A metal sheet bending fatigue detection device

Abstract

The utility model relates to material detection technical field, concretely is a kind of metal sheet bending fatigue detection device, including equipment host, equipment host includes workstation;Clamping structure includes fixed jaw, fixed jaw sliding installation is in the upper surface both sides of workstation, and the upper surface one side edge of fixed jaw slidingly connects with movable jaw;Detection structure includes base column, and base column sliding installation is in the upper surface front and back both sides of workstation, and one side fixed mounting of base column has abutting plate.In the utility model, two groups of fixed jaw can be synchronous reverse sliding on the upper surface both sides of workstation, can adjust interval, while adapting to different length size metal sheet in certain range, can carry out certain degree of relative forced centring effect to metal sheet, to ensure that abutting plate force point is located in the middle of metal sheet, ensure that the metal material quality on both sides of measured point is relatively consistent, tensile, surface stress etc. are relatively consistent, improve measurement numerical accuracy.

Description

Technical Field

[0001] This utility model relates to the field of materials testing technology, specifically a device for testing the bending fatigue of thin metal sheets. Background Technology

[0002] Bending fatigue testing of metal sheets is an important means of evaluating the performance of metallic materials under repeated bending loads. It mainly involves using bending equipment such as bending stiffness testers and fatigue strength bending testers to repeatedly bend metal sheets in both directions.

[0003] However, most current testing methods involve clamping and fixing one edge of the metal sheet while applying force to the other side without limiting its position. The bending location depends on the clamping depth, the lengths of the thin sheets on both sides of the bending point are inconsistent, the quality of the metal on both sides of the test point is relatively inconsistent, and there are differences in tensile strength, surface stress, etc., so there is room for improvement in measurement accuracy. Utility Model Content

[0004] The purpose of this invention is to provide a device for detecting bending fatigue of thin metal sheets, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A device for detecting bending fatigue of thin metal sheets, comprising:

[0007] The main unit of the equipment, including the workbench;

[0008] The clamping structure includes a fixed clamping jaw, which is slidably mounted on both sides of the upper surface of the worktable, and a movable clamping jaw is slidably engaged on one edge of the upper surface of the fixed clamping jaw;

[0009] The detection structure includes a base column, which is slidably installed on the front and rear sides of the upper surface of the workbench, and a backing plate is fixedly installed on one side of the base column.

[0010] Furthermore, the workbench is fixedly equipped with support legs on both sides of its bottom, and a control console is fixedly installed on the rear edge of the upper surface of the workbench, with a touch panel embedded in the front surface of the control console.

[0011] Furthermore, a battery compartment is provided on the lower rear edge of the workbench, and a power supply battery is installed inside the battery compartment.

[0012] Furthermore, a first limiting groove is provided on both sides of the upper surface of the worktable, and a bidirectional lead screw is inserted and rotatably installed in the first limiting groove. A first slider is screwed and sleeved at both ends of the bidirectional lead screw. The upper end of the first slider is fixedly connected to a fixed clamping jaw, and a knob is fixedly connected to one end of the bidirectional lead screw.

[0013] Furthermore, a compensation slider is fixedly installed on the upper end of the first slider, the compensation slider is slidably hinged to the compensation groove, the compensation groove is opened at the bottom of the fixed jaw, a stop block is fixedly installed in the middle of the contact surface between the fixed jaw and the moving jaw, and a fastening bolt is inserted and screwed into the middle of the fixed jaw and the moving jaw.

[0014] Furthermore, the worktable has two limiting grooves on its front and rear sides. A drive screw is inserted and rotatably installed in the two limiting grooves. Two sliders are screwed onto both ends of the drive screw. The upper end of the two sliders is fixedly connected to the base column. One end of the drive screw is fixedly connected to the output end of the servo motor.

[0015] Furthermore, a connecting rod is slidably engaged at both ends of one side of the abutment plate, and the connecting rod is fixedly installed at both ends of one side of the contact end. A sensor mounting groove is provided in the middle of the contact surface of the abutment plate and the contact end, and a pressure sensor is installed in the sensor mounting groove.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. Two sets of fixed and movable jaws clamp and fix the two sides of the metal sheet. Then, two base columns drive two sets of abutment plates to slide back and forth synchronously in the same direction, repeatedly pushing the front and rear surfaces of the metal sheet in turn, forcing the metal sheet to bend back and forth, thus realizing the bending fatigue test. The two sets of fixed jaws can slide synchronously in opposite directions on both sides of the worktable surface, and the spacing can be adjusted. While adapting to metal sheets of different lengths within a certain range, it can also have a certain degree of relative forced centering effect on the metal sheet, so as to ensure that the force application point of the abutment plate is located in the center of the metal sheet, and to ensure that the metal material on both sides of the test point is relatively consistent, and the tensile strength, surface stress, etc. are relatively consistent, thus improving the accuracy of the measurement values.

[0018] 2. After the clamping structure fixes the metal sheet to be tested stably, the servo motor is started to rotate the drive screw, which synchronously controls the sliding of the two sets of No. 2 sliders in the same direction. The contact end is pushed by the abutment plate to press against the middle of the metal sheet, forcing the metal sheet to bend. The resistance of the metal sheet during bending is measured by the pressure sensor. The bending fatigue is known by measuring the change of resistance during repeated bending of the metal sheet. When the metal sheet bends, the compensation slider rotates and slides in the compensation groove, which causes the fixed jaw to deflect and slide to compensate for the changes in the angle and spacing on both sides of the metal sheet. At the same time, the change in resistance is measured. The force required for the fixed jaw to move and compensate each time the sheet bends is constant and negligible. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the main unit of the device in this utility model;

[0021] Figure 3 This is a schematic diagram of the clamping structure in this utility model;

[0022] Figure 4 This is a schematic diagram of the clamping structure in this utility model;

[0023] Figure 5 This is a schematic diagram of the clamping structure in this utility model;

[0024] Figure 6 This is a schematic diagram of the detection structure in this utility model;

[0025] Figure 7 This is a schematic diagram of the detection structure in this utility model.

[0026] In the diagram: 1. Main unit; 101. Workbench; 102. Support leg; 103. Control console; 104. Touch panel; 105. Battery compartment; 106. Power supply battery; 2. Clamping structure; 201. First limit slide groove; 202. Bidirectional lead screw; 203. First slider; 204. Knob; 205. Compensating slider; 206. Compensating slide groove; 207. Fixed gripper; 208. Moving gripper; 209. Stop; 210. Fastening bolt; 3. Detection structure; 301. Second limit slide groove; 302. Drive lead screw; 303. Second slider; 304. Servo motor; 305. Base column; 306. Abutment plate; 307. Connecting rod; 308. Contact end; 309. Sensor mounting slot; 310. Pressure sensor. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 1-7 In this embodiment of the present invention, a metal sheet bending fatigue testing device includes a main unit 1, which includes a worktable 101; a clamping structure 2, which includes a fixed clamp 207, which is slidably installed on both sides of the upper surface of the worktable 101, and a movable clamp 208 is slidably engaged on one edge of the upper surface of the fixed clamp 207; and a testing structure 3, which includes a base column 305, which is slidably installed on the front and rear sides of the upper surface of the worktable 101, and a backing plate 306 is fixedly installed on one side of the base column 305.

[0029] Specifically, the metal sheet is clamped and fixed on both sides by two sets of fixed jaws 207 and movable jaws 208. Then, two base columns 305 drive two sets of abutment plates 306 to slide back and forth synchronously in the same direction, repeatedly pushing the front and rear surfaces of the metal sheet in turn, forcing the metal sheet to bend back and forth on both sides, thus realizing the bending fatigue test. The two sets of fixed jaws 207 can slide synchronously in opposite directions on both sides of the upper surface of the worktable 101, and the spacing can be adjusted. While adapting to metal sheets of different lengths within a certain range, it can also perform a certain degree of relative forced centering effect on the metal sheet to ensure that the force application point of the abutment plate 306 is located in the center of the metal sheet, ensuring that the metal material on both sides of the test point is relatively consistent, and that the tensile strength, surface stress, etc. are relatively consistent, thus improving the accuracy of the measurement values.

[0030] Example 1

[0031] like Figures 1-2 As shown, in this embodiment, support legs 102 are fixedly installed on both sides of the bottom of the workbench 101, and a control console 103 is fixedly installed on the rear edge of the upper surface of the workbench 101. A touch panel 104 is embedded on the front surface of the control console 103. A battery compartment 105 is opened on the lower rear edge of the workbench 101, and a power supply battery 106 is installed in the battery compartment 105.

[0032] In this embodiment, the power supply battery 106 installed in the battery compartment 105 supplies power to the various electrical components of the overall structure, and the overall structure is relatively controlled by the touch panel 104.

[0033] like Figures 5-7 As shown, in this embodiment, the upper surface of the workbench 101 is provided with two limiting slide grooves 301 on the front and rear sides. A drive screw 302 is inserted and rotatably installed in the two limiting slide grooves 301. Two sliders 303 are screwed and sleeved at both ends of the drive screw 302. The upper end of the slider 303 is fixedly connected to the base column 305. One end of the drive screw 302 is fixedly connected to the output end of the servo motor 304. A connecting rod 307 is slidably engaged at the upper and lower ends of one side of the abutment plate 306. The connecting rod 307 is fixedly installed at the upper and lower ends of one side of the contact end 308. A sensor mounting groove 309 is provided in the middle of the contact surface of the abutment plate 306 and the contact end 308. A pressure sensor 310 is installed in the sensor mounting groove 309.

[0034] In specific implementation, after the clamping structure 2 fixes and stabilizes the metal sheet to be tested, the servo motor 304 is started to rotate and drive the lead screw 302, which synchronously controls the sliding of the two sets of second sliders 303 in the same direction. The contact end 308 is pushed by the abutment plate 306 to press against the middle of the metal sheet, forcing the metal sheet to bend. The resistance of the metal sheet during bending is measured by the pressure sensor 310. The bending fatigue is known by measuring the change of resistance during repeated bending of the metal sheet. When the metal sheet bends, the compensation slider 205 rotates and slides in the compensation groove 206, which causes the fixed jaw 207 to deflect and slide, thereby compensating for the changes in the angle and spacing on both sides of the metal sheet. At the same time, the change in resistance is measured. The force required for the fixed jaw 207 to move and compensate each time the sheet bends is constant and negligible.

[0035] Example 2

[0036] Based on Embodiment 1, in order to supplement the specific method of adjusting the position of the metal sheet and clamping and limiting it through the clamping structure 2, which was not mentioned in Embodiment 1.

[0037] like Figures 3-4 As shown, in this embodiment, a first limiting groove 201 is provided on both sides of the upper surface of the workbench 101. A bidirectional lead screw 202 is rotatably installed in the first limiting groove 201. A first slider 203 is screwed onto both ends of the bidirectional lead screw 202. The upper end of the first slider 203 is fixedly connected to the fixed jaw 207. A knob 204 is fixedly connected to one end of the bidirectional lead screw 202. A compensation slider 205 is fixedly installed on the upper end of the first slider 203. The compensation slider 205 is slidably hinged to the compensation groove 206. The compensation groove 206 is provided at the bottom of the fixed jaw 207. A stop block 209 is fixedly installed in the middle of the contact surface between the fixed jaw 207 and the movable jaw 208. A fastening bolt 210 is screwed into the middle of the fixed jaw 207 and the movable jaw 208.

[0038] In practice, by rotating the bidirectional lead screw 202 with the knob 204, the two sets of first sliders 203 are rubbed together to adjust the distance synchronously. After the two ends of the metal sheet are respectively clamped between the two sets of fixed jaws 207 and movable jaws 208, the bidirectional lead screw 202 is rotated to finely adjust the distance. The stop block 209 is used to abut against the two sides of the metal sheet to perform relative forced centering. After the position is adjusted, the fastening bolts 210 on one side of the two sets of movable jaws 208 are rotated to push the movable jaws 208 to slide and perform clamping and limiting.

[0039] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0040] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for detecting bending fatigue of thin metal sheets, characterized in that, include: The main unit of the equipment (1) includes a workbench (101); The clamping structure (2) includes a fixed clamping jaw (207), which is slidably mounted on both sides of the upper surface of the worktable (101), and a movable clamping jaw (208) is slidably engaged on one side edge of the upper surface of the fixed clamping jaw (207). The detection structure (3) includes a base column (305), which is slidably installed on the front and rear sides of the upper surface of the workbench (101), and an abutment plate (306) is fixedly installed on one side of the base column (305).

2. The metal sheet bending fatigue testing device according to claim 1, characterized in that, The workbench (101) is fixedly installed with support legs (102) on both sides of the bottom. The workbench (101) is fixedly installed with a control console (103) on the rear edge of the upper surface. The control console (103) is embedded with a touch panel (104) on the front surface.

3. The metal sheet bending fatigue testing device according to claim 2, characterized in that, A battery compartment (105) is provided on the lower rear edge of the workbench (101), and a power supply battery (106) is installed in the battery compartment (105).

4. The metal sheet bending fatigue testing device according to claim 3, characterized in that, The worktable (101) has a first limiting groove (201) on both sides of its upper surface. A bidirectional lead screw (202) is inserted and rotated in the first limiting groove (201). A first slider (203) is screwed onto both ends of the bidirectional lead screw (202). The upper end of the first slider (203) is fixedly connected to a fixed jaw (207). A knob (204) is fixedly connected to one end of the bidirectional lead screw (202).

5. The metal sheet bending fatigue testing device according to claim 4, characterized in that, A compensation slider (205) is fixedly installed on the upper end of the first slider (203). The compensation slider (205) is slidably hinged to the compensation groove (206). The compensation groove (206) is opened at the bottom of the fixed jaw (207). A stop block (209) is fixedly installed in the middle of the contact surface between the fixed jaw (207) and the movable jaw (208). A fastening bolt (210) is inserted and screwed into the middle of the fixed jaw (207) and the movable jaw (208).

6. The metal sheet bending fatigue testing device according to claim 5, characterized in that, The worktable (101) has two limiting grooves (301) on the front and rear sides of its upper surface. A drive screw (302) is inserted and rotated in the two limiting grooves (301). Two sliders (303) are screwed and sleeved at both ends of the drive screw (302). The upper end of the slider (303) is fixedly connected to the base column (305). One end of the drive screw (302) is fixedly connected to the output end of the servo motor (304).

7. The metal sheet bending fatigue testing device according to claim 6, characterized in that, A connecting rod (307) is slidably engaged at both ends of one side of the abutment plate (306). The connecting rod (307) is fixedly installed at both ends of one side of the contact end (308). A sensor mounting groove (309) is provided in the middle of the contact surface of the abutment plate (306) and the contact end (308). A pressure sensor (310) is installed in the sensor mounting groove (309).

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