High-precision metal material fatigue test device

Abstract

The utility model belongs to the technical field of metal material fatigue test, and particularly relates to a high-precision metal material fatigue test device which comprises a supporting table, a supporting plate and a servo motor, the side face of the supporting table is fixedly connected with the supporting plate, and the servo motor is fixedly installed at the bottom of the supporting table. The output end of the servo motor penetrates through the inner wall of the supporting table and is fixedly connected with a lead screw, a connecting groove is formed in the inner wall of the supporting plate, the outer side of the lead screw is in threaded connection with two sets of threaded sleeves, one ends of the two sets of threaded sleeves are fixedly connected with connecting rods, and the connecting rods are embedded into the inner side of the connecting groove. And the connecting rod can slide up and down along the inner side of the connecting groove. According to the heating device, a workpiece can be heated through the upper heating box and the lower heating box, heat loss is avoided under the action of attachment of the upper cover plate and the lower cover plate, the heating rate is increased, and rapid heating of the workpiece is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of metal material fatigue tests, and particularly relates to a high-precision metal material fatigue test device. Background Technique

[0002] Chinese Patent Publication No. CN218524498U discloses a high-temperature fatigue tensile test device for metal materials, which includes a base, a frame arranged on the base, and a fixture arranged on the frame. It also includes a heating box, a pressing member, and a driving mechanism for driving the opening and closing of the heating box; the heating box includes a lower heating box and an upper heating box, and cruciform grooves are formed on the opposite surfaces of the upper heating box and the lower heating box; a heat-insulating cotton is arranged on the lower heating box; the driving mechanism includes a lead screw, a guide rod, and a handwheel for driving the rotation of the lead screw; both the upper heating box and the lower heating box are provided with nuts matched with the lead screw and through holes slidably matched with the guide rod, and external threads are respectively arranged on the lead screw in opposite directions; the pressing member includes a hook, a bottom plate, and a handle hinged on the bottom plate; a rotating shaft is arranged through the bottom of the handle, and a buckling frame is arranged through the rotating shaft, and the buckling frame is buckled with the corresponding hook as the handle rotates. The utility model can quickly raise the temperature inside the heating device and reduce the energy consumption of heating.

[0003] During the actual use of this fatigue test device, the temperature fatigue test of metal materials is completed by heating the workpiece through the upper and lower heating boxes. Since the upper and lower heating boxes are exposed to the external environment during actual use, the heat loss of the upper heating box is fast and the heating rate is low, which is not conducive to the rapid heating of the workpiece.

[0004] Therefore, a high-precision metal material fatigue test device is needed to solve the above-mentioned problems. Content of the Utility Model

[0005] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a high-precision metal material fatigue test device, which effectively solves the problems raised in the above background technique.

[0006] To achieve the above object, the present utility model provides the following technical solutions: A high-precision fatigue test device for metal materials, comprising a support table, a support plate, and a servo motor. The side of the support table is fixedly connected with a support plate, and the bottom of the support table is fixedly installed with a servo motor. The output end of the servo motor penetrates through the inner wall of the support table and is fixedly connected with a lead screw. A connection groove is provided in the inner wall of the support plate. Two threaded sleeves are threadedly connected to the outside of the lead screw. One end of each of the two threaded sleeves is fixedly connected with an adapter rod. The adapter rod is embedded inside the connection groove and can slide up and down along the inside of the connection groove. The other ends of the two threaded sleeves are fixedly connected with an upper heating box and a lower heating box in sequence from top to bottom. The outside of the upper heating box is movably connected with an upper cover plate, and the outside of the lower heating box is movably connected with a lower cover plate. A contraction assembly is provided between the upper heating box and the upper cover plate, and a contraction assembly is also provided between the lower heating box and the lower cover plate.

[0007] Further, the two threaded sleeves are symmetric about the central position of the lead screw, and the rotation of the lead screw is used to drive the two threaded sleeves to approach or move away from each other.

[0008] Further, the surface of the upper cover plate is fixedly connected with an upper ventilation pipe communicating with its interior, and the surface of the lower cover plate is fixedly connected with a lower ventilation pipe communicating with its interior. The upper ventilation pipe and the lower ventilation pipe are both connected to the air outlet of an external blower through rubber hoses.

[0009] Further, the size of the upper heating box is the same as that of the lower heating box for heating the workpiece, the size of the upper cover plate is the same as that of the lower cover plate, and the upper cover plate and the lower cover plate can be in contact with each other to wrap the upper heating box and the lower heating box.

[0010] Further, the contraction assembly includes an electric push rod and a spring. A spring is fixedly connected between the upper cover plate and the upper heating box, and an electric push rod is fixedly connected between the upper cover plate and the upper heating box and located inside the spring.

[0011] Further, a spring is fixedly connected between the lower cover plate and the lower heating box, and an electric push rod is fixedly connected between the lower cover plate and the lower heating box and located inside the spring.

[0012] Further, T-shaped sliders are fixedly connected to the outside of both the upper heating box and the lower heating box, and T-shaped sliding grooves are provided in the inner walls of both the upper cover plate and the lower cover plate. The T-shaped sliders are located inside the T-shaped sliding grooves and can slide along the T-shaped sliding grooves.

[0013] Compared with the prior art, the beneficial effects of the present utility model are:

[0014] 1. For this utility model, the workpiece can be heated up by the upper heating box and the lower heating box. And under the action of the upper cover plate and the lower cover plate being fitted together, heat loss is avoided, the heating rate is increased, which is beneficial to quickly heating up the workpiece.

[0015] 2. For this utility model, wind is conveyed into the upper air-permeable pipe and the lower air-permeable pipe through hose connection, thereby accelerating the heat dissipation between the upper cover plate and the upper heating box, and accelerating the heat dissipation between the lower heating box and the lower cover plate, realizing rapid cooling and ensuring the normal use of the metal material temperature fatigue test device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings are used to provide further understanding of the present utility model, and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model, but do not constitute a limitation to the present utility model. In the drawings:

[0017] Figure 1 is a schematic structural view of the present utility model;

[0018] Figure 2 is a schematic structural view of the upper cover plate of the present utility model;

[0019] Figure 3 is a schematic structural view of the contraction assembly of the present utility model.

[0020] In the figure: 1. Support table; 2. Support plate; 3. Servo motor; 4. Lead screw; 5. Connection groove; 6. Thread sleeve; 7. Upper cover plate; 8. Upper air-permeable pipe; 9. Upper heating box; 10. Lower cover plate; 11. Lower air-permeable pipe; 12. Lower heating box; 13. Electric push rod; 14. Spring; 15. T-shaped chute; 16. T-shaped slider. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments; based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Embodiment, consists of Figures 1-3Provided, the present utility model discloses a high-precision fatigue test device for metal materials, including a support table 1, a support plate 2 and a servo motor 3. A support plate 2 is fixedly connected to the side of the support table 1, and a servo motor 3 is fixedly installed at the bottom of the support table 1. The output end of the servo motor 3 penetrates through the inner wall of the support table 1 and is fixedly connected to a lead screw 4. A connection groove 5 is provided in the inner wall of the support plate 2. Two threaded sleeves 6 are threadedly connected to the outside of the lead screw 4. One end of each of the two threaded sleeves 6 is fixedly connected to a connecting rod. The connecting rod is embedded in the inner side of the connection groove 5 and can slide up and down along the inner side of the connection groove 5. The other ends of the two threaded sleeves 6 are fixedly connected with an upper heating box 9 and a lower heating box 12 from top to bottom in sequence. An upper cover plate 7 is movably connected to the outside of the upper heating box 9;

[0023] Specifically, an upper ventilation pipe 8 communicating with its interior is fixedly connected to the surface of the upper cover plate 7, and a lower ventilation pipe 11 communicating with its interior is fixedly connected to the surface of the lower cover plate 10. Both the upper ventilation pipe 8 and the lower ventilation pipe 11 are connected to the air outlet of an external fan through rubber hoses;

[0024] A lower cover plate 10 is movably connected to the outside of the lower heating box 12. Specifically, the upper heating box 9 has the same size as the lower heating box 12 and is used for heating a workpiece. The upper cover plate 7 has the same size as the lower cover plate 10, and the upper cover plate 7 and the lower cover plate 10 can contact each other to wrap the upper heating box 9 and the lower heating box 12;

[0025] A contraction assembly is provided between the upper heating box 9 and the upper cover plate 7, and a contraction assembly is also provided between the lower heating box 12 and the lower cover plate 10. The two threaded sleeves 6 are symmetric about the central position of the lead screw 4. The rotation of the lead screw 4 is used to drive the two threaded sleeves 6 to approach or move away from each other;

[0026] Specifically, the contraction assembly includes an electric push rod 13 and a spring 14. A spring 14 is fixedly connected between the upper cover plate 7 and the upper heating box 9, and an electric push rod 13 is fixedly connected between the upper cover plate 7 and the upper heating box 9 and located inside the spring 14;

[0027] A spring 14 is fixedly connected between the lower cover plate 10 and the lower heating box 12, and an electric push rod 13 is fixedly connected between the lower cover plate 10 and the lower heating box 12 and located inside the spring 14;

[0028] T-shaped sliders 16 are fixedly connected to the outside of both the upper heating box 9 and the lower heating box 12. T-shaped sliding grooves 15 are provided in the inner walls of both the upper cover plate 7 and the lower cover plate 10. The T-shaped sliders 16 are located inside the T-shaped sliding grooves 15 and can slide along the T-shaped sliding grooves 15.

[0029] Working principle: First, fix the workpiece at the center position of the screw rod 4 through an external clamp, and drive the screw rod 4 to rotate clockwise through the servo motor 3, so that the upper and lower sets of threaded sleeves 6 of the screw rod 4 will move closer to each other, so that the upper heating box 9 and the lower heating box 12 are fitted with the workpiece, and then drive the shrinking component to shrink the electric push rod 13, so that the upper cover plate 7 will approach the upper heating box 9 and cover the upper heating box 9 on its inner side. Similarly, the lower cover plate 10 on the outer side of the lower heating box 12 will also approach the lower heating box 12 and cover the lower heating box 12 on its inner side. When the upper heating box 9 and the lower heating box 12 are fitted with the workpiece, the upper cover plate 7 and the lower cover plate 10 will conflict with each other, and cover the upper heating box 9 and the lower heating box 12 on their inner sides.

[0030] After completing the above steps, the workpiece can be heated by the upper heating box 9 and the lower heating box 12. At this time, under the action of the upper cover plate 7 and the lower cover plate 10, heat loss is avoided, the heating rate is increased, and it is beneficial to quickly heat up the workpiece.

[0031] After heating is completed, the counterclockwise rotation of the driving screw 4 can realize the separation of the two sets of threaded sleeves 6, so that the electric push rod 13 returns to its initial position. At this moment, under the connection of the T-shaped slide groove 15 and the T-shaped slider 16, the upper cover plate 7 and the upper heating box 9 will not be offset, and the lower cover plate 10 and the lower heating box 12 will not be offset, so that the upper cover plate 7 and the lower cover plate 10 will return to their initial positions, so that the upper heating box 9 and the lower heating box 12 are exposed to the external environment to dissipate their heat. At the same time, the external fan can be turned on to transmit wind power to the upper air vent 8 and the lower air vent 11 through the hose connection, thereby accelerating the heat dissipation between the upper cover plate 7 and the upper heating box 9, and accelerating the heat dissipation between the lower heating box 12 and the lower cover plate 10, achieving rapid cooling, and ensuring the normal use of the metal material temperature fatigue test device.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0033] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-precision metal material fatigue test device, comprising a support platform (1), a support plate (2) and a servo motor (3), wherein the side of the support platform (1) is fixedly connected to the support plate (2), and the bottom of the support platform (1) is fixedly installed with the servo motor (3), characterized in that: The output end of the servo motor (3) is fixedly connected to a screw rod (4) passing through the inner wall of the support platform (1); the inner wall of the support plate (2) is provided with a connecting groove (5); the outer side of the screw rod (4) is threadedly connected to two groups of threaded sleeves (6); one end of each of the two groups of threaded sleeves (6) is fixedly connected to a connecting rod, which is embedded in the inner side of the connecting groove (5) and can slide up and down along the inner side of the connecting groove (5); the other ends of the two groups of threaded sleeves (6) are fixedly connected to an upper heating box (9) and a lower heating box (12) in sequence from top to bottom; the outer side of the upper heating box (9) is movably connected to an upper cover plate (7); the outer side of the lower heating box (12) is movably connected to a lower cover plate (10); a shrinking component is provided between the upper heating box (9) and the upper cover plate (7); and a shrinking component is also provided between the lower heating box (12) and the lower cover plate (10).

2. A high-precision metal material fatigue testing device according to claim 1, characterized in that: The two groups of threaded sleeves (6) are symmetrical about the central position of the screw rod (4), and the rotation of the screw rod (4) is used to drive the two groups of threaded sleeves (6) to move closer to each other or away from each other.

3. A high-precision metal material fatigue testing device according to claim 1, characterized in that: The surface of the upper cover plate (7) is fixedly connected with an upper air vent (8) communicating with the interior thereof, and the surface of the lower cover plate (10) is fixedly connected with a lower air vent (11) communicating with the interior thereof. Both the upper air vent (8) and the lower air vent (11) are connected to the air outlet of an external fan via a rubber hose.

4. A high-precision metal material fatigue testing device according to claim 1, characterized in that: The size of the upper heating box (9) is the same as that of the lower heating box (12) and is used to heat the workpiece. The size of the upper cover plate (7) is the same as that of the lower cover plate (10). The upper cover plate (7) and the lower cover plate (10) can contact each other and are used to wrap the upper heating box (9) and the lower heating box (12).

5. A high-precision metal material fatigue testing device according to claim 1, characterized in that: The contraction assembly comprises an electric push rod (13) and a spring (14); the spring (14) is fixedly connected between the upper cover plate (7) and the upper heating box (9); and the electric push rod (13) is fixedly connected between the upper cover plate (7) and the upper heating box (9) and located inside the spring (14).

6. A high-precision metal material fatigue testing device according to claim 5, characterized in that: A spring (14) is fixedly connected between the lower cover plate (10) and the lower heating box (12), and an electric push rod (13) is fixedly connected between the lower cover plate (10) and the lower heating box (12) and located inside the spring (14).

7. A high-precision metal material fatigue testing device according to claim 1, characterized in that: The outer sides of the upper heating box (9) and the lower heating box (12) are fixedly connected with a T-shaped sliding block (16), the inner walls of the upper cover plate (7) and the lower cover plate (10) are provided with a T-shaped sliding groove (15), and the T-shaped sliding block (16) is located on the inner side of the T-shaped sliding groove (15) and can slide along the T-shaped sliding groove (15).

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