A flange positioning tool
Patent Information
- Application Number
- CN202521963659.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-12
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2035-09-12
AI Technical Summary
这些方式存在诸多弊端：首先，手动装夹效率低下，劳动强度大，难以适应现代化批量生产的需求；其次，装夹精度依赖于操作工人的经验，重复定位一致性差，容易导致加工孔位分布不均或同轴度超差，影响产品质量；再者，传统的专用夹具通用性极低，每更换一种规格的法兰盘产品就需要重新设计、制造一套新夹具，不仅增加了制造成本，也延长了生产准备周期
[0012]本实用新型的有益效果为：本申请通过气缸驱动结合齿轮齿条的精密传动，实现了对法兰盘工件的自动定心与同步夹紧，显著提高了装夹效率和定位精度，有效降低了操作者的劳动强度；独特的快换V型块与插销导套组合结构，使工装具备优异的通用性和柔性，能够快速适配不同规格的法兰盘，极大缩短了生产换型时间，降低了专用夹具的制造成本；紧凑的结构设计与导向限位机构保证了夹持过程的平稳性与可靠性，而集成式的防护罩与手柄机构则进一步提升了设备的安全性与操作便利性，综合解决了传统夹具效率低下、精度不足、适应性差等一系列问题。
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Figure CN224896912U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of mechanical tooling structures, and in particular to a flange positioning tooling. Background Technology
[0002] In the field of machining, flanges are common connecting parts, and the machining accuracy of their bolt holes or specific structures is crucial. Traditionally, positioning and clamping cylindrical workpieces like flanges typically involves manual clamping plates, three-jaw chucks, or simple V-block and bolt combinations. These methods have several drawbacks: First, manual clamping is inefficient and labor-intensive, making it difficult to meet the demands of modern mass production; second, clamping accuracy depends on the operator's experience, resulting in poor repeatability and inconsistency, easily leading to uneven distribution of machined holes or excessive coaxiality, affecting product quality; third, traditional dedicated fixtures have extremely low versatility, requiring a new fixture to be designed and manufactured for each flange specification, increasing manufacturing costs and extending production preparation time. Furthermore, while some existing pneumatic or hydraulic fixtures improve efficiency, their structures are often complex and bulky, their transmission mechanisms are not compact enough, and they lack quick changeover capabilities, making them inadequate for handling flexible production models with multiple varieties and small batches. Therefore, there is an urgent need for a flange positioning fixture that combines high precision, high efficiency, high versatility, and ease of operation to address the shortcomings of the existing technologies. Utility Model Content
[0003] The purpose of this invention is to address the shortcomings of existing technologies and provide a flange positioning fixture.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A flange positioning fixture, comprising: Guide seat; A gear and rack mechanism is provided on a guide seat, wherein the rack mechanism includes an upper rack and a lower rack; Connecting shaft and pull head for transmission connection; The first guide block and the second guide block are used for guiding and limiting. Connecting plates and limiting plates are used for structural connection and limiting; Connecting arms and V-blocks are used to clamp and position the flange. Cylinders are used to provide power; Handle mechanism for manual operation; The quick-change mechanism includes a quick-change plate, a first quick-change V-block, and a second quick-change V-block; Protective structures, including protective shields and protective covers.
[0005] Furthermore, the rack mechanism meshes with a gear and is connected to the pressure head via a rotating shaft drive.
[0006] Furthermore, the tooling also includes a limit ring and a positioning pin to limit the range of movement of the workpiece.
[0007] Furthermore, the quick-change mechanism enables rapid replacement via pins and guide sleeves.
[0008] Furthermore, it also includes springs and washers for cushioning and positioning.
[0009] Furthermore, it also includes connecting blocks, which include a first connecting block, a second connecting block, and a third connecting block, for structural connection and reinforcement.
[0010] Furthermore, the guide seat is equipped with a bearing for supporting the rotating shaft.
[0011] Furthermore, the cylinder is connected to the connecting arm via a sliding plate, driving the V-block to perform clamping or releasing actions.
[0012] The beneficial effects of this utility model are as follows: This application achieves automatic centering and synchronous clamping of flange workpieces through cylinder drive combined with precision transmission of gears and racks, significantly improving clamping efficiency and positioning accuracy, and effectively reducing the labor intensity of operators; the unique quick-change V-block and pin guide sleeve combination structure gives the tooling excellent versatility and flexibility, enabling it to quickly adapt to flanges of different specifications, greatly shortening production changeover time and reducing the manufacturing cost of special fixtures; the compact structural design and guide limit mechanism ensure the stability and reliability of the clamping process, while the integrated protective cover and handle mechanism further enhance the safety and ease of operation of the equipment, comprehensively solving a series of problems such as low efficiency, insufficient accuracy, and poor adaptability of traditional fixtures. Attached Figure Description
[0013] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0014] Figure 1 This is a perspective view of the present invention.
[0015] Figure 2 This is the front view of the present invention.
[0016] Figure 3 This is a cross-sectional schematic diagram of the present invention.
[0017] Figure 4 This is a side view of the present invention. Detailed Implementation
[0018] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0019] Reference Figures 1 to 4 A flange positioning fixture, which uses a guide seat 1 as a basic support structure, and a gear 2 is precisely installed inside it. The gear is engaged with the vertically arranged upper rack 3 and lower rack 4.
[0020] The connecting shaft is supported inside the guide seat 1 by a set of bearings 45. One end of the shaft is fixedly connected to the pull head 5, and the other end is connected to the gear 2 for transmission. The first guide block 6 and the second guide block 7 are respectively installed on both sides inside the guide seat 1 to provide precise guidance and support for the entire motion system.
[0021] The cylinder 50 serves as the core power source, and its piston rod is linked to the pull head 5 via a connecting mechanism. The upper rack 3 is rigidly connected to the connecting arm 10 via the second connecting block 26, while the lower rack 4 is connected to the connecting arm 10 on the other side via the third connecting block 28. Each connecting arm 10 has a V-block 11 installed at its end, which is used to directly clamp and position the workpiece. To accommodate different work sizes, the fixture is also equipped with a quick-change mechanism, which includes a quick-change plate 22, a first quick-change V-block 32, and a second quick-change V-block 35, and is precisely positioned via a locating pin 29.
[0022] The limiting system, consisting of a limiting plate 9 and a limiting ring 17, is used to precisely control the travel range of the moving parts. Protective covers 16 and 13 provide comprehensive safety protection for the moving parts. The handle mechanism 31 is positioned for easy operation and can be used for manual adjustment or emergency operation. The rotating shaft 30 and the pressure head 27 constitute an auxiliary clamping mechanism, with washers 12 and 21 and spring 48 providing the necessary preload and cushioning. The slide plate 18 is connected to the cylinder 50 to ensure stable power transmission, and the first connecting block 19 assists in connecting the various components. The pin 49 and guide sleeve 46 form a quick-change mechanism, allowing the tooling to quickly adapt to workpieces of different specifications.
[0023] During operation, cylinder 50 drives pull head 5 in linear motion, which in turn drives gear 2 to rotate via connecting shaft. The rotation of gear 2 simultaneously drives upper rack 3 upward and lower rack 4 downward, or vice versa, thereby driving V-blocks 11 on both sides to move synchronously in opposite directions via connecting arm 10, ultimately completing the automatic centering, clamping, or releasing operation of the workpiece. The entire motion process is precisely guided by first guide block 6 and second guide block 7, while limit plate 9 and limit ring 17 ensure the accuracy of the stroke endpoint position. The quick-change mechanism includes quick-change plate 22, first quick-change V-block 32, and second quick-change V-block 35, allowing for rapid replacement according to different workpiece specifications, significantly improving the adaptability and production efficiency of the equipment.
[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A flange positioning fixture, characterized in that, include: Guide seat (1); A gear (2) and rack mechanism are provided on the guide seat (1), the rack mechanism including an upper rack (3) and a lower rack (4). Connecting shaft and pull head (5) for transmission connection; The first guide block (6) and the second guide block (7) are used for guiding and limiting. Connecting plate (8) and limiting plate (9) are used for structural connection and limiting; Connecting arm (10) and V-block (11) for clamping and positioning flange; Cylinder (50), used to provide power; Handle mechanism (31) for manual operation; The quick-change mechanism includes a quick-change plate (22), a first quick-change V-block (32), and a second quick-change V-block (35); The protective structure includes a protective shield (16) and a protective cover (13).
2. The flange positioning fixture according to claim 1, characterized in that, The rack mechanism meshes with the gear (2) and is connected to the pressure head (27) via a rotating shaft (30).
3. The flange positioning fixture according to claim 1, characterized in that, It also includes a limit ring (17) and a positioning pin (29) to limit the range of movement of the workpiece.
4. The flange positioning fixture according to claim 1, characterized in that, The quick-change mechanism enables quick replacement via a pin (49) and a guide sleeve (46).
5. The flange positioning fixture according to claim 1, characterized in that, It also includes springs (48) and pads (12, 21) for cushioning and positioning.
6. The flange positioning fixture according to claim 1, characterized in that, It also includes connecting blocks, which include a first connecting block (19), a second connecting block (26) and a third connecting block (28) for structural connection and reinforcement.
7. The flange positioning fixture according to claim 1, characterized in that, The guide seat (1) is provided with a bearing (45) for supporting the rotating shaft (30).
8. The flange positioning fixture according to claim 1, characterized in that, The cylinder (50) is connected to the connecting arm (10) via the slide plate (18) and drives the V-block (11) to perform clamping or releasing actions.