CN2370412Y - Fatigue tester for index rod - Google Patents
Fatigue tester for index rod Download PDFInfo
- Publication number
- CN2370412Y CN2370412Y CN 99211263 CN99211263U CN2370412Y CN 2370412 Y CN2370412 Y CN 2370412Y CN 99211263 CN99211263 CN 99211263 CN 99211263 U CN99211263 U CN 99211263U CN 2370412 Y CN2370412 Y CN 2370412Y
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- China
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- fatigue tester
- calibration bar
- power source
- sliding part
- tester according
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Abstract
The utility model relates to a fatigue tester for an index rod, comprising a power source, a force supply device, and an index rod seat. The power source is provided with a rotary shaft. The force supply device is provided with a flat plate, a push rod, and a spring. The rotation of the power source can drive the flat plate to rotate. Two ends of the top surface of the flat plate are respectively provided with one circular hole seat. Two ends of the push rod are sheathed in the circular hole seats. The middle of the push rod is provided with a pivot hole. The spring is arranged on one end of the push rod, and exerts elasticity to the pivot hole in the middle of the push rod. The index rod seat is positioned on the power supply device. When the fatigue tester for an index rod carries out test, one end of an index rod is fixed on the index rod seat, and the other end of the index rod is pivoted in the pivot hole of the push rod. The fatigue tester for an index rod has simple structure and uniform force application. The influence of earth gravity can be relieved.
Description
The utility model relates to a kind of calibration bar fatigue tester, refers to a kind of test machine of degree of fatigue of the calibration bar that is used for the test computer input media especially
Existing index input device uses in all kinds of input medias widely, for example control panel (Control panel), keyboard (Keyboard), distant empty device (Remote controldevice) etc. generally are set as: Genius mouse (Mouse), joystick (Joy Stick), Trackpad (Touch pad), trace ball (Track ball), calibration bar (Pointing Stick) etc.; Wherein, calibration bar generally is to utilize its stressed in a predetermined direction strain that produces (Strain) and the corresponding simulating signal that produces, again this signal output power supply brain equipment is used, it is to be connected on the computer with a calibration bar device, and the cylindricality calibration bar is the strain that produces operator's application of force direction by the lateral thrust on its top, and produce corresponding strain signal output, with the signal that moves as vernier for computer.
In the calibration bar goods, its fatigue strength is an important indicator, and the test of fatigue strength belongs to general material test category.
As everyone knows, material will instantaneous generation fracture stressed when surpassing tensile strength (Tensile strength).Perhaps, be subjected to one during less than the stress of its tensile strength if material is prolonged and repeated, material also can rupture.
Above-mentioned being in for a long time under the stress state, this kind fracture are appellation dynamic fatigue fracture (Dynamic fatigue fracture); If it is under the static stress for a long time, this kind fracture promptly is called static fatigue fracture (Static fatigue fracture).According to estimates, there is 90% material damage to lead the destruction that is produced because of in tired (no matter be static or dynamically) approximately.
In the prior art, the damage test of material is to carry out the sample actual measurement with fatigue tester, fragility short column moulding for the calibration bar class, because of its clamping is difficult for and size and the little relation of tensile strength, the traditional test machine often is not enough to be competent at, so testing fatigue all carries out with special equipment usually; People such as Rudisillt disclose a kind of special-purpose machines and tools that can be used for the calibration bar testing fatigue in the 5th, 544, No. 530 United States Patent (USP)s.
See also shown in Figure 1ly, it is the part schematic perspective view of existing calibration bar fatigue testers such as Rudisill; It is to drive a stationary shaft 13 by motor rotation to rotate, and then drive is rotated the elastic arm 15 that the one end is attached on the stationary shaft 13 with an eccentric distance.And at opposite side, calibration bar one end is fixed or is set on the axle collar 17 of centre, replace the other end of elastic arm 15 with its outer rim, make elastic arm 15 be pressed on the axle collar 17, be case of bending, and apply a predetermined pressure, and drive elastic arm 15 pressures are touched the peripherally pivoted of the axle collar 17 by stationary shaft 13 rotations to the index rod end, formation puts on the crooked application of force (Bending) of rotation on calibration bar 11 all directions, uses the testing fatigue that carries out calibration bar.
But there is following shortcoming in above-mentioned facility:
1, testing efficiency is low: when motor rotating band dynamic elasticity arm, can present instability or the uneven situation of the application of force of rotating easily because of its elastic arm, therefore only can test with lower rotating speed, influence test result.
2, the predetermined application of force is big or small unstable: because this fatigue tester is not considered action of centrifugal force, under the influence of rotating test and cantilever, centrifugal force can cause certain influence to acting force, makes former predetermined application of force size fixing.
3, the application of force is inhomogeneous: because the elastic arm horizontal positioned, do not consider the terrestrial gravitation influence, the result causes elastic arm to be positioned to be positioned at when upper the application of force when the next big.
It is a kind of simple in structure that the purpose of this utility model is to provide, and uniform force application can be exempted the calibration bar fatigue tester of terrestrial gravitation influence factor.
For the utility model that achieves the above object is taked following measure:
Calibration bar fatigue tester of the present utility model comprises:
One power source has a turning axle; It is characterized in that, also comprise:
One gives power apparatus, and have a flat board, and be located at the dull and stereotyped device that endwisely slips of going up and include a slideway spare and a sliding part, and a force application component; Force application component then when sliding part is positioned at the rotation center of force application apparatus, applies an axial force on sliding part, and the center of sliding part is provided with the pivot hole of a fixed index bar one end; The index mark seat of one fixed index bar is arranged at apart from the rotation center one of giving power apparatus apart from part.
Wherein, also can include one and be arranged at the induction installation of described power source below in order to the induction power source speed.
Wherein, also can include a controller, be electrically connected induction installation, in order to show and to control the rotating speed of power source.
Wherein, described power source can comprise a reduction gear in order to the reduction power source speed.
Wherein, the described power apparatus of giving can include a bearing, and bearing is located in the pivot hole of described sliding part.
Wherein, describedly can comprise also that to power apparatus at least one is in order to support the described supporting walls of giving the power apparatus side.
Wherein, described index pole socket can be a modularity member.
Wherein, described slideway spare can be a pair of relative rotation center and the hole seat that is provided with of a distance at interval, and described sliding part is one to be the push rod of slideway with the hole seat.
Wherein, described slideway spare can be a pair of chute by rotation center, and described sliding part is to be limited in the slide block that moves in the chute.
Wherein, described force application component can be a spring, and spring one end is fixed on the described sliding part, and the other end is located at the bearing on the force application apparatus.
Conjunction with figs. and embodiment are described in detail as follows architectural feature of the present utility model:
Description of drawings:
Fig. 1: be the part schematic perspective view of existing calibration bar fatigue tester;
Fig. 2: be the schematic perspective view of calibration bar fatigue tester of the present utility model preferred embodiment;
Fig. 3: the floor map of giving power apparatus of the utility model calibration bar fatigue tester;
Fig. 4: another gives the floor map of power apparatus the utility model calibration bar fatigue tester;
Fig. 5 A: the synoptic diagram of giving a position in the power apparatus operating state among Fig. 3;
Fig. 5 B: the synoptic diagram of giving another location in the power apparatus operating state among Fig. 3;
Fig. 6 A: for giving the synoptic diagram of a position in the power apparatus operating state among Fig. 4;
Fig. 6 B: for giving the synoptic diagram of another location in the power apparatus operating state among Fig. 4;
Fig. 7: for giving the top view of another embodiment of power apparatus.
As shown in Figure 2, it is the schematic perspective view of calibration bar fatigue tester one preferred embodiment of the present utility model; Calibration bar fatigue tester of the present utility model can be used for difform calibration bar is carried out testing fatigue, and it mainly is made up of in order to the induction installation and a controller 29 of sensing rotating speed a main body.
Aforementioned body includes a power source 21, and gives a power apparatus 23 and an index pole socket 25.Power source 21 is electrically connected to controller 29 and induction installation, and induction installation can include a sensor 271 and a disc 273.
When power source 21 rotations, the dish sheet 273 that drives on it rotates together, but and the rotating speed of sensor 271 sensing discs 273.The rotating speed of power source 21 is responded to by induction installation, and is also shown by controller 29 controls.
Have a flat board 231, a push rod 233 and a spring 235 for power apparatus 23.The stage casing part of push rod 233 forms the framework 245 of a hollow again, and is provided with the circular hole seat 237 of a pair of interval one distance on dull and stereotyped 231 again, and the two ends of push rod 233 can be inserted in the circular hole seat 237, and uses on dull and stereotyped 231 and slide.
In embodiment of the present utility model, circular hole seat 237 is in order to the track that endwisely slips as push rod 233, make push rod 233 axially do horizontal slip according to it on dull and stereotyped 231 surfaces, this axial trajectory is except that illustrated circular hole seat 237, it also can be chute (at this moment, push rod 233 two ends can form slide block), slide rail (at this moment, push rod 233 two ends can form slide) or other combination of similarly sliding.
As shown in Figure 2, dividing plate 30 that an interval usefulness can be set for power apparatus 23 and 21 of power sources again, the both sides of dividing plate 30 are fixed with a pair of supporting walls 241, by this extension that supporting walls 241 is made progress, can therebetween slide and establish index pole socket 25.
As shown in Figure 3, it is the end face synoptic diagram that one of calibration bar fatigue tester of the present utility model is given power apparatus.Dull and stereotyped 231 turning axles by power source drive and rotate, and when power source rotates, drive and give power apparatus 23 unitary rotation.
As shown in the figure, be inserted in respectively in the circular hole seat 237 of flat board 231 at push rod 233 two ends, in the middle of push rod 233, then form a pivot hole 239 in the framework 245 at place, spring 235 is arranged at 245 of a circular hole seat 237 of push rod 233 1 ends and frameworks, it is pushed the pivot hole 239 in the middle of the push rod 233 near another circular hole seat 237 1 sides to when drift.
As shown in Figure 4, it is another end face synoptic diagram to power apparatus of calibration bar fatigue tester of the present utility model.Give power apparatus 23 same tool flat boards 231, push rod 233 and spring 235.Be different from Fig. 3 and in power apparatus 23 parts of giving be that the framework 245 of the middle section of push rod 233 is replaced by a bearing 243, the internal ring wall internal diameter of bearing 243 at least should be greater than the cornerwise length of calibration bar.
Shown in Fig. 5 A and Fig. 5 B, its embodiment who is respectively the utility model calibration bar fatigue tester carries out the action synoptic diagram of calibration bar testing fatigue, and the action synoptic diagram of Fig. 5 B is the action synoptic diagram of hookup 5A.As shown in the figure, when when carrying out the testing fatigue of calibration bar 27, one end of calibration bar 27 is fixed on the index pole socket, and the other end of calibration bar is articulated in the pivot hole 239, and be the matching problem that produces in response to 239 possible size and shape differences of calibration bar 27 and pivot hole, then can be in calibration bar 27 end equipments one video disc 247, utilize position, a hole in the video disc 247 to be tight with at the periphery of calibration bar 27, the outer rim of utilizing video disc 247 again as and the contact point of the hole wall in pivot hole 239; For in response to the rotation of giving power apparatus 32, the optimum shape of video disc 247 be circular, and suitable change then can be done with the cross sectional shape of calibration bar 27 in position, hole of its centre, as shown in the figure, is the cross section that a square opening position cooperates a square calibration bar 27.
As previously mentioned, when spring 235 is drift, push the pivot holes 239 in the middle of the push rod 233 to a side near another circular hole seat 237; When device calibration bar 27 is with video disc 247 in pivot hole 239, because of the turning axle 211 of calibration bar 27 and power source 21 is preferably coaxial state, so calibration bar 27 can produce moving of push rod 233 side direction with inserting of video disc 247, use and on spring 235, produce a predetermined decrement, that is after device is finished, spring 235 can impose on the framework 245 of push rod 235 with a power F, force on the contact point (as the point of the A among Fig. 5 A) of video disc 247 and framework 245 by pivot hole 239 hole walls again, and by this configuration, the application of force F of spring 235 promptly is equal to and forces on the calibration bar 27, and produces bending stress by this application of force F on calibration bar.
Shown in Fig. 5 B, after device is finished in calibration bar 27 is being made a concerted effort device 23, and start power source 21 rotations to power apparatus 23, at this moment, give the i.e. rotation thereupon of the push rod 233 on the power apparatus 23, and be stationary state (except that calibration bar 27 ends are subjected to application of force F bending) because of calibration bar 27 and video disc 247 and index pole socket 25 link, and can produce the state outside the video disc 247 of being around in that rubs for the rotation of power apparatus 23, spring 235 applied force F promptly become a rotation urging; When giving power apparatus 23 by the inverse position clockwise half-twist among Fig. 5 A (or being docile and obedient 270 ° of clockwise rotations) and when becoming the state of Fig. 5 B, the point of application of spring 235 promptly advances to a B by the A that selects on the video disc 247 along the outer rim of video disc 247.
As previously mentioned, the utility model is by the rotation of giving power apparatus 23, the compression reaction power of the fixing and spring 234 of calibration bar 27, and by its symmetrical structure and level in the rotor shaft direction on ground, and make this practical calibration bar fatigue tester, the accurate testing fatigue effect that can obtain uniform force application, exempt centrifugal force and terrestrial gravitation influence.
Shown in Fig. 6 A and Fig. 6 B, its another embodiment that is respectively the utility model calibration bar fatigue tester carries out the operating state synoptic diagram of calibration bar testing fatigue, the operating state of the action synoptic diagram hookup 6A of Fig. 6 B; The state of operation among the figure such as Fig. 5 A and 5B, its difference be in this moment its framework be one to be fixedly arranged on the bearing 243 on the push rod 233, the inner ring surface of bearing 243 then forms above-mentioned pivot hole wall, and same, calibration bar 27 also is installed in the bearing 243 with a video disc 247; During operation,, and make the compression reaction power of spring 235 put on the end of calibration bar 27 by contacting of bearing 243 inner ring surfaces and video disc 247.Moreover, among this embodiment,, the intervention of bearing 243 is minimized because of making the friction effect to 247 of power apparatus 23 and video discs.
Shown in Fig. 5 A and Fig. 5 B, in Fig. 6 A and 6B, when giving power apparatus 23 by the inverse position clockwise half-twist among Fig. 6 A (or being docile and obedient 270 ° of clockwise rotations), and when becoming the state of Fig. 6 B, the point of application of spring 235 promptly advances to a B by the A that selects on the video disc 247 along the outer rim of video disc 247.
As previously mentioned, in the utility model, the combination of circular hole seat 237 and push rod 233, basically, can on dull and stereotyped 231, make the horizontal axis carriage that horizontal axis slides when constituting a rotation, but to cooperate predetermined spring to carry out the circumference axial force distribution of around the movement, this horizontal axis carriage can be the combination of circular hole seat 237 and push rod 233, also can be chute (at this moment, the two ends of push rod 233 can form slide block), slide rail (at this moment, the two ends of push rod 233 can form slide); As shown in Figure 7, it is the vertical view to power apparatus 23 another embodiment, its middle slideway 281 can be a restriction chute of giving prominence to or being located on the force application apparatus flat board, and be analogous to the slide block 283 of above-mentioned push rod 233, then be the block in the pivot hole, a tool center that is limited in the slideway 281 motion, then be provided with a spring 235 that is connected to slideway 281 sides at slide block 283 1 ends; Same as above, spring 235 crosses the rotation center of force application apparatus when drift, when moving to the rotation center of force application apparatus in slide block 283 and connecting a calibration bar (can see through a video disc 247), makes spring 235 produce a predetermined back stretch.
In the utility model, spring 235 is as a force application component, one end is located on slide block or the push rod, the other end then is located at the bearing on the force application apparatus, with when slide block or push rod are positioned at the rotation center of force application apparatus, apply application of force axial force on the calibration bar in being located at the pivot hole indirectly, can also other flexible members or device replace, as elastic member, flexural spring or the like.
Compared with prior art, the utlity model has following effect:
Calibration bar fatigue tester of the present utility model is simple in structure, and uniform force application can be exempted the influence of terrestrial gravitation.
The above is to utilize a preferred embodiment to describe architectural feature of the present utility model in detail, and unrestricted protection domain of the present utility model.
Claims (10)
1, a kind of calibration bar fatigue tester comprises:
One power source has a turning axle; It is characterized in that, also comprise:
One gives power apparatus, and have a flat board, and be located at the dull and stereotyped device that endwisely slips of going up and include a slideway spare and a sliding part, and a force application component; Force application component then when sliding part is positioned at the rotation center of force application apparatus, applies an axial force on sliding part, and the center of sliding part is provided with the pivot hole of a fixed index bar one end; The index mark seat of one fixed index bar is arranged at apart from the rotation center one of giving power apparatus apart from part.
2, calibration bar fatigue tester according to claim 1 is characterized in that, also includes one and is arranged at the induction installation of described power source below in order to the induction power source speed.
3, calibration bar fatigue tester according to claim 2 is characterized in that, also includes a controller, is electrically connected induction installation, in order to show and to control the rotating speed of power source.
4, calibration bar fatigue tester according to claim 1 is characterized in that, described power source comprises a reduction gear in order to the reduction power source speed.
5, calibration bar fatigue tester according to claim 1 is characterized in that, describedly includes a bearing to power apparatus, and bearing is located in the pivot hole of described sliding part.
6, calibration bar fatigue tester according to claim 1 is characterized in that, describedly comprises also that to power apparatus at least one is in order to support the described supporting walls of giving the power apparatus side.
7, calibration bar fatigue tester according to claim 1 is characterized in that, described index pole socket is a modularity member.
8, calibration bar fatigue tester according to claim 1 is characterized in that, described slideway spare is a pair of relative rotation center and the hole seat that is provided with of a distance at interval, and described sliding part is one to be the push rod of slideway with the hole seat.
9, calibration bar fatigue tester according to claim 1 is characterized in that, described slideway spare is a pair of chute by rotation center, and described sliding part is to be limited in the slide block that moves in the chute.
10, calibration bar fatigue tester according to claim 1 is characterized in that, described force application component is a spring, and spring one end is fixed on the described sliding part, and the other end is located at the bearing on the force application apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99211263 CN2370412Y (en) | 1999-05-26 | 1999-05-26 | Fatigue tester for index rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99211263 CN2370412Y (en) | 1999-05-26 | 1999-05-26 | Fatigue tester for index rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2370412Y true CN2370412Y (en) | 2000-03-22 |
Family
ID=34004246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99211263 Expired - Fee Related CN2370412Y (en) | 1999-05-26 | 1999-05-26 | Fatigue tester for index rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2370412Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107631946A (en) * | 2017-09-07 | 2018-01-26 | 河海大学 | A kind of testing machine pre-add power apparatus |
| CN109297724A (en) * | 2018-10-09 | 2019-02-01 | 株洲时代新材料科技股份有限公司 | A kind of the composite fatigue test device and method of V-type distance rod assembly |
-
1999
- 1999-05-26 CN CN 99211263 patent/CN2370412Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107631946A (en) * | 2017-09-07 | 2018-01-26 | 河海大学 | A kind of testing machine pre-add power apparatus |
| CN109297724A (en) * | 2018-10-09 | 2019-02-01 | 株洲时代新材料科技股份有限公司 | A kind of the composite fatigue test device and method of V-type distance rod assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |