A precision part comparison bending strength test device

Abstract

The present invention discloses a precision part comparative bending strength test device, which includes a lifting stamping table, a lifting pressure power mechanism, a pressure head, a material bearing seat, a bearing seat adjustment bracket, and a material clamping and fixing mechanism. A lifting pressure power mechanism for pressing the material is vertically arranged on the lifting stamping table. A pressure head is fixedly arranged at the telescopic end of the lifting pressure power mechanism. A material bearing seat is arranged below the pressure head. An upper part of the material bearing seat is provided with a bearing seat adjustment bracket with a triangular longitudinal section and adjustable angle for bearing the material. A material clamping and fixing mechanism with a constant telescopic force in cooperation with the pressure head is arranged below the bearing seat adjustment bracket. The present invention can quickly distinguish the bending strength of two components, improve the test efficiency, and reduce the test cost; it can improve the measurement accuracy.

Description

Technical Field

[0001] The invention relates to the technical field of detection equipment, in particular to the technical field of a precision parts comparative bending strength test device. Background Art

[0002] During the production process of an enterprise, there is more than one supplier. At the same time, as time goes by, some suppliers will be cancelled and some suppliers will be added. For some parts with high bending strength requirements, the parts have the same appearance. The purchasing department cannot judge which part has better bending strength. They often need to be sent to testing agencies for measurement one by one. The testing agency charges according to the number of parts to be tested, which increases the cost of identifying the performance of the parts. At the same time, the bending strength of a single part is tested separately, and the results are inefficient.

[0003] In order to support the two ends of the material, the material bearing seat of the existing bending strength testing mechanism needs to reserve a certain length at both ends of the material for support. At the same time, as the material to be tested bends, the actual measured length of the material between the two supporting points is different from the actual measured length of the material between the initial two supporting points, which will affect the measurement accuracy of the material's bending strength.

[0004] The patent number is CN201921849521.9, which is a device for testing the bending resistance of mechanical parts. The device can provide simple support for two parts of the mechanical parts, and can perform bending resistance tests on the two parts of the mechanical parts, which is convenient for testing the bending resistance of mechanical parts of different lengths. At the same time, it can avoid damage to external fixing equipment, effectively reduce costs, and is easy to use. However, the testing device needs to reserve a certain length at both ends of the component to be tested for support. As the material bends, the support point will also change, which will affect the measurement accuracy of the material's bending strength. At the same time, the testing device can only measure a single material one by one, and cannot quickly test the bending strength of two parts with the same appearance. Summary of the invention

[0005] The purpose of the present invention is to solve the problems in the prior art and to propose a precision parts comparative bending strength test device, which solves the problem that the existing bending strength testing equipment cannot quickly distinguish the bending strength of two components. At the same time, it cannot solve the problem that as the material bends during the test, the test support point will change, affecting the test accuracy.

[0006] To achieve the above object, the present invention provides a precision part comparative bending strength test device, which includes a lifting stamping table, a lifting pressure power mechanism, a pressure head, a material bearing seat, a bearing seat adjusting bracket, and a material clamping and fixing mechanism. A lifting pressure power mechanism for pressing the material is vertically arranged on the lifting stamping table. A pressure head is fixedly arranged at the telescopic end of the lifting pressure power mechanism. A material bearing seat is arranged below the pressure head. An adjustable bearing seat adjusting bracket with a triangular longitudinal section for bearing the material is arranged on the upper part of the material bearing seat. A material clamping and fixing mechanism with a constant telescopic force in cooperation with the pressure head is arranged below the bearing seat adjusting bracket.

[0007] Preferably, the lifting stamping table includes vertical rods, a ground connection fixing plate, a table plate, and a tensile connection plate. The number of the vertical rods is two. The upper ends of the vertical rods are fixedly connected with the table plate. A tensile connection plate is arranged between the table plate and the vertical rods. The lower ends of the vertical rods are fixedly provided with the ground connection fixing plate.

[0008] Preferably, the lifting pressure power mechanism includes a lifting screw mechanism, a lifting power motor, a lifting connection head, and a guide rod. The screw in the lifting screw mechanism is in transmission connection with the lifting power motor. The lower end of the telescopic rod of the lifting screw mechanism is connected with the lifting connection head. Guide rods are vertically fixedly arranged on both sides of the lifting connection head.

[0009] Preferably, it further includes a connection bracket. The connection bracket includes a lifting fixed guide seat, side fitting connection plates, a bottom connection plate, and a strengthening connection plate. Side fitting connection plates are fixedly attached to both sides of the lifting fixed guide seat. The lower ends of the side fitting connection plates are fixedly provided with the bottom connection plate. A strengthening connection plate is arranged between the bottom connection plate and the side fitting connection plates.

[0010] Preferably, the guide rod passes through the lifting fixed guide seat.

[0011] Preferably, the pressure head includes a hinge seat, a strength comparison pressure rod, and a connecting cylinder. The middle part of the strength comparison pressure rod is hinged on the hinge seat. A connecting cylinder is arranged above the hinge seat.

[0012] Preferably, it further includes a positioning filling plate. The hinge seat is in an inverted U shape. A positioning filling plate for restricting the rotation of the strength comparison pressure rod is inserted into the upper part of the strength comparison pressure rod on the inner side of the hinge seat.

[0013] Preferably, the carrier base adjusting bracket includes a right support plate, a left support plate, an inclination adjusting shaft, an inclination positioning gear, an inclination adjusting sleeve, and an inclination adjusting screw. The lower ends of the right support plate and the left support plate are respectively fixed with an inclination adjusting shaft. The inclination adjusting shaft passes through the material carrier base, and the inclination positioning gears that mesh with each other are fixed on the inclination adjusting shaft. The upper ends of the right support plate and the left support plate are respectively hinged with an inclination adjusting screw, and the inclination adjusting screws on the same side are connected by an inclination adjusting sleeve. The longitudinal sections of the right support plate and the left support plate are triangles with openings facing upward.

[0014] Preferably, the material clamping and fixing mechanism includes a clamping seat plate, an equal-pressure clamping cylinder, and a clamping friction plate. At least three equal-pressure clamping cylinders are vertically fixed on the clamping seat plate, and a clamping friction plate is fixed on the telescopic shaft of the equal-pressure clamping cylinder.

[0015] Preferably, the clamping friction plate is provided with patterns for increasing friction.

[0016] The beneficial effects of the present invention: By hinging a strength comparison pressure rod on the indenter, the bending strength sizes of two components can be quickly distinguished, improving the test efficiency and reducing the test cost.

[0017] By making the longitudinal section of the carrier base adjusting bracket triangular and supporting the end of the material through the inner inclined surface, the actual measurement length of the material to be measured can be kept unchanged, improving the measurement accuracy. At the same time, the material is clamped and fixed by the material clamping and fixing mechanism, which can prevent the material from sliding and improve the stability during the material measurement process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and other features, properties, and advantages of the present invention will become more obvious through the following description in conjunction with the drawings and embodiments. The same reference numerals in the drawings always represent the same features, where:

[0019] Figure 1 is a three-dimensional schematic diagram of a precision part comparison bending strength test device of the present invention;

[0020] Figure 2 is a three-dimensional schematic diagram of the lifting stamping table;

[0021] Figure 3 is an assembly schematic diagram of the lifting pressure power mechanism and the connecting bracket;

[0022] Figure 4 is a three-dimensional schematic diagram of the indenter;

[0023] Figure 5 is an exploded schematic diagram of the indenter;

[0024] Figure 6It is a three-dimensional schematic diagram of the bearing seat adjusting bracket;

[0025] Figure 7 It is a three-dimensional schematic diagram of the material clamping and fixing mechanism.

[0026] In the figure: 1 - lifting stamping table, 11 - vertical rod, 12 - ground connection fixing plate, 13 - table board, 14 - tensile connection plate, 2 - lifting pressure power mechanism, 21 - lifting screw mechanism, 22 - lifting power motor, 23 - lifting connection head, 24 - guide rod, 3 - connection bracket, 31 - lifting fixed guide seat, 32 - side fitting connection plate, 33 - bottom connection plate, 34 - strengthening connection plate, 4 - pressure head, 41 - hinge seat, 42 - strength comparison pressure rod, 43 - positioning filling plate, 44 - connection cylinder, 5 - material bearing seat, 6 - bearing seat adjusting bracket, 61 - right support plate, 62 - left support plate, 63 - inclination adjusting shaft, 64 - inclination positioning gear, 65 - inclination adjusting sleeve, 66 - inclination adjusting screw, 7 - material clamping and fixing mechanism, 71 - clamping seat plate, 72 - equal pressure clamping cylinder, 73 - clamping friction plate. Specific implementation manner

[0027] Refer to Figure 1 , a precision part comparison bending strength test device of the present invention includes a lifting stamping table 1, a lifting pressure power mechanism 2, a pressure head 4, a material bearing seat 5, a bearing seat adjusting bracket 6 and a material clamping and fixing mechanism 7. A lifting pressure power mechanism 2 for pressing the material is vertically arranged on the lifting stamping table 1. A pressure head 4 is fixedly arranged at the telescopic end of the lifting pressure power mechanism 2. The pressure head 4 is driven to lift by the lifting pressure power mechanism 2, and the material is pressed by the pressure head 4. A pressure sensor is arranged between the pressure head 4 and the lifting pressure power mechanism 2, and pressure data is collected through the pressure sensor. A material bearing seat 5 is arranged below the pressure head 4. An upper part of the material bearing seat 5 is provided with a bearing seat adjusting bracket 6 for bearing the material with a triangular longitudinal section and adjustable angle. By making the longitudinal section of the bearing seat adjusting bracket 6 triangular, as the tested material bends, the straight length of the tested material becomes smaller, so the material will move downward in the triangular groove, and finally the actual measurement length of the tested material can be kept unchanged. There is no need to reserve a certain length at one end for support. At the same time, as the tested material bends, the actual measurement length will not change, which can improve the measurement accuracy. A material clamping and fixing mechanism 7 with a constant telescopic force in cooperation with the pressure head 4 is arranged below the bearing seat adjusting bracket 6. The material is clamped and fixed by the cooperation of the material clamping and fixing mechanism 7 and the pressure head 4, so that the material can be kept balanced. The top force value of the material clamping and fixing mechanism 7 needs to be subtracted from the measured pressure value, and the top force value of the material clamping and fixing mechanism 7 is constant. As Figure 2As shown, the lifting stamping table 1 includes vertical rods 11, ground connection fixing plates 12, table plates 13 and tensile connection plates 14. The number of the vertical rods 11 is two. The upper ends of the vertical rods 11 are fixedly connected with the table plates 13. A tensile connection plate 14 is arranged between the table plates 13 and the vertical rods 11. The lower ends of the vertical rods 11 are fixedly provided with ground connection fixing plates 12. The actual number of the vertical rods 11 is set according to strength requirements.

[0028] In this embodiment, as Figure 3 shown, the lifting pressure power mechanism 2 includes a lifting screw rod mechanism 21, a lifting power motor 22, a lifting connection head 23 and a guide rod 24. The screw rod in the lifting screw rod mechanism 21 is in transmission connection with the lifting power motor 22. The lower end of the telescopic rod of the lifting screw rod mechanism 21 is connected with the lifting connection head 23. Guide rods 24 are vertically fixedly arranged on both sides of the lifting connection head 23 respectively. By driving the screw rod in the lifting screw rod mechanism 21 to rotate through the lifting power motor 22, the screw sleeve is driven to elongate by the screw rod, and finally the lifting connection head 23 is lifted and lowered by the lower end of the screw sleeve. As Figure 3 shown, it further includes a connection bracket 3. The connection bracket 3 includes a lifting fixed guide seat 31, side fitting connection plates 32, a bottom connection plate 33 and a strengthening connection plate 34. The side fitting connection plates 32 are respectively fixedly attached to both sides of the lifting fixed guide seat 31. The bottom connection plate 33 is fixedly provided at the lower ends of the side fitting connection plates 32. A strengthening connection plate 34 is arranged between the bottom connection plate 33 and the side fitting connection plates 32. As Figure 3 shown, the guide rod 24 passes through the lifting fixed guide seat 31. By lifting and fixing the guide seat 31 with the guide rod 24, the lifting pressure power mechanism 2 can be kept vertical to apply pressure to the material.

[0029] In this embodiment, as Figure 4 and Figure 5 shown, the pressing head 4 includes a hinge seat 41, a strength comparison pressing rod 42 and a connecting column body 44. The middle part of the strength comparison pressing rod 42 is hinged on the hinge seat 41. A connecting column body 44 is arranged above the hinge seat 41. By inserting the connecting column body 44 on the lifting pressure power mechanism 2, it is synchronously connected with the lifting pressure power mechanism 2 for lifting. A pressure sensor is arranged between the lifting pressure power mechanism 2 and the connecting column body 44. The pressure is measured by the pressure sensor. By respectively arranging materials to be measured below both ends of the strength comparison pressing rod 42, as the strength comparison pressing rod 42 presses down, when the material with weaker bending strength will bend first, then the strength comparison pressing rod 42 will tilt, and thus it can be compared and measured which material has stronger bending resistance. As Figure 4 and Figure 5As shown, it also includes a positioning filling plate 43, the hinge seat 41 is inverted U-shape, and a positioning filling plate 43 for limiting the rotation of the strength comparison pressure rod 42 is inserted into the upper part of the strength comparison pressure rod 42 inside the hinge seat 41. By inserting the positioning filling plate 43, the strength comparison pressure rod 42 can be prevented from rotating, and a single material to be measured can be set on the lower middle side of the strength comparison pressure rod 42, and the strength comparison pressure rod 42 is used to press the single material to perform bending performance data testing.

[0030] In this embodiment, Figure 6 As shown, the support seat adjustment bracket 6 includes a right support plate 61, a left support plate 62, an inclination adjustment shaft 63, an inclination positioning gear 64, an inclination adjustment screw sleeve 65 and an inclination adjustment screw 66. The lower ends of the right support plate 61 and the left support plate 62 are respectively fixed with an inclination adjustment shaft 63, and the inclination adjustment shaft 63 passes through the material support seat 5. The inclination positioning gear 64 that meshes with each other is fixed on the inclination adjustment shaft 63. The upper ends of the right support plate 61 and the left support plate 62 are respectively hinged with inclination adjustment screws 66. The inclination adjustment screws 66 on the same side are connected by the inclination adjustment screw sleeve 65. The longitudinal sections of the plates 61 and the left support plate 62 are triangles with the openings facing upwards. The right support plate 61 and the left support plate 62 are opened at different angles to adapt to the measurement of materials of different lengths. The total length of the inclination adjusting screw sleeve 65 and the inclination adjusting screw 66 can be adjusted by rotating the inclination adjusting screw sleeve 65, thereby achieving the purpose of adjusting the opening angle of the right support plate 61 and the left support plate 62. The inclination positioning gears 64 on the right support plate 61 and the left support plate 62 are meshed with each other. When one of the support plates rotates, the other support plate also rotates accordingly, so that the openings of the right support plate 61 and the left support plate 62 can always be kept facing upwards.

[0031] In this embodiment, Figure 7 As shown, the material clamping and fixing mechanism 7 includes a clamping seat plate 71, an isobaric clamping cylinder 72 and a clamping friction plate 73. At least three isobaric clamping cylinders 72 are vertically fixed on the clamping seat plate 71, and a clamping friction plate 73 is fixed on the telescopic shaft of the isobaric clamping cylinder 72. In this embodiment, the number of isobaric clamping cylinders 72 is 3, which are respectively arranged directly below and on both sides of the lifting pressure power mechanism 2. The isobaric clamping cylinder 72 drives the clamping friction plate 73 to move, and the material is pressed by the clamping friction plate 73 and the pressure head 4 to prevent the material from tilting left and right during the test. The pressure of the isobaric clamping cylinder 72 is constant, so the pressure test data minus the upper force of the isobaric clamping cylinder 72 is the bending resistance data of the material to be tested. When only one material is tested for compressive strength data, the material is supported by the middle isobaric clamping cylinder 72. When it is necessary to compare the bending strength of two materials, the material is supported by the two isobaric clamping cylinders 72 on both sides. The clamping friction plate 73 is provided with patterns for increasing friction.

[0032] Working process of the present invention:

[0033] During the working process of a precision part comparative flexural strength test device of the present invention, by rotating the inclination angle adjusting sleeve 65, the total length of the inclination angle adjusting sleeve 65 and the inclination angle adjusting screw rod 66 can be adjusted, so as to achieve the purpose of adjusting the opening angle between the right support plate 61 and the left support plate 62. When it is necessary to measure the flexural strength of a part, the positioning filling plate 43 is inserted into the gap between the strength comparison pressure rod 42 and the hinge seat 41 to limit the rotation of the strength comparison pressure rod 42. The two ends of the material are placed directly below the pressure head 4, so that the two ends of the material are fixed on the inner surface of the support plate. At the same time, the clamping friction plate 73 is driven by the equal-pressure clamping cylinder 72 and fixed at the lower end of the material. The lifting power motor 22 drives the lifting screw mechanism 21 to move, and the lifting screw mechanism 21 drives the pressure head 4 to descend. Finally, the material is bent by the strength comparison pressure rod 42. The pressure value of the pressure head 4 is measured by the pressure sensor, and the anti-bending data of the material is obtained by subtracting the jacking force of the equal-pressure clamping cylinder 72 from this data; when it is necessary to compare the flexural strengths of two materials, the positioning filling plate 43 is pulled out from the gap between the strength comparison pressure rod 42 and the hinge seat 41, and then the two materials are arranged on both sides of the pressure head 4 at equal distances. As the strength comparison pressure rod 42 is pressed down, when the material with weaker flexural strength will bend first, at this time the strength comparison pressure rod 42 will tilt, so that it can be compared and measured which material has stronger anti-bending ability.

[0034] A precision part comparative flexural strength test device of the present invention is provided with a strength comparison pressure rod 42 hinged on the pressure head 4, which can quickly distinguish the magnitudes of the flexural strengths of two components. When two materials are measured simultaneously, as the strength comparison pressure rod 42 is pressed down, when the material with weaker flexural strength will bend first, at this time the strength comparison pressure rod 42 will tilt, so that it can be compared and measured which material has stronger anti-bending ability. The two materials only need to be measured once, which improves the test efficiency and reduces the test cost.

[0035] By making the longitudinal section of the bearing seat adjusting bracket 6 triangular and supporting the end of the material through the inner inclined surface, the actual measurement length of the material to be measured can be kept unchanged, which can improve the measurement accuracy. At the same time, the material is clamped and fixed by the material clamping and fixing mechanism 7, which can prevent the material from sliding and improve the stability during the material measurement. The right support plate 61 and the left support plate 62 can open different angles to adapt to the measurement of materials with different lengths, which can improve the adaptability of the device. The inclination angle positioning gears 64 on the right support plate 61 and the left support plate 62 are meshed with each other, which can always keep the openings of the right support plate 61 and the left support plate 62 facing upward.

[0036] The above embodiments are illustrative of the present invention, not limiting the present invention. Any simple transformation of the present invention belongs to the protection scope of the present invention.

Claims

1. A precision part comparative flexural strength test device, characterized in that: It includes a lifting and stamping table (1), a lifting pressure power mechanism (2), a punch head (4), a material bearing seat (5), a bearing seat adjusting bracket (6) and a material clamping and fixing mechanism (7). A lifting pressure power mechanism (2) for pressing the material is vertically arranged on the lifting and stamping table (1). A punch head (4) is fixedly arranged at the telescopic end of the lifting pressure power mechanism (2). A material bearing seat (5) is arranged below the punch head (4). An upper part of the material bearing seat (5) is provided with a bearing seat adjusting bracket (6) with a triangular longitudinal section and adjustable angle for bearing the material. A material clamping and fixing mechanism (7) with a constant telescopic force in cooperation with the punch head (4) is arranged below the bearing seat adjusting bracket (6). The punch head (4) includes a hinge seat (41), a strength comparison pressure rod (42) and a connecting column body (44). The middle part of the strength comparison pressure rod (42) is hinged on the hinge seat (41). A connecting column body (44) is arranged above the hinge seat (41). The bearing seat adjusting bracket (6) includes a right support plate (61), a left support plate (62), an inclination angle adjusting shaft (63), an inclination angle positioning gear (64), an inclination angle adjusting sleeve (65) and an inclination angle adjusting screw rod (66). The lower ends of the right support plate (61) and the left support plate (62) are respectively fixedly provided with the inclination angle adjusting shaft (63). The inclination angle adjusting shaft (63) passes through the material bearing seat (5). Mutually meshing inclination angle positioning gears (64) are fixedly arranged on the inclination angle adjusting shaft (63). The upper ends of the right support plate (61) and the left support plate (62) are respectively hinged with the inclination angle adjusting screw rod (66). The inclination angle adjusting screw rods (66) on the same side are connected by the inclination angle adjusting sleeve (65). The longitudinal sections of the right support plate (61) and the left support plate (62) are triangles with openings facing upwards.

2. The precision part comparative bending strength test device according to claim 1, wherein: The lifting and stamping table (1) includes vertical rods (11), a ground connection fixing plate (12), a table board (13) and a tensile connection plate (14). The number of the vertical rods (11) is two. The upper ends of the vertical rods (11) are fixedly connected with the table board (13). A tensile connection plate (14) is arranged between the table board (13) and the vertical rods (11). The lower ends of the vertical rods (11) are fixedly provided with the ground connection fixing plate (12).

3. The precision part comparative flexural strength test device according to claim 1, wherein: The lifting pressure power mechanism (2) includes a lifting screw rod mechanism (21), a lifting power motor (22), a lifting connection head (23) and a guide rod (24). The screw rod in the lifting screw rod mechanism (21) is in transmission connection with the lifting power motor (22). The lower end of the telescopic rod of the lifting screw rod mechanism (21) is connected with the lifting connection head (23). Guide rods (24) are vertically fixedly arranged on both sides of the lifting connection head (23).

4. The precision part comparative flexural strength test device according to claim 3, characterized in that: Further included is a connecting bracket (3), and the connecting bracket (3) includes a lifting and fixing guide seat (31), a side fitting connecting plate (32), a bottom connecting plate (33) and a reinforcing connecting plate (34). Side fitting connecting plates (32) are respectively and fittingly fixed on both sides of the lifting and fixing guide seat (31). A bottom connecting plate (33) is fixedly provided at the lower end of the side fitting connecting plate (32). A reinforcing connecting plate (34) is arranged between the bottom connecting plate (33) and the side fitting connecting plate (32).

5. The precision part comparative flexural strength test device according to claim 4, characterized in that: The guide rod (24) passes through the lifting and fixing guide seat (31).

6. The precision part comparative flexural strength test device according to claim 1, wherein: Further included is a positioning filling plate (43). The hinge seat (41) is in an inverted U shape. A positioning filling plate (43) for restricting the rotation of the strength comparison pressure rod (42) is inserted into the upper part of the strength comparison pressure rod (42) inside the hinge seat (41).

7. The precision part comparative flexural strength test device according to claim 1, characterized in that: The material clamping and fixing mechanism (7) includes a clamping seat plate (71), an equal-pressure clamping cylinder (72) and a clamping friction plate (73). At least three equal-pressure clamping cylinders (72) are vertically and fixedly provided on the clamping seat plate (71). A clamping friction plate (73) is fixedly provided on the telescopic shaft of the equal-pressure clamping cylinder (72).

8. The precision part comparative flexural strength test device according to claim 7, characterized in that: The clamping friction plate (73) is provided with lines for increasing the friction force.

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