CN103645025A - Three-direction-vibration testing machine based on cam mechanism - Google Patents
Three-direction-vibration testing machine based on cam mechanism Download PDFInfo
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- CN103645025A CN103645025A CN201310557266.1A CN201310557266A CN103645025A CN 103645025 A CN103645025 A CN 103645025A CN 201310557266 A CN201310557266 A CN 201310557266A CN 103645025 A CN103645025 A CN 103645025A
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Abstract
The invention relates to the technical field of mechanical devices and particularly relates to a vibration testing machine. Disclosed is a three-direction-vibration testing machine based on a cam mechanism. The three-direction-vibration testing machine includes an engine base, an adjustable-speed motor, a box body, a main vibration platform and a driving mechanism. The driving mechanism includes a cam mechanism, a driven guide rod A, a linear bearing and a driven guide rod B. The cam mechanism includes a cylindrical cam and a cam track groove. A transmission shaft of the cylindrical cam is connected with the adjustable-speed motor. One end of the driven guide rod A is arranged in the cam track groove and the other end is connected fixedly with a slide block of the linear bearing. One end of the driven guide B is connected with the slide block of the linear bearing and the other end is connected with an auxiliary vibration platform. A guide groove is arranged in the main vibration platform and the guide groove is arranged obliquely for 45 degrees in a motion direction. An X-direction guide rod is fixed on the auxiliary vibration platform. The X-direction guide rod slides relatively in the guide groove. Because the cam mechanism, which takes machinery as the main body, is used in the three-direction-vibration testing machine, operation and control are simple and interferences are not caused on a corresponding testing system.
Description
Technical field
The present invention relates to mechanical equipment technical field, relate in particular to a kind of vibration test machine.
Background technology
Vibration test machine is that analog equipment is at the various environment of manufacturing, assembling is transported and met with in the use execute phase, in order to identify whether product stands the ability of ambient vibration, for finding the testing equipment of the tests such as initial failure, the examination of simulation actual condition and structural strength.Be applicable to research, exploitation, QC, the manufacture of all trades and professions such as electronics, electromechanics, photoelectricity, locomotive, toy.
Conventional vibration test machine has: electric vibration testing bench, mechanical type vibration table and hydraulic vibration test-bed etc.When wherein, mechanical type vibration table is tested because of it, disturb little, control the advantage such as simple and be widely used in vibration test machine.But there is following defect in existing mechanical type vibration table: complex structure, bulky, installation and maintenance is inconvenient, oscillation trajectory is unstable etc.
Summary of the invention
The object of the invention is to, a kind of three-way vibration testing machine based on cam mechanism is provided, solve above technical matters.
Technical matters solved by the invention can realize by the following technical solutions:
Three-way vibration testing machine based on cam mechanism, comprise a support, described support is provided with a buncher, a casing, described casing is provided with principal oscillation platform, in described casing, be provided with the driving mechanism that drives described shaking platform vibration, it is characterized in that, described driving mechanism comprises a cam mechanism, a driven guide rod A, a linear bearing, a driven guide rod B, described cam mechanism comprises the cylindrical cam that is arranged in described casing, is arranged on the cam locus groove on described cylindrical cam, and the transmission shaft of described cylindrical cam connects described buncher;
One end of described driven guide rod A is arranged in described cam locus groove, and the other end is fixedly connected with the slide block of described linear bearing; One end of described driven guide rod B connects the slide block of described linear bearing, and the other end is connected with an auxiliary shaking platform;
Described principal oscillation platform is provided with a gathering sill, and described gathering sill is obliquely installed along 45 ° of direction of motion; On described auxiliary shaking platform, be fixed with an X-direction guide pole, described X-direction guide pole relative sliding in described gathering sill;
When the present invention works, the transmission shaft of buncher driving cam means rotates, because cylindrical cam is provided with cam locus groove, along with the rotation of cylindrical cam, the driven guide rod A in cam locus groove can produce along the vibration of Y-direction (left and right directions) certain track motion; Meanwhile, the groove depth of cam locus groove can be set by the progressive change of certain track, when driven guide rod A produces Y-direction vibration along moving in cam locus groove, also produce the vibration of Z direction (above-below direction) certain track motion.The vibration of Y-direction and Z direction can directly show on auxiliary shaking platform.Due to the setting of gathering sill in X, Y-direction, gathering sill is 1:1 at the movement locus of X and Y-direction, and when the vibration of auxiliary shaking platform generation Y-direction, under the effect of X-direction guide pole and gathering sill, directions X vibration also occurs principal oscillation platform.Now, directions X, Y-direction and Z direction are all vibrated, and have realized the object of three-way vibration.
In addition, the present invention is in the time need to realizing dissimilar oscillation trajectory, as long as change the cylindrical cam of dissimilar cam locus groove.
Described buncher preferably adopts servomotor, and described servomotor connects the transmission shaft of described cylindrical cam by a shaft coupling.Servomotor rotating speed can change corresponding vibration frequency, thereby realizes the vibration test of different frequency.
The end, one end of described driven guide rod A is embedded in described cam locus groove, to reduce working resistance by rolling bearing; The mode that the other end of described driven guide rod A is threaded connection is connected with the slide block of described linear bearing;
The mode that one end of described driven guide rod B is threaded connection is connected with the slide block of described linear bearing; The other end of described driven guide rod B and described auxiliary shaking platform are fastenedly connected.Under the control of buncher, cylindrical cam rotates, and driven guide rod A, slide block, driven guide rod B do the to-and-fro movement of Y-direction and Z direction together with auxiliary shaking platform.
Described casing comprises that the cabinet base, box side, the box cover that are arranged on support connect into a rectangular box; Described driving mechanism is arranged in described casing, and described transmission shaft stretches out in described box side, and described auxiliary shaking platform is arranged on described box cover top, and described principal oscillation platform is arranged on described auxiliary shaking platform top.
In order to guarantee Z direction when vibration steady operation, the present invention is also provided with two Z-direction moving equilibrium assemblies:
Also comprise a line slideway, a straight-line guide rail slide block, two groups of Z-direction moving equilibrium assemblies, described line slideway is horizontally set in described casing, and described straight-line guide rail slide block is connected with described line slideway horizontal slip; Described linear bearing is arranged on described slide block;
Described Z-direction moving equilibrium assembly adopts an elastic mechanism, and the two ends of described line slideway are arranged in described box side by two Z-direction moving equilibrium assemblies respectively.When driven guide rod A is with movable slider and driven guide rod B to do Z-direction motion, because line slideway is limited in Z-direction moving equilibrium assembly, has guaranteed the stable of Z-direction motion, and then guaranteed the steady-working state of principal oscillation platform when Z-direction is vibrated.
Described elastic mechanism comprises lower spring support bar, lower spring supporting plate, upper spring supporting plate, the upper spring support bar being arranged on from the bottom up successively in described box side, described lower spring support bar is arranged with lower balancing spring outward, the outer sheathed upper balancing spring of described upper spring support bar;
Two described elastic mechanisms are separately positioned in two relative described box sides, and the end of described line slideway is plugged between described lower spring supporting plate and described upper spring supporting plate.
Described principal oscillation platform is provided with a three-dimensional acceleration transducer, and the side of described support is provided with a Y-direction displacement transducer, and the rear portion of described support is provided with one group of Z, X-direction displacement transducer;
The signal output part of described three-dimensional acceleration transducer, described Y-direction displacement transducer, described Z, X-direction displacement transducer all connects a signal processing module, and described signal processing module connects a display module.
On described cylindrical cam, can be provided with two cam locus grooves, the parameter of two described cam locus grooves can be identical, and described cam connects described auxiliary shaking platform and described principal oscillation platform by described driving mechanism.Can carry out the vibration test of test products like this.
The parameter of two described cam locus grooves can be not identical yet, can carry out the vibration test of the different vibration parameters of test products.
Described support bottom is provided with shock insulation feet.Whole driving mechanism is arranged on support, and supports by vibration isolation feet, the impact of shielding system vibration on basic platform.
Beneficial effect: the present invention is based on cam mechanism and produce three-way vibration, under the driving and control of buncher, cam mechanism is realized the motion by certain track, and drives three driven members to be synchronized with the movement by cam locus, thus reach three directions synchronous, with track, vibrate.Structure of the present invention compared with simple, oscillation trajectory stable, volume is little, installation and maintenance are easy to use.Due to used take cam mechanism operation that machinery is main body, control simply, corresponding test macro is not disturbed.Especially aspect the formation and control of oscillation trajectory, its cost is well below the vibration test machine of other type.
Accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present invention;
Fig. 2 is the structural representation of driving mechanism of the present invention;
Fig. 3 is the vertical view of Fig. 2;
Fig. 4 is the structural representation of cam mechanism;
Fig. 5 is the vibration running orbit of vibration test machine of the present invention;
Fig. 6 is the structural representation of Z-direction moving equilibrium assembly of the present invention.
Embodiment
Technological means, the creation characteristic of realizing for the present invention, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
With reference to Fig. 1, Fig. 2, Fig. 3, the three-way vibration testing machine based on cam mechanism, comprises support 1, and support 1 is provided with buncher 2, casing, and buncher 2 preferably adopts servomotor.Casing is provided with principal oscillation platform 7, is provided with the driving mechanism that drives shaking platform vibration in casing, and driving mechanism comprises cam mechanism 4, driven guide rod A, linear bearing 5, driven guide rod B.
With reference to Fig. 4, cam mechanism 4 comprises the cylindrical cam 41 that is arranged in casing, is arranged on the cam locus groove 42 on cylindrical cam 41, and the transmission shaft of cylindrical cam 41 connects bunchers 2 by shaft coupling 3.The end, one end of driven guide rod A is embedded in cam locus groove 42 by rolling bearing, and the mode that the other end is threaded connection is fixedly connected with the slide block of linear bearing 5.The mode that one end of driven guide rod B is threaded connection connects the slide block of linear bearing 5, and the other end and auxiliary shaking platform 6 are fastenedly connected.Principal oscillation platform 7 is provided with gathering sill 81, and gathering sill 81 is obliquely installed along 45 ° of direction of motion; On auxiliary shaking platform 6, be fixed with X-direction guide pole 82, X-direction guide pole 82 is relative sliding in gathering sill 81.
When the present invention works, the transmission shaft of buncher 2 driving cam means 4 rotates, because cylindrical cam 41 is provided with cam locus groove 42, along with the rotation of cylindrical cam 41, the driven guide rod A in cam locus groove 42 can produce along the vibration of Y-direction (left and right directions) certain track motion; Meanwhile, the groove depth of cam locus groove 42 can be set by the progressive change of certain track, at driven guide rod A, along cam locus groove 42, in the interior generation Y-direction vibration of moving, also produce the vibration of Z direction (above-below direction) certain track motion.The vibration of Y-direction and Z direction can directly show on auxiliary shaking platform 6.With reference to Fig. 5, the present invention preferably adopts sinusoidal running orbit.Due to the setting of gathering sill 81 in XY direction, gathering sill 81 is 1:1 at the movement locus of X and Y-direction, and when the vibration of Y-direction occurs auxiliary shaking platform 6, under the effect of X-direction guide pole 82 and gathering sill 81, directions X vibration also occurs principal oscillation platform 7.Now, directions X, Y-direction and Z direction are all vibrated, and have realized the object of three-way vibration.In addition, the present invention is in the time need to realizing dissimilar oscillation trajectory, as long as change the cylindrical cam 41 of dissimilar cam locus groove 42.
With reference to Fig. 2, casing comprises that the cabinet base 91, box side 92, the box cover 93 that are arranged on support 1 connect into a rectangular box.Driving mechanism is arranged in casing, and transmission shaft stretches out in box side 92, and auxiliary shaking platform 6 is arranged on box cover 93 tops, and principal oscillation platform 7 is arranged on auxiliary shaking platform 6 tops.
With reference to Fig. 6, in order to guarantee Z direction when vibration steady operation, the present invention is also provided with two Z-direction moving equilibrium assemblies: also comprise line slideway 101, straight-line guide rail slide block 102, two groups of Z-direction moving equilibrium assemblies, line slideway 101 is horizontally set in casing, straight-line guide rail slide block 102 is connected with line slideway 101 horizontal slips, and linear bearing 5 is arranged on slide block.Z-direction moving equilibrium assembly adopts an elastic mechanism, and the two ends of line slideway 101 are arranged in box side 92 by two Z-direction moving equilibrium assemblies respectively.When driven guide rod A is with movable slider and driven guide rod B to do Z-direction motion, because line slideway 101 is limited in Z-direction moving equilibrium assembly, has guaranteed the stable of Z-direction motion, and then guaranteed the steady-working state of principal oscillation platform 7 when Z-direction is vibrated.
Elastic mechanism comprises lower spring support bar 103, lower spring supporting plate 104, upper spring supporting plate 105, the upper spring support bar 106 being arranged on from the bottom up successively in box side 92, the outer lower balancing spring 107, the outer sheathed upper balancing spring 108 of upper spring support bar 106 of being arranged with of lower spring support bar 103.Two elastic mechanisms are separately positioned in two relative box sides 92, and the end of line slideway 101 is plugged between lower spring supporting plate 104 and upper spring supporting plate 105.
With reference to Fig. 1, Fig. 3, principal oscillation platform 7 is provided with a three-dimensional acceleration transducer 110, and the side of support 1 is provided with Y-direction displacement transducer 111, and the rear portion of support is provided with Z, X-direction displacement transducer 112.The signal output part of three-dimensional acceleration transducer 110, Y-direction displacement transducer 111 and Z, X-direction displacement transducer 112 is all connected signal processing module, and signal processing module connects display module.
With reference to Fig. 4, on cylindrical cam 41, can be provided with two cam locus grooves 42, the parameter of two cam locus grooves 42 can be identical can be not identical yet, other structures are also symmetrical arranged, cylindrical cam 41 connects auxiliary shaking platform 6 and principal oscillation platform 7 by driving mechanism.When the parameter of two cam locus grooves is identical, by being connected of change driven guide rod A and two cam locus grooves, can not carry out the vibration test of the different vibration parameters of test products.
With reference to Fig. 1, support 1 bottom is provided with shock insulation feet 11.Whole driving mechanism is arranged on support 1, and supports by vibration isolation feet 11, the impact of shielding system vibration on basic platform.
More than show and describe ultimate principle of the present invention and principal character advantage of the present invention.The technician of the industry should understand the restriction that the present invention is not subject to above-mentioned using method; that in above-mentioned using method and instructions, describes just says principle of the present invention; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall into the claimed scope of the present invention in the claimed scope of the invention and defined by appending claims and equivalent thereof.
Claims (10)
1. the three-way vibration testing machine based on cam mechanism, comprise a support, described support is provided with a buncher, a casing, described casing is provided with principal oscillation platform, in described casing, be provided with the driving mechanism that drives described shaking platform vibration, it is characterized in that, described driving mechanism comprises a cam mechanism, a driven guide rod A, a linear bearing, a driven guide rod B, described cam mechanism comprises the cylindrical cam that is arranged in described casing, is arranged on the cam locus groove on described cylindrical cam, and the transmission shaft of described cylindrical cam connects described buncher;
One end of described driven guide rod A is arranged in described cam locus groove, and the other end is fixedly connected with the slide block of described linear bearing; One end of described driven guide rod B connects the slide block of described linear bearing, and the other end is connected with an auxiliary shaking platform;
Described principal oscillation platform is provided with a gathering sill, and described gathering sill is obliquely installed along 45 ° of direction of motion; On described auxiliary shaking platform, be fixed with an X-direction guide pole, described X-direction guide pole relative sliding in described gathering sill.
2. the three-way vibration testing machine based on cam mechanism according to claim 1, is characterized in that: described buncher adopts servomotor, and described servomotor connects the transmission shaft of described cylindrical cam by a shaft coupling.
3. the three-way vibration testing machine based on cam mechanism according to claim 1, is characterized in that: the end, one end of described driven guide rod A is embedded in described cam locus groove by rolling bearing; The mode that the other end of described driven guide rod A is threaded connection is connected with the slide block of described linear bearing;
The mode that one end of described driven guide rod B is threaded connection is connected with the slide block of described linear bearing; The other end of described driven guide rod B and described auxiliary shaking platform are fastenedly connected.
4. the three-way vibration testing machine based on cam mechanism according to claim 1, is characterized in that: described casing comprises that the cabinet base, box side, the box cover that are arranged on pedestal connect into a rectangular box; Described driving mechanism is arranged in described casing, and described transmission shaft stretches out in described box side, and described auxiliary shaking platform is arranged on described box cover top, and described principal oscillation platform is arranged on described auxiliary shaking platform top.
5. the three-way vibration testing machine based on cam mechanism according to claim 4, it is characterized in that: also comprise a line slideway, a straight-line guide rail slide block, two groups of Z-direction moving equilibrium assemblies, described line slideway is horizontally set in described casing, and described straight-line guide rail slide block is connected with described line slideway horizontal slip; Described linear bearing is arranged on described slide block;
Described Z-direction moving equilibrium assembly adopts an elastic mechanism, and the two ends of described line slideway are arranged in described box side by two Z-direction moving equilibrium assemblies respectively.
6. the three-way vibration testing machine based on cam mechanism according to claim 5, it is characterized in that: described elastic mechanism comprises lower spring support bar, lower spring supporting plate, upper spring supporting plate, the upper spring support bar being arranged on from the bottom up successively in described box side, described lower spring support bar is arranged with lower balancing spring outward, the outer sheathed upper balancing spring of described upper spring support bar;
Two described elastic mechanisms are separately positioned in two relative described box sides, and the end of described line slideway is plugged between described lower spring supporting plate and described upper spring supporting plate.
7. according to the three-way vibration testing machine based on cam mechanism described in any one in claim 1 to 6, it is characterized in that: described principal oscillation platform is provided with a three-dimensional acceleration transducer;
The side of described support is provided with a Y-direction displacement transducer;
The rear portion of support is provided with one group of Z, X-direction displacement transducer;
The signal output part of described three-dimensional acceleration transducer, described Y-direction displacement transducer, described Z, X-direction displacement transducer all connects a signal processing module, and described signal processing module connects a display module.
8. according to the three-way vibration testing machine based on cam mechanism described in any one in claim 1 to 6, it is characterized in that: on described cylindrical cam, be provided with two cam locus grooves, described cylindrical cam connects described auxiliary shaking platform and described principal oscillation platform by described driving mechanism.
9. the three-way vibration testing machine based on cam mechanism according to claim 8, is characterized in that: the parameter of two described cam locus grooves is not identical, can synchronously carry out the vibration test of the different vibration parameters of test products.
10. the three-way vibration testing machine based on cam mechanism according to claim 1, is characterized in that: described support bottom is provided with shock insulation feet.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310557266.1A CN103645025B (en) | 2013-11-11 | 2013-11-11 | Three-way vibration testing machine based on cam mechanism |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310557266.1A CN103645025B (en) | 2013-11-11 | 2013-11-11 | Three-way vibration testing machine based on cam mechanism |
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| CN103645025A true CN103645025A (en) | 2014-03-19 |
| CN103645025B CN103645025B (en) | 2016-05-25 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108044695A (en) * | 2018-01-05 | 2018-05-18 | 南京工程学院 | A kind of mechanical torsional oscillation platform based on space cam |
| CN108115755A (en) * | 2018-01-05 | 2018-06-05 | 南京工程学院 | A kind of mechanical torsional oscillation platform based on lever and cam mechanism |
| CN109000604A (en) * | 2018-04-11 | 2018-12-14 | 哈尔滨工程大学 | A kind of ice sheet vibration displacement measuring device |
| CN110207919A (en) * | 2019-05-14 | 2019-09-06 | 邱根发 | A kind of automobile DVD host resistance to shock test equipment |
| CN114160400A (en) * | 2022-01-20 | 2022-03-11 | 南京航空航天大学 | Vibration generating device with adjustable amplitude and frequency |
| CN114199756A (en) * | 2021-12-23 | 2022-03-18 | 上海工程技术大学 | Motion dummy power device and motion testing method |
| CN114252221A (en) * | 2021-12-23 | 2022-03-29 | 苏州浪潮智能科技有限公司 | Road transportation vibration testing device and method suitable for server |
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| JP2007327827A (en) * | 2006-06-07 | 2007-12-20 | Kurashiki Kako Co Ltd | Dynamic characteristic inspection device |
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| CN102004023A (en) * | 2010-12-20 | 2011-04-06 | 柳州五菱汽车有限责任公司 | Finished automobile vibration testing device and finished automobile vibration testing platform comprising same |
| CN202403885U (en) * | 2011-12-01 | 2012-08-29 | 南京工程学院 | Three-way vibrating table |
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Patent Citations (5)
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| JPS6067832A (en) * | 1983-09-24 | 1985-04-18 | Shimadzu Corp | Four-axis vibrator |
| JP2007327827A (en) * | 2006-06-07 | 2007-12-20 | Kurashiki Kako Co Ltd | Dynamic characteristic inspection device |
| CN201152805Y (en) * | 2008-01-23 | 2008-11-19 | 安徽华东光电技术研究所 | Travelling-wave tube component technological vibration platform |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108044695A (en) * | 2018-01-05 | 2018-05-18 | 南京工程学院 | A kind of mechanical torsional oscillation platform based on space cam |
| CN108115755A (en) * | 2018-01-05 | 2018-06-05 | 南京工程学院 | A kind of mechanical torsional oscillation platform based on lever and cam mechanism |
| CN108044695B (en) * | 2018-01-05 | 2019-06-14 | 南京工程学院 | A kind of mechanical torsional oscillation platform based on space cam |
| CN108115755B (en) * | 2018-01-05 | 2019-06-25 | 南京工程学院 | A kind of mechanical torsional oscillation platform based on lever and cam mechanism |
| CN109000604A (en) * | 2018-04-11 | 2018-12-14 | 哈尔滨工程大学 | A kind of ice sheet vibration displacement measuring device |
| CN110207919A (en) * | 2019-05-14 | 2019-09-06 | 邱根发 | A kind of automobile DVD host resistance to shock test equipment |
| CN110207919B (en) * | 2019-05-14 | 2020-12-04 | 东莞市飞音电子有限公司 | Anti-vibration performance testing equipment for automobile DVD host |
| CN114199756A (en) * | 2021-12-23 | 2022-03-18 | 上海工程技术大学 | Motion dummy power device and motion testing method |
| CN114252221A (en) * | 2021-12-23 | 2022-03-29 | 苏州浪潮智能科技有限公司 | Road transportation vibration testing device and method suitable for server |
| CN114160400A (en) * | 2022-01-20 | 2022-03-11 | 南京航空航天大学 | Vibration generating device with adjustable amplitude and frequency |
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|---|---|
| CN103645025B (en) | 2016-05-25 |
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