A device for rapid marking and positioning of bench work
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 曹宁
- Filing Date
- 2025-11-10
- Publication Date
- 2026-07-24
Smart Images

Figure CN224544546U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of positioning device technology, and in particular to a device for quick marking and positioning by fitters. Background Technology
[0002] In the field of fitter's machining, scribing is an extremely important step, as its accuracy directly affects the precision and quality of subsequent machining operations. By scribing, the machining positions, dimensions, and shapes can be accurately marked on the workpiece, providing precise guidance for subsequent machining operations such as cutting, drilling, and grinding, ensuring that the workpiece ultimately meets design requirements.
[0003] However, in the actual scribing and positioning process, there are many problems with the clamping and positioning of the workpiece. The traditional clamping and positioning method requires the fitter to continuously push the workpiece against the iron with one hand. This not only reduces work efficiency, but also easily introduces human error during repeated adjustments, resulting in poor positioning accuracy and making it difficult to meet the processing requirements of high-precision workpieces. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies where repeated adjustments can easily introduce human error, and to propose a device for quick marking and positioning by fitters.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: A device for quick marking and positioning in fitter's work includes an L-shaped support block, which is used to fit against the workpiece to provide support for the workpiece, and both ends of the L-shaped support block extend outward to expand the support range. The L-shaped backing has two limiting grooves, and a directional slider slides in each of the two limiting grooves. The L-shaped backing has four sliding grooves, which are connected to the two limiting grooves respectively. Each of the two directional sliders has a limiting sliding post fixed in it. The two limiting sliding posts slide in the four sliding grooves respectively. Each of the two limiting sliding posts has a clamping block fixed to its side end for clamping the workpiece. To facilitate the positioning of the clamping blocks that hold the workpiece, a set of positioning components is provided in each of the two limiting slide columns. The two sets of positioning components are used to fix the two clamping blocks to the L-shaped backing block.
[0006] In one possible design, each of the clamping assemblies includes a threaded groove formed at the end of the limiting slide away from the clamping block, a screw is threadedly connected to the threaded groove, and a screw ring is fixed to the side end of the screw. The screw is moved linearly within the threaded groove by turning the screw ring, thereby causing the screw ring to fit against the side end of the L-shaped iron, thus fixing the position of the directional slider, the limit slider, and the clamping block.
[0007] In one possible design, a gap is formed between the limiting slide post and the L-shaped backing block, the gap being used to prevent the screw ring and the L-shaped backing block from contacting the limiting slide post before they are engaged.
[0008] In one possible design, an anti-slip ring is fixed to the surface of the screw ring.
[0009] In one possible design, the adjacent ends of the two clamping blocks are provided with anti-slip texture.
[0010] In one possible design, both of the limiting slides are fixed to the two directional sliders by welding.
[0011] In this application, the screw is driven to move linearly in the threaded groove by turning the screw ring, thereby causing the screw ring to fit against the side end of the L-shaped iron, thus fixing the position of the directional slider, the limit slider and the clamping block.
[0012] Beneficial effects: The device for quick marking and positioning of workpieces described in this utility model achieves rapid workpiece positioning through a unique structural design. The L-shaped support can quickly conform to the workpiece, providing stable initial support. Its outward-extending design at both ends allows the device to quickly adapt to workpieces of different sizes without the need for complex adjustments. In this utility model, the device for quick marking and positioning for fitters, when the screw ring is turned, the screw moves precisely in a straight thread within the threaded groove, causing the screw ring to fit tightly against the side end of the L-shaped iron, thereby firmly fixing the positions of the directional slider, the limiting slider, and the clamping block. This precise fixing method can effectively prevent workpiece displacement caused by loose clamping blocks during processing, ensuring the stability of the workpiece during the marking process, and making the marking and positioning more accurate. In this invention, the device is designed with ease of operation in mind. The anti-slip ring is fixed to the surface of the screw ring, increasing the friction between the operator's hand and the screw ring, making it easier and more stable for the operator to turn the screw ring, reducing slippage and simplifying the operation. Attached Figure Description
[0013] Figure 1 This is a front perspective three-dimensional schematic diagram of a device for rapid marking and positioning in fitter work, as proposed in this utility model. Figure 2 This is a partial three-dimensional schematic diagram of a device for rapid marking and positioning in fitter work, as proposed in this utility model. Figure 3 This is a partial cross-sectional view of a device for quick marking and positioning in fitter work, as proposed in this utility model.
[0014] In the diagram: 1. L-shaped backing; 2. Limiting groove; 3. Slide groove; 4. Directional slider; 5. Limiting slide post; 6. Tightening ring; 7. Anti-slip ring; 8. Screw; 9. Threaded groove; 10. Clamping block; 11. Gap. Detailed Implementation
[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0016] In one embodiment: Refer to Figures 1-3 A quick marking and positioning device for fitters, applied in the field of positioning device technology, includes an L-shaped support block 1, which forms the basic support component. Its unique L-shaped design allows it to closely fit the workpiece, providing stable support. Both ends of the L-shaped support block 1 extend outwards, effectively expanding the support range and enabling the device to adapt to workpieces of different sizes, enhancing its versatility. Inside the L-shaped support block 1, two limiting grooves 2 are provided, each located in a suitable position to restrict the movement trajectory of the directional slider 4, ensuring it can only slide in a specific direction. Simultaneously, the L-shaped support block 1 also has four sliding grooves 3, each connected to one of the two limiting grooves 2, providing a channel for the sliding of the limiting sliding column 5. The directional slider 4 is slidably installed in the limiting groove 2. The two limiting sliders 5 are respectively fixed in the two directional sliders 4, and the limiting sliders 5 can slide freely in the sliding groove 3. When the directional slider 4 moves in the limiting groove 2, it will drive the limiting sliders 5 to move synchronously in the sliding groove 3. At the side ends of the two limiting sliders 5, there are clamping blocks 10. The clamping blocks 10 are used to clamp the workpiece. By moving the directional slider 4 and the limiting sliders 5, the position of the clamping blocks 10 can be flexibly adjusted to adapt to the clamping requirements of workpieces of different shapes and sizes. To achieve precise positioning of the clamping block 10, positioning components are installed within the two limiting slide columns 5. Each positioning component includes a threaded groove 9 located at the end of the limiting slide column 5 furthest from the clamping block 10. A screw 8 is threadedly connected to the threaded groove 9, and a screw ring 6 is fixed to the side end of the screw 8. When it is necessary to fix the position of the clamping block 10, the operator can turn the screw ring 6. Since the screw ring 6 is fixedly connected to the screw 8, the rotation of the screw ring 6 will drive the screw 8 to move linearly within the threaded groove 9. As the screw 8 moves, the screw ring 6 gradually approaches the side end of the L-shaped support 1 until the screw ring 6 is tightly fitted against the side end of the L-shaped support 1. At this point, the positions of the directional slider 4, the limiting slide column 5, and the clamping block 10 are fixed, thereby achieving stable clamping of the workpiece. A gap 11 is specially designed between the limiting slide post 5 and the L-shaped iron block 1. This gap 11 plays an important role in preventing the screw ring 6 from contacting the limiting slide post 5 before it is in contact with the side end of the L-shaped iron block 1, thus avoiding interference caused by contact and ensuring that the screw ring 6 can smoothly fit into the L-shaped iron block 1 to effectively fix the position of the clamping block 10.
[0017] In another embodiment: Refer to Figures 1-3 An improvement upon Example 1 is made as follows: To enhance operational convenience and stability, an anti-slip ring 7 is fixed to the surface of the screw ring 6. The presence of the anti-slip ring 7 increases the friction between the operator's hand and the screw ring 6, making it easier and more stable for the operator to turn the screw ring 6, reducing the likelihood of slippage and improving operational efficiency and accuracy. Simultaneously, anti-slip textures are provided at the adjacent ends of the two clamping blocks 10. When the clamping blocks 10 hold the workpiece, the anti-slip textures increase the friction between the clamping blocks 10 and the workpiece, preventing the workpiece from sliding or shifting during processing, ensuring stable clamping of the workpiece, and guaranteeing processing accuracy and quality. When using this device for scribing and positioning, first place the workpiece on the L-shaped support 1, ensuring a tight fit between the workpiece and the support 1, which provides support. Depending on the shape and size of the workpiece, slide the directional slider 4. This slider 4 moves the limiting slider 5 and the clamping block 10, adjusting the position of the clamping block 10 so it is close to the workpiece. Once the clamping block 10 is in the appropriate position, turn the screw ring 6, causing the screw 8 to move within the threaded groove 9. This brings the screw ring 6 into contact with the side of the L-shaped support 1, fixing the position of the clamping block 10 and stably holding the workpiece. At this point, the operator can scribing the workpiece. After scribing, turn the screw ring 6 in the opposite direction to separate it from the L-shaped support 1, releasing the clamping block 10. Slide the directional slider 4 to move the clamping block 10 away from the workpiece, allowing the workpiece to be removed, completing the entire operation.
[0018] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.
[0019] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A device for rapid scribing and positioning by a bench worker, which is used for rapidly clamping and positioning a workpiece during scribing and positioning, and is characterized in that Comprising: An L-shaped supporting iron (1), which is used to fit the workpiece to provide support for the workpiece, and both ends of the L-shaped supporting iron (1) extend outward to expand the support range; Two limiting grooves (2) are formed in the L-shaped supporting iron (1), and direction sliders (4) are slidably arranged in the two limiting grooves (2). Four sliding grooves (3) are formed in the L-shaped supporting iron (1), and the four sliding grooves (3) are respectively communicated with the two limiting grooves (2). Limiting sliding columns (5) are fixed in the two direction sliders (4), and the two limiting sliding columns (5) are respectively slidably arranged in the four sliding grooves (3). Clamping blocks (10) for clamping the workpiece are fixed to the side ends of the two limiting sliding columns (5); In order to facilitate the positioning of the clamping blocks (10) for clamping the workpiece, a set of positioning components are arranged in each of the two limiting sliding columns (5), and the two sets of positioning components are respectively used to fixedly connect the two clamping blocks (10) with the L-shaped supporting iron (1).
2. The device for rapid scribing and positioning of a bench worker according to claim 1, wherein Each set of the positioning components includes a threaded groove (9) formed at one end of the limiting sliding column (5) away from the clamping block (10), a screw rod (8) is threadedly connected in the threaded groove (9), and a screwing ring (6) is fixed to the side end of the screw rod (8); Wherein, by screwing the screwing ring (6), the screw rod (8) is driven to perform a threaded linear movement in the threaded groove (9), so as to drive the screwing ring (6) to fit against the side end of the L-shaped supporting iron (1), thereby fixing the positions of the direction slider (4), the limiting sliding column (5) and the clamping block (10).
3. The device for rapid scribing and positioning of a bench worker according to claim 2, wherein A gap (11) is formed between the limiting sliding column (5) and the L-shaped supporting iron (1), and the gap (11) is used to prevent contact between the screwing ring (6) and the limiting sliding column (5) before the screwing ring (6) fits against the L-shaped supporting iron (1).
4. The device for rapid scribing and positioning of a bench worker according to claim 3, wherein An anti-slip ring (7) is fixed to the surface of the screwing ring (6).
5. The device for rapid scribing and positioning of a bench worker according to claim 1, wherein, Anti-slip patterns are provided at the ends of the two clamping blocks (10) close to each other.
6. The device for rapid scribing and positioning of a benchworker according to claim 1, wherein The two limiting sliding columns (5) are fixed in the two direction sliders (4) by welding.