CN110376075B - Rotary bending fatigue test assembly and rotary bending fatigue test device - Google Patents
Rotary bending fatigue test assembly and rotary bending fatigue test device Download PDFInfo
- Publication number
- CN110376075B CN110376075B CN201910742976.9A CN201910742976A CN110376075B CN 110376075 B CN110376075 B CN 110376075B CN 201910742976 A CN201910742976 A CN 201910742976A CN 110376075 B CN110376075 B CN 110376075B
- Authority
- CN
- China
- Prior art keywords
- assembly
- seat
- clamping
- rotary
- motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005452 bending Methods 0.000 title claims abstract description 56
- 238000009661 fatigue test Methods 0.000 title claims abstract description 51
- 238000006073 displacement reaction Methods 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 13
- 230000008569 process Effects 0.000 claims abstract description 13
- 238000013519 translation Methods 0.000 claims description 14
- 238000009434 installation Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000013001 point bending Methods 0.000 abstract description 8
- 229910000831 Steel Inorganic materials 0.000 abstract description 6
- 239000010959 steel Substances 0.000 abstract description 6
- 238000005496 tempering Methods 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 description 20
- 238000010586 diagram Methods 0.000 description 10
- 230000007547 defect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000013067 intermediate product Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/20—Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/26—Investigating twisting or coiling properties
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0026—Combination of several types of applied forces
- G01N2203/0028—Rotation and bending
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
A rotational bending fatigue test assembly and apparatus, the assembly comprising a base assembly; the axial driving component is used for forming axial displacement power; the radial driving assembly moves on the base assembly and is used for sleeving part of the sample so as to apply radial power to the sample; the rotary driving assembly is arranged at one side of the axial driving assembly and is used for applying rotary power to the sample so as to drive the sample to rotate; the rotary driving assembly comprises a motor rotary seat assembly and a rotary driving assembly, wherein the motor rotary seat assembly is used for clamping one end of a sample and swinging in the horizontal direction so as to compensate the changing distance of the sample in the bending process; the clamping and fixing assembly is arranged on one side, far away from the rotary driving assembly, of the radial driving assembly, is connected with the axial driving assembly and is used for clamping the other end of the sample and receiving axial displacement power to move on the base assembly. According to the invention, the four-point bending horizontal loading mode is matched with the horizontal swinging follow-up structure of the rotary driving assembly, so that the success rate of the oil tempering steel wire fatigue test is improved, and the problem that the spring cannot be subjected to the fatigue test is solved.
Description
Technical Field
The present invention relates to a rotational bending fatigue test assembly and a rotational bending fatigue test apparatus.
Background
The four-point type rotating bending fatigue testing machine is an important instrument for detecting the rotating bending fatigue performance of materials.
The inventor of the application finds that in long-term research and development, the conventional four-point type rotating bending fatigue testing machine adopts a vertical structure, and has the following defects in the testing process: the stress of the sample is unbalanced, so that the maximum bending point is not positioned in the center of the fulcrum, test failure occurs frequently, and the test result does not meet the test requirement; the distance between the four bending points is not completely adjustable; the equipment is heavy, and the test clamping is troublesome; force value control and force load retention are unstable in the test process, and the value fluctuation is huge, for example, the fluctuation value is +/-5N in the range of 10-50N, the fluctuation value is +/-10% in the range of 50100N, and the fluctuation value is +/-5% in the range of 100500N. Because of the defects existing in the test process, the spring intermediate product, namely the oil tempered steel wire, is subjected to fatigue test by using the existing four-point rotary bending fatigue testing machine and frequently fails.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a rotating bending fatigue test assembly and a rotating bending fatigue test device.
The invention solves the technical problems by adopting a technical scheme that: a rotational bending fatigue test assembly, wherein the assembly comprises:
a base assembly;
one side of the axial driving component is in transmission connection with the base component and is used for forming axial displacement power;
the radial driving assembly is used for sleeving part of the sample so as to apply radial power to the sample;
the rotary driving assembly is arranged at one side of the axial driving assembly and is used for applying rotary power to the sample so as to drive the sample to rotate; the rotary driving assembly comprises a motor rotary seat assembly, wherein the motor rotary seat assembly is used for clamping one end of the sample and swinging in the horizontal direction so as to compensate the changing distance of the sample in the bending process;
the clamping and fixing assembly is arranged on one side, far away from the rotary driving assembly, of the radial driving assembly, one end of the clamping and fixing assembly is connected with the axial driving assembly, and the clamping and fixing assembly is used for clamping the other end of the sample and receiving the axial displacement power to move on the base assembly.
The other technical scheme adopted for solving the technical problems is as follows: a rotational bending fatigue test device, wherein the device comprises a frame and the rotational bending fatigue test assembly in the above embodiment, and the base assembly is disposed on the frame.
Compared with the prior art, the invention has the beneficial effects that: the invention solves the problem that the oil tempered steel wire, which is an intermediate product of the spring, cannot be subjected to fatigue test, thereby solving the problem that the spring cannot be subjected to fatigue test.
The invention adopts a four-point bending horizontal loading mode and a horizontal swinging follow-up structure of the rotary driving assembly, thereby greatly improving the success rate of the test.
According to the invention, through the swinging mode of the rotary driving assembly and the automatic fine adjustment function, and the rotation adjustment functions of the radial driving assembly, the first limiting rotating seat and the second limiting rotating seat in the clamping fixing seat, the clamped sample can be kept in a natural stressed state in the test process, namely, the highest point is positioned in the middle of the radial driving assembly, so that the success rate of the oil tempering steel wire fatigue test is improved.
The invention has an electric control system, can control the fluctuation range of the force value between two fulcrums to be within 3N in the process of dynamic test, and has the functions of changing real parameters, recording data and the like in the process of test.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the description of the embodiments will be briefly described below, in which:
FIG. 1 is a schematic view of a rotational bending fatigue test assembly according to an embodiment of the present invention;
FIG. 2 is a schematic side view of an embodiment of the rotational bending fatigue test assembly of FIG. 1;
FIG. 3 is a schematic view of the rotary drive assembly of FIG. 1;
FIG. 4 is a schematic cross-sectional view of the rotary drive assembly of FIG. 3;
FIG. 5 is a schematic view of the motor rotor assembly of FIG. 3;
FIG. 6 is a schematic view of the servo drive seat assembly of FIG. 3;
FIG. 7 is a schematic view of the radial drive assembly of FIG. 1;
FIG. 8 is a schematic side elevational view of the radial drive assembly of FIG. 7;
FIG. 9 is a schematic view of the clamp fixture assembly of FIG. 1;
FIG. 10 is a schematic side elevational view of the clip assembly of FIG. 9;
FIG. 11 is a schematic view of a rotational bending fatigue test apparatus according to an embodiment of the present application;
fig. 12 is a schematic side view of the rotary bending fatigue test apparatus shown in fig. 11.
Detailed Description
The invention will be further described with reference to the drawings and detailed description. The terms such as "upper", "lower", "left", "right", "middle" and "a" in the embodiments are merely for descriptive purposes, but are not intended to limit the scope of the invention in which the invention may be practiced, but rather the relative relationship of the terms may be modified or adapted without substantial modification to the technical context.
Referring to fig. 1 and 2, fig. 1 is a schematic structural view of an embodiment of a rotary bending fatigue test assembly according to the present invention, and fig. 2 is a schematic side structural view of an embodiment of the rotary bending fatigue test assembly shown in fig. 1. The disclosed rotational bending fatigue test assembly 100 includes a base assembly 11, an axial drive assembly 12, a radial drive assembly 13, a rotational drive assembly 14, and a clamp fixture assembly 15.
Specifically, one side of the axial driving component 12 is in transmission connection with the base component 11, so as to form axial displacement power.
The radial driving assembly 13 is used as a force value loading point in four-point bending, one end of the radial driving assembly 13 is arranged on the axial driving assembly 12, the other end of the radial driving assembly 13 is arranged on the base assembly 11, and the radial driving assembly 13 moves to a preset position on the base assembly 11 after receiving axial displacement power of the axial driving assembly 12. The radial driving assembly 13 is used for sleeving part of the sample and applying horizontal radial loading force value to the sample so as to apply radial power to the sample, and the sample receives radial acting force to deform and bend.
The rotation driving assembly 14 is disposed at one side of the axial driving assembly 12, and is used for applying rotation power to the sample to rotate the sample. The rotary drive assembly 14 includes a motor rotary seat assembly 41, and the motor rotary seat assembly 41 is used for clamping one end of the sample and swinging in the horizontal direction to compensate for the varying distance during bending of the sample. In the present embodiment, the horizontal swing here is a slight swing.
The clamping and fixing assembly 15 is arranged on one side, far away from the rotary driving assembly 14, of the radial driving assembly 13, one end of the clamping and fixing assembly 15 is connected with the axial driving assembly 12, the other end of the clamping and fixing assembly 15, used for clamping a sample, receives axial displacement power and moves on the base assembly 11.
Referring to fig. 3 to 5, fig. 3 is a schematic structural diagram of the rotary driving assembly shown in fig. 1, fig. 4 is a schematic sectional structural diagram of the rotary driving assembly shown in fig. 3, and fig. 5 is a schematic structural diagram of the motor rotary base assembly shown in fig. 3.
In one embodiment, the motor rotary base assembly 41 includes a motor rotary base 411, a first slide rail base 412, two motor rotary bottom side plates 413, a first bearing limiter 414, a first slide rail assembly 415, a translation stage 416, two first bearings 417, a first bearing housing 418, and a servo motor 419.
Specifically, the servo motor 419 is configured to rotate the sample, and the motor rotating seat 411 is provided with a first through hole 4111, where the first through hole 4111 is configured to be sleeved at one end of the sample. The first slide rail seat 412 is disposed opposite to the motor rotation seat 411, and the first slide rail seat 412 is provided with a second through hole (not shown) for penetrating the servo motor 419. Two motor rotation bottom side plates 413 are disposed between the first slide rail seat 412 and the motor rotation seat 411, two ends of each motor rotation bottom side plate 413 are respectively connected with two opposite ends of the first slide rail seat 412 and the motor rotation seat 411, and the motor rotation bottom side plates 413 can be connected with the first slide rail seat 412 and the motor rotation seat 411 through fasteners such as screws and pins.
The first bearing limiter 414 is disposed in the first through hole 4111 as a first fulcrum of four-point bending. The first sliding rail assembly 415 is disposed on a side of the first sliding rail seat 412 facing the motor rotation seat 411, and the first sliding rail assembly 415 and the first sliding rail seat 412 may be connected by a fastener such as a screw, a pin, or the like.
The translation stage 416 is disposed on the first sliding rail assembly 415 and disposed on a side facing the motor rotating seat 411, and the translation stage 416 is provided with a third through hole (not shown) for passing through the servo motor 419.
The first bearing housing 418 is disposed on a side of the translation stage 416 facing the motor rotary seat 411, and is disposed at an end far away from the base assembly 11. The first bearing housing 418 includes two receiving cavities (not shown) provided near both ends of the two motor rotation bottom side plates 413, each receiving cavity for receiving one first bearing 417. In a specific embodiment, the rotary driving assembly 14 further includes a servo driving seat assembly 141, a cushion block 142, a three-jaw chuck 143, a servo motor fixing block 144 and a second bearing 145, wherein the servo driving seat assembly 141 is in a frame shape, and is sleeved on the motor rotating seat 411, and the second bearing 145 is disposed between the motor rotating seat 411 and the servo driving seat assembly 141. Accordingly, the rotary drive assembly 14 may further include a bearing housing (not shown) for receiving the second bearing 145, the bearing housing being disposed between the motor rotary seat 411 and the servo drive seat assembly 141.
The pad 142 is disposed on a side of the servo driving seat assembly 141 facing the base assembly 11, and is used for connecting to the base assembly 11. In the present embodiment, the number of the pads 142 is two. The three-jaw chuck 143 is disposed between the motor rotary seat 411 and the servo motor 419, and one end of the three-jaw chuck 143 is connected to the motor rotary seat 411, the other end is connected to the servo motor 419, one end of the three-jaw chuck 143 is used for clamping one end of a sample, and one end of the sample passes through the first through hole 4111 to be connected to the three-jaw chuck 143. The servo motor fixing block 144 is disposed on the translation stage 416 and between the base assembly 11 and the translation stage 416, and the servo motor fixing block 144 abuts against the three-jaw chuck 143. The servo motor fixing block 144 is provided with a fourth through hole for penetrating the servo motor 419. The first slide rail mount 412 supports small amplitude oscillations of the load bearing servo motor mount 144.
When the radial driving assembly 14 in the rotating bending fatigue test assembly 100 loads the sample, the sample is subjected to bending deformation by radial acting force, and the first through hole 4111 sleeved on the sample is subjected to acting force generated by the sample, so that the motor rotary seat 411 swings in the horizontal direction by taking the second bearing 145 as a swinging fulcrum.
Since one end of the sample is clamped by the three-jaw chuck 143 after passing through the first through hole 4111, the sample is twisted about the first through hole 4111 as a fulcrum during bending to swing the three-jaw chuck 143, thereby slightly swinging the servo fixing block 144 in the horizontal direction. When the servo fixed block 144 swings in the horizontal direction, a certain displacement is generated, and the translation stage 416 moves to compensate the changing distance in the bending process of the sample, so that the sample is in a naturally stressed state.
Referring to fig. 6, fig. 6 is a schematic structural diagram of the servo driving seat assembly shown in fig. 3.
In one embodiment, the servo drive mount assembly 141 includes a servo drive base 1411, two support plate side plates 1412 and a drive motor bearing 1413, the servo drive base 1411 and the drive motor bearing 1413 being disposed opposite each other, the two support plate side plates 1412 being disposed between the servo drive base 1411 and the drive motor bearing 1413. In the present embodiment, the support plate side plate 1412 may be connected to the servo driver base 1411 and the drive motor bearing housing 1413 by fasteners such as screws, pins, and the like. The servo driving seat assembly 141 is used for bearing the motor rotating seat 411 and supporting the motor rotating seat 411 to swing.
The motor rotary seat 411 is provided with two protrusions (not shown), and the two protrusions are disposed on two sides of the servo driver base 1411 and the driving motor bearing seat 1413, which are close to the first through hole 4111. The servo driver base 1411 and the driving motor bearing 1413 are respectively provided with a through hole, two through holes are matched with the two protrusions, and a bearing sleeve for accommodating the second bearing 145 is arranged between the protrusions and the through holes. Referring to fig. 7 to 8, fig. 7 is a schematic structural diagram of the radial driving assembly shown in fig. 1, and fig. 8 is a schematic side structural diagram of the radial driving assembly shown in fig. 7.
In a particular embodiment, the rotational bending fatigue test assembly 100 may include two radial drive assemblies 13, each radial drive assembly 13 including an electric cylinder block 131, an electric cylinder adapter block 132, a first centering swivel block assembly 133, an electric cylinder 134, and a collar 135.
The electric cylinder block 131 is connected to the base assembly 11. The electric cylinder adapter 132 is disposed on a side of the electric cylinder seat 131 away from the base assembly 11, the electric cylinder adapter 132 includes an electric cylinder mounting portion 1321 and an electric cylinder adapter 1322, the electric cylinder mounting portion 1321 is connected with the electric cylinder seat 131, the electric cylinder adapter 1322 is disposed on a side of the electric cylinder mounting portion 1321 away from the electric cylinder seat 131, and the electric cylinder adapter 1322 includes a fifth through hole (not shown). The first aligning rotary seat assembly 133 and the electric cylinder 134 are disposed at two sides of the electric cylinder adapter 1322, and the first aligning rotary seat assembly 133 and the electric cylinder 134 are rotatably connected through a fifth through hole. The collar 135 is disposed between the first centering swivel assembly 133 and the fifth through hole.
The first centering swivel assembly 133 includes a first slot housing 1331, a first limit swivel 1332, a third bearing 1333, a second bearing stop 1334, a sensor screw 1335, and a force sensor 1336. The side of the first slot-shaped casing 1331 is an open end for accommodating the first limit rotating seat 1332. The second bearing stopper 1334 is disposed at the top end of the inner side of the first slot-shaped housing 1331, and is used for accommodating the third bearing 1333, and the third bearing 1333 is rotatably connected with the first limiting rotating seat 1332. The force value sensor 1336 is provided on the outer peripheral surface of the first groove-shaped housing 1331, and abuts the grommet 135. At least a portion of the sensor screw 1335 is disposed at a side of the first slot housing 1331 and sequentially passes through the force sensor 1336, the collar 135 and the fifth through hole to connect the first slot housing 1331 with the electric cylinder 134.
Each radial drive assembly 13 is a force loading point in four-point bending, and the electric cylinder 134 can provide stable thrust, and the force sensor 1336 and the electric system form closed-loop control. When the force value is loaded and bent, the second bearing limiting piece 1334 can be automatically adjusted along with the change of the bending radius in the test and bending process, so that the stress direction of the force value loading point is ensured to coincide with the connecting line of the point and the bending center.
Referring to fig. 9 to 10, fig. 9 is a schematic structural diagram of the clamping and fixing assembly shown in fig. 1, and fig. 10 is a schematic side structural diagram of the clamping and fixing assembly shown in fig. 9.
In one embodiment, the clamping fixture assembly 15 includes a clamping fixture 151, a clamping adapter 152, a support 153, and a second centering swivel assembly 154, wherein the clamping fixture 151 is coupled to the base assembly 11.
The clamping adapter 152 is arranged on one side of the clamping fixed seat 151, which is away from the base component 11, the clamping adapter 152 comprises a clamping installation portion 1521 and a clamping adapter portion 1522, the clamping installation portion 1521 is connected with the clamping fixed seat 151, and the clamping adapter portion 1522 is arranged on one side of the clamping installation portion 1521, which is away from the clamping fixed seat 151. The support 153 is disposed between the second centering swivel assembly 154 and the clamping adapter 1522.
The second aligning rotary seat assembly 154 includes a second groove-shaped housing 1541, a second limiting rotary seat 1542, a fourth bearing 1543, and a third bearing limiter 1544, where a side edge of the second groove-shaped housing 1541 is an open end for accommodating the second limiting rotary seat 1542. The third bearing limiter 1544 is disposed at the top end of the inner side of the second groove-shaped housing 1541, and is configured to accommodate the fourth bearing 1543, and the third bearing 1333 is rotationally connected with the first limiting rotation seat 1332.
The clamping fixture 15 is another fulcrum in four-point bending, and the clamping adapter 152 and the support 153 cooperate with the second centering swivel assembly 154 to form a stable fixture system that is primarily used to constrain the radial movement of the test during the test. The third bearing limiting part 1544 can be automatically adjusted along with the change of the bending radius when the test is bent, so that the stress direction of the force value loading point is ensured to coincide with the connecting line of the point and the bending center.
In one embodiment, the base assembly 11 includes a plurality of racks 111 and a base 112, the plurality of racks 111 are disposed on the base 112, and the gear 122 is engaged with the racks 111. The axial drive assembly 12 includes at least one axial motor (not shown) for forming an axial displacement motive force, at least one coupling (not shown) for mating with one coupling and one gear, and at least one gear 122. The at least one gear 122 is disposed on at least one connecting member, and the connecting member is connected to at least one of the pad 142, the electric cylinder block 131 and the clamping fixing base 151.
In this embodiment, the base assembly 11 includes two racks 111, the axial driving assembly 12 includes three axial motors, three connecting members and three gears 122, each gear 122 matches one axial motor and one connecting member, and the three connecting members are respectively connected to the cushion block 142, the electric cylinder block 131 and the clamping fixing base 151 by fasteners such as screws and pins.
In an embodiment, the base assembly 11 further includes a second sliding rail assembly 113, and the second sliding rail assembly 113 is disposed on a side of the rack 111 facing the radial driving assembly 13 and is fixed on the base 112. The second slide rail assembly 113 includes a plurality of slide blocks (not shown) and two slide rails (not shown), on which the plurality of slide blocks slide, the slide blocks being connected to at least one of the electric cylinder block 131 and the clamping fixing block 151. The radial driving component 13 and/or the clamping and fixing component 15 drive the sliding block to move on the sliding rail after receiving axial displacement power.
In this embodiment, the second sliding rail assembly 113 includes three sliding blocks, and the two electric cylinder bases 131 and the clamping fixing base 151 of the two radial driving assemblies 13 of the three sliding blocks are connected to two sliding rails in parallel.
The present invention provides a rotational bending fatigue test assembly 100 comprising a base assembly 11. And one side of the axial driving component 12 is in transmission connection with the base component 11 and is used for forming axial displacement power. And a radial driving assembly 13, wherein one end of the radial driving assembly 13 is arranged on the axial driving assembly 12, the radial driving assembly 13 receives axial displacement power to move on the base assembly 11, and the radial driving assembly 13 is used for sleeving part of the sample so as to apply radial power to the sample. The rotation driving assembly 14 is disposed at one side of the axial driving assembly 12, and is used for applying rotation power to the sample to rotate the sample. The rotary drive assembly 14 includes a motor rotary seat assembly 41, and the motor rotary seat assembly 41 is configured to clamp one end of a sample and swing in a horizontal direction. The clamping and fixing assembly 15 is arranged on one side, far away from the rotary driving assembly 14, of the radial driving assembly 13, one end of the clamping and fixing assembly 15 is connected with the axial driving assembly 12, the other end of the clamping and fixing assembly 15, used for clamping a sample, receives axial displacement power and moves on the base assembly 11. Through the motor rotary seat assembly 41 horizontal swinging in the rotary driving assembly 14 and the movement of the translation platform 416, the automatic adjusting function is realized by matching with the micro-swinging of the servo motor fixing block 144, the axial driving assembly 12 and the radial driving assembly 13 apply axial displacement power and radial power, and the four-point bending horizontal loading mode is formed by matching with the rotary adjusting function of the first limiting rotary seat 1332 and the second limiting rotary seat 1542, so that the clamped sample can be kept in a naturally stressed state in the test process, namely, the highest point is positioned in the middle of the radial driving assembly 14, and the success rate of the oil tempering steel wire fatigue test can be improved.
In addition to the above embodiments, the present application further provides a rotational bending fatigue test apparatus, referring to fig. 11 and 12, fig. 11 is a schematic structural diagram of an example of the rotational bending fatigue test apparatus of the present application, and fig. 12 is a schematic side structural diagram of the rotational bending fatigue test apparatus shown in fig. 11. The rotational bending fatigue test apparatus 500 of the present disclosure includes a frame 51 and a rotational bending fatigue test assembly 52.
Specifically, the rotational bending fatigue test assembly 52 includes a base assembly disposed on the frame 51.
And one side of the axial driving assembly is in transmission connection with the base assembly and is used for forming axial displacement power.
And one end of the radial driving assembly is arranged on the axial driving assembly, the radial driving assembly receives axial power and moves on the base assembly, and the radial driving assembly is used for sleeving part of the sample so as to apply radial power to the sample.
The rotary driving assembly is arranged on one side of the axial driving assembly and is used for applying rotary power to the sample so as to drive the sample to rotate. The rotary driving assembly comprises a motor rotary seat assembly, and the motor rotary seat assembly is used for clamping one end of the sample and swinging in the horizontal direction.
The clamping and fixing assembly is arranged on one side, far away from the rotary driving assembly, of the radial driving assembly, one end of the clamping and fixing assembly is connected with the axial driving assembly, the clamping and fixing assembly is used for clamping the other end of the sample, and axial displacement power is received to move on the base assembly.
In a specific embodiment, the device further includes a control box 53, a protection cover 54 and an indicator 55, wherein the control box 53 is disposed on the frame 51 to cover the rotating bending fatigue test assembly 52, and the protection cover 54 is disposed at one end of the frame 51 near the rotating driving assembly, and is used for electrically controlling and recording data of the structure in the device according to preset parameters. The indicator light 55 is disposed at one end of the frame 51 near the clamping and fixing assembly.
The specific embodiment of the rotational bending fatigue test assembly disclosed in this embodiment is similar to the above embodiment, and specific reference may be made to the above embodiment, and details thereof will not be described herein.
An electrical system is provided within the rotational bending fatigue test apparatus 500, and connects the shield 54, the base assembly, the axial drive assembly, the radial drive assembly, the rotational drive assembly, and the clamp fixture assembly.
When the device is used for testing, the testing process can comprise the following steps:
1. and setting the interval between the rotary driving assembly, the radial driving assembly and the clamping fixing seat.
2. Sequentially passing the sample through a clamping fixing seat, a radial driving assembly and a bearing limiting piece of a rotary driver; the sample is then clamped by a three jaw chuck.
3. The loading force value and the rotating speed are set by using the protective cover 54, the loading force value of the radial driving assembly is set, the sample is stressed to form four-point bending, and meanwhile, the motor drives the sample to rotate through the eight-jaw chuck.
4. The test specimen is subjected to fatigue fracture, and the test is ended.
The invention provides a rotary bending fatigue test device 500, which can improve the success rate of oil tempering steel wire fatigue test.
The above description is only of the preferred embodiments of the present invention, and is not intended to limit the invention in any way, and any simple modification, equivalent variations and adaptations of the above embodiments according to the technical principles of the present invention, which are within the scope of the technical solutions of the present invention, will be apparent to those skilled in the art without departing from the scope of the technical solutions of the present invention.
Claims (5)
1. A rotational bending fatigue test assembly, the assembly comprising:
a base assembly;
one side of the axial driving component is in transmission connection with the base component and is used for forming axial displacement power;
the radial driving assembly is used for sleeving part of the sample so as to apply radial power to the sample;
the rotary driving assembly is arranged at one side of the axial driving assembly and is used for applying rotary power to the sample so as to drive the sample to rotate; the rotary driving assembly comprises a motor rotary seat assembly, wherein the motor rotary seat assembly is used for clamping one end of the sample and swinging in the horizontal direction so as to compensate the changing distance of the sample in the bending process;
the clamping and fixing assembly is arranged on one side, far away from the rotary driving assembly, of the radial driving assembly, one end of the clamping and fixing assembly is connected with the axial driving assembly, and the clamping and fixing assembly is used for clamping the other end of the sample and receiving the axial displacement power to move on the base assembly; wherein,
the motor rotating seat assembly comprises a motor rotating seat, a first slide rail seat, two motor rotating bottom side plates, a first bearing limiting piece, a first slide rail assembly, a translation table, two first bearings, a first bearing sleeve and a servo motor, wherein the motor rotating seat is provided with a first through hole, and the first through hole is used for clamping one end of the sample; the first slide rail seat is arranged opposite to the motor rotating seat, and is provided with a second through hole for penetrating the servo motor; the two motor rotating bottom side plates are arranged between the first slide rail seat and the motor rotating seat, and two ends of each motor rotating bottom side plate are respectively connected with two opposite ends of the first slide rail seat and the motor rotating seat; the first bearing limiting piece is oppositely arranged in the first through hole; the first sliding rail assembly is arranged on one side of the first sliding rail seat, which faces the motor rotating seat; the translation platform is arranged on one side, facing the motor rotating seat, of the first sliding rail assembly, and is provided with a third through hole for penetrating the servo motor; the first bearing sleeve is arranged on one side of the translation stage, which faces the motor rotating seat, and is arranged at one end, which is far away from the base assembly, of the translation stage, the first bearing sleeve comprises two accommodating cavities, the two accommodating cavities are arranged at two ends, which are close to two motor rotating bottom side plates, of each accommodating cavity, and each accommodating cavity is used for accommodating one first bearing;
the rotary driving assembly further comprises a servo driving seat assembly, a cushion block, a three-jaw chuck, a servo motor fixing block and a second bearing, wherein the servo driving seat assembly is in a frame shape and sleeved on the motor rotating seat, and the second bearing is arranged between the motor rotating seat and the servo driving seat assembly; the cushion block is arranged on one side, facing the base assembly, of the servo driving seat assembly and is used for connecting the base assembly; one end of the three-jaw chuck is connected with the motor rotating seat, the other end of the three-jaw chuck is connected with the servo motor, and one end of the three-jaw chuck is used for clamping one end of the sample; the servo motor fixing block is arranged on the translation table and between the base assembly and the translation table, the servo motor fixing block is abutted to the three-jaw chuck, and a fourth through hole is formed in the servo motor fixing block and used for penetrating the servo motor;
the servo drive seat assembly comprises a servo drive base, two support plate side plates and a drive motor bearing seat, wherein the servo drive base and the drive motor bearing seat are oppositely arranged, and the two support plate side plates are arranged between the servo drive base and the drive motor bearing seat;
the rotary bending fatigue test assembly comprises two radial driving assemblies, wherein each radial driving assembly comprises an electric cylinder seat, an electric cylinder adapter seat, a first aligning rotary seat assembly, an electric cylinder and a lantern ring;
the electric cylinder seat is connected with the base assembly; the electric cylinder switching seat is arranged on one side, deviating from the base assembly, of the electric cylinder seat, the electric cylinder switching seat comprises an electric cylinder mounting part and an electric cylinder switching part, the electric cylinder mounting part is connected with the electric cylinder seat, the electric cylinder switching part is arranged on one side, deviating from the electric cylinder seat, of the electric cylinder mounting part, and the electric cylinder switching part comprises a fifth through hole; the first aligning rotary seat assembly and the electric cylinder are arranged on two sides of the electric cylinder switching part, and the first aligning rotary seat assembly and the electric cylinder are rotationally connected through the fifth through hole; the lantern ring is arranged between the first aligning rotating seat assembly and the fifth through hole;
the first aligning rotary seat assembly comprises a first groove-shaped shell, a first limiting rotary seat, a third bearing, a second bearing limiting piece, a sensor screw and a force value sensor; the side edge of the first groove-shaped shell is an open end and is used for accommodating the first limiting rotating seat; the second bearing limiting piece is arranged at the top end of the inner side of the first groove-shaped shell and is used for accommodating the third bearing, and the third bearing is rotationally connected with the first limiting rotating seat; the force value sensor is arranged on the outer peripheral surface of the first groove-shaped shell and is abutted against the lantern ring; at least part of the sensor screw is arranged on the side edge of the first groove-shaped shell and sequentially penetrates through the force value sensor, the lantern ring and the fifth through hole so as to connect the first groove-shaped shell with the electric cylinder;
the clamping fixing assembly comprises a clamping fixing seat, a clamping adapter seat, a support and a second aligning rotating seat assembly, and the clamping fixing seat is connected with the base assembly; the clamping adapter seat is arranged on one side, away from the base assembly, of the clamping fixing seat, the clamping adapter seat comprises a clamping installation part and a clamping adapter part, the clamping installation part is connected with the clamping fixing seat, and the clamping adapter part is arranged on one side, away from the clamping fixing seat, of the clamping installation part; the support is arranged between the second aligning rotary seat assembly and the clamping switching part;
the second aligning rotary seat assembly comprises a second groove-shaped shell, a second limiting rotary seat, a fourth bearing and a third bearing limiting piece, and the side edge of the second groove-shaped shell is an open end and is used for accommodating the second limiting rotary seat; the third bearing limiting part is arranged at the top end of the inner side of the second groove-shaped shell and used for accommodating the fourth bearing, and the third bearing is rotationally connected with the first limiting rotating seat.
2. The rotational bending fatigue test assembly of claim 1, wherein the base assembly comprises a plurality of racks and a base, a plurality of the racks being disposed on the base; the axial driving assembly comprises at least one axial motor, at least one connecting piece and at least one gear, wherein the axial motor is used for forming axial displacement power, and at least one axial motor is matched with one connecting piece and one gear; at least one gear is arranged on the connecting piece, and the connecting piece is connected with at least one of the cushion block, the electric cylinder seat and the clamping fixing seat; the gear is meshed with the rack.
3. The rotational bending fatigue test assembly of claim 2, wherein the base assembly further comprises a second slide rail assembly disposed on a side of the rack facing the radial drive assembly and secured to the base; the sliding rail assembly comprises a plurality of sliding blocks and two sliding rails, the sliding blocks slide on the sliding rails, and the sliding blocks are connected with at least one of the electric cylinder seat and the clamping fixing seat; and the radial driving assembly and/or the clamping and fixing assembly drive the sliding block to move on the sliding rail assembly after receiving the axial displacement power.
4. A rotational bending fatigue testing device, comprising a frame and the rotational bending fatigue testing assembly of any of claims 1-3, the base assembly being disposed on the frame.
5. The rotary bending fatigue test device of claim 4, further comprising a protective cover, a control box and an indicator light, wherein the protective cover is arranged on the frame to cover the rotary bending fatigue test assembly, and the control box is arranged at one end of the frame close to the rotary driving assembly and is used for electrically controlling structures in the device according to preset parameters and recording data; the indicator lamp is arranged at one end of the frame, which is close to the clamping and fixing assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910742976.9A CN110376075B (en) | 2019-08-12 | 2019-08-12 | Rotary bending fatigue test assembly and rotary bending fatigue test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910742976.9A CN110376075B (en) | 2019-08-12 | 2019-08-12 | Rotary bending fatigue test assembly and rotary bending fatigue test device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110376075A CN110376075A (en) | 2019-10-25 |
| CN110376075B true CN110376075B (en) | 2024-03-12 |
Family
ID=68259196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910742976.9A Active CN110376075B (en) | 2019-08-12 | 2019-08-12 | Rotary bending fatigue test assembly and rotary bending fatigue test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110376075B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112557224B (en) | 2021-02-25 | 2021-06-25 | 中国科学院地质与地球物理研究所 | Alternating stress fatigue test equipment |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3716215A1 (en) * | 1987-05-14 | 1988-12-01 | Fraunhofer Ges Forschung | Rotary bend (flexural) testing machine having a torsional loading device |
| JP2008203092A (en) * | 2007-02-20 | 2008-09-04 | Kobe Steel Ltd | Bending fatigue testing device |
| KR20120132831A (en) * | 2011-05-30 | 2012-12-10 | 현대제철 주식회사 | Rotating bending fatigue test for performing uniform load center |
| CN102866066A (en) * | 2012-09-17 | 2013-01-09 | 中国科学院力学研究所 | Rotating bending fatigue test device and method with axial load control function |
| CN108562429A (en) * | 2018-05-31 | 2018-09-21 | 西南交通大学 | Interference fit component fatigue experimental device based on rotoflector and test method |
| CN109827857A (en) * | 2019-03-22 | 2019-05-31 | 北京理工大学 | A kind of multi-parameter multiaxis fretting fatigue testing device and method |
| CN210571779U (en) * | 2019-08-12 | 2020-05-19 | 湖北万测试验设备有限公司 | Rotary bending fatigue test assembly and rotary bending fatigue test device |
-
2019
- 2019-08-12 CN CN201910742976.9A patent/CN110376075B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3716215A1 (en) * | 1987-05-14 | 1988-12-01 | Fraunhofer Ges Forschung | Rotary bend (flexural) testing machine having a torsional loading device |
| JP2008203092A (en) * | 2007-02-20 | 2008-09-04 | Kobe Steel Ltd | Bending fatigue testing device |
| KR20120132831A (en) * | 2011-05-30 | 2012-12-10 | 현대제철 주식회사 | Rotating bending fatigue test for performing uniform load center |
| CN102866066A (en) * | 2012-09-17 | 2013-01-09 | 中国科学院力学研究所 | Rotating bending fatigue test device and method with axial load control function |
| CN108562429A (en) * | 2018-05-31 | 2018-09-21 | 西南交通大学 | Interference fit component fatigue experimental device based on rotoflector and test method |
| CN109827857A (en) * | 2019-03-22 | 2019-05-31 | 北京理工大学 | A kind of multi-parameter multiaxis fretting fatigue testing device and method |
| CN210571779U (en) * | 2019-08-12 | 2020-05-19 | 湖北万测试验设备有限公司 | Rotary bending fatigue test assembly and rotary bending fatigue test device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110376075A (en) | 2019-10-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112540019B (en) | High-speed friction interface optical in-situ observation precise friction and wear testing machine | |
| CN110376075B (en) | Rotary bending fatigue test assembly and rotary bending fatigue test device | |
| CN113670757B (en) | Friction wear detection device | |
| CN210571779U (en) | Rotary bending fatigue test assembly and rotary bending fatigue test device | |
| CN210741751U (en) | Rotor dynamic balance testing device | |
| CN210293952U (en) | Anti-seismic support and hanger testing machine | |
| CN117419880A (en) | General test device for environmental reliability of aviation parts | |
| CN110057498B (en) | Device for balance test of booster-stage rotor of engine fan | |
| CN115389335A (en) | Rotary bending fatigue testing machine | |
| CN109655265B (en) | Magnetic suspension shafting protective bearing performance testing machine | |
| CN218856128U (en) | Crankshaft rotation and bolt tightening device | |
| CN110530716A (en) | A kind of fracture of composite materials toughness test test device | |
| CN109916604B (en) | Roller fatigue test device | |
| CN110000805A (en) | A kind of clamping device for the detection of New energy automobile motor gearbox offline | |
| CN211504586U (en) | Horizontal vibration test device | |
| CN112224810B (en) | Automatic centering feeding and discharging device for armature paint dripping treatment | |
| CN111157229A (en) | Rubber node triaxial fatigue test method and device | |
| CN219819520U (en) | Marine large-scale methanol engine camshaft axle bush installation frock | |
| CN218121630U (en) | Rotary bending fatigue testing machine | |
| CN214849475U (en) | Universal conductive sliding ring running and rotating platform | |
| CN214251890U (en) | Cable friction test equipment and cable torsional friction test equipment | |
| CN220271011U (en) | Stretching and twisting integrated machine for optical cable | |
| CN216116753U (en) | Shaft detection equipment for mechanical engineering | |
| CN218272064U (en) | Concrete shrinkage experimental device | |
| CN220462987U (en) | Stainless steel damper inner hole machining clamp |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |