Straightening device for observing surface of arc-shaped steel plate

Abstract

A straightening device for observing the surface of an arc-shaped steel plate belongs to the technical field of metal plate detection equipment and is used for straightening and observing an arc-shaped steel plate sample. According to the technical scheme, a bottom tray is a rectangular box body with an opening in the upper portion, a lower sample groove is formed in the bottom face of the bottom tray, a rectangular observation hole is formed in the bottom face of the bottom tray and located in the middle of the lower sample groove, and an upper gland is a rectangular plate and placed in the rectangular box body of the bottom tray. An upper sample groove is formed in the lower surface of the upper gland, the upper sample groove is opposite to the lower sample groove of the bottom tray, an arc-shaped steel plate sample is placed between the lower sample groove and the upper sample groove, and the middle position of the arc-shaped steel plate sample is opposite to the center position of the observation hole. The device is simple in structure and convenient to use, the arc-shaped steel plate material sheet can be observed under the condition of straightening and flattening, and the detection efficiency and result of an observation test are improved.

Description

Technical Field

[0001] The utility model relates to a straightening device used for observing the surface of an arc-shaped steel plate, and belongs to the technical field of metal plate detection equipment. Background Art

[0002] In order to test the surface damage of the coating on the surface of the plate during the stamping process, the drawbead friction test is generally carried out first, and then the depth of field microscope and other testing equipment are used for observation. The drawbead friction test can adjust the depth of the indenter penetration, which can be close to the actual stamping drawbead friction height. It is of practical significance to use it to study the friction and wear of the sheet during the stamping process. However, due to the intrusion setting of the indenter, the test sheet is subjected to a certain force in the lateral direction in addition to the longitudinal tension on the testing machine. Therefore, after the sheet is removed from the testing machine, it generally presents a certain curvature of bending deformation, so that the surface in contact with the indenter that needs to be observed is the concave surface of the arc sheet. When the arc surface is observed by the depth of field microscope and other testing equipment, it cannot be continuously and accurately focused, resulting in the phenomenon that the observation picture appears partially clear and partially blurred. In order to improve this situation, it is necessary to design a straightening device for the arc steel sheet sheet, and observe the sheet under the condition of straightening and flattening, so as to obtain good test results. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a straightening device for observing the surface of a curved steel plate, which can observe the curved steel plate material under the condition of straightening and flattening, thereby improving the detection efficiency and results of the observation test.

[0004] The technical solution of the utility model is:

[0005] A straightening device for observing the surface of an arc-shaped steel plate comprises a bottom tray and an upper pressure cover. The bottom tray is a rectangular box body with an upper opening. A lower sample groove is arranged on the bottom surface of the bottom tray. The lower sample groove is a long groove located at the center of the bottom surface. The length direction of the lower sample groove is along the length direction of the bottom tray. A rectangular observation hole is arranged on the bottom surface of the bottom tray. The observation hole is located in the middle position of the lower sample groove. The length direction of the observation hole is along the length direction of the bottom tray. The upper pressure cover is a rectangular plate. The length and width of the upper pressure cover respectively match the inner cavity length and width of the rectangular box body of the bottom tray. The upper pressure cover is placed in the rectangular box body of the bottom tray. A sample upper groove is arranged on the lower surface of the upper pressure cover. The sample upper groove is opposite to the sample lower groove of the bottom tray. The arc-shaped steel plate sample is placed between the sample lower groove and the sample upper groove. The middle position of the arc-shaped steel plate sample is opposite to the center position of the observation hole.

[0006] The straightening device for observing the surface of the arc-shaped steel plate described above, on the bottom surfaces of the bottom trays on both sides of the lower groove of the specimen, there are multiple stud bolts arranged sequentially along the length direction of the bottom tray. There are multiple screw holes on the plate surface of the upper pressing cover, and the multiple screw holes respectively correspond to the multiple stud bolts of the bottom tray. The multiple screw holes of the upper pressing cover are respectively sleeved on the multiple stud bolts of the bottom tray. The upper ends of the multiple stud bolts are sleeved with wing nuts, the wing nuts are screwed on the stud bolts, and the lower ends of the wing nuts are tightly connected to the upper surface of the upper pressing cover.

[0007] The straightening device for observing the surface of the arc-shaped steel plate described above, the lengths of the lower groove of the specimen and the upper groove of the specimen are greater than the length of the arc-shaped steel plate specimen, the widths of the lower groove of the specimen and the upper groove of the specimen match the width of the arc-shaped steel plate specimen, the height of the stud bolt is lower than the inner cavity height of the bottom tray, and the thickness of the upper pressing cover is less than the height of the stud bolt.

[0008] The beneficial effects of the present utility model are:

[0009] The arc-shaped steel plate specimen is placed between the lower groove of the specimen and the upper groove of the specimen. The lower groove of the specimen and the upper groove of the specimen restrain the arc-shaped steel plate specimen, and the arc-shaped steel plate specimen will not slide; pressing down the upper pressing cover can make the arc-shaped steel plate specimen deform and straighten in the lower groove of the specimen and the upper groove of the specimen; after the arc-shaped steel plate specimen is pressed flat, the wing nut and the stud bolt can fixedly connect the upper pressing cover and the bottom tray, so that the arc-shaped cover plate specimen cannot move; placing the bottom surface of the bottom tray upward on the specimen platform of the depth-of-field microscope, the arc-shaped steel plate specimen can be observed through the observation hole.

[0010] The structure of the present utility model is simple and convenient to use, which can enable the arc-shaped steel plate sheet to be observed under the condition of straightening and flattening, and improves the detection efficiency and results of the observation test. Description of the Drawings

[0011] Figure 1 is the structural schematic diagram of the present utility model;

[0012] Figure 2 is the top view of the bottom tray;

[0013] Figure 3 is Figure 2 the A-A cross-sectional view of

[0014] Figure 4 is the top view of the upper pressing cover;

[0015] Figure 5 is Figure 4 the B-B cross-sectional view of

[0016] Figure 6 is the schematic diagram of the usage state of the present utility model.

[0017] The markings in the figure are as follows: bottom tray 1, stud 2, lower sample groove 3, observation hole 4, upper gland 5, upper sample groove 6, screw hole 7, wing nut 8, and arc-shaped steel plate sample 9. Detailed implementation mode

[0018] This utility model is composed of a bottom tray 1, a stud 2, an upper gland 5, and a wing nut 8.

[0019] Figure 1 、 2 As shown in FIGS. 1 and 3, the bottom tray 1 is a rectangular box with an upper opening. There is a lower sample groove 3 on the bottom surface of the bottom tray 1. The lower sample groove 3 is a long groove located at the center of the bottom surface. The length direction of the lower sample groove 3 is along the length direction of the bottom tray 1. The length of the lower sample groove 3 is greater than the length of the arc-shaped steel plate sample 9, and the width of the lower sample groove 3 matches the width of the arc-shaped steel plate sample 9. There is a rectangular observation hole 4 on the bottom surface of the bottom tray 1. The observation hole 4 is located at the middle position of the lower sample groove 3. The length direction of the observation hole 4 is along the length direction of the bottom tray 1. The lower sample groove 3 is used to place the arc-shaped steel plate sample 9, and the tester can observe the bottom surface of the arc-shaped steel plate sample 9 through the observation hole 4.

[0020] Figure 1 、 2 As shown in FIGS. 1, 2, and 3, there are multiple studs 2 on the bottom surfaces of the two sides of the bottom tray 1 at the bottom of the lower sample groove 3. The studs 2 are arranged in sequence along the length direction of the bottom tray 1. The height of the studs 2 is lower than the inner cavity height of the bottom tray 1. The studs 2 are used to position the upper gland 5 and to tightly connect the upper gland 5.

[0021] Figure 1 、 4 As shown in FIGS. 1 and 5, the upper gland 5 is a rectangular plate. The length and width of the upper gland 5 respectively match the inner cavity length and width of the rectangular box of the bottom tray 1. The thickness of the upper gland 5 is less than the height of the studs 2. The upper gland 5 is placed in the rectangular box of the bottom tray 1. There is an upper sample groove 6 on the lower surface of the upper gland 5. The upper sample groove 6 is opposite to the lower sample groove 3 of the bottom tray 1. The length and width of the upper sample groove 6 correspond to those of the lower sample groove 3.

[0022] Figure 1 、 4 As shown in FIGS. 1 and 5, there are multiple screw holes 7 on the plate surface of the upper gland 5. The multiple screw holes 7 respectively correspond to the multiple studs 2 of the bottom tray 1. The multiple screw holes 7 of the upper gland 5 are respectively sleeved on the multiple studs 2 of the bottom tray 1. A wing nut 8 is sleeved on the upper end of the multiple studs 2. The wing nut 8 is screwed on the stud 2, and the lower end of the wing nut 8 is tightly connected to the upper surface of the upper gland 5.

[0023] Figure 1 、6 It is shown that the arc-shaped steel plate specimen 9 is placed between the specimen lower groove 3 and the specimen upper groove 6, and the middle position of the arc-shaped steel plate specimen 9 is opposite to the center position of the observation hole 4. After being straightened and flattened, the arc-shaped steel plate specimen 9 is in a rectangular shape, with the original size of (20 - 50) mm × (100 - 200) mm and the thickness of 0.5 - 2.5 mm.

[0024] The usage process of the present utility model is as follows:

[0025] Firstly, place the bottom tray 1 with the opening facing upwards on a flat test bench;

[0026] Then, place the concave surface of the arc-shaped steel plate specimen 9 downwards in the specimen lower groove 3 on the bottom tray 1, align the middle part of the arc-shaped steel plate specimen 9 with the middle part of the specimen lower groove 3, and the middle part of the arc-shaped steel plate specimen 9 falls within the observation area of the observation hole 4;

[0027] Next, align the six screw holes 7 of the upper pressing cover 5 with the six studs 2 on the bottom tray 1, and place the upper pressing cover 5 into the bottom tray 1 along the studs 2 through the screw holes 7, so that the top of the arc-shaped steel plate specimen 9 is embedded in the specimen upper groove 6 on the lower surface of the upper pressing cover 5;

[0028] Slowly press the upper pressing cover 5 downwards with the palm, so that the arc-shaped steel plate specimen 9 slowly deforms and gradually straightens in the specimen lower groove 3 and the specimen upper groove 6 until it is flattened, and keep the upper pressing cover 5 stable during the process;

[0029] While the arc-shaped steel plate specimen 9 remains in the flattened state, first tighten the two wing nuts 8 in the middle, and then tighten the wing nuts 8 at the four corner positions;

[0030] Finally, conduct the observation. Place the bottom surface of the bottom tray 1 upwards on the specimen platform of the depth-of-field microscope, and observe the arc-shaped steel plate specimen 9 through the observation hole 4.

[0031] After the observation is completed, remove the device from the specimen platform of the depth-of-field microscope, place the observation hole 4 downwards on the flat test bench, loosen the six wing nuts 8, and remove the upper pressing cover 5 and the arc-shaped steel plate specimen 9 in sequence;

[0032] Repeat the above steps to operate the next specimen.

[0033] An embodiment of the present utility model is as follows:

[0034] The length of the bottom tray 1 is 290 mm, the width is 100 mm, the height is 40 mm, the inner cavity height is 30 mm, the length of the specimen lower groove 3 is 250 mm, the width is 31 mm, the depth is 0.25 mm, the length of the observation hole 4 is 80 mm, and the width is 20 mm;

[0035] The diameter of the stud 2 is 8 mm and the height is 15 mm;

[0036] The length of the upper gland 5 is 250 mm, the width is 78 mm, and the thickness is 8 mm. The length of the groove 6 on the specimen is 250 mm, the width is 31 mm, and the depth is 0.25 mm. The diameter of the screw hole 7 is 8 mm;

[0037] The original length of the arc-shaped steel plate specimen 9 is 150 mm, the width is 30 mm, and the thickness is 2.0 mm.

Claims

1. A straightening device for observing the surface of an arc-shaped steel plate, characterized in that: It includes a bottom tray (1) and an upper gland (5). The bottom tray (1) is a rectangular box body with an upper opening. There is a specimen lower groove (3) on the bottom surface of the bottom tray (1). The specimen lower groove (3) is a long groove located at the center of the bottom surface. The length direction of the specimen lower groove (3) is along the length direction of the bottom tray (1). There is a rectangular observation hole (4) on the bottom surface of the bottom tray (1). The observation hole (4) is located at the middle position of the specimen lower groove (3). The length direction of the observation hole (4) is along the length direction of the bottom tray (1). The upper gland (5) is a rectangular plate. The length and width of the upper gland (5) respectively match the inner cavity length and width of the rectangular box body of the bottom tray (1). The upper gland (5) is placed in the rectangular box body of the bottom tray (1). There is a specimen upper groove (6) on the lower surface of the upper gland (5). The specimen upper groove (6) is opposite to the specimen lower groove (3) of the bottom tray (1). The arc-shaped steel plate specimen (9) is placed between the specimen lower groove (3) and the specimen upper groove (6). The middle position of the arc-shaped steel plate specimen (9) is opposite to the center position of the observation hole (4).

2. The straightening device for observing the surface of an arc-shaped steel plate according to claim 1, characterized in that: On the bottom surface of the bottom tray (1) on both sides of the specimen lower groove (3), there are multiple studs (2) respectively. The studs (2) are arranged in sequence along the length direction of the bottom tray (1). There are multiple screw holes (7) on the plate surface of the upper gland (5). The multiple screw holes (7) are respectively opposite to the multiple studs (2) of the bottom tray (1). The multiple screw holes (7) of the upper gland (5) are respectively sleeved on the multiple studs (2) of the bottom tray (1). The upper ends of the multiple studs (2) are sleeved with wing nuts (8). The wing nuts (8) are screwed on the studs (2). The lower end of the wing nut (8) is tightly connected to the upper surface of the upper gland (5).

3. The straightening device for observing the surface of the arc-shaped steel plate according to claim 2, wherein: The lengths of the specimen lower groove (3) and the specimen upper groove (6) are greater than the length of the arc-shaped steel plate specimen (9). The widths of the specimen lower groove (3) and the specimen upper groove (6) match the width of the arc-shaped steel plate specimen (9). The height of the stud (2) is lower than the inner cavity height of the bottom tray (1). The thickness of the upper gland (5) is less than the height of the stud (2).

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