A device for testing the high-speed bending performance of precision parts

Abstract

The invention discloses a high-speed bending resistance test device for precision parts, wherein a lifting and pressing mechanism is arranged on a workbench, an inertia power transmission gear is arranged on the rotating shaft of an inertia power motor, the inertia power transmission gear drives the lifting and pressing mechanism to rise and fall through gear transmission, a power connection switching mechanism is arranged between the inertia power connection active roller and the rotating shaft, an active passive roller connection trigger mechanism is arranged between the inertia power connection active roller and the workbench, a counterweight inertia roller is arranged on the rotating shaft of the inertia power motor, and a one-way sliding limit mechanism is arranged between the inertia power connection active roller and the counterweight inertia roller. The invention can obtain the required kinetic energy as required, can meet the requirements of material testing with different strengths; can cut off the transmission connection between the inertia power motor and the counterweight inertia roller component, can prevent the inertia of reciprocating motion from damaging the noise of the inertia power motor; can quickly impact the components.

Description

Technical Field

[0001] The invention relates to the technical field of bending resistance testing equipment, in particular to the technical field of a high-speed bending resistance testing device for precision parts. Background Art

[0002] Bending performance test equipment is mainly used to test the deformation of parts under a certain pressure. Traditional compression performance test equipment uses hydraulic or screw components as a way of kinetic energy transmission and runs slowly. One reason is that in order to obtain the maximum pressure, the speed cannot be increased. Another reason is that high-speed impact causes great damage to the equipment and will seriously affect the life of the equipment. However, the reality is that the actual working environment of many components is under reciprocating impact, such as the impacted parts in fast-moving mechanical equipment, or facilities that may be threatened by explosions.

[0003] The patent number is CN201921849521.9, which is a device for testing the anti-bending performance of mechanical parts. The patent uses an electric telescopic rod (screw structure) as a power execution structure. The device can simply support two parts of the mechanical parts, and can perform anti-bending performance tests on these two parts of the mechanical parts, which is convenient for testing the anti-bending performance 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. The device cannot simulate the situation where parts are subjected to pressure under rapid impact. At the same time, the device cannot adjust the length of the pressing surface on the pressure head as needed, and cannot meet the testing needs of parts of different sizes. At the same time, the device does not solve the problem that the impact part and the power part cannot be separated during high-speed impact pressure testing, resulting in damage to the power part. Summary of the invention

[0004] The purpose of the present invention is to solve the problems in the prior art and to provide a high-speed bending performance test device for precision parts, which solves the problem that the existing bending performance test device cannot test the pressure of parts under rapid impact;

[0005] At the same time, it solves the problem that the existing bending resistance test device cannot adjust the length of the pressing surface on the pressing head as needed to meet the testing needs of components of different sizes;

[0006] At the same time, the problem of damage to the power part caused by the inability to separate the impact part and the power part during high-speed impact pressure testing in the existing bending resistance testing device is solved.

[0007] To achieve the above-mentioned purpose, the present invention proposes a high-speed bending resistance testing device for precision parts, comprising a workbench, a material lifting mechanism, a high-speed camera, a lifting and pressing mechanism, an inertial power bracket, an inertial power motor, an inertial power transmission gear, an inertial power connected passive roller, an inertial power connected active roller, a counterweight inertial roller, an active and passive roller connection trigger mechanism, a power connection switching mechanism, a synchronous linkage mechanism and a one-way sliding limit mechanism, a material lifting mechanism for lifting materials is arranged at the lower part of the workbench, a high-speed camera for photographing the process of compressing materials is arranged at the side of the material lifting mechanism, a lifting and pressing mechanism for pressurizing materials is arranged at the workbench, an inertial power bracket is arranged at the side of the lifting and pressing mechanism, an inertial power motor is fixedly arranged on one side of the inertial power bracket, and an inertial motor that rotates freely on the rotating shaft is arranged on the rotating shaft of the inertial power motor The inertial power transmission gear drives the lifting and lowering pressure mechanism to rise and fall through gear transmission; an inertial power transmission gear side is provided with an inertial power connection passive roller for inputting kinetic energy; the inertial power connection active roller and the inertial power connection passive roller are arranged oppositely; a power connection switching mechanism is arranged between the inertial power connection active roller and the rotating shaft; an active passive roller connection trigger mechanism for driving the inertial power connection active roller and the inertial power connection passive roller for transmission connection is arranged between the inertial power connection active roller and the workbench; a counterweight inertial roller that rotates freely on the rotating shaft is arranged on the rotating shaft of the inertial power motor; a synchronous linkage mechanism is respectively arranged between the inertial power connection active roller and the counterweight inertial roller and between the counterweight inertial roller and the counterweight inertial roller; a one-way sliding limit mechanism is arranged between the inertial power connection active roller and the counterweight inertial roller.

[0008] Preferably, the material lifting mechanism comprises a sliding guide rail, a guide rod, a sliding seat body, a spacing adjustment power motor, a spacing adjustment screw rod, a support column, a torsion support block and a material elastic fixing bracket, wherein a guide rod and a spacing adjustment screw rod are horizontally arranged between two ends of the sliding guide rail, and a spacing adjustment power motor which is transmission-connected to the spacing adjustment screw rod is fixed at the end of the sliding guide rail. Two sliding seat bodies are arranged on the sliding guide rail, and the guide rod and the spacing adjustment screw rod respectively pass through the sliding seat body, and a support column is vertically arranged on the sliding seat body, and a torsion support block is horizontally hinged at the upper end of the support column, and material elastic fixing brackets for fixing materials are respectively arranged on both sides of the upper end of the support column, and the material elastic fixing bracket comprises a material fixing rocker arm and a rubber rod, one end of the material fixing rocker arm is hinged to the side of the support column, and a torsion spring for pressing the material fixing rocker arm downward is arranged on the hinge shaft of the material fixing rocker arm, and a rubber rod is inserted into the other end.

[0009] Preferably, an anti-twist pad is embedded between the lower end of the torsion support block and the supporting column.

[0010] Preferably, the lifting and pressurizing mechanism includes an impact guide tube, a passive lifting and impact column, a pressure head and a pressure detection mechanism. The impact guide tube is fixed on the workbench, the passive lifting and impact column passes through the impact guide tube, a pressure head is fixed at the lower end of the passive lifting and impact column, a pressure detection mechanism for measuring pressure is arranged between the pressure head and the passive lifting and impact column, and a rack is vertically arranged on the passive lifting and impact column.

[0011] Preferably, the pressure head includes an articulated seat, a connecting column, a gear, an angle-adjusting rocker arm and a pressure plate. Angle-adjusting rocker arms are hingedly provided on both sides of the articulated seat. The angle-adjusting rocker arms are connected by gear transmission. The hooks at both ends of the pressure plate are hooked on the angle-adjusting rocker arms from the bottom. A connecting column is provided on the upper part of the articulated seat, and the connecting column is inserted into the lower end of the passive lifting impact column.

[0012] Preferably, the inertial power connected passive roller includes a passive roller body and a power connection hanging plate, a power connection groove is provided at the end of the passive roller body, one end of the power connection hanging plate is located in the power connection groove and is hinged to one side of the rotation direction of the passive roller body in the power connection groove, the other end of the power connection hanging plate extends out of the power connection groove and is attached to the outer edge of the other side of the power connection groove, the length direction of the hinge axis of the power connection hanging plate passes through the rotation center of the passive roller body, and a torsion spring is provided on the hinge axis of the power connection hanging plate to keep the end of the power connection hanging plate attached to the edge of the power connection groove.

[0013] Preferably, the inertial power connection active roller comprises an active roller body and a power connection protrusion, and one end of the active roller body facing the inertial power connection passive roller is provided with a power connection protrusion for driving the inertial power connection passive roller to rotate.

[0014] Preferably, the active and passive roller connection trigger mechanism includes an insulating seat, a conductive spring clip, an electromagnet and a conductive guide rail, the insulating seat is fixed on the workbench, the conductive spring clip is arranged on the insulating seat, the electromagnet is arranged at one end of the inertial power connection active roller facing the counterweight inertial roller, and the conductive guide rail is fixed on the arc surface of the inertial power connection active roller. The length of the conductive guide rail is based on the time within which the electromagnet can be fully extended within the contact time with the conductive spring clip after power is turned on, and the position of the conductive guide rail is based on the time that the inertial power connection passive roller and the inertial power connection active roller can move toward each other for the longest time.

[0015] Preferably, the power connection switching mechanism includes a motor power connection flip groove, a motor power connection plate and a rotating shaft linkage slot, the motor power connection flip groove is arranged at a position close to the rotation center of the inertial power connection active roller, the rotating shaft linkage slot is arranged on the rotating shaft of the inertial power motor, one end of the motor power connection plate is hinged in the motor power connection flip groove, and the other end is inserted in the rotating shaft linkage slot.

[0016] Preferably, the one-way sliding limit mechanism includes a one-way sliding limit hole and a one-way sliding limit rod, the one-way sliding limit hole is arranged at one end of the inertial power connection active roller facing the counterweight inertial roller, the one-way sliding limit rod is fixed on the counterweight inertial roller at one end facing the inertial power connection active roller, the one-way sliding limit rod includes a limit rod body and a limit pin, a limit groove is arranged on the outer side of the limit rod body along the length direction of the limit rod body, and the limit pin is arranged in the limit groove.

[0017] The beneficial effects of the present invention are as follows: the present invention can obtain the required kinetic energy as needed by utilizing the inertial energy storage principle, and can meet the testing requirements of materials of different strengths; the power connection switching mechanism is used to disconnect the transmission connection between the inertial power motor and the counterweight inertial roller component during the kinetic energy release process, thereby preventing the inertia of the reciprocating motion from damaging the noise of the inertial power motor; the material lifting mechanism can be used to effectively fix materials of different lengths and shapes without affecting the test results; the lifting and pressing mechanism can be used to quickly impact the components, and large pressure head contact surfaces of different lengths can be set according to the size of the components. The equipment can better meet the testing needs, and there are no hydraulic components, so maintenance is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0019] Figure 1 It is a three-dimensional schematic diagram of a high-speed bending resistance testing device for precision parts of the present invention;

[0020] Figure 2 It is a three-dimensional schematic diagram of the material lifting mechanism;

[0021] Figure 3 It is an exploded schematic diagram of the support column, the torsion support block, the anti-twist pad, and the material elastic fixing bracket;

[0022] Figure 4 It is a three-dimensional schematic diagram of the lifting and pressing mechanism;

[0023] Figure 5 It is an exploded schematic diagram of the lifting and pressing mechanism;

[0024] Figure 6 It is a three-dimensional schematic diagram of the pressure head;

[0025] Figure 7 It is an exploded schematic diagram of the pressure head;

[0026] Figure 8 It is a three-dimensional schematic diagram of the pressure detection mechanism;

[0027] Fig. 9 It is a three-dimensional schematic diagram of the inertia power transmission gear and the inertia power connection passive roller;

[0028] Fig.10 It is an exploded schematic diagram of the inertia power transmission gear and the inertia power connection passive roller;

[0029] Fig.11 It is a three-dimensional schematic diagram of the inertial power connection active roller;

[0030] Fig.12 It is a three-dimensional schematic diagram of a power connection switching mechanism and a one-way sliding limit mechanism;

[0031] Fig.13 It is an exploded schematic diagram of the power connection switching mechanism and the one-way sliding limit mechanism;

[0032] Fig.14 It is a three-dimensional schematic diagram of the active and passive roller connection trigger mechanism;

[0033] Fig.15 It is a schematic diagram of the assembly of the counterweight inertia roller, the synchronous linkage mechanism and the one-way sliding limit mechanism;

[0034] Fig.16 It is a schematic diagram of the linkage jack;

[0035] Fig.17 It is a three-dimensional schematic diagram of a one-way sliding limit rod;

[0036] Fig.18 1 is an exploded schematic diagram of a one-way sliding limit rod;

[0037] Fig.19 It is a schematic diagram of the shaft linkage slot.

[0038] In the figure: 1-workbench, 2-material lifting mechanism, 21-sliding guide rail, 22-guide rod, 23-sliding seat, 24-spacing adjustment power motor, 25-spacing adjustment screw, 26-support column, 27-torsion support block, 28-anti-torsion pad, 29-material elastic fixing bracket, 291-material fixing rocker arm, 292-rubber rod, 3-high-speed camera, 4-lifting and pressing mechanism, 41-impact guide tube, 42-passive lifting and impact column, 43-pressure head, 431 articulated seat, 432-connecting column, 433-gear, 434-angle adjustment rocker arm, 435-pressing plate, 44-pressure detection mechanism, 441-cylinder body, 442-piston column, 443-liquid pressure gauge, 5-inertial power bracket, 6-inertial power motor, 7-inertial power transmission Moving gear, 8-inertia power connection passive roller, 81-passive roller body, 811-power connection groove, 82-power connection hanging plate, 9-inertia power connection active roller, 91-active roller body, 92-power connection protrusion, 10-counterweight inertia roller, 11-active and passive roller connection trigger mechanism, 111-insulating seat, 112-conductive spring clip, 113-electromagnet, 114-conductive guide rail, 12-power connection switching mechanism, 121-motor power connection flip groove, 122-motor power connection plate, 123-rotating shaft linkage slot, 13-synchronous linkage mechanism, 131-linkage jack, 132-connecting transmission plug rod, 14-one-way sliding limit mechanism, 141-one-way sliding limit hole, 142-one-way sliding limit rod, 1421-limit rod body, 1422-limit pin. DETAILED DESCRIPTION

[0039] See also Figure 1The present invention discloses a high-speed bending resistance testing device for precision parts, comprising a workbench 1, a material lifting mechanism 2, a high-speed camera 3, a lifting and pressing mechanism 4, an inertial power bracket 5, an inertial power motor 6, an inertial power transmission gear 7, an inertial power connected passive roller 8, an inertial power connected active roller 9, a counterweighted inertial roller 10, an active and passive roller connection trigger mechanism 11, a power connection switching mechanism 12, a synchronous linkage mechanism 13 and a one-way sliding limit mechanism 14. The workbench 1 is provided with a material lifting mechanism 2 for lifting materials at the lower part, and a high-speed camera 3 for photographing a process of compressing materials is provided at the side of the material lifting mechanism 2. By shooting video or picture data with the high-speed camera 3, the process of material being compressed and the pressure change can be restored. ization process, so as to obtain the deformation amount of the material to be tested under what pressure, the workbench 1 is provided with a lifting and pressing mechanism 4 for applying pressure to the material, and the side of the lifting and pressing mechanism 4 is provided with an inertial power bracket 5, and one side of the inertial power bracket 5 is fixed with an inertial power motor 6, and the rotating shaft of the inertial power motor 6 is provided with an inertial power transmission gear 7 that rotates freely on the rotating shaft, and the inertial power transmission gear 7 drives the lifting and pressing mechanism 4 to rise and fall through the gear 433. The side of the inertial power transmission gear 7 is provided with an inertial power connection passive roller 8 for inputting kinetic energy, and the inertial power connection active roller 9 is arranged opposite to the inertial power connection passive roller 8, and the inertial power connection active roller 9 is connected to the rotating shaft. A power connection switching mechanism 12 is provided, through which the linkage state between the inertial power connection active roller 9 and the rotating shaft can be divided into two types, one is transmission connection, and the other is separation. An active passive roller connection trigger mechanism 11 is provided between the inertial power connection active roller 9 and the workbench 1 to drive the inertial power connection active roller 9 and the inertial power connection passive roller 8 for transmission connection. A counterweight inertial roller 10 that rotates freely on the rotating shaft is provided on the rotating shaft of the inertial power motor 6. Different types of counterweight inertial rollers 10 rotate at a certain speed, and the kinetic energy that can be released is determined. Therefore, during the test process, the number, weight and rotation speed of the counterweight inertial rollers 10 can be roughly determined according to the material of the material to be tested. In order to prevent the counterweight inertia roller 10 from sliding left and right on the rotating shaft, it is necessary to set limit flanges at both ends of the counterweight inertia roller 10 on the rotating shaft to limit the sliding of the counterweight inertia roller 10. One end of the flange is fixed to the rotating shaft by bolts, and the other end is attached to the end of the counterweight inertia roller 10. The purpose of setting the limit flange is to prevent the inertia power connection active roller 9 from sliding on the rotating shaft with the counterweight inertia roller 10 as support during the operation of the power connection switching mechanism 12. A synchronous linkage mechanism 13 is respectively arranged between the inertia power connection active roller 9 and the counterweight inertia roller 10 and between the counterweight inertia roller 10 and the counterweight inertia roller 10. A one-way sliding limit mechanism 14 is arranged between the inertia power connection active roller 9 and the counterweight inertia roller 10.

[0040] In this embodiment, Figure 2 and Figure 3 As shown, the material lifting mechanism 2 includes a sliding guide rail 21, a guide rod 22, a sliding seat body 23, a spacing adjustment power motor 24, a spacing adjustment screw rod 25, a support column 26, a torsion support block 27 and a material elastic fixing bracket 29. A guide rod 22 and a spacing adjustment screw rod 25 are transversely arranged between the two ends of the sliding guide rail 21. A spacing adjustment power motor 24 that is transmission-connected to the spacing adjustment screw rod 25 is fixed at the end of the sliding guide rail 21. The spacing adjustment power motor 24 drives the spacing adjustment screw rod 25 to rotate, and then drives the sliding seat body 23 to slide on the sliding guide rail 21, and finally achieves the purpose of adjusting the torsion support block 27 directly according to the distance, so as to adapt to materials to be tested of different lengths. Two sliding seat bodies 23 are arranged on the sliding guide rail 21, and the guide rod 22 and the spacing adjustment screw rod 25 pass through the sliding seat body 23 respectively. A screw sleeve is provided between the adjusting screw rods 25, and a support column 26 is vertically provided on the sliding seat body 23. A torsion support block 27 is laterally hingedly provided on the upper end of the support column 26. Elastic material fixing brackets 29 for fixing materials are provided on both sides of the upper end of the support column 26. The elastic material fixing brackets 29 include a material fixing rocker arm 291 and a rubber rod 292. One end of the material fixing rocker arm 291 is hinged to the side of the support column 26. A torsion spring for pressing the material fixing rocker arm 291 downward is provided on the hinge shaft of the material fixing rocker arm 291, and a rubber rod 292 is inserted at the other end. The material fixing rocker arm 291 is driven by the torsion spring to have elasticity, and the material is pressed by the rubber rod 292 to prevent the material from sliding left and right. At the same time, the material is fixed by the rubber rod 292. The rubber rod 292 is easy to replace after being damaged, and has little effect on the material test results. Figure 2 As shown, an anti-twist plate 28 is embedded between the lower end of the torsion support block 27 and the supporting column 26. When the test requires the torsion support block 27 to rotate as the material is deformed, there is no need to insert the anti-twist plate 28. When the test does not require the torsion support block 27 to rotate as the material is deformed, the anti-twist plate 28 needs to be inserted. Whether or not to insert the anti-twist plate 28 is determined based on the actual working scenario of the actual test model material.

[0041] In this embodiment, Figure 4 and Figure 5As shown, the lifting and pressing mechanism 4 includes an impact guide tube 41, a passive lifting and impact column 42, a pressure head 43 and a pressure detection mechanism 44. The impact guide tube 41 is fixed on the workbench 1, and the passive lifting and impact column 42 passes through the impact guide tube 41. The lower end of the passive lifting and impact column 42 is fixed with a pressure head 43. A pressure detection mechanism 44 for measuring pressure is arranged between the pressure head 43 and the passive lifting and impact column 42. A rack is vertically arranged on the passive lifting and impact column 42. The pressure detection mechanism 44 includes a cylinder body 441, a piston cylinder body 442 and a liquid pressure gauge 443. The cylinder body 441 is a cylindrical shape with a closed lower end. Hydraulic oil is set in the cylinder 441. A liquid pressure gauge 443 for measuring the pressure of the hydraulic oil in the cylinder 441 is connected to the outer side of the bottom of the cylinder 441. One end of the piston column 442 is inserted into the cylinder 441, and the other end extends out of the cylinder 441. The hydraulic oil is pressed by the pressure head 43 and the passive lifting impact column 42 to squeeze the cylinder 441 and the piston column 442 to generate pressure. The pressure of the hydraulic oil is then measured by the liquid pressure gauge 443, and finally the pressure measurement between solid parts is converted into the measurement of liquid pressure, which can prevent the damage and deformation of the mechanical pressure gauge by the impact. Figure 6 , Figure 7 and Figure 8 As shown, the pressure head 43 includes an articulated seat 431, a connecting column 432, a gear 433, an angle adjustment rocker arm 434 and a pressure plate 435. Angle adjustment rocker arms 434 are hingedly arranged on both sides of the articulated seat 431, and the angle adjustment rocker arms 434 are connected through gears 433. The hooks at both ends of the pressure plate 435 are hooked on the angle adjustment rocker arms 434 from the bottom. A connecting column 432 is arranged on the upper part of the articulated seat 431, and the connecting column 432 is inserted into the lower end of the passive lifting impact column 42. By adjusting the angle of the angle adjustment rocker arm 434, the distance between the lower ends of the angle adjustment rocker arms 434 can be adjusted, and then different lengths of pressure plates 435 can be matched to meet different needs. When the length of the pressure plate 435 is required to be longer, the angle between the angle adjustment rocker arms 434 is increased. When a shorter pressure plate 435 is required, the angle between the angle adjustment rocker arms 434 is reduced.

[0042] In this embodiment, Fig. 9 and Fig.10As shown, the inertial power connection passive roller 8 includes a passive roller body 81 and a power connection hanging plate 82, the end of the passive roller body 81 is provided with a power connection groove 811, one end of the power connection hanging plate 82 is located in the power connection groove 811, and is hinged on one side of the rotation direction of the passive roller body 81 in the power connection groove 811, the other end of the power connection hanging plate 82 extends out of the power connection groove 811 and is attached to the outer edge of the other side of the power connection groove 811, the length direction of the hinge axis of the power connection hanging plate 82 passes through the rotation center of the passive roller body 81, and the hinge axis of the power connection hanging plate 82 is provided with a means to keep the end of the power connection hanging plate 82 attached to the edge of the power connection groove 811 Torsion spring, when the power connection protrusion 92 is close to the power connection hanging plate 82, it will collide as soon as it touches. If the rotation speed is very fast, the passive roller body 81 will be driven to rotate at a point of contact. In this case, the two parts that are connected at high speed may be easily deformed and slipped. By making the power connection hanging plate 82 tilted and hinged in the power connection groove 811, when the power connection protrusion 92 on the inertial power connection active roller 9 hooks the power connection hanging plate 82, the power connection plate will be tilted to maintain the extended state, which will increase the contact and overlap length of the power connection hanging plate 82 and the power connection protrusion 92, which can effectively solve the problem of easy deformation and slipping of parts caused by insufficient contact when the parts rotate at relatively high speed. Fig.11 Fig.13 As shown, the inertial power connection active roller 9 includes an active roller body 91 and a power connection protrusion 92. The active roller body 91 is provided with a power connection protrusion 92 at one end facing the inertial power connection passive roller 8 for driving the inertial power connection passive roller 8 to rotate. The inertial power connection passive roller 8 and the inertial power connection passive roller 8 are first docked at high speed, so the inertial impact is very large. In order to make the connection strength large enough, two power connection protrusions 92 can be provided.

[0043] In this embodiment, Fig.12 Fig.14As shown, the active and passive roller connection trigger mechanism 11 includes an insulating seat 111, a conductive spring piece 112, an electromagnet 113 and a conductive guide rail 114. The insulating seat 111 is fixed on the workbench 1, the conductive spring piece 112 is arranged on the insulating seat 111, the electromagnet 113 is arranged at one end of the inertial power connection active roller 9 facing the counterweight inertial roller 10, and the conductive guide rail 114 is fixed on the arc surface of the inertial power connection active roller 9. The length of the conductive guide rail 114 is based on the time within which the electromagnet 113 can be fully extended within the contact time with the conductive spring piece 112 after power is turned on. The position of the conductive guide rail 114 is based on the maximum time for the inertial power connection passive roller 8 and the inertial power connection active roller 9 to move toward each other. When the conductive spring piece 112 is energized, the conductive The guide rail 114 rotates with the inertial power connection active roller 9, and turns to the point where the conductive spring sheet 112 contacts the conductive guide rail 114 and the electromagnet 113 is fully extended before separation. At the same time, by setting the position of the conductive guide rail 114, the position where the conductive guide rail 114 is energized is the point where the power connection protrusion 92 on the inertial power connection active roller 9 just passes the power connection hanging plate 82 on the inertial power connection passive roller 8. In this way, the power connection protrusion 92 rotates one circle and then passes the power connection hanging plate 82 again, which requires the inertial power connection active roller 9 to rotate one circle. In this way, the time when the inertial power connection active roller 9 and the inertial power connection passive roller 8 are driven to approach each other by the electromagnet 113 can be the longest, and the inertial power connection active roller 9 and the inertial power connection passive roller 8 can be brought close to each other to the maximum extent.

[0044] In this embodiment, Fig.13 and Fig.19 As shown, the power connection switching mechanism 12 includes a motor power connection flip groove 121, a motor power connection plate 122 and a shaft linkage slot 123. The motor power connection flip groove 121 is arranged at a position close to the rotation center of the inertial power connection active roller 9, and the shaft linkage slot 123 is arranged on the rotating shaft of the inertial power motor 6. One end of the motor power connection plate 122 is hinged in the motor power connection flip groove 121, and the other end is inserted in the shaft linkage slot 123. Under normal conditions, the rotating shaft is driven to rotate by the inertial power motor 6, and the rotating shaft is driven to rotate by the rotating shaft The motor power connection plate 122 and the inertial power connection active roller 9 are driven to rotate. When the inertial power connection active roller 9 slides close to the inertial power connection passive roller 8, the inertial power connection passive roller 8 and the inertial power connection active roller 9 are in contact with each other. The inertial power connection active roller 9 is subjected to a very large inertial impact. In order to ensure the safety of the inertial power motor 6, as the inertial power connection active roller 9 moves, the motor power connection plate 122 finally slides out of the shaft linkage slot 123, and finally the power transmission connection between the inertial power motor 6 and the inertial power connection active roller 9 is interrupted, which can effectively protect the inertial power motor 6. Fig.12 , Fig.13 , Fig.15 and Fig.16 As shown, the synchronous linkage mechanism 13 includes a linkage socket 131 and a connecting transmission plug rod 132. Between the adjacent components, one is provided with a linkage socket 131, and the other is provided with a connecting transmission plug rod 132. The connecting transmission plug rod 132 is inserted into the linkage socket 131, so that the two adjacent components can keep rotating synchronously. The adjacent components refer to the inertial power connecting the active roller 9 and the counterweight inertia roller 10 and the counterweight inertia roller 10 and the counterweight inertia roller 10; as shown Fig.12 , Fig.15 , Fig.17 and Fig.18 As shown, the one-way sliding limit mechanism 14 includes a one-way sliding limit hole 141 and a one-way sliding limit rod 142. The one-way sliding limit hole 141 is set at one end of the inertial power connection active roller 9 facing the counterweight inertial roller 10. The one-way sliding limit rod 142 is fixed on the counterweight inertial roller 10 at one end of the inertial power connection active roller 9. The one-way sliding limit rod 142 includes a limit rod body 1421 and a limit pin 1422. The outer side of the limit rod body 1421 is provided with a limit groove along the length direction of the limit rod body 1421. The limit pin 1422 is provided with a limit groove. Placed in the limiting groove, as the inertial power connection passive roller 8 and the inertial power connection active roller 9 approach each other, the one-way sliding limiting rod 142 is gradually pulled out from the one-way sliding limiting hole 141. In order to prevent the inertial power connection active roller 9 from retreating during the transmission connection with the inertial power connection passive roller 8, half of the limiting pin 1422 is thrown out of the one-way sliding limiting hole 141 under the action of centrifugal force. Under the blocking action of the limiting pin 1422, the one-way sliding limiting rod 142 cannot be inserted into the one-way sliding limiting hole 141 again, thereby achieving the effect of limiting the reset of the inertial power connection active roller 9.

[0045] Working process of the present invention:

[0046] In the working process of the high-speed bending resistance testing device for precision parts of the present invention, the material lifting mechanism 2 is first adjusted according to the length of the measured material, and the spacing adjustment power motor 24 drives the spacing adjustment screw rod 25 to rotate, thereby driving the sliding seat body 23 to slide on the sliding guide rail 21, and finally achieving the purpose of adjusting the torsion support block 27 to directly press the distance, and the material fixing rocker arm 291 is driven by the torsion spring to have a tendency to elasticity, and the material is pressed by the rubber rod 292, and then the rotating shaft is driven to rotate by the inertial power motor 6, and the rotating shaft drives the inertial power connection active roller 9 to rotate through the power connection switching mechanism 12, and the inertial power connection active roller 9 drives the counterweight inertial roller 10 to rotate through the synchronous linkage mechanism 13. When the counterweight inertial roller 10 rotates to the required speed, the conductive spring sheet 112 is energized, and the conductive spring sheet 112 transmits the electrical energy to the electromagnet 1 through the conductive guide rail 114. 13. The electromagnet 113 is extended under the action of electric energy, and supports the counterweight inertia roller 10 to make the inertia power connection active roller 9 approach the inertia power connection passive roller 8. When the power connection protrusion 92 is hung on the edge of the power connection hanging plate 82, the power connection hanging plate 82 flips and extends toward the power connection protrusion 92, and finally the overlapping contact area between the power connection protrusion 92 and the power connection hanging plate 82 is increased. The kinetic energy is transmitted to the inertia power connection passive roller 8 through the inertia power connection active roller 9. The inertia power connection passive roller 8 drives the inertia power transmission gear 7 to rotate. The inertia power transmission gear 7 drives the passive lifting impact column 42 to descend rapidly. The passive lifting impact column 42 drives the pressure head 43 to press against the material to be tested. At the same time, the liquid pressure gauge 443 displays the actual pressure value. The deformation of the material is photographed by the high-speed camera 3. The pressure value that the material is subjected to in different deformation states can be obtained through video data.

[0047] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention belongs to the protection scope of the present invention.

Claims

1. A high-speed bending performance testing device for precision parts, characterized by: The invention comprises a workbench (1), a material lifting mechanism (2), a high-speed camera (3), a lifting and pressing mechanism (4), an inertial power bracket (5), an inertial power motor (6), an inertial power transmission gear (7), an inertial power connected passive roller (8), an inertial power connected active roller (9), a counterweight inertial roller (10), an active and passive roller connection trigger mechanism (11), a power connection switching mechanism (12), a synchronous linkage mechanism (13) and a one-way sliding limit mechanism (14). The lower part of the workbench (1) is provided with a lifting mechanism for lifting the material. A material lifting mechanism (2) for pressing the material, a high-speed camera (3) for photographing the material compression process is arranged on the side of the material lifting mechanism (2), a lifting and pressing mechanism (4) for pressing the material is arranged on the workbench (1), an inertial power bracket (5) is arranged on the side of the lifting and pressing mechanism (4), an inertial power motor (6) is fixedly arranged on one side of the inertial power bracket (5), an inertial power transmission gear (7) that rotates freely on the rotating shaft is arranged on the rotating shaft of the inertial power motor (6), and the inertial power transmission gear (7) that rotates freely on the rotating shaft is arranged on the rotating shaft of the inertial power motor (6). The movable gear (7) drives the lifting and lowering pressure mechanism (4) to lift and lower through the gear (433). The side of the inertial power transmission gear (7) is provided with an inertial power connection passive roller (8) for inputting kinetic energy. The inertial power connection active roller (9) is arranged opposite to the inertial power connection passive roller (8). A power connection switching mechanism (12) is arranged between the inertial power connection active roller (9) and the rotating shaft. A driving mechanism (12) for driving the inertial power connection active roller (9) and the working table (1) is arranged between the inertial power connection active roller (9) and the working table (1). The inertia power connected active and passive rollers (8) are connected to the trigger mechanism (11), the rotating shaft of the inertia power motor (6) is provided with a counterweight inertia roller (10) which rotates freely on the rotating shaft, a synchronous linkage mechanism (13) is provided between the inertia power connected active roller (9) and the counterweight inertia roller (10) and between the counterweight inertia roller (10) and the counterweight inertia roller (10), and a one-way sliding limit mechanism (14) is provided between the inertia power connected active roller (9) and the counterweight inertia roller (10).

2. A high-speed bending performance testing device for precision parts according to claim 1, characterized in that: The material lifting mechanism (2) comprises a sliding guide rail (21), a guide rod (22), a sliding seat body (23), a spacing adjustment power motor (24), a spacing adjustment screw rod (25), a support column (26), a torsion support block (27) and a material elastic fixing bracket (29), wherein a guide rod (22) and a spacing adjustment screw rod (25) are transversely arranged between the two ends of the sliding guide rail (21), a spacing adjustment power motor (24) which is transmission-connected to the spacing adjustment screw rod (25) is fixedly arranged at the end of the sliding guide rail (21), two sliding seats (23) are arranged on the sliding guide rail (21), and the guide rod (22) and the spacing adjustment screw rod (25) are respectively passed through A sliding seat (23) is vertically provided with a support column (26), the upper end of the support column (26) is laterally hinged with a torsion support block (27), and both sides of the upper end of the support column (26) are respectively provided with material elastic fixing brackets (29) for fixing materials, the material elastic fixing bracket (29) comprises a material fixing rocker arm (291) and a rubber rod (292), one end of the material fixing rocker arm (291) is hinged to the side of the support column (26), a torsion spring for pressing the material fixing rocker arm (291) downward is provided on the hinge shaft of the material fixing rocker arm (291), and a rubber rod (292) is inserted into the other end.

3. A high-speed bending performance testing device for precision parts as claimed in claim 2, characterized in that: An anti-twist pad (28) is embedded between the lower end of the torsion support block (27) and the support column (26).

4. A high-speed bending performance testing device for precision parts according to claim 1, characterized in that: The lifting and pressurizing mechanism (4) comprises an impact guide tube (41), a passive lifting and impact column (42), a pressure head (43) and a pressure detection mechanism (44); the impact guide tube (41) is fixedly mounted on the workbench (1); the passive lifting and impact column (42) passes through the impact guide tube (41); a pressure head (43) is fixedly mounted at the lower end of the passive lifting and impact column (42); a pressure detection mechanism (44) for measuring pressure is arranged between the pressure head (43) and the passive lifting and impact column (42); and a rack is vertically arranged on the passive lifting and impact column (42).

5. A high-speed bending performance testing device for precision parts as claimed in claim 4, characterized in that: The pressure head (43) comprises an articulated seat (431), a connecting column (432), a gear (433), an angle adjustment rocker arm (434) and a pressure plate (435). The articulated seat (431) is articulated with angle adjustment rockers (434) on both sides. The angle adjustment rockers (434) are connected to each other by gears (433). The hooks at both ends of the pressure plate (435) are hooked on the angle adjustment rocker arms (434) from the bottom. The upper part of the articulated seat (431) is provided with a connecting column (432), and the connecting column (432) is inserted into the lower end of the passive lifting impact column (42).

6. A high-speed bending performance testing device for precision parts according to claim 1, characterized in that: The inertial power connection passive roller (8) comprises a passive roller body (81) and a power connection hanging plate (82); a power connection groove (811) is arranged at the end of the passive roller body (81); one end of the power connection hanging plate (82) is located in the power connection groove (811) and is hinged to one side of the rotation direction of the passive roller body (81) in the power connection groove (811); the other end of the power connection hanging plate (82) extends out of the power connection groove (811) and is attached to the outer edge of the other side of the power connection groove (811); the length direction of the hinge axis of the power connection hanging plate (82) passes through the rotation center of the passive roller body (81); and a torsion spring is arranged on the hinge axis of the power connection hanging plate (82) to keep the end of the power connection hanging plate (82) attached to the edge of the power connection groove (811).

7. A high-speed bending performance testing device for precision parts according to claim 1, characterized in that: The inertial power connection active roller (9) comprises an active roller body (91) and a power connection protrusion (92); one end of the active roller body (91) facing the inertial power connection passive roller (8) is provided with a power connection protrusion (92) for driving the inertial power connection passive roller (8) to rotate.

8. A high-speed bending performance testing device for precision parts as claimed in claim 1, characterized in that: The active and passive roller connection trigger mechanism (11) comprises an insulating seat (111), a conductive spring sheet (112), an electromagnet (113) and a conductive guide rail (114); the insulating seat (111) is fixedly mounted on the workbench (1); the conductive spring sheet (112) is arranged on the insulating seat (111); the electromagnet (113) is arranged at one end of the inertial power connection active roller (9) facing the counterweight inertial roller (10); the conductive guide rail (114) is fixedly mounted on the arc surface of the inertial power connection active roller (9); the length of the conductive guide rail (114) is based on the time within which the electromagnet (113) can be fully extended within the time of contact with the conductive spring sheet (112) after power is turned on; and the position of the conductive guide rail (114) is based on the time within which the inertial power connection passive roller (8) and the inertial power connection active roller (9) can move towards each other for the longest time.

9. A high-speed bending performance testing device for precision parts as claimed in claim 1, characterized in that: The power connection switching mechanism (12) comprises a motor power connection flip groove (121), a motor power connection plate (122) and a rotating shaft linkage slot (123); the motor power connection flip groove (121) is arranged at a position close to the rotation center of the inertial power connection active roller (9); the rotating shaft linkage slot (123) is arranged on the rotating shaft of the inertial power motor (6); one end of the motor power connection plate (122) is hinged in the motor power connection flip groove (121), and the other end is inserted in the rotating shaft linkage slot (123).

10. A high-speed bending performance testing device for precision parts according to claim 1, characterized in that: The one-way sliding limit mechanism (14) comprises a one-way sliding limit hole (141) and a one-way sliding limit rod (142); the one-way sliding limit hole (141) is arranged at one end of the inertial power connection active roller (9) facing the counterweight inertial roller (10); the one-way sliding limit rod (142) is fixed on one end of the counterweight inertial roller (10) facing the inertial power connection active roller (9); the one-way sliding limit rod (142) comprises a limit rod body (1421) and a limit pin (1422); a limit groove is arranged on the outer side of the limit rod body (1421) along the length direction of the limit rod body (1421); and the limit pin (1422) is arranged in the limit groove.

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