A clamping mechanism for clamping parts in friction stir welding fixtures in proportion to their thickness.

Abstract

The invention relates to a clamping mechanism (10) that clamps parts of different thicknesses, which are to be welded together by friction stir welding, along an axis in proportion to their thicknesses, instead of on a fixed flat surface.

Description

1 TARIFF PARTS IN FRICTION STIR WELDING FIXTURES A method aimed at compressing them in proportion to their thickness. HANDCUFF MECHANISM Technical Area 5 The invention relates to a clamp used in friction stir welding (FSW) fixtures. It is related. The invention specifically concerns the welding of wall thicknesses together by friction stir welding. different parts, instead of a fixed flat surface, have an axis proportional to their thickness. It involves a clamping mechanism that compresses the contents. 10 State of the Art One of the welding methods frequently used in industry today is friction welding. It is a mixing welding method (friction stir welding - FSW). With FSW, two workpieces are welded together. It is a method in which the elements are joined together by friction without melting. In current technology, in fixtures where friction stir welding is performed, the parts are 15 Problems arise due to their thickness. Fixed onto the fixture. the tolerance allowed by FSW welding of the wall thicknesses of the parts (Two (excluding the difference in wall thickness of the part) in the FSW process malfunctions (penetration problem, leakage problem, FSW tool breakage, etc.) (problems) arise. This situation allows parts of different thicknesses to be used without problems. 20 In order for this to be possible, a proper compression mechanism must be established. This reveals its necessity. The research conducted on this topic in the literature refers to document number CN214322168U. It has been encountered. The relevant document relates to friction stir welding equipment. Available. 25 with a manual and threaded mechanism for fixing technical plates onto the fixture. The clamp is mentioned. However, specifically, the plates are connected by a piston and a movable... There is no mention of a mechanism that compresses using pressure plates. Another document encountered in relation to this topic is document number CN115673519A. The document in question concerns clamps for friction stir welding on inclined surfaces. The current technique involves clamping plates to inclined surfaces with pneumatically supported clamps at 30°. 2 It is mentioned that it is fixed in place. However, specifically, it is movable and rail-mounted. Compressing plates of different thicknesses using pressure plates that are pushed back and forth. No mechanism providing this is mentioned. In conclusion, due to the negative aspects described above and the current solutions being the subject of discussion... Due to its shortcomings, an improvement in the relevant technical field is necessary. 5 It has been made. The purpose of the invention The invention was created by drawing inspiration from existing situations and overcoming the aforementioned drawbacks. It aims to solve the problem. The main purpose of the invention is to weld meat together by friction stir welding. pieces of varying thickness, instead of being placed on a fixed flat surface, are positioned proportionally to their thicknesses. The goal is to create a clamping mechanism that compresses within the axis. Another purpose of the invention is to weld parts of different thicknesses using FSW welding. The aim is to eliminate potential penetration and leakage problems. To fulfill the purposes described above, the invention consists of 15 units mounted on a fixture. friction stir welding clamps workpieces of varying wall thicknesses to be welded. It is a clamping mechanism, the characteristic of which is;  Instead of a fixed flat surface, the thickness of the workpieces to be welded a clamp that allows it to be held within an axis in proportion to the axis. body and 20  Connected to the clamp body precisely in the middle and used for clamping. a pusher piston that provides the necessary power transmission to achieve It includes. The structural and characteristic features and all the advantages of the invention are given in the figures below. Thanks to the detailed explanation written with references to these figures, it becomes clearer. 25 This will be understood as such, and therefore the evaluation will also take these forms and detailed explanations into account. This should be done taking that into consideration. 3 Ways to Help Understand the Discovery Figure 1 shows the weld line and the appearance of the parts to be welded on the fixture. Figure 2 shows a general view of the clamping mechanism that is the subject of the invention. Figure 3 shows the clamping mechanism, the subject of the invention, in its free position. Figure 4 shows the clamping mechanism of the invention in the clamping position. 5 Figure 5 shows the clamping mechanism, the subject of the invention, and the parts to be welded together on one axis. It is a representative view on the surface. Explanation of Part References 1. Fixture 2. Workpiece 10 10. Clamping mechanism 11. Pusher piston 12. Clamp body 13. Top guide 14. Top rail 15 15. Top printing plate 16. Bottom pressure plate 17. Lower rail 18. Sub-guide A: The difference in thickness between the pieces is 20. B: Piston / pressure axis Detailed Description of Find 4 In this detailed explanation, the preferred clamping mechanism (10) of the invention is described. Their structures are explained solely to facilitate a better understanding of the subject. The invention clamp mechanism (10) consists of basically a clamp body (12), a pusher It consists of elements located on the piston (11) and the clamp body (12). The meat 5 will be welded together by friction stir welding on the fixture (1). In a clamping mechanism (10) that clamps workpieces of different thicknesses (2), the following is mentioned: The clamp body (12); the workpieces (2) to be welded are placed on a fixed flat surface instead of a fixed flat surface. This ensures that they are aligned with an axis in proportion to their thickness. Here The axis mentioned is the piston / pressure (B) axis. Clamp body (12) during welding 10 Ensuring that the movable parts on it are in the correct position against the incoming force. The clamp is the main element that provides this. However, the pusher piston is also part of the mechanism. (11) is connected to the clamp body (12) right in the middle and provides clamping. It provides the necessary power transmission. The clamping mechanism (10) of the invention, whose appearance is given in Figure 1, and the workpieces Instead of being placed on a flat plate, the parts are clamped along their central axes, thus the parts are 15 The difference in thickness between the two surfaces (A) is ensured to be distributed across both surfaces. In Figure 5 As can be seen, the workpieces are brought to the piston / pressure axis (B) in an accurate manner. It is positioned here. Since the tolerance is distributed to the top and bottom surfaces, the fsw process Materials with a thickness tolerance twice the acceptable level can also be welded with FSW. This is ensured. 20 In one application of the invention, the clamp mechanism (10) is on the clamp body (12). a top pressure plate (15) which applies pressure to the top surface of the workpiece (2) and the work It includes a lower pressure plate (16) that applies pressure to the lower ground of the part. together with the movable upper pressure plate (15) and the movable lower pressure plate (16) an upper rail (14) and a lower rail 25 which move and ensure that their positions are kept precise. (17) contains. Also, the upper pressure plate which moves on the upper rail (14). (15) is held in place by an upper guide (13) and a lower rail (14) that moves on it. It has a lower guide (18) that holds the printing plate (16). The working principle of the clamping mechanism (10) which is the subject of the invention is as follows: The upper 30 is moved back by means of hydraulic, electric or mechanical drive of the pusher piston (11). with the back and up / down movement of the printing plates (15) and lower printing plates (16) The gap between the aforementioned plates is opened. The workpieces will be welded manually or with the aid of a robot. (2) on the lower pressure plate (16) of the clamp body (12) located in the fixture (1). The workpieces are left (2) by any method belonging to previous techniques from the sides. By applying pressure, the gaps are removed and they are pressed against each other. The pusher piston (11) moves forward With its movement, the lower pressure plates (16) and the upper pressure plates (15) press the workpieces simultaneously. (2) starts to compress. After compression, the workpieces (2) are placed on a fixed flat surface 5 Instead, they are fixed within an axis in proportion to their thickness. Then, the previous FSW welding is performed using any method belonging to the techniques.

Claims

6 REQUESTS 1. Friction stir welding of two parts together on a fixture (1). a clamp that clamps workpieces of different thicknesses (2) its mechanism is (10) and its feature is;  The workpieces to be welded (2) should be placed on a fixed flat surface instead of 5 enabling them to be held within an axis in proportion to their thickness clamp body (12) and  Connected to the clamp body (12) right in the middle and tightening a pusher piston (11) that provides the necessary power transmission to provide It includes. 10 2. A clamping mechanism (10) conforming to Claim 1, the feature of which is; clamp body (12) is a top surface that applies pressure to the (2) top surface of the workpiece. a printing plate (15) and a subpressure plate that applies pressure to the substrate of the workpiece It contains plate (16).

3. A clamping mechanism (10) conforming to Claim 1, whose feature is; movable top pressure 15 moving together with the plate (15) and the movable lower pressure plate (16) and an upper rail (14) and a lower rail (17) which ensure that their positions are kept precise It includes.

4. A clamping mechanism (10) in accordance with claim 1, the feature of which is; upper rail (14) a top 20 that holds the moving top pressure plate (15) lower pressure plate (16) moving on guide (13) and lower rail (14) It includes a sub-guide (18) that ensures its retention.

5. A clamping mechanism (10) in accordance with Claim 1, the feature of which is; mentioned The axis is the piston / pressure axis (B).

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