A method and device for detecting stress of titanium alloy forgings

Abstract

The invention discloses a method and device for detecting stress of titanium alloy forgings, comprising: a base, a clamping device for fixing the titanium alloy forging is slidably arranged on the top of the base, a driving member for driving the clamping device to slide on the top of the base is arranged on the clamping device, a lifting device is arranged on the base, a pressing member for performing stress detection on the upper and lower ends of the titanium alloy forging is arranged on the lifting device, and a linkage device for synchronously driving the driving member to move when the lifting device drives the pressing member to lift and lower is arranged on the base; through the structural design of the linkage device in the invention, when the lifting device drives the pressing member to move, the linkage device can automatically adjust the movement of the driving member to move the clamping device accordingly, and the coordinated work of the pressing member and the clamping device can evenly apply force to the upper and lower ends and side ends of the titanium alloy forging, and this two-way pressure method can significantly enhance the stability and reliability of the test.

Description

Technical Field

[0001] The invention relates to the technical field of forging detection equipment, in particular to a titanium alloy forging stress detection method and device. Background Art

[0002] Titanium alloy forgings are parts made by heating the titanium alloy material to an appropriate temperature and then shaping the material through forging processes such as free forging and die forging. They are widely used in aerospace, automotive, medical, chemical and other fields. Stress testing of titanium alloy forgings is an important step to ensure their safety and reliability in use. Stress testing is the process of evaluating the internal stress that a material or structure is subjected to when it is subjected to force or load.

[0003] A Chinese patent with publication number CN117825164B discloses a titanium forging stress detection method and device, the structure of which includes a base plate 1, a connecting column fixedly connected to the top of the base plate 1, a track 1 fixedly connected to the inner side of the connecting column, a push rod 1 fixedly connected to the top of the connecting column, a pressing component fixedly connected to the top of the push rod 1, and a detection mechanism, the detection mechanism includes a push rod 2 fixedly connected to the top of the base plate 1, a base plate 2 fixedly connected to the top of the push rod 2, a slider 1 fixedly connected to the outer wall of the base plate 2, and by setting a pressure component, the device can not only detect the workpiece by extrusion, but also by stretching, thereby increasing the device's detection methods for the workpiece, improving the device's detection effect on the workpiece, and avoiding defects in the workpiece that cannot be detected.

[0004] However, the above-mentioned prior art has the following deficiencies: when performing stress testing on titanium alloy forgings, only a force on a plane can be applied to the titanium alloy forgings, but during the actual use of the titanium alloy forgings, the titanium alloy forgings will be subjected to external forces in multiple directions. Therefore, stress testing in a single direction cannot reflect the true stress state of the titanium alloy forgings under actual working conditions, resulting in the test results may not accurately reveal the stress distribution of the forgings under complex load conditions, which may lead to inaccurate judgment of the forging performance. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that when performing stress detection on titanium alloy forgings, only force on one plane can be applied to the titanium alloy forgings, but during the actual use of the titanium alloy forgings, the titanium alloy forgings will be subjected to external forces in multiple directions. Therefore, stress detection in a single direction cannot reflect the true stress state of the titanium alloy forgings under actual working conditions, resulting in that the detection results may not accurately reveal the stress distribution of the forgings under complex load conditions, which may lead to inaccurate judgment of the forging performance. A method and device for stress detection of titanium alloy forgings are provided.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a method and device for detecting stress of titanium alloy forgings, comprising: a base, a clamping device for fixing the titanium alloy forgings is slidably provided on the top of the base, a driving member for driving the clamping device to slide on the top of the base is provided on the clamping device, a lifting device is provided on the base, a top pressure member for performing stress detection on the upper and lower ends of the titanium alloy forgings is provided on the lifting device, and a linkage device for synchronously driving the driving member to move when the lifting device drives the top pressure member to rise and fall is provided on the base;

[0007] The linkage device comprises a fixed frame fixedly connected to the side end of the base, a ball bearing is slidably connected in the fixed frame, a linkage rod is slidably connected in the fixed frame, one end of the linkage rod passes through the fixed frame and the base and is fixedly arranged with the driving member, and one end of the lifting device is arranged in the fixed frame and is slidably connected with the fixed frame;

[0008] When the lifting device drives the top pressure piece to rise, the lifting device is arranged at one end of the fixed frame, pushing the ball to slide in the fixed frame, so that the ball pushes the linkage rod, activates the driving part, and drives the titanium alloy forging on the clamping device to move.

[0009] As a further solution of the present invention: the clamping device includes a lower clamping plate slidingly connected to the top of the base, the side end of the lower clamping plate is fixedly connected to a gear group, the input end of the gear group is fixedly connected to a rotating rod, one end of the rotating rod is rotatably connected to a hydraulic rod, the output end of the gear group is fixedly connected to a stud, the side end of the stud is threadedly connected to an upper pressure plate, the top of the upper pressure plate is plugged with a limiting rod, one end of the limiting rod passes through the upper pressure plate and is plugged with the lower clamping plate.

[0010] As a further solution of the present invention: the lifting device includes two hydraulic rods fixedly connected to the base, the movable end of the two hydraulic rods is fixedly connected to a sliding block, the side end of the fixed frame is fixedly connected to a sliding rail, the sliding block is slidably connected to the sliding rail, and one end of the sliding block passes through the sliding rail and the fixed frame, and is slidably connected to the fixed frame.

[0011] As a further solution of the present invention: one end of the sliding block is rotatably connected to a lifting assembly, one end of the lifting assembly is rotatably connected to a lifting plate, and a pressing piece is arranged on the lifting plate.

[0012] As a further solution of the present invention: the top pressure piece includes a mounting plate plugged into the lifting plate, one end of the mounting plate is threadedly connected with a pressure cone, and the pressure cone passes through the mounting plate.

[0013] As a further solution of the present invention: the driving member includes a guide rod fixedly connected to the inside of the base, a sleeve is sleeved on the outside of the guide rod, and the sleeve is slidably connected to the guide rod, and the sleeve is fixedly connected to the linkage rod.

[0014] As a further solution of the present invention: the side end of the sleeve is rotatably connected to a connecting rod, one end of the connecting rod is rotatably connected to a transmission rod, one end of the transmission rod is rotatably connected to a fixed rod, one end of the fixed rod is fixedly connected to the base, the other end of the transmission rod is rotatably connected to a push rod, one end of the push rod is rotatably connected to the lower clamping plate.

[0015] A method for detecting stress of a titanium alloy forging comprises the following steps:

[0016] S1. First, place the titanium alloy forging to be tested on the lower clamping plate through the gap between the two sets of upper clamping plates, then pass the limit rod through the upper clamping plate and plug it into the lower clamping plate to limit the position of the titanium alloy forging, and start the hydraulic rod 1 to drive the rotating rod to rotate, and drive the stud to rotate through the gear set, so that the upper clamping plate moves downward and cooperates with the lower clamping plate to clamp the titanium alloy forging;

[0017] S2. After that, the pressing cone is fixed on the mounting plate, and the two ends of the mounting plate are respectively inserted into the two sets of lifting plates, and the height of the pressing cone is adjusted by rotating the pressing cone so that the upper and lower ends of the titanium alloy forging abut against the pressing cone;

[0018] S3. Finally, start hydraulic rod 2 to make the sliding block slide upward or downward in the sliding rail, thereby driving the lifting assembly to move, so that the pressure cone applies external force to the lower end or upper end of the titanium alloy forging, and pushes the ball in the fixed frame to move during the movement of the sliding block, so that the ball pushes the linkage rod to move downward or upward in the fixed frame, thereby driving the sleeve to move downward or upward on the guide rod, and driving the transmission rod to rotate, so that the two sets of push rods pull or push the two sets of clamping devices inward to both sides, thereby applying outward pulling force or inward pushing force to both ends of the titanium alloy forging.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. In the present invention, through the structural design of the linkage device, when the lifting device drives the top pressure piece to move, the linkage device can automatically adjust the movement of the driving part so that the clamping device also moves accordingly. The top pressure piece and the clamping device work together to evenly apply force to the upper and lower ends and side ends of the titanium alloy forging. This two-way pressure method can significantly enhance the stability and reliability of the test and provide a deeper understanding of the behavior of the forging under complex stress conditions that may be encountered in practical applications;

[0021] 2. In the present invention, the double-group clamping device is used to ensure uniform clamping of the titanium alloy forging. This design avoids the stress test error caused by uneven clamping, thereby improving the accuracy of the test result. The driving member can achieve synchronous movement, so that the force applied to the titanium alloy forging can be evenly distributed, thereby ensuring the uniformity of stress application;

[0022] 3. In the present invention, the up and down movement of the pressing piece is controlled by the hydraulic system in the lifting device, which enables the pressing piece to apply uniform pressure on the upper and lower ends of the titanium alloy forging. The hydraulic system provides a smooth and controllable pressure application method, ensures the controllability of the applied force during the stress test, and can accurately measure the stress response of the forging. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of a titanium alloy forging stress detection method and device according to the present invention;

[0024] Figure 2 It is a structural cross-sectional view of a base in a titanium alloy forging stress detection method and device according to the present invention;

[0025] Figure 3 It is a structural schematic diagram of a clamping device in a titanium alloy forging stress detection method and device according to the present invention;

[0026] Figure 4 It is a structural schematic diagram of a lifting device in a titanium alloy forging stress detection method and device according to the present invention;

[0027] Figure 5 The present invention is a method and device for detecting stress of titanium alloy forgings. Figure 4 A schematic diagram of the structure at A;

[0028] Figure 6 It is a structural schematic diagram of a driving part in a titanium alloy forging stress detection method and device according to the present invention;

[0029] Figure 7 It is a structural schematic diagram of a linkage device in a titanium alloy forging stress detection method and device according to the present invention;

[0030] Figure 8 It is a structural schematic diagram of a linkage rod in a titanium alloy forging stress detection method and device described in the present invention.

[0031] In the figure: 1. base; 2. clamping device; 21. lower clamping plate; 22. gear set; 23. rotating rod; 24. hydraulic rod one; 25. stud; 26. upper pressure plate; 27. limit rod; 3. driving member; 31. guide rod; 32. sleeve; 33. connecting rod; 34. transmission rod; 35. fixing rod; 36. push rod; 4. lifting device; 41. slide rail; 42. hydraulic rod two; 43. sliding block; 44. lifting assembly; 45. lifting plate; 5. top pressure member; 51. mounting plate; 52. pressing cone; 6. linkage device; 61. fixing frame; 62. ball bearing; 63. connecting rod. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is an explanation of an embodiment of the present invention based on the overall structure of the present invention.

[0034] Reference Figures 1 to 8 In an embodiment of the present invention, a method and device for detecting stress of a titanium alloy forging include: a base 1, a clamping device 2 for fixing the titanium alloy forging is slidably provided at the top of the base 1, the clamping device 2 is provided with two groups, which are symmetrically distributed on both sides of the top of the base 1, each group of the clamping device 2 is provided with a group of driving members 3 for driving the clamping device 2 to slide on the top of the base 1, a lifting device 4 is provided on the base 1, the lifting device 4 is provided with two groups, which are rotationally symmetrically distributed on both sides of the base 1, the lifting device 4 is provided with a top pressure member 5 for performing stress detection on the upper and lower ends of the titanium alloy forging, the top pressure member 5 is provided with two groups, which are symmetrically distributed on the upper and lower ends of the titanium alloy forging, and the base 1 is provided with a linkage device 6 for synchronously driving the driving member 3 to move when the lifting device 4 drives the top pressure member 5 to rise and fall, and the linkage device 6 is provided with two groups, which are rotationally symmetrically distributed on both sides of the base 1;

[0035] The linkage device 6 includes a fixed frame 61 fixedly connected to the side end of the base 1, the fixed frame 61 is O-shaped, an O-shaped sliding groove is provided in the fixed frame 61, a ball 62 is slidably connected in the O-shaped sliding groove, and multiple groups of ball 62 are provided, which are evenly distributed in the O-shaped sliding groove. A linkage rod 63 is slidably connected in the fixed frame 61, and the upper and lower ends of the linkage rod 63 in the O-shaped sliding groove respectively abut against a group of ball 62, one end of the linkage rod 63 passes through the fixed frame 61 and the base 1, and is fixedly arranged with the driving member 3, one end of the lifting device 4 is arranged in the fixed frame 61, and is slidably connected to the fixed frame 61, and the upper and lower ends of the lifting device 4 in the O-shaped sliding groove respectively abut against a group of ball 62;

[0036] When the lifting device 4 drives the pressing part 5 to rise, the lifting device 4 is arranged at one end in the fixed frame 61, pushing a group of balls 62 abutting thereon to slide in the fixed frame 61, so that multiple groups of balls 62 slide in the O-shaped sliding grooves in the fixed frame 61, so that the balls 62 push the linkage rod 63 downward, activating the driving part 3, and driving the two groups of clamping devices 2 to move inward respectively, exerting inward pressure on the titanium alloy forgings on the two groups of clamping devices 2.

[0037] Reference Figure 3The clamping device 2 includes a lower clamping plate 21 slidably connected to the top of the base 1, and a gear set 22 is fixedly connected to the side end of the lower clamping plate 21. The gear set 22 is composed of a fixed shell and multiple sets of gears therein, wherein the fixed shell is fixedly connected to the side end of the lower clamping plate 21, and a rotating rod 23 is fixedly connected to the input end of the gear set 22. One end of the rotating rod 23 is rotatably connected to a hydraulic rod 24, and a stud 25 is fixedly connected to the output end of the gear set 22. Through the cooperation of multiple sets of gears with different numbers of teeth, the rotation speed of the stud 25 is greater than that of the rotating rod 23. The rotation speed of the rod 23 is such that when the rotating rod 23 drives the stud 25 to rotate through the gear set 22, the number of rotations of the stud 25 is greater than the number of rotations of the input end of the gear set 22 pushed by the rotating rod 23. The side end of the stud 25 is threadedly connected with an upper pressure plate 26, and a limit rod 27 is inserted at the top of the upper pressure plate 26. One end of the limit rod 27 passes through the upper pressure plate 26 and is inserted with the lower clamping plate 21. The width of the upper pressure plate 26 is smaller than the width of the lower clamping plate 21. There are multiple sets of through holes on the upper pressure plate, and multiple sets of through holes are opened on the lower clamping plate 21. The through hole and the through hole are matched with the limit rod 27. There are multiple groups of limit rods 27. Each group of limit rods 27 is embedded with a pressure sensor. When in use, the titanium alloy forging to be tested is first placed on the lower clamping plate 21 through the gap between the two groups of upper clamping plates 26, and then the multiple groups of limit rods 27 are passed through the through holes on the upper clamping plate 26 and plugged with the card holes corresponding to the through holes on the lower clamping plate 21 to limit the position of the titanium alloy forging, and start the hydraulic rod 24 to drive the hydraulic rod 24 to rotate. The movable rod 23 rotates, and the rotation speed is increased through the multiple sets of gears in the gear set 22, which drives the stud 25 to rotate, so that the upper pressure plate 26 moves downward, and cooperates with the lower clamping plate 21 to clamp the titanium alloy forging. When the two sets of clamping devices 2 move inward or outward respectively, the titanium alloy forging is compressed or stretched to perform a stress test. During the stress test, the limit rod 27 resists the titanium alloy forging and converts it into an electrical signal through the pressure sensor embedded in the limit rod 27 for further processing and analysis.

[0038] For this purpose, in the present technical solution, the pressure sensor embedded in the limit rod 27 adopts advanced existing technology, specifically a piezoelectric sensor. The sensor uses the principle of piezoelectric effect to accurately convert the mechanical stress applied thereto into an electrical signal. In this application, the piezoelectric sensor generates electric charges through the internal piezoelectric material when a force is applied. These charges are proportional to the applied stress. The charges are then converted into electrical signals for further processing and analysis.

[0039] The above scheme is adopted: the titanium alloy forging can be firmly clamped by the cooperation of the lower clamping plate 21 and the upper pressing plate 26 which are slidably connected to the top of the base 1. This clamping mechanism ensures the stability and positioning accuracy of the forging during the detection process, thereby avoiding the test error caused by the change of the forging position, and by adjusting the gap between the upper pressing plate 26 and the lower clamping plate 21, it can adapt to titanium alloy forgings of different sizes and shapes, thereby enhancing its applicability and versatility.

[0040] Reference Figure 4 The lifting device 4 includes a hydraulic rod 42 fixedly connected to the base 1, a sliding block 43 is fixedly connected to the movable end of the hydraulic rod 42, a slide rail 41 is fixedly connected to the side end of the fixed frame 61, the sliding block 43 is slidably connected to the slide rail 41, one end of the sliding block 43 passes through the slide rail 41 and the fixed frame 61, and is slidably connected to the fixed frame 61, and the upper and lower ends of the sliding block 43 in the O-shaped sliding groove are respectively abutted against a group of balls 62, one end of the sliding block 43 is rotatably connected to the lifting component 44, and one end of the lifting component 44 is rotatably connected to the lifting plate 45, and the lifting plate A slot is provided through the side end of 45, and two groups of slots are provided on each lifting plate 45. A top pressure piece 5 is inserted into the slot provided on the lifting plate 45. The lifting plate 45 is Z-shaped. The lifting assembly 44 is a mechanical device that realizes lifting movement through a plurality of rigid plates connected by hinges. Its core structure includes a plurality of straight plates, which are connected by hinge points to allow the plates to rotate around the hinge points. One group of straight plates is rotatably connected to the sliding block 43. By pushing this group of straight plates, the lifting assembly 44 drives the lifting plate 45 to realize lifting in the vertical direction.

[0041] By adopting the above scheme, the top pressure piece 5 can apply uniform pressure on the upper and lower ends of the titanium alloy forging through the lifting device 4, ensuring that the applied force is controllable during the stress test and the stress response of the forging can be accurately measured.

[0042] Reference Figure 5The top pressure piece 5 includes a mounting plate 51 plugged into the lifting plate 45. The mounting plate 51 is provided with two groups. The two groups of mounting plates 51 are symmetrically distributed at the upper and lower ends of the titanium alloy forging. The top of the mounting plate 51 is penetrated by a plurality of groups of threaded holes. The plurality of groups of threaded holes are evenly distributed at the top of the mounting plate 51. A pressing cone 52 is threadedly connected in the threaded hole, and the pressing cone 52 penetrates the mounting plate 51. The pressing cone 52 is composed of a group of threaded rods threadedly connected to the threaded holes on the mounting plate 51 and a conical pressure head. When installing, the pressing cone 52 is first threadedly connected to the mounting plate 51, and then one end of a group of mounting plates 51 is inserted into a group of slots on a group of lifting plates 45, and the mounting plate 51 is pushed toward the direction of this group of slots. The other end of this group of mounting plates 51 is aligned with a group of slots on another group of lifting plates 45, and then the mounting plate 51 is pushed toward the direction of this group of slots so that the two ends of the mounting plate 51 are respectively inserted into a group of slots on the two groups of lifting plates 45 to fix the mounting plate 51. After the two groups of pressing pieces 5 are respectively installed at the upper and lower ends of the titanium alloy forging, the pressing cones 52 are rotated to make the multiple groups of pressing cones 52 abut against the upper and lower ends of the titanium alloy forging respectively. When the lifting device 4 drives the pressing piece 5 to move upward, the pressing cone 52 at the lower end of the titanium alloy forging applies an external force to the titanium alloy forging. When the lifting device 4 drives the pressing piece 5 to move downward, the pressing cone 52 at the upper end of the titanium alloy forging applies an external force to the titanium alloy forging.

[0043] By adopting the above scheme: the pressure cone 52 is in direct contact with the forging, the applied external force can be efficiently transmitted to the surface of the titanium alloy forging, and accurate stress measurement can be achieved. The installation method of the top pressure piece 5 allows its position to be adjusted quickly and conveniently. It is fixed by cooperating with the slot on the lifting plate 45, which simplifies the installation and adjustment process of the top pressure piece 5.

[0044] Reference Figure 6 The driving member 3 includes a guide rod 31 fixedly connected to the inside of the base 1, a sleeve 32 is sleeved on the outer side of the guide rod 31, and a connecting ear is fixedly connected to the side end of the sleeve 32. Two groups of connecting ears are provided, which are symmetrically distributed on both sides of the sleeve 32, and the sleeve 32 is slidably connected to the guide rod 31. The sleeve 32 is fixedly connected to the linkage rod 63. One end of each group of connecting ears is rotatably connected to a group of linkage rods 33, and one end of the linkage rod 33 is rotatably connected to a transmission rod 34, and the transmission rod 34 is L-shaped. One end of the transmission rod 34 is rotatably connected to the fixed rod 35, one end of the fixed rod 35 is fixedly connected to the base 1, and the other end of the transmission rod 34 is rotatably connected to the push rod 36, one end of the push rod 36 is rotatably connected to the lower clamping plate 21. When the sleeve 32 moves up or down on the outside of the guide rod 31, the transmission rod 34 is pulled by the connecting rod 33, so that the transmission rod 34 rotates around the connection point with the fixed rod 35, thereby pulling or pushing the push rod 36, so that the two groups of clamping devices 2 move outward or inward synchronously.

[0045] The above solution is adopted: the synchronous movement of the clamping device 2 is achieved through the structures such as the guide rod 31, the sleeve 32 and the connecting rod 33. This synchronization ensures that the clamping device 2 uniformly applies external force to the titanium alloy forging.

[0046] The working principle of the present invention is as follows: first, the titanium alloy forging to be tested is placed on the lower clamping plate 21 through the gap between the two sets of upper pressing plates 26, and then multiple sets of limiting rods 27 are passed through the through holes on the upper pressing plate 26, and plugged with the clamping holes corresponding to the through holes opened on the lower clamping plate 21 to limit the position of the titanium alloy forging, and the hydraulic rod 24 is started to drive the rotating rod 23 to rotate, and the rotation speed is increased through multiple sets of gears in the gear set 22, driving the stud 25 to rotate, so that the upper pressing plate 26 moves downward, and cooperates with the lower clamping plate 21 to clamp and fix the titanium alloy forging, and then the pressing cone 52 is connected with the mounting plate 5 1 threaded connection, then insert one end of a set of mounting plates 51 into a set of slots on a set of lifting plates 45, and push the mounting plate 51 in the direction of this set of slots to align the other end of this set of mounting plates 51 with a set of slots on another set of lifting plates 45, then push the mounting plate 51 in the direction of this set of slots to insert both ends of the mounting plate 51 into a set of slots on the two sets of lifting plates 45, and fix the mounting plate 51. After the two sets of top pressing pieces 5 are respectively installed at the upper and lower ends of the titanium alloy forging, the pressing cones 52 are rotated to make the multiple sets of pressing cones 52 abut against the upper and lower ends of the titanium alloy forging, and then the hydraulic rod 2 42 is started to slide the sliding block 43 slides upward or downward in the slide rail 41, pushing a group of straight plates rotatably connected to the sliding block 43, so that the lifting assembly 44 drives the lifting plate 45 to achieve lifting in the vertical direction. When the lifting device 4 drives the top pressure piece 5 to move upward, the pressing cone 52 at the lower end of the titanium alloy forging applies an external force to the titanium alloy forging. When the lifting device 4 drives the top pressure piece 5 to move downward, the pressing cone 52 at the upper end of the titanium alloy forging applies an external force to the titanium alloy forging. When the top pressure piece 5 moves, the lifting device 4 is set at one end in the fixed frame 61, pushing a group of balls 62 abutting against it to slide in the fixed frame 61, so that multiple groups of balls 62 are in the fixed frame. The guide rod 31 slides in the O-shaped sliding groove in the guide rod 31, so that the ball 62 pushes the linkage rod 63 to move up or down, so that when the sleeve 32 moves up or down on the outside of the guide rod 31, the transmission rod 34 is pulled by the linkage rod 33, so that the transmission rod 34 rotates around the connection point with the fixed rod 35, thereby pulling or pushing the push rod 36, so that the two groups of clamping devices 2 move outward or inward synchronously, compressing or stretching the titanium alloy forging, and performing stress testing. During the stress test, the limit rod 27 resists the titanium alloy forging and converts the stress into an electrical signal through the pressure sensor embedded in the limit rod 27, providing further processing and analysis;Through the structural design of the linkage device 6, when the lifting device 4 drives the top pressure piece 5 to move, the linkage device 6 can automatically adjust the movement of the driving member 3 so that the clamping device 2 also moves accordingly. The top pressure piece 5 and the clamping device 2 work together to evenly apply force to the upper and lower ends and the side ends of the titanium alloy forging. This two-way pressure application method can significantly enhance the stability and reliability of the test, and more deeply understand the behavior of the forging under complex stress conditions that may be encountered in practical applications. The double-group clamping device 2 ensures uniform clamping of the titanium alloy forging. This design avoids stress test errors caused by uneven clamping, thereby improving the accuracy of the test results. The driving member 3 can achieve synchronous movement, so that the force applied to the titanium alloy forging can be evenly distributed, thereby ensuring the uniformity of stress application. The hydraulic system in the lifting device 4 controls the up and down movement of the top pressure piece 5, which enables the top pressure piece 5 to apply uniform pressure to the upper and lower ends of the titanium alloy forging. The hydraulic system provides a smooth and controllable pressure application method, ensures the controllability of the force applied during the stress test, and can accurately measure the stress response of the forging. ;

[0047] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A titanium alloy forging stress detection device, comprising: A base (1), characterized in that a clamping device (2) for fixing a titanium alloy forging is slidably provided at the top of the base (1), the clamping device (2) is provided with two groups, symmetrically distributed on both sides of the top of the base (1), the clamping device (2) is provided with a driving member (3) for driving the clamping device (2) to slide at the top of the base (1), the base (1) is provided with a lifting device (4), the lifting device (4) is provided with a pressing member (5) for performing stress detection on the upper and lower ends of the titanium alloy forging, and the base (1) is provided with a linkage device (6) for synchronously driving the driving member (3) to move when the lifting device (4) drives the pressing member (5) to rise and fall; The linkage device (6) comprises a fixed frame (61) fixedly connected to a side end of the base (1), a ball bearing (62) being slidably connected inside the fixed frame (61), a linkage rod (63) being slidably connected inside the fixed frame (61), one end of the linkage rod (63) passing through the fixed frame (61) and the base (1) and being fixedly arranged with the driving member (3), and one end of the lifting device (4) being arranged in the fixed frame (61) and being slidably connected with the fixed frame (61); When the lifting device (4) drives the pressing member (5) to rise, the lifting device (4) is arranged at one end in the fixed frame (61), pushing the ball (62) to slide in the fixed frame (61), so that the ball (62) pushes the linkage rod (63), activates the driving member (3), and causes the two sets of clamping devices (2) to move outward or inward synchronously, thereby compressing or stretching the titanium alloy forging; The clamping device (2) comprises a lower clamping plate (21) slidably connected to the top of the base (1); a gear group (22) is fixedly connected to the side end of the lower clamping plate (21); a rotating rod (23) is fixedly connected to the input end of the gear group (22); one end of the rotating rod (23) is rotatably connected to a hydraulic rod (24); a stud (25) is fixedly connected to the output end of the gear group (22); a side end of the stud (25) is threadedly connected to an upper pressure plate (26); a limit rod (27) is plugged into the top end of the upper pressure plate (26); a pressure sensor is embedded in each set of limit rods (27); one end of the limit rod (27) passes through the upper pressure plate (26) and is plugged into the lower clamping plate (21).

2. A titanium alloy forging stress detection device according to claim 1, characterized in that: The lifting device (4) comprises a second hydraulic rod (42) fixedly connected to the base (1); a sliding block (43) is fixedly connected to a movable end of the second hydraulic rod (42); a sliding rail (41) is fixedly connected to a side end of the fixed frame (61); the sliding block (43) is slidably connected to the sliding rail (41); one end of the sliding block (43) passes through the sliding rail (41) and the fixed frame (61) and is slidably connected to the fixed frame (61).

3. A titanium alloy forging stress detection device according to claim 2, characterized in that: One end of the sliding block (43) is rotatably connected to a lifting assembly (44), and one end of the lifting assembly (44) is rotatably connected to a lifting plate (45), and a pressing piece (5) is provided on the lifting plate (45).

4. A titanium alloy forging stress detection device according to claim 3, characterized in that: The pressing member (5) comprises a mounting plate (51) plugged into the lifting plate (45), one end of the mounting plate (51) being threadedly connected to a pressing cone (52), and the pressing cone (52) passes through the mounting plate (51).

5. A titanium alloy forging stress detection device according to claim 4, characterized in that: The driving member (3) comprises a guide rod (31) fixedly connected to the inside of the base (1); a sleeve (32) is sleeved on the outside of the guide rod (31); the sleeve (32) is slidably connected to the guide rod (31); and the sleeve (32) is fixedly connected to the linkage rod (63).

6. A titanium alloy forging stress detection device according to claim 5, characterized in that: The side end of the sleeve (32) is rotatably connected to a connecting rod (33), one end of the connecting rod (33) is rotatably connected to a transmission rod (34), one end of the transmission rod (34) is rotatably connected to a fixing rod (35), one end of the fixing rod (35) is fixedly connected to the base (1), and the other end of the transmission rod (34) is rotatably connected to a push rod (36), one end of the push rod (36) is rotatably connected to the lower clamping plate (21).

7. A detection method for a titanium alloy forging stress detection device according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1. First, the titanium alloy forging to be tested is placed on the lower clamping plate (21) through the gap between the two sets of upper pressing plates (26), and then the limit rod (27) passes through the upper pressing plate (26) and is plugged into the lower clamping plate (21) to limit the position of the titanium alloy forging, and the hydraulic rod (24) is started to drive the rotating rod (23) to rotate, and the stud (25) is driven to rotate through the gear set (22), so that the upper pressing plate (26) moves downward and cooperates with the lower clamping plate (21) to clamp the titanium alloy forging; S2. After that, the pressing cone (52) is fixed on the mounting plate (51), and the two ends of the mounting plate (51) are respectively inserted into the two sets of lifting plates (45), and the height of the pressing cone (52) is adjusted by rotating the pressing cone (52) so that the upper and lower ends of the titanium alloy forging are in contact with the pressing cone (52); S3. Finally, the hydraulic rod 2 (42) is started to make the sliding block (43) slide upward or downward in the slide rail (41), thereby driving the lifting assembly to move, so that the pressing cone (52) applies an external force to the lower end or upper end of the titanium alloy forging, and during the movement of the sliding block (43), the ball (62) in the fixed frame (61) is pushed to move, so that the ball (62) pushes the linkage rod (63) to move downward or upward in the fixed frame, thereby driving the sleeve (32) to move downward or upward on the guide rod (31), and driving the transmission rod (34) to rotate, so that the two sets of push rods (36) pull or push the two sets of clamping devices (2) to the sides respectively, thereby applying an outward pulling force or an inward pushing force to the two ends of the titanium alloy forging.

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