A welding positioning and clamping fixture for E-shaped workpieces

Abstract

The utility model relates to a kind of welding positioning clamping tool of E-shaped workpiece, including bottom plate, positioning plate, limiting device;The limiting device is sequentially set on the bottom plate and is two groups;The limiting device limits workpiece;The installation position when the positioning plate limits workpiece positioning.Solved the positioning unstable adaptation of traditional E-shaped workpiece clamping tool, need accurate adjustable welding positioning clamping tool.

Description

Technical Field

[0001] This utility model relates to a welding positioning clamp for E-shaped workpieces, and more particularly to a welding positioning clamp for E-shaped workpieces. Background Technology

[0002] In the field of machining and welding, due to the special structure of E-shaped workpieces, the positioning accuracy directly affects the strength of the welded joint and the compatibility of the product assembly. Traditional E-shaped workpiece welding positioning fixtures suffer from unstable positioning and poor compatibility, making it difficult to meet the high-precision requirements of mass production.

[0003] Traditional clamping fixtures mostly use a single limiting structure, which can only simply fix E-shaped workpieces and cannot accurately limit their front-back and left-right positions. During the welding process, the workpiece is prone to displacement and offset, resulting in welding deviations and affecting product consistency. Moreover, the limiting structure is mostly a fixed design and cannot be fine-tuned according to the size of the E-shaped workpiece, resulting in poor adaptability. Custom-made clamping fixtures are required for different specifications of workpieces, increasing equipment investment costs.

[0004] Meanwhile, traditional clamping fixtures suffer from insufficient coordination between the positioning plate and the limiting components. The lack of a clear reference guide during workpiece installation necessitates repeated manual calibration, which is cumbersome, time-consuming, and reduces welding efficiency. Furthermore, the limiting components of some clamping fixtures are inconvenient to adjust and lack stability after fixing; welding vibrations can easily cause the limiting components to loosen, further exacerbating positioning deviations. With the increasingly widespread application of E-shaped workpieces in machinery, electronics, and other fields, the requirements for welding accuracy and production efficiency are constantly increasing. The shortcomings of traditional clamping fixtures have become a bottleneck restricting production quality. Therefore, developing a precise, adjustable, and easy-to-operate welding positioning clamping fixture for E-shaped workpieces has become an urgent need to improve welding quality and production efficiency. Utility Model Content

[0005] This application provides a welding positioning fixture for E-shaped workpieces, which solves the problem of unstable positioning and poor adaptability of traditional E-shaped workpiece fixtures in the prior art, requiring a precise and adjustable welding positioning fixture.

[0006] The technical solution adopted in this application is as follows.

[0007] A welding positioning fixture for an E-shaped workpiece includes a base plate, a positioning plate, and a limiting device; the limiting device is sequentially arranged on the base plate in two sets; the limiting device limits the workpiece; the positioning plate restricts the installation position of the workpiece during positioning.

[0008] As a further improvement to the above technical solution: The limiting device includes a first block, a second block, a third block, and a limiting member; the first block is disposed on the base plate; the second block is disposed on one side of the first block; the third block is disposed on the first block; the third block has a slot; the slot limits the front and rear position of the workpiece; the limiting member is threadedly connected to the second block.

[0009] The moving direction of the limiting member is towards the workpiece.

[0010] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages: 1. The synergistic design of the positioning plate and dual-set limiting devices completely solves the problem of unstable positioning in traditional single-limiting structures. The positioning plate provides a clear installation benchmark for the E-shaped workpiece, directly limiting its initial installation position and avoiding benchmark deviations during manual placement. Two sets of limiting devices are arranged sequentially along the workpiece welding direction. In each set, the slot of the third device precisely engages the protruding part of the E-shaped workpiece, fixing it from the front and back to prevent movement during welding. Simultaneously, the limiting component on the second device can be adjusted via threads to laterally tighten the workpiece, limiting its lateral displacement. This multi-dimensional fixing method, combining front and rear slot limiting, left and right thread tightening, and benchmark plate positioning, firmly locks the workpiece in the preset welding position, preventing displacement even under welding vibration. This completely eliminates problems such as weld joint misalignment and insufficient strength caused by positioning deviations, keeping the welding accuracy error of E-shaped workpieces in the same batch within a minimal range. This significantly improves product consistency and meets the stringent assembly compatibility requirements of the mechanical and electronic fields.

[0011] 2. The adjustable limiting device of the new clamping fixture overcomes the limitations of poor adaptability of traditional fixed limiting structures. The limiting component is threadedly connected to the second block; rotating the limiting component adjusts its extension length to accommodate E-shaped workpieces of different widths. The slot of the third block can be adapted to the size of the protruding part of the E-shaped workpiece, and combined with the lateral adjustment of the limiting component, it can cover the inspection needs of various specifications of E-shaped workpieces. Unlike traditional clamping fixtures, there is no need to customize a special clamping fixture for each specification of E-shaped workpiece. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the welding positioning clamp for the E-shaped workpiece in this utility model.

[0013] Figure 2 This is a schematic diagram of the welding positioning clamp for the E-shaped workpiece in this utility model.

[0014] In the diagram: 1. Base plate; 2. Positioning plate; 3. Limiting device; 31. First piece; 32. Second piece; 33. Third piece; 34. Limiting component; 331. Slot. Detailed Implementation

[0015] This application provides a welding positioning fixture for E-shaped workpieces, which solves the problem of unstable positioning and poor adaptability of traditional E-shaped workpiece fixtures in the prior art, requiring a precise and adjustable welding positioning fixture.

[0016] The technical solution in this application embodiment is to solve the above problems, and the overall idea is as follows: To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0017] Base plate 1 and reference positioning structure: Base plate 1 is made of high-strength steel plate, and the surface is ground flat to ensure flatness; positioning plate 2 is fixed in the middle of base plate 1, and a reference plane is milled on the surface of positioning plate 2. The reference plane of positioning plate 2 is parallel to the welding direction of the workpiece and is used to guide the initial installation position of E-shaped workpiece; two sets of limiting devices 3 are installed on base plate 1 along the welding direction. The distance between the two sets of devices is adapted to the length of the workpiece to form a "double-point limiting" structure.

[0018] Assembly of limiting device 3: Each set of limiting device 3 includes a first block 31, a second block 32, a third block 33 and a limiting member 34; the first block 31 is vertically fixed on the base plate 1, the second block 32 is welded to one side, and the third block 33 is fixed to the top with bolts; the third block 33 has a slot 331 on the side facing the workpiece, and the shape of the slot 331 is adapted to the protruding part of the E-shaped workpiece; the second block 32 has a threaded hole, and the limiting member 34 is threadedly connected in the threaded hole, with the end of the limiting member 34 facing the workpiece, and its extension length can be adjusted by rotating the handle.

[0019] Auxiliary adaptation structure: The third block 33 is connected to the first block 31 by detachable bolts. The third block 33 of different slot 331 specifications can be replaced according to the size of the protruding part of the E-shaped workpiece. Multiple sets of bolt holes are reserved on the base plate 1. The installation position of the positioning plate 2 and the limiting device 3 can be finely adjusted to further adapt to E-shaped workpieces of different lengths.

[0020] Accuracy verification: Welding tests are performed on the two types of workpieces after debugging to measure the positional deviation of the weld joints, ensuring that the error is controlled within the allowable range and that the product consistency meets the assembly requirements. Workpiece loading and reference positioning: The operator holds a small E-shaped bracket, places one side of it against the reference surface of the positioning plate 2 on the base plate 1, aligns the protruding part of the workpiece with the slots 331 of the two sets of limiting devices 3, and gently pushes the workpiece until the protrusion is inserted into the slots 331, thus completing the initial positioning.

[0021] Multi-dimensional limiting and fixing: First, rotate the handle of the limiting member 34 near the welding end to make the limiting member 34 press against the side wall of the welding end of the workpiece; then rotate the limiting member 34 at the other end to press against the non-welding end of the workpiece; during the process, observe the fit between the workpiece and the slot 331 to ensure there is no gap and avoid workpiece displacement due to uneven force; after fixing, check whether the workpiece is stable and without loosening or deformation.

[0022] Welding and blanking: Start the welding equipment to weld the protrusions on the side of the workpiece. There is no need to monitor the positioning status of the workpiece during the welding process. After welding is completed, rotate the two limiting parts 34 in the opposite direction and take out the workpiece and put it into the finished product basket. Repeat the above steps for subsequent workpieces without the need for re-adjustment.

[0023] Before welding each day, check whether the thread of the limit component 34 is smooth. If there is any jamming, apply lubricant. Clean the welding slag or impurities in the slot 331 to avoid affecting the workpiece engagement accuracy.

[0024] The fixing bolts of the positioning plate 2 and the limiting device 3 are checked weekly to prevent loosening that could lead to positioning deviation; sampling positioning tests are conducted on standard workpieces to calibrate the limiting accuracy.

[0025] Replace the severely worn end of the limit component 34 monthly based on the wear condition of the workpiece; prepare the third piece 33 of the required specifications in advance according to the production plan to shorten the specification changeover time.

[0026] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0027] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A welding positioning fixture for an E-shaped workpiece, characterized in that, It includes a base plate (1), a positioning plate (2), and a limiting device (3); the limiting device (3) is arranged sequentially on the base plate (1) in two sets; the limiting device (3) limits the workpiece; the positioning plate (2) restricts the installation position of the workpiece during positioning.

2. The welding positioning fixture for the E-shaped workpiece as described in claim 1, characterized in that, The limiting device (3) includes a first block (31), a second block (32), a third block (33), and a limiting member (34); the first block (31) is disposed on the base plate (1); the second block (32) is disposed on one side of the first block (31); the third block (33) is disposed on the first block (31); a slot (331) is provided on the third block (33); the slot (331) restricts the front and rear position of the workpiece; the limiting member (34) is threadedly connected to the second block (32).

3. The welding positioning fixture for the E-shaped workpiece as described in claim 2, characterized in that, The moving direction of the limiting member (34) is toward the workpiece.

Images