A special-shaped pipe drilling tool

By designing a drilling fixture for irregularly shaped pipes, and using a workpiece support platform, L-shaped side plates, and multiple locking structures to accurately position the irregularly shaped pipes, the problems of low efficiency, large errors, and high costs in the processing of irregularly shaped pipes are solved, and efficient and low-cost drilling processing is achieved.

CN224464208UActive Publication Date: 2026-07-07SHIYAN HESHUO IND & TRADE CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHIYAN HESHUO IND & TRADE CO LTD
Filing Date
2025-08-08
Publication Date
2026-07-07

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    Figure CN224464208U_ABST
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Abstract

The utility model provides a special-shaped pipe fitting drilling frock, including workpiece bearing platform, the front and back both sides of workpiece bearing platform are provided with a pair of L shape side plate, the top of workpiece bearing platform is provided with the fixed base for limiting processing workpiece, the top of fixed base is provided with the drilling for processing, is provided with the drill grinding cover on the drilling, the top and the side of fixed base are provided with the pressure mechanism for further positioning processing workpiece respectively, the vertical part between two L shape side plates of front and back is equipped with the support rib board for reinforcing L shape side plate, the vertical part right side of its two L shape side plates still is equipped with the turnover pressure mechanism, its workpiece is limited on workpiece bearing platform through fixed base and turnover pressure mechanism, and is further accurately positioned and is limited to workpiece through pressure mechanism. The utility model discloses simple structure has reduced production cost, and it is convenient for the production operation of worker, and drilling positioning is accurate and convenient, reduces the defective product rate, and improves production efficiency.
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Description

Technical Field

[0001] This utility model relates to the field of processing equipment, specifically to a drilling tool for irregularly shaped pipe fittings. Background Technology

[0002] In machining, there are irregularly shaped parts. The fabrication of such parts generally lacks mature, specialized automated equipment; such equipment is expensive and requires custom customization. Therefore, the process is primarily manual, often requiring multiple workers. Due to their irregular shape, the workpieces are unstable and cannot be laid flat like ordinary pipes. Drilling irregularly shaped pipes is time-consuming, inefficient, and labor-intensive; furthermore, human error can lead to inconsistent product quality. To address the problems of low efficiency, repeated clamping, and difficulty in guaranteeing drilling accuracy in existing irregularly shaped workpiece drilling processes, a simple, low-cost tooling fixture is needed. This fixture should be able to drill two to three sides, improving drilling efficiency, increasing production output, and achieving cost reduction and efficiency improvement.

[0003] Chinese utility model application CN202421643915.X discloses an automatic drilling and tapping fixture for irregularly shaped tubes, relating to the technical field of automatic drilling and tapping fixtures for irregularly shaped tubes. It includes: a worktable, a fixing mechanism located above the worktable, and a drilling mechanism connected to a controller; the fixing mechanism has a fixing groove constructed in the shape of an irregularly shaped tube. This utility model can drill multiple holes at a time, improving efficiency and providing very tight clamping. The drilling mechanism operates according to controller instructions, ensuring stable drilling quality for the same batch of irregularly shaped tubes and reducing labor costs. However, automated equipment ultimately cannot adapt to various irregularly shaped tubes. Considering the customization and maintenance of equipment and the resulting production capacity benefits, designing a more easily manually operated irregularly shaped fixture is more in line with actual production conditions. Therefore, this utility model cannot solve the aforementioned technical defects. Utility Model Content

[0004] The purpose of this utility model is to provide a drilling fixture for irregularly shaped pipe fittings, in order to solve the problems of high cost and complex maintenance of specially designed automated equipment for processing irregularly shaped parts, resulting in high production costs, as well as the problems of high frequency of operator errors, long processing time, large drilling errors, inability to guarantee product quality, and low production efficiency caused by the lack of suitable drilling fixtures.

[0005] To address this, a drilling fixture for irregularly shaped pipe fittings is proposed, comprising a workpiece support platform. The workpiece support platform has a pair of L-shaped side plates on its front and rear sides. A fixed base is provided above the workpiece support platform to restrict the workpiece being processed. A drilling hole for processing is opened above the fixed base, and a drilling sleeve is provided in the drilling hole. A clamping mechanism for further positioning the workpiece is provided on the top and sides of the fixed base. A supporting rib for reinforcing the L-shaped side plates is provided between the vertical portions of the two L-shaped side plates. A flipping clamping mechanism is also provided on the right side of the vertical portions of the two L-shaped side plates. The workpiece is restricted on the workpiece support platform by the fixed base and the flipping clamping mechanism, and the clamping mechanism further precisely positions and restricts the workpiece.

[0006] The advantages are as follows: The workpiece support platform holds the tubular parts to be processed. The workpiece support platform and the L-shaped side plates on both sides combine to form the main structure of the basic tooling. The fixed base above the workpiece support platform is used for quick and basic fixation of the irregular tubular parts. The fixed base has drill holes for processing, and drilling sleeves are installed in the drill holes to facilitate processing. The clamping mechanisms on the top and sides of the fixed base are used to further precisely position the irregular tubular parts, thereby improving the accuracy of drilling and reducing the defect rate of products. At the same time, the clamping mechanisms allow for the assembly and disassembly of the workpiece through tightening and loosening, which facilitates production operations and greatly improves production efficiency. The support ribs enhance the structural stability of the two L-shaped side plates and can also provide auxiliary support for the other end of the irregular tubular parts to be processed, so as to further improve the firmness when fixing the irregular tubular parts. The flipping clamping mechanism further clamps and fixes the other end of the irregular tubular parts to be processed from the outside.

[0007] A further improvement is that the clamping structure includes a nut welded to the drilling fixture of the irregular pipe fitting, and a tightening bolt that cooperates with the nut. After the tightening bolt is tightened, it will abut against the surface of the workpiece to further accurately position the drilling of the workpiece.

[0008] The effect is that by adjusting the tightness of the rotating bolts, the workpiece can be loaded, unloaded, and fixed, which improves the product manufacturing process, greatly facilitates the actual production operation of workers, and significantly increases production efficiency.

[0009] A further improvement is that a clamping mechanism for positioning and processing workpieces is provided on the bottom surface of the vertical portion of the front L-shaped side plate.

[0010] The effect is that the clamping mechanism in this part is used to further fix the other end of the irregular workpiece to be processed, which can play an auxiliary role in the stability of the entire irregular tube during processing.

[0011] A further improvement is that a reinforcing support pipe is provided at the right-angle connection between the workpiece support platform and the two L-shaped side plates.

[0012] The effect is that the reinforced support tube is used to improve the strength of the workpiece bearing platform and extend the service life of the utility model.

[0013] A further improvement is that the structure of the fixed base is a U-shaped groove welded to the workpiece support platform, with the opening of the U-shaped groove facing downward and fixedly integrated with the workpiece support platform, and several holes of different sizes are opened around its body.

[0014] The advantages are: the fixed base of the U-shaped groove structure fits the shape of the irregular pipe fitting, which facilitates the quick loading and unloading of the workpiece to be processed during production. The holes opened around it can reduce the volume and weight of the utility model without affecting the stability of the utility model structure, and can also facilitate real-time observation of the processing of the irregular pipe fitting inside.

[0015] A further improvement is that the flipping and pressing mechanism includes a flipping hinge on the right side of the vertical portion of the rear L-shaped side plate, the other end of which is connected to the flipping and pressing plate. It also includes a movable buckle on the surface of the vertical portion of the front L-shaped side plate, and the movable buckle and the flipping and pressing plate are at the same horizontal position. When the flipping and pressing plate on the rear L-shaped side plate is pressed onto the front L-shaped side plate after being rotated horizontally by the flipping hinge, the movable buckle will lock the flipping and pressing plate to form a positioning restriction on the workpiece.

[0016] The effect is that the flipping and clamping mechanism fixes and restricts the other end of the irregular pipe to be processed inside the vertical part of the two front and rear L-shaped side plates, so as to improve the stability of the entire irregular pipe during processing, thereby further improving the accuracy of drilling.

[0017] A further improvement is that the clamping mechanism of the vertical portion of the L-shaped side plate, through further cooperation with the flipping clamping mechanism, can further restrict and position the internal workpiece of the vertical portion of the L-shaped side plate.

[0018] The effect is that, in order to improve the stability and accuracy of drilling and processing irregular pipe fittings to more than 100%, the clamping mechanism at the bottom of the L-shaped side plate will hold against the other end of the irregular pipe fitting to be processed, so as to further restrict and position the irregular pipe fitting, striving for even greater stability and precision.

[0019] Beneficial effects:

[0020] This utility model's design conforms to the shape of irregularly shaped pipe fittings. During processing, the product is directly placed into the fixed base on the workpiece support platform. Multiple locking structures at different positions and a flip-locking structure at the bottom of the L-shaped side plate ensure precise positioning of the workpiece, achieving rapid loading and unloading, rapid positioning, and rapid production. The drilling sleeve on the base allows for quick and accurate positioning during drilling. Through structural optimization, this utility model simplifies the production process, reduces equipment production costs, and makes operation more convenient for workers, ultimately improving overall production efficiency and achieving cost reduction and profit enhancement. Attached Figure Description

[0021] Figure 1 This is an isometric schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is the front view of this utility model;

[0023] Figure 3 This is a top view of the present invention;

[0024] Figure 4 This is the left view of this utility model;

[0025] In the figure, 1 is the workpiece support platform, 2 is the L-shaped side plate, 3 is the fixed base, 4 is the drilling hole, 5 is the drilling and grinding sleeve, 6 is the clamping mechanism, 7 is the support rib plate, 8 is the flipping clamping mechanism, 9 is the nut, 10 is the tightening bolt, 11 is the reinforcing support tube, 12 is the flipping hinge, 13 is the movable buckle, 14 is the flipping clamping plate, and 33 is the irregular workpiece to be processed. Detailed Implementation

[0026] The following is in conjunction with the instruction manual. Figures 1 to 4 The technical solution and its beneficial effects of this utility model will be made clearer and more explicit through further description of the specific embodiments of this utility model.

[0027] To address this, the present invention provides a drilling fixture for irregularly shaped pipe fittings, comprising a workpiece support platform 1, a pair of L-shaped side plates 2 on the front and rear sides of the workpiece support platform 1, a fixed base 3 for restricting the workpiece being processed on the top of the workpiece support platform 1, a drilling hole 4 for processing on the top of the fixed base 3, a drilling sleeve 5 on the drilling hole 4, a clamping mechanism 6 for further positioning the workpiece being processed on the top and sides of the fixed base 3, a supporting rib 7 for reinforcing the L-shaped side plates between the vertical portions of the front and rear L-shaped side plates 2, and a flipping clamping mechanism 8 on the right side of the vertical portions of the front and rear L-shaped side plates 2. The workpiece is restricted on the workpiece support platform 1 by the fixed base 3 and the flipping clamping mechanism 8, and the workpiece is further precisely positioned and restricted by the clamping mechanism 6.

[0028] like Figure 1 The clamping structure 6 includes a nut 9 welded to the drilling fixture of the irregular pipe fitting, and a tightening bolt 10 that cooperates with the nut 9. After the tightening bolt 10 is tightened, it will abut against the surface of the workpiece to further accurately position the drilling hole of the workpiece.

[0029] like Figure 1 The front L-shaped side plate 2 has a clamping mechanism 6 on the bottom surface of the vertical portion for positioning the workpiece.

[0030] like Figure 1 The workpiece support platform 1 and the two L-shaped side plates 2 are provided with a reinforcing support pipe 11 at the right-angle connection.

[0031] like Figure 1 The fixed base 3 is a U-shaped groove welded to the workpiece support platform 1. The opening of the U-shaped groove faces downward and is fixedly integrated with the workpiece support platform 1. Several holes of different sizes are opened around its body.

[0032] like Figure 1 , 3 The flipping and pressing mechanism 8 includes a flipping hinge 12 disposed on the right side of the vertical portion of the rear L-shaped side plate 2. The other end of the flipping hinge 12 is connected to the flipping pressing plate 14. It also includes a movable buckle 13 disposed on the surface of the vertical portion of the front L-shaped side plate 2. The movable buckle 13 and the flipping pressing plate 14 are positioned at the same horizontal level. When the flipping pressing plate 14 on the rear L-shaped side plate 2 is pressed onto the front L-shaped side plate after being horizontally rotated by the flipping hinge 12, the movable buckle 13 will lock the flipping pressing plate 14 to form a positioning restriction on the workpiece.

[0033] like Figure 1 The clamping mechanism 6, through further cooperation with the flipping clamping mechanism 8, can further restrict and position the internal workpiece of the vertical portion of the L-shaped side plate 2.

Claims

1. A drilling fixture for irregularly shaped pipe fittings, comprising a workpiece support platform (1), characterized in that: The workpiece support platform (1) is provided with a pair of L-shaped side plates (2) on the front and back sides. The workpiece support platform (1) is provided with a fixed base (3) for restricting the workpiece. The fixed base (3) is provided with a drilling hole (4) for processing. A drilling sleeve (5) is provided on the drilling hole (4). The top and side of the fixed base (3) are respectively provided with a clamping mechanism (6) for further positioning the workpiece. The vertical parts of the front and back L-shaped side plates (2) are provided with a support rib (7) for reinforcing the L-shaped side plates. The right side of the vertical parts of the front and back L-shaped side plates (2) is also provided with a flipping clamping mechanism (8). The workpiece is restricted on the workpiece support platform (1) by the fixed base (3) and the flipping clamping mechanism (8), and the workpiece is further precisely positioned and restricted by the clamping mechanism (6).

2. The drilling fixture for irregularly shaped pipe fittings according to claim 1, characterized in that: The clamping mechanism (6) includes a nut (9) welded to the drilling fixture of the irregular pipe fitting, and a tightening bolt (10) that cooperates with the nut (9). After the tightening bolt (10) is tightened, it will abut against the surface of the workpiece to further accurately position the drilling of the workpiece.

3. The drilling fixture for irregularly shaped pipe fittings according to claim 1, characterized in that: The bottom surface of the vertical portion of the front L-shaped side plate (2) is provided with a clamping mechanism (6) for positioning the workpiece.

4. The drilling fixture for irregularly shaped pipe fittings according to claim 1, characterized in that: The right-angle connection between the workpiece support platform (1) and the two L-shaped side plates (2) is also provided with a reinforcing support pipe (11).

5. The drilling fixture for irregularly shaped pipe fittings according to claim 1, characterized in that: The fixed base (3) is a U-shaped groove welded to the workpiece support platform (1). The opening of the U-shaped groove faces downward and is fixedly integrated with the workpiece support platform (1). It also has several holes of different sizes around its body.

6. The drilling fixture for irregularly shaped pipe fittings according to claim 1, characterized in that: The flipping and pressing mechanism (8) includes a flipping hinge (12) on the right side of the vertical part of the rear L-shaped side plate (2), the other end of which is connected to the flipping pressing plate (14). It also includes a movable buckle (13) on the surface of the vertical part of the front L-shaped side plate (2), and the movable buckle (13) and the flipping pressing plate (14) are based on the same horizontal position. When the flipping pressing plate (14) on the rear L-shaped side plate (2) is pressed onto the front L-shaped side plate after being horizontally rotated by the flipping hinge (12), the movable buckle (13) will lock the flipping pressing plate (14) to form a positioning restriction on the workpiece.

7. The drilling fixture for irregularly shaped pipe fittings according to claim 3, characterized in that: The clamping mechanism (6) can further restrict and position the internal workpiece of the vertical portion of the L-shaped side plate (2) by further cooperating with the flipping clamping mechanism (8).