CN102818688B - Loading device and method of vibration test of imitating flexible member - Google Patents
Loading device and method of vibration test of imitating flexible member Download PDFInfo
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- CN102818688B CN102818688B CN201210306973.9A CN201210306973A CN102818688B CN 102818688 B CN102818688 B CN 102818688B CN 201210306973 A CN201210306973 A CN 201210306973A CN 102818688 B CN102818688 B CN 102818688B
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Abstract
The invention discloses loading device and method of a vibration test of imitating a flexible member. The loading device comprises an operation platform, a computer and a controller, wherein a displacement platform is arranged on the operation platform, a fixed bracket is arranged at the front part of the displacement platform and is provided with a pressure sensor, one end of the pressure sensor is connected with the fixed bracket, the other end of the pressure sensor is connected with a transfer rod which is tightly contacted with the flexible member during loading, and an alternating current servo motor which is connected with a wire of the controller is arranged at the back part of the displacement platform and connected with a screw rod mechanism which is fixed to the displacement platform through a coupling, the screw rod mechanism is provided with a dust cover, and the displacement platform is provided with a grating ruler which is connected with the wire of the controller. According to the loading device disclosed by the invention, the flexible member can be treated by constant loading through the loading device, so that the insufficients that exciting force supplied by the conventional vibration exciter has small vibration amplitude and output is difficult to adjust are compensated, loading is stable and is easy in control, motion accuracy and positioning accuracy are higher, and the practicability is better.
Description
Technical field
The present invention relates to a kind of charger and method, especially a kind of charger and method being applicable to simulation flexible member vibration test.
Background technology
Compliant mechanism adopts the kinematic pair in flexible member replacement traditional mechanism, avoid the challenges such as inter-agency gap, friction, wear and lubricate, have that compact conformation, volume are little, high reliability, be widely used in the fields such as miniature parallel robot, MEMS (micro electro mechanical system) (MEMS), microsensor, microposition machinery, microoperation be mechanical.Compliant mechanism is made up of rigid member, rigid hinge, flexible member and flexible hinge 4 elements, and wherein flexible member plays an important role in the function of mechanism.Because the natural mode of vibration of compliant mechanism is lower, the lower order resonance phenomenon occurred in the course of the work can cause larger harm to system; Meanwhile, the elastic vibration existed in system also can make motion occur distortion situation, the flexible member especially in mechanism.Therefore, be necessary to carry out vibration test to main flexible member in the design process of compliant mechanism, study the transmission characteristic and energy distribution situation vibrated in component, thus carry out effective control of structure optimization and vibration.Vibrator can provide the exciting force of different frequency, in vibration or strength test, have more application.The vibrator of current use is directly fixed on test specimen body or is connected with test specimen by special connecting link, and the two ends nut at connecting link after connecting is fixed, and loosens to prevent the connection caused due to vibration.But its type of attachment and the course of work are comparatively complicated, add the instability of loading and control difficulty, precision is lower; Vibrator is directly fixed on test specimen body and is not suitable for the lower flexible member of mode in addition; Most importantly, its power output or the more difficult adjustment of displacement, more difficult realize constant power or displacement load and load withdraw after carry out the analysis of vibration characteristics.
Summary of the invention
Technical matters: the object of the invention is for Problems existing in prior art, provides a kind of structure is simple, load stable, easy to control, kinematic accuracy and the higher simulation flexible member vibration test of positioning precision charger and method.
Technical scheme: a kind of charger of simulating flexible member vibration test of the present invention, comprise operating platform, computing machine, controller, it is 100N that described operating platform is provided with loading force maximal value, loading force minimum resolution is the displacement platform of 0.05N, the front portion of displacement platform is provided with fixed support, fixed support is provided with pressure transducer, the rear portion of displacement platform is provided with the AC servo motor be connected with controller wire, AC servo motor is connected with the screw mechanism be fixed on displacement platform through shaft coupling, screw mechanism is provided with dust cover, institute's translation stage is provided with the grating scale be connected with controller wire, two 5 ~ 10mm places, lateral extent edge of the anterior face of displacement platform are arranged with the equal platform threaded hole of multiple spacing, described fixed support is made up of base plate and the U-board be located on base plate, 5 ~ 10mm place, support bracket fastened base plate two lateral extent edge is arranged with the multiple support threaded holes identical with platform threaded hole interval location, the center, two ends of described pressure transducer is respectively provided with a threaded hole, and one end of pressure transducer is connected in support bracket fastened U-board by annular knurl hexagon socket head cap screw, and the other end is connected with the transmission lever loaded flexible member.
Before and after described displacement platform, symmetria bilateralis is provided with the L shape fixed head be fixed on the operational platform; The platform threaded hole that the two symmetrically arranged multiple spacing in 5 ~ 10mm place, lateral extent edge of the anterior face of institute's translation stage are equal is 4 ~ 6; The symmetrically arranged multiple support threaded holes identical with platform threaded hole interval location in 5 ~ 10mm place, described support bracket fastened base plate two lateral extent edge are 2; The model of described pressure transducer is GB-S10kg; The model of grating scale is MS30.23.MK.
The present invention utilizes the loading method of the simulation flexible member vibration test of above-mentioned charger:
First displacement platform is fixed on the operational platform, again flexible member to be loaded is fixed on the front portion of displacement platform, the fixed position of adjustment fixed support on displacement platform and be connected to the length of the transmission lever on pressure transducer, makes the loading position of flexible member and transmission lever also close contact point-blank;
The power loaded by computer settings or shift value, the heap(ed) capacity of setting is converted to voltage signal by the controller be connected with computing machine, the AC servo motor on rear drive displacement platform is amplified through driving power, thus drive displacement Platform movement, the fixed support be connected on displacement platform moves with displacement platform, and the transmission lever being simultaneously connected to the pressure transducer one end on fixed support loads flexible member; Power in loading procedure and displacement are directly recorded by the grating scale on pressure transducer and displacement platform respectively and pass to controller, computing machine is uploaded to after via controller process, relation curve between the power of the whole loading procedure of Real time vision and loading and shift value, and preserve curve map and data;
When displacement platform reaches power or the shift value of setting loading, send out reset command by computing machine to controller, displacement platform is resetted, thus complete whole loading procedure.
The power maximal value of described loading is 100N, and shift value is 50mm.
Beneficial effect: the charger of simulation flexible member vibration test of the present invention and method, mainly be applicable to the flexible member in compliant mechanism, as precisely locating platform, precision driver, end effector of robot, flexible member in high precision loading element, especially in parallel-guiding and flexible slide block mechanism two ends with the loading of the flexible member of stiffener, and can constant load be carried out, study the transmission and distribution situation vibrated in flexible member under known load or displacement, compensate for usual vibrator provides exciting force amplitude little, export the deficiency of more difficult adjustment.Its structure is simple, loads stable, easy to operate, easy to control, kinematic accuracy and positioning precision higher, power output or displacement regulate simple, have practicality widely.
Accompanying drawing explanation
Fig. 1 is the structure vertical view of charger of the present invention;
Fig. 2-1 is support bracket fastened left view of the present invention;
Fig. 2-2 is support bracket fastened vertical view of the present invention;
Fig. 3 is the loading principle block diagram of charger of the present invention;
Fig. 4 is the schematic diagram of the test component selected in embodiments of the invention.
In figure: 1-operating platform; 2-AC servo motor; 3-shaft coupling; 4-dust cover; 5-L shape fixed head; 6-hexagon socket head cap screw; 7-displacement platform; 8-grating scale; 9-platform threaded hole; 10-fixed support; 10-1-support bracket fastened base plate; 10-2-U-board; 11-support threaded hole; 12-hexagon socket head cap screw; 13-through hole; 14-annular knurl hexagon socket head cap screw; 15-pressure transducer; 16-transmission lever; 17-flexible member; 18-computing machine; 19-controller; 20-driving power; 21-test component; 21-1-rigid rod; 21-2-hinge.
Embodiment
Below in conjunction with accompanying drawing, one embodiment of the present of invention are further described:
As shown in Figure 1, the charger of simulation flexible member vibration test of the present invention, comprise operating platform 1, computing machine 18, controller 19, described operating platform 1 is provided with the displacement platform 7 that loading force maximal value is 100N, loading force minimum resolution is 0.05N, the front and back symmetria bilateralis of displacement platform 7 is provided with L shape fixed head 5, the L shape fixed head 5 be fixed on operating platform 1 and is fixed on operating platform 1 by hexagon socket head cap screw 6; Two 5 ~ 10mm places, lateral extent edge of the anterior face of displacement platform 7 are arranged with the equal platform threaded hole 9 of 4 ~ 6 spacing; The front portion of displacement platform 7 is provided with fixed support 10, fixed support 10 is made up of base plate 10-1 and the U-board 10-2 be located on base plate 10-1,5 ~ 10mm place, base plate 10-1 two lateral extent edge of fixed support 10 is arranged with 2 the support threaded holes 11 identical with platform threaded hole 9 interval location, and the base plate 10-1 of fixed support 10 is fixed on displacement platform 7 by hexagon socket head cap screw 12; Fixed support 10 is arranged pressure transducer 15, the center, two ends of pressure transducer 15 is respectively provided with a threaded hole, one end is connected on the U-board 10-2 of fixed support 10 by annular knurl hexagon socket head cap screw 14, the other end connects transmission lever 16, transmission lever 16 and flexible member 17 close contact during loading.The rear portion of described displacement platform 7 is provided with the AC servo motor 2 be connected with controller 19 wire, and AC servo motor 2 is connected with the screw mechanism be fixed on displacement platform 7 through shaft coupling 3, and screw mechanism is provided with dust cover 4; Displacement platform 7 is provided with the grating scale 8 be connected with controller 19 wire.The model of described pressure transducer 15 is GB-S10kg, and the model of grating scale 8 is MS30.23.MK; The effective travel of displacement platform 7 is 50mm, and repetitive positioning accuracy is ± 7um, and the power maximal value of loading is 100N, and minimum resolution is 0.05N, and shift value minimum resolution is 10um.
As shown in Fig. 2-1,2-2, fixed support 10 is made up of base plate 10-1 and U-board 10-2, and 5 ~ 10mm place, base plate 10-1 two lateral extent edge respectively has the center of 2 support threaded holes 11, U-board 10-2 to have through hole 13 for fixation pressure sensor 15.
As shown in Figure 3, the loading method of simulation flexible member vibration test of the present invention:
First displacement platform 7 is fixed on operating platform 1, again test component 21 to be loaded is fixed on the front portion of displacement platform 7, the fixed position of adjustment fixed support 10 on displacement platform 7 and be connected to the length of the transmission lever 16 on pressure transducer 15, makes the loading position of test component 21 and transmission lever 16 also close contact point-blank;
The power or shift value that load is set by computing machine 18, the heap(ed) capacity of setting is converted to voltage signal by the controller 19 be connected with computing machine 18, the AC servo motor 2 on rear drive displacement platform 7 is amplified through driving power 20, thus drive displacement platform 7 moves, the fixed support 10 be connected on displacement platform 7 moves with displacement platform 7, and the transmission lever 16 pairs of flexible members 17 being simultaneously connected to pressure transducer 15 one end on fixed support 10 load; The power maximal value loaded is 100N, and shift value is 50mm.Power in loading procedure and displacement are directly recorded by the grating scale 8 on pressure transducer 15 and displacement platform 7 respectively and pass to controller 19, via controller 19 is uploaded to computing machine 18 after processing, relation curve between the power of the computing machine 18 whole loading procedure of display and loading in real time and shift value, and preserve curve map and data;
When displacement platform 7 reaches power or the shift value of setting loading, give controller 19 reset commands by computing machine 18, displacement platform 7 is resetted, thus completes whole loading procedure.
The test component 21 that flexible member 17 in this example selects Linear cut mode to process simulates the loading with the flexible member of stiffener of two ends in parallel-guiding and flexible slide block mechanism.As shown in Figure 4, the rapidoprint that test component 21 is selected is steel spring plate 65Mn, elastic modulus E=210GPa, Poisson ratio
u=0.3, adopt the entirety that wire cutting method is processed into, form primarily of rigid rod 21-1 and hinge 21-2, rigid rod 21-1 is of a size of: length 60mm, width 20mm, thickness 2mm; Hinge 21-2 is of a size of: length 10mm, width 20mm, thickness 0.8mm.
Claims (1)
1. simulate the charger of flexible member vibration test for one kind, comprise operating platform (1), computing machine (18), controller (19), it is characterized in that: it is 100N that described operating platform (1) is provided with loading force maximal value, loading force minimum resolution is the displacement platform (7) of 0.05N, the front portion of displacement platform (7) is provided with fixed support (10), fixed support (10) is provided with pressure transducer (15), the rear portion of displacement platform (7) is provided with the AC servo motor (2) be connected with controller (19) wire, AC servo motor (2) is connected with the screw mechanism be fixed on displacement platform (7) through shaft coupling (3), screw mechanism is provided with dust cover (4), institute's translation stage (7) is provided with the grating scale (8) be connected with controller (19) wire, two 5 ~ 10mm places, lateral extent edge of the anterior face of displacement platform (7) are arranged with the equal platform threaded hole (9) of multiple spacing, described fixed support (10) is made up of base plate (10-1) and the U-board (10-2) be located on base plate (10-1), 5 ~ 10mm place, base plate (10-1) two lateral extent edge of fixed support (10) is arranged with the multiple support threaded holes (11) identical with platform threaded hole (9) interval location, the center, two ends of described pressure transducer (15) is respectively provided with a threaded hole, one end of pressure transducer (15) is connected in the U-board (10-2) of fixed support (10) by annular knurl hexagon socket head cap screw (14), and the other end is connected with the transmission lever (16) loaded flexible member (17),
Before and after described displacement platform (7), symmetria bilateralis is provided with the L shape fixed head (5) be fixed on operating platform (1);
The platform threaded hole (9) that the two symmetrically arranged multiple spacing in 5 ~ 10mm place, lateral extent edge of the anterior face of institute's translation stage (7) are equal is 4 ~ 6.
2. the charger of simulation flexible member vibration test according to claim 1, is characterized in that: the symmetrically arranged multiple support threaded holes (11) identical with platform threaded hole (9) interval location in 5 ~ 10mm place, base plate (10-1) two lateral extent edge of described fixed support (10) are 2.
3. the charger of simulation flexible member vibration test according to claim 1, is characterized in that: the model of described pressure transducer (15) is GB-S10kg; The model of grating scale (8) is MS30.23.MK.
4. utilize a loading method for the simulation flexible member vibration test of charger described in claim 1, it is characterized in that:
First displacement platform (7) is fixed on operating platform (1), again flexible member (17) to be loaded is fixed on the front portion of displacement platform (7), adjustment fixed support (10) fixed position on displacement platform (7) and be connected to the length of the transmission lever (16) on pressure transducer (15), makes the loading position of flexible member (17) and transmission lever (16) also close contact point-blank;
The power loaded by computing machine (18) setting or shift value, the heap(ed) capacity of setting is converted to voltage signal by the controller (19) be connected with computing machine (18), the AC servo motor (2) in rear drive displacement platform (7) is amplified through driving power (20), thus drive displacement platform (7) motion, the fixed support (10) be connected on displacement platform (7) moves with displacement platform (7), the transmission lever (16) being simultaneously connected to pressure transducer (15) one end on fixed support (10) loads flexible member (17), power in loading procedure and displacement are directly recorded by the grating scale (8) on pressure transducer (15) and displacement platform (7) respectively and pass to controller (19), computing machine (18) is uploaded to after via controller (19) process, relation curve between the power of computing machine (18) the whole loading procedure of display and loading in real time and shift value, and preserve curve map and data,
When displacement platform (7) reaches power or the shift value of setting loading, send out reset command by computing machine (18) to controller (19), displacement platform (7) is resetted, thus completes whole loading procedure.
5. the loading method of simulation flexible member vibration test according to claim 4, is characterized in that: the power maximal value of described loading is 100N, and shift value is 50mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210306973.9A CN102818688B (en) | 2012-08-27 | 2012-08-27 | Loading device and method of vibration test of imitating flexible member |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210306973.9A CN102818688B (en) | 2012-08-27 | 2012-08-27 | Loading device and method of vibration test of imitating flexible member |
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| Publication Number | Publication Date |
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| CN102818688A CN102818688A (en) | 2012-12-12 |
| CN102818688B true CN102818688B (en) | 2015-05-20 |
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Families Citing this family (8)
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| CN103558002B (en) * | 2013-09-23 | 2016-07-06 | 广东工业大学 | A kind of flexible beam tip vibration characteristic test device and method of testing |
| CN104324874B (en) * | 2014-09-03 | 2016-05-25 | 西安交通大学 | The end surface cam type d-axis vibrator that a kind of alternating current servo motor direct drives |
| CN104568354A (en) * | 2015-01-22 | 2015-04-29 | 华南理工大学 | Flexible hinged plate vibration measurement device based on ultrasonic sensors |
| CN104828259B (en) * | 2015-05-05 | 2016-08-31 | 北京理工大学 | A kind of utilize vibrator simulation elastic vibration method that Sensitive Apparatus is affected and realize device |
| CN107228645A (en) * | 2017-07-14 | 2017-10-03 | 太仓源凯汽车配件有限公司 | A kind of actuator pressure stroke test device |
| CN109540010B (en) * | 2018-11-02 | 2020-08-14 | 北京卫星制造厂有限公司 | High-precision ultrahigh-pressure liquid-phase simulation load accumulated error test platform |
| CN109655219B (en) * | 2019-01-15 | 2021-06-01 | 武汉菲仕运动控制系统有限公司 | Method and system for controlling vibrating table |
| CN110068437B (en) * | 2019-05-13 | 2023-12-05 | 成都凯天电子股份有限公司 | Method for checking vibration magnitude of electronic product |
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Inventor after: Li Wei Inventor after: Liu Yufei Inventor after: Yang Xuefeng Inventor after: Wang Yuqiao Inventor before: Jing Hongwen Inventor before: Yang Xuxu Inventor before: Chen Kunfu Inventor before: Yang Shengqi Inventor before: Sun Panpan |
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Free format text: CORRECT: INVENTOR; FROM: JING HONGWEN YANG XUXU CHEN KUNFU YANG SHENGQI SUN PANPAN TO: LI WEI LIU YUFEI YANG XUEFENG WANG YUQIAO |
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