T-shaped workpiece laser welding seam tension test tool

Abstract

The utility model discloses a T-shaped workpiece laser welding seam tension test tool, which is applied to the technical field of workpiece tension tests and releases stored energy through a second spring and enables a fixing rod to drive a top plate to reset, so that the top plate pushes a fractured workpiece to move, and the workpiece finally pops up to a connecting plate from a through groove. The popped-out workpiece collides with a rubber plate, the popped-out workpiece can be intercepted and buffered through a baffle and the rubber plate, the bounce phenomenon of the popped-out workpiece is avoided, a mounting rod is driven by positioning wheels to move into a sliding groove, a first spring is compressed to keep energy storage, and two sets of positioning wheels form clamping force on the T-shaped workpiece to fix the T-shaped workpiece; and the displacement is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of workpiece tensile testing technology, and specifically relates to a tensile testing fixture for laser welded seams of T-shaped workpieces. Background Technology

[0002] Laser welding is characterized by high precision, small deformation, and high efficiency. At the same time, laser-welded plates have good surface formation and high smoothness, which can significantly improve the impact resistance and fatigue resistance of the vehicle body structure. Therefore, the inspection of laser welding quality is an important part of quality control.

[0003] The tensile test of laser weld seams on T-shaped workpieces is a testing method used to evaluate the quality of laser welding on T-shaped workpieces. Its purpose is to verify the strength and reliability of the weld seam.

[0004] Currently, Chinese utility model patent CN206891861U discloses a tensile testing fixture for laser-welded seams of T-shaped workpieces, relating to the field of mechanical manufacturing. The tensile test requires breaking the workpiece, but the aforementioned technology has some shortcomings:

[0005] 1. When a T-shaped workpiece breaks, part of the workpiece will be moved away with the lower chuck of the tensile testing machine, while the other part will remain in the T-shaped cavity. It is not convenient to automatically remove the broken workpiece, and manual cleaning is required.

[0006] Second: It is not convenient to pre-fix the T-shaped workpiece. When fixing the T-shaped workpiece with the tensile testing machine chuck, it is easy to cause the T-shaped workpiece to shift. Therefore, it needs to be improved. Utility Model Content

[0007] The purpose of this utility model is to provide a tensile testing fixture for laser welding seams of T-shaped workpieces. Its advantages are that it facilitates the pre-fixation of the workpiece and the automatic cleaning and collection of broken workpieces.

[0008] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a tensile testing fixture for laser welding seams of T-shaped workpieces, comprising a fixture base, a T-shaped workpiece body disposed inside the fixture base, a top plate disposed inside the fixture base, a through groove formed on the inner wall of the fixture base, a connecting plate disposed on one side of the fixture base, and a limiting component disposed on the inner wall of the fixture base; the limiting component includes a sliding groove formed on the inner wall of the fixture base, an installation rod slidably connected to the inner wall of the sliding groove, a positioning wheel rotatably connected to one end of the installation rod via a rotating shaft, a first spring fixedly connected to the other end of the positioning wheel, and two positioning wheels symmetrically arranged.

[0009] The above technical solution facilitates the automatic ejection of broken workpieces from the fixture seat onto the connecting plate.

[0010] The present invention is further configured such that: the clamp base includes a connecting rod, an anti-detachment head and a T-slot, the top of the clamp base is fixedly connected to the connecting rod, and the top of the connecting rod is fixedly connected to the anti-detachment head.

[0011] The above technical solution can prevent the clamp seat from detaching from the upper clamp of the tensile testing machine by using the anti-detachment head.

[0012] The present invention is further configured such that a T-shaped groove is provided on the inner wall of the fixture seat, and the T-shaped groove is connected to the through groove.

[0013] The above technical solution facilitates the ejection of broken workpieces.

[0014] The present invention is further configured such that the top plate includes a fixing rod, a pull block, a second spring and a limiting rod, a fixing rod is fixedly connected to one side of the top plate, one end of the fixing rod passes through one side of the clamp seat and is fixedly connected to the pull block, a second spring is provided on the outer side of the fixing rod, a limiting rod is slidably connected to the inner wall of the clamp seat, and one end of the limiting rod is fixedly connected to one side of the top plate.

[0015] The above technical solution facilitates the movement of the top plate by using the fixing rod.

[0016] The present invention is further configured such that one end of the second spring is fixedly connected to one side of the top plate, and the other end of the second spring is fixedly connected to the inner wall of the T-slot.

[0017] The above technical solution facilitates the automatic reset of the top plate by the fixing rod.

[0018] The present invention is further configured such that the connecting plate includes a baffle, a rubber plate, a locking block, a locking groove, a threaded hole and a bolt, the top of the connecting plate is fixedly connected to the baffle, and a rubber plate is provided on one side of the baffle.

[0019] The above technical solution allows for stable movement of the top plate.

[0020] The present invention is further configured such that a locking block is fixedly connected to one side of the connecting plate, a locking groove is provided on the inner wall of the clamp seat, and threaded holes are provided on both the locking block and the inner wall of the clamp seat, with bolts threadedly connected to the inner wall of the threaded holes.

[0021] The above technical solution is adopted:

[0022] The present invention is further configured such that the mounting rod includes a positioning block and a positioning groove, a positioning block is fixedly connected to the outer side of one end of the mounting rod, a positioning groove is provided on the inner wall of the clamp seat, and the positioning block is slidably connected to the positioning groove.

[0023] The above technical solution is adopted:

[0024] In summary, this utility model has the following beneficial effects:

[0025] 1: When the T-shaped workpiece breaks, the second spring releases its stored energy and causes the fixing rod to drive the top plate to reset. The top plate pushes the broken workpiece to move, and the workpiece is finally ejected from the through slot. The ejected workpiece is intercepted and buffered by the baffle and rubber plate, eliminating the need for manual cleaning of the broken workpiece.

[0026] 2: Place the T-shaped workpiece body into the fixture seat and press the two sets of positioning wheels. The positioning wheels are pressed and drive the mounting rod to move into the slide groove. At this time, the first spring is compressed and maintains energy storage. The first spring can make the two sets of positioning wheels form a clamping force, thereby pre-fixing the T-shaped workpiece body and preventing it from shifting. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0028] Figure 2 This is a schematic diagram of the T-groove and groove of this utility model;

[0029] Figure 3 This is a utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0030] Figure 4 This is a utility model Figure 2 Enlarged schematic diagram of the structure at point B.

[0031] Reference numerals: 1. Fixture base; 101. Connecting rod; 102. Anti-detachment head; 103. T-slot; 2. T-shaped workpiece body; 3. Top plate; 301. Fixing rod; 302. Pull block; 303. Second spring; 304. Limiting rod; 4. Through slot; 5. Connecting plate; 501. Baffle; 502. Rubber plate; 503. Locking block; 504. Locking groove; 505. Threaded hole; 506. Bolt; 6. Slide groove; 7. Mounting rod; 701. Positioning block; 702. Positioning groove; 8. Positioning wheel; 9. First spring. Detailed Implementation

[0032] The present invention will be further described in detail below with reference to the accompanying drawings.

[0033] Example 1:

[0034] refer to Figure 1 , Figure 2 and Figure 4 A tensile testing fixture for laser welding seams of T-shaped workpieces includes a fixture base 1, a T-shaped workpiece body 2 is disposed inside the fixture base 1, a top plate 3 is disposed inside the fixture base 1, a through groove 4 is opened on the inner wall of the fixture base 1, and a connecting plate 5 is disposed on one side of the fixture base 1.

[0035] The clamp base 1 includes a connecting rod 101, an anti-detachment head 102, and a T-slot 103. The connecting rod 101 is fixedly connected to the top of the clamp base 1, and the anti-detachment head 102 is fixedly connected to the top of the connecting rod 101.

[0036] The inner wall of the fixture seat 1 is provided with a T-shaped groove 103, which is connected to the through groove 4.

[0037] The top plate 3 includes a fixing rod 301, a pull block 302, a second spring 303, and a limiting rod 304. The fixing rod 301 is fixedly connected to one side of the top plate 3. One end of the fixing rod 301 passes through the clamp seat 1 and is fixedly connected to the pull block 302. The second spring 303 is provided on the outside of the fixing rod 301. The limiting rod 304 is slidably connected to the inner wall of the clamp seat 1. One end of the limiting rod 304 is fixedly connected to one side of the top plate 3.

[0038] One end of the second spring 303 is fixedly connected to one side of the top plate 3, and the other end of the second spring 303 is fixedly connected to the inner wall of the T-slot 103.

[0039] The connecting plate 5 includes a baffle 501, a rubber plate 502, a locking block 503, a locking groove 504, a threaded hole 505, and a bolt 506. The baffle 501 is fixedly connected to the top of the connecting plate 5, and the rubber plate 502 is provided on one side of the baffle 501.

[0040] A locking block 503 is fixedly connected to one side of the connecting plate 5. A slot 504 is provided on the inner wall of the clamp seat 1. Both the locking block 503 and the inner wall of the clamp seat 1 are provided with threaded holes 505. A bolt 506 is threadedly connected to the inner wall of the threaded hole 505.

[0041] Before use, first move the connecting plate 5 to insert the card block 503 into the card slot 504, then screw the bolt 506 into the threaded hole 505, and fix the connecting plate 5 on the fixture seat 1. The baffle 501 and the rubber plate 502 can intercept and buffer the ejected T-shaped workpiece body 2.

[0042] Brief description of the usage process: First, the connecting rod 101 is fixed with a certain clamping force by the upper chuck of the tensile testing machine, and the distance between the lower end face of the tensile testing fixture and the lower chuck of the tensile testing machine is adjusted to ensure that the lower end of the workpiece to be tested can be fixed with the lower chuck of the tensile testing machine.

[0043] Next, pull the pull block 302 to move the fixed rod 301 and the top plate 3 and compress the second spring 303, thereby moving the limit rod 304. Then, put the T-shaped workpiece body 2 into the T-shaped groove 103. Then, release the pull block 302 to reset the top plate 3 and push it against one side of the T-shaped workpiece body 2. At this time, the second spring 303 remains in the stored energy.

[0044] Then, the material tensile testing machine is started, and the changes in tensile force are recorded and monitored through the tensile testing machine. The test is stopped after the specimen breaks, and the strength of the weld point is evaluated based on the maximum tensile force value before the breakage. When the T-shaped workpiece body 2 breaks, the stored energy is released by the second spring 303, which allows the fixing rod 301 to drive the top plate 3 to reset, and the broken T-shaped workpiece body 2 is ejected from the through groove 4 and impacts the rubber plate 502. The baffle 501 and the rubber plate 502 can intercept and buffer the ejected T-shaped workpiece body 2 to prevent it from bouncing without the need for manual cleaning.

[0045] Example 2:

[0046] refer to Figure 2 and Figure 3 A tensile testing fixture for laser welding of T-shaped workpieces includes a fixture base 1, a T-shaped workpiece body 2 is disposed inside the fixture base 1, and a limiting component is disposed on the inner wall of the fixture base 1; the limiting component includes a groove 6 formed in the inner wall of the fixture base 1, an installation rod 7 is slidably connected to the inner wall of the groove 6, a positioning wheel 8 is rotatably connected to one end of the inner wall of the installation rod 7 via a rotating shaft, and a first spring 9 is fixedly connected to the other end of the positioning wheel 8, and there are two positioning wheels 8, which are symmetrically arranged.

[0047] The mounting rod 7 includes a positioning block 701 and a positioning groove 702. The positioning block 701 is fixedly connected to the outer side of one end of the mounting rod 7. The positioning groove 702 is provided on the inner wall of the clamp seat 1. The positioning block 701 and the positioning groove 702 are slidably connected.

[0048] Brief description of the usage process: Place the T-shaped workpiece body 2 into the fixture seat 1 and squeeze the two sets of positioning wheels 8. The positioning wheels 8 are squeezed and drive the mounting rod 7 to move into the slide groove 6. The positioning block 701 moves synchronously with the mounting rod 7. The positioning block 701 slides in the positioning groove 702, which can keep the connecting rod 7 moving stably. At this time, the first spring 9 is compressed and retains energy. The first spring 9 can make the two sets of positioning wheels 8 form a clamping force, thereby pre-fixing the T-shaped workpiece body 2.

[0049] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A tensile testing fixture for laser-welded seams of T-shaped workpieces, comprising a fixture base (1), characterized in that: The fixture seat (1) is provided with a T-shaped workpiece body (2) inside, a top plate (3) is provided inside, a through groove (4) is provided on the inner wall of the fixture seat (1), a connecting plate (5) is provided on one side of the fixture seat (1), and a limit component is provided on the inner wall of the fixture seat (1). The limiting component includes a groove (6) formed on the inner wall of the clamp seat (1), an installation rod (7) slidably connected to the inner wall of the groove (6), a positioning wheel (8) rotatably connected to the inner wall of one end of the installation rod (7) via a rotating shaft, and a first spring (9) fixedly connected to the other end of the positioning wheel (8). There are two positioning wheels (8), and the two positioning wheels (8) are symmetrically arranged.

2. The tensile testing fixture for laser weld seams of T-shaped workpieces according to claim 1, characterized in that: The clamp base (1) includes a connecting rod (101), an anti-detachment head (102) and a T-slot (103). The top of the clamp base (1) is fixedly connected to the connecting rod (101), and the top of the connecting rod (101) is fixedly connected to the anti-detachment head (102).

3. The tensile testing fixture for laser weld seams of T-shaped workpieces according to claim 2, characterized in that: The inner wall of the clamp seat (1) is provided with a T-shaped groove (103), and the T-shaped groove (103) is connected to the through groove (4).

4. The tensile testing fixture for laser-welded seams of T-shaped workpieces according to claim 1, characterized in that: The top plate (3) includes a fixing rod (301), a pull block (302), a second spring (303), and a limiting rod (304). The fixing rod (301) is fixedly connected to one side of the top plate (3). One end of the fixing rod (301) passes through one side of the clamp seat (1) and is fixedly connected to the pull block (302). The second spring (303) is provided on the outside of the fixing rod (301). The limiting rod (304) is slidably connected to the inner wall of the clamp seat (1). One end of the limiting rod (304) is fixedly connected to one side of the top plate (3).

5. The tensile testing fixture for laser weld seams of T-shaped workpieces according to claim 4, characterized in that: One end of the second spring (303) is fixedly connected to one side of the top plate (3), and the other end of the second spring (303) is fixedly connected to the inner wall of the T-slot (103).

6. The tensile testing fixture for laser weld seams of T-shaped workpieces according to claim 1, characterized in that: The connecting plate (5) includes a baffle (501), a rubber plate (502), a locking block (503), a locking groove (504), a threaded hole (505), and a bolt (506). The top of the connecting plate (5) is fixedly connected to the baffle (501), and a rubber plate (502) is provided on one side of the baffle (501).

7. The tensile testing fixture for laser weld seams of T-shaped workpieces according to claim 6, characterized in that: A locking block (503) is fixedly connected to one side of the connecting plate (5), and a locking groove (504) is opened on the inner wall of the clamp seat (1). Both the locking block (503) and the inner wall of the clamp seat (1) are provided with threaded holes (505), and a bolt (506) is threadedly connected to the inner wall of the threaded hole (505).

8. The tensile testing fixture for laser-welded seams of T-shaped workpieces according to claim 1, characterized in that: The mounting rod (7) includes a positioning block (701) and a positioning groove (702). The positioning block (701) is fixedly connected to the outer side of one end of the mounting rod (7). The positioning groove (702) is provided on the inner wall of the clamp seat (1). The positioning block (701) and the positioning groove (702) are slidably connected.

Images