 8 can be inserted into the pivot hole 23 opened on the outer surface of both ends of the cross arm 19 to achieve longitudinal positioning of the cross arm 19 and prevent it from rotating during welding.

[0020] Please see Figures 1-5The tooling is fixedly connected to the threaded tube 11 on the clamping plate 8, and forms a transmission connection with the bidirectional screw 12 through the threaded tube 11. The bidirectional screw 12 is equipped with a limiting block 13 in the middle, and the outer side is fitted with a rotating shell 15 and an assist rod 16. The assist rod 16 is engaged with the limiting slot 14 of the limiting block 13 through the limiting block 17, thus forming a complete clamping and adjusting mechanism.

[0021] Specifically, the inner wall of the threaded tube 11, which is fixedly connected to the middle of the outer surface of the clamping plate 8, is connected to the bidirectional screw 12. The outer surface of the middle part of the bidirectional screw 12 is fixedly connected to a limiting block 13. The outer surface of the limiting block 13 is provided with several limiting slots 14 arranged in a ring array. The outer surface of the bidirectional screw 12 is rotatably connected to a rotating shell 15 outside the limiting block 13. An assist rod 16 is inserted into the inner wall of the rotating shell 15. The outer surface of the limiting block 17, which is fixedly connected to the lower end of the assist rod 16, is engaged with the inner wall of the limiting slot 14. The upper end of the assist rod 16 is fixedly connected to a handle 18. When in use, the handle 18 is held and the assist rod 16 is swung. Through the engagement of the limiting block 17 and the limiting slot 14, the bidirectional screw 12 is driven to rotate. When the bidirectional screw 12 rotates, it drives the threaded tube 11 to move, thereby driving the two clamping plates 8, which are symmetrically arranged front and back and whose outer surfaces abut against the outer surface of the cross arm 19, to move synchronously to the middle or both sides, so as to realize the adjustment and positioning of the cross arm components.

[0022] In summary, when using the overall equipment: First, place the two crossarms 19 on the upper surfaces of the two support columns 9 respectively, and insert the positioning pins 10 into the pivot holes 23 in the middle of the crossarms 19. This completes the positioning of the two crossarms 19. Then, place the first connecting rod 20 and the second connecting rod 21 inside the first positioning seat 2 and the second positioning seat 3 respectively. Next, place the stop block 22 inside the third positioning seat 4. Then, hold the handle 18 and swing the assist rod 16. When the assist rod 16 rotates, it drives the bidirectional screw 12 to rotate through the engagement of the limit block 17 and the limit slot 14. When the bidirectional screw 12 rotates, it drives the transmission connection with the threaded tube 11, which will drive the two clamping plates 8 to move. The two cross arms 19 move synchronously towards the center to the ends of the first connecting rod 20 and the second connecting rod 21, so that the two cross arms 19 tightly abut against the ends of the first connecting rod 20 and the second connecting rod 21, improving the welding effect and making it easier to position the connection between multiple parts, reducing the error in the production welding process. The movable connection of the two clamping plates 8 allows the two fixtures to be adapted to the first connecting rod 20 and the second connecting rod 21 of different lengths. The setting of the limiting block 13, the limiting slot 14, the rotating shell 15, the assist rod 16 and the limiting block 17 allows the bidirectional screw 12 to rotate easily in any direction. The assist rod 16 provides assistance for the rotation of the bidirectional screw 12 and is easy to adjust.

[0023] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A welding positioning fixture for a welding machining center used in CT bed processing, comprising a worktable (1) and a crossarm (19), characterized in that: A first positioning seat (2) is fixedly connected to one side of the upper surface of the workbench (1), and a second positioning seat (3) is fixedly connected to the other side of the upper surface of the workbench (1). A third positioning seat (4) is provided on the upper surface of the second positioning seat (3). A limit plate (5) is fixedly connected to the upper surface of the workbench (1). A telescopic rod (7) is slidably connected to the lower surface of the workbench (1) through a limit tube. A clamping plate (8) is fixedly connected to one end of the telescopic rod (7). A threaded tube (11) is fixedly connected to the middle of the outer surface of the clamping plate (8). A bidirectional screw (12) is drivenly connected to the inner wall of the threaded tube (11). The cross arm (19) is set on the upper surface of the support column (9). A first connecting rod (20) and a second connecting rod (21) are welded to the inner wall of the cross arm (19). A stop block (22) is welded to the outer side of the second connecting rod (21). A pivot hole (23) is provided on the outer surface of both ends of the cross arm (19).

2. The welding positioning fixture for a welding machining center for CT bed processing according to claim 1, characterized in that: The limiting plate (5) is provided in four symmetrically distributed, and the outer surface of the limiting plate (5) is fixedly connected to the limiting post (6).

3. The welding positioning fixture for a welding machining center for CT bed processing according to claim 1, characterized in that: Support columns (9) are fixedly connected to both sides of the outer surface of the clamping plate (8), and a positioning pin (10) is fixedly connected to the middle of the outer surface of the clamping plate (8).

4. The welding positioning fixture for a welding machining center for CT bed processing according to claim 1, characterized in that: Two clamping plates (8) are provided and are arranged symmetrically in front and behind. The outer surfaces of the two clamping plates (8) respectively abut against the outer surface of the cross arm (19).

5. The welding positioning fixture for a welding machining center for CT bed processing according to claim 1, characterized in that: A limiting block (13) is fixedly connected to the outer surface of the middle part of the bidirectional screw (12). A limiting slot (14) is opened on the outer surface of the limiting block (13). Several limiting slots (14) are provided and are evenly distributed in a ring array. A rotating shell (15) is rotatably connected to the outer surface of the bidirectional screw (12) on the outside of 13. An assist rod (16) is inserted into the inner wall of the rotating shell (15).

6. The welding positioning fixture for a welding machining center for CT bed processing according to claim 5, characterized in that: The lower end of the assist rod (16) is fixedly connected to a limiting block (17), the outer surface of the limiting block (17) is engaged with the inner wall of the limiting groove (14), and the upper end of the assist rod (16) is fixedly connected to a handle (18).

7. The welding positioning fixture for a welding machining center for CT bed processing according to claim 1, characterized in that: The first positioning seat (2) and the first connecting rod (20) are respectively set, the second positioning seat (3) and the second connecting rod (21) are respectively set, and the stop block (22) and the third positioning seat (4) are respectively set.

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